DESC:TECHNICAL FIELD

Present disclosure generally relates to field of manufacturing. Particularly, but not exclusively, the disclosure relates to a mechanical joining process by employing a riveting machine. Further, embodiments of the present disclosure discloses a pneumatically actuated radial riveting machine.

BACKGROUND OF THE DISCLOSURE

Conventionally, manufacturing machines are used for a variety of manufacturing operations. More specifically, joining operations such as welding, or riveting employ different machines and methods or processes for performing joining operations. Several of these joining processes are well known in the art. Such conventional methods and/or processes may be including, but may not be limited to, welding, brazing, soldering, riveting and the like. The methods and/or processes such as, welding, brazing, soldering and the like, are performed by subjecting two or more members to a heating process, while the methods and/or processes such as, riveting, is performed by mechanically deforming the two or more members or deforming a feed member positioned between the two or more members.

Riveting machines, in general, may be provisioned with an actuation system, which may be hydraulically or pneumatically driven. The actuation system, conventionally, includes a piston-cylinder arrangement, where the piston-cylinder arrangement may be configured to receive a pressurized fluid supplied from a pump. This pressurized fluid may suitably displace/operate the piston, within the cylinder, to exert a requisite force on the feed member, that permanently joins the two or more members. Further, the riveting machines may be categorized based on the nature of the force applied by the piston, into axial/press riveting machines and radial/orbital riveting machines.

The radial riveting machines, in general, may be provisioned with a tandem cylindrical arrangement. The operation of the tandem cylindrical arrangement may be performed in two strokes, namely, an actuation stroke [or deformation stroke] and a retrieving stroke [non-deformation stroke]. The actuation stroke may be performed to operate a hammer or a peen member to deform the feed member or the two or more members proximal therein. On the other hand, the retrieving stroke may be performed to retract the hammer or the peen member, inhibiting further deformation of the feed member or the two or more members. The radial riveting machines, in general, may perform the actuation stroke as well as the retrieving stroke by employing an equal volume of a pressurized fluid in both the strokes. It may be noted that for performing the retrieving stroke, i.e. the non-deformation stroke, employing the pressurized fluid of equal volume in comparison with the actuation stroke may result in a high-fluid consumption rate, which may not be necessary. This high-fluid consumption rate may inadvertently result in high-operating costs and comparatively more Mean-Operating-Time of the radial riveting machine.

Additionally, it may also be noted that the number of mobile components involved in the operation of the tandem cylinder arrangement may comparatively be more, thereby increasing the dependency of regular servicing and/or lubrication.

The present disclosure is proposed to overcome one or more limitations stated above or any other limitation associated with the prior art.

SUMMARY OF THE DISCLOSURE

One or more shortcomings of the prior art are overcome by a device as claimed and additional advantages are provided through the provision of device as claimed in the present disclosure. Additional features and advantages are realized through the aspects and techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.

In one non-limiting embodiment of the present disclosure, a radial riveting machine is disclosed. The radial riveting machine comprises of a tandem cylinder arrangement, comprising a first piston, a second piston, connected in tandem to the first position and an intermediate piston connected to the first piston. The machine also includes a body which is configured to accommodate the tandem cylinder arrangement. The body is defined with a first chamber configured to accommodate the first piston and the intermediate piston. The body is also configured with a second chamber to accommodate the second piston. A first channel which is connecting a first port defined in the first chamber and a second port defined in the second chamber is defined in the body, wherein the first channel is configured to selectively channelize pressurized fluid through the first port and the second port to simultaneously displace the first piston and the second piston in a forward stroke. Further, a second channel connecting a third port is defined in the first chamber is defined in the body, wherein the second channel is configured to selectively channelize the pressurized fluid through the third port to displace the first piston and the second piston in a return stroke.

In an embodiment, the first piston is coaxially connected to the second piston.

In an embodiment, the intermediate piston is positioned within the first piston and is configured to rotate and reciprocate within the first piston.

In an embodiment, the intermediate piston is connected to a motor at one end and the other end of the intermediate piston is connected to a gearbox housing.

In an embodiment, the gearbox housing is configured to house a sun-planetary gear system, which is adaptably meshed to impart a sway motion to the intermediate piston.

In an embodiment, the comprises of a hammer member connected to the gearbox housing, through a universal joint for imparting radial riveting action.

In an embodiment, the first channel and the second channel receive pressurized fluid through a closed-circuit system.

In an embodiment, each of the first piston and the second piston are defined with a groove to accommodate a sealing member to prevent leakage of the pressurized fluid.

In an embodiment, the pressurized fluid is a pneumatic fluid.

In an embodiment, the first port and the third port are defined in opposite ends of the first chamber such that the first port and the third port are on either side of the first piston.

In an embodiment, the second port is defined adjoining end of the second chamber with the first chamber.

In an embodiment, the forward stroke of the first piston and the second piston is achieved by simultaneously channelizing the pressurized fluid onto the top surfaces of the first piston and the second piston through the first port and the second port. Further, during the forward stroke, the pressurized fluid at the bottom surface of the first piston is vented through the third port.

In an embodiment, the return stroke of the first piston and the second piston is achieved by channelizing the pressurized fluid onto the bottom surface of the first piston through the third port. Further, during the return stroke the pressurized fluid at the top surfaces of the first piston and the second piston is vented through the first port and the second port.

It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined together to form a further embodiment of the disclosure.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES

The novel features and characteristics of the disclosure are set forth in the description. The disclosure itself, however, as well as a preferred mode of use, further advantages thereof, will best be understood by reference to the following description of an illustrative embodiment when read in conjunction with the accompanying drawings. One or more embodiments are now described, by way of example only, with reference to the accompanying drawings wherein like reference numerals represent like elements and in which:

FIG.1 illustrates a sectional view of a radial riveting machine, in accordance with one embodiment of the present disclosure.

FIG.2 illustrates an exploded view of the radial riveting machine, in accordance with one embodiment of the present disclosure.

FIG.3 is a sectional top view of the radial riveting machine, in accordance with one embodiment of the present disclosure.

FIGS.4a-4c are sectional views of the radial riveting machine in a sequential operative mode, in accordance to one embodiment of the present disclosure.

The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the devices and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION OF THE DISCLOSURE

The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the claims of the disclosure. It should be appreciated by those skilled in the art that, the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other mechanism for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

In the present document, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that an assembly, device or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.

Embodiments of the present disclosure discloses a radial riveting machine. The radial riveting machine may include a tandem cylinder arrangement. The tandem cylinder arrangement may include a first piston and a second piston, which may be connected to one another in tandem. The first piston and the second piston may be positioned in a first chamber and a second chamber respectively. Also, the first piston may be constructed to secure an intermediate piston, which at one end may be connected to a motor and at the other end may be introduced into a gearbox housing. Additionally, it may be noted that the first piston along with the intermediate piston, and the second piston may be configured to a reciprocating movement within the first chamber and the second chamber. Here, the reciprocating movement of the first piston and the second piston may be performed by selectively channelizing a pressurized fluid to the first chamber and the second chamber. A first channel and a second channel are configured in the radial riveting machine to channelize pressurized fluid into the first chamber and the second chamber.

In an embodiment, the gearbox housing may be configured to house a sun-planetary gear system, which may adaptably mesh to impart a sway motion to the intermediate piston. Additionally, a hammer member may be connected to the gearbox housing, via a universal joint, for imparting a radial riveting action-based movement of the tandem cylinder arrangement.

Reference will now be made to the exemplary embodiments of the disclosure, as illustrated in the accompanying drawings. Wherever possible, same numerals will be used to refer to the same or like parts. The following paragraphs describe the present disclosure with reference to FIGS 1 to 4c.

FIG.1 illustrates a radial riveting machine (100), in accordance with an exemplary embodiment of the present disclosure. The radial riveting machine (100), includes a body (1). The body (1) may be composed of a first plate (2a), a second plate (2b) and a third plate (2c), which may be configured successively one after the other to define a first chamber (A), a second chamber (B) and a third chamber (C) for housing a tandem cylinder arrangement (50). The first chamber (A) may accommodate a first piston (3) between the first plate (2a) and the second plate (2b). An intermediate piston (4) may concentrically and rotatably be secured within the first piston (3). It may be noted that, the first piston (3) may be linearly or reciprocably displaceable within the first chamber (A) of the body (1), while the intermediate piston (4) may be rotatably as well as reciprocably displaceable within the first piston (3). Further, the second chamber (B) accommodates a second piston (12) which is connected to the first piston (3) in tandem. The first piston (3) and the second piston (12) may be actuated by applying pressure using a pressurized fluid. The pressurized fluid is channelized onto the first piston (3) and the second piston (12) through a first channel (C1) [shown in Fig. 4a]. The first channel (C1) may be configured on any side of the body (1). The first channel (C1) then splits up into two paths, wherein the first path leads to a first port (P1) [shown in fig. 4a] and the second path leads to a second port (P2). The first port (P1) is configured to be in fluid communication with the first piston (3), whereas the second port (P2) is configured to be in fluid communication with the second piston (12). The second port (P2) is defined in a side which adjoin the end of the second chamber (B) with the first chamber (A). The first channel (C1) is configured to channelize pressurized fluid into the first chamber (A) and the second chamber (B) to simultaneously displace the first piston (3) and the second piston (12) in a forward stroke for riveting.

Further, a second channel (C2) is defined in the body (1) and is in fluid communication with the first chamber (A). The second channel (C2) is connected to a third port (P3) that channelizes pressurized fluid into the first chamber (A), to displace the first piston (3) in the opposite direction as compared to the first channel (C1). The second channel (C2) channelizes pressurized fluid onto the first piston (3) to displace the first piston (3) in a return stroke, to retract the first piston (3). However, as the first piston (3) and the second piston (12) are connected in tandem, the second piston (12) also displaces in the reverse stroke with the first piston (3) when the pressurized fluid in channelized in the second channel (C2).

The first plate (2a) may be configured to externally accommodate a motor (5), whereby a motor shaft (6) extending from the motor (5) may be slidably coupled with the intermediate piston (4). Here, the first piston (3) may be provisioned with a first restrictor (8), in order to regulate a reciprocating movement of the first piston (3), and in-turn the reciprocating movement of the intermediate piston (4) on the motor shaft (6), as seen in Figure 2. It may be noted that, during the reciprocating movement of the first piston (3), and in-turn the reciprocating movement of the intermediate piston (4), the first piston (3) may be restricted by the second plate (2b). Furthermore, to initiate the reciprocating movement of the first piston (3), and in-turn the intermediate piston (4), the first channel (C1) may be provided on any one side of the first piston (3), in the first chamber (A). The first channel (C1) may be selectively operated to channelize a pressurized fluid through a first port (P1) to adaptably regulate the pressure applied on the first piston (3). This selective operation of the first channel (C1) may assist in sustainably reciprocating the first piston (3) and the intermediate piston (4) within the first chamber (A). In an embodiment, it may be noted that the first chamber (A) may be provisioned with one or more inlet ports for supplying the pressurized fluid, and hence, employment of two inlet ports in first chamber (A) should not construe this to be a limitation.

In an exemplary embodiment, the first piston (3) and the intermediate piston (4) may be constructed to extend from the first chamber (A) and intrude to the second chamber (B), through the second plate (2b). Further, the intermediate piston (4) may be constructed to accommodate a drive shaft (9), extending from a gearbox housing (10) of the riveting machine (100). The drive shaft (9) may be coupled to a at least one sun-planetary gear system (11), which may be confined in the gearbox housing (10). Here, the drive shaft (9) may be coupled with at least one planetary gear (13) of the at least one sun-planetary gear system (11), as shown in Figure 3. It may be noted that there may be two or more planetary gears for a given sun gear (14), in the at least one sun-planetary gear system (11). However, as an example, the instant disclosure illustrates one planetary gear (13) for adaptably meshing with one sun gear (14), and hence, this should not be construed as a limitation of the disclosure. In an embodiment, due to connection between the drive shaft (9) and the at least one planetary gear (13), the rotational motion transmitted by the drive shaft (9) may impart a sway motion to the at least one planetary gear (13). This sway motion imparted by the drive shaft (9) may assist the at least one planetary gear (13) to adaptably mesh with the sun gear (14), thereby streamlining the sway motion imparted therethrough.

In continuation, the drive shaft (9) may be provisioned with a protrusion (15), that may extend through the at least one planetary gear (13), for establishing a connection with a universal joint (16), as seen in Figure 1. Additionally, another end of the universal joint (16) may be connectable to a hammer member (17), extending from the second chamber (B) to intrude the third chamber (C) of the body (1). It may be noted that the streamlined sway motion may be experienced by the protrusion (15), which then transmits the sway motion to the hammer member (17), via the universal joint (16). Due to this sway motion, caused by mesh between the at least one planetary gear (13) and the sun gear (14), the hammer member (17) may be subjected to a radial motion, in order to trace a hypotrochoid profile. One skilled in the art would appreciate that the number of curves in the hypotrochoid profile may be varied based on gear ratio in each gear in the at least one sun-planetary gear system (11).

Further, the second piston (12) may be positioned between the second plate (2b) and the gearbox housing (10), whereby the second piston (12) and the second plate (2b) may successively form the second chamber (B), as best seen in Figures 4a-4c. The second piston (12) may be coaxially connected to the first piston (3) and constructed to accommodate the gearbox housing (10), along with the drive shaft (9) extending therefrom. The second piston (12) may also be subjected to the reciprocating movement and may be traversable within the second chamber (B), as best seen in Figure 1. Here, for assisting the second piston (12) to undergo the reciprocating movement, the second chamber (B) may be provisioned with the second port (P2) which extends from the first channel (C1), proximal to the second plate (2b).

In an embodiment, the third plate (2c) may be connected to a cover member (18), for concealing the third chamber (C) and the second chamber (B) of the tandem cylinder arrangement (50). The cover member (18) may be constructed to allow traversing of the cover member (18) and the hammer member (17), from the third chamber (C) and therethrough. Further, the cover member (18) may be coupled with the second piston (12) and may be subjected to the reciprocating movement along with the second piston (12). Here, it may be noted that the hammer member (17) may be subjected to the reciprocating movement by virtue of the second piston (12) and may be subjected to a radial motion by virtue of the universal joint (16) and the at least one sun-planetary gear system (11). This combination of the reciprocating movement and the radial motion experienced by the hammer member (17) may result in subjecting a feed member [not shown in figures] to a radial and/or an oblique deformation. Here, the feed member may be positioned between two or more members, prior to the radial and/or the oblique deformation so that, once the feed member may be radially and/or oblique deformed, the two or more members may be permanently joined therebetween.

In an exemplary embodiment, the radial riveting machine (100) may be operated between an actuation mode and a retrieving mode. Here, the actuation mode of the radial riveting machine (100) may construe to pressurizing the first chamber (A) at the first port (P1) of the first channel (C1), and the second chamber (B) at the second port (P2) of the first channel (C1), by channelizing the pressurized fluid therethrough. Meanwhile, the retrieving mode may be construed as selective de-pressurizing the first channel (C1) and pressurizing the second channel (C2). In the sense, the second channel (C2) may be supplied with the pressurized fluid, wherein the pressurized fluid is channelized through the third port (P3) into the first chamber (A), while the first channel (C1) is not operated [or open condition] to allow dispensing of the fluid therein, due to reciprocating movement of the first piston (3).

As an example, one skilled in the art may note that for operating the tandem cylinder arrangement (50), and in-turn the radial riveting machine (100), in the actuation mode, the first channel (C1) with the first port (P1) and the second port (P2) may be operated, i.e. channelized with the pressurized fluid, synchronously and/or concurrently. Due to this synchronous and/or concurrent channelling of the pressurized fluid, the first piston (3) along with the intermediate piston (4), and the second piston (12) may be subjected to a displacement, i.e. the reciprocating movement, away from the first plate (2a) and the second plate (2b) respectively, as seen in Figures 4a and 4b. At the same instance, on operating the motor (5), the motor shaft (6) may subject the intermediate piston (4) to the rotator motion, whereby the drive shaft (9) may rotate the at least one planetary gear (13). This rotational motion of the at least one planetary gear (13) may result in producing the sway motion such that, the at least one planetary gear (13) may adaptably mesh with the sun gear (14). The mesh between the at least one planetary gear (13) with the sun gear (14) may then streamline the sway motion, which may be experienced as the radial motion, by the hammer member (17), via the protrusion (15) and the universal joint (16). The radial motion and the reciprocating movement experienced by the hammer member (17) may be employed to radially deform the feed member. One skilled in the art would appreciate that the second channel (C2), at this juncture, may be unoperated, i.e. allowing dispensing the fluid therefrom from the third port (P3), under the action of the reciprocating movement of the first piston (3).

Referring now to Figure 4c, which illustrates operation of the tandem cylinder arrangement (50), and in-turn the radial riveting machine (100), in the retrieving mode. Here, channelizing the pressurized fluid to the first channel (C1) i.e. through the first port (P1) and the second port (P2) may be halted or stopped, while the second channel (C2) may be channelized with the pressurized fluid to flow into the first chamber (A) through the third port (P3). The channelizing of the pressurized fluid through the second channel (C2), while maintaining the first channel (C1) in the stationary or idle condition, may render decreasing the pressure at the first channel (C1) in the first chamber (A). This decrease in pressure at the first channel (C1) and increase in pressure at the second channel (C2) may assist in retrieving, i.e. displacing, the first piston (3) towards the first plate (2a). Meanwhile, as the first piston (3) and the second piston (12) are connected, due to retrieval of the first piston (3) towards the first plate (2a), the second piston (12) may inherently be retrieved towards the second plate (2b). The retrieval of the second piston (12) may then retrieve the reciprocating movement imparted on the hammer member (17), thereby resulting in retrieval of the radial deformation on the feed member.

In one embodiment, the forward stroke is achieved by simultaneously channelizing the pressurized fluid onto the top surface of the first piston (3) through the first port (P1) and the top surface of the second piston (12) through the second port (P2) and venting out the pressurized fluid at the bottom surface of the first piston (3) through the third port (P3). Further, the return stroke is achieved by channelizing the pressurized fluid onto the bottom surface of the first piston (3) through the third port (P3) and venting out the pressurized fluid at the top surfaces of the first piston (3) through the first port (P1) and of the second piston (12) through the second port (P2).

In one embodiment, the first port (P1) and the third port (P3) are defined in opposite ends of the first chamber (A) such that the first port (P1) and the third port (P3) are on either side of the first piston (3).

In one embodiment, the first chamber (A), the second chamber (B), and the third chamber (C) may be either integrally formed or may be joined with one another, to form the tandem cylinder arrangement (50). Further, the first chamber (A), the second chamber (B), and the third chamber (C) may be connected by means including, but not limited to, welding, soldering, brazing, fastening, adhesive bonding, riveting, and the like.

In one embodiment, a first provision (22) and a second provision (23) may be defined in the intermediate piston (4). The first provision (22) may be adapted to receive the motor shaft (6), whereas the second provision (23) may be adapted to receive the drive shaft (9). Further, the first provision (22) and the second provision (23) may be eccentrically positioned, thereby assisting the intermediate piston (4) to connect the motor shaft (6) and the drive shaft (9), to impart the sway movement to the at least one planetary gear (13).

In one embodiment, a flow control valve may be disposed between a radial riveting machine (100) and the fluid source, and the flow control valve may be associated with a control unit. The control unit may be programmed to operate the flow control valve so that, channelizing of the pressurized fluid may be automatically regulated in order to switch the operational mode of the radial riveting machine (100) between the actuation mode and the retrieving mode. In an embodiment, the fluid source may be a pneumatic source, and the flow control valve may be a solenoid valve.

In one embodiment, a second restrictor (20) may be provisioned to restrict extent of the reciprocating movement of the cover member (18), during the actuation mode of the radial riveting machine (100).

In an embodiment, a frame member (21) may be connected to the first plate (2a), in order to externally accommodate the motor (5).

In one embodiment, the first piston (3) and the second piston (12) may be provisioned with sealing member (7). Further, the first piston (3) and the second piston (12) may be defined with grooves to accommodate the sealing member (7). The sealing member (7) may be including, but not limited to, circumferential sealings, gaskets, a plurality of O-rings, and the like, for inhibiting leakage of the pressurized fluid.

In one embodiment, a resilient member (19) may be position between the hammer member (17) and the cover member (18), whereby the resilient member (19) may assist the hammer member (17) during retrieval motion of the second piston (12).

In one embodiment, the motor (5) may be connected to a power source, where the power source may be an AC power source or a DC power source. Further, the radial riveting machine (100) may be interfaced with an electronic unit such that, power supplied from the power source may be automatically cut-off in accordance with inputs from a user interface.

In one embodiment, the first channel (C1) and the second channel (C2) may be part of a closed-circuit system, wherein the pressurized fluid is not allowed to escape into the surroundings.

In one embodiment, the pressurized fluid may be supplied by a pneumatic device which may not be an integral part of the radial riveting machine (100).

In one embodiment, the pressurized fluid is a pneumatic fluid.

In one embodiment, the radial riveting machine (100) may be configured as a portable setup or may be rigidly fixed to a fixture.

In an embodiment, the first channel (C1) may be provisioned for the forward stroke while the second channel (C2) may be configured for the reverse stroke. Moreover, the first channel (C1) is configured to deliver the pressurised fluid to both the first port (P1) and the second port (P2) in order to carry out the forward stroke. Whereas, the fluid pressure channelized in the second channel (C2) pushes the first piston (3) in a reverse direction in order to retract the pistons. Advantageously, this allows compact packing of the pistons within the body in order to reduce the overall dimension of the radial riveting machine (100).

It should be construed that the various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The one skilled in the art would readily recognize that the configuration disclosed may also be employed to other machines such as, but not limited to, dough making machines, amalgamation machines, mixer grinders, and the like. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Equivalents:

The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.

The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.

The use of the expression “at least” or “at least one” suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.

Any discussion of documents, acts, materials, devices, articles and the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base plate or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.

The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the disclosure, unless there is a statement in the specification specific to the contrary.

While considerable emphasis has been placed herein on the particular features of this disclosure, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other modifications in the nature of the disclosure or the preferred embodiments will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.

Referral Numerals:

Particulars Numeral
Radial riveting machine 100
Tandem cylinder arrangement 50
First chamber A
Second chamber B
Third chamber C
First channel C1
Second channel C2
First port P1
Second port P2
Third port P3
Body 1
First plate 2a
Second plate 2b
Third plate 2c
First piston 3
Intermediate piston 4
Motor 5
Motor shaft 6
Sealing member 7
First restrictor 8
Drive shaft 9
Gearbox housing 10
Sun-planetary gear system 11
Second piston 12
Planetary gear 13
Sun gear 14
Protrusion 15
Universal joint 16
Hammer member 17
Cover member 18
Resilient member 19
Second restrictor 20
Frame member 21
First provision 22
Second provision 23

,CLAIMS:1. A radial riveting machine (100), comprising:
a tandem cylinder arrangement (50), comprising:
a first piston (3);
a second piston (12), connected in tandem to the first position (3);
an intermediate piston (4) connected to the first piston (3); and
a body (1) configured to accommodate the tandem cylinder arrangement (50), wherein the body (1) is defined with:
a first chamber (A) configured to accommodate the first piston (3) and the intermediate piston (4);
a second chamber (B) configured to accommodate the second piston (12);
a first channel (C1) connecting a first port (P1) defined in the first chamber (A) and a second port (P2) defined in the second chamber (B), wherein the first channel (C1) is configured to selectively channelize pressurized fluid through the first port (P1) and the second port (P2) to simultaneously displace the first piston (3) and the second piston (12) in a forward stroke; and
a second channel (C2) connecting a third port (P3) defined in the first chamber (A), wherein the second channel (C2) is configured to selectively channelize the pressurized fluid through the third port (P3) to displace the first piston (3) and the second piston (12) in a return stroke.

2. The radial riveting machine (100) as claimed in claim 1, wherein the first piston (3) is coaxially connected to the second piston (12).

3. The radial riveting machine (100) as claimed in claim 1, wherein the intermediate piston (4) is positioned within the first piston (3) and is configured to rotate and reciprocate within the first piston (3).

4. The radial riveting machine (100) as claimed in claim 1, wherein the intermediate piston (4) is connected to a motor (5) at one end and the other end of the intermediate piston (4) is connected to a gearbox housing (10).

5. The radial riveting machine (100) as claimed in claim 1, wherein the gearbox housing (10) is configured to house a sun-planetary gear system (11), which adaptably mesh to impart a sway motion to the intermediate piston (4).

6. The radial riveting machine (100) as claimed in claim 1, comprises of a hammer member (17) connected to the gearbox housing (10), through a universal joint (16) for imparting radial riveting action.

7. The radial riveting machine (100) as claimed in claim 1, wherein the first channel (C1) and the second channel (C2) receives pressurized fluid through a closed-circuit system.

8. The radial riveting machine (100) as claimed in claim 1, wherein each of the first piston (3) and the second piston (12) are defined with a groove to accommodate a sealing member (7) to prevent leakage of the pressurized fluid.

9. The radial riveting machine (100) as claimed in claim 1, wherein the pressurized fluid is a pneumatic fluid.

10. The radial riveting machine (100) as claimed in claim 1, wherein the first port (P1) and the third port (P3) are defined in opposite ends of the first chamber (A) such that the first port (P1) and the third port (P3) are on either sides of the first piston (3).

11. The radial riveting machine (100) as claimed in claim 1, wherein the second port (P2) is defined in adjoining end of the second chamber (B) with the first chamber (A).

12. The radial riveting machine (100) as claimed in claim 1, wherein the forward stroke of the first piston (3) and the second piston (12) is achieved by simultaneously channelizing the pressurized fluid onto the top surfaces of the first piston (3) and the second piston (12) through the first port (P1) and the second port (P2).

13. The radial riveting machine (100) as claimed in claim 1, wherein the forward stroke of the first piston (3) and the second piston (12) is achieved by venting out the pressurized fluid at the bottom surface of the first piston (3) through the third port (P3).

14. The radial riveting machine (100) as claimed in claim 1, wherein the return stroke of the first piston (3) and the second piston (12) is achieved by channelizing the pressurized fluid onto the bottom surface of the first piston (3) through the third port (P3).

15. The radial riveting machine (100) as claimed in claim 1, wherein the return stroke of the first piston (3) and the second piston (12) is achieved by venting out the pressurized fluid at the top surfaces of the first piston (3) through the first port (P1) and of the second piston (12) through the second port (P2).