Description:Complete Specification

The following specification describes and ascertains the nature of this invention and the manner in which it is to be performed.
Field of the invention
[0001] This invention relates to an algorithm for an electronic control unit, and more specifically to the algorithm for providing a closed loop between a grinding spindle and the electronic control unit.

Background of the invention
[0002] CN 116276637 A describes an active constant-force flange device. The invention belongs to the field of industrial robot end device technology and automatic precision machining external tools, and particularly relates to an active flexible flange, an execution assembly comprises a linear motor composed of a stator and a rotor, and an auxiliary movement assembly is a high-precision linear bearing. The control assembly comprises a linear motor controller and a controller which is independently researched and developed and is provided with an embedded process algorithm. The tail end tool is a self-defined execution tool such as an electric spindle, a pneumatic spindle, a grinding machine, a belt sander assembly contact wheel and a sand gun rod. The device has the beneficial effects that the guide assembly ensures that a movable part of the execution assembly does not deviate, so that the precision is improved; and the arrangement of the guide assembly can reduce the impact on the execution assembly, and the service life of the execution assembly is prolonged. The constant force output control of the linear motor is controlled through a process algorithm, so that the front end of the equipment can obtain a stable active contact force with high precision, quick response and strong anti-interference capability.

Brief description of the accompanying drawing
[0003] Figure 1 illustrates an algorithm for providing a closed loop between a grinding spindle and an electronic control unit.

Detailed description of the embodiments
[0004] Figure 1 illustrates an algorithm for closed loop control of grinding spindle angle for control of taper during grinding. The algorithm comprises securing an electronic control unit in electronic communication with a grinding machine, and measuring an angle of the grinding spindle with respect to a horizontal axis by the electronic control unit, wherein the electronic control unit is in electronic communication with a linear variable displacement transducer that measures an actual angle of the grinding spindle with respect to the horizontal axis. The algorithm further comprises comparing the angle of the grinding spindle with a target virtual angle value that is received from the grinding machine post measurement gauge which is the diametrical difference between two measurement points and the actual position measured by the linear variable displacement transducer, and correcting the taper for the component that is ground based on the result of the comparison between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge.

[0005] Figure 1 illustrates an algorithm 100 for closed loop control of a grinding spindle angle for control of taper during grinding. The algorithm comprises securing 110 an electronic control unit in electronic communication with a grinding machine. More specifically, the electronic control unit is in electronic communication with the grinding machine and transmits and receives electronic signals to/from the grinding machine. The algorithm further comprises measuring 120 an angle of the grinding spindle with respect to a horizontal axis by the electronic control unit. More specifically, the electronic control unit is in electronic communication with a linear variable displacement transducer. The linear variable displacement transducer measures an actual angle of the grinding spindle with respect to the horizontal axis and transmits an electronic signal comprising the actual angle of the grinding spindle to the electronic control unit.
[0006] The algorithm for closed loop control of a grinding spindle angle for control of taper during grinding comprises comparing 130 the angle of the grinding spindle with a target virtual angle value that is received from the grinding machine post measurement gauge. More specifically, the target virtual angle comprises the diametrical difference between two measurement points on the grinding object divided by the horizontal axis traversed by the grinding spindle between the two measurement points on the grinding object. In addition, the angle of the grinding spindle comprises the actual position measured by the linear variable displacement transducer between the two measurement points on the grinding object.

[0007] The algorithm for closed loop control of a grinding spindle angle for control of taper during grinding comprises correcting 140 the taper angle for the component that is ground. More specifically, the taper angle for the component that is ground is corrected based on the result of the comparison between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge. If the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge is equal to zero, the taper angle for the component that is ground is not corrected and the grinding spindle traverses on its current trajectory.

[0008] In an exemplary embodiment, the electronic control determines the difference between the actual position measured by the linear variable displacement transducer between the grinding spindle at the two measurement points of the grinding object and divides it with the length of the horizontal axis measured between the two measurement points of the grinding object. In addition, the electronic control unit determines the target virtual angle value that is received from the grinding machine post measurement gauge, which is the expected value of the angle of the grinding spindle with reference to the horizontal axis. The electronic control unit corrects the grinding angle of the grinding spindle based on the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge.

[0009] The algorithm 100 for closed loop control of grinding spindle angle for control of taper during grinding further comprises the electronic control unit the corrects the grinding angle of the grinding spindle based on the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge. If the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge is lesser than a threshold limit that is pre-determined by a user, the electronic control unit corrects the grinding angle of the grinding spindle based on the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge. This feedback between the grinding spindle and the electronic control unit occurs continuously until the grinding operation of the grinding spindle has been completed.

[0010] The algorithm for closed loop control of grinding spindle angle for control of taper during grinding, wherein the electronic control unit stops the grinding process if the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge is greater than a threshold limit that is pre-determined by a user.

[0011] The algorithm 100 for closed loop control of grinding spindle angle for control of taper during grinding ensures that the system will tend to correct the error when there is a difference between actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge. The algorithm 100 for closed loop control of grinding spindle angle for control of taper during grinding also ensures that if the difference between actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge is more than the decided limit, then the electronic control unit will communicate to the grinding machine to stop the grinding process.

[0012] It must be understood that the embodiments explained above are only illustrative and do not limit the scope of the disclosure. Many modifications in the embodiments with regard to dimensions of various components are envisaged and form a part of this invention. The scope of the invention is only limited by the scope of the claims.
, Claims:We Claim

1. An algorithm (100) for closed loop control of grinding spindle angle for control of taper during grinding, the algorithm (100) comprising:
Securing (110) an electronic control unit in electronic communication with a grinding machine;
measuring (120) an angle of the grinding spindle with respect to a horizontal axis by the electronic control unit, wherein the electronic control unit is in electronic communication with a linear variable displacement transducer that measures an actual angle of the grinding spindle with respect to the horizontal axis;
comparing (130) the angle of the grinding spindle with a target virtual angle value that is received from the grinding machine post measurement gauge which is the diametrical difference between two measurement points and the actual position measured by the linear variable displacement transducer; and
correcting (140) the taper for the component that is ground based on the result of the comparison between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge.

2. The algorithm (100) for closed loop control of grinding spindle angle for control of taper during grinding in accordance with Claim 1, wherein the electronic control unit determines the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge and corrects the grinding angle of the grinding spindle based on the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge.

3. The algorithm (100) for closed loop control of grinding spindle angle for control of taper during grinding in accordance with Claim 1, wherein the electronic control unit corrects the grinding angle of the grinding spindle based on the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge if the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge is lesser than a threshold limit that is pre-determined by a user.

4. The algorithm (100) for closed loop control of grinding spindle angle for control of taper during grinding in accordance with Claim 1, wherein the electronic control unit stops the grinding process if the difference between the actual position measured by the linear variable displacement transducer and the target virtual angle value that is received from the grinding machine post measurement gauge is greater than a threshold limit that is pre-determined by a user.