TW202222476A - Control system and control method for disc type tool magazine will generate a corresponding signal when the transmission error exceeds the acceptable margin of error - Google Patents

Abstract

A control system for a disc type tool magazine comprises a servo motor, a first encoder, a reducer, a transmission mechanism, a second encoder and a servo driver. A first encoder is disposed on the servo motor. The reducer is disposed between the servo motor and the transmission mechanism. The second encoder is disposed on the transmission mechanism. A control method of the control system includes: the servo driver receives a rotation signal and controls the servo motor based on the rotation signal; and the servo driver receives a first pulse signal from the first encoder and a second pulse signal from the second encoder, and will send out a signal when the pulse number of the first pulse signal reaches an upper limit pulse number and the pulse number of the second pulse signal has not reached a predetermined pulse number, that is, when the transmission error exceeds the acceptable margin of error.

Description

Control system and control method of disc type tool magazine

The invention relates to a disc type tool magazine; in particular, it refers to a control system and a control method of the disc type tool magazine.

Please refer to FIG. 1, which is an automatic tool changing mechanism of a known machine tool, which includes a disc-type tool magazine 1, a servo motor 2, a reducer 3, a transmission mechanism 4, an encoder 5 and a Servo drive 6. Wherein, the disc-type tool magazine 1 includes a turntable 1a and a plurality of tool pockets 1b, and the tool pockets 1b are used for accommodating different tools. The reducer 3 is connected to the output shaft of the servo motor 2 . The reducer 3 includes a number of gears with different gear ratios. The transmission mechanism 4 includes a pinion 4a and a large gear 4b, the pinion 4a is connected to the reducer 3, and the large gear 4b is connected to the turntable 1a of the disc-type tool magazine 1; the encoder 5 is installed in the servo motor 2 The above is only used to detect whether the rotation speed and rotation angle of the rotor of the servo motor 2 are indeed in place, and output the corresponding pulse signal back to the servo driver 6 . The servo driver 6 issues a driving or braking control command to the servo motor 2 . The servo motor 2 drives the disc-type tool magazine 1 to rotate through the reducer 3 and the transmission mechanism 4 to achieve the purpose of tool selection.

Although the above mechanism can complete the tool selection operation, the specific tool pocket can be moved to the tool changing position, so that the tool changing arm can take the tool or place the tool at the tool changing position. However, the gear parts of the reducer 3 and the transmission mechanism 4 are prone to backlash after long-term use, and the slight backlash will cause transmission errors and affect the rotational position of the disc-type tool magazine 1 . Besides, the disc-type tool magazine 1 may also affect the rotation position due to the heavy load, resulting in inaccurate rotation. All of the above situations will make the automatic tool changer operate incorrectly. However, the conventional automatic tool changing mechanism cannot know from the pulse signal of the encoder 5 that the specific tool pocket 1b has not moved to the tool changing position, only when the tool changing arm cannot pick up the tool or place the tool at the tool changing position , to issue a warning. Therefore, the aforementioned known techniques are not perfect and need to be improved.

In view of this, the purpose of the present invention is to provide a control system and a control method for a disc type tool magazine, which can generate a corresponding signal when the transmission error exceeds the allowable error range.

In order to achieve the above object, the present invention provides a control system for a disc type tool magazine, the disc type tool magazine includes a turntable and a plurality of tool pockets, and the tool pockets are arranged on the turntable; the control system includes a Servo motor, a first encoder, a reducer, a transmission mechanism, a second encoder and a servo driver, wherein the servo motor has an output shaft; the first encoder is arranged on the servo motor; the first encoder An encoder is used for outputting a first pulse signal corresponding to the rotation of the output shaft; the reducer has an input end and an output end, the input end is coupled to the output shaft; the transmission mechanism includes a first meshing a toothed part and a second toothed part, the first toothed part is coupled to the output end, the second toothed part is coupled to the turntable; and when the first toothed part is driven by the output end to rotate, the first toothed part It can drive the second gear to rotate, and then drive the turntable to rotate; the second encoder is arranged on one of the first gear and the second gear, and the second encoder is used to correspond to the set first gear. The rotation of a gear or the second gear outputs a second pulse signal; the servo driver is electrically connected to the servo motor, the first encoder and the second encoder, and the servo driver controls the servo motor to rotate or stop turning;

Wherein, the number of the tool pockets is N; when the output shaft rotates one revolution, the first pulse signal output by the first encoder has a first predetermined pulse number, and the first predetermined pulse number is K1; The second pulse signal output by the second encoder has a second predetermined number of pulse waves, the second predetermined number of pulse waves is K2; the reduction ratio of the reducer is M:1;

The servo driver sends a signal when a first condition is satisfied, wherein the first condition is: the number of pulses of the first pulse signal output by the first encoder reaches K1×M+E, And the received pulse number of the second pulse signal output by the second encoder is less than K2; wherein, E is an error pulse number.

The present invention also provides a control system for a disc type tool magazine, the control system includes a servo motor, a first encoder, a reducer, a transmission mechanism, a second encoder and a servo driver, wherein the The servo motor has an output shaft; the first encoder is arranged on the servo motor; the first encoder is used to output a first pulse signal corresponding to the rotation of the output shaft; the reducer has an input end and an output end , the input end is coupled to the output shaft; the transmission mechanism is coupled between the output end and the turntable; the second encoder is arranged in the transmission mechanism, and the second encoder is used to output the output corresponding to the rotation of the transmission mechanism a second pulse signal; the servo driver is electrically connected to the servo motor, the first encoder and the second encoder, the servo driver receives a rotation signal, and controls the servo motor according to the rotation signal, so that the output The shaft rotates and drives the turntable to rotate through the reducer and the transmission mechanism; the servo driver receives the first pulse signal and the second pulse signal, and when the pulse number of the first pulse signal reaches an upper limit pulse When the wave number and the pulse number of the second pulse signal have not reached a predetermined pulse number, the servo driver sends a signal.

The present invention also provides a control method for a control system of a disc type tool magazine. The control system includes a servo motor with an output shaft and a first encoder for outputting a first encoder corresponding to the rotation of the output shaft. a pulse signal; a reducer with an input end and an output end, the input end is coupled to the output shaft; a transmission mechanism, including a first gear and a second gear that mesh with each other, the first gear The first gear is coupled to the output end, and the second gear is coupled to the turntable; and when the first gear is driven by the output to rotate, the first gear can drive the second gear to rotate, thereby driving the turntable rotation; a second encoder for outputting a second pulse signal corresponding to the rotation of one of the first gear and the second gear; a servo driver electrically connected to the servo motor, the first gear an encoder and the second encoder; wherein the number of the tool pockets is N, and when the output shaft rotates one revolution, the first pulse signal output by the first encoder has a first predetermined number of pulses, The first predetermined pulse number is K1; when the first gear corresponding to the second encoder rotates once or the second gear corresponding to the second encoder rotates 1/N The second pulse signal output by the encoder has a second predetermined pulse number, and the second predetermined pulse number is K2; the reduction ratio of the reducer is M:1; the control method is executed by the servo driver, Contains the following steps:

A. Receive a rotation signal;

B. Control the servo motor to rotate the output shaft and receive the first pulse signal and the second pulse signal;

C. Count the number of pulses of the first pulse signal, and count the number of pulses of the second pulse signal;

D. When a first condition is met, a signal is sent, wherein the first condition is: the number of pulses of the first pulse signal reaches K1×M+E, and the number of pulses of the second pulse signal is less than K2; wherein, E is an error pulse number.

The effect of the present invention is that, with the pulse signals of the first encoder and the second encoder, the servo driver can send a signal for subsequent processing when the transmission error exceeds the allowable error range.

In order to describe the present invention more clearly, preferred embodiments are given and described in detail with the drawings as follows. Please refer to FIG. 2 , which is a control system 100 of the disk-type tool magazine 1 according to the first preferred embodiment of the present invention, which is used to control the disk-type tool magazine 1 shown in FIGS. 3 and 4 . The disk-type tool magazine 1 includes a turntable 1a and a plurality of tool pockets 1b. The tool pockets 1b are disposed on the turntable 1a and rotate with the turntable 1a.

The control system 100 includes a servo motor 10 , a first encoder 12 , a reducer 14 , a transmission mechanism 16 , a second encoder 18 and a servo driver 20 .

The servo motor 10 has an output shaft 102 , and the servo motor 10 is controlled to rotate the output shaft 102 . The first encoder 12 is disposed on the servo motor 10 and moves simultaneously with the output shaft 102 . The first encoder 12 is used for outputting a first pulse signal corresponding to the rotation of the output shaft 102 . When the output shaft 102 rotates once, the first pulse signal output by the first encoder 12 has a predetermined pulse wave (defined as a first predetermined pulse wave number K1 hereinafter).

The reducer 14 has an input end 142 and an output end 144 , the input end 142 is coupled to the output shaft 102 , the reducer 14 has a reduction ratio, and the reduction ratio is M:1, that is, the output of the servo motor 10 The shaft 102 drives the input end 142 to rotate M circles, and the output end 144 rotates one circle. In this embodiment, M is 10 as an example, but not limited thereto. The speed reducer 14 includes most gears with different gear ratios for speed reduction, such as, but not limited to, a planetary gear reducer or a worm gear reducer.

The transmission mechanism 16 is coupled between the output end 144 and the turntable 1 a of the disk-type tool magazine 1 . In this embodiment, the transmission mechanism 16 includes a first gear member 162 and a second gear member 164 that are engaged with each other, the first gear member 162 is coupled to the output end 144 of the reducer 14 , and the second gear member 164 is coupled to the turntable 1a, and the second gear 164 moves together with the turntable 1a. When the first gear 162 is rotated by the output end 144 of the reducer, the first gear 162 can drive the second gear 164 to rotate, thereby driving the turntable 1a to rotate, and the second gear 164 rotates a A circle is equivalent to one rotation of the turntable 1a of the disk-type tool magazine 1 . In this embodiment, the first gear 162 is a worm, and the second gear 164 is a worm wheel. One end of the worm is coupled to the output end 144 of the reducer 14, and the shaft of the worm is connected to the worm gear. The outer periphery is engaged, and the wheel body of the worm gear is coupled to the turntable 1a. In a normal state (that is, the first toothed member 162 abuts against and drives the second toothed member 164 to rotate), the first toothed member 162 rotates once, then drives the second toothed member 164 to rotate 1/N turn, where N is The number of tool magazines. In this embodiment, N is 10 as an example, but not limited thereto. One rotation of the first toothed member 162 or 1/N rotation of the second toothed member 164 corresponds to 1/N rotation of the disk-type tool magazine 1 (ie, switching one tool position). Switching the tool positions can make a specific tool pocket 1b correspond to a tool changing position.

The second encoder 18 is disposed on the transmission mechanism 16 , the second encoder 18 is used for outputting a second pulse signal corresponding to the rotation of the transmission mechanism 16 , and the second encoder 18 can be disposed on the first tooth One of the gear 162 and the second gear 164, the second encoder 18 is used for outputting the second pulse signal corresponding to the rotation of the first gear 162 or the second gear 164. In this embodiment, the second encoder 18 is arranged on the second gear member 164, more specifically, is arranged at the rotation center of the second gear member 164 (ie, the rotation center of the wheel body of the worm gear). The gear 18 is used to correspond to the rotation of the second toothed member 164 . When the second gear member 164 rotates 1/N turn, the second pulse signal output by the second encoder 18 has a predetermined pulse wave (hereinafter defined as a second predetermined pulse wave number K2).

The servo driver 20 is electrically connected to the servo motor 10 , the first encoder 12 and the second encoder 18 , and the servo driver 20 controls the servo motor 10 to rotate or stop rotating. In this embodiment, the servo driver 20 is connected to a controller 22, and the controller 22 can be, for example, a programmable logic controller. The controller 22 sends a control signal to the servo driver 20, and the servo driver 20 controls the servo driver 20 according to the control signal. The servo motor 10 rotates or stops rotating. When the control signal output by the controller 22 is a rotation signal, the servo driver 20 controls the servo motor 10 to rotate the output shaft 102 . In this embodiment, the rotation signal corresponds to at least 1/N rotation of the turntable of the disc-type tool magazine 1 along a first predetermined rotation direction or along a second predetermined rotation direction, and the first rotation direction and the second rotation direction The direction is opposite, even if the disc-type tool magazine 1 switches at least one tool position, but not limited to this, the rotation signal can also correspond to the turntable of the disc-type tool magazine 1 turning more than 2/N turns, that is, switching More than two knife positions.

With the above-mentioned control system 100 , the control method of this embodiment can be implemented. The control method is executed by the servo driver 20 and includes the following steps shown in FIG. 5 :

The servo driver 20 receives the rotation signal. The rotation signal is taken as an example corresponding to the 1/N turn of the turntable 1a of the disk-type tool magazine 1 to switch a tool position.

The servo driver 20 controls the servo motor 10 according to the rotation signal to rotate the output shaft 102 , and receives the first pulse signal of the first encoder 12 and the second pulse signal of the second encoder 18 .

The servo driver 20 continuously counts the number of pulses of the first pulse signal and continuously counts the number of pulses of the second pulse signal.

The servo driver 20 sends a signal when a first condition is satisfied, wherein the first condition is: the pulse number of the first pulse signal reaches an upper limit pulse number, and the pulse number of the second pulse signal The wave number is smaller than the second predetermined pulse wave number K2. The upper limit pulse number and the second predetermined pulse number can be pre-stored in the memory unit of the servo driver 20 for judgment. In this embodiment, the upper limit pulse wave number is K1×M+E, where E is an error pulse wave number. In this embodiment, E=K1×0.1, in other words, 10% of the first predetermined pulse number is taken as the allowable error pulse number. In other embodiments, 5-15% of the first predetermined pulse number can also be used as the allowable error pulse number, that is, E is between K1×0.05 to K1×0.15.

In other words, in a normal state, when a tool position is to be switched, the output shaft 102 of the servo motor 10 should rotate M circles, the first gear 162 is driven to rotate one circle through the reducer 14, and the second gear 164 is driven 1/N turn. The meaning of the above first condition means: when the output shaft 102 has rotated M turns plus an error of 0.1 turns, and the second gear 164 has not rotated to 1/N turn, that is, the output shaft 102 and the second gear 164 The transmission error between them has exceeded the allowable error range, and at this time, the servo driver 20 sends the signal. In this embodiment, the signal may include a warning signal and/or a stop signal. The servo driver 20 can transmit a warning signal to the controller 22 to warn the controller 22 . In other embodiments, the servo driver 20 can also send the warning signal to an warning unit directly or through the controller 22, and the warning unit can be, for example, a display, a warning light, a sounding element, and the like.

The servo driver 20 can transmit a stop signal to the servo motor 10 to control the servo motor 10 to stop rotating for maintenance personnel to perform subsequent calibration.

Before the first condition is met, when the pulse number of the first pulse signal output by the first encoder 12 received by the servo driver 20 is greater than K1×M and less than K1×M+E, the servo driver 20 controls the servo motor 10 so that the output shaft 102 continues to rotate. That is, when the output shaft 102 has rotated more than M turns, but has not reached the error of M turns plus 0.1 turns, the servo driver 20 still allows the servo motor 10 to continue to rotate if the transmission error is within the allowable error range. Until the pulse number of the second pulse signal output by the second encoder 18 is equal to K2, it means that the second gear 164 has rotated to 1/N turn, which means that a tool position has been switched, then the servo driver 20 controls The servo motor 10 stops the rotation of the output shaft 102 .

With the above embodiment, the servo driver 20 can continue to switch the tool position of the disc tool magazine 1 within the allowable error range, and when the transmission error exceeds the allowable error range, a signal is sent for subsequent processing. .

FIG. 6 shows a control system 200 of a disc-type tool magazine according to a second preferred embodiment of the present invention, which has substantially the same structure as that of the first embodiment. The difference is that in this embodiment, the second encoder 24 is disposed on the first gear 162, that is, disposed on the other end of the worm gear, and the other end is opposite to the output end of the reducer. The second encoder 24 is used for outputting a second pulse signal corresponding to the rotation of the first gear member 162 . When the first gear member 162 rotates one revolution, the second pulse signal output by the second encoder 24 There is a second predetermined pulse wave number K2.

The control method of this embodiment is substantially the same as that of the first embodiment. Similarly, when the servo driver 20 satisfies the first condition, it sends out a signal. The first condition is: the pulse number of the first pulse signal reaches an upper limit pulse number, and the pulse number of the second pulse signal is less than the second predetermined pulse number K2. The meaning of the above-mentioned first condition means: when the output shaft 102 has rotated M turns plus an error of 0.1 turns, and the first toothed member 162 has not rotated to one turn, that is, between the output shaft 102 and the first toothed member 162 The transmission error has exceeded the allowable error range, and at this time, the servo driver 20 sends out the signal.

FIG. 7 shows a control system 300 of a disk-type tool magazine according to a third preferred embodiment of the present invention, which is based on the structure of the first embodiment, and further includes a third encoder 26. The third encoder The drive 26 is electrically connected to the servo driver 20 .

The second encoder 18 is disposed on one of the first gear 162 and the second gear 164 , and the third encoder 26 is disposed on the other of the first gear 162 and the second gear 164 one. In this embodiment, the third encoder 26 has the same setting position and function as the second encoder 24 of the second embodiment. The third encoder 26 is used for outputting a third pulse signal corresponding to the rotation of the first gear 162 . When the first gear 162 rotates once, the third pulse signal output by the third encoder 26 has a predetermined pulse number (hereinafter defined as a third predetermined pulse number K3).

The control method of this embodiment is based on the first embodiment, and further includes:

The servo driver 20 receives the third pulse signal and counts the number of pulses of the third pulse signal.

The servo driver 20 sends out another signal when a second condition is satisfied, wherein the second condition is:

The pulse number of the first pulse signal is greater than K1×M+E, and the received pulse number of the second pulse signal output by the third encoder is less than K3.

The meaning of the second condition means: when the output shaft 102 has rotated M turns plus an error of 0.1 turns, and the first toothed member 162 has not rotated one turn, that is, the gap between the output shaft 102 and the first toothed member is The transmission error has exceeded the allowable error range, and at this time, the servo driver 20 sends out the other signal.

The other signal may include a warning signal and/or a stop signal.

The warning signal is sent to the controller 22 to warn the controller. In other embodiments, the servo driver 20 can also send the warning signal to the warning unit directly or through the controller 22 . The stop signal is transmitted to the servo motor 10 to control the servo motor 10 to stop rotating for maintenance personnel to perform subsequent calibration.

With the control system 300 and the control method of this embodiment, the servo driver 20 can send the signal when the transmission error between the output shaft 102 and the second gear 164 has exceeded the allowable error range (first condition), or the output shaft The transmission error between 102 and the first gear 162 has exceeded the allowable error range (second condition) to issue the other signal.

FIG. 8 shows a control system 400 of a disk-type tool magazine according to a fourth preferred embodiment of the present invention, which has substantially the same structure as that of the first embodiment. The difference is that the first The toothed member 282 is a small gear, and the second toothed member 284 is a large gear. Similarly, when the first toothed member 282 rotates one turn, the second toothed member 284 is driven to rotate 1/N turn. The control method of this embodiment is the same as that of the first embodiment, and will not be repeated. In addition, the transmission mechanism 28 of this embodiment can also be applied to the second and third embodiments.

The above descriptions are only preferred feasible embodiments of the present invention, and any equivalent changes made by applying the description of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

1: Disc type tool magazine 1a: Turntable 1b: Knife Cover 100: Control System 10: Servo motor 102: Output shaft 12: The first encoder 14: Reducer 142: input terminal 144: output terminal 16: Transmission mechanism 162: The first gear 164:Second gear 18: Second encoder 20: Servo drive 22: Controller 200: Control System 24: Second encoder 300: Control System 26: Third encoder 400: Control System 28: Transmission mechanism 282: First gear 284:Second gear

FIG. 1 is a schematic diagram of a conventional automatic tool changing mechanism. FIG. 2 is a schematic diagram of the control system according to the first preferred embodiment of the present invention. 3 is a schematic diagram of the connection between the control system and the disc type tool magazine according to the first preferred embodiment of the present invention. FIG. 4 is a schematic diagram of the disk-type tool magazine according to the first preferred embodiment of the present invention. FIG. 5 is a flowchart of a control method of the control system according to the first preferred embodiment of the present invention. FIG. 6 is a schematic diagram of a control system according to a second preferred embodiment of the present invention. FIG. 7 is a schematic diagram of a control system according to a third preferred embodiment of the present invention. FIG. 8 is a schematic diagram of the connection between the control system and the disk-type tool magazine according to the fourth preferred embodiment of the present invention.

100: Control System

10: Servo motor

102: Output shaft

12: The first encoder

14: Reducer

142: input terminal

144: output terminal

16: Transmission mechanism

162: The first gear

164:Second gear

18: Second encoder

20: Servo drive

22: Controller

Claims (26)

A control system of a disc type tool magazine, the disc type tool magazine comprises a turntable and a plurality of tool pockets, the tool pockets are arranged on the turntable; the control system comprises: a servo motor with an output shaft; a first encoder disposed on the servo motor; the first encoder is used for outputting a first pulse signal corresponding to the rotation of the output shaft; a reducer, which has an input end and an output end, the input end is coupled to the output shaft; a transmission mechanism, comprising a first gear member and a second gear member that mesh with each other, the first gear member is coupled to the output end, the second gear member is coupled to the turntable; and the first gear member is subjected to the output When the end is driven to rotate, the first gear can drive the second gear to rotate, thereby driving the turntable to rotate; A second encoder is disposed on one of the first gear member and the second gear member, and the second encoder is used to output a corresponding rotation of the first gear member or the second gear member. the second pulse signal; a servo driver, electrically connected to the servo motor, the first encoder and the second encoder, the servo driver controls the servo motor to rotate or stop rotating; Wherein, the number of the tool pockets is N; when the output shaft rotates one revolution, the first pulse signal output by the first encoder has a first predetermined pulse number, and the first predetermined pulse number is K1; The second pulse signal output by the second encoder has a second predetermined number of pulse waves, the second predetermined number of pulse waves is K2; the reduction ratio of the reducer is M:1; The servo driver sends out a signal when a first condition is met, wherein the first condition is: When the received pulse number of the first pulse signal output by the first encoder reaches K1×M+E, and the received pulse number of the second pulse signal output by the second encoder is less than K2; Among them, E is an error pulse number. The control system of the disc type tool magazine according to claim 1, wherein the signal is transmitted to the servo motor to control the servo motor to stop rotating. The control system for a disc type tool magazine according to claim 1, wherein the first gear is a worm, the second gear is a worm gear; one end of the worm is coupled to the output end of the reducer, and the worm gear is coupled to the turntable; the second encoder is arranged at the other end of the worm or the rotation center of the worm wheel. The control system of the disc-type tool magazine as claimed in claim 1, comprising a third encoder disposed on the other of the first gear member and the second gear member and electrically connected to the servo driver, the The third encoder is used to output a third pulse signal corresponding to the rotation of the set first gear or the second gear; the first gear set by the third encoder rotates once or the first gear When the second gear set by the three encoders rotates 1/N turn, the third pulse signal output by the third encoder has a third predetermined pulse number, and the second predetermined pulse number is K3; The servo driver sends out another signal when a second condition is satisfied, wherein the second condition is: The received pulse number of the first pulse signal output by the first encoder is greater than K1×M+E, and the received pulse number of the second pulse signal output by the third encoder is less than K3. The control system of the disc type tool magazine according to claim 4, wherein the other signal is transmitted to the servo motor to control the servo motor to stop rotating. The control system of the disk-type tool magazine according to claim 4, wherein the second encoder is arranged on the second gear member, and the third encoder is arranged on the first gear member. The control system of the disc type tool magazine according to claim 5, wherein the first gear is a worm, the second gear is a worm gear; one end of the worm is coupled to the output end of the reducer, and the worm is The shaft of the worm gear is engaged with the outer periphery of the worm wheel; the wheel body of the worm wheel is coupled to the turntable; the second encoder is arranged at the rotation center of the wheel body of the worm wheel; the third encoder is arranged at the other end of the worm. The control system of the disk-type tool magazine according to claim 1, wherein the second encoder is arranged on the second gear; the servo driver receives the first pulse signal output from the first encoder When the number of pulses is less than K1×M+E, the servo driver controls the servo motor to make the output shaft continue to rotate. The control system for a disc type tool magazine according to claim 8, wherein when the pulse number of the first pulse signal output by the first encoder received by the servo driver is less than K1×M+E, and the When the pulse number of the second pulse signal output by the second encoder is equal to K2, the servo driver controls the servo motor to stop the rotation of the output shaft. The control system for a disc type tool magazine according to claim 1, wherein the error pulse wave number satisfies the following conditions: E is between K1×0.05 to K×0.15. A control system of a disc type tool magazine, the disc type tool magazine comprises a turntable and a plurality of tool pockets, the tool pockets are arranged on the turntable; the control system comprises: a servo motor with an output shaft; a first encoder disposed on the servo motor; the first encoder is used for outputting a first pulse signal corresponding to the rotation of the output shaft; a reducer, which has an input end and an output end, the input end is coupled to the output shaft; a transmission mechanism, coupled between the output end and the turntable; a second encoder disposed on the transmission mechanism, the second encoder is used for outputting a second pulse signal corresponding to the rotation of the transmission mechanism; A servo driver is electrically connected to the servo motor, the first encoder and the second encoder, the servo driver receives a rotation signal, and controls the servo motor according to the rotation signal, so that the output shaft rotates through the deceleration The machine and the transmission mechanism drive the turntable to rotate; the servo driver receives the first pulse signal and the second pulse signal, and when the pulse number of the first pulse signal reaches an upper limit pulse number and the second pulse wave When the pulse number of the pulse signal has not reached a predetermined pulse number, the servo driver sends a signal. The control system of the disc type tool magazine as claimed in claim 11, wherein the signal is transmitted to the servo motor to control the servo motor to stop rotating. The control system for a disk-type tool magazine as claimed in claim 11, wherein the transmission mechanism comprises a first gear member and a second gear member that mesh with each other, the first gear member is coupled to the output end, and the second gear member The gear is coupled to the turntable; when the first gear is driven by the output end to rotate, the first gear can drive the second gear to rotate, thereby driving the turntable to rotate; the second encoder is arranged on the first gear one of a tooth and the second tooth. The control system for a disc type tool magazine as claimed in claim 13, wherein the first gear is a worm, the second gear is a worm gear; one end of the worm is coupled to the output end of the reducer, and the worm gear is coupled to the turntable; the second encoder is arranged at the other end of the worm or the rotation center of the worm wheel. The control system of the disk-type tool magazine according to claim 13, comprising a third encoder disposed on the first gear and electrically connected to the servo driver, the third encoder corresponding to the first gear rotates to output a third pulse signal; the second encoder is arranged on the second gear; the servo driver receives the three pulse signals, and when the number of pulses of the first pulse signal reaches the upper limit pulse and when the pulse number of the second pulse signal has not reached another predetermined pulse number, the servo driver sends out another signal. The control system of the disc type tool magazine as claimed in claim 15, wherein the other signal is transmitted to the servo motor to control the servo motor to stop rotating. The control system for a disc type tool magazine according to claim 15, wherein the first gear is a worm, the second gear is a worm wheel; one end of the worm is coupled to the output end of the reducer, and the worm is The shaft of the worm gear is engaged with the outer periphery of the worm wheel; the wheel body of the worm wheel is coupled to the turntable; the second encoder is arranged at the rotation center of the wheel body of the worm wheel; the third encoder is arranged at the other end of the worm. The control system for a disk-type tool magazine as claimed in claim 13, wherein the second encoder is disposed on the second gear; the number of pulses received by the servo driver of the first pulse signal is less than the upper limit pulse When the number of pulses of the second pulse signal has not reached the predetermined number of pulses, the servo driver controls the servo motor so that the output shaft continues to rotate. The control system for a disc tool magazine as claimed in claim 18, wherein the pulse number of the first pulse signal received by the servo driver is less than the upper limit pulse number, and the pulse number of the second pulse signal is When the predetermined pulse number is reached, the servo driver controls the servo motor to stop the rotation of the output shaft. A control method for a control system of a disc type tool magazine, the disc type tool magazine comprises a turntable and a plurality of tool pockets, the tool pockets are arranged on the turntable; the control system includes a servo motor with an output shaft ; a first encoder for outputting a first pulse signal corresponding to the rotation of the output shaft; a reducer, having an input end and an output end, the input end is coupled to the output shaft; a transmission mechanism, It includes a first gear and a second gear that are engaged with each other, the first gear is coupled to the output end, and the second gear is coupled to the turntable; and the first gear is driven by the output end to rotate , the first gear can drive the second gear to rotate, thereby driving the turntable to rotate; a second encoder is used to output the output corresponding to the rotation of one of the first gear and the second gear a second pulse signal; a servo driver electrically connected to the servo motor, the first encoder and the second encoder; wherein, the number of the tool sleeves is N, when the output shaft rotates once, the The first pulse signal output by the first encoder has a first predetermined pulse number, and the first predetermined pulse number is K1; the first gear corresponding to the second encoder rotates once or the second When the second gear corresponding to the encoder rotates 1/N turn, the second pulse signal output by the second encoder has a second predetermined pulse number, and the second predetermined pulse number is K2; the deceleration The reduction ratio of the machine is M:1; the control method is executed by the servo driver and includes the following steps: A. Receive a rotation signal; B. Control the servo motor to rotate the output shaft and receive the first pulse signal and the second pulse signal; C. Count the number of pulses of the first pulse signal, and count the number of pulses of the second pulse signal; D. Sending a signal when a first condition is met, wherein the first condition is: The pulse number of the first pulse signal reaches K1×M+E, and the pulse number of the second pulse signal is less than K2; wherein, E is an error pulse number. The control method of the control system of the disc tool magazine according to claim 20, wherein in step D, when the first condition is satisfied, the signal is transmitted to the servo motor to control the servo motor to stop rotating. The control method of the control system of the disc type tool magazine according to claim 20, wherein the second encoder is used for outputting the second pulse signal corresponding to the rotation of the second gear; step D is included in the first pulse signal When the pulse number of the wave signal is less than K1×M+E, the servo motor is controlled to make the output shaft continue to rotate. According to the control method of the control system of the disc type tool magazine according to claim 22, the step D includes when the pulse number of the first pulse signal is less than K1×M+E, and the second encoder output When the pulse number of the pulse signal is equal to K2, the servo motor is controlled to stop the rotation of the output shaft. The control method of the control system of the disc type tool magazine as claimed in claim 20, wherein the control system comprises a third encoder for corresponding to the rotation of the other one of the first gear member and the second gear member A third pulse signal is output, when the first gear corresponding to the third encoder rotates one revolution or the second gear corresponding to the third encoder rotates 1/N revolution, the third encoder The third pulse signal output by the device has a third predetermined pulse number, and the third predetermined pulse number is K3; the control method includes: Step B includes receiving the third pulse signal; Step C includes counting the number of pulses of the third pulse signal; Step C includes sending another signal when a second condition is satisfied, wherein the second condition is: The pulse number of the first pulse signal reaches K1×M+E, and the pulse number of the third pulse signal is less than K3. The control method of the control system of the disc type tool magazine according to claim 24, wherein in step D, the other signal is transmitted to the servo motor to control the servo motor to stop rotating. The control method for a control system of a disc-type tool magazine according to claim 20, wherein the error pulse wave number satisfies the following conditions: E is between K1×0.05 to K×0.15.

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