A stepping motor torque automatic measuring device

Abstract

The present invention relates to an automatic torque measuring device for a stepping motor, which solves the technical problems of low production efficiency and unreliable product quality. The device is provided with a measuring mechanism and a control mechanism. The measuring mechanism is provided with a main support plate, and four measuring stations are provided on the main support plate. Each test station is provided with an elongated groove, which is located on the main support plate. The elongated groove is provided with a chuck mechanism, and the chuck mechanism is provided with a chuck, a movable pressure shaft, an induction test plate and a torque disk. The front end of the movable pressure shaft is connected to the chuck, and a chuck pressing sheet is provided in the chuck. The connection between the chuck and the movable pressure shaft is provided with an induction test plate, and a photoelectric sensor bracket is fixedly provided at the upper end of the induction test plate, and a photoelectric sensor is provided on the photoelectric sensor bracket. The torque disk is provided at the rear of the induction test plate, and a weight line is wound on the torque disk, and the weight line is connected to the weight, and a one-way bearing is provided between the induction test plate and the torque disk. The present invention can be widely used in the field of stepping motor production automation machinery technology.

Description

Technical Field

[0001] The invention relates to the technical field of motor production automation machinery, in particular to an automatic torque measuring device for a stepping motor. Background Art

[0002] With the continuous development and improvement of science and technology, the production of stepper motors cannot be separated from automated production equipment. In order to improve production efficiency, improve product quality, and save manpower during the production process of stepper motors, automatic lifting force detection of stepper motors is an indispensable automatic testing equipment. Stepper motor lifting force is a method to test the output torque of stepper motors. However, the lifting force requirements of stepper motors are particularly high. They must be accurate and reliable, and the production efficiency must be able to keep up with other workstations. However, the existing lifting force method is manual operation, visual inspection of the output torque of the stepper motor, resulting in low productivity, unreliable quality, and uncontrolled product quality. Summary of the invention

[0003] The present invention aims to solve the deficiencies in the above-mentioned background technology and provides a stepper motor torque automatic measuring device with high production efficiency, high-quality product output, high safety factor and labor saving.

[0004] To this end, the present invention provides a stepper motor torque automatic measuring device, which is provided with a measuring mechanism and a control mechanism. The control mechanism is provided with a chassis, and a bottom plate is provided on the upper end surface of the chassis. The measuring mechanism is fixed on the bottom plate. The measuring mechanism is provided with a main bracket plate, and five pillars are provided on the main bracket plate. Every two adjacent pillars form a measuring station, and a total of four measuring stations are provided. An elongated groove is provided on the upper part of the main bracket plate, and a chuck mechanism is provided in the elongated groove. The chuck mechanism is provided with a chuck, a movable pressure shaft, an induction test plate and a torque disk. The front end of the movable pressure shaft is connected to the chuck, and a chuck pressing sheet is provided in the chuck. The connection between the chuck and the movable pressure shaft is provided with an induction test plate. The induction test plate is circular, and the induction test plate is just stuck at the lower end of the elongated groove. A photoelectric sensor bracket is fixedly provided on the upper end of the induction test plate, and a photoelectric sensor is provided on the photoelectric sensor bracket. The torque disk is arranged behind the induction test plate and is sleeved on the end of the movable pressure shaft. A weight line is wound on the torque disk, and the weight line is connected to the weight. The weight is between two adjacent pillars of the main bracket plate, and a one-way bearing is provided between the induction test plate and the torque disk.

[0005] Preferably, a motor fixing plate is provided in front of the main bracket plate, the motor fixing plate is fixed on the main bracket plate, the motor fixing plate is provided with a card slot, the upper end of the motor fixing plate is fixedly connected to the discharging push plate, the discharging push plate is divided into a horizontal part and a vertical part, the vertical part is fixed on the motor fixing plate, the vertical part is provided with a groove, which can coincide with the card slot on the motor fixing plate, the test terminal circuit board is fixed at the groove of the vertical part, a number of test terminals are provided on the test terminal circuit board, the horizontal part of the discharging push plate is connected to the discharging cylinder, and the discharging cylinder is fixed to the upper end surface of the main bracket plate.

[0006] Preferably, the right side of each discharging cylinder is vertically connected to an ejection connecting rod, and the lower end of the ejection connecting rod is vertically connected to the discharging pressing plate.

[0007] Preferably, a downward pressing block is provided above the end of the movable pressing shaft, the upper end of the downward pressing block is connected to the downward pressing cylinder, the downward pressing block and the downward pressing cylinder are both fixed on the rear pushing downward pressing plate, the upper end of the rear pushing downward pressing plate is vertically connected to the chuck tensioning cylinder, the lower end of the chuck tensioning cylinder is connected to the rear support plate, and the rear support plate is fixed to the main support plate.

[0008] Preferably, the lower end of the motor fixing plate is connected to a baffle plate, and the baffle plate is fixed on the main bracket plate.

[0009] Preferably, a protective cover is provided between the main support plate and the rear support plate, and the lower end of the rear support plate is connected to the support frame.

[0010] Preferably, an inclined discharge chute is provided on the bottom plate.

[0011] Preferably, a touch screen, a power switch, a control switch and an alarm buzzer are sequentially arranged at the front end of the chassis, and the number of the control switches is four.

[0012] Preferably, a material trough is provided at the front side of the bottom of the chassis, and a solenoid valve seat is provided at the rear end of the chassis.

[0013] The beneficial effects of the present invention are:

[0014] (1) The measuring mechanism of the present invention is provided with four independent measuring stations, which can work simultaneously or independently. Each measuring station is provided with a chuck mechanism, which is provided with a chuck, a movable pressure shaft, an induction test plate and a torque disk. The chuck mechanism is used to clamp the stepper motor. The torque disk is wound with a weight line, and the weight line is connected to the weight. The torque disk is driven by the weight to rotate to detect the torque of the stepper motor. A photoelectric sensor is provided on the induction test plate. The present invention rotates the stepper motor to be tested for one circle and drives the induction test plate to rotate synchronously with the torque disk and the weight for one circle. The photoelectric sensor detects the number of high and low levels to determine whether the stepper motor torque is qualified. The stepper motor torque is tested by specific data, so that defective stepper motors can be detected 100%, product quality is controlled, and labor is saved.

[0015] (2) The measuring mechanism of the present invention is also provided with a discharging cylinder, an ejector connecting rod and a discharging pressing plate. After the stepper motor test is completed, the discharging cylinder drives the ejector connecting rod to push forward, and the ejector connecting rod drives the discharging pressing plate to push forward, so that the stepper motor is separated from the motor positioning plate, and the lead terminal of the stepper motor is also automatically separated from the test terminal and automatically falls into the discharging chute, which saves manpower and improves the detection efficiency.

[0016] (3) The present invention has four independent test stations. Testers can install stepper motors at the test stations without interruption for testing. There is no need to manually visually check whether each stepper motor drives the weight to the correct position normally. The detection efficiency of the present invention is 600 per hour, which is doubled compared to the existing manual detection efficiency of 300 per hour. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front perspective view of the present invention;

[0018] Figure 2 is a rear perspective view of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the measuring mechanism of the present invention;

[0020] Figure 4 A partial view of a measuring station in the testing mechanism of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the chuck mechanism of the present invention.

[0022] Reference numerals:

[0023] 1. Protective cover; 2. Baffle; 3. Discharge chute; 4. Chassis; 5. Touch screen; 6. Feed chute; 7. Discharge push plate; 8. Test terminal; 9. Stepper motor; 10. Support frame; 11. Bottom plate; 12. Alarm buzzer; 13. Control switch; 14. Power switch; 15. Foot block; 16. Weight line; 17. Weight; 18. Solenoid valve seat; 19. Test terminal circuit board; 20. Motor fixing plate; 2 1. Main support plate; 22. Discharging cylinder; 23. Chuck tensioning cylinder; 24. Rear support plate; 25. Photoelectric sensor; 26. Induction test plate; 27. Chuck pressure plate; 28. Chuck; 29. ​​Ejector connecting rod; 30. Rear push down plate; 31. Down-pressing cylinder; 32. Down-pressing connecting block; 33. Movable pressure shaft; 34. Torque plate; 35. Discharging pressure plate; 36. One-way bearing; 37. Photoelectric sensor support. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not limited to the present invention.

[0025] like Figure 1 As shown, the present invention provides an automatic torque measuring device for a stepping motor, which is provided with a measuring mechanism and a control mechanism. The control mechanism is provided with a chassis 4 for installing motor controls. The upper end surface of the chassis 4 is provided with a base plate 11, and the measuring mechanism is fixed on the base plate 11.

[0026] like Figure 3 As shown, the measuring mechanism is provided with a main bracket plate 21, on which five pillars are provided, and each adjacent two pillars form a measuring station, and a total of four measuring stations are provided. Each measuring station has the same structure, and a stepper motor 9 can be installed and measured. Each measuring station is provided with a motor fixing plate 20, which is fixed on the main bracket plate 21. The motor fixing plate 20 is provided with a card slot for fixing the stepper motor 9. The upper end of the motor fixing plate 20 is fixedly connected to the discharge push plate 7, which is divided into a horizontal component and a vertical component. The vertical component is fixed on the motor fixing plate 20, and the vertical component is provided with a groove, which can overlap with the card slot on the motor fixing plate 20. The test terminal circuit board 19 is fixed at the groove of the vertical component, and a plurality of test terminals 8 are provided on the test terminal circuit board 19 for connecting the lead terminals of the stepper motor 9; the horizontal component of the discharge push plate 7 is connected to the discharge cylinder 22, and the discharge cylinder 22 is fixed to the upper end surface of the main bracket plate 21.

[0027] Furthermore, if Figure 4 As shown, the right side of each discharging cylinder 22 is connected to an ejection connecting rod 29, and the lower end of the ejection connecting rod 29 is vertically connected to the discharging pressing plate 35. Under the action of the discharging cylinder 22, the ejection connecting rod 29 drives the discharging pressing plate 35 to eject the stepping motor 9 after the test is completed.

[0028] Furthermore, a chuck mechanism is provided below the discharge pressing plate 35, such as Figure 5 As shown, the chuck mechanism is arranged at the long groove of the upper part of the main support plate 21, and the chuck mechanism is provided with a chuck 28, a movable pressure shaft 33, an induction test plate 26 and a torque disk 34. The front end of the movable pressure shaft 33 is connected to the chuck 28, and a chuck pressing sheet 27 is arranged in the chuck 28 for pressing the stepper motor 9. The connection between the chuck 28 and the movable pressure shaft 33 is provided with an induction test plate 26, which is circular and just stuck at the lower end of the long groove. A photoelectric sensor bracket 37 is fixedly arranged at the upper end of the induction test plate 26, and a photoelectric sensor 25 is arranged on the photoelectric sensor bracket 37 for detecting the rotation of the stepper motor 9. The torque disk 34 is arranged behind the induction test plate 26, and is sleeved on the end of the movable pressure shaft 33. The torque disk 34 is wound with a weight line 16, and the weight line 16 is connected to the weight 17. The weight 17 is located between the two pillars of the main support plate 21, and is used to test the output torque of the stepper motor 9. A one-way bearing 36 is provided between the induction test board 26 and the torque plate 34 for testing the forward and reverse rotation of the stepper motor 9 .

[0029] Furthermore, a downward pressing block 32 is provided above the end of the movable pressing shaft 33, and the upper end of the downward pressing block 32 is connected to the downward pressing cylinder 31. The downward pressing block 32 and the downward pressing cylinder 31 are both fixed on the rear pushing lower pressing plate 30. The upper end of the rear pushing lower pressing plate 30 is vertically connected to the chuck tensioning cylinder 23, and the lower part of the chuck tensioning cylinder 23 is connected to a rear support plate 24 for supporting the chuck tensioning cylinder 23, and one end of the rear support plate 24 is fixed on the main support plate 21.

[0030] Another example Figure 1 As shown, the lower end of the motor fixing plate 20 is connected to the baffle 2, and the baffle 2 is fixed on the main bracket plate 21. A protective cover 1 is provided between the main bracket plate 21 and the rear bracket plate 24. The lower end of the rear bracket plate 24 is connected to the support frame 10, and the support frame 10 is fixed on the main bracket plate 21.

[0031] A discharge chute 3 is also provided on the bottom plate 11 . The discharge chute 3 is placed obliquely, one end of the discharge chute 3 is connected to the baffle 2 , and the other end is connected to the bottom plate 11 , and is used to discharge the stepper motor 9 after the test.

[0032] The front face of the control mechanism's chassis 4 is provided with a touch screen 5, a power switch 14, a control switch 13 and an alarm buzzer 12 in sequence. The touch screen 5 is a human-machine dialogue window; the power switch 14 is used to control the power of the entire device; there are four control switches 13, which correspond to four measuring stations respectively; the alarm buzzer 12 is an alarm device, which automatically alarms when a defective product is found. The rear face of the chassis 4 is provided with an electromagnetic valve seat 18, such as Figure 2 As shown, it is used to centrally supply air to the solenoid valve in the chassis 4. A material trough 6 is provided at the front side of the bottom of the chassis 4 for placing the unmeasured stepper motor 9; four foot blocks 15 are provided at the bottom of the chassis 4, which are respectively arranged at the four corners of the bottom of the chassis 4 to support the entire device and achieve a stable effect.

[0033] The working principle of the present invention is:

[0034] Manually install the stepper motor 9 to be tested on the motor fixing plate 20, insert the stepper motor lead into the test terminal 8, start the power switch 14 and the control switch 13, and start the test. The pressing cylinder 31 is pressed down, the pressing connecting block 32 is connected to the movable pressing shaft 33, the clamping head loosening cylinder 23 is pushed forward, driving the movable pressing shaft 33 to push forward, prompting the clamping head pressing piece 27 to press the four directions of the axis of the stepper motor 9, and connecting the stepper motor 9 to the clamp 28. The pressing cylinder 31 rises, the pressing connecting block 32 is disconnected from the movable pressing shaft 33, the stepper motor 9 starts to rotate, driving the induction test board 26 to rotate synchronously, and the photoelectric sensor 25 receives high and low level signals. When the stepper motor 9 rotates one circle, and sends this electrical signal to the CPU for comparison, if 60 high and low level signals are detected, and the number is the same as the set high and low level signals, the pressing cylinder 31 pushes the pressing connecting block 32 downward, connects with the movable pressing shaft 33, the clamping head loosening cylinder 23 retreats, pulls out the movable pressing shaft 33, the clamping head 28 is separated from the stepper motor 9 shaft, and the weight 17 returns to its original position. Then, the discharging cylinder 22 pushes the ejection connecting rod 29 and the discharging push plate 7, so that the stepper motor 9 and the stepper motor lead are separated from the measuring mechanism, and the stepper motor 9 falls into the discharging trough 3 to complete the test.

[0035] If the stepper motor 9 has a bad torque, the weight 17 does not move, and the photoelectric sensor 25 detects 60 high and low level signals which are different from the set number of high and low level signals, the discharge cylinder 22 will not be pushed forward, the stepper motor 9 and the stepper motor leads will not be separated from the measuring mechanism, and the alarm buzzer 12 will sound an alarm. The defective stepper motor must be manually removed to complete the test.

[0036] This invention has four independent test stations, and the tester can continuously install the stepper motor 9 on the motor fixing plate 20. If the stepper motor 9 reverses during the test, the one-way bearing 36 does not reverse, and the photoelectric sensor 25 cannot detect 60 high and low level signals, the system is considered bad, the alarm buzzer 12 sounds an alarm, and the stepper motor 9 is manually removed.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stepper motor torque automatic measuring device, comprising a measuring mechanism and a control mechanism, wherein the control mechanism is provided with a chassis, the upper end surface of the chassis is provided with a bottom plate, and the measuring mechanism is fixed on the bottom plate, wherein: The measuring mechanism is provided with a main bracket plate, and five pillars are provided on the main bracket plate, and every two adjacent pillars form a measuring station, and there are four measuring stations in total. The upper part of the main bracket plate is provided with an elongated groove, and the elongated groove is provided with a chuck mechanism, and the chuck mechanism is provided with a chuck, a movable pressure shaft, an induction test plate and a torque disk. The front end of the movable pressure shaft is connected to the chuck, and a chuck pressing sheet is provided in the chuck, and an induction test plate is provided at the connection between the chuck and the movable pressure shaft. The induction test plate is circular, and the induction test plate is just stuck at the lower end of the elongated groove. A photoelectric sensor bracket is fixedly provided at the upper end of the induction test plate, and a photoelectric sensor is provided on the photoelectric sensor bracket. The torque disk is provided at the rear of the induction test plate and is sleeved on the end of the movable pressure shaft. A weight line is wound on the torque disk, and the weight line is connected to the weight. The weight is between two adjacent pillars of the main bracket plate, and a one-way bearing is provided between the induction test plate and the torque disk. A motor fixing plate is provided in front of the main bracket plate, the motor fixing plate is fixed to the main bracket plate, the motor fixing plate is provided with a card slot, the upper end of the motor fixing plate is fixedly connected to the discharging push plate, the discharging push plate is divided into a horizontal component and a vertical component, the vertical component is fixed to the motor fixing plate, the vertical component is provided with a groove, which can coincide with the card slot on the motor fixing plate, the test terminal circuit board is fixed at the groove of the vertical component, the test terminal circuit board is provided with a plurality of test terminals, the horizontal component of the discharging push plate is connected to the discharging cylinder, and the discharging cylinder is fixed to the upper end surface of the main bracket plate; The right side of each of the discharging cylinders is vertically connected to an ejection connecting rod, and the lower end of the ejection connecting rod is vertically connected to a discharging pressing plate; A downward pressing block is provided above the end of the movable pressing shaft, and the upper end of the downward pressing block is connected to the downward pressing cylinder. The downward pressing block and the downward pressing cylinder are both fixed on the rear pushing downward pressing plate. The upper end of the rear pushing downward pressing plate is vertically connected to the chuck tensioning cylinder, and the lower end of the chuck tensioning cylinder is connected to the rear support plate, and the rear support plate is fixed to the main support plate.

2. The stepper motor torque automatic measuring device according to claim 1, characterized in that: The lower end of the motor fixing plate is connected to a baffle plate, and the baffle plate is fixed to the main bracket plate.

3. The stepper motor torque automatic measuring device according to claim 1, characterized in that: A protective cover is provided between the main support plate and the rear support plate, and the lower end of the rear support plate is connected to the support frame.

4. The stepper motor torque automatic measuring device according to claim 1, characterized in that: The bottom plate is provided with an inclined discharging trough.

5. The stepper motor torque automatic measuring device according to claim 1, characterized in that: The front end of the chassis is provided with a touch screen, a power switch, a control switch and an alarm buzzer in sequence, and the number of the control switches is four.

6. The stepper motor torque automatic measuring device according to claim 5, characterized in that: A material trough is provided at the front side of the bottom of the chassis, and an electromagnetic valve seat is provided at the rear end of the chassis.

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