A stepper motor driver test fixture

Abstract

The invention relates to the technical field of stepper motor testing, and in particular to a stepper motor driver testing tool, which has a simple structure and can automatically connect a wiring terminal with a wiring connector, thereby reducing the work intensity of a tester and preventing wiring errors, thereby improving testing efficiency and preventing damage to the stepper motor; the tool comprises a stepper motor with a cable and a test bench; the stepper motor is on the test bench, the cable is laid flat on the test bench, vertical plates are fixed on both sides of the test bench, a through hole 1 is provided on the vertical plates, the through hole 1 comprises a connected through hole 1 and a through hole 2, the through hole 1 is inclined, the through hole 2 is horizontal, and a roller moving along the through hole 1 is further included, the two rollers are rotatably mounted with a rolling shaft, the rolling shaft is provided with an annular groove, and the end of the annular groove is an inclined surface, and a driving mechanism driving the roller to move along the through hole 1 is further included.

Description

Technical Field

[0001] The invention relates to the technical field of stepper motor testing, and in particular to a stepper motor driver testing tool. Background Art

[0002] A stepper motor is an electric motor that converts electrical pulse signals into corresponding angular displacement or linear displacement. Each time a pulse signal is input, the rotor rotates an angle or moves forward one step. The output angular displacement or linear displacement is proportional to the number of input pulses, and the speed is proportional to the pulse frequency.

[0003] A stepper motor needs to undergo a lot of tests before leaving the factory. For example, the stepper motor is placed vertically on a test bench, and the operation of the lead screw and the screw sleeve is observed after power is supplied. In the prior art, due to the need for power supply, the four terminal blocks of the stepper motor are mostly manually loaded on the connector. This method not only increases the labor intensity of the tester, but may also damage the stepper motor due to wiring errors, which needs to be solved and improved. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a stepper motor driver testing tool, which has a simple structure and can automatically connect the wiring terminals with the connector, reducing the work intensity of the tester. At the same time, it can prevent wiring errors, improve test efficiency, and prevent stepper motor damage.

[0005] A stepper motor driver test fixture of the present invention comprises a stepper motor with a cable and a test bench; the stepper motor is on the test bench, the cable is laid flat on the test bench, vertical plates are fixed on both sides of the test bench, through hole one is provided on the vertical plate, through hole one comprises a through hole one and a through hole two which are connected, through hole one is inclined, through hole two is horizontal, and also comprises a roller moving along through hole one, two rollers are rotatably mounted with a rolling shaft, the rolling shaft is provided with an annular groove, and the end of the annular groove is an inclined surface, and also comprises a driving mechanism driving the roller to move along through hole one;

[0006] A separation mechanism is arranged at one end of the vertical plate away from the stepping motor;

[0007] A wiring connector is arranged on the side of the test bench away from the stepper motor, and the wiring connector is connected to the controller.

[0008] The present invention is further improved, the cable includes four sub-wires, the line connecting the center points of the four sub-wires is an inverted trapezoid, most areas of the four sub-wires are wrapped by the outer jacket, and the area of ​​each sub-wire exposed outside the outer jacket is fixed with a fixing ring with an annular concave, and the four fixing rings are set with elastic bands.

[0009] The present invention is further improved, wherein the driving mechanism comprises a rotating shaft rotatably mounted on the vertical plate, driving arms are fixed at both ends of the rotating shaft, and the driving arms are slidably connected to the central axis of the rolling shaft;

[0010] A gear one is fixed at one end of the rotating shaft, a power mechanism one is fixed on one of the vertical plates, and a rack meshing with the gear one is fixed at the output end of the power mechanism one.

[0011] The present invention is further improved, the other vertical plate is fixed with a transition plate, and the transition plate is fixedly connected with a gear 2 which is coaxially arranged with the rotating shaft;

[0012] One of the driving arms is rotatably mounted with a connecting shaft, a gear 3 meshing with gear 2 is fixed to the connecting shaft, one end of the rotating arm 1 is rotatably mounted with the connecting shaft, the other end of the rotating arm 1 is rotatably mounted with a transition shaft, one end of the rotating arm 2 is rotatably mounted with the transition shaft, and the other end of the rotating arm 2 is rotatably connected to the middle shaft of the rolling shaft;

[0013] The connecting shaft and the transition shaft as well as the transition shaft and the rolling shaft center shaft are all transmission connected.

[0014] The present invention is further improved, the separation mechanism includes a flat plate that slides with the vertical plate, a lifting mechanism for driving the flat plate to rise and fall, three partition plates are installed on the flat plate through a second power mechanism for lifting, the lower half area of ​​the partition plate is an inverted triangle, the upper half area of ​​the partition plate is a rectangle, and three grooves for inserting the partition plates are opened at corresponding positions of the test bench.

[0015] The present invention is further improved, the connector includes a housing slidably connected to the test bench, the housing is provided with four slots, a contact piece for contacting with four sub-wire metal terminals is fixed at the bottom of each slot, the housing is slidably provided with four insulating plates, and the tops of the four insulating plates are connected to a base;

[0016] A fixing plate is fixed on both sides of the test bench, and a through hole 2 is provided on the fixing plate. The through hole 2 includes a through hole 3 and a through hole 4 which are connected. The through hole 3 is parallel to the moving track of the shell, and the through hole 4 is at an angle to the moving track of the shell.

[0017] A guide shaft 1 passing through the through hole 2 is fixed at both ends of the base.

[0018] The present invention is further improved in that the test bench is fixed with a power mechanism three, and the output end of the power mechanism three is connected to the housing.

[0019] The present invention is further improved, where the through hole one also includes a through hole five connected to one end of the through hole one, and the through hole five is vertical.

[0020] The present invention is further improved, where the through hole one also includes a through hole six connected to one end of the through hole two, and the through hole six is ​​vertical.

[0021] The present invention is further improved, with sliders sliding on both sides of the top of the test bench, telescopic rods fixed on the sliders, through-hole three being provided on the sliders, through-hole three comprising connected through-hole seven and through-hole eight, through-hole seven being at an angle to the moving trajectory of the plate, through-hole eight being parallel to the moving trajectory of the plate, and guide shafts two passing through through-hole three being fixed on both sides of the plate.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: after placing the stepper motor at a specified position, the device can automatically connect the wiring terminals to the connector, thereby reducing the workload of the tester, while preventing wiring errors, improving test efficiency, and preventing damage to the stepper motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 yes Figure 1 A partial enlarged view of the middle A part;

[0025] Figure 3 yes Figure 1 A stereogram from the front side perspective;

[0026] Figure 4 yes Figure 3 A partial enlarged view of part B in the middle;

[0027] Figure 5 yes Figure 4 A partial enlarged view of the middle C part;

[0028] Figure 6 yes Figure 1 Stereoscopic image from rear side view;

[0029] Figure 7 is a structural schematic diagram of the power mechanism 2 and the partition plate;

[0030] Figure 8 It is a schematic diagram of the structure of the shell, slots, and rails;

[0031] Fig. 9 It is a schematic diagram of the cable structure after the sub-wires are separated;

[0032] Fig.10 yes Fig. 9 A partial enlarged view of the middle D part;

[0033] Fig.11 is a cross-sectional view of the sub-line;

[0034] Markings in the attached drawings: 1, test bench; 2, limit column; 3, vertical plate; 4, through hole 1; 5, through hole 2; 6, roller; 7, rolling shaft; 8, controller; 9, sub-line; 10, outer cover; 11, fixing ring; 12, elastic belt; 13, rotating shaft; 14, driving arm; 15, gear 1; 16, power mechanism 1; 17, rack; 18, transition plate; 19, gear 2; 20, connecting shaft; 21, gear 3; 22, rotating arm 1; 23, transition shaft; 24, rotating arm 2; 25, chain; 26, flat Plate; 27, track one; 28, lifting mechanism; 29, partition plate; 30, shell; 31, track two; 32, slot; 33, contact piece; 34, insulating plate; 35, base; 36, fixing plate; 37, through hole three; 38, through hole four; 39, guide shaft one; 40, power mechanism three; 41, through hole five; 42, through hole six; 43, slider; 44, track three; 45, telescopic rod; 46, through hole seven; 47, through hole eight; 48, guide shaft two; 49, power mechanism two; 50, metal terminal. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] like Figures 1 to 11 As shown, a stepper motor driver test fixture of the present invention comprises a stepper motor with a cable and a test bench 1; the stepper motor is on the test bench 1, more specifically, the test bench 1 is threadedly connected with a screw, the screw passes through a long strip plate with a long strip hole, and the long strip plate is fixed with a limit column 2 for limiting the stepper motor;

[0038] The cable is laid flat on the test bench 1. Vertical plates 3 are fixed on both sides of the test bench 1. The vertical plates 3 are provided with a through hole 1. The through hole 1 includes a through hole 1 4 and a through hole 2 5 that are connected. The through hole 1 4 is inclined, and the through hole 2 5 is horizontal. The test bench 1 also includes a roller 6 that moves along the through hole 1. The two rollers 6 are rotatably mounted with a rolling shaft 7. The rolling shaft 7 is provided with an annular groove, and the end of the annular groove is an inclined surface. The purpose of such a setting is that when the rolling shaft 7 moves, the cable is inside the annular groove, and the annular groove can limit the cable. When the rolling shaft 7 moves, the cable can be kept in the annular groove;

[0039] It also includes a driving mechanism for driving the roller 6 to move along the through hole 1;

[0040] A separation mechanism is provided at one end of the vertical plate 3 away from the stepping motor;

[0041] A wiring connector is provided on the side of the test bench 1 away from the stepping motor, and the wiring connector is connected to a controller 8;

[0042] The present invention is further improved, the cable includes four sub-wires 9, and the center point connection line of the four sub-wires 9 is an inverted trapezoid. More specifically, as Figure 9-11 As shown, the two sub-wires 9 at the bottom have a smaller outer diameter, the two sub-wires 9 at the top have a larger outer diameter, most of the four sub-wires 9 are wrapped by the jacket 10, and the area of ​​each sub-wire 9 exposed outside the jacket 10 is fixed with a fixing ring 11 with an annular concave, and the four fixing rings 11 are sleeved with elastic bands 12, and the elastic bands 12 are sleeved in the annular concave to prevent the elastic bands 12 from falling off;

[0043] In this embodiment, when in use, the stepper motor is fixed between the four limit columns 2 on the test bench 1, and the cable is manually laid flat between the two vertical plates 3. At this time, the center point connection line of the four sub-wires 9 is an inverted trapezoid, and the overall height of the cable is relatively large. Then the driving mechanism is operated to move the roller 6 and the rolling shaft 7 along the through hole 1. The roller 6 first moves along the through hole 1 4, and the through hole 1 4 is inclined. The distance between the rolling shaft 7 and the test bench 1 becomes smaller and smaller, and the rolling shaft 7 squeezes the cable. Due to the two The outer diameter of the sub-wire 9 is smaller, and the outer diameters of the two sub-wires 9 located at the top are larger. Under the pressure of the rolling shaft 7, the two sub-wires 9 located at the top move to both sides respectively, so as to achieve the effect of pre-flattening the cable, so that the four sub-wires 9 are laid flat on the test bench 1. When the roller 6 moves on the through hole 2 5, the distance between the rolling shaft 7 and the test bench 1 remains unchanged, and the distance between the rolling shaft 7 and the top of the test bench 1 is slightly larger than the outer diameter of the thicker sub-wire 9, so as to prevent the sub-wire 9 from being crushed, and extend the length of the four sub-wires 9 laid flat on the test bench 1;

[0044] Since the sub-wires 9 on the side of the fixing ring 11 close to the stepping motor have been separated and have a direction, it is convenient for the subsequent separation mechanism to separate the adjacent sub-wires 9 without disordering the order of the sub-wires 9. Then, the separation mechanism separates the sub-wires 9 to prevent the metal terminals 50 at the ends of the sub-wires 9 from contacting each other;

[0045] The metal terminals 50 of the sub-wires 9 flattened by the separation mechanism are all facing the right end due to their hard material. At this time, the connector can be operated to clamp the metal terminals 50, and then the stepper motor can be tested through the controller 8.

[0046] The present invention is further improved as follows: Figure 6As shown, the driving mechanism includes a rotating shaft 13 rotatably mounted on the vertical plate 3, and driving arms 14 are fixed at both ends of the rotating shaft 13. The driving arm 14 is slidably connected with the middle axis of the rolling shaft 7. More specifically, the driving arm 14 is provided with a long hole, and the middle axis of the rolling shaft 7 passes through the long hole. A bearing is installed on the middle axis of the rolling shaft 7, and the outer ring of the bearing contacts the inner wall of the long hole.

[0047] A gear 15 is fixed to one end of the rotating shaft 13, and a power mechanism 16 is fixed to one of the vertical plates 3. More specifically, the power mechanism 16 uses an electric telescopic rod 45, and a rack 17 meshing with the gear 15 is fixed to the output end of the power mechanism 16;

[0048] In this embodiment, when it is necessary to move the roller 6 along the through hole 1, the power mechanism 16 is operated to move the rack 17. Since the rack 17 is meshed with the gear 15, the moving rack 17 drives the gear 15, the rotating shaft 13 and the driving arm 14 to rotate about the axis of the rotating shaft 13. Since the center axis of the rolling shaft 7 passes through the long hole and the rotating shaft 13 is located in the middle and upper part of the through hole 1, the driving arm 14 will always generate thrust on the center axis of the rolling shaft 7, thereby moving the roller 6 and others along the through hole 1. During this process, the position of the center axis of the rolling shaft 7 relative to the driving arm 14 changes.

[0049] The present invention is further improved as follows: Figure 4 As shown, another vertical plate 3 is fixed with a transition plate 18, and the transition plate 18 is fixedly connected with a gear 2 19 coaxially arranged with the rotating shaft 13;

[0050] One of the driving arms 14 is rotatably mounted with a connecting shaft 20, a gear 3 21 meshing with a gear 2 19 is fixed to the connecting shaft 20, one end of a rotating arm 1 22 is rotatably mounted on the connecting shaft 20, a transition shaft 23 is rotatably mounted on the other end of the rotating arm 1 22, one end of a rotating arm 2 24 is rotatably mounted on the transition shaft 23, and the other end of the rotating arm 24 is rotatably connected to the middle axis of the rolling shaft 7;

[0051] The connecting shaft 20 and the transition shaft 23 as well as the transition shaft 23 and the middle shaft of the rolling shaft 7 are connected by a chain 25, and the outer diameters of the sprockets on the connecting shaft 20 and the transition shaft 23 and the sprockets at the ends of the transition shaft 23 and the middle shaft of the rolling shaft 7 are consistent;

[0052] In this embodiment, when the driving arm 14 rotates with the rotating shaft 13 as the axis, the gear 3 21 thereon is driven to also revolve. Since the gear 2 19 is fixed and does not rotate, the gear 3 21 revolves and rotates at the same time. With the cooperation of the sprocket and the chain 25, the rolling shaft 7 is driven to rotate. When the distance between the rolling shaft 7 and the rotating shaft 13 changes, the rotating arm 1 22 and the rotating arm 2 24 both rotate. Since the distance between the connecting shaft 20 and the transition shaft 23 and between the transition shaft 23 and the center axis of the rolling shaft 7 are unchanged, the rotation of the rolling shaft 7 is not affected.

[0053] like Figure 4 As shown, when the driving arm 14 rotates counterclockwise, the gear three 21 and the connecting shaft 20 rotate counterclockwise, and also drive the rolling shaft 7 to rotate counterclockwise. When the rolling shaft 7 rotates, it can generate thrust on the cable to straighten the cable, so as to better determine the position of the metal terminal 50 and make it easier to position the connector.

[0054] The present invention is further improved as follows: Figure 5 and Figure 7 As shown, the separation mechanism includes a flat plate 26 that is slidably matched with the vertical plate 3, and the flat plate 26 slides on a track 27, and a lifting mechanism 28 is used to drive the flat plate 26 to rise and fall. More specifically, the lifting mechanism 28 is a screw structure, and three partition plates 29 are installed on the flat plate 26 through a power mechanism 2 49, and the power mechanism 3 40 adopts a cylinder;

[0055] The lower half of the partition plate 29 is in the shape of an inverted triangle, the upper half of the partition plate 29 is in the shape of a rectangle, and three grooves for inserting the partition plate 29 are provided at corresponding positions of the test bench 1;

[0056] In this embodiment, when the rolling shaft 7 moves to the end of the through hole 25, the lifting mechanism 28 is operated to lower the flat plate 26. Under the constraint of the elastic belt 12, the sub-wires 9 on the right side of the elastic belt 12 may still be in a rectangular distribution state. However, affected by the rolling shaft 7, the sub-wires 9 on the right side of the elastic belt 12 have a direction selection. During the downward movement of the flat plate 26, under the squeezing of the flat plate 26, the two sub-wires 9 located above move to both sides respectively. When the flat plate 26 reaches the bottom, the four sub-wires 9 are in a flat state. Then the power mechanism 2 49 is operated to move the partition plate 29 downward. The lower half of the partition plate 29 is an inverted triangle, which can separate adjacent sub-wires 9 and increase the spacing between adjacent sub-wires 9. When the power mechanism 2 49 reaches the limit position, the upper half of the partition plate 29 contacts the surface of the sub-wires 9. The upper half of the partition plate 29 is a rectangle, which can fix the spacing between adjacent sub-wires 9.

[0057] The present invention is further improved as follows: Figure 2 , Figure 5 and Figure 8As shown, the connector includes a housing 30 slidably connected to the test bench 1, the housing 30 slides on the second track 31, the housing 30 is provided with four slots 32, each slot 32 is fixed with a contact piece 33 for contacting the metal terminals 50 of the four sub-wires 9 at the bottom, the housing 30 slides with four insulating plates 34, and the tops of the four insulating plates 34 are connected with a base 35;

[0058] A fixing plate 36 is fixed on both sides of the test bench 1. The fixing plate 36 is provided with a through hole 2. The through hole 2 includes a through hole 37 and a through hole 4 38 connected to each other. The through hole 37 is parallel to the moving track of the housing 30, and the through hole 4 38 is at an angle to the moving track of the housing 30.

[0059] A guide shaft 1 39 passing through the through hole 2 is fixed to both ends of the base 35;

[0060] The present invention is further improved, the test bench 1 is fixed with a power mechanism 3 40, and the output end of the power mechanism 3 40 is connected to the housing 30;

[0061] In this embodiment, after the power mechanism 2 49 reaches the limit position, the metal terminal 50 of the sub-line 9 faces the four slots 32 of the shell 30, and then the power mechanism 3 40 is operated to make the shell 30 and other components slide along the track 2 31, and the guide shaft 1 39 first slides on the through hole 37 without affecting the position of the base 35 and other positions, so that the metal terminal 50 is smoothly inserted into the slot 32, and then the guide shaft 1 39 slides on the through hole 4 38, so that the base 35 and the insulating plate 34 move downward, and the metal terminal 50 is pressed against the contact piece 33, thereby achieving conduction, and the controller 8 can control the stepper motor.

[0062] The present invention is further improved as follows: Figure 1 and Figure 6 As shown, the through hole 1 also includes a through hole 5 41 connected to one end of the through hole 1 4, and the through hole 5 41 is vertical;

[0063] In this embodiment, if Figure 1 and Figure 6 As shown, the center axis of the rolling shaft 7 is located at the end of the through hole 5 41 away from the through hole 1 4. At this time, the distance between the rolling shaft 7 and the test bench 1 is relatively large, which is convenient for manually laying the cable flat on the test bench 1.

[0064] The present invention is further improved as follows: Figure 1 and Figure 6 As shown, the through hole one also includes a through hole six 42 connected to one end of the through hole two 5, and the through hole six 42 is vertical;

[0065] In this embodiment, after the test is completed, the power mechanism is operated to move the roller 6 to the top of the through hole 6 42. At this time, the rolling shaft 7 is separated from the cable, making it more convenient to pull out the cable.

[0066] The present invention is further improved as follows: Figure 5 As shown, sliders 43 are slidably arranged on both sides of the top of the test bench 1, and the sliders 43 slide on rails three 44. A telescopic rod 45 is fixed to the slider 43, and the distance between the telescopic end of the telescopic rod 45 and the slider 43 can be adjusted. The slider 43 is provided with a through hole three, and the through hole three includes a connected through hole seven 46 and a through hole eight 47. The through hole seven 46 is located at the top, and there is an angle between the through hole seven 46 and the moving trajectory of the plate 26. The through hole eight 47 is parallel to the moving trajectory of the plate 26. Guide shafts two 48 passing through the through hole three are fixed on both sides of the plate 26.

[0067] In this embodiment, when the flat plate 26 descends, the guide shaft 2 48 is driven to move synchronously. The guide shaft 2 48 first passes through the through hole 7 46. There is an angle between the through hole 7 46 and the moving trajectory of the flat plate 26, so that the slider 43 and the telescopic rod 45 move along the track 3 44. The telescopic rod 45 is relatively thin and will not affect the descent of the flat plate 26. The guide shaft 2 48 first passes through the through hole 8 47. The through hole 8 47 is parallel to the moving trajectory of the flat plate 26 and will not affect the position of the slider 43, etc. The end of the telescopic rod 45 can prevent the end sub-line 9 from excessive displacement, so as to better position the metal terminal 50.

[0068] When the present invention is used, the initial state is as follows Figure 1 , Figure 3 and Figure 6 As shown, the stepper motor is fixed between the four limit columns 2 on the test bench 1, and the cable is manually laid flat between the two vertical plates 3, and the central axis of the rolling shaft 7 is located at the end of the through hole 5 41 away from the through hole 1 4. At this time, the distance between the rolling shaft 7 and the test bench 1 is large, which is convenient for manually laying the cable flat on the test bench 1;

[0069] Then, the power mechanism 16 is operated to move the rack 17. Since the rack 17 is meshed with the gear 15, the moving rack 17 drives the gear 15, the rotating shaft 13 and the driving arm 14 to rotate about the axis of the rotating shaft 13. Since the center axis of the rolling shaft 7 passes through the long hole and the rotating shaft 13 is located in the middle and upper part of the through hole 1, the driving arm 14 will always generate thrust on the center axis of the rolling shaft 7, so that the roller 6 and the like move along the through hole 1. In this process, the position of the center axis of the rolling shaft 7 relative to the driving arm 14 changes.

[0070] When the driving arm 14 rotates with the rotating shaft 13 as the axis, the gear 3 21 thereon is driven to also revolve. Since the gear 2 19 is fixed and does not rotate, the gear 3 21 revolves and rotates at the same time. With the cooperation of the sprocket and the chain 25, the rolling shaft 7 is driven to rotate. When the distance between the rolling shaft 7 and the rotating shaft 13 changes, the rotating arm 1 22 and the rotating arm 2 24 both rotate. Since the distance between the connecting shaft 20 and the transition shaft 23 and between the transition shaft 23 and the center axis of the rolling shaft 7 are unchanged, the rotation of the rolling shaft 7 is not affected.

[0071] like Figure 4 As shown, when the driving arm 14 rotates counterclockwise, the gear 3 21 and the connecting shaft 20 rotate counterclockwise, and also drive the rolling shaft 7 to rotate counterclockwise. When the rolling shaft 7 rotates, it can generate thrust on the cable to make the cable straight, so as to better determine the position of the metal terminal 50, which is more convenient for the connector to be positioned;

[0072] When the roller 6 reaches the end of the through hole 2 5, the power mechanism 1 16 is stopped;

[0073] The lifting mechanism 28 is operated to lower the flat plate 26. Under the restraint of the elastic band 12, the sub-wires 9 on the right side of the elastic band 12 may still be in a rectangular distribution state. However, affected by the rolling shaft 7, the sub-wires 9 on the right side of the elastic band 12 have already had a direction choice. During the downward movement of the flat plate 26, under the squeezing of the flat plate 26, the two sub-wires 9 located on the upper side move to both sides respectively. When the flat plate 26 reaches the bottom, the four sub-wires 9 are in a flat state. Then the power mechanism 2 49 is operated to move the partition plate 29 downward. The lower half of the partition plate 29 is in an inverted triangle shape, which can separate adjacent sub-wires 9 and increase the spacing between adjacent sub-wires 9. When the power mechanism 2 49 reaches the limit position, the upper half of the partition plate 29 The domain is in contact with the surface of the sub-wire 9, and the upper half of the partition plate 29 is rectangular, which can fix the spacing between adjacent sub-wires 9. At the same time, when the flat plate 26 descends, it drives the guide shaft 2 48 to move synchronously. The guide shaft 2 48 first passes through the through hole 7 46, and there is an angle between the through hole 7 46 and the moving trajectory of the flat plate 26, so that the slider 43 and the telescopic rod 45 move along the track 3 44. The thickness of the telescopic rod 45 is small and will not affect the descent of the flat plate 26. The guide shaft 2 48 first passes through the through hole 8 47, and the through hole 8 47 is parallel to the moving trajectory of the flat plate 26, and will not affect the position of the slider 43, etc. The end of the telescopic rod 45 can prevent the end sub-wire 9 from excessive displacement, and the telescopic rod 45 and the partition plate 29 better position the metal terminal 50;

[0074] Then, the power mechanism 3 40 is operated to make the housing 30 and other components slide along the track 2 31, and the guide shaft 1 39 first slides on the through hole 3 37 without affecting the position of the base 35 and other components, so that the metal terminal 50 is smoothly inserted into the slot 32, and then the guide shaft 1 39 slides on the through hole 4 38, so that the base 35 and the insulating plate 34 move downward, and the metal terminal 50 is pressed against the contact piece 33, so as to achieve conduction, and the controller 8 can control the stepping motor;

[0075] After the test is completed, operate the lifting mechanism 28 and the power mechanism three 40 to restore the components to their initial positions, then operate the power mechanism one 16 to move the roller 6 to the top of the through hole six 42, and then remove the stepper motor and the cable.

[0076] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A stepper motor driver test tool, comprising a stepper motor with a cable and a test bench; characterized in that: The stepper motor is on the test bench, the cable is laid flat on the test bench, vertical plates are fixed on both sides of the test bench, through hole one is provided on the vertical plates, through hole one includes through hole one and through hole two which are connected, through hole one is inclined, through hole two is horizontal, and also includes a roller moving along through hole one, two rollers are rotatably mounted with a rolling shaft, the rolling shaft is provided with an annular groove, and the end of the annular groove is an inclined surface, and also includes a driving mechanism for driving the roller to move along through hole one; A separation mechanism is arranged at one end of the vertical plate away from the stepping motor; A wiring connector is arranged on the side of the test bench away from the stepper motor, and the wiring connector is connected to the controller.

2. A stepper motor driver test fixture as claimed in claim 1, characterized in that: The cable comprises four sub-wires, the center points of the four sub-wires are connected in an inverted trapezoidal shape, most of the four sub-wires are wrapped by a jacket, and each sub-wire is fixed with a fixing ring with an annular concave in the area exposed outside the jacket, and the four fixing rings are covered with elastic bands.

3. A stepper motor driver test fixture as claimed in claim 2, characterized in that: The driving mechanism comprises a rotating shaft rotatably mounted on the vertical plate, with driving arms fixed at both ends of the rotating shaft, and the driving arms are slidably connected to the central axis of the rolling shaft; A gear one is fixed at one end of the rotating shaft, a power mechanism one is fixed on one of the vertical plates, and a rack meshing with the gear one is fixed at the output end of the power mechanism one.

4. A stepper motor driver test fixture as claimed in claim 3, characterized in that: The other vertical plate is fixed with a transition plate, and the transition plate is fixedly connected with a gear 2 coaxially arranged with the rotating shaft; One of the driving arms is rotatably mounted with a connecting shaft, a gear 3 meshing with gear 2 is fixed to the connecting shaft, one end of the rotating arm 1 is rotatably mounted with the connecting shaft, the other end of the rotating arm 1 is rotatably mounted with a transition shaft, one end of the rotating arm 2 is rotatably mounted with the transition shaft, and the other end of the rotating arm 2 is rotatably connected to the middle shaft of the rolling shaft; The connecting shaft and the transition shaft as well as the transition shaft and the rolling shaft center shaft are all transmission connected.

5. A stepper motor driver test fixture as claimed in claim 4, characterized in that: The separation mechanism includes a flat plate that slides with the vertical plate, and a lifting mechanism for driving the flat plate to rise and fall. Three partition plates are installed on the flat plate through a second power mechanism for lifting. The lower half of the partition plate is an inverted triangle, and the upper half of the partition plate is a rectangle. Three grooves for inserting the partition plates are opened at corresponding positions of the test bench.

6. A stepper motor driver test fixture as claimed in claim 5, characterized in that: The connector includes a housing slidably connected to the test bench, the housing is provided with four slots, a contact piece for contacting with four sub-wire metal terminals is fixed at the bottom of each slot, and four insulating plates are slidably provided on the housing, and the tops of the four insulating plates are connected to a base; A fixing plate is fixed on both sides of the test bench, and a through hole 2 is provided on the fixing plate. The through hole 2 includes a through hole 3 and a through hole 4 which are connected. The through hole 3 is parallel to the moving track of the shell, and the through hole 4 is at an angle to the moving track of the shell. A guide shaft 1 passing through the through hole 2 is fixed at both ends of the base.

7. A stepper motor driver test fixture as claimed in claim 6, characterized in that: The test bench is fixed with a power mechanism three, and the output end of the power mechanism three is connected with the shell.

8. A stepper motor driver testing tool as claimed in claim 7, characterized in that: The through hole one also includes a through hole five connected to one end of the through hole one, and the through hole five is vertical.

9. A stepper motor driver test fixture as claimed in claim 8, characterized in that: The through hole one also includes a through hole six connected to one end of the through hole two, and the through hole six is ​​vertical.

10. A stepper motor driver test fixture as claimed in claim 9, characterized in that: There are sliding blocks on both sides of the top of the test bench, and telescopic rods are fixed on the sliders. The sliders have through holes three, and through holes three include connected through holes seven and eight. There is an angle between through hole seven and the moving trajectory of the plate, and through hole eight is parallel to the moving trajectory of the plate. Guide shafts two passing through through holes three are fixed on both sides of the plate.

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