CN211626770U

CN211626770U - Test bench for torque test of stepping motor

Info

Publication number: CN211626770U
Application number: CN202020369999.8U
Authority: CN
Inventors: 缪钦盛
Original assignee: Wuxi Shiyuan Motor Co ltd
Current assignee: Wuxi Shiyuan Motor Co ltd
Priority date: 2020-03-21
Filing date: 2020-03-21
Publication date: 2020-10-02
Anticipated expiration: 2030-03-21

Abstract

The utility model discloses a test bench for testing the torque of a stepping motor, which comprises a test bench, the test frame is provided with a test disc and a stepping motor, the test frame is provided with a positioning device, the positioning device comprises a supporting seat arranged on the test frame, a positioning shaft fixedly arranged on the supporting seat in a penetrating way, and a positioning seat rotationally connected with the positioning shaft, the positioning shaft is arranged at the edge of the supporting seat, a limiting plate is fixedly connected to the supporting seat, a limiting hole is formed in the limiting plate, the outer side wall of the positioning seat is fixedly connected with a limiting rod which penetrates out of the limiting hole, a handle is connected with one end of the limiting rod far away from the positioning seat in a threaded manner, a limiting sleeve is slidably arranged on the limiting rod in a penetrating manner, the width of stop collar is greater than the width in spacing hole, the stop collar sets up between spacing hole and handle. The utility model discloses the effect of the test precision of improvement torque has.

Description

Test bench for torque test of stepping motor

Technical Field

The utility model belongs to the technical field of step motor's technique and specifically relates to a test rack for step motor torque test is related to.

Background

The stepping motor is an open-loop control motor which converts an electric pulse signal into angular displacement or linear displacement, is a main executive element in a modern digital program control system, and is extremely widely applied. The torque of the motor, simply speaking, means the magnitude of the rotating force. Generally, the stiffness of the motor to drive the machine to rotate is the torque of the motor, which is a torque, and if the torque of the motor is too small, the motor cannot drive the object to be driven, i.e. the motor is not felt to be strong enough. Therefore, before the motor is used, the torque of the motor needs to be tested, which is also an important parameter of the motor.

At present, chinese patent publication No. CN207622904U discloses a loading device for a start torque test of a stepping motor, in which a test disc of the stepping motor is connected in series with a torque sensor, an annular test rope is connected with the test disc and a friction disc, the friction disc is driven by any rotating mechanism to rotate, the annular test rope moves along with the friction disc and generates sliding friction with the test disc, and the sliding friction force is converted into a loading torque through the test disc.

The technical scheme has the following defects: the device connects the stepping motor to be tested on the test support through the coupler, and then loads the stepping motor through a dynamic friction method, so that the starting torque of the stepping motor is tested. However, in an actual test, the output shaft of the motor vibrates due to the start of the motor, and after the test rack tests a plurality of motors, a phenomenon occurs in which a coupling connected to the motor on the test rack deflects. At this time, the accuracy of the motor torque test may be affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a test rack for step motor torque test, has the effect of the test precision that improves the torque to the not enough of prior art existence.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a test bench frame for step-by-step motor torque test, includes the test jig, be provided with test disc and step-by-step motor on the test jig, be provided with positioner on the test jig, positioner including setting up supporting seat on the test jig, fixed location axle of wearing to establish on the supporting seat, rotate the positioning seat of being connected with the location axle, the location axle sets up the border at the supporting seat, fixedly connected with limiting plate on the supporting seat, spacing hole has been seted up on the limiting plate, the lateral wall fixedly connected with gag lever post of positioning seat, the gag lever post is worn out from spacing hole, the one end threaded connection that the locating seat was kept away from to the gag lever post has the handle, slide on the gag lever post and wear to be equipped with spacing cover, the width of spacing cover is greater than the width in spacing hole, spacing cover sets up.

Through adopting above-mentioned technical scheme, the staff need test step motor and connect through the shaft coupling and be connected with the test disc, and step motor places on the positioning seat, adjusts the positioning seat and around the location axle rotation, adjusts the position of positioning seat on the supporting seat, and at this moment, the gag lever post slides in spacing downthehole. After the positioning seat rotates to a proper position around the positioning shaft, the rotating handle is abutted against the limiting sleeve, so that the limiting sleeve is extruded between the handle and the limiting plate, the adjusted positioning seat is positioned, and an output shaft of the stepping motor to be tested on the positioning seat is kept at a position vertical to the plane of the test disc. The utility model discloses a positioner's setting has the effect that improves the precision of torque test.

The present invention may be further configured in a preferred embodiment as: the test jig is provided with a sliding groove, and the supporting seat is connected in the sliding groove in a sliding mode.

Through adopting above-mentioned technical scheme, according to the step motor's that awaits measuring model size, adjust the supporting seat and slide to suitable position in the sliding tray for the positioning seat supports at step motor's central point and puts, improves step motor positional stability on the positioning seat, further improves the precision of torque test.

The present invention may be further configured in a preferred embodiment as: the length direction of the sliding groove is perpendicular to the plane of the test disc.

Through adopting above-mentioned technical scheme for the supporting seat slides with test disc vertically direction all the time, reduces the possibility that the direction of supporting seat takes place the skew, has reduced the phenomenon that the position of adjusting the supporting seat produced the error, further improves the precision of torque test.

The present invention may be further configured in a preferred embodiment as: the limiting groove is formed in the inner side wall of the sliding groove, the supporting seat is fixedly connected with a limiting strip, and the limiting strip is connected in the limiting groove in a matched mode.

Through adopting above-mentioned technical scheme, when the staff adjusted the supporting seat and slided along the sliding tray, spacing strip slided in the spacing inslot cooperation, played the effect of direction to the slip of supporting seat.

The present invention may be further configured in a preferred embodiment as: and an air cylinder is arranged on the test frame, and an output shaft of the air cylinder is fixedly connected with the supporting seat.

Through adopting above-mentioned technical scheme, staff adjusting cylinder's output shaft is flexible, promotes the supporting seat by the cylinder and slides along the sliding tray, has improved the work efficiency that the staff adjusted the position of supporting seat.

The present invention may be further configured in a preferred embodiment as: the length direction of the output shaft of the air cylinder is perpendicular to the plane of the test disc.

Through adopting above-mentioned technical scheme, the output shaft of cylinder promotes the supporting seat and slides along the direction with the test tray vertically all the time, reduces the position of supporting seat and takes place the possibility of skew.

The present invention may be further configured in a preferred embodiment as: the stepping motor is connected with the positioning seat through a connecting piece.

Through adopting above-mentioned technical scheme, step motor can be by more stable connection on the positioning seat, and the connected mode of connecting piece has the effect that the staff of being convenient for dismantled step motor simultaneously.

The present invention may be further configured in a preferred embodiment as: one end of the positioning shaft far away from the supporting seat is fixedly connected with a positioning block.

Through adopting above-mentioned technical scheme, the locating piece plays spacing effect in the top of location axle, has reduced the possibility that the positioning seat from supporting seat top skew comes down.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through the arrangement of the positioning device, the output shaft of the stepping motor to be tested and the coupler are always connected on the same straight line, so that the effect of improving the test accuracy of the torque is achieved;

2. through the arrangement of the sliding groove, the position of the positioning seat is adjusted according to the size of the tested model of the stepping motor, and the position stability of the stepping motor on the positioning seat is improved;

3. through the setting of cylinder, improve staff's sliding support seat's work efficiency.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a positioning device;

FIG. 2 is an enlarged schematic structural view of a portion A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of an embodiment of a limiting groove.

In the figure, 1, a test frame; 2. a test tray; 3. a stepping motor; 4. a positioning device; 5. a supporting seat; 6. positioning the shaft; 7. positioning seats; 8. a limiting plate; 9. a limiting hole; 10. a handle; 11. a limiting sleeve; 12. a sliding groove; 13. a limiting groove; 14. a limiting strip; 15. a cylinder; 16. positioning blocks; 17. a limiting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): referring to fig. 1 and 3, for the utility model discloses a test bench for step motor torque test, including test jig 1. The testing jig 1 is provided with a testing disc 2 and a stepping motor 3, the testing disc 2 is connected with an output shaft of the stepping motor 3 through a coupler, and the testing jig 1 is provided with a positioning device 4.

Referring to fig. 2 and 3, the positioning device 4 includes a supporting seat 5 disposed on the test rack 1, a positioning shaft 6 vertically welded on the supporting seat 5, and a positioning seat 7 rotatably connected to the positioning shaft 6. The upper surfaces of the positioning seat 7 and the supporting seat 5 are all set to be circular, the diameter of the positioning seat 7 is smaller than that of the supporting seat 5, the positioning shaft 6 is arranged at the edge of the supporting seat 5, and one end of the positioning shaft 6, far away from the supporting seat 5, is fixedly connected with a positioning block 16 (the positioning block and the positioning shaft 6 are integrally formed). The welding has the limiting plate 8 on the supporting seat 5, has seted up spacing hole 9 on the limiting plate 8, and the welding of the lateral wall of positioning seat 7 has gag lever post 17, and gag lever post 17 wears out from spacing hole 9, and the one end threaded connection that positioning seat 7 was kept away from to gag lever post 17 has handle 10, and stop collar 11 is worn to be equipped with in the sliding on the gag lever post 17, and the width of stop collar 11 is greater than the width of spacing hole 9, and stop collar 11 sets up between spacing hole 9 and handle 10.

Referring to fig. 1 and 2, a worker places a stepping motor 3 to be tested on a positioning seat 7, the adjusting positioning seat 7 rotates around a positioning shaft 6, the position of the positioning seat 7 on a supporting seat 5 is adjusted, at the moment, a limiting rod slides left and right in a limiting hole 9, when an output shaft of the stepping motor 3 and a coupler are kept on the same straight line, at the moment, a handle 10 is screwed down to enable a limiting sleeve 11 to be tightly abutted between a limiting plate 8 and the handle 10, the positioning of the positioning seat 7 is achieved, and then testing is started.

Referring to fig. 1 and 2, the stepping motor 3 is bolted to the positioning base 7 because the stepping motor 3 vibrates during operation. The position stability of the stepping motor 3 on the positioning seat 7 is improved, and the phenomenon that the stepping motor 3 deviates due to vibration is reduced, so that the accuracy of torque testing is improved.

Referring to fig. 2 and 3, when the sizes of the stepping motors 3 to be tested are different, the positions of the supporting seats 5 need to be adjusted, so that the test jig 1 is provided with the sliding grooves 12, the supporting seats 5 are slidably connected in the sliding grooves 12, and the length directions of the sliding grooves 12 are perpendicular to the plane of the test tray 2. The staff adjusts supporting seat 5 and slides to suitable position along sliding tray 12 for supporting seat 5 is located the below of step motor 3's central point and puts, further improves step motor 3 positional stability on positioning seat 7, thereby improves the precision of torque test.

Referring to fig. 3, a limiting groove 13 is formed in the inner side wall of the sliding groove 12, a limiting strip 14 is fixedly connected to the supporting seat 5 (the limiting strip 14 and the supporting seat 5 are integrally formed), and the limiting strip 14 is connected to the limiting groove 13 in a matching manner. When the staff adjusts supporting seat 5 and slides along sliding tray 12, spacing strip 14 cooperates the slip in spacing groove 13, plays the effect of direction to the slip of supporting seat 5.

Referring to fig. 1, in order to improve the working efficiency of the worker for adjusting the sliding of the supporting seat 5 along the sliding groove 12, an air cylinder 15 is arranged on the testing jig 1, and an output shaft of the air cylinder 15 is connected with the supporting seat 5 through a coupler. The length direction of the output shaft of the air cylinder 15 is perpendicular to the plane of the test disc 2. The output shaft of the air cylinder 15 is adjusted by the operator to extend, and the air cylinder 15 pushes the support seat 5 to slide to a proper position along the sliding groove 12.

The implementation principle of the embodiment is as follows: the staff is according to the model size of the step motor 3 that awaits measuring, and adjusting cylinder 15 promotes supporting seat 5 and slides to suitable position along sliding tray 12, then connects step motor 3 on positioning seat 7 through the bolt, adjusts the base and rotates suitable angle around location axle 6 for step motor 3's output shaft and the coupling joint on the test disc 2 are on same straight line. The staff twist grip 10 supports tightly on stop collar 11 for stop collar 11 extrudes between handle 10 and limiting plate 8, realizes the location to positioning seat 7. Then, the output shaft of the stepping motor 3 to be tested is connected to the test board 2, and the test is started.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a test bench for step motor torque test, includes test jig (1), be provided with test disc (2) and step motor (3) on test jig (1), its characterized in that: the testing jig is characterized in that a positioning device (4) is arranged on the testing jig (1), the positioning device (4) comprises a supporting seat (5) arranged on the testing jig (1), a positioning shaft (6) fixedly penetrating through the supporting seat (5), and a positioning seat (7) rotatably connected with the positioning shaft (6), the positioning shaft (6) is arranged at the edge of the supporting seat (5), a limiting plate (8) is fixedly connected on the supporting seat (5), a limiting hole (9) is formed in the limiting plate (8), a limiting rod (17) is fixedly connected to the outer side wall of the positioning seat (7), the limiting rod (17) penetrates out of the limiting hole (9), a handle (10) is connected to one end, far away from the positioning seat (7), of the limiting rod (17) through a threaded connection, a limiting sleeve (11) is slidably arranged on the limiting rod (17), and the width of the limiting sleeve (11) is greater than that of the limiting hole (9), the limiting sleeve (11) is arranged between the limiting hole (9) and the handle (10).

2. The test rig for stepper motor torque testing as defined in claim 1, wherein: a sliding groove (12) is formed in the test frame (1), and the supporting seat (5) is connected into the sliding groove (12) in a sliding mode.

3. The test rig for stepper motor torque testing as defined in claim 2, wherein: the length direction of the sliding groove (12) is vertical to the plane of the test disc (2).

4. The test rig for stepper motor torque testing of claim 3, wherein: limiting groove (13) have been seted up to the inside wall of sliding tray (12), fixedly connected with spacing (14) on supporting seat (5), spacing (14) cooperation is connected in limiting groove (13).

5. The test rig for stepper motor torque testing as defined in claim 1, wherein: the testing jig is characterized in that an air cylinder (15) is arranged on the testing jig (1), and an output shaft of the air cylinder (15) is fixedly connected with the supporting seat (5).

6. The test rig for stepper motor torque testing of claim 5, wherein: the length direction of the output shaft of the air cylinder (15) is vertical to the plane of the test disc (2).

7. The test rig for stepper motor torque testing as defined in claim 2, wherein: the stepping motor (3) is connected with the positioning seat (7) through a connecting piece.

8. The test rig for stepper motor torque testing of claim 7, wherein: and one end of the positioning shaft (6) far away from the supporting seat (5) is fixedly connected with a positioning block (16).