CN216978199U - Torsion testing device - Google Patents

Abstract

The utility model relates to a torsion testing device, which comprises a measuring seat, a force sensor, a motor module, a flexible coupling and an output shaft. The force sensor is fixedly arranged on the measuring seat. The motor module is arranged on the measuring seat and is provided with a motor fixing frame, an arm rod and a motor. The motor fixing frame can be rotationally arranged on the measuring seat by taking a torsion axis as an axis; the arm rod protrudes out of the motor fixing frame and can abut against the force sensor, so that the rotation of the motor fixing frame is limited; the motor is fixedly arranged on the motor fixing frame. Two ends of the flexible coupling are respectively connected with the driving shaft and the output shaft. The other end of the output shaft is used for connecting a pivoting piece of the torsion to be measured. Therefore, the torque force measuring device can be easily integrated into an automatic production line to quickly and accurately measure the torque force value of the production line part.

Description

Torque Test Device

technical field

The utility model relates to a device for measuring the torque value, in particular to a torque testing device which can quickly measure the torque value in an automatic production line.

Background technique

Please refer to FIG. 10 , the prior art torque testing machine has a base 91 , a force sensor (not shown), a measuring base 92 , a rotating base 93 and a motor 94 . One end of the force sensor is fixed on the base 91 , the measuring base 92 is fixed on the other end of the force sensor, the rotating base 93 is set on the base 91 so as to move around the measuring base 92 , and the motor 94 drives the rotating base 93 to move around relative to the base 91 . . Before measuring the torque, manually fix the base end 951 of the pivot member 95 to be tested (for example, the base that can adjust the pitch angle of the computer screen) to the measurement base 92, and fix the pivot end of the pivot member 95 After connecting the swivel base 93 (specifically, connecting the swivel base 93 through an extension jig 96 ), the motor 94 will drive the swivel base 93 to move around, thereby making the pivot end of the pivot member 95 rotate relative to the base end 951 , At the same time, the torque characteristic of the pivoting member 95 is measured with a force sensor. Existing torsion testing machines are generally used for sampling inspection of mass-produced pivots to ensure quality.

However, some of the pivots 95 have stricter quality requirements. Therefore, a comprehensive inspection of the pivots 95 in the production line must be carried out to ensure that the torque characteristics of each pivot 95 meet the requirements before shipment. The torsion testing machine of this type still needs to manually fix the pivoting member 95, and the measurement speed is too slow to meet the full inspection requirements.

Therefore, the prior art torsion testing machines do need to be improved.

Utility model content

In view of the aforementioned shortcomings and deficiencies of the prior art, the present invention provides a torque testing device to improve the measurement speed.

In order to achieve the above-mentioned purpose of the utility model, the technical means adopted by the present utility model is to design a torsion force testing device for testing a pivoting member, and the torsion force testing device includes:

a measuring seat;

a force sensor, which is fixed on the measuring seat and has at least one measuring surface; the force sensor can measure the force against the at least one measuring surface;

A motor module, which is arranged on the measuring base, the motor module has:

a motor fixing frame, which can be rotatably arranged on the measuring seat with a torsion axis as an axis,

an arm rod, which protrudes from one side of the motor fixing frame and extends radially of the torsion axis; the outer end of the arm rod selectively abuts against the at least one measuring surface of the force sensor to limit the fixing of the motor The frame cannot be rotated relative to the measuring base;

a motor, which is fixed on the motor fixing frame, and has a driving shaft, which is aligned with the torsion axis and rotatably penetrates the motor fixing frame and the measuring seat;

a flexible coupling connecting the drive shaft of the motor and having;

a first fixing ring located at one end of the flexible coupling and sleeved on the drive shaft of the motor;

a second fixing ring located at the other end of the flexible coupling;

Wherein, the center line of the second fixed ring and the center line of the first fixed ring can be non-parallel, or the center line of the second fixed ring and the center line of the first fixed ring can be parallel and staggered;

an output shaft, one end of which passes through the second fixing ring of the flexible coupling, and the other end is used for detachably connecting the pivoting member.

When the utility model is in use, the measuring seat can be arranged on a positioning mechanism of an automatic production line. When the pivoting member of the production line moves to the positioning mechanism, the positioning mechanism drives the torque testing device to move toward the pivoting member, and connects the output shaft of the torque testing device to the pivoting member. Then, the motor of the torsion test device applies torsion force to the pivoting member through the flexible coupling and the output shaft, and the reaction force from the pivoting member causes the motor fixing frame to rotate in the opposite direction and abut against the force sensor of the measuring base, and then The torsional force applied by the motor to the pivoting member (that is, the torsional force borne by the pivoting member) can be calculated from the measured value of the force sensor.

The advantages of the present utility model are:

First, it can be easily integrated into existing automated production lines to achieve fully automatic torque measurement. Specifically, in the present invention, the force sensor and the pivot member are respectively arranged on the fixed end (ie, the body of the motor) and the driving end (ie, the drive shaft of the motor) of the motor module, instead of applying the force as in the existing torsion testing machine. The sensor and the pivoting member are connected in series with the driving end of the motor. Therefore, when the utility model measures the torsional force of the pivoting member, the torsional force can be measured as long as the output shaft is connected to the pivoting member; The connection/disconnection can be achieved by simple mechanical actions, such as linear reciprocating motion, so the utility model can be easily integrated into the existing automated production line and quickly measure the torsion characteristics of the pivoting parts of the production line, which can affect the production line Pivot parts are fully inspected.

Second, the flexible coupling absorbs the misalignment between the pivot member and the drive shaft of the motor, ensuring accurate torque measurement. Specifically, although the positioning mechanism of the production line enables the output shaft of the torsion testing device to be connected to the pivoting member (for example, inserted into a groove of the pivoting member), in practice it is difficult to ensure that the axis of the output shaft of the torsion testing device is in line with that of the pivoting member. The axis of rotation of the pivot can be precisely aligned without any misalignment, while the flexible coupling ensures accurate torque measurement with a slight misalignment between the output shaft and the pivot.

Further, the torsion testing device further has a lower bearing, which is arranged between the bottom of the motor fixing frame and the measuring seat, and is located on the torsion axis, so that the motor fixing frame can be opposite to the measuring seat Rotation; an upper bearing, which is arranged between the top of the motor fixing frame and the measuring seat, and is located on the torsion axis, so that the motor fixing frame can rotate relative to the measuring seat.

Further, the drive shaft of the motor extends downward and penetrates the lower bearing; the output shaft can move straight down to connect with the pivoting member or the output shaft can move straight up to separate from the pivoting member .

Further, the torsion testing device further has a wire harness fixing seat; the wire harness fixing seat is arranged on the measuring seat and is located on the torsion axis, and the flexible coupling and the wire harness fixing seat are respectively located at the motor On opposite sides of the fixing frame along the extension direction of the torsion axis, at least one wire harness of the motor is fixed to the wire harness fixing seat.

Further, in the torsion testing device, the flexible coupling is a disc-type coupling.

Further, in the torsion testing device, the force sensor is formed with a measuring slot; the number of the at least one measuring surface is two, and the two measuring surfaces are respectively two opposite walls of the measuring slot; The outer end of the arm rod passes through the measurement slot and selectively abuts against one of the measurement surfaces.

Description of drawings

FIG. 1 is a three-dimensional appearance view of the utility model installed on a positioning mechanism.

FIG. 2 is a three-dimensional appearance view of the present invention installed on the positioning mechanism at another angle.

FIG. 3 is an exploded view of the components of the present invention.

FIG. 4 is an exploded view of the components of the present invention from another angle.

Figure 5 is a schematic cross-sectional view of the present invention.

FIG. 6 is a schematic cross-sectional view of the present invention at the section line A-A.

FIG. 7 is a perspective external view of the core element of the present invention.

8 and 9 are schematic side views of the present invention.

FIG. 10 is a perspective external view of a torque testing machine of the prior art.

Description of reference numerals

1: Torque test device

10: Measuring base

11: Bottom plate

12: Connector

13: Wire harness holder

14: Lower bearing

20: Force Sensor

21: Load cell

22: Extension block

221: Measuring slot

30: Motor module

31: Motor holder

311: Ring Department

312: Upper bearing

32: Boom

321: Outer end

33: Motor

331: Drive shaft

40: Flexible Coupling

41: The first fixing ring

42: Second fixing ring

50: output shaft

A: Pivot piece

A-A: Hatch line

L: torsion axis

M: positioning mechanism

91: Base

92: Measuring base

93: Rotary seat

94: Motor

95: Pivoting Pieces

951: Pedestal end

96: Extension jig.

Detailed ways

The technical means adopted by the present invention to achieve the intended purpose of the utility model are further described below in conjunction with the accompanying drawings and the preferred embodiments of the present invention.

Please refer to FIG. 1 , FIG. 2 and FIG. 9 , the torque testing device 1 of the present invention is used to test a pivoting member A. The pivoting member A is a finished or semi-finished product in an automated production line in this embodiment. The pivoting member A is driven by the conveying device (not shown in the figure) to pass under the torque testing device 1 one by one. The torsion testing device 1 is preferably installed at one end of a positioning mechanism M, and is driven by the positioning mechanism M to move up and down to connect or separate from the pivot member A.

Please refer to FIGS. 3 to 5 , the torque testing device 1 includes a measuring base 10 , a force sensor 20 , a motor module 30 , a flexible coupling 40 and an output shaft 50 ; and in this embodiment , and further includes a lower bearing 14 , an upper bearing 312 and a wire harness fixing seat 13 .

The aforementioned measuring base 10 is formed by assembling a plurality of flat plates in this embodiment, and the measuring base 10 is fixed on the positioning mechanism M of the production line, and the positioning mechanism M can drive the measuring base 10 to reciprocate up and down. In this embodiment, the measuring seat 10 has a bottom plate 11 and a connecting seat 12 arranged at intervals up and down. The aforementioned lower bearing 14 is disposed in a through hole of the bottom plate 11 , and the outer ring of the lower bearing 14 abuts the bottom plate 11 downward. (as shown in Figure 5).

Please refer to FIG. 4 , FIG. 6 and FIG. 7 , the aforementioned force sensor 20 is fixed on the measuring base 10 . In this embodiment, the force sensor 20 includes a load cell 21 and an extension block 22 . The extension block 22 is fixed on the sensing portion of the load cell 21, and a measurement slot 221 is formed. The two opposite walls of the measurement slot 221 are respectively a measurement surface. When an external force is applied to any measurement surface, the load cell 21 can measure The force component perpendicular to the measurement surface. The load cell 21 is a standard force sensor in the prior art, and its structure and principle are not repeated here. In other preferred embodiments, the load cell 21 can also be replaced by other forms of force sensors, such as piezoelectric pressure sensors.

Please refer to FIG. 4 , FIG. 5 and FIG. 7 , the aforementioned motor module 30 is disposed on the measuring base 10 and has a motor fixing frame 31 , an arm rod 32 and a motor 33 . The motor fixing frame 31 is rotatably provided on the measuring base with a torsion axis L as an axis, and specifically, the torsion axis L passes through the center of the aforementioned lower bearing 14 . Specifically, the motor fixing frame 31 is a rectangular frame for accommodating the motor 33 .

In this embodiment, a ring portion 311 protrudes from the bottom surface of the motor fixing frame 31 , and the ring portion 311 penetrates the lower bearing 14 and abuts the inner ring of the lower bearing 14 downward. The aforementioned upper bearing 312 is disposed in a through hole at the top of the motor fixing frame 31 , and the center of the upper bearing 312 is located on the torsion axis L. As shown in FIG. The connecting seat 12 of the measuring seat 10 is provided with an upper bearing 312 downward. In other words, the lower bearing 14 is arranged between the bottom of the motor fixing frame 31 and the measuring seat 10, and is located on the torsion axis L; the upper bearing 312 is arranged between the top of the motor fixing frame 31 and the measuring seat 10, and is located on the torsion axis L On the axis L; by arranging the lower bearing 14 and the upper bearing 312, the motor fixing frame 31 can smoothly rotate relative to the measuring base 10, and at the same time, the rotation axis of the motor fixing frame 31 can be prevented from easily deviating from the torsion axis L.

The arm rod 32 protrudes from one side of the motor holder 31 and extends radially of the torsion axis L. As shown in FIG. The outer end 321 of the arm rod 32 extends into the measuring slot 221 of the extension block 22 of the force sensor 20. When the motor fixing frame 31 is subjected to torsion force and wants to rotate relative to the measuring seat 10, the outer end 321 will abut against the force sensor according to the direction of the torsion force One of the measuring surfaces of the 20 to limit the motor fixing frame 31 from being unable to rotate relative to the measuring base 10 . That is to say, when the motor fixing frame 31 bears the torsion force that rotates with the torsion axis L as the axis, the outer end 321 of the arm rod 32 will abut against the measuring surface of the force sensor 20, so that the force sensor 20 measures the outer end of the arm rod 32. Abutting force: after multiplying the abutting force by the radial distance between the outer end 321 and the torsion axis L (ie, the moment arm), the torsion force borne by the motor fixing frame 31 can be obtained. In short, the measuring base 10 , the motor fixing frame 31 , the arm rod 32 and the force sensor 20 are combined together to form a torque sensor, which can measure the torsion force on the motor fixing frame 31 .

In other preferred embodiments, the force sensor 20 may also include only one load cell 21 . In this case, the measurement surface is the side of the load cell 21 for measuring the force, and the outer end 321 of the arm rod 32 directly abuts against the load cell 21 on the measuring surface, the same is also possible.

The motor 33 is fixed to the motor fixing frame 31 , and specifically, is fixed inside the motor fixing frame 31 . The driving shaft 331 of the motor 33 is aligned with the torsion axis L, and rotatably penetrates the bottom of the motor fixing frame 31 and the lower bearing 14 downwardly and protrudes downwardly from the bottom plate 11 of the measurement base 10 .

The aforementioned flexible coupling 40 is connected to the drive shaft 331 of the motor 33 and has a first fixing ring 41 and a second fixing ring 42 . The first fixing ring 41 is located at one end of the flexible coupling 40 and sleeves the drive shaft 331 of the motor 33 . The second fixing ring 42 is located at the other end of the flexible coupling 40 . Wherein, the center line of the second fixing ring 42 and the center line of the first fixing ring 41 can be non-parallel (that is, the flexible coupling 40 can absorb angular misalignment), or the center line of the second fixing ring 42 and the first fixing ring 41 can be non-parallel The centerlines of the fixed ring 41 can be parallel and offset (ie, the flexible coupling 40 can absorb eccentric offset). Specifically, the flexible coupling 40 is a disc-type coupling, that is, the flexible coupling 40 has a plurality of fixed rings arranged at intervals, and the fixed rings are connected by elastic steel sheets, so that the fixed rings are connected with each other. A slight displacement and swing can be generated between the two ends of the coupling, thereby absorbing the misalignment between the elements at both ends of the coupling.

Please refer to FIG. 4 , FIG. 8 and FIG. 9 , one end of the aforementioned output shaft 50 passes through the second fixing ring 42 of the flexible coupling 40 , and the other end is detachably connected to the pivot member A. In this embodiment, after the positioning mechanism M drives the torque testing device 1 to move straight down, the output shaft 50 can be connected to the pivot member A; and after the positioning mechanism M drives the torque testing device 1 to move straight up, it can make the output shaft 50 connect to the pivot member A. 50 is separated from the pivot member A, that is to say, the connection/disconnection between the output shaft 50 and the pivot member A can be achieved by a simple linear reciprocating motion, so that the present invention can be easily integrated into the existing automated production line And quickly measure the next pivot A of the production line.

The aforementioned wire harness fixing base 13 is provided on the measuring base 10 and is located on the torsion axis L, the flexible coupling 40 and the wire harness fixing base 13 are respectively located on opposite sides of the motor fixing frame 31 along the extension direction of the torsion axis L, and the motor 33 The two wire harnesses (power supply wire and coding wire) are fixed on the wire harness fixing seat 13 . Therefore, the pulling force generated by the wire harness of the motor 33 can be as close to the torsion axis L as possible, so that the torque generated by the pulling force can be reduced, thereby minimizing the torsional interference caused by the pulling of the wire harness.

The measuring seat 10 of the present invention is preferably arranged on the positioning mechanism M of the automated production line. When the pivoting member A of the production line moves below the positioning mechanism M, the positioning mechanism M drives the torsion testing device 1 to move toward the pivoting member A, and makes the output shaft 50 of the torque testing device 1 pass through and connect the pivoting member A (as shown in FIG. 9). Then, the motor 33 applies torsion force to the pivoting member A through the flexible coupling 40 and the output shaft 50, and the reaction force from the pivoting member A causes the motor fixing frame 31 to rotate in the opposite direction, and makes the outer side of the arm rod 32 rotate. The end 321 abuts against the force sensor 20 on the measuring base 10 , so that the torque applied by the motor 33 to the pivot member A (ie, the torsion force the pivot member A bears) can be calculated from the measurement value of the force sensor 20 .

To sum up, in the present invention, the force sensor 20 and the pivot member A are respectively disposed on the fixed end (ie the body of the motor 33 ) and the driving end (ie the drive shaft 331 of the motor 33 ) of the motor module 30 , so the measurement When the torsion of the pivot member A is to be measured, the torsion force can be measured as long as the output shaft 50 is connected to the pivot member A. At the same time, the connection/disconnection between the output shaft 50 and the pivoting member A can be achieved by simple mechanical actions, such as linear reciprocating motion, so the present invention can be easily integrated into the existing automated production line and quickly measure the production line The torsion characteristics of the pivoting part A can fully inspect the pivoting part A of the production line. In addition, the flexible coupling 40 can absorb the misalignment between the pivot member A and the drive shaft 331 of the motor 33, ensuring the accuracy of the torque measurement.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to equivalent examples of equivalent changes by using the technical content disclosed above, but all those that do not depart from the technical solution of the present invention Contents, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (6)

1. A torsion testing device for testing a pivoting member, the torsion testing device comprising:

a measuring seat;

a force sensor which is fixedly arranged on the measuring seat and is provided with at least one measuring surface; the force sensor can measure the force abutting against the at least one measuring surface;

a motor module, it locates this measurement seat, this motor module has:

a motor fixing frame which can be rotatablely arranged on the measuring seat by taking a torsion axis as an axis,

an arm rod protruding from one side of the motor fixing frame and extending toward the radial direction of the torsion axis; the outer end of the arm rod selectively abuts against the at least one measuring surface of the force sensor to limit the motor fixing frame from rotating relative to the measuring base;

a motor fixed on the motor fixing frame and having

A driving shaft aligned with the torsion axis and capable of rotatably penetrating through the motor fixing frame and the measuring seat;

a flexible coupling connected to the drive shaft of the motor and having;

a first fixing ring, which is located at one end of the flexible coupling and is sleeved on the driving shaft of the motor;

the second fixing ring is positioned at the other end of the flexible coupling;

the center line of the second fixing ring and the center line of the first fixing ring can be non-parallel, or the center line of the second fixing ring and the center line of the first fixing ring can be parallel and staggered;

one end of the output shaft penetrates through the second fixing ring of the flexible coupling, and the other end of the output shaft is used for being detachably connected with the pivoting piece.

2. The torsion testing device according to claim 1, having

A lower bearing which is arranged between the bottom of the motor fixing frame and the measuring seat and is positioned on the torsion axis so as to enable the motor fixing frame to rotate relative to the measuring seat;

and the upper bearing is arranged between the top of the motor fixing frame and the measuring seat and is positioned on the torsion axis so that the motor fixing frame can rotate relative to the measuring seat.

3. A torsion testing device according to claim 2, wherein the drive shaft of the motor extends downwardly and through the lower bearing; the torque force testing device can enable the output shaft to be connected with the pivoting piece after moving linearly downwards; the torque testing device can make the output shaft separate from the pivoting piece after moving linearly upwards.

4. The torsion testing device according to any one of claims 1 to 3, wherein a harness fixing seat is provided; the wire harness fixing seat is arranged on the measuring seat and is positioned on the torsion axis, the flexible coupling and the wire harness fixing seat are respectively positioned on two opposite sides of the motor fixing frame along the extension direction of the torsion axis, and at least one wire harness of the motor is fixed on the wire harness fixing seat.

5. A torsion testing device according to any of claims 1 to 3, wherein the flexible coupling is a disc type coupling.

6. The torsion testing device according to any one of claims 1 to 3,

the force sensor is provided with a measuring groove; the number of the at least one measuring surface is two, and the two measuring surfaces are two opposite groove walls of the measuring groove respectively;

the outer end of the arm rod of the motor module penetrates through the measuring groove and selectively abuts against one of the measuring surfaces.

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