CN212379232U

CN212379232U - Fretting friction wear testing machine

Info

Publication number: CN212379232U
Application number: CN202021513130.2U
Authority: CN
Inventors: 徐志彪; 黄正宇; 王耀程; 刘吉华; 李永健; 何成刚; 李鹏; 李志伟
Original assignee: Wuyi University
Current assignee: Wuyi University
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-01-19
Anticipated expiration: 2030-07-28

Abstract

The utility model provides a fretting friction wear testing machine, which comprises a frame, a driving mechanism and a loading mechanism, wherein the driving mechanism and the loading mechanism are arranged on the frame and are matched to realize a friction test; the loading mechanism comprises a support, a lead screw sliding seat, a three-dimensional force sensor and a sample ball clamp. The utility model has simple structure, and the slide mechanism is driven by the voice coil motor to slide left and right, thereby realizing the left and right slide of the sample plate and the water tank; the voice coil motor is used as a power source, and the sliding block and the linear sliding rail are used as sliding components, so that the structural complexity is further reduced; the utility model fixes the position of the lead screw through the fixed beam and loads the force in the vertical direction on the sample through rotating the lead screw; the utility model discloses set up the lead screw slide to guarantee the stability that the lead screw reciprocated, guarantee the power of lead screw loading on the sample on the vertical direction.

Description

Fretting friction wear testing machine

Technical Field

The utility model belongs to the technical field of the testing machine technique and specifically relates to a fine motion friction wear testing machine.

Background

At present, most of devices adopted in friction and wear tests adopt ball-disc type or pin-disc type friction testing machines, and taking the pin-disc type friction testing machine as an example, the traditional pin-disc type friction testing machine rotates a disc and does not move the pin during working.

For example, chinese patent document CN103308409A discloses a rotating disc type multi-sample synchronous friction and wear test device, which includes a driving device for outputting torque, a friction disc fixed on the output end of the driving device, a grinding head eccentrically disposed above the friction disc, and a Z-direction loading device assembled on the grinding head, wherein the friction disc is composed of a disc body and a test piece fixed thereon, so that the disc body of the friction disc is used as a movable seat for mounting the test piece, and the corresponding grinding head is used as a reference member for testing.

During the test, drive the sample piece revolution through drive arrangement, Z can compress tightly the bistrique on the sample piece to the loading device simultaneously, along with the rotation of friction disc, the bistrique constantly rubs on the surface of friction disc, connect the frictional force data between friction disc and the bistrique in the test procedure by the sampling on the loading device of Z again, gather the real-time current data in the test procedure through pasting resistance card and friction disc and the power and the signal acquisition circuit who is connected on the friction disc of establishing on the friction disc and friction disc, and with frictional force data and current data transmission to the computer, calculate the coefficient of friction disc by the computer.

Disclosure of Invention

Not enough to prior art, the utility model provides a fine motion friction wear test machine.

The technical scheme of the utility model is that: a fretting friction wear testing machine comprises a rack, a driving mechanism and a loading mechanism, wherein the driving mechanism and the loading mechanism are arranged on the rack, and the driving mechanism and the loading mechanism are matched to realize a friction test.

Preferably, actuating mechanism include the base plate and set up voice coil motor, the lateral sliding subassembly on the base plate, the base plate install in the frame, the voice coil motor pass through motor coupling rod and be connected with the lateral sliding subassembly, the lateral sliding subassembly on be provided with the sample mounting panel, the sample mounting panel on be provided with the basin.

Preferably, the voice coil motor is arranged on the substrate through a motor mounting plate.

Preferably, the transverse sliding assembly comprises a linear sliding rail, a linear sliding rail mounting seat and a driving connecting frame, the linear sliding rail mounting seat is arranged on the substrate, two linear sliding rails are arranged on the linear sliding rail mounting seat in parallel, and the driving connecting frame is arranged on the linear sliding rails through corresponding sliding blocks.

Preferably, the sample mounting plate is provided on the driving connection frame.

Preferably, the voice coil motor is connected with the driving connecting frame through a motor connecting rod, and the voice coil motor transversely moves through the driving motor connecting rod, so that the driving connecting frame, the sample mounting plate and the water tank are controlled to move left and right.

Preferably, the loading mechanism comprises a bracket and a lead screw, the bracket is arranged on the base plate, the lead screw is arranged on the bracket through a fixed cross beam, and the lead screw can move up and down on the fixed cross beam through a lead screw nut; the lower end of the lead screw penetrates through the lead screw sliding seat and is connected with the sensor connecting piece, the lower end of the sensor connecting piece is provided with a three-dimensional force sensor, and the lower end of the three-dimensional force sensor is provided with a sample ball clamp.

Preferably, the screw is fixed on the screw sliding seat through a screw fixing nut, and the screw sliding seat is connected with a guide rail arranged on the bracket.

Preferably, a connecting disc is further arranged between the sensor connecting piece and the screw sliding seat, the connecting disc is fixed on the screw sliding seat through a fixing bolt, and the sensor connecting piece is fixed on the connecting disc through a fixing bolt.

Preferably, a sensor connecting disc is further arranged between the lower end of the three-dimensional force sensor and the sample ball clamp, and the sample ball clamp is inserted into the sensor connecting disc and locked through a locking nut.

Preferably, the upper end of the screw rod is further provided with a handle, the screw rod is rotated through the handle, and the screw rod moves up and down on the fixed cross beam through a screw rod nut, so that the screw rod sliding seat is driven to move up and down on the guide rail, and the sample ball clamp is driven to move up and down.

The utility model has the advantages that:

1. the utility model has simple structure, and the slide mechanism is driven by the voice coil motor to slide left and right, thereby realizing the left and right slide of the sample plate and the water tank;

2. the utility model adopts the voice coil motor as the power source, and the slide block and the linear slide rail as the slide assembly, thereby further reducing the complexity of the structure;

3. the utility model fixes the position of the lead screw through the fixed beam and loads the force in the vertical direction on the sample through rotating the lead screw;

4. the utility model discloses set up the lead screw slide to guarantee the stability that the lead screw reciprocated, guarantee the power of lead screw loading on the sample on the vertical direction.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the driving mechanism of the present invention;

fig. 3 is a schematic structural diagram of the loading mechanism of the present invention;

in the figure, 1-a rack, 2-a base plate, 3-a voice coil motor, 4-a motor mounting plate, 5-a motor connecting rod, 6-a linear slide rail mounting seat, 7-a driving connecting frame, 8-a linear slide rail, 9-a slide block, 10-a sample mounting plate and 11-a water tank;

12-bracket, 13-screw rod, 14-fixed beam, 15-screw rod nut, 16-screw rod slide carriage, 17-connecting disc, 18-sensor connecting piece, 19-guide rail, 20-sensor connecting disc, 21-sample ball clamp, 22-handle and 23-three-dimensional force sensor.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

as shown in figure 1, the fretting friction wear testing machine comprises a machine frame 1, a driving mechanism and a loading mechanism, wherein the driving mechanism is arranged on the machine frame 1, and the driving mechanism is matched with the loading mechanism to realize a friction test. In this embodiment, the lower end of the frame is provided with a support leg.

Preferably, as shown in fig. 2, the driving mechanism includes a substrate 2, a voice coil motor 3 disposed on the substrate 2, and a lateral sliding assembly, wherein the substrate 2 is mounted on the frame 1, and the voice coil motor 3 is disposed on the substrate 2 through a motor mounting plate 4. The voice coil motor 3 is connected with the transverse sliding assembly through a motor connecting rod 5, a sample mounting plate 10 is arranged on the transverse sliding assembly, and a water tank 11 is arranged on the sample mounting plate 10.

Preferably, the lateral sliding component of this embodiment includes linear slide rail 8, linear slide rail mount pad 6, drive connection frame 7, linear slide rail mount pad 6 set up on base plate 1, linear slide rail mount pad 6 on parallel arrangement have two linear slide rails 8, drive connection frame 7 through corresponding slider 9 setting on linear slide rail 8. The sample mounting plate 10 is provided on the drive connection frame 7. The voice coil motor 3 is connected with the driving connecting frame 7 through the motor connecting rod 5, and the voice coil motor 3 transversely moves through the driving motor connecting rod 5, so that the driving connecting frame 7, the sample mounting plate 10 and the water tank 11 are controlled to move left and right.

Preferably, as shown in fig. 3, the loading mechanism includes a support 12 and a lead screw 13, in this embodiment, the support 12 is composed of two symmetrically arranged supports, and the two supports are arranged on the substrate 2. The fixed cross beam 14 is arranged at the upper end of the two supports. The lead screw 13 is arranged on the bracket 12 through a fixed cross beam 14, and in the embodiment, the lead screw 13 can move up and down on the fixed cross beam 14 through a lead screw nut 15.

The lower end of the lead screw 13 extends downwards through the lead screw sliding seat 16 and is connected with the connecting disc 17, the connecting disc 17 is fixed on the lead screw sliding seat 16 through a fixing bolt, the lead screw sliding seat 16 is connected with a guide rail 19 arranged on the bracket 12, and the lead screw 13 is fixed on the lead screw sliding seat 16 through a lead screw fixing nut.

Preferably, the lower end of the coupling disk 17 is provided with a sensor connecting piece 18, and the sensor connecting piece 18 is fixed on the coupling disk 17 through a fixing bolt. The lower end of the sensor connecting piece 18 is provided with a three-dimensional force sensor 23, the lower end of the three-dimensional force sensor 23 is provided with a sample ball clamp 21, and a sample ball is installed in the sample ball clamp 21.

Preferably, a sensor connecting disc 20 is further arranged between the three-dimensional force sensor 23 and the sample ball clamp 21, and the upper end of the sample ball clamp 21 is inserted into the sensor connecting disc 20 and locked by a locking nut.

Preferably, a handle 22 is further disposed at the upper end of the screw 13, the screw 13 is rotated by the handle 22, and the screw 13 moves up and down on the fixed cross beam 14 through the screw nut 15, so as to drive the screw slide 16 to move up and down on the guide rail 19, and thus drive the sample ball clamp 21 to move up and down. This embodiment applies a force in the vertical direction to the sample by rotating the lead screw 13.

The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims

1. A fretting friction wear testing machine which is characterized in that: the friction test device comprises a rack, a driving mechanism and a loading mechanism, wherein the driving mechanism and the loading mechanism are arranged on the rack, and the driving mechanism is matched with the loading mechanism to realize a friction test;

the driving mechanism comprises a substrate, a voice coil motor and a transverse sliding assembly, wherein the voice coil motor and the transverse sliding assembly are arranged on the substrate;

the loading mechanism comprises a bracket and a lead screw, the bracket is arranged on the base plate, the lead screw is arranged on the bracket through a fixed cross beam, and the lead screw can move up and down on the fixed cross beam through a lead screw nut;

the lower end of the lead screw penetrates through the lead screw sliding seat and is connected with the sensor connecting piece, the lower end of the sensor connecting piece is provided with a three-dimensional force sensor, and the lower end of the three-dimensional force sensor is provided with a sample ball clamp.

2. The fretting wear tester according to claim 1, wherein: the voice coil motor is arranged on the substrate through the motor mounting plate, and the substrate is mounted on the rack.

3. The fretting wear tester according to claim 1, wherein: the transverse sliding assembly comprises linear sliding rails, a linear sliding rail mounting seat and a driving connecting frame, the linear sliding rail mounting seat is arranged on the base plate, the linear sliding rail mounting seat is provided with two linear sliding rails in parallel, and the driving connecting frame is arranged on the linear sliding rails through corresponding sliding blocks.

4. The fretting wear tester according to claim 1, wherein: the sample mounting plate is arranged on the driving connecting frame.

5. The fretting wear tester according to claim 4, wherein: the driving connection frame is connected with the voice coil motor through a motor connection rod, and the voice coil motor drives the sample mounting plate and the water tank to move left and right through the motor connection rod.

6. The fretting wear tester according to claim 1, wherein: the lead screw is fixed on the lead screw sliding seat through a lead screw fixing nut.

7. The fretting wear tester according to claim 6, wherein: the lead screw sliding seat is connected with a guide rail arranged on the bracket.

8. The fretting wear tester according to claim 1, wherein: a connecting disc is also arranged between the sensor connecting piece and the lead screw sliding seat;

the connecting disc is fixed on the lead screw sliding seat through a fixing bolt;

the sensor connecting piece is fixed on the connecting disc through a fixing bolt.

9. The fretting wear tester according to claim 1, wherein: a sensor connecting disc is also arranged between the lower end of the three-dimensional force sensor and the sample ball clamp;

and the sample ball clamp is inserted into the sensor connecting disc and is locked by a locking nut.

10. The fretting wear tester according to claim 1, wherein: the upper end of the screw rod is also provided with a handle for rotating the screw rod.