TWI484176B - Automatic scuffing wear tester and its operation method - Google Patents

Description

Automatic scraping abrasion testing machine and operating method thereof

The present invention relates to a machine for use in an abrasion test, and more particularly to an automatic scraping and abrasion tester that can uniformly grind a test bar through a driving device.

According to wear, wear is a common type of mechanical damage, mainly occurs when two mechanical components are in contact with each other and move relative to each other under a load, through special mechanisms such as: adhesion mechanism, scratch mechanism and surface fatigue damage mechanism. The damage caused by the surface, including the change of the surface morphology and the weight loss, the continuous damage of the surface can also reduce the cross-sectional area of the material to the extent that it can no longer withstand its safe load. Even breaks, and when surface damage occurs as cracks or partial grooves, it is more likely to cause rapid breakage of the mechanism due to stress concentration. The damage to the engineering can be divided into direct and indirect. The direct damage includes: the surface vibration causes the bad vibration of the machine, the reduction of the force area makes the material unable to bear the load and breaks, the size changes make the machine unable to Close contact and even loosening problems, heat loss can reduce the strength of the material, surface scratches damage the aesthetics of the material, etc. Indirect damage includes: personnel damage caused by wear caused by wear, loss of machining accuracy due to tool wear, and wear of electrical contacts Bad communication or interruption of circuit connection, noise and mechanical damage caused by bad vibration, replacement of wear parts caused by production line shutdown, etc.; specific statistics, the annual loss caused by wear in the United States is about 80 billion US dollars (accounting for The gross domestic product is about 7%), Germany is about 8 billion US dollars (about 1% of its gross national product), and the United Kingdom is about 4 billion US dollars (about 2% of its gross national product). Therefore, wear has been in many industries. The material problems that are valued in the middle and deep, some surface treatment techniques to improve the wear resistance of materials have been proposed, and most of them have been widely used in the industry.

However, in order to understand the mechanical properties of the material, an abrasion test is required, but the conventional abrasion tester has the following problems:

1. Uneven wear of the test bar: a conventional wear tester, after the test bar is clamped (or the user holds the test bar), the test piece is manually displaced before and after the scratch wear test, however, The artificial method will cause the test rod to wear unevenly, which will cause problems such as test data errors.

2. It is not easy to set up the test bar: when the scraping and abrasion test is carried out, the test bar needs to be fixed to the jig, and the test bar needs to be perpendicular to the abrasive belt of the abrasion tester. However, the jig of the conventional wear tester is as follows. (Fig. 1) The fixed ring mechanism shown in Fig. 1 is not uniform when the force is locked, which will cause the angle of the test bar to shift. If the test is performed by the tester with the offset angle, the data will be wrong. The situation happened.

3. It is impossible to automatically record the friction: When performing the scraping and abrasion test, it is necessary to pay attention to whether the material rod has a viscous effect with the abrasive cloth of the abrasion testing machine, and when the viscous effect occurs, the test rod and the abrasive cloth are in a certain time. The internal viscosity is not moving, and the wrong test data is generated; in addition, when the scraping abrasion test is performed, The friction between the test bar and the grinding wheel is quite important for the results of the test. The conventional wear tester uses a pressure gauge to wear the test bar and the grinding wheel. However, whether it is a test bar or a grinding Abrasive cloth can cause wear and tear, but the pressure gauge can't immediately feedback the information to the user through the conventional pressure gauge, which causes the experimental data to be wrong, and the user does not know whether the viscous effect is caused or the experimental data is wrong.

It can be seen that there are still many shortcomings in the above-mentioned household items, which is not a good designer and needs to be improved.

In view of the shortcomings derived from the above-mentioned conventional abrasion testing machine, the inventor of the present invention has improved and innovated, and after years of painstaking research, finally successfully developed and completed the automatic scraping and abrasion testing machine.

The object of the present invention is to provide an automatic to wear and tear testing machine, which is provided with a driving mechanism on the testing platform, and the test bar can be evenly worn by the grinding wheel by the driving mechanism.

A second object of the present invention is to provide an automatic scraping and abrasion testing machine that facilitates the installation of a test bar by means of a limited-diameter bearing-assisted test bar.

Another object of the present invention is to provide an automatic scraping abrasion testing machine which is further connected with a friction force measuring component, and can instantly set and feedback friction force and record on the human machine interface.

An automatic scraping and abrasion testing machine capable of achieving the above object of the invention includes: a test stick group mainly comprises a test bar, a collet for holding the test bar, and an extended shaft that is locked with the collet; a body comprising a grinding wheel for providing the test bar wear and a fixed platform provided by the driving mechanism A driving mechanism comprises a two-group slide rail disposed on the fixed platform, a servo motor that moves forward and backward of the guide seat of the movable fixture, and one end of which is connected to the other end of the fixture guide seat and is connected with the servo motor to provide a transmission. a guiding screw, which is disposed on the sliding rail of the driving mechanism, and provides a mechanism for clamping and locking the test bar group, and includes a guiding seat for providing movement of the jig and the front and rear, and the upper end of the jig has A finite-diameter bearing with a positive test bar angle makes the test rod installation easier; a friction force measuring component is a pressure sensor, one end of which is connected to the jig of the aforementioned clamping test bar, and the lower part is fixed at The other end is connected to the memory module of the control unit to provide friction data recording and output; a control unit is provided for controlling the body and the driving mechanism, and one end of the control unit is electrically connected to the driving mechanism. The control drive mechanism can advance, retreat and feed speed, the control unit can control the starting or closing of the body, and the rotation speed of the body, and the other end is connected to the human machine interface. The control unit has a built-in memory module for providing friction data. The data such as the body speed is recorded or output.

Thereby, the test rod group is mounted on the jig, and the driving mechanism enables the jig to slide on the slide rail, and the drive mechanism is automatically controlled by the control unit on the slide rail. Advancing or retreating, and the friction force measuring component instantaneously measures the frictional force data, and the control unit transmits the data to the human-machine interface to achieve the effect of the automatic scraping abrasion testing machine.

Referring to FIG. 1 to FIG. 4 , the automatic scraping and abrasion testing machine provided by the present invention mainly comprises: a test rod group 1 , a body 2 , a driving mechanism 3 , a jig 4 , and a friction force measuring component 5 . And a control unit 6 is constructed.

The test rod group 1 mainly comprises a test rod 11, a collet 12 for holding the test rod group 1, and an extension shaft 14 for locking with the collet 12; further, the test rod 11 includes/without The surface of the test bar 11 is subjected to a scraping abrasion test on the test bar 11, and the mechanical properties of the material such as adhesion, thermal conductivity, hardness and strength, and surface roughness of the test bar 11 can be obtained, and the test bar 11 can be obtained. Mechanical characteristics; referring to FIG. 3, the collet 12 is integrally formed, and a receiving hole 121 is recessed from the bottom edge, and the test rod 11 is received in the collet 12, and the collet 12 is included. The locking nut 13 of the locking test bar 11 is provided with the inner hole being coaxially and without the eccentric hole, and the top edge of the collet 12 is concavely provided with a groove 122 for being combined with the extension. On the shaft 14, the extension shaft 14 has an engaging end 141 corresponding to the groove of the collet 12, and the collet 12 can be joined to the extension shaft 14 by means of a thread, a snap, or the like, and the extension shaft 14 is at the top. About one third of the edge is sleeved with a jacket ring 141 for the test rod set 1 to be mounted on the jig 4.

The body 2 mainly comprises a grinding wheel 21 for providing the test rod 11 to wear and a fixed platform 22 provided by the driving mechanism 3. Further, the body 2 is a scraping and abrasion testing machine, mainly for piercing the peak end of the hard solid surface. a soft solid surface, an abrasion tester that separates the soft material from the wear-receiving interaction motion; generally, the above-mentioned hard solid, that is, the grinding wheel 21 provided on the body 2, achieves the purpose of abrasion by means of rotation, and the soft solid That is, the test rod 11; the upper end of the grinding wheel 21 is coated with any material such as silicon carbide, garnet, alumina, tantalum carbide, zirconia, diamond or ceramic alumina, and the grinding wheel 21 is used by the abrasion testing machine. After the motor (not shown) is rotated, the test bar 11 is subjected to an abrasion test.

The driving mechanism 3 includes a pair of slide rails 31 and a slider 34 disposed on the fixed platform 22, a servo motor 32 for moving the guide seat 41 of the fixture 4 forward and backward, and one end of the guide motor 4 The other end of the lead seat 41 is coupled with the servo motor 32 to provide a lead screw 33 for driving. Further, the slide rail 31 is spanned on the fixed platform 22 of the body 2, and the sliding rail 31 is fixed to the body 2 by the locking member. The platform 22 is disposed on the slide rail 31, and one end of the slider 34 is provided with a servo motor 32 for driving the guide seat 41 of the jig 4 to move back and forth, and is driven by the lead screw 33 to make the fixture The guide seat 41 of 4 slides on the slide rail 31.

Referring to FIG. 2 and FIG. 4 , the fixture 4 is disposed on the slider 34 of the driving mechanism 3 , and provides a mechanism for clamping and locking the test rod group 1 , including A guide seat 41 for moving the jig 4 forward and backward, and a diameter-restricting bearing 42 having an angle of the positive test rod group 1 at the upper end of the jig 4 makes the installation of the test rod group 1 easier, and further, the upper end of the jig 4 The utility model has a set of diameter-restricting bearings 42. When the test rod group 1 is placed by the upper end of the jig 4, the limiting-diameter bearing 42 has a plurality of adjusting members 421 (rollers or balls) for slowing the test rod group 1 Lowering, the test stick group 1 is kept in a vertical state through the adjusting member 421, the user can lock the test stick group 1 through the lock member, and the user installs the test stick group 1 in the easiest installation manner; The problem of the size of the stick 11 is different. The jig 4 further comprises a weight 15 of different weights. When the test stick 11 of the test stick group 1 is light in weight, the weight 15 can be sleeved on the extension shaft. On the outer collar 141, the lowering speed of the test stick set 1 is increased (i.e., the test stick set 1 passes through the reduced diameter bearing 42 more quickly).

Referring to FIG. 2, FIG. 4 and FIG. 5, the friction force measuring assembly 5 is a pressure sensor, one end of which is connected to the jig 4 of the clamping test rod group 1, and the lower part is fixed to the body 2. The other end is connected to the memory module 61 of the control unit 6, providing friction data recording and output; further, the friction force measuring component 5 is mainly used to adjust the grinding wheel 21 of the machine according to the needs of the user. The friction force between the test bars 11; the friction force measuring component 5 is a pressure sensor that can immediately feedback the signal to the control unit 6 to determine whether a viscous effect occurs between the grinding wheel 21 and the test bar 11, and further friction force measurement The component 5 is connected to the memory module 61 of the control unit 6, and can instantly record or output relevant data, so as to avoid the use of the manual recording method to record data data.

The control unit 6 is provided with a control body 2 and a driving mechanism 3. One end of the control unit 6 is electrically connected to the driving mechanism 3, and the driving mechanism 3 can be controlled to advance, retreat and feed speed, and the control unit 6 can control the starting of the body 2. Or the body 2 is rotated, and the other end is connected to the human machine interface 7. The control unit 6 has a built-in memory module 61 for providing data recording or output for friction data and the speed of the body 2.

Thereby, the test rod set 1 is mounted on the jig 4, and the drive mechanism 3 allows the jig 4 to slide on the slide rail 31, and the drive unit 3 is automatically operated to advance or retreat on the slide rail 31 by the control unit 6. And the friction force measuring component 5 instantaneously measures the frictional force data, and the data is transmitted by the control unit 6 to the human-machine interface 7 to achieve the effect of the automatic scraping abrasion testing machine.

Please refer to FIG. 6 , which is a description of the components of the automatic scraping and abrasion testing machine of the preferred embodiment of the present invention and the assembly manner thereof, and then the following features of the present invention are as follows:

Step 1: The user inserts the test bar 11 to be subjected to the scraping abrasion test into the collet 12 of the test bar group 1, and locks the lock nut 13 to the collet 12 to fix the test bar 11 to the collet In 12, the groove of the top edge of the collet 12 is aligned with the engaging end of the extension shaft 14, and the collet 12 is engaged with the extension shaft 14 through the thread.

Step 2: The limited diameter bearing 42 through which the test rod group 1 is passed is mounted on the guide seat 41 of the jig 4, and further, the collar 141 can be placed on the sleeve 141 outside the extension shaft 14 to increase the weight of the test rod group 1 Speed.

Step 3: One end of the friction force measuring component 5 is pre-connected to the memory module 61 of the control unit 6, and the user only needs to connect the other end of the frictional force measuring component 5 to the jig 4 and the body 2.

Step 4: Start the rotation of the body 2 through the control unit 6, and set the rotation speed of the body 2, the direction of the drive mechanism 3, and the feed speed to perform the scraping abrasion test. In order to make the test data accurate, pre-grinding is required to make the bottom edge of the test bar 11 flat. .

Step 5: During the test, the control unit 6 collects the friction data, the speed of the body 2 and other related data. When the test is finished, the output data is processed and analyzed by the human-machine interface 7 for the user to read the test machine. nature.

Thus, the combination of various mechanisms satisfies the need for the evaluation of the friction and wear properties of the material, and the automatic scraping abrasion tester of the present invention is applied, and the driving mechanism 3 automatically drives the lower jig 4 to enable the test bar 11 to be scraped in a more even and uniform manner. The abrasion test can deeply study the wear behavior of the test rod 11, save the cost of the test, especially reduce the workload of manual operation and recording, shorten the development cycle, and improve the technical and economic benefits.

The automatic scraping and abrasion testing machine provided by the invention has the following advantages when compared with other conventional techniques:

1. The test bar can be evenly worn by the abrasive cloth under the driving mechanism.

2. The limit rod bearing 42 is used to assist the clamping of the test rod group, which makes the installation of the test rod group easier.

3. The drive mechanism is further connected with the friction force measuring component, and the friction force can be set and feedback instantly, and recorded on the man-machine interface 7 can save manpower on the recording workload.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

In summary, this case is not only innovative in terms of space type, but also can enhance the above-mentioned multiple functions compared with the customary items. It should fully meet the statutory invention patent requirements of novelty and progressiveness, and apply for it according to law. This invention patent application, in order to invent invention, to the sense of virtue.

1‧‧‧Test bar group

11‧‧‧Test bars

12‧‧‧ Collet

121‧‧‧ accommodating holes

122‧‧‧ Groove

13‧‧‧Lock nut

14‧‧‧Extension shaft

141‧‧‧coat ring

15‧‧‧weights

2‧‧‧ body

21‧‧‧ Grinding wheel

22‧‧‧Fixed platform

3‧‧‧ drive mechanism

31‧‧‧Slide rails

32‧‧‧Servo motor

33‧‧‧ lead screw

34‧‧‧ Slider

4‧‧‧ fixture

41‧‧‧ Guide seat

42‧‧‧Restricted bearings

421‧‧‧Adjustment

5‧‧‧ friction force measuring component

6‧‧‧Control unit

61‧‧‧Memory Module

7‧‧‧Human Machine Interface

1 is a perspective assembled view of the automatic scraping abrasion testing machine of the present invention; FIG. 2 is a perspective exploded view of the automatic scraping abrasion testing machine; FIG. 3 is a schematic view of the mounting test bar of the automatic scraping abrasion testing machine; FIG. 5 is a schematic diagram of the connection of the automatic scraping abrasion testing machine, the control unit and the memory module; and FIG. 6 is a schematic diagram of the use steps of the automatic scraping abrasion testing machine.

1‧‧‧Test bar group

15‧‧‧weights

2‧‧‧ body

21‧‧‧ Grinding wheel

22‧‧‧Fixed platform

3‧‧‧ drive mechanism

31‧‧‧Slide rails

32‧‧‧Servo motor

33‧‧‧ lead screw

34‧‧‧ Slider

4‧‧‧ fixture

41‧‧‧ Guide seat

5‧‧‧ friction force measuring component

Claims (9)

An automatic scraping abrasion testing machine comprises: a test stick set, which mainly comprises a test stick, a collet for holding the test stick set, and an extension shaft that is locked with the collet; a body mainly includes a test a rod-wearing grinding wheel and a fixed platform provided by the driving mechanism; a driving mechanism comprising a set of sliding rails and a slider disposed on the fixed platform, a servo motor for moving the guiding seat of the fixture to move forward and backward, and one end wearing The other end of the fixture guiding seat is connected with the servo motor to provide a driving lead screw; a jig is disposed on the sliding block of the driving mechanism, and provides a mechanism for clamping and locking the test rod group, including one provided The guiding seat for moving the tool before and after the fixture, and the diameter-limiting bearing with a guiding rod group angle at the upper end of the fixture make the test rod group easier to install; a friction force measuring component is a pressure sensor, one end of which is a pressure sensor Connected to the fixture of the aforementioned clamping tester group, the lower part is fixed on the body, and the other end is connected to the memory module of the control unit to provide friction data recording and output; a control unit is provided for the control machine And a driving mechanism, and one end of the control unit is electrically connected to the drive mechanism, the drive mechanism controls forward and reverse feed speed, the control unit may activate or deactivate the control body, and The body speed is connected to the human-machine interface. The control unit has a built-in memory module that provides data recording or output for friction data and body speed. The automatic scraping abrasion testing machine according to claim 1 , wherein the test rod group is mounted on the jig, the driving mechanism enables the jig to slide on the sliding rail, and the driving mechanism is controlled by the control unit The rail automatically advances or retreats, and the friction force measuring component instantaneously measures the frictional force data, and the control unit transmits the data to the human-machine interface to achieve the effect of automatically scraping the abrasion testing machine. The automatic scraping abrasion testing machine according to claim 1 , wherein the grinding wheel is coated with any material such as silicon carbide, garnet, alumina, tantalum carbide, zirconia, diamond or ceramic alumina at the upper end thereof. On it. The automatic scraping abrasion testing machine according to claim 1 , wherein the limiting bearing has a plurality of adjusting members for maintaining the test bar in a vertical state. The automatic scraping and abrasion testing machine according to claim 1 , wherein the collet is integrally formed, and a receiving hole is recessed from the bottom edge, and the test rod is received in the collet, and the A recess is formed in the top edge of the collet for being combined with the extension shaft. The automatic scraping abrasion testing machine according to claim 1 , wherein the collet further comprises a locking nut for locking the test bar, wherein the locking nut is provided with the inner hole coaxially and without The design of the eccentric hole. The automatic scraping abrasion testing machine according to claim 1 , wherein the extending shaft has a joint end corresponding to the groove of the collet, and the extending shaft is set at about one third of the top edge. There is a jacket ring for the test rod set to be mounted on the fixture. The automatic scraping abrasion testing machine according to claim 1 , wherein the jig further comprises a weighting block having different weights, and when the bar of the test bar group is lighter in weight, the weighting block can be set. It is placed on the outer sleeve of the extension shaft to increase the speed of the test rod group. An operation method of the automatic to wear and tear tester comprises: Step 1: The user puts the test bar to be subjected to the scraping abrasion test into the collet of the test stick group, and locks the lock nut to the collet Fixing the test rod in the collet, aligning the groove of the top edge of the collet with the joint end of the extension shaft, and threading the collet to the extension shaft through the thread; Step 2: Passing the limit rod bearing through the test rod group Installed on the guide seat of the jig, in addition, the weight of the test piece group can be increased by the weight on the collar sleeve outside the extension shaft; Step 3: one end of the friction force measurement component is pre-connected to the control unit In the memory module, the user only needs to connect the other end of the friction force measuring component to the jig and the body; Step 4: Start the body rotation through the control unit, and set the body speed, The direction of the drive mechanism and the feed speed are tested for scraping and abrasion. In order to make the test data accurate, pre-grinding is required to level the bottom edge of the test bar. Step 5: During the test, the control unit collects friction data, body speed and other related data. Data, when the test is over, the output data is processed and analyzed by the human-machine interface to provide data for the user to interpret the mechanical properties of the test bar.