CN217688225U - Scraping experimental device - Google Patents

Abstract

The utility model discloses a scraping experimental apparatus, including base, actuating mechanism, work piece holder and scraping subassembly. The driving mechanism is arranged on the base; the workpiece clamp comprises a mounting plate and two clamping plates, the mounting plate is arranged on the driving mechanism and is driven by the driving mechanism to slide, and the two clamping plates are connected to the mounting plate and can approach each other to clamp and fix a workpiece to be detected; the scraping component comprises a fixing frame, a scraping rod and a balancing weight, the fixing frame is arranged on the base, the scraping rod is arranged on the fixing frame in a liftable mode and is located above the workpiece fixture, the lower end of the scraping rod is provided with a scraping head, the balancing weight is movably connected with the scraping rod, the scraping rod is under the action of the balancing weight, and the scraping head is abutted to and pressed on a workpiece to be tested in the workpiece fixture. The utility model discloses technical scheme has improved the suitability of scraping experimental apparatus in the scraping experiment.

Description

Scraping experimental device

Technical Field

The utility model relates to a scraping test technical field, in particular to scraping experimental apparatus.

Background

At present, after a plurality of workpieces are machined and formed, a scratch-resistant experiment needs to be carried out on the surfaces of the workpieces through a scratch experimental device so as to detect the scratch resistance of the workpieces. However, the scraping test apparatus in the related art cannot fix workpieces with different sizes, and cannot adjust the scraping force applied to the workpiece, which affects the applicability of the scraping test apparatus in the scraping test.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a scraping experimental apparatus aims at improving the suitability of scraping experimental apparatus in the scraping experiment.

In order to achieve the above object, the utility model provides a scraping experimental apparatus includes:

a base;

the driving mechanism is arranged on the base;

the workpiece clamp comprises a mounting plate and two clamping plates, the mounting plate is arranged on the driving mechanism and is driven by the driving mechanism to slide, and the two clamping plates are connected to the mounting plate and can approach each other to clamp and fix a workpiece to be tested; and

the scraping assembly comprises a fixing frame, a scraping rod and a balancing weight, the fixing frame is arranged on the base, the scraping rod is arranged on the fixing frame in a liftable mode and is located above the workpiece fixture, the lower end of the scraping rod is provided with a scraping head, the balancing weight is movably connected with the scraping rod, the scraping head is pressed against a workpiece to be tested in the workpiece fixture under the action of the balancing weight.

Optionally, the mount has been seted up through-going hole, the scraping pole includes:

the lower section body is arranged in the penetrating hole in a penetrating way in a liftable way, the upper end and the lower end of the lower section body both penetrate out of the penetrating hole to the outside, and the scraping head is arranged at the lower end of the lower section body; and

the upper segment body, the upper segment body connect in the upper end of the lower segment body, just the upper segment body projected area on the horizontal plane is less than the projected area of the lower segment body on the horizontal plane, the balancing weight is equipped with the mounting hole, and passes through the mounting hole cover is located the upper segment body.

Optionally, the lateral circumferential surface of the counterweight block is provided with an installation notch communicated with the installation hole, so that the upper segment body enters the installation hole through the installation notch.

Optionally, the upper end of the scraping head is inserted into the lower section body and is in threaded connection with the lower section body.

Optionally, the projection of the lower section body on the horizontal plane is square, and the through hole is matched with the shape of the lower section body.

Optionally, the workpiece fixture further comprises two fixing plates and two threaded rods, the two fixing plates are fixed to the mounting plate, and each fixing plate is arranged on one side, away from the other clamping plate, of one clamping plate;

each threaded rod penetrates through one fixing plate, the two clamping plates are respectively connected to two opposite ends of the threaded rod, and the two threaded rods can drive the two clamping plates to be close to or far away from each other.

Optionally, the work holder further comprises two cushions, and the two cushions are respectively connected to the surfaces of the two clamping plates, which face away from the threaded rod connected with the clamping plates.

Optionally, the driving mechanism includes a first driving assembly and a second driving assembly, the first driving assembly is disposed on the base, the second driving assembly is connected to the driving assembly, and the mounting plate is disposed on the second driving assembly;

the two direction that the grip block is close to each other of definition is first horizontal direction, first drive assembly can drive the second driving piece with the mounting panel slides along first horizontal direction, the drive of second drive assembly the gliding direction of mounting panel is the second horizontal direction, just the second horizontal direction with first horizontal direction is mutually perpendicular.

Optionally, the first drive assembly comprises:

the first motor is arranged on the base;

the first screw rod is connected to the first motor and extends along the first horizontal direction; and

the first sliding seat is sleeved on the first screw rod, and the second horizontal driving piece is connected to the first sliding seat.

Optionally, the second drive assembly comprises:

the bearing plate is connected to the first sliding seat;

the second motor is connected to the surface, away from the first sliding seat, of the bearing plate;

the second screw rod is connected to the second motor and extends along the second horizontal direction; and

the second slide seat is sleeved on the second lead screw, and the mounting plate is arranged on the second slide seat.

The technical scheme of the utility model scraping experimental apparatus when using, can arrange the work piece that awaits measuring in between two grip blocks in two work piece holder to it is fixed to carry out the centre gripping through two grip blocks to the work piece that awaits measuring. Simultaneously, can install the balancing weight of corresponding size on scraping the pole according to the size of required scraping power for scrape the pole and slide down under the effect of balancing weight. At this time, the scraping head at the lower end of the scraping rod can be extruded on the surface of the workpiece to be measured clamped and fixed in the workpiece clamp. Then, the driving mechanism drives the mounting plate clamped by the workpiece to slide, so that the workpiece to be detected clamped and fixed in the workpiece clamp slides along with the mounting plate and slides relative to the scraping rod, in other words, the scraping head on the scraping rod slides relative to the workpiece to be detected to realize a scraping experiment on the workpiece to be detected, and the scraping resistance of the workpiece to be detected is detected according to the scraping degree of the surface of the workpiece to be detected.

In addition, the scraping experiment device in the scheme clamps and fixes the workpiece to be detected through the mutual approach of the two clamping plates in the workpiece clamp, so that when the workpiece to be detected with different sizes is tested, the workpiece to be detected with different sizes can be fixed in an adaptive manner by controlling the mutual approach distance of the two clamping plates. Simultaneously, scraping subassembly orders about the scraping head through swing joint under the effect of the balancing weight of scraping on the pole of scraping among the scraping experimental apparatus in this scheme and supports and press in the surface of the work piece that awaits measuring for when the scraping force that the work piece that awaits measuring was given in needs adjustment is experimental, can adjust the extrusion force of scraping head to the work piece surface that awaits measuring through the balancing weight of changing different weights or the quantity that changes the balancing weight, and then realize adjusting the scraping force that gives the work piece that awaits measuring. Also can, the work piece that awaits measuring of equidimension not can be fixed to the scraping experimental apparatus in this scheme, also adjusts the scraping power of giving the work piece that awaits measuring simultaneously to this scraping experimental apparatus's suitability in the scraping experiment has been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the scraping experimental apparatus of the present invention;

FIG. 2 is a schematic view of the scraping assembly of the scraping test apparatus of FIG. 1;

FIG. 3 is an exploded view of the wiper assembly of FIG. 2;

FIG. 4 is a schematic view of a workpiece holder of the experimental scraping apparatus shown in FIG. 1;

FIG. 5 is a schematic view of a driving mechanism of the experimental scraping apparatus shown in FIG. 1;

fig. 6 is a schematic structural diagram of another view angle of the driving mechanism of the scraping experimental apparatus in fig. 1.

The reference numbers illustrate:

reference numerals	Name(s)	Reference numerals	Name (R)
				10	Base seat	55	Fixing plate
30	Driving mechanism	57	Threaded rod
				31	First drive assembly	59	Buffer cushion
311	First motor	70	Scraping assembly
				313	First screw rod	71	Fixing frame
315	A first sliding seat	711	Through hole
				33	Second drive assembly	73	Scraping rod
331	Bearing plate	731	Scraping head
				333	Second electric machine	733	Lower segment body
335	Second screw rod	735	Upper segment body
				337	Second slide carriage	75	Balancing weight
50	Workpiece clamp	751	Mounting hole
				51	Mounting plate	753	Mounting notch
53	Clamping plate	90	Workpiece to be measured

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a scraping experimental apparatus.

Referring to fig. 1, in an embodiment of the present invention, the scraping experimental apparatus includes a base 10, a driving mechanism 30, a work holder 50, and a scraping assembly 70. The driving mechanism 30 is arranged on the base 10; the workpiece fixture 50 comprises a mounting plate 51 and two clamping plates 53, wherein the mounting plate 51 is arranged on the driving mechanism 30 and is driven by the driving mechanism 30 to slide, and the two clamping plates 53 are connected to the mounting plate 51 and can approach each other to clamp and fix the workpiece 90 to be measured; the scraping assembly 70 includes a fixing frame 71, a scraping rod 73 and a counterweight 75, the fixing frame 71 is disposed on the base 10, the scraping rod 73 is disposed on the fixing frame 71 in a liftable manner and is located above the workpiece fixture 50, a scraping head 731 is disposed at the lower end of the scraping rod 73, the counterweight 75 is movably connected to the scraping rod 73, and under the action of the counterweight 75, the scraping head 731 is pressed against the workpiece 90 to be tested, which is clamped and fixed in the workpiece fixture 50.

In an embodiment of the present invention, the base 10 can be used to mount the driving mechanism 30, the work holder 50, the scraping assembly 70, and the like, so that the components of the scraping testing apparatus can be assembled into a whole. The base 10 may have a substantially square structure, so that the shape is regular and the base is easy to machine. Of course, the present application is not limited thereto, and in other embodiments, the base 10 may have a substantially cylindrical structure or other shape structures. The driving mechanism 30 may be installed on the upper surface of the base 10, and may drive the workpiece holder 50 to slide in the horizontal direction after being activated, so that the workpiece to be measured 90 fixed in the workpiece holder 50 also slides in the horizontal direction therewith. The mounting plate 51 of the workholding fixture 50 may be used in connection with the drive mechanism 30 while giving the two clamping plates 53 mounting positions. And the two clamping plates 53 can approach each other to clamp and fix the workpiece 90 to be measured. The mounting bracket 71 of the wiping assembly 70 can be used to connect with the base 10 while giving the wiping rod 73 a mounting location. Since the scraping rod 73 is arranged on the rack in a lifting manner, the scraping rod can be pressed against the surface of the workpiece 90 to be measured clamped and fixed in the workpiece clamp 50 under the action of gravity with a downward movement tendency. And when the driving mechanism 30 drives the workpiece clamp 50 to slide, the scraping head 731 at the lower end of the scraping rod 73 and the workpiece 90 to be tested can slide relatively to perform a scraping experiment. The balancing weight 75 is movably connected to the scraping rod 73, so that when the scraping force of the scraping head 731 on the workpiece 90 to be measured needs to be adjusted, the balancing weights 75 with different weights can be replaced or the number of the balancing weights 75 can be changed. For example, when increased scraping force is desired, the heavier weight 75 may be replaced, or the number of weights 75 attached to the scraping bar 73 may be increased.

The technical scheme of the utility model scraping experimental apparatus when using, can arrange workpiece 90 that awaits measuring in between two grip blocks 53 in two work piece holder 50 to it is fixed to carry out the centre gripping to workpiece 90 that awaits measuring through two grip blocks 53. Meanwhile, the counterweight 75 of a corresponding size can be installed on the scraping rod 73 according to the required scraping force, so that the scraping rod 73 slides down under the action of the counterweight 75. At this time, the scraping head 731 at the lower end of the scraping rod 73 can be pressed against the surface of the workpiece 90 to be measured held and fixed in the workpiece holder 50. Then, the driving mechanism 30 drives the workpiece clamping mounting plate 51 to slide, so that the workpiece 90 to be measured clamped and fixed in the workpiece fixture 50 slides and slides relative to the scraping rod 73, in other words, the scraping head 731 on the scraping rod 73 slides relative to the workpiece 90 to be measured, so as to perform a scraping experiment on the workpiece 90 to be measured, so as to detect the scraping resistance of the workpiece 90 to be measured according to the scraping degree of the surface of the workpiece 90 to be measured.

In addition, in the scraping experiment device in the scheme, the workpiece 90 to be measured is clamped and fixed by the two clamping plates 53 in the workpiece fixture 50 approaching each other, so that when the workpiece 90 to be measured is tested in the face of different sizes, the distance between the two clamping plates 53 approaching each other is controlled to be adaptive to fix the workpiece 90 to be measured in different sizes. Meanwhile, in the scraping experimental device in the present scheme, the scraping component 70 drives the scraping head 731 to abut against the surface of the workpiece 90 to be tested under the action of the counterweight block 75 movably connected to the scraping rod 73, so that when the scraping force given to the workpiece 90 to be tested needs to be adjusted, the extrusion force of the scraping head 731 on the surface of the workpiece 90 to be tested can be adjusted by changing different weights of the counterweight blocks 75 or changing the number of the counterweight blocks 75, and the scraping force given to the workpiece 90 to be tested is adjusted. Also can, the work piece 90 that awaits measuring of equidimension not can be fixed to the scraping experimental apparatus in this scheme, also adjusts the scraping power of giving the work piece 90 that awaits measuring simultaneously to this scraping experimental apparatus's suitability in the scraping experiment has been improved.

Referring to fig. 1 to 3, in an embodiment of the present invention, the fixing frame 71 is provided with a through hole 711, the scraping rod 73 includes a lower section 733 and an upper section 735, the lower section 733 is liftably inserted into the through hole 711, both upper and lower ends of the lower section 733 extend out of the through hole 711, and the scraping head 731 is disposed at a lower end of the lower section 733; the upper section body 735 is connected to the upper end of the lower section body 733, and the projection area of the upper section body 735 on the horizontal plane is smaller than that of the lower section body 733 on the horizontal plane, and the counterweight block 75 is provided with a mounting hole 751 and is sleeved on the upper section body 735 through the mounting hole 751.

In this embodiment, the through hole 711 is formed in the fixing frame 71, so that the lower segment 733 of the scraping rod 73 is directly inserted into the through hole 711, and the lifting connection of the scraping rod 73 on the fixing frame 71 can be quickly completed, thereby facilitating the improvement of the convenience in installing the scraping rod 73. The counterweight 75 is directly sleeved on the upper section 735 of the scraping rod 73 through the mounting hole 751, so that the counterweight 75 can be conveniently assembled and disassembled on the scraping rod 73. In addition, because the projection area of the upper section body 735 on the horizontal plane is smaller than the projection area of the lower section body 733 on the horizontal plane, a step is formed at the connection position of the upper section body 735 and the lower section body 733, so that the movable sleeve is provided with the balancing weight 75 on the upper section body 735 for supporting and limiting. Of course, it should be noted that the present application is not limited thereto, and in other embodiments, the scraping rod 73 may be connected to the fixing frame 71 in a sliding manner in the vertical direction through a combination of a sliding block and a sliding groove. The weight 75 can also be movably connected to the lower section 733 of the scraping rod 73.

Referring to fig. 2 and fig. 3, in an embodiment of the present invention, a mounting notch 753 communicating with the mounting hole 751 is formed on a side circumferential surface of the counterweight 75, so that the upper segment 735 enters the mounting hole 751 through the mounting notch 753.

In this embodiment, the weight block 75 is provided with a mounting notch 753, so that the weight block 75 has an unsealed annular structure. At this time, the weight 75 can be directly mounted on the scraping rod 73 through the mounting notch 753 on the side circumferential surface, so that the convenience of taking and placing the weight 75 on the scraping rod 73 can be further improved.

In an embodiment of the present invention, the upper end of the scraping head 731 is inserted into the lower portion 733 and is screwed to the lower portion 733.

In this embodiment, the scraping head 731 is screwed to the lower body 733 of the scraping rod 73, so that when the scraping head 731 is worn seriously or the corresponding scraping head 731 is needed to be used for an experiment according to different types of workpieces 90 to be tested, the scraping head 731 can be detached from the scraping rod 73 for replacement. Moreover, the screw coupling has an advantage of simplicity and reliability, so that it is possible to simplify the attaching and detaching process of the wiping head 731 to the wiping rod 73 while securing the stability of the coupling of the wiping head 731 to the wiping rod 73.

Referring to fig. 2 and fig. 3, in an embodiment of the present invention, a projection of the lower segment 733 on a horizontal plane is square, and the through hole 711 is adapted to the shape of the lower segment 733.

In this embodiment, the cross section of the lower segment body 733 is square, and the through hole 711 is adapted to the shape of the lower segment body 733, so that the rotation of the scraping rod 73 on the fixing frame 71 can be avoided by the abutting limit of the lower segment body 733 and the through hole 711, thereby facilitating the direct and effective rotation of the scraping head 731 for dismounting and mounting the same.

Referring to fig. 1 and 4, in an embodiment of the present invention, the work fixture 50 further includes two fixing plates 55 and two threaded rods 57, the two fixing plates 55 are fixed to the mounting plate 51, and each fixing plate 55 is disposed on a side of one clamping plate 53 away from the other clamping plate 53; each threaded rod 57 penetrates through one fixing plate 55, the two clamping plates 53 are connected to two opposite ends of the two threaded rods 57 respectively, and the two clamping plates 53 can be driven to approach or depart from each other by rotating the two threaded rods 57.

In this embodiment, the two ends of the two threaded rods 57 are opposite to each other, and the threaded rods 57 are in threaded connection with the fixing plate 55, so that the two threaded rods 57 can be close to each other, and then the two clamping plates 53 are driven to be close to each other to clamp and fix the workpiece 90 to be tested. Because the operation process is simple, the convenience of fixing the workpiece to be detected 90 is improved. After the clamping plate 53 and the threaded rod 57 are connected, the threaded rod 57 can rotate relative to the clamping plate 53 in the circumferential direction and is limited and fixed relative to the clamping plate 53 in the axial direction, so that the threaded rod 57 can normally rotate and drive the clamping plate 53 to move in the rotating process. In addition, the present invention is not limited to this, and in another embodiment, when the two clamping plates 53 are moved to abut against the workpiece 90 to be measured, the clamping plates 53 may be fixed to the mounting plate 51 directly by the through screws.

Referring to fig. 4, in an embodiment of the present invention, the work holder 50 further includes two buffering pads 59, and the two buffering pads 59 are respectively connected to the surfaces of the two clamping plates 53 away from the threaded rod 57 connected to the clamping plates 53.

In this embodiment, the cushion pad 59 prevents the clamping plate 53 from rigidly abutting against the workpiece 90 to be measured, thereby being beneficial to preventing the workpiece 90 to be measured from being damaged in the clamping and fixing process. Wherein, this blotter 59 can be rubber pad or silica gel pad.

Referring to fig. 1, fig. 5 and fig. 6, in an embodiment of the present invention, the driving mechanism 30 includes a first driving assembly 31 and a second driving assembly 33, the first driving assembly 31 is disposed on the base 10, the second driving assembly 33 is connected to the driving assembly, and the mounting plate 51 is disposed on the second driving assembly 33; the direction in which the two clamping plates 53 approach each other is defined as a first horizontal direction, the first driving assembly 31 can drive the second driving member and the mounting plate 51 to slide along the first horizontal direction, the direction in which the second driving assembly 33 drives the mounting plate 51 to slide is defined as a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

In the present embodiment, the driving mechanism 30 can drive the second driving assembly 33 and the workpiece holder 50 to slide in the first horizontal direction through the first driving assembly 31, so that the scraping head 731 on the scraping rod 73 can perform a scraping test in the first horizontal direction relative to the workpiece 90 to be tested fixed on the workpiece holder 50. And the workpiece holder 50 can be driven by the second driving assembly 33 to slide in the second horizontal direction, so that the scraping head 731 of the scraping rod 73 can perform a scraping test in the second horizontal direction relative to the workpiece 90 to be tested, which is fixed on the workpiece holder 50. Therefore, the scraping experiment device can perform scraping experiments on the workpiece 90 to be detected in different directions, so that the scraping resistance of the workpiece 90 to be detected can be detected more accurately.

Referring to fig. 1, fig. 5 and fig. 6, in an embodiment of the present invention, the first driving assembly 31 includes a first motor 311, a first lead screw 313 and a first sliding seat 315, the first motor 311 is disposed on the base 10; the first screw 313 is connected to the first motor 311, and the first screw 313 extends along a first horizontal direction; the first sliding base 315 is sleeved on the first screw 313, and the second horizontal driving member is connected to the first sliding base 315.

In this embodiment, the first driving assembly 31 includes the first motor 311, the first lead screw 313 and the first sliding seat 315, and the lead screw transmission has the advantages of stability and reliability, so as to be beneficial to ensuring the stability of the sliding of the second driving assembly 33 and the workpiece fixture 50 in the first horizontal direction, so that the scraping head 731 on the scraping rod 73 can perform a stable scraping experiment on the workpiece 90 to be tested. Similarly, in order to ensure the stability of the workpiece holder 50 sliding in the second horizontal direction, in an embodiment of the present invention, the second driving assembly 33 includes a loading plate 331, a second motor 333, a second lead screw 335, and a second slide 337, the loading plate 331 is connected to the first slide 315; the second motor 333 is connected to the surface of the loading plate 331 away from the first sliding base 315; the second lead screw 335 is connected to the second motor 333, and the second lead screw 335 extends along the second horizontal direction; the second slide 337 is disposed on the second lead screw 335, and the mounting plate 51 is disposed on the second slide 337.

The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (10)

1. A scraping assay device, comprising:

a base;

the driving mechanism is arranged on the base;

the workpiece clamp comprises a mounting plate and two clamping plates, the mounting plate is arranged on the driving mechanism and is driven by the driving mechanism to slide, and the two clamping plates are connected to the mounting plate and can approach each other to clamp and fix a workpiece to be tested; and

the scraping component comprises a fixing frame, a scraping rod and a balancing weight, the fixing frame is arranged on the base, the scraping rod is arranged on the fixing frame in a liftable mode and located above the workpiece fixture, the lower end of the scraping rod is provided with a scraping head, the balancing weight is movably connected with the scraping rod, the balancing weight is under the action of the balancing weight, and the scraping head is pressed against and fixed in a clamping mode on a workpiece to be tested in the workpiece fixture.

2. The scraping experimental apparatus as set forth in claim 1, wherein the fixing frame is provided with a through hole, and the scraping rod includes:

the lower section body is arranged in the penetrating hole in a penetrating mode in a liftable mode, the upper end and the lower end of the lower section body penetrate out of the penetrating hole, and the scraping head is arranged at the lower end of the lower section body; and

the upper segment body, the upper segment body connect in the upper end of the lower segment body, just the upper segment body area of projection on the horizontal plane is less than the area of projection of the lower segment body on the horizontal plane, the balancing weight is equipped with the mounting hole, and passes through the mounting hole cover is located the upper segment body.

3. The scraping experiment device as claimed in claim 2, wherein the lateral periphery surface of the balancing weight is provided with an installation notch communicated with the installation hole, so that the upper section body enters the installation hole through the installation notch.

4. The scraping test apparatus of claim 2, wherein an upper end of the scraping head is inserted into the lower body and is threadably connected to the lower body.

5. The scraping experimental device as recited in claim 4, wherein the projection of the lower section body on the horizontal plane is square, and the through holes are matched with the shape of the lower section body.

6. The scraping experimental apparatus as claimed in any one of claims 1 to 5, wherein the work fixture further comprises two fixing plates and two threaded rods, the two fixing plates are fixed on the mounting plate, and each fixing plate is arranged on one side of the clamping plate away from the other clamping plate;

each threaded rod penetrates through one fixing plate, the two clamping plates are respectively connected to two opposite ends of the threaded rod, and the two threaded rods can drive the two clamping plates to be close to or far away from each other.

7. The scratch experimental apparatus of claim 6, wherein the work holder further comprises two cushions, and the two cushions are respectively connected to the surfaces of the two clamping plates facing away from the threaded rod connected to the clamping plates.

8. The scraping test apparatus of any one of claims 1-5, wherein the drive mechanism includes a first drive assembly and a second drive assembly, the first drive assembly is disposed on the base, the second drive assembly is connected to the drive assembly, and the mounting plate is disposed on the second drive assembly;

the definition is two the direction that the grip block is close to each other is first horizontal direction, first drive assembly can drive the second driving piece with the mounting panel slides along first horizontal direction, the drive of second drive assembly the gliding direction of mounting panel is second horizontal direction, just the second horizontal direction with first horizontal direction is mutually perpendicular.

9. The scraping testing apparatus of claim 8, wherein the first drive assembly includes:

the first motor is arranged on the base;

the first screw rod is connected to the first motor and extends along the first horizontal direction; and

the first screw rod is sleeved with the first sliding seat, and the second horizontal driving piece is connected to the first sliding seat.

10. A scraping assay device according to claim 9, wherein the second drive assembly comprises:

the bearing plate is connected to the first sliding seat;

the second motor is connected to the surface, away from the first sliding seat, of the bearing plate;

the second screw rod is connected to the second motor and extends along the second horizontal direction; and

the second slide, the second slide cover is located the second lead screw, the mounting panel is located the second slide.

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