Outer diameter polishing device

Abstract

The utility model relates to an outer diameter grinding device, and relates to the field of grinding devices. The outer diameter grinding device comprises a grinding base plate, a limiting circular ring, a circular pressing plate and a driving assembly. The limiting ring is located on the grinding base plate, the circular pressing plate is located in the limiting ring, and a grinding area used for containing a to-be-machined product is formed among the circular pressing plate, the limiting ring and the grinding base plate. The driving assembly is in transmission connection with the circular pressing plate so as to drive the circular pressing plate and the limiting ring to do eccentric motion relative to the grinding base plate. According to the outer diameter grinding device, the technical problem that in the prior art, the outer diameter precision of a detection jig is low is solved.

Description

Technical Field

[0001] The present application relates to the field of grinding devices, and in particular to an outer diameter grinding device. Background Art

[0002] With the rapid development of the industry, the production requirements for the inner hole accuracy of ceramic sleeve products are getting higher and higher. Some equipment has the problems of low inner hole detection efficiency and insufficient accuracy, and the inner hole needs to be inspected; only high-precision and high-surface quality inspection fixtures can inspect the inner hole and thus detect qualified products.

[0003] In the prior art, the accuracy of equipment for machining outer circles can only be guaranteed to be ±0.001 mm, resulting in a problem of low outer diameter accuracy of the machined inspection fixture. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an outer diameter grinding device to alleviate the technical problem of low outer diameter accuracy of the detection fixture existing in the prior art.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] The outer diameter grinding device provided by the utility model comprises a grinding pad, a limiting ring, a circular pressing plate and a driving assembly;

[0007] The limiting ring is located on the grinding pad, the circular pressure plate is located inside the limiting ring, and a grinding area for accommodating a product to be processed is formed between the circular pressure plate, the limiting ring and the grinding pad;

[0008] The driving assembly is in transmission connection with the circular pressing plate to drive the circular pressing plate and the limiting ring to perform eccentric motion relative to the grinding pad.

[0009] Furthermore, the driving assembly is in transmission connection with the top surface of the circular pressure plate.

[0010] Furthermore, the top surface of the circular pressure plate has two spaced-apart positioning holes, and the center line connecting the two positioning holes is parallel to the center line of the circular pressure plate and spaced-apart from each other;

[0011] The driving assembly has two positioning rods, and the two positioning rods are plugged into the two positioning holes in a one-to-one correspondence.

[0012] Furthermore, the distance between the center line of the two positioning holes and the center line of the circular pressing plate is set to 10mm-25mm.

[0013] Furthermore, the circular pressure plate and the limiting ring are loosely matched, and the fitting clearance between the two is set to 0.03-0.05 mm.

[0014] Furthermore, the outer diameter grinding device further includes a support platform;

[0015] The driving assembly and the polishing pad are both installed on the supporting platform, and the driving assembly and the polishing pad are spaced apart.

[0016] Furthermore, the driving assembly includes a driving member and a transmission member, and the driving member is in transmission connection with the transmission member to drive the transmission member to rise and fall in a vertical direction or rotate around its own axis; the transmission member is equipped with two positioning rods.

[0017] Furthermore, the outer diameter grinding device further includes a dripping mechanism, and the end of the dripping mechanism is arranged opposite to the top surface of the circular pressing plate.

[0018] Furthermore, the dripping mechanism includes a tank body and a spray tube, one end of the spray tube is connected to the tank body, and the other end is opposite to the top surface of the circular pressure plate, and the inner diameter of the spray tube gradually decreases from the end close to the tank body to the end close to the circular pressure plate.

[0019] Furthermore, the outer diameter grinding device further includes a timing mechanism, and the timing mechanism is connected to the driving component signal.

[0020] Based on the above technical solutions, the technical effects that can be achieved by this utility model are analyzed as follows:

[0021] The utility model provides an outer diameter grinding device comprising a grinding pad, a limiting ring, a circular pressure plate, and a drive assembly. The limiting ring is positioned on the grinding pad, and the circular pressure plate is positioned within the limiting ring. A grinding area for accommodating the product to be processed is formed between the circular pressure plate, the limiting ring, and the grinding pad. The drive assembly is in transmission connection with the circular pressure plate to drive the circular pressure plate and the limiting ring to perform eccentric motion relative to the grinding pad. Eccentric motion is a special form of motion whose trajectory is not a standard circle or straight line, but rather a rotation around a point that is not its geometric center. When the drive assembly drives the circular pressure plate and the limiting ring to perform eccentric motion relative to the grinding pad, the product to be processed rotates and slides simultaneously, thereby causing the product to rotate uniformly and at a constant speed throughout 360 degrees without blind spots, achieving uniform grinding of the outer surface of the product to be processed and improving grinding accuracy. The outer diameter grinding device can be used to grind the outer cylindrical surfaces of workpieces such as shafts, sleeves, and wires, as well as high-precision inspection jigs such as plug gauges and spindles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0023] Figure 1 The structural schematic diagram of the outer diameter polishing device provided by the embodiments of the present application is shown in the figure.

[0024] Figure 2 The assembly drawing of the parts shown in the figure. Figure 1

[0025] Figure 3 The assembly drawing of the parts shown in the figure. Figure 2

[0026] Figure 4 The structural schematic diagram of the circular pressing plate in the outer diameter polishing device provided by the embodiments of the present application is shown in the figure.

[0027] Figure 5 The structural schematic diagram of the limiting circular ring in the outer diameter polishing device provided by the embodiments of the present application is shown in the figure.

[0028] Figure:

[0029] 1-grinding pad plate;

[0030] 2-limiting circular ring;

[0031] 3-circular pressing plate; 31-positioning hole;

[0032] 4-driving assembly; 41-transmission member; 42-positioning rod;

[0033] 5-product to be processed;

[0034] 6-supporting table;

[0035] 7-dripping mechanism; 71-tank body; 72-jet pipe;

[0036] 8-timing mechanism. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] ​​In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0039] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] With the rapid growth of the ceramic sleeve industry, customers are increasingly demanding higher precision machining for their products. This necessitates innovation and creativity in high-precision outer diameter machining technology, optimizing existing processes and developing new devices and equipment to meet these complex processes and high-precision machining requirements. This innovative technology demands not only extremely high dimensional accuracy and surface quality, but also a high degree of stability and reliability during the machining process.

[0041] High-precision outer diameter machining technology can ensure that the product's dimensional accuracy, shape accuracy and surface quality reach extremely high levels, thereby improving the overall performance and reliability of the product. This is especially important for components that need to withstand high stress, high speed or high-precision control.

[0042] At present, the production requirements for the inner hole accuracy of ceramic sleeves are getting higher and higher. Some equipment has the problem of low efficiency and insufficient accuracy in inner hole detection. It is necessary to detect the inner hole and the corresponding high-precision go and no-go gauges processed to ensure the accuracy of the high-precision requirements of the inner hole. Only high-precision and high-surface quality detection fixtures can detect qualified products.

[0043] At present, the precision of domestic equipment for processing external circles can only be guaranteed to be ±0.001mm, and even the precision of foreign equipment can only be guaranteed to be ±0.0005mm, which means there is a problem of low processing precision.

[0044] In view of this, see Figures 1 to 5The outer diameter grinding device provided by the embodiment of the present invention includes a grinding pad 1, a limiting ring 2, a circular pressure plate 3 and a driving assembly 4; the limiting ring 2 is located on the grinding pad 1, the circular pressure plate 3 is located inside the limiting ring 2, and a grinding area for accommodating the product 5 to be processed is formed between the circular pressure plate 3, the limiting ring 2 and the grinding pad 1; the driving assembly 4 is transmission-connected to the circular pressure plate 3 to drive the circular pressure plate 3 and the limiting ring 2 to perform eccentric movement relative to the grinding pad 1.

[0045] Specifically, the limiting ring 2 is set in a circular shape. Compared with the limiting ring 2 set in a square shape, the limiting ring 2 has no dead angle, avoiding the problem that the product 5 to be processed enters the dead angle of the limiting ring 2 and breaks; the shape of the circular pressure plate 3 matches the limiting ring 2 and is set in a circular shape. The outer diameter grinding device has high precision and can process products with high outer diameter precision. The precision of the product can reach ±0.0002mm; it has high applicability and can process rods and tubes with an outer diameter of 0.5-50mm. The product has high dimensional accuracy and the surface quality of the product can reach the level of a mirror, with reduced friction and no defects; it is easy to operate. The product 5 to be processed is placed in the grinding area and automatically ground after the time is set. Semi-automatic grinding and processing can be achieved, and data testing can be performed after the time is up.

[0046] Eccentric motion is a special form of motion whose trajectory is not a standard circle or straight line, but rather a rotation around a point that is not its geometric center. When the drive assembly 4 drives the circular pressure plate 3 and the limiting ring 2 to perform eccentric motion relative to the grinding pad 1, the product 5 to be processed rotates and slides simultaneously, thereby causing the product 5 to rotate 360 ​​degrees at a uniform speed without dead angles, achieving uniform grinding of the outer surface of the product 5 to be processed and improving grinding accuracy. This outer diameter grinding device can be used to grind the outer cylindrical surfaces of workpieces such as shafts, sleeves, and steel wires, as well as high-precision inspection fixtures such as plug gauges and spindles.

[0047] The structure and shape of the outer diameter grinding device are described in detail below:

[0048] In an optional solution of the embodiment of the present utility model, the driving assembly 4 is transmission-connected to the top surface of the circular pressing plate 3 .

[0049] Specifically, in this embodiment, the thickness of the circular pressure plate 3 is smaller than the thickness of the limiting ring 2 .

[0050] The driving assembly 4 is in transmission connection with the top surface of the circular pressing plate 3, so as to avoid the problem that the limiting ring 2 needs to avoid due to the connection between the driving assembly 4 and the side wall of the circular pressing plate 3.

[0051] In an optional solution of an embodiment of the present utility model, the top surface of the circular pressure plate 3 has two spaced-apart positioning holes 31, and the center line connecting the two positioning holes 31 is spaced apart and parallel to the center line of the circular pressure plate 3; the driving assembly 4 has two positioning rods 42, and the two positioning rods 42 are plugged into the two positioning holes 31 one by one.

[0052] Specifically, the inner diameter of the limiting ring 2 is designed based on the size of the product 5 to be processed, preventing the product 5 from flying out during the grinding process and causing it to break. The circular pressure plate 3 matches the inner hole of the limiting ring 2, evenly placing the product 5 within the limiting ring 2. The circular pressure plate 3 is used to press the product 5 to prevent the product 5 from stacking during processing.

[0053] The two positioning rods 42 and the two positioning holes 31 are correspondingly plugged in, so that the driving component 4 can drive the circular pressure plate 3; the center line of the two positioning holes 31 is arranged parallel to the center line of the circular pressure plate 3, so that the driving component 4 drives the circular pressure plate 3 to perform eccentric movement.

[0054] In an optional solution of the embodiment of the present utility model, the distance between the center line of the two positioning holes 31 and the center line of the circular pressing plate 3 is set to 10mm-25mm.

[0055] Specifically, in this embodiment, the distance between the center line of the two positioning holes 31 and the center line of the circular pressing plate 3 is set to 15 mm or 20 mm.

[0056] Two positioning holes 31 are machined on the circular pressing plate 3. In principle, the larger the eccentricity of the positioning hole 31, the better, and the more complete the grinding track of the product 5 to be processed; but if the eccentricity of the positioning hole 31 is too large, it is easy to cause the product 5 to be processed to fly out.

[0057] In an optional solution of the embodiment of the present utility model, the circular pressure plate 3 and the limiting ring 2 are clearance-matched, and the clearance between the two is set to 0.03-0.05 mm.

[0058] Specifically, the gap between the limiting ring 2 and the circular pressure plate 3 must allow the circular pressure plate 3 to be easily inserted into or removed from the limiting ring 2, while also preventing the gap from being too small, which would cause a vacuum, i.e., the circular pressure plate 3 would not be able to press the product 5 to be processed, causing the product 5 to pile up. Furthermore, the gap must be too large, which would prevent the product 5 with a large outer diameter from entering the gap, causing it to break or fracture. In this embodiment, the clearance between the circular pressure plate 3 and the limiting ring 2 is set to 0.04 mm.

[0059] The circular pressure plate 3 and the limiting ring 2 are clearance-matched, and the clearance between the two is set to 0.04 mm, so that the circular pressure plate 3 can be freely placed in or taken out of the limiting ring 2, avoiding the phenomenon of vacuum caused by too small a gap and the problem of small outer diameter product 5 to be processed entering the gap and being broken and fractured due to too large a gap.

[0060] In an optional solution of the embodiment of the present invention, the outer diameter grinding device further includes a support platform 6; the driving component 4 and the grinding pad 1 are both installed on the support platform 6, and the driving component 4 and the grinding pad 1 are spaced apart.

[0061] Specifically, the grinding pad 1 is made of 45-gauge steel and quenched to ensure its wear resistance. The length and width of the grinding pad 1 are manufactured according to the specifications of the product 5 to be processed, and after manufacturing, it is connected to the support platform 6. The thickness of the grinding pad 1 needs to be greater than or equal to 40 mm to prevent deformation. In addition, the upper and lower surfaces of the grinding pad 1 need to be flat-ground to improve the flatness of the grinding pad 1.

[0062] The support platform 6 is used to support and fix the driving assembly 4 and the polishing pad 1 .

[0063] In an optional solution of the embodiment of the present invention, the driving assembly 4 includes a driving member and a transmission member 41. The driving member is connected to the transmission member 41 to drive the transmission member 41 to rise and fall in the vertical direction or rotate around its own axis; the transmission member 41 is equipped with two positioning rods 42.

[0064] Specifically, the driving member includes a rotating driving member and a telescopic driving member, which are connected to the transmission member 41 at the same time to drive the transmission member 41 to rise, fall or rotate.

[0065] The transmission member 41 can be raised and lowered, so that the transmission member 41 can be lowered to connect with the circular pressing plate 3 after the circular pressing plate 3 is placed; the transmission member 41 can be rotated, so as to drive the circular pressing plate 3 to move eccentrically.

[0066] In an optional solution of the embodiment of the present utility model, the outer diameter grinding device further includes a dripping mechanism 7 , and the end of the dripping mechanism 7 is arranged opposite to the top surface of the circular pressing plate 3 .

[0067] In an optional scheme of an embodiment of the present invention, the dripping mechanism 7 includes a tank body 71 and a spray tube 72, one end of the spray tube 72 is connected to the tank body 71, and the other end is opposite to the top surface of the circular pressure plate 3, and the inner diameter of the spray tube 72 gradually decreases from the end close to the tank body 71 to the end close to the circular pressure plate 3.

[0068] Specifically, the cross section of the injection pipe 72 is annular, and the inner diameter of the injection pipe 72 gradually decreases so that the flow velocity at the end of the injection pipe 72 increases.

[0069] The outer diameter grinding device processes products in a free process, which requires diamond grinding fluid. It can process the surface of the product in a free process, and requires dripping the grinding fluid. In addition, the grinding fluid diamond needs to be fine micro-powder diamond in the grinding fluid configuration. Large particle size will affect the accuracy of the outer diameter and the quality of the external surface.

[0070] In an optional solution of the embodiment of the present utility model, the outer diameter grinding device further includes a timing mechanism 8 , and the timing mechanism 8 is connected to the driving component 4 by signal.

[0071] Specifically, when processing the product 5, the outer diameter of the product 5 is measured at specific times. Repeated measurements are required, and processing is stopped when the required size is met. The duration of each processing step can be controlled by a timing mechanism 8. The timing mechanism 8 is connected to the drive assembly 4 by signal. When the grinding reaches the set time of the timing mechanism 8, the timing mechanism 8 transmits a signal to the drive assembly 4 to stop the grinding operation.

[0072] The timing mechanism 8 is connected to the drive assembly 4 by signal, which facilitates the control of the grinding time and avoids over-processing.

[0073] The following is an example of how to use the outer diameter grinding device:

[0074] When it is necessary to process an inner hole of φ2.2×φ1.2475×11 and the accuracy of the inner hole is φ1.2475+0.001mm, a high-precision inspection fixture is required. The go gauge uses φ1.2475+0.0002mm, and the stop gauge uses φ1.2485-0.0002mm. Take the inspection fixtures for processing these two high-precision outer diameters as an example.

[0075] First, prepare the blanks needed for the two fixtures, use a normal centerless grinder for semi-fine grinding, reserve a processing amount of 0.002mm, and use the outer diameter grinding device for high-precision grinding.

[0076] For high-precision outer diameter product processing, it is necessary to configure the corresponding diamond grinding fluid as the grinding medium. Adjust the dripping time and frequency.

[0077] First, the flat grinding repair completed grinding pad plate 1 is placed on the support table 6, and is fixed. Then the limiting ring 2 is placed on the grinding pad plate 1, and the semi-finished product of semi-finishing is placed in the limiting ring 2 and is evenly laid, and the diamond grinding liquid is pre-added. Then the circular pressing plate 3 is slowly placed in the inner hole of the limiting ring 2, and is uniformly dropped until it is completely pressed to the semi-finished product. Then the transmission member 41 and the two eccentric positioning holes 31 on the circular pressing plate 3 are connected, and after completion, the transmission member 41 is locked, and then the time required according to the process is set on the timing mechanism 8. Finally, the dripping mechanism 7 is started, and the operation switch of the equipment is started. The outer diameter polishing device starts to rotate according to the eccentric circle track, so that the product can be uniformly polished and processed according to the track. After the time is up, the size of the product is detected, and after completion, the above actions are repeated for repeated processing and measurement until the product is qualified, and the equipment can stop running.

[0078] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0079] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An outer diameter grinding device, characterized in that: include: A grinding pad (1), a limiting ring (2), a circular pressure plate (3) and a driving assembly (4); The limiting ring (2) is located on the grinding pad (1), the circular pressure plate (3) is located inside the limiting ring (2), and a grinding area for accommodating a product (5) to be processed is formed between the circular pressure plate (3), the limiting ring (2) and the grinding pad (1); The driving assembly (4) is in transmission connection with the circular pressing plate (3) to drive the circular pressing plate (3) and the limiting ring (2) to perform eccentric movement relative to the grinding pad (1).

2. The outer diameter grinding device according to claim 1, characterized in that: The driving assembly (4) is in transmission connection with the top surface of the circular pressing plate (3).

3. The outer diameter grinding device according to claim 2, characterized in that: The top surface of the circular pressing plate (3) has two spaced-apart positioning holes (31), and the center line connecting the two positioning holes (31) is parallel to the center line of the circular pressing plate (3) and spaced-apart from each other; The driving assembly (4) has two positioning rods (42), and the two positioning rods (42) are plugged into the two positioning holes (31) in a one-to-one correspondence.

4. The outer diameter grinding device according to claim 3, characterized in that: The distance between the center line of the two positioning holes (31) and the center line of the circular pressing plate (3) is set to 10mm-25mm.

5. The outer diameter grinding device according to claim 4, characterized in that: The circular pressing plate (3) and the limiting circular ring (2) are clearance-matched, and the clearance between the two is set to 0.03-0.05 mm.

6. The outer diameter grinding device according to claim 5, characterized in that: The outer diameter grinding device further includes a support platform (6); The driving assembly (4) and the grinding pad (1) are both mounted on the supporting platform (6), and the driving assembly (4) and the grinding pad (1) are spaced apart.

7. The outer diameter grinding device according to claim 6, characterized in that: The driving assembly (4) comprises a driving member and a transmission member (41), wherein the driving member is in transmission connection with the transmission member (41) to drive the transmission member (41) to rise and fall in a vertical direction or to rotate around its own axis; the transmission member (41) is provided with two positioning rods (42).

8. The outer diameter grinding device according to claim 1, characterized in that: The outer diameter grinding device further comprises a dripping mechanism (7), the end of which is arranged opposite to the top surface of the circular pressing plate (3).

9. The outer diameter grinding device according to claim 8, characterized in that: The dripping mechanism (7) comprises a tank body (71) and a spray pipe (72), one end of the spray pipe (72) is connected to the tank body (71), and the other end is opposite to the top surface of the circular pressing plate (3), and the inner diameter of the spray pipe (72) gradually decreases from the end close to the tank body (71) to the end close to the circular pressing plate (3).

10. The outer diameter grinding device according to claim 1, characterized in that: The outer diameter grinding device further comprises a timing mechanism (8), and the timing mechanism (8) is connected to the driving component (4) by signal.

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