High-precision grinding disc device of static pressure rotary support

Abstract

The utility model relates to a polishing and grinding machine, in particular to a high-precision grinding disc device of a static pressure rotary support, which comprises a static pressure platform and a grinding disc arranged on the upper side of the static pressure platform, and the static pressure platform comprises a static pressure platform body and a rotary mounting disc arranged on the upper side of the static pressure platform body. The grinding disc is mounted on the rotary mounting disc, a vertical gap is reserved between the static pressure platform body and the rotary mounting disc and filled with hydraulic oil, and a motor drives an output shaft mounted on the static pressure platform body to rotate to drive the rotary mounting disc to rotate relative to the static pressure platform body. And the rotating rotary mounting disc drives the grinding disc to rotate. The rotary mounting disc is completely supported by hydraulic oil, so that mechanical abrasion is avoided when the rotary mounting disc rotates, the grinding disc mounted on the rotary mounting disc is stable when rotating, the end face runout is small, the abrasion loss is small, and the grinding precision is greatly improved.

Description

Technical Field

[0001] The utility model relates to a polishing and grinding machine, in particular to a high-precision grinding disc device with a hydrostatic rotary support. Background Art

[0002] At present, products such as mobile phone panels are generally polished using a polishing and grinding machine, which is a device with two grinding discs rotating in opposite directions, up and down. The product is placed between the two grinding discs for grinding and polishing. This requires the grinding disc to rotate smoothly during processing and have a very small end face runout. As the precision requirements of market products are getting higher and higher, the flatness precision requirements of products also need to reach the micron level. However, the grinding disc device of traditional grinding machines uses a complex mechanical transmission device to drive the lower grinding disc to rotate. It is not only prone to wear, has a large end face runout, and insufficient stability, and it is difficult to achieve a grinding precision of the micron level; moreover, it is inconvenient for maintenance and disassembly. Summary of the Utility Model

[0003] In view of the above technical problems, the utility model provides a high-precision grinding disc device with a hydrostatic rotary support that can improve the grinding precision.

[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows: A high-precision grinding disc device with a hydrostatic rotary support, which includes a hydrostatic platform and a grinding disc arranged on the upper side of the hydrostatic platform. The hydrostatic platform includes a hydrostatic platform body and a rotary mounting disc arranged on the upper side of the hydrostatic platform body. The grinding disc is mounted on the rotary mounting disc. There is an upper and lower gap between the hydrostatic platform body and the rotary mounting disc, and the upper and lower gap is filled with hydraulic oil. The motor drives the output shaft mounted on the hydrostatic platform body to rotate, driving the rotary mounting disc to rotate relative to the hydrostatic platform body, and the rotating rotary mounting disc drives the grinding disc to rotate.

[0005] Preferably, the middle part of the hydrostatic platform body mounts the output shaft through a bearing. The lower end of the output shaft is connected to the motor through a connector, and the upper end is connected to the rotary mounting disc.

[0006] Preferably, the grinding disc includes a base plate and a lower grinding disc sheet fixedly connected to the base plate, and the base plate is mounted on the rotary mounting disc.

[0007] Preferably, several grooves are provided radially on the rotary mounting disc, and several convex strips are correspondingly provided on the base plate, and each convex strip can be inserted into the corresponding groove.

[0008] Preferably, an outer shell is sleeved on the outer periphery of the hydrostatic platform, and the outer shell seals the upper and lower gap from the outer periphery.

[0009] Preferably, a flange is formed around the lower end of the static pressure platform body, and the lower end of the outer shell is fastened to this flange. The upper end face of the outer shell is flush with the upper end face of the rotary mounting disc.

[0010] Preferably, the vertical distance of the vertical gap is 3 mm.

[0011] From the above technical solutions, it can be seen that there is a vertical gap between the static pressure platform body and the rotary mounting disc of the present invention. The vertical gap is filled with hydraulic oil, so that the rotary mounting disc is completely supported by the hydraulic oil. In this way, there is no mechanical wear when the rotary mounting disc rotates. Therefore, when the grinding disc mounted on the rotary mounting disc rotates, it will be very stable, with very small end face runout and very small wear, greatly improving the grinding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic cross-sectional structure diagram of a preferred embodiment of the present invention.

[0013] Figure 2 is a schematic three-dimensional transmission structure diagram of a preferred embodiment of the present invention.

[0014] Figure 3 is a schematic three-dimensional structure diagram of the static pressure platform in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present invention will be described in detail below with reference to the drawings. Here, the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0016] As shown in Figure 1 , Figure 2 and Figure 3 , the present invention provides a high-precision grinding disc device with a static pressure slewing bearing, which includes a static pressure platform 1 and a grinding disc 2 arranged on the upper side of the static pressure platform. The static pressure platform 1 includes a static pressure platform body 11 and a rotary mounting disc 12 arranged on the upper side of the static pressure platform body. The grinding disc is mounted on the rotary mounting disc. There is a vertical gap 13 between the static pressure platform body and the rotary mounting disc. The vertical gap is filled with hydraulic oil. The motor 4 drives the output shaft 5 mounted on the static pressure platform body to rotate, driving the rotary mounting disc to rotate relative to the static pressure platform body. The rotating rotary mounting disc drives the grinding disc to rotate. It can be seen that the rotary mounting disc of the present invention can be completely supported by the hydraulic oil through the fixed static pressure platform body without direct contact with the static pressure platform body, so that there is no mechanical wear during rotation. Obviously, the present invention uses a static pressure platform to replace the traditional complex mechanical transmission device to drive the grinding disc to rotate, increasing the stability, reducing the end face runout and wear when the grinding disc rotates, and greatly improving the grinding accuracy.

[0017] Specifically, the middle part of the static pressure platform body 11 installs the output shaft through a bearing 6. The lower end of the output shaft is connected to the motor 4 through a connecting piece 7, and the upper end is connected to the rotary mounting disc, so as to drive the rotary mounting disc to rotate through the motor and the output shaft, and then drive the grinding disc to rotate. During implementation, the connecting piece can adopt a coupling, etc. At the same time, the static pressure platform body of the present utility model can be kept fixed and non-rotating through the bearing to achieve static pressure support. Preferably, the grinding disc 2 includes a base plate 21 and a lower grinding disc sheet 22 fixedly connected to the base plate. The base plate is installed on the rotary mounting disc, so as to realize the rotation of the lower grinding disc sheet, and then cooperate with the upper grinding disc sheet of the grinding machine to realize the grinding and polishing of the product. During implementation, several grooves 14 are arranged radially on the rotary mounting disc 12, and several convex strips 23 are correspondingly arranged on the base plate 21. Each convex strip can be clamped into the corresponding groove, so as to drive the base plate and the grinding disc sheet to rotate through the groove and the convex strip, which not only has stable transmission, but also is convenient for maintenance and disassembly.

[0018] An outer shell 8 is sleeved on the outer periphery of the static pressure platform of the present utility model, and the outer shell seals the upper and lower gaps from the outer periphery to prevent hydraulic oil leakage. Specifically, a flange 15 is formed on the periphery of the lower end of the static pressure platform body 11, and the lower end of the outer shell can be fastened to the flange by screws. The upper end face of the outer shell is flush with the upper end face of the rotary mounting disc, so as to completely cover the static pressure platform body and the rotary mounting disc through the outer shell, which not only further improves the sealing performance, but also further facilitates maintenance and disassembly. Preferably, the vertical distance of the upper and lower gaps is about 3 mm. By filling hydraulic oil in the upper and lower gaps, the rotary mounting disc can be completely supported, thereby greatly reducing wear, improving the rotation stability, and reducing the end face runout.

Claims

1. A high-precision grinding disk device for a hydrostatic slewing bearing, comprising a hydrostatic platform and a grinding disk arranged on the upper side of the hydrostatic platform, characterized in that: The hydrostatic platform includes a hydrostatic platform body and a rotating mounting disc disposed on the upper side of the hydrostatic platform body. The grinding disc is mounted on the rotating mounting disc. There is an upper and lower gap between the hydrostatic platform body and the rotating mounting disc, and the upper and lower gap is filled with hydraulic oil. The motor drives the output shaft mounted on the hydrostatic platform body to rotate, driving the rotating mounting disc to rotate relative to the hydrostatic platform body, and the rotating rotating mounting disc drives the grinding disc to rotate.

2. The high-precision grinding disk device for the hydrostatic slewing bearing according to claim 1, wherein: The output shaft is mounted in the middle of the hydrostatic platform body through a bearing. The lower end of the output shaft is connected to the motor through a connecting member, and the upper end is connected to the rotating mounting disc.

3. The high-precision grinding disc device for the hydrostatic slewing bearing according to claim 1, wherein: The grinding disc includes a base plate and a lower grinding disc sheet fixedly connected to the base plate. The base plate is mounted on the rotating mounting disc.

4. The high-precision grinding disc device of the hydrostatic slewing bearing according to claim 3, characterized in that: A plurality of grooves are provided on the rotating mounting disc along the radial direction, and a plurality of ridges are correspondingly provided on the base plate. Each ridge can be inserted into the corresponding groove.

5. The high-precision grinding disc device of the hydrostatic slewing bearing according to claim 1, characterized in that: An outer shell is sleeved on the outer periphery of the hydrostatic platform, and the outer shell seals the upper and lower gap from the outer periphery.

6. The high-precision grinding disc device of the hydrostatic slewing bearing according to claim 5, characterized in that: A flange is formed on the periphery of the lower end of the hydrostatic platform body. The lower end of the outer shell is fastened to the flange, and the upper end face of the outer shell is flush with the upper end face of the rotating mounting disc.

7. The high-precision grinding disc device of the hydrostatic slewing bearing according to any one of claims 1 to 6, characterized in that: The vertical distance of the upper and lower gap is 3 mm.

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