Adjustable pressure mechanism for a four-sided grinder

Abstract

This utility model discloses an adjustable pressure mechanism for a four-corner grinding machine, comprising a base, a fixed base, and a grinding turntable arranged sequentially from bottom to top. Pressure guide components are evenly spaced at the four corners of the fixed base, and a pressure component is located at the bottom of the fixed base. Each pressure component is connected at one of its four corners to one of the four pressure guide components. The pressure component can drive the four pressure guide components to move synchronously relative to the grinding turntable in the vertical direction. The technical solution proposed by this utility model allows the four pressure guide components to simultaneously and evenly apply downward pressure under the pressure control of the pressure components, solving the problem of traditional four-corner pressure grinding machines' inflexible adjustment and / or pressure setting. While maintaining the high precision and high stability characteristics of four-corner pressure grinding equipment, it greatly expands its process flexibility.

Description

Technical Field

[0001] This utility model belongs to the field of grinding machine technology, specifically an adjustable pressure mechanism for a four-corner grinding machine. Background Technology

[0002] A four-corner (pressure) polishing machine is a precision polishing device primarily used for polishing the end faces of fiber optic connectors in the optical communication industry. Traditional four-corner pressure polishing machines typically lack adjustable pressure, relying on springs in the four pressure columns and the polishing fixture to control the polishing force. This severely limits the range of applicable products and processes. To address this, Seiko Giken (Nippon Seiko) launched an adjustable-pressure four-corner pressure polishing machine in 2024. Its pressure adjustment is achieved by using four lifting mechanisms to raise the polishing turntable. This method ensures absolute parallelism between the turntable and the polishing disc, guaranteeing uniform pressure across all positions. However, it also has some drawbacks, such as:

[0003] 1. Structural limitations: The lifting mechanism is located below the turntable, where space is limited, resulting in a small size of the moving mechanism. Lifting is achieved using only 4-6 splined shafts of about 10mm each, which limits positioning accuracy and makes the mechanism prone to wear, thus restricting long-term stability.

[0004] 2. Prone to malfunction: The lifting mechanism is located at the bottom of the turntable. Dirt, dust, and grinding fluid generated by the rotation of the turntable can easily seep into the gaps of the moving parts in the lifting mechanism during the lifting process, which can easily lead to corrosion, jamming, or pressure changes in the parts.

[0005] In view of this, an adjustable pressure mechanism for a four-corner grinding machine is proposed. Utility Model Content

[0006] To overcome the shortcomings of the prior art, the purpose of this utility model is to provide an adjustable pressure mechanism for a four-corner grinding machine.

[0007] The technical solution adopted by this utility model is as follows: an adjustable pressure mechanism for a four-corner grinding machine includes a base, a fixed base, and a grinding turntable arranged sequentially from bottom to top. Pressure guide components are equally spaced at the four corners of the fixed base, and a pressure component is provided at the bottom of the fixed base. The four corners of the pressure component are respectively connected to the four sets of pressure guide components. The pressure component can drive the four sets of pressure guide components to move synchronously in the vertical direction relative to the grinding turntable.

[0008] In a preferred embodiment, the pressure guiding assembly includes a pressure column, a ball sleeve, and a ball guide sleeve, wherein the ball sleeve is fitted outside the pressure column, the ball sleeve is disposed inside the ball guide sleeve, and is movable relative to the ball guide sleeve in the vertical direction.

[0009] In a preferred embodiment, the four corners of the fixing base are provided with through holes, and the four ball bearing guide sleeves are nested in the through holes. The bottom of the fixing base is also provided with a locking ring connected to the ball bearing guide sleeves.

[0010] In a preferred embodiment, the pressure guide assembly further includes a corrugated rubber ring disposed on the top of the fixing base and fitted over the pressure column.

[0011] In a preferred embodiment, the pressurizing assembly includes a connecting plate, a pressurizing connecting rod, and a driving component. Each of the four corners of the connecting plate has a connecting lug protruding outwards, and the connecting lug is locked to the pressurizing column by bolts.

[0012] In a preferred embodiment, the pressure connecting rod is installed at the bottom center of the connecting plate, and there are several driving components, which are installed at the bottom of the fixed base by a fixing bracket. The output ends of the several driving components are all connected to the pressure connecting rod.

[0013] In a preferred embodiment, stepped holes are provided through the four corners of the connecting plate, and the bottom of the fixing base is provided with a level post corresponding to the four stepped holes. The bottom of the level post extends out of the connecting plate, and a compression spring fitted on the level post is installed in the stepped hole.

[0014] In a preferred embodiment, the pressure connecting rod is generally U-shaped, and the top of the pressure connecting rod extends to both ends to form mounting plates, which are fastened to the bottom of the connecting plate by fasteners.

[0015] In a preferred embodiment, a drive motor is installed at the center of the bottom of the fixed base, the output end of the drive motor is connected to the grinding disc, and the pressure connecting rod and the connecting plate together form a receiving space for accommodating the drive motor.

[0016] In a preferred embodiment, the connecting plate has a through hole larger than the size of the drive motor.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, the pressure guiding components are designed at the four corners of the fixed base, and the ball bearing sleeve and ball bearing guide sleeve are used to achieve the simultaneous and uniform vertical movement of the four pressure guiding components parallel to the turntable surface. When adjusting the pressure, the pressure connecting rod is driven by the driving component to drive the connecting plate and the four pressure guiding components to move as a whole. The four pressure guiding components can simultaneously and uniformly apply downward pressure under the pressure control of the pressure components, which solves the problem that the traditional four-corner pressure cannot flexibly adjust and / or set the pressure. While maintaining the high precision and high stability of the four-corner pressure grinding equipment, it greatly expands its process flexibility.

[0019] 2. In this utility model, the pressure transmission and pressure control mechanism is set on the four pressure columns of the equipment, far away from the grinding fluid and the center of equipment operation. The diameter of the positioning part can be made larger, and the pressure load, positioning accuracy and stability can be greatly improved. On the other hand, dust, grinding fluid and other particles are not easy to enter the pressure adjustment mechanism, which can greatly improve the life and reliability of the equipment. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention with the base omitted.

[0022] Figure 3 This is an exploded three-dimensional structural diagram of the present invention with the base omitted.

[0023] Marked in the image:

[0024] 100-Base;

[0025] 200 - Fixing base, 210 - Through hole;

[0026] 300-Grinding turntable;

[0027] 400-Pressure guide assembly, 410-Corrugated rubber ring, 420-Pressure column, 430-Ball sleeve, 440-Ball guide sleeve, 450-Locking ring;

[0028] 500-Pressure assembly, 510-Pressure connecting rod, 520-Connecting plate, 530-Driver, 540-Fixing bracket, 550-Elevation column, 560-Compression spring, 570-Bolt;

[0029] 600 - Drive motor. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] An adjustable pressure mechanism for a four-corner grinding machine, as described in the following figure. Figure 1-3 The system includes a base 100, a fixed base 200, and a grinding turntable 300 arranged sequentially from bottom to top. Pressure guide components 400 are evenly spaced at the four corners of the fixed base 200, and pressure components 500 are arranged at the bottom of the fixed base 200. The four corners of the pressure components 500 are connected to four sets of pressure guide components 400 respectively. The pressure components 500 can drive the four sets of pressure guide components 400 to move synchronously in the vertical direction relative to the grinding turntable 300. By designing the pressure guide components 400 at the four corners of the fixed base 200, they can be kept away from the grinding fluid and the center of equipment operation. Moreover, the overall pressure adjustment mechanism can be made larger, and the pressure load, positioning accuracy, and stability can be greatly improved.

[0034] Specifically, please refer to Figure 2 and Figure 3As shown, the pressure guiding assembly 400 includes a pressure column 420, a ball sleeve 430, and a ball guide sleeve 440. The ball sleeve 430 is fitted outside the pressure column 420 and disposed inside the ball guide sleeve 440, and can move vertically relative to the ball guide sleeve 440. The fixing base 200 has through holes 210 at each of its four corners, and the four ball guide sleeves 440 are correspondingly nested within the through holes 210. The bottom of the fixing base 200 is also provided with a locking ring 45 connected to the ball guide sleeves 440. The pressure guide assembly 400 adopts the lifting and guiding cooperation of ball sleeve 430 and ball guide sleeve 440, which can realize that the four pressure guide assemblies 400 can move up and down simultaneously and evenly parallel to the surface of the grinding turntable 300. Under the pressure control of the pressure assembly 500, pressure can be applied downwards simultaneously and evenly. This solves the problem that traditional four-corner pressure cannot be flexibly adjusted and / or set. While maintaining the high precision and high stability of the four-corner pressure grinding equipment, it greatly expands its process flexibility.

[0035] In this embodiment, please refer to Figure 1 and Figure 3 As shown, the pressure guiding assembly 400 also includes a corrugated rubber ring 410. The corrugated rubber ring 410 is disposed on the top of the fixed base 200 and fitted over the pressure column 420. The corrugated rubber ring 410 is used as an external seal at the connection between the pressure column 420 and the fixed base 200. In actual use, dust and grinding fluid are less likely to enter the pressure mechanism through the gap between the pressure column 420 and the fixed base 200, which can greatly improve the service life and reliability.

[0036] In this embodiment, please refer to Figure 2 and Figure 3 As shown, the pressurizing assembly 500 includes a connecting plate 520, a pressurizing connecting rod 510, and a driving component 530. The connecting plate 520 has connecting ears protruding outwards at all four corners. These connecting ears are locked to the pressure column 420 by bolts 570. The pressurizing connecting rod 510 is installed at the bottom center of the connecting plate 520. Several driving components 530 are installed at the bottom of the fixing base 200 via fixing brackets 540. The output ends of each driving component 530 are connected to the pressurizing connecting rod 510. The pressurizing connecting rod 510 has a U-shaped structure, with the top of the pressurizing connecting rod 510 facing outwards. The two ends extend to form mounting plates, which are fastened to the bottom of the connecting plate 520 by fasteners. During the pressurization process, the drive component 530 extends and retracts to move the pressurizing connecting rod 510. During the movement of the pressurizing connecting rod 510, the connecting plate 520 and the four pressurizing guide components 400 connected to it can be moved synchronously. During the movement, the grinding fixture (not shown in the figure) installed between the four pressurizing guide components 400 can move parallel to the grinding turntable 300 in the vertical direction. During the synchronous rotation of the grinding turntable 300, the grinding pressure can be adjusted.

[0037] Specifically, the drive component 530 is a cylinder or a motor. By adjusting the air pressure of the pressurizing cylinder or the position of the motor, the grinding pressure can be precisely controlled while maintaining the overall operating accuracy and / or rigidity of the equipment. In this embodiment, there are two drive components 530. In other embodiments, there may be other numbers, which are not limited here.

[0038] In this embodiment, please refer to Figure 2 and Figure 3 As shown, a drive motor 600 is installed at the center of the bottom of the fixed base 200. The output end of the drive motor 600 is connected to the grinding turntable 300. The pressure connecting rod 510 and the connecting plate 520 form a receiving space for accommodating the drive motor 600. The center of the connecting plate 520 has a hole larger than the size of the drive motor 600, so that the normal use of the drive motor 600 will not be affected during the pressure adjustment process.

[0039] In this embodiment, please refer to Figure 2 and Figure 3 As shown, stepped holes are provided through the four corners of the connecting plate 520. The bottom of the fixing base 200 is provided with equal-level posts 550 corresponding to the four stepped holes. The bottom of the equal-level posts 550 extends out of the connecting plate 520. A compression spring 560 is installed in the stepped hole and fitted on the equal-level post 550. Under normal unadjusted conditions, the spring force of the compression spring 560 itself can drive the pressure guide assembly 400 to move upward to a high position without affecting the overall grinding operation.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A four-corner lapping machine adjustable pressure mechanism, comprising a base, a fixed seat and a lapping turntable arranged in sequence from bottom to top, characterized in that, The fixed base is provided with pressure guide components at equal intervals at its four corners, and a pressure component is provided at the bottom of the fixed base. The four corners of the pressure component are respectively connected to the four sets of pressure guide components. The pressure component can drive the four sets of pressure guide components to move synchronously in the up and down direction relative to the grinding turntable.

2. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 1, characterized in that: The pressure guiding assembly includes a pressure column, a ball sleeve, and a ball guide sleeve, wherein the ball sleeve is fitted outside the pressure column and disposed inside the ball guide sleeve, and can move relative to the ball guide sleeve in the vertical direction.

3. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 2, characterized in that: The fixed base has through holes at all four corners, and the four ball bearing guide sleeves are nested in the through holes. The bottom of the fixed base is also provided with a locking ring that is connected to the ball bearing guide sleeves.

4. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 3, characterized in that: The pressure guide assembly also includes a corrugated rubber ring, which is disposed on the top of the fixed base and fitted over the pressure column.

5. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 2, characterized in that: The pressurizing assembly includes a connecting plate, a pressurizing connecting rod, and a driving component. The four corners of the connecting plate protrude outward to form connecting ears, which are bolted to the pressurizing column.

6. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 5, characterized in that: The pressure connecting rod is installed at the bottom center of the connecting plate. There are several driving components, which are installed at the bottom of the fixed base through a fixing bracket. The output ends of the several driving components are all connected to the pressure connecting rod.

7. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 6, characterized in that: The connecting plate has stepped holes at all four corners. The bottom of the fixing base is provided with a level post corresponding to the four stepped holes. The bottom of the level post extends out of the connecting plate. A compression spring is installed in the stepped hole and fitted on the level post.

8. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 6, characterized in that: The pressure connecting rod is U-shaped, and the top of the pressure connecting rod extends to both ends to form mounting plates. The mounting plates are fastened to the bottom of the connecting plates by fasteners.

9. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 8, characterized in that: A drive motor is installed at the center of the bottom of the fixed base. The output end of the drive motor is connected to the grinding disc. The pressure connecting rod and the connecting plate together form a receiving space for accommodating the drive motor.

10. The adjustable pressure mechanism of the four-corner grinding machine as described in claim 9, characterized in that: The connecting plate has a through hole larger than the size of the drive motor.

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