A flat lapping fixing structure

Abstract

The utility model relates to the technical field of grinding fixing, concretely to a plane grinding fixed structure, including, this plane grinding fixed structure, including the shell, the rotating shaft of installing at the bottom of shell and install the grinding disc at the top of rotating shaft, still include: the pressing mechanism, set up in the shell, the pressing mechanism includes the clamping mechanism and the connecting block, the clamping mechanism carries out adaptive clamping to the work piece placed on the grinding disc, the connecting block carries out the connection between the clamping mechanism, drive the inner ring and the outer ring through setting up the hydraulic cylinder, its output end moves downward, when the inner ring bottom is pressed against the grinding disc, the output end continues to drop, the helical groove on the output end drives the rotation block to rotate, so that the outer ring vertical direction continues to keep and the grinding disc interval unchangeable simultaneously, produces lateral rotation, pushes through the connecting rod, the contact block slides inwards radially and cuts in, adaptive clamping to the work piece all around.

Description

Technical Field

[0001] This utility model relates to the field of grinding and fixing technology, specifically a planar grinding and fixing structure. Background Technology

[0002] In the field of surface grinding, traditional clamping methods for fixed structures include elastic gaskets, epoxy resin bonding, or vacuum adsorption. Although these methods can achieve initial fixation of thin workpieces, they have inherent defects: On the one hand, uneven distribution of clamping force during clamping can easily lead to workpiece deformation, especially for thin workpieces with insufficient rigidity. The residual stress after heat treatment is superimposed with the clamping stress, further aggravating the warping problem. On the other hand, due to vibration, heat-affected zone, and coolant dynamic pressure during processing, micro-slippage can easily occur between the workpiece and the fixture, resulting in the accumulation of flatness errors, which makes it difficult to meet the requirements of precision machining.

[0003] To address the issue of workpiece fixation during surface grinding, Chinese Patent Publication No. CN219704495U discloses a surface grinding fixing structure, including a base with a support column fixedly connected to the top. Material is placed inside the outer clamping plate. Starting the motor rotates the output end, causing the grinding disc to rotate and grind the material. A cylinder descends, causing inner and outer connecting rods to drive a pressure plate to compress the material. A telescopic spring prevents excessive pressure during the downward pressing process, thus avoiding material damage. When grinding ends, the cylinder rises, causing the telescopic spring to vibrate and prevent material adhesion. As the grinding disc rotates, an arc-shaped fixing plate limits the outer clamping plate, fixing it and preventing detachment. A second anti-slip roller and a first anti-slip roller drive the outer clamping plate to rotate, making the grinding process simpler and improving the grinding effect. In the above scheme, the vertical clamping is achieved by the relative compression of the cylinder output end and the grinding disc, and the lens is laterally fixed by the outer clamping plate. However, this cannot solve the problems of workpiece deformation caused by uneven distribution of clamping force during clamping and the micro-slippage between the workpiece and the fixture caused by vibration and heat during processing. Therefore, we propose a planar grinding fixing structure. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a planar grinding fixing structure, including a housing, a rotating shaft mounted at the bottom of the housing, and a grinding disc mounted at the top of the rotating shaft, and further comprising: A pressing mechanism is disposed inside the housing. The pressing mechanism includes a clamping mechanism and a connecting block. The clamping mechanism adaptively clamps the workpiece placed on the grinding disc, and the connecting block connects the clamping mechanisms.

[0005] In some embodiments, the clamping mechanism includes a hydraulic cylinder with an output end, a spiral groove on the output end, a sliding groove below the spiral groove on the output end, a rotating block on the output end, the output end being connected to the rotating block via the spiral groove, a sliding block below the rotating block, the output end being slidably connected to the sliding block via the sliding groove, and a pressure plate at the bottom of the output end.

[0006] In some embodiments, an inner rotating block is provided at the bottom of the output end, the output end is rotatably connected to the inner rotating block, and a pressure plate is provided at the bottom of the inner rotating block, the pressure plate being rotatably connected to the inner rotating block via a rotating pin.

[0007] In some embodiments, an outer plate is fixed to the bottom of the rotating block, an outer ring is fixed to the bottom of the outer plate, an inner plate is fixed to the bottom of the sliding block, an inner ring is fixed to the bottom of the inner plate, and a plurality of contact components are provided on the outer ring.

[0008] In some embodiments, the contact assembly includes a contact block, inner and outer connecting rods, and a connecting rod. There are two inner and outer connecting rods, which are symmetrically arranged on the upper and lower sides of the contact block. The tops of the inner and outer connecting rods are rotatably connected to the contact block via rotating pins, and the bottoms of the two inner and outer connecting rods are mounted on an outer ring via connecting rods.

[0009] In some embodiments, a cylinder is provided on the grinding disc, the cylinder is mounted on a connecting block, and the output end of the cylinder is fixedly connected to the grinding disc.

[0010] This utility model has at least the following beneficial effects: This invention uses a hydraulic cylinder to drive an inner and outer ring. The output end of the cylinder moves downward. When the bottom of the inner ring abuts against the grinding disc, the output end continues to descend. The spiral groove on the output end drives the rotating block to rotate, so that the outer ring maintains a constant distance from the grinding disc in the vertical direction while generating lateral rotation. Through the connecting rod, the contact block slides radially inward and cuts into the workpiece, adaptively clamping it around the workpiece. The pressure plate presses down on the top of the workpiece. The pressure plate can adjust its angle and position according to the surface contour of the workpiece, thus achieving flexible fixation of the workpiece.

[0011] This invention utilizes a contact block connected to an outer ring via elastically telescopic inner and outer connecting rods. During clamping, the contact block ensures uniform contact with the workpiece surface, preventing damage due to excessive localized pressure. Simultaneously, the rotating connection between the pressure plate and the inner rotating block allows for better adaptation to the workpiece surface shape during clamping, further guaranteeing the workpiece's flatness and quality, and reducing surface defects caused by improper clamping. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the half-section structure of this utility model; Figure 3 This is a schematic diagram of the pressing mechanism of this utility model; Figure 4 This is a schematic diagram of the clamping mechanism of this utility model; Figure 5 This is a schematic diagram of the inner ring connection of this utility model; Figure 6 This is a half-sectional structural diagram of the clamping mechanism of this utility model.

[0013] In the diagram: 1-Outer shell; 2-Pressing mechanism; 3-Grinding disc; 4-Rotating shaft; 5-Cylinder; 6-Clamping mechanism; 60-Sliding block; 61-Hydraulic cylinder; 62-Output end; 63-Rotating block; 64-Outer plate; 65-Inner plate; 66-Inner ring; 67-Outer ring; 68-Contact assembly; 681-Contact block; 682-Inner and outer connecting rods; 683-Connecting rod; 69-Pressure plate; 70-Inner rotating block; 7-Connecting block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0015] Please see Figure 1-4 6. This utility model provides a technical solution: a planar grinding fixing structure, including a housing 1, a rotating shaft 4 installed at the bottom of the housing 1, and a grinding disc 3 installed at the top of the rotating shaft 4, and further including: The pressing mechanism 2 is located inside the housing 1. The pressing mechanism 2 includes a clamping mechanism 6 and a connecting block 7. The clamping mechanism 6 adaptively clamps the workpiece placed on the grinding disc 3, and the connecting block 7 connects the clamping mechanisms 6 together. The outer shell 1 serves as the structural support base, and the rotating shaft 4 is installed at the bottom of the outer shell 1 to support and transmit the rotational motion of the grinding disc 3. The rotating shaft 4 is connected to the outer shell 1 through bearings to ensure that the grinding disc 3 can rotate freely around the shaft, providing basic motion for grinding. The clamping mechanism 6 includes a hydraulic cylinder 61, which has an output end 62. The output end 62 has a spiral groove, and a sliding groove is provided below the spiral groove. The output end 62 has a rotating block 63, which is connected to the rotating block 63 through the spiral groove. A sliding block 60 is provided below the rotating block 63, and the output end 62 is slidably connected to the sliding block 60 through the sliding groove. A pressure plate 69 is provided at the bottom of the output end 62. An inner rotating block 70 is provided at the bottom of the output end 62, and the output end 62 is rotatably connected to the inner rotating block 70. A pressure plate 69 is provided at the bottom of the inner rotating block 70, and the pressure plate 69 is rotatably connected to the inner rotating block 70 through a rotating pin. The pressing mechanism 2 adaptively fixes the workpiece through the clamping mechanism 6. The connecting block 7 ensures that the multiple clamping mechanisms 6 work together. The output end 62 of the hydraulic cylinder 61 cooperates with the rotating block 63 through the spiral groove, which converts the linear motion of the hydraulic cylinder 61 into the rotational motion of the rotating block 63. The slide groove of the output end 62 is slidably connected with the sliding block 60, so as to realize the radial movement of the sliding block 60 when the rotating block 63 rotates, and complete the multi-degree-of-freedom adjustment. The pressure plate 69 is connected to the inner rotating block 70 via a rotating pin. The inner rotating block 7063 is rotatably connected to the output end 62, so that the pressure plate 69 can adjust its angle according to the surface contour of the workpiece to achieve flexible contact and fixation. The bottom of the rotating block 63 is fixed with an outer plate 64, the bottom of the outer plate 64 is fixed with an outer ring 67, the bottom of the sliding block 60 is fixed with an inner plate 65, the bottom of the inner plate 65 is fixed with an inner ring 66, and a number of contact components 68 are provided on the outer ring 67. The contact assembly 68 includes a contact block 681, inner and outer connecting rods 682 and a connecting rod 683. There are two inner and outer connecting rods 682, which are symmetrically arranged on the upper and lower sides of the contact block 681. The top of the inner and outer connecting rods 682 is rotatably connected to the contact block 681 through a rotating pin, and the bottom of the two inner and outer connecting rods 682 is mounted on the outer ring 67 through the connecting rod 683. The fixed structure consists of a shell 1, a rotating shaft 4, a grinding disc 3, and a pressing mechanism 2. The pressing mechanism 2 includes a clamping mechanism 6 and a connecting block 7, which realizes adaptive clamping and synchronous movement of the workpiece. Example 2

[0016] Please see Figure 1-6 This utility model provides a technical solution: a planar grinding and fixing structure, including inner and outer connecting rods 682 which are elastic telescopic rods; The contact component 68 ensures uniform distribution of clamping force and adapts to different workpiece shapes. The inner and outer connecting rods 682 are elastic telescopic rods that provide buffering and self-adaptation capabilities. They are installed on the outer ring 67 via the connecting rod 683 and adjust their position as the rotating block 63 rotates to ensure uniform pressing of the workpiece surface. The hydraulic cylinder 61 drives the output end 62, and the spiral groove drives the rotating block 63 to rotate. When the rotating block 63 rotates, the sliding block 60 moves along the sliding groove, and the pressure plate 69 generates a downward clamping force. The inner and outer connecting rods 682 of the contact assembly 68 adjust the position of the contact block 681 to ensure uniform clamping of workpieces of different sizes and shapes. A cylinder 5 is provided on the grinding disc 3. The cylinder 5 is mounted on the connecting block 7, and the output end of the cylinder 5 is fixedly connected to the grinding disc 3. The cylinder 5 drives the grinding disc 3 to rise and fall, which facilitates the loading and unloading of workpieces. The cylinder 5 controls the extension and retraction of the piston rod through air pressure, which drives the grinding disc 3 to move vertically, so as to realize the rapid positioning and release of the workpiece. During the grinding process, the working position of the grinding disc 3 and the pressing mechanism 2 can be adjusted by opening or closing the cylinder 5, so as to prevent the accumulation of grinding debris during long-term processing, which would affect the normal operation of the device. By integrating helical drive and sliding connection, and with elastic contact component 68, the problem of poor adaptability of traditional fixtures is solved. The pressure plate 69 can adjust its angle and position according to the surface contour of the workpiece to improve grinding accuracy. The connecting block 7 ensures that the multiple clamping mechanisms 6 work synchronously and improves overall stability. This structure achieves flexible fixation and multi-degree-of-freedom adjustment of the workpiece through the combination of hydraulic drive and mechanical transmission, which significantly improves the stability and accuracy of the grinding process.

[0017] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A planar grinding fixing structure, comprising a housing (1), a rotating shaft (4) mounted on the bottom of the housing (1), and a grinding disc (3) mounted on the top of the rotating shaft (4), characterized in that: It also includes: The pressing mechanism (2) is located inside the housing (1). The pressing mechanism (2) includes a clamping mechanism (6) and a connecting block (7). The clamping mechanism (6) adaptively clamps the workpiece placed on the grinding disc (3). The connecting block (7) connects the clamping mechanisms (6) to each other.

2. The planar grinding fixing structure according to claim 1, characterized in that: The clamping mechanism (6) includes a hydraulic cylinder (61), the hydraulic cylinder (61) is provided with an output end (62), the output end (62) is provided with a spiral groove, the output end (62) is provided with a sliding groove below the spiral groove, the output end (62) is provided with a rotating block (63), the output end (62) is connected to the rotating block (63) through the spiral groove, the rotating block (63) is provided with a sliding block (60) below the rotating block (63), the output end (62) is slidably connected to the sliding block (60) through the sliding groove, and a pressure plate (69) is provided at the bottom of the output end (62).

3. The planar grinding fixing structure according to claim 2, characterized in that: The bottom of the output end (62) is provided with an inner rotating block (70), the output end (62) is rotatably connected to the inner rotating block (70), the bottom of the inner rotating block (70) is provided with a pressure plate (69), and the pressure plate (69) is rotatably connected to the inner rotating block (70) through a rotating pin.

4. The planar grinding and fixing structure according to claim 3, characterized in that: The rotating block (63) has an outer plate (64) fixed to its bottom, the outer plate (64) has an outer ring (67) fixed to its bottom, the sliding block (60) has an inner plate (65) fixed to its bottom, the inner plate (65) has an inner ring (66) fixed to its bottom, and the outer ring (67) has a plurality of contact components (68) provided on it.

5. The planar grinding fixing structure according to claim 4, characterized in that: The contact assembly (68) includes a contact block (681), inner and outer connecting rods (682) and a connecting rod (683). There are two inner and outer connecting rods (682), which are symmetrically arranged on the upper and lower sides of the contact block (681). The top of the inner and outer connecting rods (682) is rotatably connected to the contact block (681) through a rotating pin, and the bottom of the two inner and outer connecting rods (682) is installed on the outer ring (67) through the connecting rod (683).

6. The planar grinding fixing structure according to claim 5, characterized in that: The inner and outer connecting rods (682) are elastic telescopic rods.

7. The planar grinding fixing structure according to claim 1, characterized in that: A cylinder (5) is provided on the grinding disc (3). The cylinder (5) is mounted on the connecting block (7). The output end of the cylinder (5) is fixedly connected to the grinding disc (3).

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