Multi-station clamping device for machining ceramic surface

Abstract

The invention discloses a multi-station clamping device for machining a ceramic surface, and aims to provide a multi-station clamping device which is convenient to clamp, capable of realizing high-precision batch clamping of cylindrical ceramic workpieces and high in machining precision. The multi-station clamping device for machining the ceramic face can effectively solve the problem that due to clamping, the surface or the edge of the fragile ceramic causes microcracks or even overall cracking. The device comprises a base on which a bottom plate is fixed, and the upper surface of the bottom plate is a horizontal supporting surface; the clamping units are distributed side by side and comprise vertical plates fixed on the supporting surface; the wedge block assembly comprises a fixed wedge block fixed to the supporting face and a movable wedge block located between the fixed wedge block and the vertical plate, the two opposite side faces of the fixed wedge block and the movable wedge block are matched inclined wedge faces, and a strip-shaped hole penetrating through the upper surface and the lower surface of the movable wedge block is formed in the movable wedge block; the clamping bolt penetrates through the strip-shaped hole and is connected into the screw hole of the supporting surface; the movable clamping plate is fixed to the movable wedge block, and the side face, facing the movable clamping plate, of the vertical plate is a vertical datum plane.

Description

Technical Field

[0001] This invention relates to the field of ceramic processing technology, and specifically to a multi-station clamping device for processing ceramic surfaces. Background Technology

[0002] Ceramic materials, due to their excellent properties such as high hardness, high wear resistance, high temperature resistance, and corrosion resistance, are widely used in high-tech fields such as aerospace, precision instruments, semiconductors, and biomedicine. These fields place almost stringent requirements on the dimensional accuracy, geometric tolerances, and surface quality of key ceramic components. However, the inherent high brittleness and low fracture toughness of ceramic materials make them extremely susceptible to damage during machining, which places high demands on the clamping process.

[0003] Currently, in the finishing processes of ceramic surfaces (especially small, thin-walled parts), the existing clamping methods have obvious limitations, making it difficult to balance positioning accuracy, efficiency, and yield.

[0004] First, while precision clamps for single ceramic workpieces (such as precision spring collets and vacuum chucks) can achieve high single-piece positioning accuracy, they can only clamp one or a small number of workpieces at a time, resulting in low production efficiency and difficulty in meeting the needs of mass production. For example, Chinese Patent Publication No. CN116638210A, an invention entitled "A Ceramic Cutting Device for Convenient Clamping," includes a base with a clamping adjustment mechanism fixedly connected to the top center of the base, which also can only clamp one workpiece at a time. On the other hand, the concentrated stress generated by the clamping of metal collets can easily cause micro-cracks or even overall cracking on the surface or edges of brittle ceramics, leading to workpiece scrap and making it difficult to control the yield.

[0005] Secondly, while using adhesives or paraffin wax for fixing can avoid mechanical damage and allow for simultaneous processing of multiple parts, it introduces a series of new problems, such as cumbersome processes (coating, curing, processing, dissolving, cleaning), long production cycles, high energy consumption, and the risk of chemical pollution. Furthermore, the adhesive may soften when heated during processing, leading to decreased positioning accuracy.

[0006] Furthermore, while manually arranging workpieces and using spacers and screws for positioning can achieve a certain batch clamping, its positioning accuracy heavily depends on the operator's experience, resulting in large cumulative errors and making it impossible to guarantee the consistency of batch workpieces.

[0007] In summary, existing ceramic workpiece clamping devices often struggle to balance positioning accuracy and efficiency, as well as mass production and workpiece protection. With the increasing demand for ceramic parts from high-end equipment, developing a dedicated device capable of both high-precision mass clamping and ease of operation has become an urgent need to drive technological upgrades in related industries. Summary of the Invention

[0008] The purpose of this invention is to provide a multi-station clamping device for processing ceramic surfaces that is not only convenient to clamp and operate, enabling high-precision batch clamping of cylindrical ceramic workpieces, but also effectively improves the problem of micro-cracks or even overall cracking caused by clamping on brittle ceramic surfaces or edges, leading to workpiece scrap.

[0009] The technical solution of this invention is: A multi-station clamping device for processing ceramic surfaces includes: A base on which a bottom plate is fixed, the upper surface of which is a horizontal support surface; A plurality of clamping units arranged side by side, comprising: The upright plate is fixed to the supporting surface; The wedge assembly includes a fixed wedge fixed on the support surface and a movable wedge located between the fixed wedge and the vertical plate. The two opposite sides of the fixed wedge and the movable wedge are mutually matching inclined wedge surfaces. The movable wedge is provided with a strip hole that penetrates the upper and lower surfaces of the movable wedge. The clamping bolt passes through the strip hole and into the screw hole connected to the support surface; A movable clamping plate is fixed to the movable wedge block on the side facing the vertical plate. The side of the vertical plate facing the movable clamping plate is a vertical reference plane, and the vertical reference planes of each clamping unit are parallel. Both the vertical plate and the movable clamping plate are made of plastic. The specific use of a multi-station clamping device for machining ceramic surfaces according to this solution is as follows. Cylindrical ceramic workpieces are fixed within clamping units, with each unit holding one workpiece, enabling batch clamping to meet the needs of mass production. Taking one clamping unit as an example, the cylindrical ceramic workpiece is supported on a horizontal support surface by its outer circumference, which abuts against the vertical reference surface of the upright plate. Next, the clamping bolts are tightened, pressing the moving wedge downwards. During this process, the inclined wedge surfaces of the fixed and moving wedges cause the fixed wedge to move the moving clamping plate closer to the corresponding upright plate, thus clamping and fixing the cylindrical ceramic workpiece between the upright plate and the moving clamping plate of the clamping unit. This clamping operation is convenient and quick. Simultaneously, the ceramic workpiece is precisely positioned using the horizontal support surface and the vertical reference surface, ensuring that the axis of the ceramic workpiece's inner hole is parallel to both the horizontal support surface and the vertical reference surface, thereby accurately positioning the ceramic workpiece.

[0010] On the other hand, compared with metal clamping parts, the clamping unit of this solution uses a vertical plate and a moving clamping plate to clamp and fix the ceramic workpiece. The vertical plate and the moving clamping plate are made of plastic. In this way, the concentrated stress generated when clamping the ceramic workpiece can be reduced, thereby effectively improving the problem of micro-cracks or even overall cracking caused by clamping on the brittle ceramic surface or edge, which leads to the scrapping of the workpiece.

[0011] As a preferred option, it also includes: A horizontal slide rail is provided on the base, and each clamping unit is distributed along the slide rail in sequence, with the vertical reference plane perpendicular to the slide rail; The transverse slide block slides along the transverse slide rail and is equipped with a locking screw; The longitudinal sliding slide is mounted on the transverse sliding slide along the water direction, and the sliding direction of the longitudinal sliding slide is parallel to the vertical reference plane; A dial indicator or micrometer is fixed on the longitudinal sliding block. In this way, the levelness of the inner hole axis of the ceramic workpiece clamped in each clamping unit can be detected using the dial indicator or micrometer on the longitudinal sliding block. The following description takes the clamped ceramic workpiece in one clamping unit as an example. Loosen the locking screw, and move the longitudinal slide along the transverse slide rail to the ceramic workpiece of the corresponding clamping unit through the transverse slide. Align the probe of the dial indicator or micrometer on the longitudinal slide with the inner hole of the ceramic workpiece. Then tighten the locking screw to lock and fix the transverse slide on the base. Next, the probe of the dial indicator or micrometer on the longitudinal slide is moved into the inner hole of the ceramic workpiece, and the probe of the dial indicator or micrometer is placed against the inner hole. Then, the dial indicator or micrometer is moved by the longitudinal slide. During this process, the changes in the dial indicator or micrometer readings are observed. If the maximum difference between the maximum and minimum readings is within the set range, it indicates that the horizontality of the inner hole axis of the ceramic workpiece clamped in the clamping unit is qualified. If the maximum difference between the maximum and minimum readings exceeds the set range, it indicates that the horizontality of the inner hole axis of the ceramic workpiece clamped in the clamping unit is unqualified, and the installation position of the ceramic workpiece needs to be adjusted. In this way, the installation accuracy of the ceramic workpiece can be measured before processing, further ensuring the installation accuracy of the ceramic workpiece, thereby improving the processing accuracy of the ceramic workpiece.

[0012] Preferably, the dial indicator or dial gauge is a lever dial indicator or dial gauge, or the dial indicator or dial gauge is an internal diameter dial indicator or dial gauge, which is used to detect the levelness of the inner hole axis of the cylindrical ceramic workpiece fixed on the clamping unit.

[0013] Preferably, the longitudinal sliding slide is equipped with a bracket and an upward-facing mounting slot. The dial indicator or micrometer is positioned within the mounting slot. The bracket is equipped with a locking bolt, which is located above the mounting slot to secure the dial indicator or micrometer within the mounting slot. This facilitates the fixed installation of the dial indicator or micrometer.

[0014] Preferably, the system also includes an adjustment component to adjust the levelness of the inner hole axis of the cylindrical ceramic workpiece mounted on the clamping unit. Each adjustment component corresponds to one clamping unit and includes two vertical screw holes on the base plate. These two vertical screw holes are located at the center between the upright plate and the movable clamping plate of the corresponding clamping unit, and are sequentially distributed along the intersection of the support surface and the vertical reference plane. Each vertical screw hole contains an adjustment bolt. Before processing the ceramic workpiece, the levelness of the inner hole axis of the cylindrical ceramic workpiece fixed on the clamping unit is checked using a dial indicator or micrometer. If the levelness of the inner hole axis of the ceramic workpiece clamped in the clamping unit is unqualified, the corresponding adjustment component is used to adjust the levelness of the inner hole axis of the ceramic workpiece clamped in the clamping unit. Specifically… First, loosen the clamping bolts appropriately. Second, by rotating one of the adjusting bolts in the adjusting assembly, the adjusting bolt is moved upward to push one end of the cylindrical ceramic workpiece upward, thereby adjusting the horizontality of the inner hole axis of the cylindrical ceramic workpiece. Third, the horizontality of the inner hole axis of the cylindrical ceramic workpiece fixed on the clamping unit is checked using a dial indicator or micrometer. If the horizontality of the inner hole axis of the ceramic workpiece is qualified, the clamping bolts are tightened to clamp and fix the ceramic workpiece. If the horizontality of the inner hole axis of the ceramic workpiece is not qualified, the process returns to step two until the horizontality of the inner hole axis of the ceramic workpiece is qualified. In this way, the installation accuracy of the ceramic workpiece can be measured before processing, further ensuring the installation accuracy of the ceramic workpiece and thus improving the processing accuracy of the ceramic workpiece. This effectively avoids the problem of unqualified installation accuracy of the ceramic workpiece leading to unqualified surface processing accuracy of the subsequent ceramic workpiece, resulting in rework or even scrapping of the ceramic workpiece.

[0015] Preferably, the movable clamping plate includes an inner clamping plate, an outer clamping plate, and an elastic rubber layer disposed between and connecting the inner and outer clamping plates. The inner clamping plate is fixed on the movable wedge block on the side facing the vertical plate. Thus, during the process of tightening the clamping bolts and clamping and fixing the ceramic workpiece through the vertical plate and movable clamping plate of the clamping unit, on the one hand, the precise positioning of the ceramic workpiece via the horizontal support surface and the vertical reference surface is not affected; on the other hand, the elastic deformation of the elastic rubber layer further avoids rigid compression on the ceramic workpiece, further reducing the concentrated stress generated when clamping the ceramic workpiece. This effectively improves the problem of micro-cracks or even overall cracking caused by clamping on the brittle ceramic surface or edges, leading to workpiece scrap.

[0016] Preferably, one side of the base plate is a vertical limiting surface, which is perpendicular to the vertical reference surface. For cylindrical ceramic workpieces with an annular flange at one end, the annular flange can also be used to abut against the vertical limiting surface to position the ceramic workpiece axially within its inner hole, further improving the installation accuracy of the ceramic workpiece.

[0017] Preferably, the side of the moving clamp facing the upright plate is parallel to the vertical reference plane.

[0018] Preferably, the side of the movable clamping plate facing the vertical plate is a clamping ramp, with the upper part of the clamping ramp sloping towards the vertical plate, and the intersection line of the clamping ramp, the support surface, and the vertical reference plane is parallel. Thus, after the ceramic workpiece is clamped and fixed between the vertical plate and the movable clamping plate of the clamping unit, the cylindrical ceramic workpiece will be positioned in a space formed between the horizontal support surface, the vertical reference plane, and the clamping ramp. The clamping ramp can restrict the upward movement of the ceramic workpiece, preventing it from loosening during processing and further improving the clamping stability of the ceramic workpiece.

[0019] Preferably, the upright plate is fixed to the support surface of the base plate by bolts, the fixed wedge block is fixed to the support surface of the base plate by bolts, the base has a magnetic attraction element, and the base has grip handles on opposite sides.

[0020] The beneficial effects of this invention are: Firstly, each clamping unit can clamp and fix one ceramic workpiece, and the clamping operation is convenient, thereby realizing the batch clamping of ceramic workpieces, which meets the needs of mass production of ceramic workpieces.

[0021] Secondly, the ceramic workpiece in each clamping unit can be precisely positioned by using the horizontal support surface and the vertical reference surface.

[0022] Third, it can reduce the concentrated stress generated when clamping ceramic workpieces, thereby effectively improving the problem of microcracks or even overall cracking caused by clamping on the brittle ceramic surface or edge, leading to the scrapping of the workpiece. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a multi-station clamping device for processing ceramic surfaces according to the present invention.

[0024] Figure 2 This is a front view of a multi-station clamping device for processing ceramic surfaces according to the present invention.

[0025] Figure 3 This is a side sectional view of a multi-station clamping device for processing ceramic surfaces according to the present invention.

[0026] In the picture: Base 1; Base plate 2, support surface 2.1; Clamping unit 3, upright plate 3.1, fixed wedge block 3.2, moving wedge block 3.3, moving clamping plate 3.4, strip hole 3.5, inclined wedge surface 3.6, vertical reference surface 3.7; Horizontal slide rail 4; Horizontal slide block 5; Longitudinal slide block 6; Percentage Table 7; 8 brackets; Locking bolt 9; 10 ceramic workpieces; Adjustment component 11, adjustment bolt 11.1, handle 11.2. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Specific Implementation Example 1, such as Figure 1 , Figure 2 , Figure 3 As shown, a multi-station clamping device for processing ceramic surfaces includes a base 1, a bottom plate 2, and several clamping units 3 arranged side by side. The bottom plate 2 is fixed on the base 1, and the upper surface of the bottom plate 2 is a horizontal support surface 2.1.

[0028] The clamping unit 3 includes a vertical plate 3.1, a wedge assembly, clamping bolts, and a movable clamping plate 3.4.

[0029] The upright plate 3.1 is fixed to the supporting surface 2.1. The upright plate 3.1 is made of plastic material, such as polyurethane or engineering plastics.

[0030] The wedge assembly includes a fixed wedge 3.2 fixed on the support surface 2.1 and a movable wedge 3.3 located between the fixed wedge 3.2 and the vertical plate 3.1. The opposite sides of the fixed wedge 3.2 and the movable wedge 3.3 are mutually mating inclined wedge surfaces 3.6, with the upper part of the inclined wedge surface 3.6 inclined away from the vertical plate 3.1. The movable wedge 3.3 is provided with a strip hole 3.5 penetrating the upper and lower surfaces of the movable wedge 3.3.

[0031] The clamping bolt passes through the strip hole 3.5 and connects to the screw hole in the support surface 2.1. The screw holes in the support surface 2.1 are vertically distributed.

[0032] The movable clamping plate 3.4 is fixed to the movable wedge block 3.3 on the side facing the vertical plate 3.1. The movable clamping plate 3.4 is made of plastic material, such as polyurethane or engineering plastic. The side of the vertical plate 3.1 facing the movable clamping plate 3.4 is a vertical reference surface 3.7, and the length direction of the shaped hole is perpendicular to the vertical reference surface 3.7. The vertical reference surfaces 3.7 of each clamping unit 3 are parallel.

[0033] The specific use of the multi-station clamping device for processing ceramic surfaces in this embodiment is as follows. A cylindrical ceramic workpiece 10 is fixed within a clamping unit 3. Each clamping unit 3 clamps and fixes one ceramic workpiece 10, thus enabling batch clamping of the ceramic workpieces 10 to meet the needs of mass production. Taking one clamping unit 3 as an example, the cylindrical ceramic workpiece 10 is supported on a horizontal support surface 2.1 by its outer circumferential surface, and the outer circumferential surface of the ceramic workpiece 10 abuts against the vertical reference surface 3.7 of the upright plate 3.1. Next, the clamping bolts are tightened, pressing the moving wedge block 3.3 downwards. During this process, under the action of the inclined wedge surface 3.6 of the fixed wedge block 3.2 and the moving wedge block 3.3, the fixed wedge block 3.2 drives the moving clamping plate 3.4 closer to the corresponding upright plate 3.1, thereby clamping the cylindrical ceramic workpiece 10. The clamping unit 3 is fixed between the vertical plate 3.1 and the movable clamping plate 3.4, making the clamping operation convenient and quick. At the same time, the ceramic workpiece 10 is precisely positioned by the horizontal support surface 2.1 and the vertical reference surface 3.7, so that the axis of the inner hole of the ceramic workpiece 10 is parallel to both the horizontal support surface 2.1 and the vertical reference surface 3.7 (that is, the axis of the inner hole of the cylindrical ceramic workpiece 10 clamped and fixed in the clamping unit 3 is horizontally distributed and parallel to the vertical reference surface 3.7), thereby accurately positioning the ceramic workpiece 10.

[0034] On the other hand, compared with metal clamping parts, the clamping unit 3 of this solution uses a vertical plate 3.1 and a movable clamping plate 3.4 to clamp and fix the ceramic workpiece 10. The vertical plate 3.1 and the movable clamping plate 3.4 are made of plastic. In this way, the concentrated stress generated when clamping the ceramic workpiece 10 can be reduced, thereby effectively improving the problem of micro-cracks or even overall cracking caused by clamping on the brittle ceramic surface or edge, which leads to the scrapping of the workpiece.

[0035] Specific embodiment two, such as Figure 1 , Figure 2 , Figure 3 As shown, a multi-station clamping device for processing ceramic surfaces includes a base 1, a base plate 2, several clamping units 3 arranged side by side, a transverse slide rail 4, a transverse slide block 5, a longitudinal slide block 6, and a dial indicator 7 or a micrometer indicator.

[0036] The base plate 2 is fixed on the base 1. In this embodiment, the base plate 2 is located above the base 1, and several supporting members are provided between the base plate 2 and the base 1. The base plate 2 is fixed on the base 1 by the supporting members. The upper surface of the base plate 2 is a horizontal supporting surface 2.1.

[0037] The number of clamping units 3 can be set from 2 to 10 as needed. The multi-station clamping device shown in the figure has three clamping units 3. The clamping unit 3 includes a vertical plate 3.1, a wedge block assembly, clamping bolts, and a movable clamping plate 3.4.

[0038] The upright plate 3.1 is fixed to the supporting surface 2.1. The upright plate 3.1 is made of plastic material, such as polyurethane or engineering plastic. In this embodiment, the upright plate 3.1 is fixed to the supporting surface 2.1 of the base plate 2 by bolts, which facilitates the installation and removal of the upright plate 3.1. Of course, the upright plate 3.1 can also be fixed to the supporting surface 2.1 of the base plate 2 by welding or riveting.

[0039] The wedge assembly includes a fixed wedge 3.2 fixed on the support surface 2.1 and a movable wedge 3.3 located between the fixed wedge 3.2 and the vertical plate 3.1. In this embodiment, the fixed wedge 3.2 is fixed to the support surface 2.1 of the base plate 2 by bolts, which facilitates the installation and removal of the fixed wedge 3.2. Of course, the fixed wedge 3.2 can also be fixed to the support surface 2.1 of the base plate 2 by welding or riveting. The opposite sides of the fixed wedge 3.2 and the movable wedge 3.3 are mutually mating inclined wedge surfaces 3.6, and the upper part of the inclined wedge surface 3.6 is inclined away from the vertical plate 3.1. The movable wedge 3.3 is provided with a strip hole 3.5 penetrating the upper and lower surfaces of the movable wedge 3.3.

[0040] The clamping bolt passes through the strip-shaped hole 3.5 and connects to the screw hole in the support surface 2.1. The screw holes in the support surface 2.1 are vertically distributed. In this embodiment, the clamping bolts are vertically distributed, and the upper end of the clamping bolt is provided with a grip handle or grip wheel, which makes it convenient for the operator to tighten or loosen the clamping bolt by gripping the grip handle or grip wheel.

[0041] The movable clamping plate 3.4 is fixed to the movable wedge block 3.3 on the side facing the vertical plate 3.1. In this embodiment, the movable clamping plate 3.4 is fixed to the movable wedge block 3.3 by bolts, which facilitates the installation and removal of the movable clamping plate 3.4. Of course, the movable clamping plate 3.4 can also be fixed to the movable wedge block 3.3 by welding or riveting. The movable clamping plate 3.4 is made of plastic material, such as polyurethane or engineering plastic. The side of the vertical plate 3.1 facing the movable clamping plate 3.4 is a vertical reference surface 3.7, and the length direction of the shaped hole is perpendicular to the vertical reference surface 3.7. The vertical reference surfaces 3.7 of each clamping unit 3 are parallel.

[0042] In one example, such as Figure 1 , Figure 2 As shown, the side of the moving clamp 3.4 facing the vertical plate 3.1 is parallel to the vertical reference plane 3.7.

[0043] In another example, the side of the movable clamping plate 3.4 facing the vertical plate 3.1 is a clamping ramp (not shown in the figure). The upper part of the clamping ramp slopes towards the vertical plate 3.1, and the intersection line of the clamping ramp, the support surface 2.1, and the vertical reference surface 3.7 is parallel. Thus, after the ceramic workpiece 10 is clamped and fixed between the vertical plate 3.1 and the movable clamping plate 3.4 of the clamping unit 3, the cylindrical ceramic workpiece 10 will be located in a space between the horizontal support surface 2.1, the vertical reference surface 3.7, and the clamping ramp. The clamping ramp can restrict the ceramic workpiece 10 from loosening upwards, preventing the ceramic workpiece 10 from loosening upwards during processing, and further improving the clamping stability of the ceramic workpiece 10.

[0044] The transverse slide rail 4 is fixedly mounted on the base 1. Each clamping unit 3 is distributed sequentially along the slide rail, and the vertical reference plane 3.7 is perpendicular to the slide rail. The transverse slide block 5 slides along the transverse slide rail 4 and is equipped with locking screws to secure it to the base 1. The longitudinal slide block 6 slides along the horizontal direction on the transverse slide block 5, and the sliding direction of the longitudinal slide block 6 is parallel to the vertical reference plane 3.7.

[0045] A dial indicator 7 or a micrometer is fixed on the longitudinal sliding block 6. The dial indicator 7 or the micrometer is used to check the levelness of the inner hole axis of the cylindrical ceramic workpiece 10 fixed on the clamping unit 3.

[0046] In one example, the dial indicator 7 or the thousandth indicator is a lever dial indicator or a lever thousandth indicator.

[0047] In another example, the dial indicator 7 or the dial gauge is an inside diameter dial indicator or an inside diameter dial gauge.

[0048] The specific use of the multi-station clamping device for processing ceramic surfaces in this embodiment is as follows. Step 1: Fix the base 1 onto the worktable of the CNC machine tool, for example, by means of bolts or magnetic attraction, and align the position of the base 1; thereby fixing the multi-station clamping device onto the worktable of the CNC machine tool.

[0049] In one example, the base 1 has a magnetic element. This example base 1 is suitable for use on a CNC machine tool worktable that is magnetic, and the base 1 is conveniently attached to the worktable by the magnetic element. The magnetic element is an iron component or a magnet; for example, the base 1 may be entirely made of iron, or several iron components may be embedded in the base 1, or several magnets may be embedded in the base 1.

[0050] In another example, the base 1 is fixed to the workbench by bolts.

[0051] Step two involves fixing the cylindrical ceramic workpiece 10 within the clamping unit 3. Each clamping unit 3 clamps and fixes one ceramic workpiece 10, thus achieving batch clamping of the ceramic workpieces 10 to meet the needs of mass production. The following description uses one clamping unit 3 as an example. A cylindrical ceramic workpiece 10 is supported on a horizontal support surface 2.1 by its outer peripheral surface, with the outer peripheral surface of the ceramic workpiece 10 abutting against the vertical reference surface 3.7 of the upright plate 3.1. Next, the clamping bolts are tightened, pressing the movable wedge block 3.3 downwards. During this process, under the action of the inclined wedge surface 3.6 of the fixed wedge block 3.2 and the movable wedge block 3.3, the fixed wedge block 3.2 drives the movable clamping plate 3.4 closer to the corresponding upright plate 3.1, thereby clamping and fixing the cylindrical ceramic workpiece 10 to the clamping unit 3. The clamping operation between the upright plate 3.1 and the movable clamping plate 3.4 is convenient and quick. At the same time, the ceramic workpiece 10 is precisely positioned by the horizontal support surface 2.1 and the vertical reference surface 3.7, so that the axis of the inner hole of the ceramic workpiece 10 is parallel to both the horizontal support surface 2.1 and the vertical reference surface 3.7 (that is, the axis of the inner hole of the cylindrical ceramic workpiece 10 clamped and fixed in the clamping unit 3 is horizontally distributed and parallel to the vertical reference surface 3.7), thereby accurately positioning the ceramic workpiece 10.

[0052] On the other hand, compared with metal clamping parts, the clamping unit 3 of this solution uses a vertical plate 3.1 and a movable clamping plate 3.4 to clamp and fix the ceramic workpiece 10. The vertical plate 3.1 and the movable clamping plate 3.4 are made of plastic. In this way, the concentrated stress generated when clamping the ceramic workpiece 10 can be reduced, thereby effectively improving the problem of micro-cracks or even overall cracking caused by clamping on the brittle ceramic surface or edge, which leads to the scrapping of the workpiece.

[0053] Step three: After each ceramic workpiece 10 is fixed in its corresponding clamping unit 3, the horizontality of the inner hole axis of each ceramic workpiece 10 clamped in each clamping unit 3 is checked using a dial indicator 7 or a micrometer on the longitudinal slide block 6. The following description uses one example of a ceramic workpiece 10 clamped in one of the clamping units 3. Loosen the locking screw, and move the longitudinal slide 6 along the transverse slide rail 4 to the ceramic workpiece 10 of the corresponding clamping unit 3 through the transverse slide 5, so that the probe of the dial indicator 7 or micrometer on the longitudinal slide 6 is aligned with the inner hole of the ceramic workpiece 10. Then tighten the locking screw to lock and fix the transverse slide 5 on the base 1. Next, the probe of the dial indicator 7 or micrometer is moved into the inner hole of the ceramic workpiece 10 by the longitudinal slide 6, and the probe of the dial indicator 7 or micrometer is placed against the inner hole. Then, the dial indicator 7 or micrometer is moved by the longitudinal slide 6. During this process, the changes in the readings of the dial indicator 7 or micrometer are observed. If the maximum value of the difference between the maximum and minimum readings is within the set range, it indicates that the horizontality of the inner hole axis of the ceramic workpiece 10 clamped and fixed in the clamping unit 3 is qualified. If the maximum value of the difference between the maximum and minimum readings exceeds the set range, it indicates that the horizontality of the inner hole axis of the ceramic workpiece 10 clamped and fixed in the clamping unit 3 is unqualified, and the installation position of the ceramic workpiece 10 needs to be adjusted. In this way, the installation accuracy of the ceramic workpiece 10 can be measured before processing, further ensuring the installation accuracy of the ceramic workpiece 10, thereby improving the processing accuracy of the ceramic workpiece 10.

[0054] Step four: Ceramic workpiece 10 is processed. The CNC machine tool uses the grinding wheel or polishing wheel on the spindle to perform grinding, lapping and other finishing work on the designated positions of the ceramic workpiece 10 in each clamping unit 3 in sequence; or it can perform grinding, lapping and other finishing work on the designated positions of the ceramic workpiece 10 in each clamping unit 3 at the same time; after the processing is completed, the clamping bolts of each clamping unit 3 are loosened and each ceramic workpiece 10 is taken out.

[0055] In this embodiment, grip handles are provided on opposite sides of the base 1.

[0056] In this embodiment, the base plate 2 is made of plastic, such as polyurethane or engineering plastics. Of course, the base plate 2 can also be made of metal.

[0057] Furthermore, such as Figure 2 , Figure 3 As shown, a multi-station clamping device for processing ceramic surfaces also includes an adjustment assembly 11, which corresponds one-to-one with the clamping unit 3. The adjustment assembly 11 includes two vertical screw holes on the base plate 2, penetrating the upper and lower surfaces of the base plate 2. The two vertical screw holes are located in the middle between the upright plate 3.1 and the movable clamping plate 3.4 of the corresponding clamping unit 3, and are sequentially distributed along the intersection of the support surface 2.1 and the vertical reference surface 3.7. Each vertical screw hole contains an adjusting bolt 11.1. The adjustment assembly 11 is used to adjust the horizontality of the inner hole axis of the cylindrical ceramic workpiece 10 mounted on the corresponding clamping unit 3. Specifically, In step three, the horizontality of the inner hole axis of the cylindrical ceramic workpiece 10 fixed on the clamping unit 3 is checked using a dial indicator 7 or a micrometer. If the horizontality of the inner hole axis of the ceramic workpiece 10 clamped in the clamping unit 3 is unqualified, the horizontality of the inner hole axis of the ceramic workpiece 10 clamped in the clamping unit 3 is adjusted using the corresponding adjustment component 11. Specifically, First, loosen the clamping bolts appropriately. Second, by rotating one of the adjusting bolts 11.1 in the adjusting assembly 11, the adjusting bolt 11.1 is moved upward to push one end of the cylindrical ceramic workpiece 10 upward, thereby adjusting the horizontality of the inner hole axis of the cylindrical ceramic workpiece 10. Third, the horizontality of the inner hole axis of the cylindrical ceramic workpiece 10 fixed on the clamping unit 3 is checked using a dial indicator 7 or a micrometer. If the horizontality of the inner hole axis of the ceramic workpiece 10 is qualified, the clamping bolts are tightened to clamp and fix the ceramic workpiece 10. If the horizontality of the inner hole axis of the ceramic workpiece 10 is not qualified, the process returns to step two until the horizontality of the inner hole axis of the ceramic workpiece 10 is qualified. Once the horizontality of the inner hole axis of the ceramic workpiece 10 clamped and fixed in the clamping unit 3 is qualified, the processing of the ceramic workpiece 10 in step four is performed. In this way, the installation accuracy of the ceramic workpiece 10 can be measured before processing, further ensuring the installation accuracy of the ceramic workpiece 10, thereby improving the processing accuracy of the ceramic workpiece 10. This effectively avoids the problem that the subsequent surface processing accuracy of the ceramic workpiece 10 is unqualified due to unqualified installation accuracy, resulting in rework or even scrapping of the ceramic workpiece 10.

[0058] In this embodiment, one of the two vertical screw holes of the same adjustment component 11 is closer to one side of the base plate, and the other vertical screw hole is closer to the other side of the base plate.

[0059] In this embodiment, the upper end face of the adjusting bolt 11.1 is flat, and the lower end of the adjusting bolt 11.1 is located on the handle 11.2, which is situated between the substrate and the base plate 2. Thus, the adjusting bolt 11.1 can be rotated via the handle 11.2, facilitating the actual adjustment of the horizontality of the inner hole axis of the ceramic workpiece 10.

[0060] Furthermore, one side of the base plate 2 is a vertical limiting surface, which is perpendicular to the vertical reference surface 3.7. For cylindrical ceramic workpieces 10 with an annular flange at one end, the annular flange can also be used to abut against the vertical limiting surface to position the ceramic workpiece 10 axially within its inner hole, thereby further improving the installation accuracy of the ceramic workpiece 10.

[0061] Furthermore, such as Figure 1 As shown, the longitudinal sliding slide 6 is provided with a bracket 8 and an upward-facing mounting groove, which extends through the longitudinal sliding slide 6 along its sliding direction. In this embodiment, the mounting groove is V-shaped. A dial indicator 7 or a micrometer indicator is positioned within the mounting groove. A locking bolt 9 is provided on the bracket, located above the mounting groove. The locking bolt secures the dial indicator 7 or micrometer indicator within the mounting groove. This facilitates the fixed installation of the dial indicator 7 or micrometer indicator.

[0062] In this embodiment, the bracket is a gate-shaped bracket, the locking bolts are vertically distributed, and the upper end of the locking bolt is provided with a gripping part.

[0063] Furthermore, the moving clamp 3.4 is either an integral structure or a modular combination structure.

[0064] In one embodiment, the movable clamping plate 3.4 is an integral structure, that is, the movable clamping plate 3.4 is a single piece of plastic plate.

[0065] In another embodiment, the movable clamping plate 3.4 is a split assembly structure (not shown in the figure). Specifically, the movable clamping plate 3.4 includes an inner clamping plate, an outer clamping plate, and an elastic rubber layer disposed between and connecting the inner and outer clamping plates. The inner clamping plate is fixed on the movable wedge block 3.3 on the side facing the vertical plate 3.1. In this way, during the process of clamping and fixing the ceramic workpiece 10 by locking the clamping bolts and clamping it with the vertical plate 3.1 and the movable clamping plate 3.4 of the clamping unit 3, on the one hand, it will not affect the accurate positioning of the ceramic workpiece 10 through the horizontal support surface 2.1 and the vertical reference surface 3.7; on the other hand, the elastic deformation of the elastic rubber layer can further avoid the rigid compression of the ceramic workpiece 10, further reduce the concentrated stress generated when clamping the ceramic workpiece 10, thereby effectively improving the problem of microcracks or even overall cracking caused by clamping on the brittle ceramic surface or edge, which leads to the scrapping of the workpiece.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A multi-station clamping device for processing ceramic surfaces, characterized in that, include: A base on which a bottom plate is fixed, the upper surface of which is a horizontal support surface; A plurality of clamping units arranged side by side, comprising: The upright plate is fixed to the supporting surface; The wedge assembly includes a fixed wedge fixed on the support surface and a movable wedge located between the fixed wedge and the vertical plate. The two opposite sides of the fixed wedge and the movable wedge are mutually matching inclined wedge surfaces. The movable wedge is provided with a strip hole that penetrates the upper and lower surfaces of the movable wedge. The clamping bolt passes through the strip hole and into the screw hole connected to the support surface; The movable clamping plate is fixed on the movable wedge block on the side facing the vertical plate. The side of the vertical plate facing the movable clamping plate is a vertical reference plane, and the vertical reference planes of each clamping unit are parallel. The vertical plate and the movable clamping plate are made of plastic.

2. The multi-station clamping device for processing ceramic surfaces according to claim 1, characterized in that it further... include: A horizontal slide rail is provided on the base, and each clamping unit is distributed along the slide rail in sequence, with the vertical reference plane perpendicular to the slide rail; The transverse slide block slides along the transverse slide rail and is equipped with a locking screw; The longitudinal sliding slide is mounted on the transverse sliding slide along the water direction, and the sliding direction of the longitudinal sliding slide is parallel to the vertical reference plane; A dial indicator or micrometer is fixed on a longitudinal sliding block.

3. The multi-station clamping device for processing ceramic surfaces according to claim 2, characterized in that, The dial indicator or dial gauge is a lever dial indicator or a dial gauge, or the dial indicator or dial gauge is an inner diameter dial indicator or a dial gauge. The dial indicator or dial gauge is used to detect the levelness of the inner hole axis of the cylindrical ceramic workpiece fixed on the clamping unit.

4. A multi-station clamping device for processing ceramic surfaces according to claim 2 or 3, characterized in that, The longitudinal sliding block is provided with a bracket and an upward-facing mounting groove. The dial indicator or micrometer is positioned in the mounting groove. The bracket is provided with a locking bolt, which is located above the mounting groove to lock and fix the dial indicator or micrometer in the mounting groove.

5. A multi-station clamping device for processing ceramic surfaces according to claim 1, 2, or 3, characterized in that, It also includes an adjustment component to adjust the horizontality of the inner hole axis of the cylindrical ceramic workpiece mounted on the clamping unit. The adjustment component corresponds to the clamping unit one by one and includes two vertical screw holes set on the base plate. The two vertical screw holes are located in the middle between the upright plate and the moving clamping plate of the corresponding clamping unit, and the two vertical screw holes are distributed sequentially along the intersection of the support surface and the vertical reference surface. Each vertical screw hole is provided with an adjustment bolt.

6. A multi-station clamping device for processing ceramic surfaces according to claim 1, 2, or 3, characterized in that, The movable clamping plate includes an inner clamping plate, an outer clamping plate, and an elastic rubber layer disposed between the inner clamping plate and the outer clamping plate and connecting the inner clamping plate and the outer clamping plate. The inner clamping plate is fixed on the movable wedge block on the side facing the vertical plate.

7. A multi-station clamping device for processing ceramic surfaces according to claim 1, 2, or 3, characterized in that, One side of the base plate is a vertical limiting surface, which is perpendicular to the vertical reference surface.

8. A multi-station clamping device for processing ceramic surfaces according to claim 1, 2, or 3, characterized in that, The side of the moving clamp plate facing the vertical plate is parallel to the vertical reference plane.

9. A multi-station clamping device for processing ceramic surfaces according to claim 1, 2, or 3, characterized in that, The side of the movable clamp plate facing the vertical plate is a pressing slope. The upper part of the pressing slope is inclined towards the vertical plate, and the intersection line of the pressing slope and the supporting surface is parallel to the vertical reference plane.

10. A multi-station clamping device for processing ceramic surfaces according to claim 1, 2, or 3, characterized in that, The upright plate is fixed to the support surface of the base plate by bolts, the fixed wedge block is fixed to the support surface of the base plate by bolts, the base has a magnetic attraction element, and the base has grip handles on opposite sides.

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