Clamping tool and machining table

Abstract

This invention relates to the field of fixture technology, and provides a fixture and machining table. The fixture has a base plate with a first insertion hole in the center. Multiple spacers are spaced around the axis of the first insertion hole, forming a space for placing the workpiece. The spacers are fixed relative to the base plate and can support the flange structure along the axial direction of the first insertion hole, so that the other axial end of the workpiece is spaced apart from the base plate. A cover plate is located on the side of the workpiece facing away from the spacers, and is fixed to the base plate by a first threaded fastener. The cover plate has a clearance groove, allowing a portion of the flange structure to be exposed along the axial direction of the first insertion hole. This avoids the axial end face of the workpiece from being squeezed and deformed against the base plate during machining. The workpiece's surface to be machined, i.e., its flange structure, is supported by multiple spacers, reducing its suspension length and preventing significant swaying during machining, which would affect machining accuracy.

Description

Technical Field

[0001] This invention relates to the field of fixture technology, and in particular to a fixture tooling and processing table. Background Technology

[0002] Generally, workpieces need to be clamped and fixed during machining to maintain machining accuracy. A common clamping structure is the chuck structure. The chuck structure includes a chuck and multiple sliders. These sliders are evenly distributed around the center point of the chuck and can slide relative to it. By moving closer to or further away from each other towards their common center point, the workpiece is gripped and fixed.

[0003] However, thin-walled workpieces produced by spinning have relatively thin sidewalls. After being fixed by a chuck structure, the sidewalls are prone to plastic deformation. Therefore, adhesive is generally used to fix such workpieces to the table for processing. However, if there is a groove or opening on the adhesive side of the workpiece and the table, and the size of the groove or opening is relatively small, it can be easily cleaned after being filled with glue, which can easily damage the workpiece.

[0004] Furthermore, when the surface to be processed is a flanged structure, it is in a suspended state and is prone to large swings when subjected to impacts from the processing equipment during processing, resulting in reduced processing accuracy.

[0005] Therefore, there is an urgent need for a fixture and machining table to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a fixture and processing table that can clamp and fix thin-walled workpieces that have been spun.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A fixture for holding a spun thin-walled workpiece, wherein the workpiece is annular in shape and has a flanged structure folded outward from its axial end; the fixture includes:

[0009] The base plate has a first insertion hole in the middle, and the axis of the first insertion hole is perpendicular to the base plate.

[0010] The pads are provided in multiple ways, and the multiple pads are distributed at intervals around the axis of the first insertion hole to form an accommodating space for placing the workpiece. One end of the pad is fixed relative to the base plate, and the other end can support the flange structure along the axial direction of the first insertion hole, so that the other end of the workpiece is spaced apart from the base plate.

[0011] The cover plate is located on the side of the workpiece facing away from the pad. The cover plate is fixed to the base plate by a first threaded fastener. The first threaded fastener is inserted into the first insertion hole. The cover plate has a relief groove. In the axial direction of the first insertion hole, a part of the flange structure can be exposed from the relief groove.

[0012] As a preferred technical solution of the above-mentioned fixture, it also includes a pressure plate, which is located on the side of the cover plate opposite to the workpiece. The pressure plate is fixed to the base plate by the first threaded fastener, and the cover plate is sandwiched between the pressure plate and the base plate.

[0013] As a preferred technical solution of the above-mentioned fixture, the pad has an abutment portion protruding on the side of the first insertion hole facing away from the base plate. The abutment portion is used to abut against the flange structure along the axial direction of the first insertion hole, and along the radial direction of the workpiece, the distance A between the abutment portion and the outer edge of the flange structure satisfies A≥0.

[0014] As a preferred technical solution of the above-mentioned fixture, the pad includes a block body and a support plate. The block body is connected to the base plate. The block body has an insertion groove. A part of the support plate is inserted into the insertion groove, and another part is exposed outside the insertion groove to form the abutment portion.

[0015] As a preferred technical solution of the above-mentioned fixture, the block body is provided with a plurality of the above-mentioned insertion slots, the plurality of the above-mentioned insertion slots are arranged radially at intervals along the first insertion hole, and the block body is provided with a plurality of the above-mentioned support plates, the support plates being able to be inserted into any of the above-mentioned empty insertion slots.

[0016] As a preferred technical solution for the above-mentioned fixture, the pad block is detachably connected to the base plate.

[0017] As a preferred technical solution for the above-mentioned fixture, the pad block and the base plate are connected by a second threaded fastener.

[0018] As a preferred technical solution of the above-mentioned fixture, the second threaded fastener passes through the base plate along the axial direction of the first insertion hole and is threadedly connected to the pad block. An adjusting nut is sandwiched between the pad block and the base plate, and the adjusting nut is threadedly connected to the second threaded fastener.

[0019] As a preferred technical solution of the above-mentioned fixture, the base plate is provided with multiple installation areas, which are circular in shape. The multiple installation areas are concentrically arranged and have different distances from the first insertion hole. Each installation area has multiple installation positions, and the pad can be fixed to one of the installation positions of the base plate.

[0020] A processing table is also provided, including a table plate and the above-mentioned fixture. The table plate has a plurality of sliding grooves parallel to a first direction. The length direction of the sliding grooves is parallel to a second direction. The first threaded fastener is inserted into the sliding groove along the axial direction of the first insertion hole and can slide or remain stationary relative to the table plate in the sliding groove along the second direction.

[0021] The first direction mentioned above intersects with the second direction mentioned above, and both are perpendicular to the axial direction of the first insertion hole mentioned above.

[0022] Beneficial effects of this invention:

[0023] This application provides a fixture for placing spun thin-walled workpieces. The workpiece is annular, with one axial end forming a flange structure that folds outward from its axis. The fixture includes a base plate, pads, and a cover plate. The base plate has a first insertion hole in its center, the axis of which is perpendicular to the base plate. Multiple pads are provided, spaced apart around the axis of the first insertion hole to form a space for placing the workpiece. One end of each pad is fixed relative to the base plate, while the other end supports the flange structure along the axial direction of the first insertion hole, thus spaced apart from the base plate at the other axial end of the workpiece. The cover plate is located on the side of the workpiece facing away from the pads and is fixed to the base plate by a first threaded fastener inserted into the first insertion hole. The cover plate has a clearance groove, allowing a portion of the flange structure to be exposed along the axial direction of the first insertion hole.

[0024] Specifically, multiple pads form a receiving space, where most of the workpiece is placed. Supported by the pads, the workpiece is spaced apart from the base plate to prevent deformation of the workpiece's axial end face against the base plate during processing. The workpiece's surface to be processed, i.e., its flanged structure, is supported by multiple pads, reducing its suspension length and preventing significant swaying during processing, which could affect machining accuracy. The cover plate is relatively fixed to the base plate by a first threaded fastener, and the workpiece is clamped between the cover plate and the pads, maintaining relative fixation. The clearance groove on the cover plate is the processing position for the flanged structure, allowing the processing equipment to process the flanged structure through the clearance groove. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the processing table provided in an embodiment of the present invention;

[0027] Figure 2 This is a top view of the processing table provided in an embodiment of the present invention;

[0028] Figure 3 This is a side view of the processing table provided in an embodiment of the present invention;

[0029] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0030] Figure 5 This is a schematic diagram of the assembly of the pad and the base plate provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the assembly of the fixture and workpiece provided in the embodiment of the present invention (excluding the cover plate);

[0032] Figure 7 This is a schematic diagram of the block body provided in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the pad provided in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the base plate provided in an embodiment of the present invention.

[0035] In the picture:

[0036] X, first direction; Y, second direction; Z, axial direction of the first insertion hole;

[0037] 100. Workpiece; 110. Flanged structure;

[0038] 200. Fixtures and tooling;

[0039] 210. Base plate; 211. First insertion hole; 2121. First mounting area; 2122. Second mounting area; 213. Fixing hole;

[0040] 220. Pad; 221. Block body; 2211. Insertion groove; 222. Support piece; 2221. Abutment part;

[0041] 230. Cover plate; 231. Clearance groove;

[0042] 240. First threaded fastener;

[0043] 250. Pressure plate;

[0044] 300, tabletop; 310, slide. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0046] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0049] like Figures 1 to 9As shown, this application provides a fixture 200 for placing a spun thin-walled workpiece 100. The workpiece 100 is annular in shape, and one axial end of it forms a flange structure 110 that folds outward toward its axis. The fixture 200 includes a base plate 210, a pad block 220, and a cover plate 230. The base plate 210 has a first insertion hole 211 in the middle, and the axis of the first insertion hole 211 is perpendicular to the base plate 210. Multiple pads 220 are provided, and the multiple pads 220 are distributed at intervals around the axis of the first insertion hole 211 to form a accommodating space for placing the workpiece 100. One end of the pad 220 is fixed relative to the base plate 210, and the other end can support the flange structure 110 along the axial direction Z of the first insertion hole 211, so that the other end of the workpiece 100 is spaced apart from the base plate 210. The cover plate 230 is located on the side of the workpiece 100 facing away from the pad 220. The cover plate 230 is fixed to the base plate 210 by a first threaded fastener 240, which is inserted into the first insertion hole 211. The cover plate 230 has a relief groove 231, and a part of the flange structure 110 can be exposed from the relief groove 231 along the axial direction Z of the first insertion hole 211.

[0050] Specifically, multiple pads 220 form a receiving space, in which most of the workpiece 100 is placed. Supported by the pads 220, the workpiece 100 is spaced apart from the base plate 210, preventing the axial end face of the workpiece 100 from being squeezed and deformed by the base plate 210 during processing. The surface of the workpiece 100 to be processed, i.e., its flanged structure 110, is supported by multiple pads 220, reducing its suspension length and preventing significant swaying during processing, which would affect processing accuracy. The cover plate 230 is relatively fixed to the base plate 210 by a first threaded fastener 240. The workpiece 100 is clamped between the cover plate 230 and the pads 220, maintaining relative fixation. The clearance groove 231 of the cover plate 230 is the processing position of the flanged structure 110, allowing the processing equipment to process the flanged structure 110 through the clearance groove 231.

[0051] Optionally, it also includes a pressure plate 250, which is located on the side of the cover plate 230 facing away from the workpiece 100. The pressure plate 250 is fixed to the base plate 210 by a first threaded fastener 240, and the cover plate 230 is sandwiched between the pressure plate 250 and the base plate 210.

[0052] Specifically, the contact area S1 between the pressure plate 250 and the cover plate 230 satisfies S1 > S2, where S2 is the contact area between the nut of the first threaded fastener 240 or the nut screwed to the first threaded fastener 240 and the cover plate 230, thus avoiding stress concentration between the cover plate 230 and the first threaded fastener 240.

[0053] Optionally, the pad 220 has an abutment portion 2221 protruding from the side of the first insertion hole 211 facing away from the base plate 210. The abutment portion 2221 is used to abut against the flange structure 110 along the axial direction Z of the first insertion hole 211. And along the radial direction of the workpiece 100, the distance A from the abutment portion 2221 to the outer edge of the flange structure 110 satisfies A≥0.

[0054] In this way, the edge of the flange structure 110 is avoided, so as to prevent the pad block 220 from interfering with the outer wall of the flange structure 110 when the processing equipment processes it.

[0055] Optionally, the pad 220 includes a block body 221 and a support piece 222. The block body 221 is connected to the base plate 210. The block body 221 has an insertion groove 2211. A part of the support piece 222 is inserted into the insertion groove 2211, and another part is exposed outside the insertion groove 2211 to form an abutment part 2221.

[0056] In this way, the replacement of the block body 221 and the number of times it is disassembled from the base plate 210 are reduced, and the relative stability of the block body 221 and the base plate 210 is maintained. The problem of poor support stability of the pad block 220 for the flange structure 110 due to wear or other reasons can be solved by replacing the support plate 222.

[0057] Specifically, when the block body 221 is fixed to the base plate 210, the length direction of the insertion groove 2211 is parallel to the axial direction Z of the first insertion hole 211, the width direction of the insertion groove 2211 is perpendicular to its length direction, the length direction of the support piece 222 is parallel to the length direction of the insertion groove 2211, and the width direction of the support piece 222 is parallel to the width direction of the insertion groove 2211. Thus, by replacing the support pieces 222 of different lengths, workpieces 100 with different axial dimensions can be adapted; by replacing the support pieces 222 of different widths, the contact area and position of the abutment part 2221 and the flange structure 110 can be adjusted.

[0058] Optionally, the block body 221 has multiple insertion slots 2211, which are arranged radially at intervals along the first insertion hole 211. The block body 221 is provided with several support pieces 222, which can be inserted into any empty insertion slot 2211.

[0059] Thus, the support piece 222 can be inserted into the insertion slots 2211 at different positions to adjust the contact position between the contact part 2221 and the flange structure 110 of the workpiece 100.

[0060] Furthermore, the insertion of multiple support plates 222 into a block body 221 can increase the contact area between the abutting part 2221 of the pad block 220 and the flange structure 110. During processing, the flange structure 110 can provide good support and avoid large-scale vibration of the flange structure 110 during processing, which would affect the processing accuracy.

[0061] Optionally, the pad 220 is detachably connected to the base plate 210. Thus, the pad 220 can be replaced to accommodate different types of workpieces 100.

[0062] In this embodiment, the pad 220 and the base plate 210 are connected by a second threaded fastener.

[0063] Specifically, the second threaded fastener includes a nut and a screw, which passes through both the pad 220 and the base plate 210. One of the pad 220 and the base plate 210 has a threaded hole along the axial direction of the screw, away from the nut, and the screw is threaded into the threaded hole. Thus, the threaded connection prevents radial movement between the pad 220 and the base plate 210 within the first insertion hole 211, and also restricts axial Z-movement of both within the first insertion hole 211.

[0064] Preferably, the threaded hole is formed in the pad 220, and the threaded hole is a blind hole. The nut of the second threaded fastener is located on the side of the base plate 210 opposite to the pad 220, and the screw of the second threaded fastener passes through the base plate 210 and is screwed to the pad 220. In this way, the nut of the second threaded fastener is hidden on the back of the base plate 210, which will not interfere with the clamping of the workpiece 100. Moreover, the blind hole of the threaded hole prevents machining debris from entering the threaded hole when machining the flange structure 110 of the workpiece 100.

[0065] In other embodiments, a pin is provided at one end of the pad 220, and a pin hole is provided on the base plate 210. The pin hole is a polygonal shape that is adapted to the axial direction, and the pin is inserted into the pin hole.

[0066] Optionally, the second threaded fastener passes through the base plate 210 along the axial direction Z of the first insertion hole 211 and is threadedly connected to the pad 220. An adjusting nut is sandwiched between the pad 220 and the base plate 210, and the adjusting nut is threadedly connected to the second threaded fastener.

[0067] Thus, by adding an adjusting nut between the pad 220 and the base plate 210, the distance between the pad 220 in the first insertion hole 211 and the base plate 210 is changed, so that it can meet the clamping of workpieces 100 with different axial dimensions.

[0068] Furthermore, when it is necessary to adjust the distance between the pad 220 and the base plate 210, one method is to increase or decrease the number of adjusting nuts between them, that is, the number of adjusting nuts fitted along the axial direction of the same second threaded fastener. Alternatively, the adjusting nut can be turned to move along the axial direction of the second threaded fastener, thereby supporting the movement of the pad 220. It should be noted that when using this method, one end of the second threaded fastener needs to be fixed relative to the base plate 210.

[0069] Optionally, the base plate 210 is provided with multiple installation areas in a circular shape. The multiple installation areas are concentrically arranged and have different distances from the first insertion hole 211. Each installation area has multiple installation positions, and the pad 220 can be fixed to the base plate 210 at one of the installation positions.

[0070] For ease of description, the base plate 210 is provided with two mounting areas, referred to as the first mounting area 2121 and the second mounting area 2122, respectively. In the first mounting area 2121, multiple first mounting positions are provided around the axis of the first insertion hole 211, and the distance between the multiple mounting positions and the axis of the first insertion hole 211 is R1. In the second mounting area 2122, multiple second mounting positions are provided around the axis of the first insertion hole 211, and the distance between the multiple second mounting positions and the axis of the first insertion hole 211 is R2, satisfying R2>R1. In this way, the pad 220 can be selectively fixed to the first mounting position or the second mounting position to expand the volume of the accommodating space and expand the radial dimension of the accommodating space of the first insertion hole 211 to accommodate workpieces 100 with different hole diameters.

[0071] Furthermore, taking the first mounting area 2121 as an example, the first mounting area 2121 is strip-shaped, with the distance from the line to the center of the axis of the first insertion hole 211 being R1. The distances from its two side edges to the axis of the first insertion hole 211 are R11 and R12, respectively, satisfying R2 > R12 > R11 > 0, and R2 - R12 > R12 - R11. The distances of multiple first mounting positions from the axial Z of the first insertion hole 211 can be different, but each first mounting position has at least two other first mounting positions that are equidistant from the axis of the first insertion hole 211, and these three equidistant first mounting positions are spaced 120° apart. In this way, the gasket within the first mounting area 2121 can be further fine-tuned to support the flange structure 110.

[0072] A processing table is also provided, including a table plate 300 and a fixture 200. The table plate 300 has a plurality of sliding grooves 310 parallel to the first direction X. The length direction of the sliding grooves 310 is parallel to the second direction Y. A first threaded fastener 240 is inserted into the sliding groove 310 along the axial direction Z of the first insertion hole 211 and can slide or remain stationary relative to the table plate 300 in the sliding groove 310 along the second direction Y.

[0073] The first direction X intersects with the second direction Y, and both are perpendicular to the axis Z of the first insertion hole 211.

[0074] Specifically, the first threaded fastener 240 includes a nut and a screw. The first threaded fastener 240 is used in conjunction with a nut, which is located on the side of the platform 300 opposite to the even-numbered nuts. The screw of the first threaded fastener 240 is simultaneously inserted into the slide groove 310, the first insertion hole 211, and threadedly connected to the nut after passing through the cover plate 230. The first threaded fastener 240 can selectively insert into the slide groove 310 to change the relative position of the workpiece 100 and the fixture 200 with respect to the platform 300 in the first direction X; when adjustment is required in the second direction Y... When the workpiece 100 and the fixture 200 are in relative position with the table 300, loosen the nut and the first threaded fastener 240 to increase the distance between the nut and the nut of the first threaded fastener 240, so that the first threaded fastener 240 can slide relative to the table 300 in the second direction Y within the slide groove 310; when it is necessary to fix them in a fixed position, tighten the nut and the first threaded fastener 240; when it is necessary to remove the fixture 200 and / or the workpiece 100 from the table 300, first remove the nut from the first threaded fastener 240.

[0075] Furthermore, the base plate 210 has several fixing holes 213, the axis of the fixing holes 213 is parallel to the axis Z of the first insertion hole 211, and the base plate 210 is also fixed to the platform 300 by a third threaded fastener.

[0076] Optionally, the fixing hole 213 is a threaded hole, and the third threaded fastener includes a nut and a screw. The nut and screw are fixed together. The nut is located on the side of the platform 300 opposite to the pad block 220. The screw passes through the slide groove 310 along the axis of the first insertion hole 211 and extends into the fixing hole 213, and is threadedly connected to the base plate 210.

[0077] Optionally, the fixing hole 213 is a smooth hole, and the third threaded fastener is used in conjunction with the nut. The nut is located on the side of the platform 300 opposite to the nut of the third threaded fastener. The thread of the third threaded fastener passes through both the slide groove 310 and the fixing hole 213 and is threadedly connected to the nut. The base plate 210 and the platform 300 are both clamped between the nut and the nut of the third threaded fastener to achieve fixation.

[0078] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A fixture for placing a spun thin-walled workpiece (100), said workpiece (100) being annular in shape, with one axial end forming a flange structure (110) folded outwards from its axis, characterized in that, The fixture includes: A base plate (210) is provided with a first insertion hole (211) in the middle of the base plate (210), and the axis of the first insertion hole (211) is perpendicular to the base plate (210). A pad (220) is provided, and multiple pads (220) are distributed at intervals around the axis of the first insertion hole (211) to form an accommodating space for placing the workpiece (100). One end of the pad (220) is fixed relative to the base plate (210), and the other end can support the flange structure (110) along the axial direction (Z) of the first insertion hole (211), so that the other end of the workpiece (100) is spaced apart from the base plate (210). A cover plate (230) is located on the side of the workpiece (100) facing away from the pad block (220). The cover plate (230) is fixed to the base plate (210) by a first threaded fastener (240), which is inserted into the first insertion hole (211). The cover plate (230) has a relief groove (231) in the axial direction (Z) of the first insertion hole (211). A portion of the flange structure (110) can be exposed from the relief groove (231). The pad (220) has a protruding abutment (2221) on the side of the first insertion hole (211) facing away from the base plate (210) along the axial (Z) direction. The abutment (2221) is used to abut against the flange structure (110) along the axial (Z) direction of the first insertion hole (211) and along the radial direction of the workpiece (100). The distance A between the abutment (2221) and the outer edge of the flange structure (110) satisfies A≥0. The pad (220) includes a block body (221) and a support piece (222). The block body (221) is connected to the base plate (210). The block body (221) has an insertion groove (2211). A part of the support piece (222) is inserted into the insertion groove (2211), and another part is exposed outside the insertion groove (2211) to form the abutment part (2221). The block body (221) has a plurality of insertion slots (2211), which are arranged radially at intervals along the first insertion hole (211). The block body (221) is provided with a plurality of support pieces (222), which can be inserted into any empty insertion slot (2211).

2. The fixture according to claim 1, characterized in that, It also includes a pressure plate (250), which is located on the side of the cover plate (230) facing away from the workpiece (100). The pressure plate (250) is fixed to the base plate (210) by the first threaded fastener (240), and the cover plate (230) is sandwiched between the pressure plate (250) and the base plate (210).

3. The fixture according to claim 1, characterized in that, The pad (220) is detachably connected to the base plate (210).

4. The fixture according to claim 3, characterized in that, The pad (220) is connected to the base plate (210) by a second threaded fastener.

5. The fixture according to claim 4, characterized in that, The second threaded fastener passes through the base plate (210) along the axial direction (Z) of the first insertion hole (211) and is threadedly connected to the pad (220). An adjusting nut is sandwiched between the pad (220) and the base plate (210), and the adjusting nut is threadedly connected to the second threaded fastener.

6. The clamp tool of claim 3, wherein The base plate (210) is provided with multiple installation areas, which are circular in shape. The multiple installation areas are concentrically arranged and have different distances from the first insertion hole (211). Each installation area has multiple installation positions, and the pad (220) can be fixed to the base plate (210) at one of the installation positions.

7. A processing table, characterized in that, The fixture includes a platform (300) and a jig tool (200) as described in any one of claims 1-6. The platform (300) has a plurality of slide grooves (310) parallel to a first direction (X). The length direction of the slide grooves (310) is parallel to a second direction (Y). The first threaded fastener (240) is inserted into the slide groove (310) along the axial direction (Z) of the first insertion hole (211) and can slide or remain stationary relative to the platform (300) in the slide groove (310) along the second direction (Y). The first direction (X) intersects with the second direction (Y), and both are perpendicular to the axial direction (Z) of the first insertion hole (211).

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