Clamping and polishing jig for clamping support
By introducing adjustable tightening parts and elastic mechanisms into the tray polishing fixture, the problems of small adaptability range and high cost of the tray polishing fixture are solved, and higher processing stability and accuracy are achieved, reducing the need for replacing the mount.
Patent Information
- Application Number
- CN202422421479.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The existing katra polishing fixtures have a small adaptability range, resulting in high processing costs.
The clamping polishing fixture is adopted to provide adjustable first and second tightening parts on the mounting seat, combined with the elastic mechanism and the upward limit structure, stable clamping of the workpiece placement plate is achieved, adapting to workpiece placement plates of different sizes.
It improves the stability and accuracy of tray processing, expands the scope of application, and reduces processing costs.
Smart Images
Figure CN223211167U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of card tray processing, in particular to a card tray clamping and polishing jig. Background Art
[0002] The card holder is a tool for supporting a mobile phone card. The card holder comprises an ear holder and a bracket. The ear holder lies horizontally on one end portion of the bracket and is arranged perpendicular to the bracket, and the two end portions of the ear holder extend out of both sides of the bracket. The end surface of the ear holder facing away from the bracket needs to be polished by a polishing machine. The existing card holder polishing jig mainly comprises a mounting seat and a workpiece placing plate mounted on the mounting seat. The bottom surface of the mounting seat has a mounting structure installed together with the polishing machine, and the workpiece placing plate is fixed on the top surface of the mounting seat. The top surface of the workpiece placing plate is upwardly provided with a plurality of mounting protrusions arranged in a matrix. The top surface of the mounting protrusion is concavely provided with a positioning groove for the bracket of the card holder to be embedded therein and extending to the outside of the bottom surface of the workpiece placing plate. The two end portions of the ear holder are superimposed on the top surface of the mounting protrusion. When in use, the card holder is fully inserted into the workpiece placing plate, and the ear holder of the card holder is made to leak out from the top surface of the mounting protrusion. The mounting seat is then mounted on the polishing machine through the mounting structure, and the polishing wheel of the polishing machine faces the end surface of the ear holder for polishing.
[0003] The above-mentioned tray polishing jig, during the processing, after the workpiece placing tray is full, when the tray needs the next process, since the workpiece placing tray is fixedly mounted on the top surface of the mounting seat, it is necessary to remove the mounting seat and the workpiece placing tray together. If workpiece placing trays of different sizes need to be polished, corresponding mounting seats need to be set up accordingly for processing, resulting in one workpiece placing tray being able to be polished with only one mounting seat, which has a small scope of application and also makes the processing cost higher.
[0004] In view of this, the inventor of this case conducted in-depth research on the problem, which led to the creation of this case. Summary of the Invention
[0005] The purpose of the utility model is to provide a card holder clamping polishing jig to solve the problems of the existing card holder polishing jig having a small adaptability range and high processing cost.
[0006] In order to achieve the purpose, the utility model adopts the following technical solution:
[0007] The cam clamping polishing fixture comprises a mounting seat and a workpiece placing plate mounted on the mounting seat, the top surface of the mounting seat is provided with a accommodating groove, the workpiece placing plate is movably placed flat in the accommodating groove, and a first clamping member and a second clamping member are provided in the accommodating groove, which are located outside the workpiece placing plate and can be translated toward or away from the workpiece placing plate, and the workpiece placing plate is located between the first clamping member and the second clamping member, and a limiting structure for limiting the translation of the first clamping member is installed on the mounting seat, and an elastic mechanism for pressing the second clamping member and generating a restoring force is provided outside the second clamping member, and the second clamping member is located between the elastic mechanism and the workpiece placing plate, and an upward limiting structure for limiting the upward movement of the workpiece placing plate is provided on the first clamping member and the workpiece placing plate, as well as on the second clamping member and the workpiece placing plate. Two downward pressing fixing members that are relatively arranged and pressed against the top surface of the workpiece placing plate are detachably installed on the mounting seat, and the downward pressing fixing member is located between the first clamping member and the second clamping member.
[0008] Taking the relative direction of the first clamping member and the second clamping member as the left and right directions, the first clamping member and the second clamping member are respectively located on the left and right sides of the workpiece placement plate, and the first clamping member is installed on the mounting seat in a manner that can be adjusted and moved left and right. The limiting structure is located on the left side of the first clamping member, and the elastic mechanism is located on the right side of the second clamping member. The two downward-pressing fixing members are partially overlapped on the top front side and the top rear side of the workpiece placement plate respectively.
[0009] The first clamping member and the second clamping member are both strip-shaped blocks extending in the front-to-back direction. A first mounting block located on the left side of the first clamping member is locked on the top surface of the left end of the mounting seat. A first screw hole running through the first mounting block in the left-right direction is provided. A first limiting hole is recessed to the right at the position of the first screw hole on the left side of the first clamping member. A first limiting rod is provided on the first mounting block, which passes through the first screw hole and extends to the range of the first limiting hole. The first mounting block, the first limiting hole and the first limiting rod constitute the above-mentioned limiting structure.
[0010] An adjustment block extending in the front-to-back direction is provided on the right side of the second clamping member, and the adjustment block is locked on the mounting seat in a manner that it can be adjusted and moved left and right. A tensioning spring is provided between the adjustment block and the second clamping member. Several tensioning springs are provided, and each tensioning spring is arranged at intervals in the front-to-back direction. Both end portions of the tensioning spring are respectively connected to the adjustment block and the second clamping member and extend into the adjustment block and the second clamping member. The adjustment block and the tensioning spring constitute the above-mentioned elastic mechanism.
[0011] The right side of the top surface of the mounting seat is locked with a second mounting block on the right side of the adjusting block, and the second mounting block is provided with a second screw hole running through it in the left and right directions. A second limiting hole is recessed to the left at the position of the second screw hole on the right side of the adjusting block, and the second mounting block is provided with a second limiting screw that passes through the second screw hole and extends into the range of the second limiting hole.
[0012] The right side of the first clamping member is in close contact with the left side of the workpiece placement plate, and the right side of the first clamping member is a left inclined surface set downward from right to left, and the left side of the workpiece placement plate is a left inclined surface matching the left inclined surface. The left side of the second clamping member is in close contact with the right side of the workpiece placement plate, and the left side of the second clamping member is a right inclined surface set downward from left to right, and the right side of the workpiece placement plate is a right inclined surface matching the right inclined surface. The left inclined surface and the right inclined surface form a horn structure that gradually expands from top to bottom, and the left inclined surface, left inclined surface, right inclined surface and right inclined surface constitute the above-mentioned upward limiting structure.
[0013] The top surface of the mounting seat is provided with locking blocks on both the front and rear sides. The two locking blocks and the top surface of the mounting seat form the above-mentioned accommodating groove. The workpiece placement disk is located between the two locking blocks. The front and rear side surfaces of the workpiece placement disk are recessed with overlapping grooves that lead to the outside of the top surface of the workpiece placement disk. The top surfaces of the two locking blocks are recessed with overlapping grooves that are relatively connected to the overlapping grooves at the positions corresponding to the positioning grooves, and the groove bottoms of the overlapping grooves and the groove bottoms of the overlapping grooves are on the same plane. The locking block is provided with a fixing block that is locked in the overlapping groove and overlapped within the range of the overlapping groove. The fixing block is the above-mentioned downward-pressing fixing part.
[0014] The top surface of the described supporting plate is provided with a plurality of grooves, and the grooves are connected with the grooves of the accommodating groove. The top surface of the described supporting plate is provided with a plurality of grooves, and the grooves are connected with the grooves of the accommodating groove. The grooves are connected with the grooves of the accommodating groove.
[0015] The pressing block has a horizontal portion and a vertical portion, the horizontal portion extends along the front-to-back direction, the vertical portion is located on the left side of the horizontal portion and is perpendicular to the horizontal portion, the front and rear end portions of the horizontal portion extend out of the front and rear sides of the vertical portion, and the front and rear end portions of the horizontal portion are both protruding with an embedded block embedded in the bottom surface of the upper pressure plate, and the vertical portion extends into the pressing groove toward one end of the pressing groove.
[0016] The front side surface and the rear side surface of the vertical portion are both concavely provided with arc grooves, and the two arc grooves are spaced apart from each other on the left and right sides.
[0017] The first and second clamping members are relatively adjusted to relatively clamp the workpiece placing plate, and the first clamping member is restricted by a limiting structure on the side of the first clamping member facing away from the workpiece placing plate, and the second clamping member is restricted by an elastic mechanism on the side of the second clamping member facing away from the workpiece placing plate, so that the first clamping member and the second clamping member can better clamp the workpiece placing plate, and then a downward pressure is generated on the workpiece placing plate by a downward pressing fixing member superimposed on the workpiece placing plate to prevent the workpiece placing plate from moving upward. At the same time, the upward movement limiting structure further prevents the workpiece placing plate from moving upward. , thereby making it difficult for the workpiece placement plate to move up and down in all directions, so that the position of the bracket is more stable during the processing, and the processing accuracy is higher; compared with the existing technology, when replacing workpiece placement plates of different sizes, the first clamping member and the second clamping member can adjust the distance relatively, which can adapt to workpiece placement plates of different sizes and has a wider range of applications, and the first clamping member further presses one side of the workpiece placement plate through the limiting structure, and the second clamping member presses the other side of the workpiece placement plate through the elastic mechanism, and the upward limiting structure can also prevent the workpiece placement plate from moving upward during the processing, making the bracket processing process more stable and the processing accuracy higher; moreover, there is no need to replace the mounting seat, and the processing cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural diagram of the present utility model.
[0019] Figure 2 This is a structural diagram of the mounting base of the utility model.
[0020] Figure 3 It is a structural schematic diagram of the upper pressure plate of the utility model. DETAILED DESCRIPTION
[0021] In order to further explain the technical solution of the present invention, it is described in detail below with reference to the accompanying drawings.
[0022] Cato clamping polishing fixture, such as Figure 1-Figure 3As shown, it includes a mounting base 1 and a workpiece placement plate 2 mounted on the mounting base 1, the top surface of the mounting base 1 is provided with a receiving groove, the workpiece placement plate 2 is movably placed flat in the receiving groove, and a first retaining member 3 and a second retaining member 4 are provided in the receiving groove, which are located outside the workpiece placement plate 2 and can be translated toward or away from the workpiece placement plate 2. The workpiece placement plate 2 is located between the first retaining member 3 and the second retaining member 4, and a limiting structure for limiting the translation of the first retaining member 3 is installed on the mounting base 1; specifically, the first retaining member 3 and the second retaining member 4 are respectively located outside the left side and the right side of the workpiece placement plate 2, and the first retaining member 3 and the second retaining member 4 are both strip-shaped blocks extending in the front-to-back direction, that is, the The mounting seat 1 is a circular plate structure, and the workpiece placement plate 2 is a square structure. Locking blocks 11 are convexly provided on both sides of the top front and rear of the mounting seat 1. The two locking blocks 11 and the top surface of the mounting seat 1 form the above-mentioned accommodating groove, and the workpiece placement plate 2 is located between the two locking blocks 11. The first tightening member 3 is locked within the range of the mounting seat 1 in a manner that can be adjusted left and right. That is, the first tightening member 3 is provided with a plurality of first adjustment holes that penetrate the first tightening member 3 in the up and down directions and are spaced apart along the front and back directions. The first adjustment hole is a strip-shaped through-hole extending in the left and right directions. A first screw hole is concavely provided in the range corresponding to the strip through-hole on the left side of the top surface of the mounting seat. The first tightening member 3 is provided with a plurality of first adjustment holes that penetrate the first tightening member 3 in the up and down directions and are spaced apart along the front and back directions. shaped through-hole and the first screw hole are locked with the first mounting bolt 31 of the mounting base 1. Preferably, the first tightening member 3 is provided with two strip-shaped positioning holes that pass through it up and down and extend in the left and right directions. The first adjustment hole is within the range between the two shaped positioning holes. A positioning column is protruded upward at the position corresponding to the strip positioning hole on the top surface of the mounting base 1; the limiting structure is outside the left side of the first tightening member 3, that is, the first mounting block 12 on the left side of the first tightening member 3 is locked on the top surface of the left end of the mounting base 1, that is, the first mounting block 12 is provided with an upper screw hole that passes through it up and down, and there are two upper screw holes, which are spaced apart front and back, and the mounting base is located at the position of the upper screw hole A lower screw hole is recessed at the position where the first mounting block 12 is located. The first mounting block 12 is locked with the mounting base 1 by sequentially passing through the upper screw hole and the lower screw hole with the mounting screw 121. A first screw hole is opened on the first mounting block 12 that passes through the left and right directions. The first screw hole is located between the two screw holes. A first limiting hole is recessed to the right at the position of the first screw hole on the left side of the first fastening member 3. A first limiting rod 122 is provided on the first mounting block 12 that passes through the first screw hole and extends into the range of the first limiting hole. The rod portion of the first limiting rod 122 is screwed together with the inner side wall of the first screw hole. The first mounting block 12, the first limiting hole and the first limiting rod 122 constitute the above-mentioned limiting structure.During use, the workpiece placement tray 2 is placed between the two locking blocks 11. The positioning post is then aligned with the strip positioning hole of the first abutting member 3. The strip opening is also aligned with the first screw hole. The first mounting bolt 31 is inserted into the strip opening and the first screw hole. The position of the first abutting member 3 is adjusted. The first mounting bolt 31 is screwed into the inner side wall of the first screw hole to complete the installation of the first abutting member 3. The first mounting block 12 is then locked to the left side of the first abutting member 3. The right end of the first limiting rod 122 is inserted into the first limiting hole to tighten the first abutting member 3.
[0023] The second pressing member 4 is provided with an elastic mechanism outside the second pressing member 4 to press the second pressing member 4 and generate a restoring force; specifically, the elastic mechanism is outside the right side of the second pressing member 4, that is, an adjustment block 41 extending in the front-to-back direction is provided on the right side of the second pressing member 4, and the adjustment block 41 is locked on the mounting seat 1 in a manner that can be adjusted left and right. The manner in which the adjustment block 4 is adjusted left and right is the same as the manner in which the first pressing member 3 is adjusted left and right, which is a well-known technology and will not be elaborated here. A tensioning spring (not shown in the figure) is provided between the adjustment block 41 and the second pressing member 4. There are several tensioning springs, each of which is tensioned The springs are arranged at intervals along the front-to-back direction, and the ends of the tensioning spring are respectively connected to the adjusting block 41 and the second tightening member 4 and extend into the adjusting block 41 and the second tightening member 4, that is, the right side of the second tightening member 4 is concavely provided with a left groove to the left, and the left side of the adjusting block 41 is concavely provided with a right groove. The tensioning spring extends along the left-right direction and is within the range of the left groove and the right groove, and the left end of the tensioning spring is connected to the bottom of the left groove, and the right end of the tensioning spring is connected to the bottom of the right groove. The adjusting block 41 and the tensioning spring constitute the above-mentioned elastic mechanism, and the mounting seat 1 is on the right side of the adjusting block 41. The outer lock There is an inherent second mounting block 411. The locking method of the second mounting block 411 is similar to that of the first mounting block, and no further details will be given here. A second screw hole is opened on the second mounting block 411 and passes through the left and right directions. A second limiting hole is recessed to the left at the position of the second screw hole on the right side of the adjusting block 41. There are two second limiting holes. A second limiting screw 4111 is provided on the second mounting block 411, which passes through the second screw hole and extends into the range of the second limiting hole. There are two second limiting screws 4111 accordingly. When in use, the workpiece placement plate moves to the left, so that the second fastening member 4 and The first clamping member 3 cooperates to clamp the workpiece placement disk 2 and lock the adjusting block 41, and at the same time, the second limiting screw 4111 extends into the second limiting hole, and the second limiting screw 4111 presses the adjusting block 41, so that the left and right sides of the workpiece placement disk 2 are simultaneously subjected to the clamping force of the first clamping member 3 and the second clamping member 4, and the left side of the first clamping member 3 can further limit the movement of the first clamping member through the first limiting rod 122, and the right side of the second clamping member can further limit the movement of the second clamping member through the second limiting screw 4111, thereby increasing the force of the first clamping member and the second clamping member on the workpiece placement disk.
[0024] The second retaining member 4 is located between the elastic mechanism and the workpiece placement plate 2, and the first retaining member 3 and the workpiece placement plate 2 as well as the second retaining member 4 and the workpiece placement plate 2 are provided with an upward limit structure for limiting the upward movement of the workpiece placement plate 2; specifically, the right side of the first retaining member 3 and the left side of the workpiece placement plate 2 are in close contact with each other, and the right side of the first retaining member 3 is a left inclined surface 32 arranged downward from right to left, and the left side of the workpiece placement plate 2 is a left inclined surface matching the left inclined surface 32, and the left side of the second retaining member 4 and the right side of the workpiece placement plate 2 They fit together, and the left side surface of the second clamping member 4 is a right inclined surface 42 arranged downward from left to right, and the right side surface of the workpiece placement tray 2 is a right inclined surface matching the right inclined surface 42. The left inclined surface 32 and the right inclined surface 42 form a horn structure that gradually expands from top to bottom. The left inclined surface 32, the left inclined surface, the right inclined surface 42 and the right inclined surface constitute the above-mentioned upward limiting structure; when used, the left inclined surface 32 relative to the left inclined surface, and the right inclined surface 42 relative to the right inclined surface generate pressure on the left and right sides of the workpiece placement tray, so that the workpiece placement tray is not easy to move upward during use.
[0025] The mounting base 1 is detachably mounted with two downward-pressing fixing members 5 which are arranged opposite to each other and pressed against the top surface of the workpiece placement plate 2. The downward-pressing fixing member 5 is located between the first pressing member 3 and the second pressing member 4. Specifically, the two downward-pressing fixing members 5 are partially overlapped on the front side and the rear side of the top surface of the workpiece placement plate 2, that is, the front side and the rear side of the workpiece placement plate 2 are both concavely provided with overlapping grooves extending to the outside of the top surface of the workpiece placement plate 2, and the top surfaces of the two locking blocks 11 are concavely provided with locking grooves which are relatively connected to the overlapping grooves at the positions corresponding to the positioning grooves, and the overlapping grooves are The bottom of the groove and the bottom of the locking groove are on the same plane, and the locking block 11 is provided with a fixing block locked in the overlapping groove and overlapped within the range of the locking groove, and the fixing block is the above-mentioned downward pressing fixing member 5; when used, the two downward pressing fixing members 5 press down the front and rear sides of the workpiece placement disk, generating downward pressure on the front and rear sides of the workpiece placement disk, so that the four sides of the workpiece placement disk have pressure relative to the workpiece placement disk under the cooperation of the first clamping member 3 and the second clamping member, thereby making the workpiece placement disk more stable during the processing and not easy to move upward.
[0026] The present invention relates to a new type of card holder clamping polishing fixture. When assembling, the workpiece placing plate 2 is placed between the two locking blocks 11, the first clamping member 3 is locked on the mounting seat 1 and is located on the left side of the workpiece placing plate 2. At the same time, the first limiting rod 122 is used to tighten the first clamping member 3, and the left inclined surface of the workpiece placing plate 2 is matched with the left inclined surface 32 of the first clamping member 3. Then the right inclined surface of the second clamping member 4 is pressed against the right inclined surface of the workpiece placing plate 2, and the adjusting block 41 is locked, so that the workpiece placing plate is clamped between the first clamping member 3 and the second clamping member, and pressure is generated on the left and right sides of the workpiece placing plate through the upward limiting structure to prevent the left and right sides of the workpiece placing plate from moving upward. Finally, the front and rear sides of the workpiece placing plate are fixed by the downward fixing members 5 stacked on the front and rear sides of the workpiece placing plate. The rear side generates downward pressure to prevent the front and rear sides of the workpiece placement plate from moving upward, thereby making it difficult for the workpiece placement plate to move up and down in the four directions of front, back, left and right. During the processing, the operation of the bracket is more stable and the processing accuracy is higher. Compared with the existing technology, when replacing workpiece placement plates of different sizes, the first clamping member and the second clamping member can adjust the distance relatively, which can adapt to workpiece placement plates of different sizes and has a wider range of applications. The first clamping member further presses one side of the workpiece placement plate through the limiting structure, and the second clamping member presses the other side of the workpiece placement plate through the elastic mechanism. The upward limiting structure can also prevent the workpiece placement plate from moving upward during processing, making the bracket processing process more stable and the processing accuracy higher. Moreover, there is no need to replace the mounting seat, and the processing cost is lower.
[0027] The top surface of the lower mounting plate 21 is provided with a plurality of rows of mounting protrusions arranged at intervals along the front and rear directions, and the mounting protrusion rows have a plurality of mounting protrusions 211 arranged at intervals along the left and right directions. The top surface of the mounting protrusions 211 is provided with a recessed positioning groove for the bracket of the card holder to be embedded therein and passing through the outside of the bottom surface of the lower mounting plate 21. The positioning groove is extended along the front and rear directions, and the bottom surface of the mounting seat 1 is recessed with an extension groove arranged opposite to the positioning groove and for the bracket to extend out. The upper pressure plate 22 is superimposed on the top surface of the lower mounting plate 21, and The upper pressure plate 22 is provided with a plurality of strip holes arranged at intervals along the front and rear directions, and a row of mounting protrusions corresponds to a strip hole, and the right side of the mounting protrusion 211 is recessed with a pressing groove connected to the positioning groove, and the top surface of the lower mounting plate 21 is located on the right side of the mounting protrusion 211 and is provided with a pressing block 6 that can extend into the pressing groove and overlap on the bracket of the card holder, and the pressing block 6 is installed on the upper pressure plate 22; during installation, after installing the first clamping member 3, the upper pressure plate 6 is moved to the left, and the left side of the upper pressure plate 6 is tightly matched with the left side of the first clamping member, and the left end of the pressing block is extended into the pressing groove and pressed on the bracket of the card holder, and the card holder is not easy to move during the processing, and then the position of the second clamping member is relatively adjusted, that is, the left and right sides of the upper pressure plate are pressed by the first clamping member and the second clamping member, and finally the upper and lower sides of the upper pressure plate are pressed by overlapping the two lower pressing fixing members 5 in the overlapping groove.
[0028] In the present invention, it is preferred that the pressing block 6 has a horizontal portion 61 and a vertical portion 62, the horizontal portion 61 extends along the front and rear directions, the vertical portion 62 is on the left side of the horizontal portion 61 and is perpendicular to the horizontal portion 61, the front and rear end portions of the horizontal portion 61 extend outside the front and rear sides of the vertical portion 62, and the front and rear end portions of the horizontal portion 61 are convexly provided with an embedding block embedded in the bottom surface of the upper pressure plate 22, that is, the bottom surface of the upper pressure plate is located at the front and rear sides of the strip hole, and a number of embedding grooves 100 for embedding the embedding blocks are provided therein, and the left end of the vertical portion 62 extends into the pressing groove, and it is preferred that the front and rear sides of the vertical portion 62 are both concavely provided with arc grooves, and the two arc grooves are spaced apart on the left and right; when used, the setting of the arc groove makes the vertical portion 62 have a certain elasticity, and will not cause hard force damage to the bracket of the card holder.
[0029] The product form of the present utility model is not limited to the illustrations and embodiments of this case. Any appropriate changes or modifications made by anyone with similar ideas should be deemed to be within the patent scope of the present utility model.
Claims
1. A card holder clamping and polishing fixture, comprising a mounting base and a workpiece placement plate mounted on the mounting base, characterized in that: The top surface of the mounting seat is provided with a accommodating groove, and the workpiece placing plate is movably placed flat in the accommodating groove, and a first clamping member and a second clamping member are provided in the accommodating groove, which are located outside the workpiece placing plate and can be translated toward or away from the workpiece placing plate, and the workpiece placing plate is located between the first clamping member and the second clamping member, and a limiting structure for limiting the translation of the first clamping member is installed on the mounting seat, and an elastic mechanism for pressing the second clamping member and generating a restoring force is provided outside the second clamping member, and the second clamping member is between the elastic mechanism and the workpiece placing plate, and an upward limiting structure for limiting the upward movement of the workpiece placing plate is provided on the first clamping member and the workpiece placing plate, and on the second clamping member and the workpiece placing plate. Two downward pressing fixing members that are relatively arranged and pressed against the top surface of the workpiece placing plate are detachably installed on the mounting seat, and the downward pressing fixing member is between the first clamping member and the second clamping member.
2. The card holder clamping and polishing jig according to claim 1, characterized in that: Taking the relative direction of the first clamping member and the second clamping member as the left and right directions, the first clamping member and the second clamping member are respectively located on the left and right sides of the workpiece placement plate, and the first clamping member is installed on the mounting seat in a manner that can be adjusted and moved left and right. The limiting structure is located on the left side of the first clamping member, and the elastic mechanism is located on the right side of the second clamping member. The two downward-pressing fixing members are partially overlapped on the top front side and the top rear side of the workpiece placement plate respectively.
3. The card holder clamping and polishing jig according to claim 2, characterized in that: The first clamping member and the second clamping member are both strip-shaped blocks extending in the front-to-back direction. A first mounting block located on the left side of the first clamping member is locked on the top surface of the left end of the mounting seat. A first screw hole running through the first mounting block in the left-right direction is provided. A first limiting hole is recessed to the right at the position of the first screw hole on the left side of the first clamping member. A first limiting rod is provided on the first mounting block, which passes through the first screw hole and extends to the range of the first limiting hole. The first mounting block, the first limiting hole and the first limiting rod constitute the above-mentioned limiting structure.
4. The card holder clamping and polishing jig according to claim 2, characterized in that: An adjustment block extending in the front-to-back direction is provided on the right side of the second clamping member, and the adjustment block is locked on the mounting seat in a manner that it can be adjusted and moved left and right. A tensioning spring is provided between the adjustment block and the second clamping member. Several tensioning springs are provided, and each tensioning spring is arranged at intervals in the front-to-back direction. Both end portions of the tensioning spring are respectively connected to the adjustment block and the second clamping member and extend into the adjustment block and the second clamping member. The adjustment block and the tensioning spring constitute the above-mentioned elastic mechanism.
5. The card holder clamping and polishing jig according to claim 4, characterized in that: The right side of the top surface of the mounting seat is locked with a second mounting block on the right side of the adjusting block, and the second mounting block is provided with a second screw hole running through it in the left and right directions. A second limiting hole is recessed to the left at the position of the second screw hole on the right side of the adjusting block, and the second mounting block is provided with a second limiting screw that passes through the second screw hole and extends into the range of the second limiting hole.
6. The card holder clamping and polishing jig according to claim 2, characterized in that: The right side of the first clamping member is in close contact with the left side of the workpiece placement plate, and the right side of the first clamping member is a left inclined surface set downward from right to left, and the left side of the workpiece placement plate is a left inclined surface matching the left inclined surface. The left side of the second clamping member is in close contact with the right side of the workpiece placement plate, and the left side of the second clamping member is a right inclined surface set downward from left to right, and the right side of the workpiece placement plate is a right inclined surface matching the right inclined surface. The left inclined surface and the right inclined surface form a horn structure that gradually expands from top to bottom, and the left inclined surface, left inclined surface, right inclined surface and right inclined surface constitute the above-mentioned upward limiting structure.
7. The card holder clamping and polishing jig according to claim 2, characterized in that: The top surface of the mounting seat is provided with locking blocks on both the front and rear sides. The two locking blocks and the top surface of the mounting seat form the above-mentioned accommodating groove. The workpiece placement disk is located between the two locking blocks. The front and rear side surfaces of the workpiece placement disk are recessed with overlapping grooves that lead to the outside of the top surface of the workpiece placement disk. The top surfaces of the two locking blocks are recessed with overlapping grooves that are relatively connected to the overlapping grooves at the positions corresponding to the positioning grooves, and the groove bottoms of the overlapping grooves and the groove bottoms of the overlapping grooves are on the same plane. The locking block is provided with a fixing block that is locked in the overlapping groove and overlapped within the range of the overlapping groove. The fixing block is the above-mentioned downward-pressing fixing part.
8. The card holder clamping and polishing jig according to claim 7, characterized in that: The top surface of the described supporting plate is provided with a plurality of grooves, and the grooves are connected with the grooves of the accommodating groove. The top surface of the described supporting plate is provided with a plurality of grooves, and the grooves are connected with the grooves of the accommodating groove. The grooves are connected with the grooves of the accommodating groove.
9. The card holder clamping and polishing jig according to claim 8, characterized in that: The pressing block has a horizontal portion and a vertical portion, the horizontal portion extends along the front-to-back direction, the vertical portion is located on the left side of the horizontal portion and is perpendicular to the horizontal portion, the front and rear end portions of the horizontal portion extend out of the front and rear sides of the vertical portion, and the front and rear end portions of the horizontal portion are both protruding with an embedded block embedded in the bottom surface of the upper pressure plate, and the vertical portion extends into the pressing groove toward one end of the pressing groove.
10. The card holder clamping and polishing jig according to claim 9, characterized in that: The front side surface and the rear side surface of the vertical portion are both concavely provided with arc grooves, and the two arc grooves are spaced apart from each other on the left and right sides.