A fixture for CNC machining of toothed plates

Abstract

This utility model discloses a fixture for CNC machining of hanging branch tooth plates, including a placement seat and a pressure plate. The top surface of the placement seat has a placement area. The placement seat has a thin plate and clamping arms on both sides of the thin plate recessed in the placement area to accommodate a receiving groove. The placement seat also has clamping arm receiving grooves on both sides of the receiving groove. Each clamping arm receiving groove is connected to the receiving groove. The pressure plate is placed flat on the top surface of the placement seat and is located within the placement area. Part of the clamping arm receiving groove is outside the pressure plate. The placement seat is provided with a clamping structure. The receiving groove is provided with a positioning structure to limit the lateral translation of the hanging branch. The placement seat is provided with a pick-and-place structure in the placement area. Through the positioning structure and the pressure plate, the hanging branch to be processed cannot move laterally or longitudinally. During CNC machining, since the hanging branch to be processed cannot move, the cutting head can stably process the hanging branch, improving the CNC machining accuracy of the hanging branch and effectively improving the processing efficiency. The whole structure is simple and easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of jigs, and in particular to a jig for processing hanging branches. Background Technology

[0002] When processing mobile phone SIM card trays, anodizing is required. During anodizing, each SIM card tray is hung on a mounting bracket, necessitating the use of numerous brackets in the processing. Traditional mounting brackets consist of a thin plate with several spaced-apart strips on both sides along its length. Each strip is composed of two spaced-apart clamping arms with pointed ends forming toothed plates for hanging the SIM card trays. The strips are welded to the thin plate. Because each side of the mounting bracket has at least 20 strips, the spacing between them is small, and the teeth are pointed, welding becomes difficult to avoid worker injuries from the teeth, resulting in low processing efficiency. Furthermore, the welding spacing is manually determined, leading to low processing precision and a high defect rate. To improve the processing efficiency and accuracy of hanging branches, the inventors specifically developed a CNC machining method for hanging branches. This method involves placing the raw material on a machining table and using CNC machining to create the outline of the hanging branch. After the outline is machined, the ends of the hanging strips located on the clamping arms are then precision-machined again using CNC to obtain the toothed plate structure of the hanging strips. Existing CNC finishing heads perform CNC machining on the ends of the clamping arms of hanging branches by placing the branch directly on the worktable, resulting in lower precision during toothed plate machining and hindering the widespread adoption of CNC machining for hanging branches.

[0003] In view of this, the inventors of this case conducted in-depth research on the above-mentioned problems, which led to the creation of this case. Utility Model Content

[0004] The purpose of this invention is to provide a CNC machining fixture for attached tooth plates that is easy to perform CNC machining with high precision and high efficiency.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A fixture for CNC machining of hanging toothed plates includes a placement seat and a pressure plate. The top surface of the placement seat has a placement area for the hanging tooth to be placed flat on it. The top surface of the placement seat has a recessed accommodating groove extending along the length of the hanging tooth and accommodating a thin plate for the hanging tooth and partial portions of the clamping arms on both sides of the thin plate. On both sides of the accommodating groove, the placement seat has several clamping arm accommodating grooves that correspond one-to-one with each clamping arm of the hanging tooth and can accommodate the clamping arms. Each clamping arm accommodating groove is connected to the accommodating groove. The pressure plate is placed flat on the top surface of the placement seat and is located within the placement area, with a portion of the clamping arm accommodating groove outside the pressure plate. The placement seat is provided with a clamping structure that can be pressed onto the pressure plate and can be separated from the pressure plate. The accommodating groove is provided with a positioning structure that limits the lateral translation of the hanging tooth. The placement seat is provided with a retrieval and placement structure at the placement area for easy removal and placement of the hanging tooth.

[0007] The above-mentioned clamping structure is provided in two parts, which are arranged opposite each other and located at both ends of the length of the placement area. Each clamping structure has a clamping block, which is a strip-shaped block and is placed horizontally. A rotation drive device for controlling the rotation of the clamping block is provided below one end of the clamping block, and the rotation drive device is installed on the placement base.

[0008] The aforementioned placement seat has an upper top plate and a support base located below the upper top plate. The rotation drive device is mounted on the upper top plate, and the receiving groove, clamping arm receiving groove, positioning structure and picking and placing structure are all set on the upper top plate.

[0009] The aforementioned rotary drive device is a rotary cylinder, which is vertically installed on the bottom surface of the upper top plate, with the output end of the rotary cylinder extending upwards out of the upper top plate, and one end of the clamping block being fixedly connected to the output end of the rotary cylinder.

[0010] The top surface of the aforementioned upper plate is recessed and has an inner strip-shaped groove and an outer strip-shaped groove extending in the left and right direction. The inner strip-shaped groove is the receiving groove. The inner strip-shaped groove and the outer strip-shaped groove are spaced apart. The upper plate has several extended through grooves between the inner strip-shaped groove and the outer strip-shaped groove. These extended through grooves are connected to both the inner strip-shaped groove and the outer strip-shaped groove and correspond to and accommodate each clamp arm of the hanging branch. The extended through grooves are the clamp arm receiving grooves.

[0011] The aforementioned inner strip groove is provided with two strips, and the outer strip groove is provided with three strips. The three outer strip grooves are arranged at intervals along the front and back direction. There is one inner strip groove between two adjacent outer strip grooves. Each inner strip groove has several extended through grooves on its front and back sides. The extended through grooves that are on the same straight line and arranged at intervals on the left and right constitute through groove rows. Each extended through groove forms four rows of through groove rows arranged at intervals on the front and back.

[0012] The aforementioned pressure plate is a strip plate extending in the left-right direction. The four-way slots are divided into a first slot, a second slot, a third slot, and a fourth slot from front to back. The width of the pressure plate in the front-back direction is less than the maximum distance between the first and fourth slots, but greater than the minimum distance between the first and fourth slots. The pressure plate has a strip-shaped through hole extending in the left-right direction between the second and third slots. The width of the strip-shaped through hole in the front-back direction is greater than the minimum distance between the second and third slots, but less than the maximum distance between the second and third slots. Each extended slot of the slot is within the range of the strip-shaped through hole.

[0013] The length of the aforementioned pressure plate is greater than the length of the placement area in the left and right directions. The top surface of the upper plate is locked with vertically installed positioning posts on the left and right sides of the placement area. The bottom surface of the aforementioned pressure plate is recessed with positioning holes for the positioning posts to be accommodated.

[0014] The aforementioned top plate is locked on the bottom of the inner strip groove with a limiting post that can pass through the hanging thin plate, and the bottom surface of the pressure plate is recessed with a receiving hole corresponding to the limiting post for the limiting post to extend into. This limiting post is the positioning structure.

[0015] The top surface of the aforementioned upper plate has two recessed grooves on the left and right sides of the inner strip groove, which are spaced apart from each other. The four recessed grooves constitute the aforementioned pick-up and put-down structure.

[0016] After adopting the above technical solution, the present invention provides a CNC machining fixture for a toothed plate with a hanging branch. In application, the hanging branch to be processed is placed in the placement area, with the thin plate of the hanging branch and part of the clamping arm within the receiving groove. The positioning structure cooperates with the hanging branch to limit its lateral movement. Simultaneously, the remaining part of the clamping arm is within the clamping arm receiving groove, and the toothed plate of the clamping arm extends outside the clamping arm receiving groove. Then, a pressure plate is placed flat on the hanging branch, with the gear outside the pressure plate. The clamping structure is activated to press the pressure plate downwards. Through the positioning structure and the pressure plate, the hanging branch cannot move laterally or longitudinally. Finally, the hanging branch is CNC machined. During CNC machining, because the hanging branch cannot move laterally or longitudinally, the CNC cutting head's machining of the hanging branch is stable, improving the high CNC machining accuracy and effectively increasing processing efficiency. Furthermore, the entire structure is simple and easy to operate. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a schematic diagram of the present invention without the pressure plate. Detailed Implementation

[0019] This utility model provides a fixture for CNC machining of toothed plates with attached branches, such as... Figure 1, 2 As shown, the device includes a placement base 1 and a pressure plate 2. The top surface of the placement base 1 has a placement area for the hanging branch 100 to be placed flat. The top surface of the placement base 1 has a recessed receiving groove 111 at the placement area, which extends along the length of the hanging branch 100 and accommodates a thin plate 101 for hanging the branch and partial portions of the clamping arms 102 on both sides of the thin plate. Furthermore, the placement base 1 has several recessed clamping arms at both sides of the receiving groove, which correspond one-to-one with each clamping arm 102 of the hanging branch 100 and can accommodate the clamping arms. The receiving groove 112 is connected to the receiving groove of each clamping arm. Specifically, the placement seat 1 has an upper top plate 11 and a support seat 12 located below the upper top plate. The upper top plate 11 is a rectangular plate with its length direction as the left-right direction and its width direction as the front-back direction. The support seat 12 is a vertically arranged square plate that is locked together with the upper top plate. To improve the stability of the placement seat, two support seats 12 are provided, which are spaced apart from each other on the left and right. The upper top plate 11 has a recessed inner strip groove extending in the left-right direction in the middle area of ​​its top surface. The inner strip groove has a rectangular structure and is the receiving groove. Extending grooves extend outward from the front and rear sides of the inner strip groove, which correspond to and match each clamping arm of the hanging branch and are connected to the inner strip groove. The extending grooves are the clamping arm receiving grooves 112. In this invention, to prevent damage during CNC machining, outer strip grooves 113 extending in the left-right direction of the inner strip groove 111 are respectively provided on the front and rear sides of the inner strip groove 111. There are several clamping arm receiving grooves 112 arranged at intervals in the left-right direction between the outer strip grooves 113 and the inner strip groove 111. That is, the inner strip groove 111 is located between the two outer strip grooves 113, and the inner strip groove 111 and the two outer strip grooves 113 are connected by the clamping arm receiving grooves 112. The shape of the clamping arm receiving grooves 112 is the same as the shape of the clamping arm 102 of the hanging branch. The thin plate of the hanging branch and part of the clamping arm are placed in the inner strip groove 111, and the lower part of the clamping arm 102 is placed in the clamping arm receiving groove 112. The toothed plate 103 to be processed in the hanging branch is located in the outer strip groove 113.

[0020] The pressure plate 2 is placed flat on the top surface of the placement base 1 and within the placement area, with a portion of the clamping arm receiving groove 111 outside the pressure plate. Specifically, the pressure plate 2 is a rectangular plate extending in the left-right direction. The length of the pressure plate in the left-right direction is greater than the length of the inner strip groove in the left-right direction. The width of the pressure plate 2 in the front-back direction is greater than the minimum distance between the two front and rear extension grooves, but less than the maximum distance between the two front and rear extension grooves. That is, the front edge of the pressure plate 2 is at the rear of the front extension groove, and the rear edge of the pressure plate is at the front of the rear extension groove. In this invention, the top surface of the upper top plate 11 is locked with vertically arranged positioning posts 114 on the left and right sides of the placement area. The bottom surface of the pressure plate 2 is recessed with positioning holes (not shown in the figure) for the positioning posts to be accommodated. The positioning posts and positioning holes cooperate to guide the placement of the pressure plate 2.

[0021] The placement seat 1 is provided with a clamping structure 3 that can be pressed onto the pressure plate 2 and can be separated from the pressure plate 2. The receiving groove 111 is provided with a positioning structure that limits the lateral translation of the hanging branch. The placement seat is provided with a retrieval structure at the placement area to facilitate the removal and placement of the hanging branch. Specifically, there are two clamping structures, which are arranged opposite each other at both ends of the length of the placement area, that is, clamping structures are provided at both the left and right ends of the placement area. Each clamping structure has a clamping block 31, which is a strip-shaped block and is placed horizontally. That is, the clamping block 31 is a rectangular block that extends left and right. A rotation drive device for controlling the rotation of the clamping block is provided below one end of the clamping block, and the rotation drive device is mounted on the placement seat 1. The first end of the pressing block 31 is located on one end of the pressure plate 2, and the second end of the pressing block 31 is provided with a rotary drive device. The rotary drive device is installed on the upper top plate 11. This rotary drive device is a rotary cylinder 32. The rotary cylinder 32 is vertically installed on the bottom surface of the upper top plate 11, and the output end of the rotary cylinder 32 extends upward through the upper top plate 11. The second end of the pressing block 31 is fixedly connected to the output end of the rotary cylinder 32. When in use, the rotary cylinder 32 is started, and the rotary cylinder 32 can drive the pressing block 31 to rotate, so that the first end of the pressing block 31 is pressed against the pressure plate 2, or the rotary cylinder 32 drives the first end of the pressing block 31 away from the pressure plate 2 and separates it from the pressure plate 2.

[0022] Both the positioning structure and the pick-and-place structure are set on the upper top plate 11. Specifically, the upper top plate 11 has a limiting post 115 locked on the bottom of the inner strip groove 111, which is capable of passing through the thin plate 101 through which the hanging branch can be placed. The bottom surface of the pressure plate 2 is recessed with a receiving hole 21 for the limiting post 115 to extend into. This limiting post 115 is the positioning structure, that is, the limiting post 115 is a cylindrical structure and is set vertically. The upper part of the limiting post 105 is above the top surface of the upper top plate 11, and the lower part of the limiting post 115 extends into the upper top plate 11. The bottom surface of the upper top plate is screwed with a locking screw that extends into the lower part of the limiting post 115. The upper end of the limiting post 115 extends upward with a convex arc positioning head that gradually narrows from bottom to top. The outer wall of the thin plate 101 is recessed with a semi-circular notch corresponding to the limiting post 115 for the limiting post 15 to pass through. In application, when the hanging branch is placed in the inner strip groove 111, the limiting post 115 can pass through the semi-circular notch on the thin plate 101. Finally, the pressure plate 2 is placed on the hanging branch 100. At this time, the limiting post 115 extends into the receiving hole 21, so that the pressure plate 2 and the hanging branch are in close contact. That is, the limiting post 115 is used to prevent the hanging branch from moving in the left and right directions after it is placed, ensuring the stability of the hanging branch during CNC machining and improving machining accuracy.

[0023] The top surface of the upper plate 11 has two recessed lower grooves 116 on the left and right sides of the inner strip groove 111, which are spaced apart from each other. The four lower grooves 116 constitute the picking and placing structure. Preferably, the distance between two adjacent lower grooves 116 is less than the width of the thin plate 101. In this way, the two sides of the end of the thin plate 101 are respectively within the range of the two lower grooves 116. That is, when the hanging branch 100 is processed, the worker or robot can quickly pick up the hanging branch from the lower groove 116, thereby improving production efficiency.

[0024] This utility model discloses a CNC machining fixture for a toothed plate with a hanging branch. In application, the thin plate to be machined is first placed in the inner strip groove 111, with part of the clamping arm 102 positioned within the inner strip groove 111 and the remaining part within each extending through groove 12. The toothed plate 103 is located within the outer strip groove 113, and the limiting post 115 engages with the semi-circular notch of the thin plate 101. Then, the pressure plate 2 is placed flat on the hanging branch to be machined, guided by the positioning post 114, with the toothed plate 103 outside the pressure plate 2. The rotary cylinder 32 is activated, causing the clamping block to rotate 90 degrees, pressing the second end of the clamping block against the pressure plate 2. Finally, the CNC machining head can be inserted into the outer strip groove 113 to perform CNC machining on the toothed plate 103 with the hanging branch. Compared with the prior art, this new CNC machining fixture for hanging branches can press the hanging branch to be processed firmly by the pressure plate 2, preventing it from jumping up and down. In addition, the limiting post 115 prevents the hanging branch from moving left and right. That is, during CNC machining, the hanging branch is completely fixed and will not shift or jump, making the CNC machining head stable in processing the hanging branch and effectively improving the CNC machining accuracy of the hanging branch. In addition, the entire operation process only requires the removal and placement of the pressure plate 2, which is simple to operate. The whole structure is simple and easy to process and produce. Furthermore, the removal and placement structure makes it convenient to remove and place the hanging branch.

[0025] In this invention, two inner strip grooves 111 and three outer strip grooves 113 are provided. The three outer strip grooves 113 are arranged at intervals along the front-to-back direction. There is an inner strip groove 111 between two adjacent outer strip grooves 113. Each inner strip groove 111 has several extended through grooves 112 on its front and back sides. The extended through grooves 12 arranged on the same straight line and spaced apart to the left and right constitute a through groove row. The extended through grooves form four rows of through groove rows arranged at intervals from front to back. The four through groove rows are divided into a first groove row, a second groove row, a third groove row, and a fourth groove row from front to back. The width of the pressure plate 2 in the front-to-back direction is less than the maximum distance between the first and fourth slot rows, but greater than the minimum distance between them. The pressure plate 2 has a strip-shaped through hole 22 extending in the left-to-right direction between the second and third slot rows. The width of the strip-shaped through hole 22 in the front-to-back direction is greater than the minimum distance between the second and third slot rows, but less than the maximum distance between them. Each extending slot of the slot row is within the range of the strip-shaped through hole 22. This structure allows the fixture to hold two hanging branches for processing at once, further improving processing efficiency. In this new invention, the strip-shaped through hole 22 is preferably a trumpet-shaped through hole, wider at the top and narrower at the bottom, which facilitates the insertion of the CNC cutting head into the strip-shaped through hole 22 for processing.

[0026] In this invention, the top of the positioning post 114 is conical, which allows the positioning hole of the positioning post pressure plate 2 to be quickly aligned with the positioning post 114.

[0027] The product form of this utility model is not limited to the illustrations and embodiments in this case. Any appropriate changes or modifications made to it based on similar ideas should be considered as not departing from the patent scope of this utility model.

Claims

1. A fixture for CNC machining of toothed plates with attached branches, characterized in that: The device includes a placement base and a pressure plate. The top surface of the placement base has a placement area for hanging branches to lie flat on. The top surface of the placement base has a recessed groove extending along the length of the hanging branch, which accommodates a thin plate for hanging the branch and parts of the clamping arms on both sides of the thin plate. On both sides of the placement groove, the placement base has several clamping arm receiving grooves that correspond one-to-one with each clamping arm of the hanging branch and can accommodate the clamping arms. Each clamping arm receiving groove is connected to the receiving groove. The pressure plate is placed flat on the top surface of the placement base and is located within the placement area, with parts of the clamping arm receiving grooves outside the pressure plate. The placement base has a pressing structure that can be pressed onto the pressure plate and can be separated from the pressure plate. The receiving groove has a positioning structure that limits the lateral movement of the hanging branch. The placement base has a retrieval structure at the placement area for easy removal and placement of the hanging branch.

2. A fixture for CNC machining of toothed plates according to claim 1, characterized in that: The above-mentioned clamping structure is provided in two parts, which are arranged opposite each other and located at both ends of the length of the placement area. Each clamping structure has a clamping block, which is a strip-shaped block and is placed horizontally. A rotation drive device for controlling the rotation of the clamping block is provided below one end of the clamping block, and the rotation drive device is installed on the placement base.

3. A fixture for CNC machining of toothed plates according to claim 2, characterized in that: The aforementioned placement seat has an upper top plate and a support base located below the upper top plate. The rotation drive device is mounted on the upper top plate, and the receiving groove, clamping arm receiving groove, positioning structure and picking and placing structure are all set on the upper top plate.

4. A fixture for CNC machining of toothed plates according to claim 3, characterized in that: The aforementioned rotary drive device is a rotary cylinder, which is vertically installed on the bottom surface of the upper top plate, with the output end of the rotary cylinder extending upwards out of the upper top plate, and one end of the clamping block being fixedly connected to the output end of the rotary cylinder.

5. A fixture for CNC machining of toothed plates according to claim 3, characterized in that: The top surface of the aforementioned upper plate is recessed and has an inner strip-shaped groove and an outer strip-shaped groove extending in the left and right direction. The inner strip-shaped groove is the receiving groove. The inner strip-shaped groove and the outer strip-shaped groove are spaced apart. The upper plate has several extended through grooves between the inner strip-shaped groove and the outer strip-shaped groove. These extended through grooves are connected to both the inner strip-shaped groove and the outer strip-shaped groove and correspond to and accommodate each clamp arm of the hanging branch. The extended through grooves are the clamp arm receiving grooves.

6. A fixture for CNC machining of toothed plates according to claim 5, characterized in that: The aforementioned inner strip groove is provided with two strips, and the outer strip groove is provided with three strips. The three outer strip grooves are arranged at intervals along the front and back direction. There is one inner strip groove between two adjacent outer strip grooves. Each inner strip groove has several extended through grooves on its front and back sides. The extended through grooves that are on the same straight line and arranged at intervals on the left and right constitute through groove rows. Each extended through groove forms four rows of through groove rows arranged at intervals on the front and back.

7. A fixture for CNC machining of toothed plates according to claim 6, characterized in that: The aforementioned pressure plate is a strip plate extending in the left-right direction. The four-way slots are divided into a first slot, a second slot, a third slot, and a fourth slot from front to back. The width of the pressure plate in the front-back direction is less than the maximum distance between the first and fourth slots, but greater than the minimum distance between the first and fourth slots. The pressure plate has a strip-shaped through hole extending in the left-right direction between the second and third slots. The width of the strip-shaped through hole in the front-back direction is greater than the minimum distance between the second and third slots, but less than the maximum distance between the second and third slots. Each extended slot of the slot is within the range of the strip-shaped through hole.

8. A fixture for CNC machining of toothed plates according to claim 6, characterized in that: The length of the aforementioned pressure plate is greater than the length of the placement area in the left and right directions. The top surface of the upper plate is locked with vertically installed positioning posts on the left and right sides of the placement area. The bottom surface of the aforementioned pressure plate is recessed with positioning holes for the positioning posts to be accommodated.

9. A fixture for CNC machining of toothed plates according to claim 6, characterized in that: The aforementioned top plate is locked on the bottom of the inner strip groove with a limiting post that can pass through the hanging thin plate, and the bottom surface of the pressure plate is recessed with a receiving hole corresponding to the limiting post for the limiting post to extend into. This limiting post is the positioning structure.

10. A fixture for CNC machining of toothed plates according to claim 5, characterized in that: The top surface of the aforementioned upper plate has two recessed grooves on the left and right sides of the inner strip groove, which are spaced apart from each other. The four recessed grooves constitute the aforementioned pick-up and put-down structure.

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