Chair back processing clamping and pushing tool

Abstract

The utility model discloses a kind of chair back processing clamping and pushing tool, including bottom plate, compression element and limit block, the front side of bottom plate is the arc-shaped edge compatible with finished product chair back arc, limit block is arranged along arc-shaped edge, compression element is carried out to the chair back to be processed Compression limit. When clamping, the chair back to be processed is placed in bottom plate, its inner arc surface is stopped limit block with two end surfaces, then can be fixed after being held by compression element. When processing, worker holds tool to double-shaft woodworking milling machine, arc-shaped edge is stopped below cushion block of milling cutter, push along arc-shaped edge, so that arc-shaped edge always stops cushion block outside, milling cutter can mill the excess part of chair back protruding from arc-shaped edge, satisfy outside arc surface processing demand. The chair back processing clamping and pushing tool uses arc-shaped edge as chair back arc-shaped processing jig, can accurately process chair back arc, compression element and limit block cooperate to limit the chair back to be processed, effectively prevent the error generated by the chair back to be processed due to shaking or displacement, overall improve the processing efficiency and accuracy of arc-shaped chair back.

Description

Technical Field

[0001] This utility model relates to the field of chair back processing technology, and in particular to a chair back processing clamping and pushing tool. Background Technology

[0002] Currently, when machining curved chair backs, there is usually a lack of specially adapted clamping fixtures, and simple support and pressing methods are often used to fix the workpiece. Because the chair back is curved, the existing clamping methods are difficult to effectively adapt to the curved contour of the chair back, causing the workpiece to easily shift in the left-right and front-back directions. At the same time, pressing in the up-down direction often causes the workpiece to wobble during the machining process due to uneven force or inaccurate positioning.

[0003] Workpiece offset and wobbling can directly cause a series of problems: on the one hand, the dimensional accuracy of the processed chair back is difficult to guarantee, and the processing error is prone to exceed the standard, affecting the assembly compatibility of the chair back and the chair frame; on the other hand, workpiece wobbling may also cause the relative position between the milling cutter and the workpiece to be unstable, which will not only reduce the surface finish of the processed surface, but may even cause the milling cutter to break or the workpiece to be scrapped, increasing production costs and reducing overall processing efficiency.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a chair back processing clamping and pushing tool, which aims to solve the technical problem of difficulty in accurate and stable clamping in the milling of curved chair backs in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A chair back processing clamping and pushing fixture includes a base plate, on which a plurality of clamping components and limiting blocks are provided. The front side of the base plate is provided with an arc-shaped edge that matches the arc shape of the finished chair back. The clamping components are used to clamp the chair back to be processed to limit its vertical movement. The plurality of limiting blocks are provided along the arc-shaped edge and spaced a certain distance from the arc-shaped edge. The limiting blocks are used to limit the chair back to be processed in the left-right and front-back directions.

[0008] The chair back processing clamping and pushing fixture mentioned above, wherein the distance between the limiting block and the arc edge is equal to the width of the finished chair back, and several limiting blocks respectively abut against the inner arc surface and two end faces of the chair back to be processed.

[0009] The chair back processing clamping and pushing fixture has a base plate thickness equal to the distance between the milling machine worktable and the bottom of the milling cutter used for processing the chair back.

[0010] The chair back processing clamping and pushing fixture includes a clamping component comprising a fixed seat, a handle, a connecting rod, and a pressure arm. The fixed seat is fixedly installed on the base plate. One end of the connecting rod is hinged to the fixed seat, and the other end of the connecting rod is hinged to the handle. The handle is hinged to the pressure arm, and the pressure arm is hinged to the fixed seat. A pressure bar is provided at the end of the pressure arm away from the fixed seat, and the pressure bar is used to press the chair back to be processed.

[0011] The chair back processing clamping and pushing fixture includes a clamping component that is fixedly disposed at the end of the pressure rod to contact the chair back to be processed and avoid damage to the surface of the chair back.

[0012] The chair back processing clamping and pushing fixture includes an elastic element, the two ends of which are fixedly connected to the fixed seat and the pressure arm, respectively.

[0013] The chair back processing clamping and pushing fixture also includes a handle, which is fixed to the base plate for workers to hold and move the entire fixture.

[0014] Beneficial effects:

[0015] This utility model provides a chair back processing clamping and pushing fixture, including a base plate, a clamping component, and a limiting block. The front side of the base plate has an arc-shaped edge that matches the curvature of the finished chair back. The limiting block is set along the arc-shaped edge, and the clamping component clamps and limits the chair back to be processed. During clamping, the chair back to be processed is placed on the base plate, and the inner arc surface of the chair back to be processed abuts against the limiting block with its two end faces respectively. Then, the clamping component holds the chair back to be processed, thus clamping and fixing it. During processing, the worker holds the clamping and pushing fixture to a dual-axis woodworking milling machine for processing. The arc-shaped edge on the front side of the base plate can abut against the pad below the milling cutter. The worker pushes the clamping and pushing fixture along the arc-shaped edge, so that the arc-shaped edge always abuts against the outer side of the pad. The milling cutter then mills the excess part of the chair back to be processed that protrudes from the arc-shaped edge, thereby making the outer arc surface of the chair back meet the processing requirements. This chair back processing clamping and pushing fixture uses an arc-shaped edge on the front side of the base plate as a fixture for processing the curved chair back. It can accurately and conveniently process the curved chair back that meets the requirements. The clamping part and the limiting block cooperate to limit and fix the chair back to be processed, effectively preventing errors caused by shaking or displacement of the chair back to be processed, and improving the processing efficiency and accuracy of the curved chair back as a whole. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of the chair back processing clamping and pushing tool provided by this utility model;

[0017] Figure 2 A top view of the tooling provided by this utility model when clamping the chair back;

[0018] Figure 3A right-side view of the tooling provided by this utility model when it is used to process a chair back.

[0019] Figure 4 A three-dimensional structural diagram of the clamping component provided by this utility model when clamping is achieved;

[0020] Figure 5 A three-dimensional structural diagram of the clamping component provided by this utility model when it is released from clamping.

[0021] Figure label:

[0022] 1—Base plate 2—Clamping component 3—Limiting block

[0023] 4—Chair back to be processed; 5—Milling machine worktable; 11—Curved edge

[0024] 12—Handle 21—Fixed base 22—Handle

[0025] 23—Connecting rod 24—Pressure arm 25—Pressure rod

[0026] 26—Buffer component 27—Elastic component 51—End mill cutter

[0027] 52—Place block. Detailed Implementation

[0028] This utility model provides a clamping and pushing tooling for chair back processing. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0030] Please see Figures 1 to 3As shown, this utility model provides a chair back processing clamping and pushing fixture, which includes a base plate 1, on which a plurality of clamping members 2 and limiting blocks 3 are provided. The front side of the base plate 1 is provided with an arc-shaped edge 11 adapted to the arc shape of the finished chair back. The clamping members 2 are used to clamp the chair back 4 to be processed to limit its vertical direction. The plurality of limiting blocks 3 are arranged along the arc-shaped edge 11 and spaced at a certain distance from the arc-shaped edge 11. The limiting blocks 3 are used to limit the chair back 4 to be processed in the left-right and front-back directions. In this embodiment, the chair back processing clamping and pushing fixture is used in the processing of an MX5317B dual-axis woodworking milling machine to clamp and push the chair back 4 to be processed. A pad block 52 with the same outer diameter as the milling cutter 51 is provided below the milling cutter 51 of the milling machine. The pad block 52 is used to cooperate with the arc-shaped edge 11 of the pressure plate to form the processing stroke of the chair back arc. The base plate 1 is made of wood, and the curvature of the curved edge 11 can be adapted and changed according to the production requirements of the chair back 4 to be processed. The clamping part 2 is fixed to the base plate 1 with screws. According to the actual thickness of the chair back 4 to be processed, a pad can be selectively added to the bottom of the clamping part 2 so that the clamping part 2 is suitable for clamping chair backs of different thicknesses. The limiting block 3 is also made of wood and can be fixed to the base plate 1 with nails. In order to adapt to the inner curved surface of the chair back, the contact surface between the limiting block 3 and the chair back can be set to a matching curved surface.

[0031] During clamping, the chair back 4 to be processed is placed on the base plate 1, and the inner arc surface of the chair back 4 is made to abut against the two end faces of the contact limiting blocks 3 respectively. Then, it is held by the clamping member 2 to achieve clamping and fixing of the chair back 4. During processing, the worker holds the clamp and pushes the fixture to the dual-axis wood milling machine for processing. The arc-shaped edge 11 on the front side of the base plate 1 can abut against the pad 52 below the milling cutter 51. The worker pushes the fixture along the arc-shaped edge 11, so that the arc-shaped edge 11 always abuts against the outside of the pad 52. The milling cutter 51 then mills the excess part of the chair back 4 protruding from the arc-shaped edge 11, so that the outer arc surface of the chair back meets the processing requirements. This chair back processing clamping and pushing fixture uses an arc-shaped edge 11 on the front side of the base plate 1 as a chair back arc processing fixture, which can accurately and conveniently process the chair back arc that meets the conditions. The clamping part 2 and the limiting block 3 cooperate to limit and fix the chair back 4 to be processed, effectively preventing the chair back 4 to be processed from errors caused by shaking or displacement, thus improving the overall processing efficiency and accuracy of the arc chair back.

[0032] Please see Figures 1 to 3 As shown, the distance between the limiting block 3 and the arc edge 11 is equal to the width of the finished chair back. Several limiting blocks 3 respectively abut against the inner arc surface and two end faces of the chair back 4 to be processed, so that the outer side of the chair back 4 to be processed protrudes beyond the arc edge 11 of the base plate 1. The protruding part is the excess part of the desired finished chair back, which needs to be removed by milling to obtain a chair back with the outer arc shape meeting the requirements.

[0033] Please see Figure 3 As shown, the thickness of the base plate 1 is equal to the distance between the milling machine table 5 used for machining the chair back and the bottom of the milling cutter 51, that is, the thickness of the pad 52. This thickness design allows the base plate 1 and the pad 52 to fit together while avoiding the milling cutter 51 milling to the base plate 1 due to the base plate 1 being too thick, affecting the machining accuracy, or the milling cutter 51 not machining the chair back properly due to the base plate 1 being too thin.

[0034] Please see Figure 1 , Figures 4 to 5 As shown, the clamping component 2 includes a fixed base 21, a handle 22, a connecting rod 23, and a pressure arm 24. The fixed base 21 is fixedly installed on the base plate 1. One end of the connecting rod 23 is hinged to the fixed base 21, and the other end of the connecting rod 23 is hinged to the handle 22. The handle 22 is hinged to the pressure arm 24, and the pressure arm 24 is hinged to the fixed base 21. A pressure rod 25 is provided at the end of the pressure arm 24 away from the fixed base 21. The pressure rod 25 is used to press the chair back 4 to be processed. In this embodiment, the hinges between the connecting rod 23, the fixed base 21, the handle 22, and the pressure arm 24 are achieved by connecting the hinge shaft to the shaft hole provided therein. The connecting rod 23 allows the handle 22 and the pressure arm 24 to swing up and down and move back and forth simultaneously, so that the pressure rod 25 can accurately press the chair back 4 to be processed. When the handle 22 is lifted, the front end of the handle 22 presses down the rear end of the pressure arm 24, and the front end of the pressure arm 24 tilts upward. At the same time, the connecting rod 23 causes the handle 22 to pull the pressure arm 24 backward, ultimately causing the pressure rod 25 to move away from the upper surface of the chair back 4 to be processed, thus releasing the pressure limit on the chair back 4 to be processed. When the handle 22 is pressed down, the front end of the handle 22 lifts the rear end of the pressure arm 24, and the rear end of the pressure arm 24 presses down. At the same time, the connecting rod 23 causes the handle 22 to push the pressure arm 24 forward, ultimately causing the pressure rod 25 to approach and press against the upper surface of the chair back 4 to be processed, thus achieving the pressure limit on the chair back 4 to be processed.

[0035] Please see Figure 1 , Figures 4 to 5 As shown, the clamping member 2 also includes a buffer member 26, which is fixedly disposed at the end of the pressure rod 25 to contact the chair back 4 to be processed and prevent damage to the surface of the chair back. In this embodiment, the buffer member 26 is made of silicone material and is fixedly sleeved on the end of the pressure rod 25, covering the end of the pressure rod 25; the buffer member 26 contacts the chair back 4 to be processed, preventing the pressure rod 25 from scratching or crushing the surface of the chair back.

[0036] Please see Figure 1 , Figures 4 to 5As shown, the clamping member 2 also includes an elastic member 27, with both ends of the elastic member 27 fixedly connected to the fixed base 21 and the pressure arm 24, respectively. In this embodiment, the elastic member 27 is a spring, with one spring provided on each side of each clamping member 2, and the two ends of the spring hooked onto the protrusions of the pressure arm 24 and the fixed base 21, respectively. By providing the elastic member 27, the pressure arm 24 is limited by the elastic force of the elastic member 27 whether in the pressed state or the lifted state, thus improving the working stability of the clamping member 2. In some other embodiments, the elastic member 27 can also be an elastic tape.

[0037] Please see Figures 1 to 2 As shown, it also includes a handle 12, which is fixed to the base plate 1 and is used by workers to hold and move the entire tooling. In this embodiment, the handle 12 is fixed to the base plate 1 by welding and is also welded to the rear side of the fixing seat 21. There are two handles 12, which makes it convenient for workers to grab and move the tooling.

[0038] In summary, this utility model uses an arc-shaped edge 11 on the front side of the base plate 1 as a jig for processing the arc shape of the chair back, which can accurately and conveniently process the arc shape of the chair back that meets the requirements. The clamping part 2 and the limiting block 3 cooperate to limit and fix the chair back 4 to be processed, effectively preventing the chair back 4 to be processed from errors caused by shaking or displacement, thus improving the processing efficiency and accuracy of the arc-shaped chair back.

[0039] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A chair back processing clamping and pushing tool, characterized in that, Includes a base plate (1), on which are provided several clamping parts (2) and limiting blocks (3). The front side of the base plate (1) is an arc-shaped edge (11) that matches the arc shape of the finished chair back. The clamping parts (2) are used to clamp the chair back (4) to be processed to limit its vertical movement. Several limiting blocks (3) are set along the arc-shaped edge (11) and spaced a certain distance from the arc-shaped edge (11). The limiting blocks (3) are used to limit the chair back (4) to be processed in the left, right and front and back directions.

2. The chair back processing clamping and pushing fixture according to claim 1, characterized in that, The distance between the limiting block (3) and the arc edge (11) is equal to the width of the finished chair back. Several limiting blocks (3) respectively abut against the inner arc surface and two end faces of the chair back (4) to be processed.

3. The chair back processing clamping and pushing fixture according to claim 1, characterized in that, The thickness of the base plate (1) is equal to the distance from the bottom of the milling machine table (5) used for machining the chair back to the bottom of the milling cutter (51).

4. The chair back processing clamping and pushing fixture according to claim 1, characterized in that, The clamping component (2) includes a fixed base (21), a handle (22), a connecting rod (23), and a pressure arm (24). The fixed base (21) is fixedly installed on the base plate (1). One end of the connecting rod (23) is hinged to the fixed base (21), and the other end of the connecting rod (23) is hinged to the handle (22). The handle (22) is hinged to the pressure arm (24), and the pressure arm (24) is hinged to the fixed base (21). A pressure rod (25) is provided at the end of the pressure arm (24) away from the fixed base (21). The pressure rod (25) is used to press the chair back (4) to be processed.

5. The chair back processing clamping and pushing fixture according to claim 4, characterized in that, The clamping member (2) also includes a buffer member (26), which is fixedly installed at the end of the pressure rod (25) and is used to contact the chair back (4) to be processed in order to avoid damaging its surface.

6. The chair back processing clamping and pushing fixture according to claim 4, characterized in that, The clamping component (2) also includes an elastic component (27), the two ends of which are fixedly connected to the fixed base (21) and the pressure arm (24) respectively.

7. The chair back processing clamping and pushing fixture according to claim 1, characterized in that, It also includes a handle (12), which is fixed to the base plate (1) for workers to hold and move the entire tooling.

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