Machining jig
By designing a machining fixture that includes a base, positioning support components, and a pressing unit, the problem of incomplete workpiece positioning during processing was solved, achieving all-round positioning of the workpiece and stable fixation of the processing area, thus improving processing accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU SONGXIANG DIANTONG TECH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-17
AI Technical Summary
Existing fixtures are difficult to use to limit and fix the workpiece around the machining area during machining, which leads to workpiece deformation and affects machining accuracy.
Design a machining fixture comprising a base, a positioning support, and a pressing unit. The positioning support horizontally positions the workpiece, and the pressing block limits its movement in the vertical direction. Combined with a rotary actuator, the pressing block's state is switched to ensure that the outer perimeter of the machining area is fixed and to prevent deformation.
It achieves omnidirectional positioning of the workpiece and stable fixation of the processing area, improving machining accuracy and ensuring the stability and precision of the machining process.
Smart Images
Figure CN224129188U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of jig technology, and in particular to a machining jig. Background Technology
[0002] Fixtures are widely used in machining to position and fix workpieces, preventing positional shifts during processing. Typically, fixtures limit or clamp the workpiece from all four sides to achieve positioning, with the workpiece positioned away from the machining area. However, due to the workpiece's structural design or strength limitations, the machining area may lack perimeter fixation. During machining, the force applied by the cutting tool can cause deformation, affecting machining accuracy and making it difficult to meet precision requirements. Utility Model Content
[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a machining fixture that can position the workpiece in all directions and press down and fix the periphery of the machining area on the workpiece to prevent deformation, improve the machining accuracy of the workpiece, and effectively meet the precision requirements of machining.
[0004] The technical solution of this utility model is achieved as follows: a machining fixture, including a base, a positioning and bearing component, and a pressing unit;
[0005] The positioning support is mounted on the base and is used to insert and position the workpiece from the top and bottom.
[0006] The pressing unit is disposed on both sides of the positioning support member and includes a pressing block and a driver;
[0007] The pressing block is disposed above the positioning support member and has a pressing state in which a pressing space is formed between it and the positioning support member in the vertical direction, and a avoidance state in which it deviates from the positioning support member.
[0008] The pressing block is provided with a processing clearance opening; in the pressing state, the processing clearance opening is connected vertically to the pressing space, and the processing clearance openings on both sides of the pressing block are arranged to correspond to different areas of the pressing space.
[0009] The driver is connected to the pressure block and is used to drive the pressure block to switch between a pressing state and a yielding state, and to drive the pressure block to move closer to or away from the positioning carrier in the pressing state.
[0010] Between the two pressing units on both sides, when the pressing block on the first side is in the pressing state, the pressing block on the second side is in the avoidance state.
[0011] Furthermore, the pressing unit includes a guide rod; the guide rod is disposed on the base and extends in the vertical direction; the pressing block is provided with a guide hole; in the pressing state, the guide hole and the guide rod are vertically aligned.
[0012] Furthermore, one side of the processing clearance opening is open.
[0013] Furthermore, the driver is used to drive the pressure block to rotate about a central axis to switch between a pressing state and a yielding state.
[0014] Furthermore, the actuator is a rotary pressing cylinder; the pressing block is disposed on the driving end of the actuator.
[0015] Furthermore, the pressing unit includes a stop member; the stop member is disposed on the base; in the pressing state, the stop member corresponds vertically to the pressing block.
[0016] Furthermore, the pressing block is a long-arm structure with two ends; an extension is provided on the first end of the pressing block; in the pressing state, the extension extends along the length direction of the positioning bearing member; the processing clearance is provided on the extension.
[0017] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0018] 1. This utility model, through the use of a positioning mechanism, can limit the workpiece in the horizontal direction. The downward pressure of the pressing block can limit the workpiece in the vertical direction, thereby enabling omnidirectional positioning of the workpiece. By arranging machining clearance openings on the pressing block, the workpiece can be processed through these openings, and the periphery of the processing area on the workpiece is pressed and fixed to prevent deformation, improving the machining accuracy of the workpiece and effectively meeting the precision requirements of machining.
[0019] 2. This utility model uses alternating pressure blocks on both sides to limit and fix the processing areas at different positions on the workpiece, thereby enabling the processing of different processing areas on the workpiece. Furthermore, the movement between the pressure blocks on both sides will not interfere with each other, making the machining process stable, reliable, and highly practical. Attached Figure Description
[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings:
[0021] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;
[0022] Figure 2 for Figure 1 A side view structural diagram;
[0023] Figure 3 for Figure 1 A three-dimensional structural diagram of the workpiece during pressing;
[0024] Figure 4 This is a schematic diagram showing the position of both pressure blocks of this utility model when they are in the pressure state.
[0025] The components include: 1. base; 2. positioning support; 3. lower pressure block; 31. extension; 32. machining clearance; 33. guide hole; 4. driver; 5. guide rod; 6. stop. Detailed Implementation
[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0027] like Figure 1-4 The diagram illustrates a machining fixture according to this embodiment. This fixture is adapted to machining equipment to perform corresponding machining on a workpiece. The fixture includes a base 1, a positioning support 2, and a pressing unit. The positioning support 2 is arranged on the base 1. The specific structure of the positioning support 2 is adapted to the structure of the workpiece, allowing the workpiece to be inserted vertically onto the positioning support 2 for horizontal positioning. For example, when the workpiece has a boss structure, a groove structure is formed on the positioning support 2. Vertical insertion and positioning are achieved by inserting the boss structure on the workpiece into the groove structure on the positioning support 2.
[0028] The aforementioned pressing unit is arranged on both sides of the positioning support member 2. In this embodiment, the pressing unit is arranged on opposite sides of the positioning support member 2. The pressing unit includes a pressing block 3 and a driver 4. The pressing block 3 is movably arranged above the positioning support member 2, having a pressing state in which a pressing space is formed between it and the positioning support member 2 in the vertical direction, and a clearance state in which it is deviated from the positioning support member 2. In the pressing state, the positioning support member 2 is movably arranged vertically to have a pressing position and a disengaged position in the vertical direction. When in the pressing position, the pressing block 3 is close to the positioning support member 2, so that the workpiece can be clamped between the pressing block 3 and the positioning support member 2. When in the disengaged position, the pressing block 3 is away from the workpiece. When the pressing block 3 is in the clearance state, an unobstructed space is formed above the positioning support member 2. The aforementioned pressing block 3 is machined with a clearance opening 32. The clearance opening 32 extends vertically through the pressing block 3. When the pressing block 3 is in the aforementioned pressed state, the machining clearance opening 32 is vertically connected to the pressing space. The machining tool can contact the workpiece through this machining clearance opening 32 to perform machining. Specifically, when both pressing blocks 3 are in the aforementioned pressed state, the machining clearance openings 32 on both pressing blocks 3 are arranged corresponding to different areas of the pressing space. By alternately switching the pressing blocks 3 on both sides, the machining tool can contact different positions of the workpiece through the machining clearance opening 32 to perform machining on different positions of the workpiece. One side of the machining clearance opening 32 is open, allowing the tool to enter the machining clearance opening 32 from the open position.
[0029] The aforementioned pressing block 3 is a long-arm structure with two ends. An extension 31 is formed on the first end of the pressing block 3. In the aforementioned pressing state, the extension 31 extends along the length direction of the positioning support member 2. The length of the extension 31 is adapted to the length of the workpiece so that it can contact and press down at various positions along the length direction of the workpiece, improving the stability of the pressing. The aforementioned machining clearance 32 is arranged on the extension 31.
[0030] In this embodiment, the aforementioned actuator 4 is connected to the pressing block 3 to drive the pressing block 3 to switch between a pressing state and a yielding state, and to drive the pressing block 3 to move closer to or away from the positioning support 2 in the pressing state, thereby realizing the switching of the pressing block 3 between the pressing position and the disengaged position. Specifically, in the structural design, the actuator 4 drives the pressing block 3 to rotate around a central axis to switch between the pressing state and the yielding state. This central axis extends vertically so that the pressing block 3 can rotate on a horizontal plane, thereby switching between the pressing state and the yielding state. In this embodiment, the rotation angle of the pressing block 3 is 90°. The actuator 4 is preferably a conventional rotary pressing cylinder. The pressing block 3 is fixed to the driving end of the actuator 4. The rotary pressing cylinder performs rotational and lifting actions, thereby realizing the corresponding movement of the pressing block 3.
[0031] In this embodiment, the movement between the pressing units on both sides is controlled through reasonable program design. Specifically, when the pressing block 3 on the first side is in the pressing state, the pressing block 3 on the second side is in the avoidance state, so that the pressing blocks 3 on both sides will not interfere with each other during the movement.
[0032] The aforementioned pressing unit includes a guide rod 5. The guide rod 5 is fixed to the base 1 and extends vertically. The guide rod 5 has a preset length. A through-hole 33 is machined into the pressing block 3. When the pressing block 3 is in the pressing state, the guide hole 33 and the guide rod 5 correspond vertically. In this pressing state, as the pressing block 3 moves downwards, the guide rod 5 inserts into the guide hole 33, thereby guiding the movement of the pressing block 3 and improving the stability of its vertical movement. When the pressing block 3 moves upwards to the disengagement position, it disengages from the guide rod 5 and, driven by the driver 4, switches between the pressing state and the avoidance state.
[0033] In this embodiment, the aforementioned pressing unit includes a stop member 6. The stop member 6 is fixed to the base 1. When the pressing block 3 is in the pressing state, the stop member 6 corresponds vertically to the pressing block 3. In this pressing state, as the pressing block 3 moves downward, it contacts the stop member 6 to restrict its downward movement, thereby confining the pressing block 3 to its current position. This current position is the pressing position of the pressing block 3 on the workpiece.
[0034] In practical use, the workpiece is inserted into the positioning support 2 to limit its position horizontally. The driver 4 switches the pressing block 3 of the first pressing unit to the pressing state, then drives the pressing block 3 downwards to contact and press down on the workpiece, thus limiting its position vertically. The machining tool processes the workpiece through the machining clearance 32 of the pressing block 3. After processing, the pressing block 3 is driven upwards to detach from the workpiece, and then switched to the clearance state. Then, the driver 4 switches the pressing block 3 of the second pressing unit to the pressing state, then drives the pressing block 3 downwards to contact and press down on the workpiece. The machining tool again processes the workpiece through the machining clearance 32 of the pressing block 3. After processing, the pressing block 3 is driven to detach from the workpiece, and then the workpiece is removed. In the above method, the workpiece can be positioned in all directions, and the outer periphery of the processing area on the workpiece is pressed down and fixed to prevent deformation and improve the processing accuracy of the workpiece. By alternately using the pressing blocks 3 on both sides, the processing areas at different positions on the workpiece can be limited and fixed, so that the processing areas at different positions on the workpiece can be processed. Moreover, the movement between the pressing blocks 3 on both sides will not interfere with each other. The machining process is stable, reliable and effectively meets the precision requirements of machining.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A machining fixture, comprising a base, a positioning and bearing component, and a pressing unit; characterized in that: The positioning support is mounted on the base and is used to insert and position the workpiece from the top and bottom. The pressing unit is disposed on both sides of the positioning support member and includes a pressing block and a driver; The pressing block is disposed above the positioning support member and has a pressing state in which a pressing space is formed between it and the positioning support member in the vertical direction, and a avoidance state in which it deviates from the positioning support member. The pressing block is provided with a processing clearance opening; in the pressing state, the processing clearance opening is connected vertically to the pressing space, and the processing clearance openings on both sides of the pressing block are arranged to correspond to different areas of the pressing space. The driver is connected to the pressure block and is used to drive the pressure block to switch between a pressing state and a yielding state, and to drive the pressure block to move closer to or away from the positioning carrier in the pressing state. Between the two pressing units on both sides, when the pressing block on the first side is in the pressing state, the pressing block on the second side is in the avoidance state.
2. The machining fixture of claim 1, wherein: The pressing unit includes a guide rod; the guide rod is disposed on the base and extends in the vertical direction; the pressing block is provided with a guide hole; in the pressing state, the guide hole and the guide rod are vertically aligned.
3. The machining fixture of claim 1, wherein: The processing clearance opening is provided with one side open.
4. The machining fixture of claim 1, wherein: The driver is used to drive the pressure block to rotate about a central axis to switch between a pressing state and a yielding state.
5. The machining fixture of claim 1, wherein: The actuator is a rotary downward pressure cylinder; the downward pressure block is disposed on the driving end of the actuator.
6. The machining fixture of claim 1, wherein: The pressing unit includes a stop member; the stop member is disposed on the base; in the pressing state, the stop member corresponds vertically to the pressing block.
7. The machining fixture of claim 1, wherein: The pressing block is a long-arm structure with two ends; an extension is provided on the first end of the pressing block; in the pressing state, the extension extends along the length direction of the positioning support member; the processing clearance is provided on the extension.