Jig for CNC machining

Abstract

The utility model discloses a CNC machining jig which comprises a carrier plate, a plurality of X-direction limiting columns for limiting products in the X direction, a plurality of Y-direction limiting columns for limiting products in the Y direction and a plurality of pressing mechanisms, and the carrier plate, the X-direction limiting columns, the Y-direction limiting columns and the pressing mechanisms are all installed on a carrier base. The X-direction limiting columns are located on the left side and the right side of a product correspondingly, and the Y-direction limiting columns are located on the front side and the rear side of the product correspondingly. The pressing mechanisms comprise the first pressing mechanism, the second pressing mechanism and the third pressing mechanism, the protruding part is provided with a protruding block, the first pressing mechanism is located below the product, the first pressing mechanism is used for pressing the protruding block, and the third pressing mechanism is used for pressing the protruding block. And the second pressing mechanism and the third pressing mechanism are respectively used for pressing different positions of the product. The product is alternately pressed by the second pressing mechanism and the third pressing mechanism, so that the influence on the processing position of the product is prevented, and the processing efficiency is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of fixture technology, and in particular relates to a fixture for CNC machining. Background Technology

[0002] In the process of manufacturing server parts, it is necessary to process and polish the manufactured parts (connectors, plugs and other structural parts);

[0003] When machining products using CNC lathes, fixtures and jigs are usually used to clamp and fix the products. However, the parts where the fixture contacts the product cannot be machined, and the fixture needs to be replaced, which reduces the machining efficiency of the product and increases the workload of the operator. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a CNC machining fixture that uses a second clamping mechanism and a third clamping mechanism to alternately clamp the product, thereby preventing interference with the product's processing position and ensuring processing efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a CNC machining fixture, comprising a carrier plate, a plurality of X-direction limiting posts for X-direction limiting of the product, a plurality of Y-direction limiting posts for Y-direction limiting of the product, and a plurality of clamping mechanisms. The carrier plate, the X-direction limiting posts, the Y-direction limiting posts, and the clamping mechanisms are all mounted on a base. The plurality of X-direction limiting posts are respectively located on the left and right sides of the product, and the plurality of Y-direction limiting posts are respectively located on the front and rear sides of the product, thereby limiting the product in the horizontal direction.

[0006] The carrier plate includes a central support portion and recessed portions on both sides of the support portion. The product includes two ends and several protrusions between the ends. The protrusions of the product are placed on the support portion of the carrier plate, and the ends of the product are placed on the recessed portions, which makes the product more stable.

[0007] The device includes a first pressing mechanism, a second pressing mechanism, and a third pressing mechanism. The protrusion is provided with a protrusion. The first pressing mechanism is located below the product and is used to press the protrusion. The second pressing mechanism and the third pressing mechanism are used to press different positions of the product. By alternately pressing the product with the second pressing mechanism and the third pressing mechanism, the processing position of the product is prevented from being affected. Compared with the prior art, there is no need to change the fixture, thus ensuring processing efficiency.

[0008] Furthermore, the first pressing mechanism includes several first pressing plates and first rotary pressing cylinders that drive the first pressing plates to press the protrusions. The first rotary pressing cylinders are fixed to the carrier, and the push rods of the first rotary pressing cylinders pass through the carrier plates and are connected to the first pressing plates. The first pressing plates are located between the product and the carrier plates, and the pressing plates correspond one-to-one with the protrusions.

[0009] Furthermore, a first pressure block is provided below the pressure plate, and a limiting rod is provided below the first pressure block. A screw passes through the first pressure plate and is threadedly connected to the limiting rod.

[0010] Furthermore, the second pressing mechanism includes several second pressure plates and a second rotary pressing cylinder that drives the second pressure plates to press the end of the product. The second rotary pressing cylinder is fixed to the carrier and connected to the second pressure plate. The second pressure plate is fixed to the second pressing block.

[0011] Furthermore, the third pressing mechanism includes several third pressing plates and a third rotary pressing cylinder that drives the third pressing plates to press the end of the product. The third rotary pressing cylinder is fixed to the carrier and connected to the third pressing plate. The third pressing plate is fixed to the pressing column.

[0012] Furthermore, the product is provided with positioning holes, and the carrier plate is provided with positioning posts corresponding to the positioning holes.

[0013] Furthermore, the limiting post includes a limiting part and a guide part located at the top of the limiting post. The guide part is an inclined surface, and the inclined direction of the inclined surface gradually tilts towards the center of the limiting post from bottom to top. The limiting part contacts the product.

[0014] Furthermore, the carrier is rotatably mounted on the mounting base, the mounting base is fixed to the mounting plate, and the mounting base is equipped with a rotary drive motor that drives the carrier to rotate, the rotary drive motor being fixed to the mounting base.

[0015] Furthermore, the product is provided with protruding pillars, and the carrier plate is provided with relief grooves corresponding to the protruding pillars.

[0016] The beneficial effects of this utility model are at least as follows:

[0017] The present invention includes a first pressing mechanism, a second pressing mechanism, and a third pressing mechanism. The first pressing mechanism is located below the product and is used to press the protrusion. The second and third pressing mechanisms are used to press different positions of the product. After the product is placed on the carrier plate, the first pressing mechanism presses the protrusion, then the second pressing mechanism presses the product. The product is processed by CNC. Then the third pressing mechanism presses the product, and the second pressing mechanism releases the product. The second and third pressing mechanisms alternately press the product to prevent affecting the product processing position. Compared with the prior art, there is no need to change the fixture, which ensures processing efficiency. It is worth mentioning that several X-direction limiting posts are located on the left and right sides of the product, and several Y-direction limiting posts are located on the front and rear sides of the product to limit the product in the horizontal direction.

[0018] The carrier plate of this utility model includes a central bearing portion and recessed portions on both sides of the bearing portion. The product includes two ends and several protrusions located between the ends. The protrusions of the product are placed on the bearing portion of the carrier plate, and the ends of the product are placed in the recessed portions, which makes the product more stable. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of this utility model (no product shown);

[0020] Figure 2 This is the utility model Figure 1 A magnified view of point A;

[0021] Figure 3 This is the utility model Figure 1 A magnified view of point B;

[0022] Figure 4 This is the second structural schematic diagram of this utility model (product placement);

[0023] Figure 5 This is the utility model Figure 4 A magnified view of point C;

[0024] Figure 6 This is a structural schematic diagram of the product of this utility model;

[0025] Figure 7 This is the utility model Figure 6 A magnified view of point D;

[0026] Figure 8 This is a schematic diagram of the structure of the first pressing mechanism of the utility model;

[0027] The parts in the attached diagram are labeled as follows:

[0028] 1. Carrier plate; 11. Bearing part; 12. Recessed part; 13. Positioning post; 14. Relief groove; 2. Product; 21. End; 22. Protrusion; 221. Protrusion; 23. Positioning hole; 24. Protruding post; 3. X-direction limiting post; 4. Y-direction limiting post; 41. Limiting part; 42. Guide part; 5. Carrier; 6. First pressing mechanism; 61. First pressure plate; 62. First rotary pressing cylinder; 63. 64. Pressure block; 65. Limiting rod; 7. Screw; 8. Second clamping mechanism; 71. Second pressure plate; 72. Second rotary clamping cylinder; 73. Second pressure block; 74. First limiting block; 8. Third clamping mechanism; 81. Third pressure plate; 82. Third rotary clamping cylinder; 83. Clamping column; 84. Second limiting block; 9. Chamfer; 10. Mounting base; 100. Mounting plate; 200. Rotary drive motor. Detailed Implementation

[0029] 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.

[0030] Example: A CNC machining fixture, such as Figure 1 He Ru Figure 2 As shown, the device includes a carrier plate 1, several X-direction limiting posts 3 for X-direction limiting of product 2, several Y-direction limiting posts 4 for Y-direction limiting of product 2, and several clamping mechanisms. The carrier plate 1, the X-direction limiting posts 3, the Y-direction limiting posts 4, and the clamping mechanisms are all mounted on a base 5. Figure 3 He Ru Figure 4 As shown, several X-direction limiting posts 3 are located on the left and right sides of product 2, and several Y-direction limiting posts 4 are located on the front and rear sides of product 2.

[0031] The carrier plate 1 includes a central support portion 11 and recessed portions 12 on both sides of the support portion 11, such as... Figure 6 As shown, the product 2 includes end portions 21 at both ends and a plurality of protrusions 22 located between the end portions 21. The protrusions 22 of the product 2 are placed on the bearing portion 11 of the carrier plate 1, and the end portions 21 of the product 2 are placed on the recessed portion 12.

[0032] The plurality of clamping mechanisms include a first clamping mechanism 6, a second clamping mechanism 7 and a third clamping mechanism 8. The protrusion 22 is provided with a protrusion 221. The first clamping mechanism 6 is located below the product 2 and is used to clamp the protrusion 221. The second clamping mechanism 7 and the third clamping mechanism 8 are respectively used to clamp different positions of the product 2.

[0033] like Figure 5 He Ru Figure 8 As shown, the first pressing mechanism 6 includes several first pressing plates 61 and first rotary pressing cylinders 62 that drive the first pressing plates 61 to press the protrusions 221. The first rotary pressing cylinders 62 are fixed to the carrier 5, and the push rod of the first rotary pressing cylinder 62 passes through the carrier plate 1 and is connected to the first pressing plate 61. The first pressing plate 61 is located between the product 2 and the carrier plate 1, and the pressing plate corresponds one-to-one with the protrusions 221.

[0034] Below the pressure plate is a first pressure block 63, and below the first pressure block 63 is a limiting rod 64. A screw 65 passes through the first pressure plate 61 and is threadedly connected to the limiting rod 64, thereby facilitating the adjustment of the downward position of the first pressure block to prevent damage to the product. In specific implementation, the first pressure block is a plastic pressure block.

[0035] like Figure 3 As shown, the second pressing mechanism 7 includes several second pressing plates 71 and a second rotary pressing cylinder 72 that drives the second pressing plates 71 to press the end 21 of the product 2. The second rotary pressing cylinder 72 is fixed to the carrier 5 and is connected to the second pressing plates 71. The second pressing plates 71 are fixed to the second pressing blocks 73. In a specific implementation, the end of the second pressing block that contacts the product is provided with a chamfer 9. The second pressing block is a plastic pressing block to prevent scratching the product surface. In this embodiment, the push rod of the second rotary pressing cylinder passes through the first limiting block 74 and is connected to the second pressing plate.

[0036] like Figure 3 As shown, the third pressing mechanism 8 includes several third pressing plates 81 and a third rotary pressing cylinder 82 that drives the third pressing plates 81 to press the end 21 of the product 2. The third rotary pressing cylinder 82 is fixed to the carrier 5 and is connected to the third pressing plates 81. The third pressing plates 81 are fixed to the pressing column 83. In specific implementation, the end of the pressing column that contacts the product is chamfered. The pressing column is a plastic pressing column to prevent scratching the product surface. In this embodiment, the push rod of the third rotary pressing cylinder passes through the second limiting block 84 and is connected to the third pressing plate.

[0037] The product 2 is provided with a positioning hole 23, and the carrier plate 1 is provided with a positioning post 13 corresponding to the positioning hole 23.

[0038] The limiting post includes a limiting part 41 and a guide part 42 located at the top of the limiting post. The guide part 42 is an inclined surface, and the inclined direction of the inclined surface gradually tilts towards the center of the limiting post from bottom to top. The limiting part 41 is in contact with the product 2.

[0039] The carrier 5 is rotatably mounted on the mounting base 10, which is fixed to the mounting plate 100. The mounting base 10 is equipped with a rotary drive motor 200 that drives the carrier 5 to rotate. The rotary drive motor 200 is fixed to the mounting base 10. In this embodiment, the carrier has a rotating shaft, and the rotary drive motor is connected to a gearbox. The gearbox is connected to the rotating shaft of the carrier. Since the gearbox is existing technology, it will not be described in detail. In specific implementation, the mounting plate is mounted on a CNC machining center.

[0040] like Figure 7 As shown, product 2 is provided with a protrusion 24, such as Figure 3 As shown, the carrier plate 1 is provided with a relief groove 14 corresponding to the protrusion 24.

[0041] The working principle of this utility model is as follows: Under the limiting action of the X-direction limiting post and the Y-direction limiting post, the end of the product is placed in the recess of the carrier plate, and the protrusion of the product is placed in the bearing part of the carrier plate. The first rotary pressing cylinder drives the first pressing block to rotate and press down, so that the first pressing block presses the protrusion of the product. Then the second rotary pressing cylinder drives the second pressing plate to rotate and press down, so that the second pressing block presses the product. The product is processed by CNC. Then the third rotary pressing cylinder drives the third pressing plate to rotate and press down, and the pressing post presses the product. Then the second pressing mechanism releases the product, and the CNC processes the product. The second pressing mechanism and the third pressing mechanism alternately press the product to prevent affecting the product processing position. At the same time, the carrier can rotate under the drive of the rotary drive motor, so as to facilitate the CNC to process the side of the product.

[0042] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, 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 CNC machining fixture, characterized in that: It includes a carrier plate (1), several X-direction limiting posts (3) for limiting the product (2) in the X direction, several Y-direction limiting posts (4) for limiting the product in the Y direction, and several clamping mechanisms. The carrier plate, the X-direction limiting posts, the Y-direction limiting posts and the clamping mechanisms are all installed on the carrier (5). The several X-direction limiting posts are located on the left and right sides of the product, and the several Y-direction limiting posts are located on the front and rear sides of the product. The carrier plate includes a central support portion (11) and recessed portions (12) on both sides of the support portion. The product includes end portions (21) at both ends and a plurality of protrusions (22) between the end portions. The protrusions of the product are placed on the support portion of the carrier plate, and the end portions of the product are placed on the recessed portions. Several clamping mechanisms include a first clamping mechanism (6), a second clamping mechanism (7) and a third clamping mechanism (8). The protrusion is provided with a protrusion (221). The first clamping mechanism is located below the product and is used to clamp the protrusion. The second clamping mechanism and the third clamping mechanism are used to clamp different positions of the product.

2. The CNC machining fixture according to claim 1, characterized in that: The first pressing mechanism includes several first pressing plates (61) and a first rotary pressing cylinder (62) that drives the first pressing plates to press the protrusions. The first rotary pressing cylinder is fixed to the carrier, and the push rod of the first rotary pressing cylinder passes through the carrier plate and is connected to the first pressing plate. The first pressing plate is located between the product and the carrier plate, and the pressing plate corresponds to the protrusions one by one.

3. The CNC machining fixture according to claim 2, characterized in that: A first pressure block (63) is provided below the pressure plate, and a limiting rod (64) is provided below the first pressure block. A screw (65) passes through the first pressure plate and is threadedly connected to the limiting rod.

4. The CNC machining fixture according to claim 1, characterized in that: The second pressing mechanism includes several second pressing plates (71) and a second rotary pressing cylinder (72) that drives the second pressing plates to press the end of the product. The second rotary pressing cylinder is fixed to the carrier and connected to the second pressing plate. The second pressing plate is fixed to the second pressing block (73).

5. The CNC machining fixture according to claim 1, characterized in that: The third pressing mechanism includes several third pressing plates (81) and a third rotary pressing cylinder (82) that drives the third pressing plates to press the end of the product. The third rotary pressing cylinder is fixed to the carrier and connected to the third pressing plate. The third pressing plate is fixed to the pressing column (83).

6. The CNC machining fixture according to claim 1, characterized in that: The product is provided with positioning holes (23), and the carrier plate is provided with positioning posts (13) corresponding to the positioning holes.

7. The CNC machining fixture according to claim 1, characterized in that: The limiting post includes a limiting part (41) and a guide part (42) located at the top of the limiting post. The guide part is an inclined surface, and the inclined direction of the inclined surface gradually tilts towards the center of the limiting post from bottom to top. The limiting part contacts the product.

8. The CNC machining fixture according to claim 1, characterized in that: The carrier is rotatably mounted on the mounting base (10), the mounting base is fixed to the mounting plate (100), and the mounting base is equipped with a rotary drive motor (200) for driving the carrier to rotate, the rotary drive motor being fixed to the mounting base.

9. The CNC machining fixture according to claim 1, characterized in that: The product is provided with a protrusion (24), and the carrier plate is provided with a relief groove (14) corresponding to the protrusion.

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