A jig for CNC machining with convenient adjustment

Abstract

This utility model relates to the field of CNC fixture technology, specifically an easily adjustable CNC machining fixture, including a base, a groove, a fixture body, mounting holes, positioning holes, and a clamping mechanism. The groove is formed on the upper surface of the base, and the fixture body is slidably connected to the inner wall of the groove. The mounting holes are formed in the four corner areas of the upper surface of the base, with four sets of symmetrical mounting holes. The positioning holes are formed on the upper surface of the base. The clamping mechanism is mounted on the fixture body and includes support blocks, which are fixedly connected to the upper surface of the base. There are four sets of support blocks, with two sets of support blocks having bidirectional lead screws rotatably connected to their inner walls. The surfaces of the two sets of bidirectional lead screws are threadedly connected to threaded blocks. This utility model, by setting a clamping mechanism, allows for the adjustment of the position of the column and the height of the clamping blocks, enabling the processing of different workpiece models, broadening the fixture's adaptability, reducing costs, and effectively improving the practicality of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of CNC fixture technology, and in particular to a CNC machining fixture that is easy to adjust. Background Technology

[0002] Fixtures are a broad category of tools used in woodworking, metalworking, fitter work, machinery, electrical control, and other handicrafts. They are primarily used to assist in controlling position or movement. Fixtures can be divided into three categories: process assembly fixtures, project testing fixtures, and circuit board testing fixtures.

[0003] Most of the clamping fixtures commonly used in the industry today employ a fixed clamping position design, which cannot flexibly change or adjust the positioning points according to actual needs. This directly results in a narrow range of fixture adaptability, making it difficult to meet diverse machining positioning requirements when dealing with different parts of varying sizes and shapes, thus affecting machining efficiency. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to solve the problem that most existing technologies cannot change the clamping position, and to propose an easily adjustable CNC machining fixture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a CNC machining fixture that is easy to adjust, comprising a base, a groove, a fixture body, mounting holes, positioning holes, and a clamping mechanism. The groove is formed on the upper surface of the base, and the fixture body is slidably connected to the inner wall of the groove. The mounting holes are formed in the four corner areas of the upper surface of the base, and there are four sets of mounting holes, which are symmetrical to each other. The positioning holes are formed on the upper surface of the base. The clamping mechanism is disposed on the fixture body and includes a support block. The support block is fixedly connected to the upper surface of the base. There are four sets of support blocks, wherein the inner walls of two of the support blocks are rotatably connected to a bidirectional lead screw, and the surfaces of the two sets of bidirectional lead screws are threadedly connected to a threaded block I. The upper surface of the threaded block I is fixedly connected to a column, and a sliding groove I is formed on one side of the column. A threaded block II is slidably connected to the inner wall of the sliding groove I, and a clamping block is fixedly connected to the side of the threaded block II away from the sliding groove I.

[0006] Furthermore, the threaded block is provided in two sets, which are symmetrically arranged and located in the thread groove of the bidirectional lead screw.

[0007] Furthermore, one end of each of the two sets of bidirectional lead screws is fixedly connected to a rotating wheel, and a synchronous belt is fitted inside the two sets of rotating wheels. A knob is fixedly connected to the end of one of the bidirectional lead screws away from the rotating wheel.

[0008] Furthermore, a threaded rod is rotatably connected to the inner wall of the column, the threaded rod is threadedly connected to a threaded block, and a knob is fixedly connected to the top of the threaded rod.

[0009] Furthermore, a lifting mechanism is provided on the base, the lifting mechanism includes a transmission rod, the transmission rod is rotatably connected to the inner wall of the base, and a threaded rod is rotatably connected to the inner bottom wall of the base.

[0010] Furthermore, a bevel gear one is fixedly connected to the surface of the transmission rod, and a bevel gear two is fixedly connected to the surface of the threaded rod two. The bevel gear one and the bevel gear two mesh with each other. A support rod is rotatably connected to the surface of the transmission rod. The support rod is fixedly connected to the inner bottom wall of the groove. A sliding groove two is opened on the surface of the fixture body. The transmission rod is slidably connected to the inner wall of the sliding groove two.

[0011] Furthermore, a threaded sleeve is threadedly connected to the surface of the threaded rod two, an extension plate is fixedly connected to the upper surface of the threaded sleeve, the extension plate is fixedly connected to the lower surface of the fixture body, and a motor is fixedly connected to one end of the transmission rod.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting a clamping mechanism, it is convenient for the fixture to clamp workpieces of different models. In specific use, the first threaded rod is rotated by knob one, and the threaded rod one raises the threaded block two and the clamping block at the same time. Then the workpiece is placed on the main body of the fixture. Then the second knob is rotated, and the second knob rotates one of the bidirectional lead screws. The bidirectional lead screw drives the other bidirectional lead screw to rotate at the same time through two rotating wheels and a synchronous belt. When the two bidirectional lead screws rotate, they push the two threaded blocks one to slide relative to each other. Then the two clamping blocks clamp the workpiece. By setting a clamping mechanism, the position of the column and the height of the clamping blocks can be adjusted, and different models of workpieces can be processed, which broadens the adaptability of the fixture, reduces costs, and effectively improves the practicality of the equipment.

[0014] 2. In this utility model, by setting up a lifting mechanism, the height of the fixture body can be easily increased. In specific use, the motor is started, the motor drives the transmission rod to rotate, the transmission rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear and the second threaded rod rotate simultaneously, and the second threaded rod pushes the threaded sleeve upward while rotating. The threaded sleeve, together with the extension plate, pushes the fixture body upward. By setting up the lifting mechanism, the height of the fixture can be adjusted without disassembling the fixture and adding pads, which effectively improves the convenience of the equipment. Attached Figure Description

[0015] Figure 1A three-dimensional structural diagram of a CNC machining fixture that is easy to adjust is provided for this utility model;

[0016] Figure 2 This utility model provides a schematic diagram of the clamping mechanism in a CNC machining fixture that is easy to adjust;

[0017] Figure 3 This utility model provides a schematic diagram of the structure of the threaded block, the impeller, and the timing belt in a CNC machining fixture that is easy to adjust;

[0018] Figure 4 This utility model provides a structural schematic diagram of a lifting mechanism in a CNC machining fixture that is easy to adjust;

[0019] Figure 5 This utility model presents a schematic diagram of the structure of the threaded rod and the extension plate in a CNC machining fixture that is easy to adjust.

[0020] Legend:

[0021] 1. Base; 2. Groove; 3. Fixture body; 4. Mounting hole; 5. Positioning hole; 6. Clamping mechanism; 61. Support block; 62. Two-way lead screw; 63. Threaded block one; 64. Column; 65. Sliding groove one; 66. Threaded block two; 67. Clamping block; 68. Threaded rod one; 69. Knob one; 610. Rotary wheel; 611. Synchronous belt; 612. Knob two; 7. Lifting mechanism; 71. Transmission rod; 72. Bevel gear one; 73. Threaded rod two; 74. Bevel gear two; 75. Threaded sleeve; 76. Extension plate; 77. Motor; 78. Support rod; 79. Sliding groove two. Detailed Implementation

[0022] Please see Figures 1-5 This utility model provides a technical solution: an easily adjustable CNC machining fixture, including a base 1, a groove 2, a fixture body 3, mounting holes 4, positioning holes 5, and a clamping mechanism 6. The groove 2 is opened on the upper surface of the base 1, and the fixture body 3 is slidably connected to the inner side wall of the groove 2. The mounting holes 4 are opened in the four corner areas of the upper surface of the base 1, and there are four sets of mounting holes 4. The four sets of mounting holes 4 are symmetrical to each other. The positioning holes 5 are opened on the upper surface of the base 1, and the clamping mechanism 6 is set on the fixture body 3.

[0023] The following section will explain the specific setup and function of its clamping mechanism 6 and lifting mechanism 7.

[0024] In this embodiment: the clamping mechanism 6 includes a support block 61, which is fixedly connected to the upper surface of the base 1. The support block 61 is provided with four sets, of which the inner walls of two support blocks 61 are rotatably connected with a bidirectional lead screw 62, the surfaces of the two sets of bidirectional lead screws 62 are threadedly connected with a threaded block 63, the upper surface of the threaded block 63 is fixedly connected with a column 64, a sliding groove 65 is opened on one side of the column 64, a threaded block 66 is slidably connected to the inner wall of the sliding groove 65, and a clamping block 67 is fixedly connected to the side of the threaded block 66 away from the sliding groove 65.

[0025] Specifically, there are two sets of threaded blocks 63, which are symmetrically arranged and located in the thread groove of the bidirectional lead screw 62.

[0026] The effect achieved by the above components is as follows: the bidirectional lead screw 62 can push two sets of threaded blocks 63 to move in opposite directions, thereby achieving the purpose of fixing and loosening the workpiece.

[0027] Specifically, one end of each of the two sets of bidirectional lead screws 62 is fixedly connected to a wheel 610, and a synchronous belt 611 is fitted inside the two sets of wheels 610. A knob 612 is fixedly connected to the end of one of the bidirectional lead screws 62 away from the wheel 610.

[0028] The effects achieved by the above components are as follows: the rotating wheel 610 and the timing belt 611 can make the two bidirectional lead screws 62 rotate simultaneously, and the knob 612 can facilitate the rotation of one of the bidirectional lead screws 62.

[0029] Specifically, the inner wall of the column 64 is rotatably connected to a threaded rod 68, which is threadedly connected to a threaded block 66, and a knob 69 is fixedly connected to the top of the threaded rod 68.

[0030] The effect achieved by the above components is that the threaded rod 68 can move the threaded block 66 up and down.

[0031] Specifically, a lifting mechanism 7 is provided on the base 1. The lifting mechanism 7 includes a transmission rod 71, which is rotatably connected to the inner wall of the base 1. A threaded rod 73 is rotatably connected to the inner bottom wall of the base 1.

[0032] Specifically, a bevel gear 72 is fixedly connected to the surface of the transmission rod 71, and a bevel gear 74 is fixedly connected to the surface of the threaded rod 73. The bevel gear 72 and the bevel gear 74 mesh with each other. A support rod 78 is rotatably connected to the surface of the transmission rod 71. The support rod 78 is fixedly connected to the inner bottom wall of the groove 2. A sliding groove 79 is opened on the surface of the fixture body 3. The transmission rod 71 is slidably connected to the inner wall of the sliding groove 79.

[0033] The effect achieved by the above components is to provide bevel gear 1 72 and bevel gear 2 74 to change the transmission direction.

[0034] Specifically, a threaded sleeve 75 is threadedly connected to the surface of the threaded rod 73, an extension plate 76 is fixedly connected to the upper surface of the threaded sleeve 75, the extension plate 76 is fixedly connected to the lower surface of the fixture body 3, and a motor 77 is fixedly connected to one end of the transmission rod 71.

[0035] The effects achieved by the above components are as follows: the motor 77 allows for more precise adjustment of the height of the fixture body 3, and the extension plate 76 expands the contact range.

[0036] Working principle: By setting up the clamping mechanism 6, it is easy for the fixture to clamp workpieces of different models. In specific use, the screw rod 68 is rotated by the knob 69. The screw rod 68 raises the screw block 66 and the clamping block 67 at the same time. Then the workpiece is placed on the fixture body 3. Then the knob 612 is rotated. The knob 612 rotates one of the bidirectional lead screws 62. The bidirectional lead screw 62 drives the other bidirectional lead screw 62 to rotate at the same time through two wheels 610 and a synchronous belt 611. When the two bidirectional lead screws 62 rotate, they push the two screw blocks 63 to slide relative to each other. Then the two clamping blocks 67 clamp the workpiece. By setting up the clamping mechanism 6, the position of the column 64 and the height of the clamping blocks 67 can be adjusted to process different models of workpieces, broaden the range of fixture adaptability, reduce costs, and thus effectively improve the practicality of the equipment.

[0037] By setting up the lifting mechanism 7, the height of the fixture body can be easily increased. In actual use, the motor 77 is started, and the motor 77 drives the transmission rod 71 to rotate. The transmission rod 71 drives the first bevel gear 72 to rotate, and the first bevel gear 72 drives the second bevel gear 74 to rotate. The second bevel gear 74 and the second threaded rod 73 rotate simultaneously. While the second threaded rod 73 rotates, it pushes the threaded sleeve 75 upward. The threaded sleeve 75, together with the extension plate 76, pushes the fixture body 3 upward. By setting up the lifting mechanism 7, the height of the fixture can be adjusted without disassembling the fixture and adding pads, which effectively improves the convenience of the equipment.

Claims

1. An easily adjustable CNC machining fixture, comprising a base (1), a groove (2), a fixture body (3), a mounting hole (4), a positioning hole (5), and a clamping mechanism (6), characterized in that: The groove (2) is opened on the upper surface of the base (1), the fixture body (3) is slidably connected to the inner wall of the groove (2), the mounting holes (4) are opened in the four corner areas of the upper surface of the base (1), the mounting holes (4) are provided in four sets, the four sets of mounting holes (4) are symmetrical to each other, the positioning hole (5) is opened on the upper surface of the base (1), and the clamping mechanism (6) is set on the fixture body (3); The clamping mechanism (6) includes a support block (61), which is fixedly connected to the upper surface of the base (1). The support block (61) is provided in four sets, wherein the inner walls of two support blocks (61) are rotatably connected to a bidirectional lead screw (62), and the surfaces of the two sets of bidirectional lead screws (62) are threadedly connected to a threaded block (63). The upper surface of the threaded block (63) is fixedly connected to a column (64), and a sliding groove (65) is provided on one side of the column (64). The inner wall of the sliding groove (65) is slidably connected to a threaded block (66), and a clamping block (67) is fixedly connected to the side of the threaded block (66) away from the sliding groove (65).

2. The easily adjustable CNC machining fixture according to claim 1, characterized in that: The threaded block (63) is provided in two sets, and the two sets of threaded blocks (63) are symmetrically arranged and located in the thread groove of the bidirectional screw (62).

3. The easily adjustable CNC machining fixture according to claim 1, characterized in that: One end of each of the two sets of bidirectional lead screws (62) is fixedly connected to a wheel (610), and a synchronous belt (611) is sleeved inside the two sets of wheels (610). A knob (612) is fixedly connected to one end of one of the bidirectional lead screws (62) away from the wheel (610).

4. The easily adjustable CNC machining fixture according to claim 3, characterized in that: The inner wall of the column (64) is rotatably connected to a threaded rod (68), which is threadedly connected to a threaded block (66). A knob (69) is fixedly connected to the top of the threaded rod (68).

5. The easily adjustable CNC machining fixture according to claim 1, characterized in that: The base (1) is provided with a lifting mechanism (7), which includes a transmission rod (71). The transmission rod (71) is rotatably connected to the inner wall of the base (1), and a threaded rod (73) is rotatably connected to the inner bottom wall of the base (1).

6. The easily adjustable CNC machining fixture according to claim 5, characterized in that: A bevel gear 1 (72) is fixedly connected to the surface of the transmission rod (71), and a bevel gear 2 (74) is fixedly connected to the surface of the threaded rod 2 (73). The bevel gear 1 (72) and the bevel gear 2 (74) mesh. A support rod (78) is rotatably connected to the surface of the transmission rod (71). The support rod (78) is fixedly connected to the inner bottom wall of the groove (2). A sliding groove 2 (79) is opened on the surface of the fixture body (3). The transmission rod (71) is slidably connected to the inner wall of the sliding groove 2 (79).

7. The easily adjustable CNC machining fixture according to claim 6, characterized in that: The threaded rod (73) has a threaded sleeve (75) threadedly connected to its surface. An extension plate (76) is fixedly connected to the upper surface of the threaded sleeve (75). The extension plate (76) is fixedly connected to the lower surface of the fixture body (3). A motor (77) is fixedly connected to one end of the transmission rod (71).

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