CNC four-way machining jig

Abstract

The utility model relates to a CNC (computer numerical control) four-way machining jig, which belongs to the technical field of CNC machining and comprises a workbench, a base is fixed on the upper surface of the workbench, a positioning groove is arranged on the upper surface of the base, a clamping mechanism for clamping a four-way pipe is arranged on the workbench, and the four-way pipe is arranged in the positioning groove. Supports are fixed to the four corners of the lower surface of the workbench, the clamping mechanism comprises a driving part, two mounting plates, a lifting part, two guiding parts and two clamping parts, and the driving part is arranged on the workbench. According to the CNC four-way machining jig, through cooperation of a motor, a threaded rod can be driven to rotate so as to drive threaded blocks on the two sides to move, through movement of the threaded blocks on the two sides, electric push rods on the two sides can be driven to move so as to adjust the distance between the two mounting plates, through cooperation of the electric push rods, a connecting rod can be driven to move so as to drive the mounting plates to move, and the machining efficiency is improved. And the height position of the mounting plate is adjusted, so that the clamping plate can clamp the four-way pipe more quickly and efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC numerical control processing, in particular to a CNC four-way processing fixture. Background Art

[0002] In CNC machining, in order to achieve simultaneous machining of four sides of a workpiece, it is usually necessary to design special tooling fixtures to fix and position the workpiece. Traditional fixtures mostly use mechanical clamping methods, such as using bolts, pressure plates and other components to fix the workpiece on the fixture.

[0003] For example, a CNC machining positioning fixture is disclosed in the Chinese utility model patent announcement number (CN207593320U), which includes a substrate and a clamping mechanism installed on the substrate; the clamping mechanism includes a positioning plate installed on the substrate, an X-axis adjustment component located on the positioning plate, a Y-axis adjustment component located on one side of the positioning plate, and a Z-axis drive component installed on the substrate, one end of the positioning plate is provided with a receiving groove, the X-axis adjustment component includes a stopper with one end received in the receiving groove, a positioning pin connected to the positioning plate, and a first elastic member sleeved on the positioning pin, one end of the first elastic member abuts against the stopper, and the Y-axis adjustment component includes a fixed stopper installed on the substrate. A fixed block, a slider slidably arranged on a base plate, a second elastic member located between the fixed block and the slider, and the slider is arranged close to the side of the positioning plate. This utility solves the problem that traditional CNC machining jigs cannot be adjusted, and the sizes of workpieces of the same type may fluctuate, so the workpieces may be too tight or too loose when loaded into the jig, resulting in large errors in the machining accuracy of the workpieces, high defective rate of workpieces, and high production cost of workpieces. However, traditional jigs mostly use mechanical clamping methods, such as using bolts, pressure plates and other components to fix the workpiece on the jig. However, when processing some workpieces with more complex structures, this method has certain shortcomings in terms of positioning accuracy, clamping efficiency and adaptability. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a CNC four-way processing fixture, which has the advantages of improving the positioning accuracy and clamping efficiency of the fixture, and solves the problem that traditional fixtures mostly use mechanical clamping methods, such as using bolts, pressure plates and other components to fix the workpiece on the fixture. However, when processing some workpieces with more complex structures, this method has certain shortcomings in positioning accuracy, clamping efficiency and adaptability.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a CNC four-way processing fixture, comprising a workbench, a base is fixed on the upper surface of the workbench, a positioning groove is opened on the upper surface of the base, a clamping mechanism for clamping the four-way pipe is arranged on the workbench, and brackets are fixed at the four corners of the lower surface of the workbench;

[0006] The clamping mechanism includes a driving member, two mounting plates, a lifting member, two guide members, and two clamping members. The driving member is arranged on the workbench and is used to adjust the clamping spacing. The two mounting plates are respectively fixed to the two guide members. The two guide members are arranged on the workbench and are used to guide the moving trajectory of the mounting plates. The lifting member is arranged on the two mounting plates and is used to adjust the height position of the mounting plates. The two clamping members are respectively arranged on the two mounting plates and are used to clamp the four-way pipe to be processed.

[0007] The beneficial effects of adopting the above further solution are: improving the positioning accuracy and clamping efficiency of the cross-tube, and ensuring the stability and accuracy during the processing.

[0008] Furthermore, the driving member includes a motor, a threaded rod, two threaded blocks, and a limit rod. The motor is fixed to the right side of the workbench, one end of the threaded rod is fixed to the output shaft of the motor, and the other end of the threaded rod is rotatably connected to the left inner wall of the workbench through a bearing. The two threaded blocks are both threadedly connected to the outer sides of the threaded rod, and both ends of the limit rod are respectively fixed to the left and right inner walls of the workbench, and the outer side of the limit rod is slidably connected to the inner sides of the two threaded blocks.

[0009] The beneficial effect of adopting the above further solution is that the main pipeline of the four-way pipe can be positioned and clamped.

[0010] Furthermore, two threads in opposite directions are distributed on the outer side of the threaded rod and are symmetrically distributed about the central axis of the threaded rod. The two threaded blocks are respectively located on the threads on both sides and are symmetrically distributed about the central axis of the threaded rod.

[0011] The beneficial effect of adopting the above further solution is that the movement of the threaded block can adjust the distance between the two mounting plates.

[0012] Furthermore, the lifting member includes two electric push rods and two connecting rods, the two electric push rods are respectively fixed to the front sides of the two threaded blocks, one end of the two connecting rods are respectively fixed to the output shafts of the two electric push rods, and the other ends of the two connecting rods are respectively fixed to the lower surfaces of the two mounting plates.

[0013] The beneficial effect of adopting the above further solution is that the auxiliary pipeline of the cross-way pipe is positioned and clamped.

[0014] Furthermore, a sliding opening is provided on the upper surface of the workbench, the two connecting rods are both located inside the sliding opening, and the width of the sliding opening is matched with the outer diameter of the connecting rod.

[0015] The beneficial effect of adopting the above further solution is that the connecting rod can be easily moved on the workbench.

[0016] Furthermore, the guide member includes a first sliding rod, a first limit block, a slider, a second sliding rod, and a second limit block, one end of the first sliding rod is fixed to the upper surface of the workbench, the other end of the first sliding rod is fixed to the first limit block, the slider is slidably connected to the outer side of the first sliding rod, one end of the second sliding rod is fixed to the left side of the slider, and the other end of the second sliding rod is fixed to the second limit block.

[0017] The beneficial effect of adopting the above further solution is to prevent the position of the mounting plate from being offset during the movement.

[0018] Furthermore, the outer diameter of the first limiting block is greater than the outer diameter of the first sliding rod, and the outer diameter of the second limiting block is greater than the outer diameter of the second sliding rod.

[0019] The beneficial effect of adopting the above further solution is: preventing the slider from being separated from the first slide bar and the mounting plate from being separated from the second slide bar.

[0020] Furthermore, the clamping member includes a clamping block, which is fixed to the front side of the mounting plate, a first clamping groove is formed on the lower surface of the clamping block, and a second clamping groove is fixed on the left side of the clamping block.

[0021] The beneficial effect of adopting the above further solution is that the cross-tube can be kept stable during the processing.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] 1. The CNC four-way processing fixture can drive the threaded rod to rotate through the cooperation of the motor, thereby driving the threaded blocks on both sides to move. The movement of the threaded blocks on both sides can drive the electric push rods on both sides to move, thereby adjusting the distance between the two mounting plates. The cooperation of the electric push rods can drive the connecting rod to move, thereby driving the mounting plate to move, adjusting the height position of the mounting plate, so that the clamp can clamp the four-way pipe faster and more efficiently.

[0024] 2. The CNC four-way processing fixture, through the cooperation of the mounting block, can drive the second slide bar to move when moving up and down, thereby driving the slider to slide on the first slide bar, so as to position and guide the movement in the up and down directions. Through the cooperation of the second slide bar, the movement of the mounting block can be positioned and guided when the mounting block moves left and right, thereby improving the positioning accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the clamping mechanism of the utility model;

[0027] Figure 3This is a schematic diagram of the clamping member of the utility model.

[0028] In the figure: 1 workbench, 2 base, 3 positioning groove, 4 clamping mechanism, 41 driving member, 411 motor, 412 threaded rod, 413 threaded block, 414 limit rod, 42 mounting plate, 43 lifting member, 431 electric push rod, 432 connecting rod, 44 guide member, 441 first sliding rod, 442 first limit block, 443 slider, 444 second sliding rod, 445 second limit block, 45 clamping member, 451 clamping block, 452 first clamping groove, 453 second clamping groove, 5 bracket. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 A CNC four-way processing fixture in this embodiment includes a workbench 1, a base 2 is fixed on the upper surface of the workbench 1, a positioning groove 3 is opened on the upper surface of the base 2, and the positioning groove 3 on the base 2 can preliminarily locate the position of the four-way pipe. A clamping mechanism 4 for clamping the four-way pipe is provided on the workbench 1 to improve the positioning accuracy and clamping efficiency of the four-way pipe and ensure the stability and accuracy during the processing. Brackets 5 are fixed at the four corners of the lower surface of the workbench 1 to keep the workbench 1 stable.

[0031] See also Figure 2-3 In order to improve the positioning accuracy and clamping efficiency of the four-way pipe and ensure the stability and accuracy during the processing, the clamping mechanism 4 in this embodiment includes a driving member 41, two mounting plates 42, a lifting member 43, two guide members 44, and two clamping members 45. The driving member 41 is arranged on the workbench 1 and is used to adjust the clamping spacing so as to position and clamp the main pipeline of the four-way pipe. The two mounting plates 42 are respectively fixed to the two guide members 44. The two guide members 44 are arranged on the workbench 1 and are used to guide the moving trajectory of the mounting plate 42 to prevent the position of the mounting plate 42 from shifting during the movement. The lifting member 43 is arranged on the two mounting plates 42 and is used to adjust the height position of the mounting plates 42 so that the secondary pipeline of the four-way pipe reaches the positioning clamping. The two clamping members 45 are respectively arranged on the two mounting plates 42 and are used to clamp the four-way pipe to be processed so that the four-way pipe can remain stable during the processing.

[0032] In this embodiment, the driving member 41 includes a motor 411, a threaded rod 412, two threaded blocks 413, and a limiting rod 414. The motor 411 is fixed to the right side of the workbench 1, one end of the threaded rod 412 is fixed to the output shaft of the motor 411, and the output shaft of the motor 411 drives the threaded rod 412 to rotate. The other end of the threaded rod 412 is rotatably connected to the left inner wall of the workbench 1 through a bearing. The two threaded blocks 413 are both threadedly connected to the outer side of the threaded rod 412. The threaded rod 412 drives the threaded blocks 413 on both sides to move. The two ends of the limiting rod 414 are respectively fixed to the left and right inner walls of the workbench 1, and the outer side of the limiting rod 414 is slidably connected to the inner sides of the two threaded blocks 413. The limiting rod 414 limits the angle of the threaded blocks 413 to avoid The angle of the threaded block 413 is offset, and the lifting member 43 includes two electric push rods 431 and two connecting rods 432. The two electric push rods 431 are respectively fixed to the front sides of the two threaded blocks 413, and the threaded blocks 413 on both sides drive the electric push rods 431 to move. One end of the two connecting rods 432 is respectively fixed to the output shafts of the two electric push rods 431, and the other ends of the two connecting rods 432 are respectively fixed to the lower surfaces of the two mounting plates 42. The electric push rod 431 drives the connecting rod 432 to move, and the connecting rod 432 drives the mounting plate 42 to move, thereby adjusting the spacing between the mounting plates 42 on both sides. At the same time, the output shaft connecting rod 432 of the electric push rod 431 moves, and the connecting rod 432 drives the mounting plate 42 to move, thereby adjusting the height of the mounting plate 42. The guide member 44 includes a first slide bar 441, a first limit block 442, a slider 443, a second slide bar 444, and a second limit block 445. One end of the first slide bar 441 is fixed to the upper surface of the workbench 1, and the other end of the first slide bar 441 is fixed to the first limit block 442. The slider 443 is slidably connected to the outer side of the first slide bar 441, and one end of the second slide bar 444 is fixed to the left side of the slider 443. The other end of the second slide bar 444 is fixed to the second limit block 445. When the mounting plate 42 moves up and down, the mounting plate 42 drives the second slide bar 444 to move, and the second slide bar 444 drives the slider 443 to move. The slider 443 slides on the first slide bar 441, so that the up and down movement of the mounting plate 42 is positioned and guided, and the mounting plate 42 is When moving left and right, the mounting plate 42 slides on the second slide bar 444, so that the left and right movement of the mounting plate 42 is guided by positioning to avoid the position of the mounting plate 42 being offset. The clamping member 45 includes a clamping block 451, which is fixed to the front side of the mounting plate 42. A first clamping groove 452 is provided on the lower surface of the clamping block 451. The mounting plate 42 drives the clamping block 451 to move, and the clamping block 451 moves to the base 2. The first clamping groove 452 on the clamping block 451 positions the secondary pipe of the four-way pipe, and a second clamping groove 453 is fixed on the left side of the clamping block 451. When the motor 411 is turned on again, the spacing of the mounting plate 42 can be adjusted, so that the second clamping groove 453 on the clamping block 451 positions the main pipe of the four-way pipe, thereby improving the positioning accuracy of the workpiece.

[0033] It should be noted that two threads in opposite directions are distributed on the outer side of the threaded rod 412, and are symmetrically distributed with respect to the central axis of the threaded rod 412. The two threaded blocks 413 are respectively located on the threads on both sides, and are symmetrically distributed with respect to the central axis of the threaded rod 412. Since the outer side of the threaded rod 412 is provided with a bidirectional thread, the movement directions of the threaded blocks 413 on both sides are opposite, so that the movement of the threaded blocks 413 can adjust the spacing between the two mounting plates 42. A sliding opening is provided on the upper surface of the workbench 1, and the two connecting rods 432 are both located inside the sliding opening, and the width of the sliding opening is adapted to the outer diameter of the connecting rod 432, so that the connecting rod 432 can be moved on the workbench 1 conveniently. The outer diameter of the first limit block 442 is larger than the outer diameter of the first slide rod 441, and the outer diameter of the second limit block 445 is larger than the outer diameter of the second slide rod 444, so as to prevent the slider 443 from detaching from the first slide rod 441 and the mounting plate 42 from detaching from the second slide rod 444.

[0034] The working principle of the above embodiment is:

[0035] (1) First, place the four-way pipe to be processed on the base 2. The positioning groove 3 on the base 2 can be used to preliminarily locate the position of the four-way pipe. Then, turn on the motor 411. The output shaft of the motor 411 drives the threaded rod 412 to rotate, and the threaded rod 412 drives the threaded blocks 413 on both sides to move. Since the outer side of the threaded rod 412 is provided with a bidirectional thread, the movement directions of the threaded blocks 413 on both sides are opposite. The threaded blocks 413 on both sides drive the electric push rod 431 to move, the electric push rod 431 drives the connecting rod 432 to move, and the connecting rod 432 drives the mounting plate 42 to move, thereby adjusting the distance between the mounting plates 42 on both sides.

[0036] (2) After adjusting the spacing between the mounting plates 42 on both sides, turn on the electric push rod 431, the output shaft connecting rod 432 of the electric push rod 431 moves, and the connecting rod 432 drives the mounting plate 42 to move, thereby adjusting the height of the mounting plate 42, so that the mounting plate 42 drives the clamping block 451 to move, and the clamping block 451 moves to the base 2, and the first clamping groove 452 on the clamping block 451 positions the secondary pipe of the cross-tube. At this time, turn on the motor 411 again to adjust the spacing between the mounting plates 42, so that the first clamping groove 452 on the clamping block 451 can be adjusted. The second clamping grooves 453 position the main pipeline of the four-way pipe, thereby improving the positioning accuracy of the workpiece. When the mounting plate 42 moves up and down, the mounting plate 42 drives the second slide bar 444 to move, and the second slide bar 444 drives the slider 443 to move. The slider 443 slides on the first slide bar 441, so that the up and down movement of the mounting plate 42 is guided by positioning. When the mounting plate 42 moves left and right, the mounting plate 42 slides on the second slide bar 444, so that the left and right movement of the mounting plate 42 is guided by positioning, thereby avoiding the position of the mounting plate 42 from being offset.

Claims

1. A CNC four-way machining jig, comprising a workbench (1), characterized in that: A base (2) is fixed on the upper surface of the workbench (1), a positioning groove (3) is provided on the upper surface of the base (2), a clamping mechanism (4) for clamping the cross-tube is provided on the workbench (1), and brackets (5) are fixed at the four corners of the lower surface of the workbench (1); The clamping mechanism (4) comprises a driving member (41), two mounting plates (42), a lifting member (43), two guide members (44), and two clamping members (45); the driving member (41) is arranged on the workbench (1) and is used to adjust the clamping interval; the two mounting plates (42) are respectively fixed to the two guide members (44); the two guide members (44) are arranged on the workbench (1) and are used to guide the moving trajectory of the mounting plates (42); the lifting member (43) is arranged on the two mounting plates (42) and is used to adjust the height position of the mounting plates (42); and the two clamping members (45) are respectively arranged on the two mounting plates (42) and are used to clamp the four-way pipe to be processed.

2. A CNC four-way processing jig according to claim 1, characterized in that: The driving member (41) comprises a motor (411), a threaded rod (412), two threaded blocks (413), and a limit rod (414); the motor (411) is fixed to the right side of the workbench (1); one end of the threaded rod (412) is fixed to the output shaft of the motor (411); the other end of the threaded rod (412) is rotatably connected to the left inner wall of the workbench (1) via a bearing; the two threaded blocks (413) are both threadedly connected to the outer side of the threaded rod (412); the two ends of the limit rod (414) are respectively fixed to the left and right inner walls of the workbench (1); and the outer side of the limit rod (414) is slidably connected to the inner sides of the two threaded blocks (413).

3. A CNC four-way processing jig according to claim 2, characterized in that: The outer side of the threaded rod (412) is provided with two threads in opposite directions, and are symmetrically distributed about the central axis of the threaded rod (412). The two threaded blocks (413) are respectively located on the threads on both sides, and are symmetrically distributed about the central axis of the threaded rod (412).

4. A CNC four-way processing jig according to claim 3, characterized in that: The lifting member (43) comprises two electric push rods (431) and two connecting rods (432); the two electric push rods (431) are respectively fixed to the front sides of the two threaded blocks (413); one ends of the two connecting rods (432) are respectively fixed to the output shafts of the two electric push rods (431); and the other ends of the two connecting rods (432) are respectively fixed to the lower surfaces of the two mounting plates (42).

5. A CNC four-way processing jig according to claim 4, characterized in that: The upper surface of the workbench (1) is provided with a sliding opening, the two connecting rods (432) are both located inside the sliding opening, and the width of the sliding opening is adapted to the outer diameter of the connecting rod (432).

6. The CNC four-way processing jig according to claim 1, characterized in that: The guide member (44) comprises a first sliding rod (441), a first limiting block (442), a sliding block (443), a second sliding rod (444), and a second limiting block (445); one end of the first sliding rod (441) is fixed to the upper surface of the workbench (1); the other end of the first sliding rod (441) is fixed to the first limiting block (442); the sliding block (443) is slidably connected to the outer side of the first sliding rod (441); one end of the second sliding rod (444) is fixed to the left side of the sliding block (443); and the other end of the second sliding rod (444) is fixed to the second limiting block (445).

7. A CNC four-way processing jig according to claim 6, characterized in that: The outer diameter of the first limit block (442) is greater than the outer diameter of the first sliding rod (441), and the outer diameter of the second limit block (445) is greater than the outer diameter of the second sliding rod (444).

8. The CNC four-way processing jig according to claim 1, characterized in that: The clamping member (45) comprises a clamping block (451), the clamping block (451) being fixed to the front side of the mounting plate (42), a first clamping groove (452) being provided on the lower surface of the clamping block (451), and a second clamping groove (453) being fixed on the left side of the clamping block (451).

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