Positioning clamp capable of being finely adjusted

Abstract

The utility model discloses a positioning fixture capable of being finely adjusted, which belongs to the technical field of machining centers, the positioning fixture is used for a machining center, a workbench is fixedly connected above the machining center, an adjusting turntable is rotatably connected above the workbench, a plurality of limiting grooves which are annularly distributed are arranged above the adjusting turntable, and the limiting grooves are matched with the adjusting turntable. A fixing plate is fixedly connected to the upper portion of the machining center, an adjusting rotary disc is arranged on a clamp base, the adjusting rotary disc is limited through a pull rod, a limiting block and a spring, and fine adjustment of a clamp is conducted, so that fine adjustment of a workpiece is achieved, the high-precision machining requirement is met, and use is convenient; the first servo motor and the gear are arranged on the main support, the control box and the gear ring are arranged on the transverse support, rotation of the transverse support is achieved, a tool driven by the servo motor and the air cylinder in the transverse support is matched, the machining angle is more comprehensive, the machining precision is improved, and the frequency of taking down a workpiece for position adjustment is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of machining center technology, specifically an adjustable positioning fixture. Background Technology

[0002] A machining center is a highly automated CNC machine tool that integrates multiple machining functions such as milling, drilling, and boring. It can perform complex-shaped and high-precision machining of workpieces. Adjustable positioning fixtures are widely used devices in mechanical engineering, allowing for precise and adjustable positioning and clamping of workpieces. These fixtures, through fine-tuning mechanisms, can achieve minute adjustments to the workpiece position to meet the demands of high-precision machining.

[0003] The existing technology still has the following shortcomings:

[0004] 1. Existing positioning fixtures lack the function of fine-tuning the workpiece during use. In order to meet the requirements of high-precision machining, the position of the workpiece needs to be finely adjusted during the machining process in the machining center.

[0005] 2. Existing positioning fixtures lack the function of multi-angle machining of workpieces during use, which makes it difficult to meet the current needs. The machining angle is limited and not comprehensive enough. Utility Model Content

[0006] To overcome the above-mentioned defects, this utility model provides a finely adjustable positioning fixture, which solves the problems of lacking the ability to finely adjust the workpiece and insufficient processing angles.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a finely adjustable positioning fixture for a machining center. A worktable is fixedly connected above the machining center, and an adjusting turntable is rotatably connected above the worktable. Several annularly distributed limiting grooves are provided above the adjusting turntable. A fixed plate is fixedly connected above the machining center, and a pull rod is slidably connected to the middle of the fixed plate. A limiting block is fixedly connected to the end of the pull rod away from the fixed plate, and a spring is sleeved on the outer side of the pull rod. The limiting block is adapted to the limiting groove.

[0008] As a further embodiment of this utility model: a clamping seat is fixedly connected above the adjusting turntable, a bidirectional lead screw is rotatably connected inside the clamping seat, two clamping plates are slidably connected inside the clamping seat, both clamping plates are threadedly connected to the bidirectional lead screw, a knob is rotatably connected to one side of the clamping seat, and the knob is fixedly connected to one end of the bidirectional lead screw.

[0009] As a further embodiment of this utility model: a main support is fixedly connected above the machining center, and a horizontal support is rotatably connected above the main support.

[0010] As a further embodiment of this utility model: a servo motor is fixedly connected to one side of the main support, a control box is fixedly connected to the lower part of the horizontal support, a gear ring is fixedly connected inside the control box, and a gear is coaxially fixedly connected to the output end of the servo motor, with the gear ring meshing with the gear.

[0011] As a further embodiment of this utility model: a lead screw is rotatably connected inside the horizontal support, a movable block is slidably connected inside the horizontal support, the movable block is threadedly connected to the lead screw, a servo motor II is fixedly connected to one end of the horizontal support, and the output end of the servo motor II is coaxially fixedly connected to the lead screw.

[0012] As a further embodiment of this utility model: a cylinder is fixedly connected to the lower part of the movable block, and a processing tool is provided below the cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By setting an adjusting turntable on the fixture base, and then using a pull rod, a limit block, and a spring to limit the adjusting turntable, the fixture can be finely adjusted, thereby achieving fine-tuning of the workpiece, meeting the requirements of high-precision machining, and the structure is simple and easy to use.

[0015] By setting a servo motor and gear on the main support and a control box and gear ring on the cross support, the rotation of the cross support is realized. In conjunction with the cutting tool driven by the servo motor and cylinder inside the cross support, the machining angle is more comprehensive, the machining accuracy is improved, and the number of times the workpiece is removed for position adjustment is reduced. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the clamp structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the main support and cross support structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the control box of this utility model.

[0020] In the diagram: 1. Machining center; 2. Worktable; 3. Adjusting turntable; 4. Fixture seat; 5. Two-way lead screw; 6. Clamping plate; 7. Limiting groove; 8. Fixing plate; 9. Tie rod; 10. Limiting block; 11. Spring; 12. Knob; 13. Main support; 14. Horizontal support; 15. Servo motor one; 16. Control box; 17. Gear ring; 18. Gear; 19. Lead screw; 20. Moving block; 21. Servo motor two; 22. Cylinder. Detailed Implementation

[0021] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0022] like Figures 1-4 As shown, this utility model provides a technical solution:

[0023] An adjustable positioning fixture is provided for use in a machining center. A worktable 2 is fixedly connected above the machining center 1, and an adjusting turntable 3 is rotatably connected above the worktable 2. Several ring-shaped limiting grooves 7 are provided above the adjusting turntable 3. A fixed plate 8 is fixedly connected above the machining center 1, and a pull rod 9 is slidably connected to the center plate 8 through the center plate 8. A limiting block 10 is fixedly connected to the end of the pull rod 9 away from the center plate 8. A spring 11 is sleeved on the outside of the pull rod 9. The limiting block 10 is adapted to the limiting groove 7. When the operator pulls the pull rod 9 outward, the spring 11 contracts, and the limiting block 10 disengages from the limiting groove 7. Then, the adjusting turntable 3 is rotated to adjust it to the required angle. The pull rod 9 is then released, the spring 11 opens, and the limiting block 10 is inserted into the limiting groove 7, thus fixing the position of the adjusting turntable 3.

[0024] A clamping seat 4 is fixedly connected above the adjusting turntable 3. A double-acting lead screw 5 is rotatably connected inside the clamping seat 4. Two clamping plates 6 are slidably connected inside the clamping seat 4. Both clamping plates 6 are threadedly connected to the double-acting lead screw 5. A knob 12 is rotatably connected to one side of the clamping seat 4. The knob 12 is fixedly connected to one end of the double-acting lead screw 5. The workpiece is placed between the two clamping plates 6, and then the knob 12 is rotated to drive the double-acting lead screw 5 to rotate. At this time, the two clamping plates 6 move closer to each other and clamp the workpiece.

[0025] A main support 13 is fixedly connected to the top of the machining center 1. A horizontal support 14 is rotatably connected to the top of the main support 13. A servo motor 15 is fixedly connected to one side of the main support 13. A control box 16 is fixedly connected to the bottom of the horizontal support 14. A gear ring 17 is fixedly connected inside the control box 16. A gear 18 is coaxially fixedly connected to the output end of the servo motor 15. The gear ring 17 meshes with the gear 18. When the servo motor 15 is started, it drives the gear 18 fixedly connected to its output end to rotate. The gear 18 drives the horizontal support 14 to rotate through the gear ring 17 meshing with it.

[0026] A lead screw 19 is rotatably connected inside the horizontal support 14, and a movable block 20 is slidably connected inside the horizontal support 14. The movable block 20 is threadedly connected to the lead screw 19. A servo motor 21 is fixedly connected to one end of the horizontal support 14. The output end of the servo motor 21 is coaxially fixedly connected to the lead screw 19. When the servo motor 21 is started, it drives the lead screw 19, which is fixedly connected to its output end, to rotate. When the lead screw 19 rotates, the movable block 20 inside the horizontal support 14 moves along the direction of the lead screw 19.

[0027] A cylinder 22 is fixedly connected to the lower part of the movable block 20. A machining tool is set below the cylinder 22. The cylinder 22 drives the machining tool to move up and down to perform multi-angle machining on the workpiece.

[0028] The working principle of this utility model is as follows:

[0029] First, the operator places the workpiece between the two clamping plates 6, then turns the knob 12 to rotate the bidirectional lead screw 5. At this time, the two clamping plates 6 move closer together to hold the workpiece. Then, the servo motor 15 is started, driving the gear 18 fixedly connected to its output end to rotate. The gear 18 drives the horizontal support 14 to rotate through the gear ring 17 meshing with it. The servo motor 21 is started, driving the lead screw 19 fixedly connected to its output end to rotate. When the lead screw 19 rotates, the movable block 20 inside the horizontal support 14 moves along the direction of the lead screw 19. The cylinder below the movable block 20... 22 drives the machining tool to move up and down. With the cooperation of these structures, the workpiece is machined from multiple angles, which improves the machining accuracy. When the workpiece needs to be fine-tuned, the operator pulls the pull rod 9 outward. At this time, the spring 11 contracts, the limit block 10 disengages from the limit groove 7, and then the adjusting turntable 3 is rotated to adjust it to the required angle. Then the pull rod 9 is released, the spring 11 opens, and the limit block 10 is inserted into the limit groove 7, fixing the position of the adjusting turntable 3. This completes the fine-tuning of the workpiece, meets the high-precision machining requirements, and has a simple structure that is easy to use.

[0030] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A finely adjustable positioning fixture for use in a machining center, characterized in that: A worktable (2) is fixedly connected above the machining center (1). An adjusting turntable (3) is rotatably connected above the worktable (2). Several limiting grooves (7) arranged in a ring are opened above the adjusting turntable (3). A fixing plate (8) is fixedly connected above the machining center (1). A pull rod (9) is provided through the middle of the fixing plate (8). The pull rod (9) is slidably connected to the fixing plate (8). A limiting block (10) is fixedly connected to the end of the pull rod (9) away from the fixing plate (8). A spring (11) is sleeved on the outside of the pull rod (9). The limiting block (10) is adapted to the limiting groove (7).

2. The adjustable positioning fixture according to claim 1, characterized in that: A clamp seat (4) is fixedly connected above the adjusting turntable (3). A bidirectional lead screw (5) is rotatably connected inside the clamp seat (4). Two clamping plates (6) are slidably connected inside the clamp seat (4). Both clamping plates (6) are threadedly connected to the bidirectional lead screw (5). A knob (12) is rotatably connected to one side of the clamp seat (4). The knob (12) is fixedly connected to one end of the bidirectional lead screw (5).

3. The adjustable positioning fixture according to claim 2, characterized in that: A main support (13) is fixedly connected above the machining center (1), and a cross support (14) is rotatably connected above the main support (13).

4. The adjustable positioning fixture according to claim 3, characterized in that: A servo motor (15) is fixedly connected to one side of the main support (13), and a control box (16) is fixedly connected to the bottom of the horizontal support (14). A gear ring (17) is fixedly connected inside the control box (16), and a gear (18) is fixedly connected to the output end of the servo motor (15) on the same axis. The gear ring (17) meshes with the gear (18).

5. The adjustable positioning fixture according to claim 4, characterized in that: The horizontal support (14) is rotatably connected to a lead screw (19), and the horizontal support (14) is slidably connected to a movable block (20). The movable block (20) is threadedly connected to the lead screw (19). One end of the horizontal support (14) is fixedly connected to a servo motor (21), and the output end of the servo motor (21) is coaxially fixedly connected to the lead screw (19).

6. The adjustable positioning fixture according to claim 5, characterized in that: A cylinder (22) is fixedly connected to the lower part of the movable block (20), and a machining tool is provided below the cylinder (22).

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