A fixing clamp for precision machining

Abstract

This utility model relates to the field of fixing fixture technology, and discloses a fixing fixture for precision machining, including a limiting mechanism, a clamping mechanism, and an anti-slip mechanism. The limiting mechanism is located at the upper end of the anti-slip mechanism, and the clamping mechanism is located inside the anti-slip mechanism. The limiting mechanism includes a limiting baffle, and a mounting frame is fixedly connected to the rear end of the limiting baffle. A pressure frame is slidably connected to the inner wall of the mounting frame, and a first spring is fixedly connected to the inner wall of the pressure frame. A support block is fixedly connected to the lower end of the first spring. This utility model uses a limiting baffle that slides on the upper end of the anti-slip shell to provide a limiting position for the limiting slider and the clamping frame, and cooperates with the clamping frame to clamp the intermediate item. This design achieves convenient clamping of the processed item while also allowing for convenient replacement of the clamping frame when it is damaged, making the device more convenient to use and improving its overall practicality.

Description

Technical Field

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

[0002] Precision machining fixtures are tools used to fix, position, and support workpieces during machining processes. They are commonly used in precision machining fields such as milling, turning, and grinding to ensure that the workpiece maintains a stable position during machining and avoids machining errors caused by displacement or vibration. Fixtures are typically designed with very high precision to ensure the accuracy and consistency of the workpiece.

[0003] However, when using precision machining fixtures, sometimes the clamping brackets used for clamping may be damaged due to long-term use or external impact, and it is inconvenient to disassemble and assemble them when they need to be replaced. This results in more time being spent on maintenance, thereby reducing the overall maintenance efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a fixing fixture for precision machining.

[0005] This utility model is achieved by the following technical solution: a fixed fixture for precision machining, including a limiting mechanism, a clamping mechanism and an anti-slip mechanism, wherein the limiting mechanism is located at the upper end of the anti-slip mechanism and the clamping mechanism is located inside the anti-slip mechanism;

[0006] The limiting mechanism includes a limiting baffle, a mounting frame fixedly connected to the rear end of the limiting baffle, a pressure frame slidably connected to the inner wall of the mounting frame, a first spring fixedly connected to the inner wall of the pressure frame, a support block fixedly connected to the lower end of the first spring, a rotating connecting rod rotatably connected to the inner wall of the pressure frame, a sliding frame rotatably connected to the surface of the rotating connecting rod, a snap-fit ​​plate fixedly connected to the end of the sliding frame away from the center of the mounting frame, and a second spring fixedly connected to the end of the sliding frame near the center of the mounting frame.

[0007] The above technical solution uses a pressure frame to drive the sliding frame and the snap-fit ​​plate to pop out again with the second spring in conjunction with the first spring. This achieves the purpose of conveniently limiting the position of the limit baffle to block the clamping frame, making subsequent disassembly and assembly work more convenient.

[0008] As a further improvement to the above solution, the sliding frame is located on both sides of the second spring, the side end of the support block is fixedly connected to the inner wall of the mounting frame, and the surface of the sliding frame is slidably connected to the inner wall of the mounting frame.

[0009] As a further improvement to the above solution, the clamping mechanism includes a motor, the output end of which is fixedly connected to a rotating shaft, a drive gear is fixedly connected to the surface of the rotating shaft, a driven gear is meshed at the upper end of the drive gear, a threaded rod is fixedly connected to the inner wall of the driven gear, a limit slider is threadedly connected to the surface of the threaded rod, and a clamping frame is fixedly connected to the upper end of the limit slider.

[0010] The above technical solution, which uses a rotating shaft to drive the two threaded rods at the top to rotate synchronously, not only facilitates the clamping of the clamping frame but also provides a basis for the subsequent disassembly of the clamping frame, making the use of the subsequent device more convenient.

[0011] As a further improvement to the above scheme, there are two clamping frames, which are symmetrically distributed about the center of the rotation axis.

[0012] As a further improvement to the above solution, the anti-slip mechanism includes an anti-slip outer shell, and a motor sleeve is fixedly connected to the right end of the anti-slip outer shell.

[0013] The above technical solutions provide stable connection and protection for internal components, making the device more stable and convenient to use.

[0014] As a further improvement to the above solution, the inner wall of the motor sleeve is fixedly connected to the surface of the motor, the inner wall of the anti-slip shell is rotatably connected to the surface of the rotating shaft, the inner wall of the anti-slip shell is rotatably connected to the surface of the threaded rod, and the inner wall of the anti-slip shell is slidably connected to the surface of the limiting slider.

[0015] As a further improvement to the above solution, the surface of the limiting baffle is slidably connected to the inner wall of the anti-slip shell, and the surface of the snap-fit ​​plate is snapped to the inner wall of the anti-slip shell.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model uses a limiting mechanism, specifically: first, the pressure frame is pressed down to slide on the inner wall of the mounting frame, while simultaneously driving the upper end of the rotating connecting rod to move downward. At this time, the angle of the rotating connecting rod changes due to the limiting of the lower sliding frame, thereby pushing the two sliding frames towards the direction of the second spring, thus causing the two side locking plates to separate from the inner wall of the anti-slip shell, thereby releasing the sliding limit of the limiting baffle. At this time, the mounting frame can be pulled to drive the limiting baffle to slide backward. After the limiting baffle slides backward a certain distance, the clamping frame is driven to move towards the central opening, thereby controlling its disengagement from the threaded rod and removing it from the notch opened by the limiting baffle for replacement.

[0018] This utility model uses a clamping mechanism, specifically: first, the object to be clamped is placed on the upper end of the limiting baffle, then an external power source is connected to start the motor to rotate, which in turn drives the rotating shaft to rotate. As the rotating shaft rotates, it drives the drive gear to drive the driven gear and the threaded rod to rotate. At this time, the limiting slider on the surface of the threaded rod moves the clamping frame under the restriction of the anti-slip shell, thereby clamping the object located at the upper end of the limiting baffle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the limiting mechanism of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the limiting mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of some parts of the limiting mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the clamping mechanism of this utility model.

[0024] Explanation of key symbols:

[0025] 1. Limiting mechanism; 101. Limiting baffle; 102. Mounting bracket; 103. Pressure bracket; 104. First spring; 105. Support block; 106. Rotating connecting rod; 107. Sliding bracket; 108. Snap-fit ​​plate; 109. Second spring; 2. Clamping mechanism; 201. Motor; 202. Rotating shaft; 203. Drive gear; 204. Driven gear; 205. Threaded rod; 206. Limiting slider; 207. Clamping bracket; 3. Anti-slip mechanism; 301. Anti-slip outer shell; 302. Motor sleeve. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example:

[0028] Please combine Figure 1-5 A precision machining fixture according to this embodiment includes a limiting mechanism 1, a clamping mechanism 2 and an anti-slip mechanism 3. The limiting mechanism 1 is located at the upper end of the anti-slip mechanism 3, and the clamping mechanism 2 is located inside the anti-slip mechanism 3.

[0029] The limiting mechanism 1 includes a limiting baffle 101. A mounting bracket 102 is fixedly connected to the rear end of the limiting baffle 101. A pressure bracket 103 is slidably connected to the inner wall of the mounting bracket 102. A first spring 104 is fixedly connected to the inner wall of the pressure bracket 103. A support block 105 is fixedly connected to the lower end of the first spring 104. A rotating connecting rod 106 is rotatably connected to the inner wall of the pressure bracket 103. A sliding bracket 107 is rotatably connected to the surface of the rotating connecting rod 106. The sliding bracket 107 is located away from the center of the mounting bracket 102. One end of the sliding frame 107 is fixedly connected to a snap-fit ​​plate 108, and the other end of the sliding frame 107 near the center of the mounting frame 102 is fixedly connected to a second spring 109. The design uses a pressure frame 103 to drive the sliding frame 107 and the snap-fit ​​plate 108 to be pushed back together by the second spring 109 and the first spring 104. This design achieves the purpose of conveniently limiting the position of the limit baffle 101 to block the clamping frame 207, making subsequent disassembly and assembly work more convenient.

[0030] The sliding frame 107 is located on both sides of the second spring 109. The side end of the support block 105 is fixedly connected to the inner wall of the mounting frame 102, and the surface of the sliding frame 107 is slidably connected to the inner wall of the mounting frame 102.

[0031] The clamping mechanism 2 includes a motor 201. A rotating shaft 202 is fixedly connected to the output end of the motor 201. A drive gear 203 is fixedly connected to the surface of the rotating shaft 202. A driven gear 204 meshes with the upper end of the drive gear 203. A threaded rod 205 is fixedly connected to the inner wall of the driven gear 204. A limit slider 206 is threadedly connected to the surface of the threaded rod 205. A clamping frame 207 is fixedly connected to the upper end of the limit slider 206. The design of using the rotating shaft 202 to drive the two threaded rods 205 at the upper end to rotate synchronously realizes the convenient driving of the clamping frame 207 for clamping, while also providing the basic conditions for the subsequent disassembly of the clamping frame 207, making the use of the subsequent device more convenient.

[0032] There are two clamps 207, which are symmetrically distributed about the center of the rotation axis 202.

[0033] The anti-slip mechanism 3 includes an anti-slip housing 301, and a motor sleeve 302 is fixedly connected to the right end of the anti-slip housing 301.

[0034] The inner wall of the motor sleeve 302 is fixedly connected to the surface of the motor 201, the inner wall of the anti-slip housing 301 is rotatably connected to the surface of the rotating shaft 202, the inner wall of the anti-slip housing 301 is rotatably connected to the surface of the threaded rod 205, and the inner wall of the anti-slip housing 301 is slidably connected to the surface of the limiting slider 206.

[0035] The surface of the limiting baffle 101 is slidably connected to the inner wall of the anti-slip housing 301, and the surface of the snap-fit ​​plate 108 is snapped to the inner wall of the anti-slip housing 301.

[0036] The implementation principle of a precision machining fixture in this embodiment is as follows: When using the fixture, the object to be clamped is first placed on the upper end of the limiting baffle 101. Then, the external power supply is turned on to start the motor 201 to rotate, which in turn drives the rotating shaft 202 to rotate. While the rotating shaft 202 rotates, it drives the drive gear 203 to drive the driven gear 204 and the threaded rod 205 to rotate. At this time, the limiting slider 206 on the surface of the threaded rod 205 moves the clamping frame 207 under the restriction of the anti-slip shell 301, thereby clamping the object located at the upper end of the limiting baffle 101 for subsequent processing. When the clamping frame 207 needs to be replaced due to long-term use or damage caused by external factors, the pressure frame 103 is pressed down to slide on the inner wall of the mounting frame 102, which in turn drives the upper end of the rotating connecting rod 106 to move downward. At this time, the rotating connecting rod 106 is limited by the lower sliding frame 107. The angle changes, pushing the sliding frames 107 on both sides towards the second spring 109, thereby causing the locking plates 108 on both sides to separate from the inner wall of the anti-slip housing 301, thus releasing the sliding limit of the limiting baffle 101. At this time, the mounting bracket 102 can be pulled to drive the limiting baffle 101 to slide backward. After the limiting baffle 101 slides backward a certain distance, it drives the clamping frame 207 to move towards the central opening, thereby controlling its disengagement from the threaded rod 205 and removal from the notch opened by the limiting baffle 101 for replacement. This device uses the limiting baffle 101 sliding on the upper end of the anti-slip housing 301 to provide a limit for the limiting slider 206 and the clamping frame 207, and cooperates with the clamping frame 207 to clamp the intermediate items. It achieves the purpose of conveniently clamping the processed items and conveniently replacing the clamping frame 207 when it is damaged, making the device more convenient to use and improving the overall practicality of the device.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A precision machining fixture characterized by comprising: It includes a limiting mechanism (1), a clamping mechanism (2) and an anti-slip mechanism (3), wherein the limiting mechanism (1) is located at the upper end of the anti-slip mechanism (3) and the clamping mechanism (2) is located inside the anti-slip mechanism (3); The limiting mechanism (1) includes a limiting baffle (101), a mounting frame (102) is fixedly connected to the rear end of the limiting baffle (101), a pressure frame (103) is slidably connected to the inner wall of the mounting frame (102), a first spring (104) is fixedly connected to the inner wall of the pressure frame (103), a support block (105) is fixedly connected to the lower end of the first spring (104), a rotating connecting rod (106) is rotatably connected to the inner wall of the pressure frame (103), a sliding frame (107) is rotatably connected to the surface of the rotating connecting rod (106), a snap-fit ​​plate (108) is fixedly connected to one end of the sliding frame (107) away from the center of the mounting frame (102), and a second spring (109) is fixedly connected to one end of the sliding frame (107) near the center of the mounting frame (102).

2. The fixture of claim 1 wherein: The sliding frame (107) is located on both sides of the second spring (109), the side end of the support block (105) is fixedly connected to the inner wall of the mounting frame (102), and the surface of the sliding frame (107) is slidably connected to the inner wall of the mounting frame (102).

3. A fixture for precision machining as claimed in claim 2, wherein: The clamping mechanism (2) includes a motor (201), the output end of which is fixedly connected to a rotating shaft (202), a drive gear (203) is fixedly connected to the surface of the rotating shaft (202), a driven gear (204) is meshed at the upper end of the drive gear (203), a threaded rod (205) is fixedly connected to the inner wall of the driven gear (204), a limit slider (206) is threadedly connected to the surface of the threaded rod (205), and a clamping frame (207) is fixedly connected to the upper end of the limit slider (206).

4. A precision machining fixture as described in claim 3, characterized in that: There are two clamps (207), which are symmetrically distributed about the center of the rotation axis (202).

5. A fixture for precision machining as claimed in claim 4, wherein: The anti-slip mechanism (3) includes an anti-slip shell (301), and a motor sleeve (302) is fixedly connected to the right end of the anti-slip shell (301).

6. A fixture for precision machining as claimed in claim 5, wherein: The inner wall of the motor sleeve (302) is fixedly connected to the surface of the motor (201), the inner wall of the anti-slip shell (301) is rotatably connected to the surface of the rotating shaft (202), the inner wall of the anti-slip shell (301) is rotatably connected to the surface of the threaded rod (205), and the inner wall of the anti-slip shell (301) is slidably connected to the surface of the limiting slider (206).

7. A fixture for precision machining as claimed in claim 6, wherein: The surface of the limiting baffle (101) is slidably connected to the inner wall of the anti-slip shell (301), and the surface of the snap-fit ​​plate (108) is snapped to the inner wall of the anti-slip shell (301).

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