Positioning tool for precision parts machined through CNC (computer numerical control)

Abstract

The utility model relates to the technical field of part machining, and discloses a positioning tool for CNC machined precision parts, which comprises a bearing plate, the upper surface of the bearing plate is fixedly connected with a sliding rail, the outer wall of the sliding rail is slidably connected with a sliding block, the upper surface of the sliding block is fixedly connected with a sliding plate, the outer wall of the sliding plate is rotatably connected with a connecting rod, and the connecting rod is fixedly connected with the bearing plate. A rotating block is rotatably connected to the inner wall of the connecting rod, an outer supporting block is fixedly connected to the upper surface of the sliding plate, a limiting rod is fixedly connected to the inner wall of the outer supporting block on one side, a spring is arranged on the outer wall of the limiting rod, a check block is fixedly connected to the upper surface of the bearing plate, and a feeding assembly is arranged on the lower surface of the bearing plate. According to the assembly, the electric push rod pushes the sliding plate to enable the sliding block to slide, the sliding plate drives the connecting rod to enable the rotating block to rotate, the sliding plate drives the outer supporting block to enable the limiting rod to move, meanwhile, the spring is compressed, and the assembly can rapidly disassemble and assemble workpieces to achieve the effect of high feeding and discharging speed.

Description

Technical Field

[0001] This utility model relates to the field of parts processing technology, and in particular to a positioning fixture for precision parts machined by CNC. Background Technology

[0002] Precision part positioning fixtures are specialized devices used to accurately determine the position of precision parts during machining, assembly, or inspection. Based on the six-point positioning principle, a free object in space has six degrees of freedom: translational degrees of freedom along the X, Y, and Z axes and rotational degrees of freedom around the X, Y, and Z axes. The positioning fixture restricts these degrees of freedom of the part through positioning elements, thereby determining the unique position of the part.

[0003] Positioning fixtures for precision parts machined by CNC can ensure machining accuracy, improve machining efficiency, enable machining of complex shapes, and ensure the consistency of batch machining quality. Traditional positioning fixtures for precision parts machined by CNC have limited positioning accuracy, poor versatility, low clamping efficiency, and high maintenance costs. In order to meet the requirements of modern precision parts machining, new positioning fixtures for precision parts machined by CNC are used.

[0004] In the existing technology, the traditional positioning fixtures for precision parts machining are inefficient. They usually require workers to install the parts to be machined using clamps and screws, which relies on manual operation, is time-consuming and labor-intensive, and cannot meet the needs of mass production for rapid loading and unloading. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a positioning fixture for CNC-machined precision parts, aiming to improve the low clamping efficiency of traditional positioning fixtures for precision parts machining. These fixtures typically require workers to install the parts to be machined using clamps and screws, relying on manual operation, which is time-consuming and labor-intensive, and cannot meet the needs of rapid loading and unloading in mass production.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A positioning fixture for CNC-machined precision parts includes a support plate, a slide rail fixedly connected to the upper surface of the support plate, a slider slidably connected to the outer wall of the slide rail, a sliding plate fixedly connected to the upper surface of the slider, a connecting rod rotatably connected to the outer wall of the sliding plate, a rotating block rotatably connected to the inner wall of the connecting rod, and the lower surface of the rotating block rotatably connected to the inner wall of the support plate. An outer support block is fixedly connected to the upper surface of the sliding plate, a limit rod is fixedly connected to the inner wall of one side of the outer support block, and the inner wall of the other side of the outer support block is slidably connected to the outer wall of the limit rod. A spring is provided on the outer wall of the limit rod, and both ends of the spring are fixedly connected to the outer wall of the outer support block. A stop block is fixedly connected to the upper surface of the support plate, and the outer wall of the stop block is slidably connected to the outer wall of the sliding plate. A mold is fixedly connected to the upper surface of the support plate, and a feeding assembly is provided on the lower surface of the support plate.

[0008] Preferably, the feeding assembly includes a slide body, the upper surface of which is fixedly connected to the lower surface of the support plate, an electric slide is slidably connected to the inner wall of the slide body, and a worktable is fixedly connected to the lower surface of the electric slide.

[0009] Preferably, a fixing block is fixedly connected to the upper surface of the worktable, an electric push rod is fixedly connected to the upper surface of the fixing block, the outer wall of the electric push rod is slidably connected to the outer wall of the sliding plate, and a moving component is provided below the worktable.

[0010] Preferably, the moving component includes a support block, the upper part of which is disposed below the worktable, a bracket is fixedly connected to the upper surface of the support block, a hydraulic rod is fixedly connected to the upper surface of the bracket, and a support plate is fixedly disposed at the output end of the hydraulic rod.

[0011] Preferably, a limiting post is fixedly connected to the lower surface of the tray, and a sleeve is slidably connected to the outer wall of the limiting post, with the outer wall of the sleeve fixedly connected to the inner wall of the bracket.

[0012] Preferably, a motor is fixedly connected to the lower surface of the pallet, and a first gear is fixedly provided at the output end of the motor, with a second gear meshing between the teeth of the first gear.

[0013] Preferably, the inner wall of the second gear is rotatably connected to a rotating column, and the lower surface of the rotating column is fixedly connected to the upper surface of the support plate.

[0014] Preferably, a support plate is fixedly connected to the upper surface of the second gear, a baffle is fixedly connected to the lower surface of the support plate, a limit plate is slidably connected to the outer wall of the baffle, the lower surface of the limit plate is fixedly connected to the upper surface of the support plate, and the upper surface of the support plate is fixedly connected to the lower surface of the electric slide.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the sliding plate is pushed by the electric push rod to make the slider slide, the sliding plate drives the connecting rod to make the rotating block rotate, the sliding plate drives the outer support block to make the limiting rod move and the spring is compressed at the same time, the electric push rod is retracted, and the limiting rod pushes the outer support block to make the outer support block clamp the workpiece. This component can quickly assemble and disassemble the workpiece to achieve the effect of fast loading and unloading speed.

[0017] 2. In this utility model, the electric slide is activated to drive the slide to make the clamping component slide on the upper surface of the worktable. When the clamping component moves to the position of the moving component, the processing operation is performed. This component can move the parts that need to be loaded and unloaded to a position suitable for the worker to operate, so as to facilitate the worker's operation.

[0018] 3. In this utility model, the hydraulic rod is activated to drive the pallet to move the rotating column, which in turn drives the second gear to move the bearing plate. The motor is activated to drive the first gear to rotate the second gear, which in turn drives the bearing plate to rotate. This assembly can achieve the effect of moving the workpiece to a designated position for processing. Attached Figure Description

[0019] Figure 1 This is a perspective view of a positioning fixture for CNC-machined precision parts proposed in this utility model;

[0020] Figure 2 This is a partial structural diagram of the sliding plate of a positioning fixture for CNC-machined precision parts proposed in this utility model.

[0021] Figure 3 This is a partial structural diagram of the worktable for a positioning fixture used in CNC machining of precision parts, as proposed in this utility model.

[0022] Figure 4 This is a partial structural diagram of the sleeve of a positioning fixture for CNC-machined precision parts proposed in this utility model.

[0023] Legend:

[0024] 1. Bearing plate; 101. Slide rail; 102. Slider; 103. Sliding plate; 104. Connecting rod; 105. Rotating block; 106. Outer support block; 107. Limiting rod; 108. Spring; 109. Stop block; 110. Mold; 2. Feeding assembly; 201. Slide body; 202. Electric slide; 203. Worktable; 204. Fixed block; 205. Electric push rod; 3. Moving assembly; 301. Bearing block; 302. Bracket; 303. Hydraulic rod; 304. Support plate; 305. Limiting post; 306. Sleeve; 307. Motor; 308. First gear; 309. Second gear; 310. Rotating post; 311. Support plate; 312. Baffle; 313. Limiting plate. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a positioning fixture for precision CNC machined parts, comprising a support plate 1, a slide rail 101 fixedly connected to the upper surface of the support plate 1, a slider 102 slidably connected to the outer wall of the slide rail 101, a sliding plate 103 fixedly connected to the upper surface of the slider 102, a connecting rod 104 rotatably connected to the outer wall of the sliding plate 103, a rotating block 105 rotatably connected to the inner wall of the connecting rod 104, and the lower surface of the rotating block 105 rotatably connected to the inner wall of the support plate 1. The upper surface of the sliding plate 103 is fixedly connected to... An outer support block 106 is attached. A limit rod 107 is fixedly connected to the inner wall of one side of the outer support block 106, and the inner wall of the other side of the outer support block 106 is slidably connected to the outer wall of the limit rod 107. A spring 108 is provided on the outer wall of the limit rod 107. The two ends of the spring 108 are fixedly connected to the outer wall of the outer support block 106. A stop block 109 is fixedly connected to the upper surface of the bearing plate 1. The outer wall of the stop block 109 is slidably connected to the outer wall of the sliding plate 103. A mold 110 is fixedly connected to the upper surface of the bearing plate 1. A feeding assembly 2 is provided on the lower surface of the bearing plate 1.

[0027] Specifically, the electric push rod 205 fixed on the fixed block 204 is activated to move the sliding plate 103, causing the slider 102 fixed on the lower surface of the sliding plate 103 to slide on the outer wall of the slide rail 101 fixed on the bearing plate 1. The sliding plate 103 drives the connecting rod 104 to rotate, causing the rotating block 105 to rotate. The rotating block 105 drives the sliding plate 103 on the other side to move, causing the outer support block 106 to slide on the outer wall of the limiting rod 107. The stop block 109 can restrict the movement of the sliding plate 103 on the other side. The movement of the outer support blocks 106 on both sides will compress the spring 108, so that the outer support blocks 106 can return to their original position. The outward movement of the outer support blocks 106 can clamp the workpiece on the mold 110. This component can quickly assemble and disassemble workpieces to achieve a fast loading and unloading speed.

[0028] Reference Figure 1 and Figure 3 The feeding assembly 2 includes a slide body 201, the upper surface of which is fixedly connected to the lower surface of the support plate 1. An electric slide 202 is slidably connected to the inner wall of the slide body 201. A worktable 203 is fixedly connected to the lower surface of the electric slide 202. A fixing block 204 is fixedly connected to the upper surface of the worktable 203. An electric push rod 205 is fixedly connected to the upper surface of the fixing block 204. The outer wall of the electric push rod 205 is slidably connected to the outer wall of the slide plate 103. A moving assembly 3 is provided below the worktable 203.

[0029] Specifically, the electric slide 202 fixed on the worktable 203 is activated to drive the slide body 201 on its outer wall to move the clamping assembly to the designated position. This assembly can move the parts that need to be loaded and unloaded to a position suitable for worker operation, so as to facilitate worker operation.

[0030] Reference Figure 1 and Figure 4The moving component 3 includes a support block 301, which is positioned above the worktable 203. A bracket 302 is fixedly connected to the upper surface of the support block 301, and a hydraulic rod 303 is fixedly connected to the upper surface of the bracket 302. A support plate 304 is fixedly mounted on the output end of the hydraulic rod 303. A limit post 305 is fixedly connected to the lower surface of the support plate 304, and a sleeve 306 is slidably connected to the outer wall of the limit post 305. The outer wall of the sleeve 306 is fixedly connected to the inner wall of the bracket 302. A motor 307 is fixedly connected to the lower surface of the support plate 304, and the output end of the motor 307 is fixedly mounted on the inner wall of the support 302. A first gear 308 is provided, and a second gear 309 is meshed with the tooth end of the first gear 308; a rotating column 310 is rotatably connected to the inner wall of the second gear 309, and the lower surface of the rotating column 310 is fixedly connected to the upper surface of the support plate 304; a support plate 311 is fixedly connected to the upper surface of the second gear 309, a baffle 312 is fixedly connected to the lower surface of the support plate 311, a limit plate 313 is slidably connected to the outer wall of the baffle 312, the lower surface of the limit plate 313 is fixedly connected to the upper surface of the support plate 304, and the upper surface of the support plate 311 is fixedly connected to the lower surface of the electric slide table 202.

[0031] Specifically, by activating the hydraulic rod 303 fixed on the bracket 302, the pallet 304 is moved. By setting the bracket 302 on the inner wall of the bracket 302, the limiting post 305 fixed on the lower surface of the pallet 304 slides on the inner wall of the sleeve 306, which can achieve a more stable movement of the pallet 304. Activating the motor 307 fixed on the lower surface of the pallet 304 drives the first gear 308 to rotate, which in turn drives the second gear 309 to rotate on the outer wall of the rotating column 310. The second gear 309 drives the support plate 311 to move the baffle 312. By setting the limiting plate 313, the rotation of the support plate 311 can be restricted. By setting the bearing block 301 to support the overall moving assembly 3, the assembly can move the workpiece to the designated position for processing.

[0032] Working principle: When the device is needed, the electric push rod 205 fixed on the fixed block 204 is activated to push the sliding plate 103 to move, causing the slider 102 to slide on the outer wall of the slide rail 101. The movement of the sliding plate 103 drives the connecting rod 104 to rotate, causing the rotating block 105 to rotate. The movement of the outer support block 106 causes the spring 108 to compress, allowing the spring 108 to externally support the workpiece clamped on the mold 110. The limiting rod 107 can achieve a more stable sliding effect for the outer support block 106. (The last sentence appears to be incomplete and possibly refers to a setting or stop mechanism.) Block 109 can restrict the sliding of the sliding plate 103 on the other side. This component can quickly assemble and disassemble workpieces to achieve a fast loading and unloading speed. Activating the electric slide 202 fixed on the worktable 203 causes the slide body 201 to slide against the outer wall of the electric slide 202, which can move the parts that need to be loaded and unloaded to a position suitable for worker operation, thus facilitating worker operation. By activating the hydraulic rod 303 fixed on the bracket 302, the pallet 304 is moved. The movement of the pallet 304 drives the rotating column 310 to move, thereby moving the support plate 311. By setting a sleeve 306 and a limiting post 305 inside the hydraulic rod 303, the movement of the pallet 304 can be made more stable. At the same time, the motor 307 fixed on the lower surface of the pallet 304 can be started to drive the first gear 308 to rotate, causing the second gear 309 to rotate on the outer wall of the rotating column 310. The rotation of the second gear 309 drives the support plate 311 to rotate, thereby causing the clamping assembly on it to rotate the workpiece. By setting a baffle 312 and a limiting plate 313, the rotation of the support plate 311 can be restricted. This assembly can achieve the effect of moving the workpiece to a designated position for processing. This tooling not only solves the problem of low clamping efficiency of traditional precision parts processing positioning tooling, which usually requires workers to install the parts to be processed using clamps and screws, relying on manual operation, which is time-consuming and labor-intensive and cannot meet the needs of rapid loading and unloading in mass production, but also solves the problem of traditional workpiece processing methods, which mostly rely on manual handling and manual adjustment of workpiece position, which not only requires a lot of manual labor, but also the uncertainty of human operation can easily lead to workpiece positioning deviation.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning tool for precision parts of CNC machining, comprising a bearing plate (1), characterized in that: The upper surface of the bearing plate (1) is fixedly connected with a sliding rail (101), the outer wall of the sliding rail (101) is slidably connected with a sliding block (102), the upper surface of the sliding block (102) is fixedly connected with a sliding plate (103), the outer wall of the sliding plate (103) is rotatably connected with a connecting rod (104), the inner wall of the connecting rod (104) is rotatably connected with a rotating block (105), the lower surface of the rotating block (105) is rotatably connected with the inner wall of the bearing plate (1), the upper surface of the sliding plate (103) is fixedly connected with an outer support block (106), the inner wall of one side of the outer support block (106) is fixedly connected with a limiting rod (107), the inner wall of the other side of the outer support block (106) is slidably connected with the outer wall of the limiting rod (107), the outer wall of the limiting rod (107) is provided with a spring (108), both ends of the spring (108) are fixedly connected with the outer wall of the outer support block (106), the upper surface of the bearing plate (1) is fixedly connected with a stop block (109), the outer wall of the stop block (109) is slidably connected with the outer wall of the sliding plate (103), the upper surface of the bearing plate (1) is fixedly connected with a mold (110), and the lower surface of the bearing plate (1) is provided with a feeding assembly (2).

2. The positioning tooling for precision parts machined by CNC according to claim 1, characterized in that: The feeding assembly (2) comprises a sliding table body (201), the upper surface of the sliding table body (201) is fixedly connected with the lower surface of the bearing plate (1), and the inner wall of the sliding table body (201) is slidably connected with an electric sliding table (202).

3. The positioning tooling for precision parts machined by CNC according to claim 2, characterized in that: The upper surface of the workbench (203) is fixedly connected with a fixed block (204), the upper surface of the fixed block (204) is fixedly connected with an electric push rod (205), the outer wall of the electric push rod (205) is slidably connected with the outer wall of the sliding plate (103), and the lower portion of the workbench (203) is provided with a moving assembly (3).

4. The positioning tooling for precision parts machined by CNC according to claim 3, characterized in that: The moving assembly (3) comprises a bearing block (301), the upper portion of the bearing block (301) is arranged below the workbench (203), the upper surface of the bearing block (301) is fixedly connected with a support (302), the upper surface of the support (302) is fixedly connected with a hydraulic rod (303), and the output end of the hydraulic rod (303) is fixedly provided with a supporting plate (304).

5. The positioning tooling for precision parts machined by CNC according to claim 4, characterized in that: The lower surface of the supporting plate (304) is fixedly connected with a limiting column (305), the outer wall of the limiting column (305) is slidably connected with a sleeve (306), and the outer wall of the sleeve (306) is fixedly connected with the inner wall of the support (302).

6. The positioning tooling for precision parts machined by CNC according to claim 5, characterized in that: The lower surface of the supporting plate (304) is fixedly connected with a motor (307), the output end of the motor (307) is fixedly provided with a first gear (308), and the tooth end of the first gear (308) is meshedly connected with a second gear (309).

7. The positioning tooling for precision parts machined by CNC according to claim 6, characterized in that: The inner wall of the second gear (309) is rotatably connected with a rotating column (310), and the lower surface of the rotating column (310) is fixedly connected with the upper surface of the supporting plate (304).

8. The positioning tooling for precision parts machined by CNC according to claim 7, characterized in that: The upper surface of the second gear (309) is fixedly connected with a support plate (311), the lower surface of the support plate (311) is fixedly connected with a baffle (312), the outer wall of the baffle (312) is slidingly connected with a limiting plate (313), the lower surface of the limiting plate (313) is fixedly connected with the upper surface of the supporting plate (304), and the upper surface of the support plate (311) is fixedly connected with the lower surface of the electric sliding table (202).

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