Expansion core clamp for rough machining positioning

Abstract

The utility model relates to the technical field of machining, in particular to an expansion core clamp for rough machining positioning, which comprises a base and a supporting rod, the supporting rod is fixedly connected on the upper surface of the base, a frame is rotatably connected above the supporting rod through a pin shaft, a sliding block is slidably connected inside the frame, a vertical plate is fixedly connected above the sliding block, and the vertical plate is fixedly connected above the sliding block. A core expanding mechanism is arranged on the left side of the vertical plate, a support is fixedly connected to the upper surface of the base, and a rotating mechanism is arranged in the support. Through cooperation of a cylinder, a sleeve, a first motor, a first screw, a connecting rod and a clamping plate, the first motor drives the first screw to rotate, the first screw drives the sleeve to slide on the outer wall of the cylinder when rotating, the sleeve drives the connecting rod to move, the connecting rod drives the clamping plate to move, the clamping plate is attached to the inner wall of a workpiece hole core, and core expansion positioning is conducted on a workpiece. And the positions of the clamping plates can be adjusted, so that hole cores with different sizes can be conveniently positioned according to actual use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a core expansion clamp used for rough processing positioning. Background Art

[0002] The core expansion fixture is a positioning core expansion fixture used for positioning holes in mechanical processing. The core expansion fixture is widely used in the mechanical field.

[0003] For example, the patent number CN220178203U is a core expansion fixture for rough machining positioning, including a centering guide seat, a pull rod is inserted in the centering guide seat, the tail end of the pull rod is fixedly connected to the centering telescopic pull plate, the centering telescopic pull plate is matched with a centering telescopic pressure head, the centering telescopic pull plate is provided with an inclined convex strip, the centering telescopic pressure head is provided with an inclined conical groove, the convex strip matches the conical groove, and a dust cover is provided at the tail end of the centering guide seat. The above documents still have shortcomings. When in use, the expansion amount is large, and it is suitable for parts with different apertures within a relative range, and has a certain degree of versatility. , taking the part's own datum as the datum, without changing the datum, its error is the part's own error, and there will be no clamping error, so the positioning accuracy is high. Due to the large expansion and contraction of the pressure head, the gap between it and the product can be large or small, which is convenient for the operator to clamp. However, the core expansion fixture in the above document can only position the hole core of a certain size when fixing the workpiece, and it is not convenient to position the hole core of different sizes according to actual use requirements. At the same time, when rough processing is performed on the workpiece, it can only make the workpiece in a horizontal state, which is not convenient to adjust the inclination angle of the workpiece according to actual processing requirements. Utility Model Content

[0004] The utility model aims to solve the problem that it is inconvenient to position hole cores of different sizes according to actual use requirements, and proposes a core expansion clamp for rough machining positioning.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A core expanding fixture for rough machining positioning is designed, comprising a base and a support rod, the support rod is fixedly connected to the upper surface of the base, a frame is rotatably connected to the top of the support rod through a pin, a slider is slidably connected to the inside of the frame, a vertical plate is fixedly connected to the top of the slider, a core expanding mechanism is arranged on the left side of the vertical plate, a bracket is fixedly connected to the upper surface of the base, and a rotating mechanism is arranged inside the bracket.

[0007] Preferably, the core expansion mechanism includes a cylinder, the outer wall of the right end of the cylinder is rotatably connected to the vertical plate through a bearing, the outer wall of the cylinder is slidably connected to a sleeve, the outer wall of the sleeve is fixedly connected to a first motor, the output shaft of the first motor is fixedly connected to a first screw, the outer wall of the first screw is connected to the cylindrical thread, the outer wall of the sleeve is rotatably connected to a connecting rod through a pin shaft, the end of the connecting rod is rotatably connected to a splint through a pin shaft, and the outer wall of the splint is slidably connected to the vertical plate.

[0008] Preferably, the rotating mechanism includes a first handle, which is rotatably connected to the bracket via a bearing, a bevel gear group is fixedly connected to the end of the first handle, a second screw is fixedly connected to the top of the bevel gear group, an outer wall of the lower end of the second screw is rotatably connected to the bracket via a bearing, a first threaded block is threadedly connected to the outer wall of the second screw, a pin is fixedly connected to the surface of the first threaded block, the outer wall of the pin is slidably connected to a slide groove provided in a cross bar, and the cross bar is fixed to the outer wall of the frame.

[0009] Preferably, the frame and outer walls at both ends of the third screw are rotatably connected via bearings, and a second handle is fixedly connected to the end of the third screw.

[0010] Preferably, the cylinder is fixedly connected to the output shaft of the second motor, and the second motor is fixedly connected to the outer wall of the vertical plate.

[0011] Preferably, the outer wall of the third screw rod is threadedly connected to a second threaded block, and the outer wall of the second threaded block is fixedly connected to the sliding block.

[0012] The utility model proposes a core expansion clamp for rough machining positioning, which has the beneficial effects of: through the cooperation between the cylinder, the sleeve, the first motor, the first screw, the connecting rod and the clamping plate, the first motor drives the first screw to rotate, and the first screw drives the sleeve to slide on the outer wall of the cylinder when rotating, the sleeve drives the connecting rod to move, and the connecting rod drives the clamping plate to move, the clamping plate fits with the inner wall of the workpiece hole core to expand the workpiece, and the position of the clamping plate can be adjusted, which is convenient for positioning the hole cores of different sizes according to actual use requirements.

[0013] Through the cooperation between the first handle, the bevel gear group, the second screw, the first threaded block, the pin rod and the cross bar, the first handle drives the bevel gear group to rotate, the bevel gear group drives the second screw to rotate, the second screw drives the first threaded block to move, the first threaded block drives the pin rod to move, the pin rod drives the cross bar to move, the cross bar drives the frame to rotate, and then drives the workpiece to rotate, the inclination angle of the workpiece changes, and the inclination angle of the workpiece can be adjusted according to actual processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural sectional view of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the connection between the second screw rod and the pin rod in the utility model;

[0017] Figure 4 It is a schematic structural diagram of the connection between the cylinder, the sleeve and the first motor in the utility model.

[0018] In the figure: 1, base, 2, support rod, 3, core expansion mechanism, 301, cylinder, 302, sleeve, 303, first motor, 304, first screw, 305, connecting rod, 306, clamping plate, 4, rotating mechanism, 401, first handle, 402, bevel gear set, 403, second screw, 404, first threaded block, 405, pin, 406, cross bar, 4a1, limit block, 5, frame, 6, slider, 7, vertical plate, 8, bracket, 9, third screw, 10, second handle, 11, second motor, 12, second threaded block. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Embodiment 1:

[0021] See attached Figure 1-4 : In the present embodiment, a core expanding fixture for rough machining positioning includes a base 1 and a support rod 2, the support rod 2 is fixedly connected to the upper surface of the base 1, and a frame 5 is rotatably connected to the upper part of the support rod 2 through a pin shaft, and the support rod 2 supports the frame 5, and a slider 6 is slidably connected to the inside of the frame 5, and the slider 6 slides inside the frame 5. A vertical plate 7 is fixedly connected to the upper part of the slider 6, and the slider 6 drives the vertical plate 7 to move. A core expanding mechanism 3 is arranged on the left side of the vertical plate 7, and the core expanding mechanism 3 positions the workpiece, and a bracket 8 is fixedly connected to the upper surface of the base 1, and a rotating mechanism 4 is arranged inside the bracket 8, and the rotating mechanism 4 adjusts the inclination angle of the workpiece, and the outer walls of the frame 5 and the two ends of the third screw rod 9 are rotatably connected through bearings, and a second handle 10 is fixedly connected to the end of the third screw rod 9, and the second handle 10 drives the third screw rod 9 to rotate, and the outer wall of the third screw rod 9 is threadedly connected to a second threaded block 12, and the third screw rod 9 drives the second threaded block 12 to move, and the outer wall of the second threaded block 12 is fixedly connected to the slider 6, and the second threaded block 12 drives the slider 6 to slide.

[0022] The core expansion mechanism 3 includes a cylinder 301, a sleeve 302, a first motor 303, a first screw 304, a connecting rod 305 and a clamping plate 306. The outer wall of the right end of the cylinder 301 is rotatably connected to the vertical plate 7 through a bearing. The outer wall of the cylinder 301 is slidably connected to the sleeve 302. The sleeve 302 slides on the outer wall of the cylinder 301. The outer wall of the sleeve 302 is fixedly connected to the first motor 303. The output shaft of the first motor 303 is fixedly connected to the first screw 304. The first motor 303 drives the first screw 304 to rotate. The outer wall of the first screw rod 304 is threadedly connected to the cylinder 301, the outer wall of the sleeve 302 is rotatably connected to the connecting rod 305 through a pin shaft, the sleeve 302 drives the connecting rod 305 to move, the end of the connecting rod 305 is rotatably connected to the clamping plate 306 through a pin shaft, the connecting rod 305 drives the clamping plate 306 to slide, the outer wall of the clamping plate 306 is slidably connected to the vertical plate 7, the cylinder 301 is fixedly connected to the output shaft of the second motor 11, the second motor 11 drives the cylinder 301 to rotate, and the second motor 11 is fixedly connected to the outer wall of the vertical plate 7;

[0023] The first motor 303 drives the first screw 304 to rotate. When the first screw 304 rotates, it drives the sleeve 302 to slide on the outer wall of the cylinder 301. The sleeve 302 drives the connecting rod 305 to move. The connecting rod 305 drives the clamping plate 306 to move. The clamping plate 306 fits against the inner wall of the workpiece hole core to expand and position the workpiece. The position of the clamping plate 306 can be adjusted to facilitate the positioning of hole cores of different sizes according to actual usage requirements.

[0024] The rotating mechanism 4 includes a first handle 401, a bevel gear set 402, a second screw rod 403, a first threaded block 404, a pin rod 405 and a cross bar 406. The first handle 401 is rotatably connected to the bracket 8 through a bearing. The end of the first handle 401 is fixedly connected to the bevel gear set 402. The first handle 401 drives the bevel gear set 402 to rotate. The second screw rod 403 is fixedly connected to the upper part of the bevel gear set 402. The bevel gear set 402 drives the second screw rod 403 to rotate. The outer end of the second screw 403 is The wall is rotatably connected to the bracket 8 through a bearing, the outer wall of the second screw rod 403 is threadedly connected to the first thread block 404, the second screw rod 403 drives the first thread block 404 to move, the surface of the first thread block 404 is fixedly connected with a pin rod 405, the first thread block 404 drives the pin rod 405 to move, the outer wall of the pin rod 405 is slidably connected to the slide groove provided in the cross bar 406, the pin rod 405 drives the cross bar 406 to move, the cross bar 406 is fixedly connected to the outer wall of the frame 5, and the cross bar 406 drives the frame 5 to rotate;

[0025] The first handle 401 drives the bevel gear set 402 to rotate, the bevel gear set 402 drives the second screw 403 to rotate, the second screw 403 drives the first threaded block 404 to move, the first threaded block 404 drives the pin 405 to move, the pin 405 drives the cross bar 406 to move, the cross bar 406 drives the frame 5 to rotate, and then drives the workpiece to rotate, the inclination angle of the workpiece changes, and the inclination angle of the workpiece can be adjusted according to actual processing requirements.

[0026] Working principle:

[0027] When the core expansion fixture for rough machining positioning is used, the core hole of the workpiece is sleeved on the outside of the clamping plate 306, and the first motor 303 is started. The first motor 303 drives the first screw 304 to rotate. When the first screw 304 rotates, it drives the sleeve 302 to slide on the outer wall of the cylinder 301. The sleeve 302 drives the connecting rod 305 to move, and the connecting rod 305 drives the clamping plate 306 to move. The clamping plate 306 fits the inner wall of the core hole of the workpiece to expand the core of the workpiece. The position of the clamping plate 306 can be adjusted, which is convenient for positioning core holes of different sizes according to actual use requirements. The second handle 10 is rotated, and the second handle 10 drives the third screw 9 to rotate. The third screw rod 9 drives the second threaded block 12 to move, the second threaded block 12 drives the slider 6 to slide, the slider 6 drives the vertical plate 7 to move, and then drives the workpiece to move, rotate the first handle 401, the first handle 401 drives the bevel gear set 402 to rotate, the bevel gear set 402 drives the second screw rod 403 to rotate, the second screw rod 403 drives the first threaded block 404 to move, the first threaded block 404 drives the pin rod 405 to move, the pin rod 405 drives the cross bar 406 to move, the cross bar 406 drives the frame 5 to rotate, and then drives the workpiece to rotate, the inclination angle of the workpiece changes, and the inclination angle of the workpiece can be adjusted according to actual processing requirements.

[0028] Embodiment 2:

[0029] See attached Figure 1-4 : In this embodiment, a core expansion fixture for rough machining positioning, the rotating mechanism 4 also includes a limit block 4a1, the limit block 4a1 is fixedly connected to the upper end of the second screw rod 403, and the limit block 4a1 prevents the first threaded block 404 from being separated from the second screw rod 403;

[0030] Through the action of the limit block 4a1 , the limit block 4a1 is fixed to the upper end of the second screw rod 403 , and the limit block 4a1 prevents the first threaded block 404 from being separated from the second screw rod 403 .

[0031] Working principle:

[0032] The limiting block 4a1 is fixedly connected to the upper end of the second screw rod 403 , and the limiting block 4a1 prevents the first threaded block 404 from being separated from the second screw rod 403 .

[0033] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A core expansion fixture for rough machining positioning, comprising a base (1) and a support rod (2), wherein the support rod (2) is fixedly connected to the upper surface of the base (1), characterized in that: A frame (5) is rotatably connected to the top of the support rod (2) via a pin shaft, a slider (6) is slidably connected to the inside of the frame (5), a vertical plate (7) is fixedly connected to the top of the slider (6), a core expansion mechanism (3) is arranged on the left side of the vertical plate (7), a bracket (8) is fixedly connected to the upper surface of the base (1), and a rotating mechanism (4) is arranged inside the bracket (8).

2. The core expansion fixture for rough machining positioning according to claim 1, characterized in that: The core expansion mechanism (3) comprises a cylinder (301), the outer wall of the right end of the cylinder (301) is rotatably connected to the vertical plate (7) via a bearing, the outer wall of the cylinder (301) is slidably connected to a sleeve (302), the outer wall of the sleeve (302) is fixedly connected to a first motor (303), the output shaft of the first motor (303) is fixedly connected to a first screw (304), the outer wall of the first screw (304) is threadedly connected to the cylinder (301), the outer wall of the sleeve (302) is rotatably connected to a connecting rod (305) via a pin shaft, the end of the connecting rod (305) is rotatably connected to a clamping plate (306) via a pin shaft, and the outer wall of the clamping plate (306) is slidably connected to the vertical plate (7).

3. The core expansion fixture for rough machining positioning according to claim 1, characterized in that: The rotating mechanism (4) comprises a first handle (401), the first handle (401) is rotatably connected to the bracket (8) via a bearing, a bevel gear set (402) is fixedly connected to the end of the first handle (401), a second screw rod (403) is fixedly connected above the bevel gear set (402), the outer wall of the lower end of the second screw rod (403) is rotatably connected to the bracket (8) via a bearing, the outer wall of the second screw rod (403) is threadedly connected to a first threaded block (404), the surface of the first threaded block (404) is fixedly connected to a pin rod (405), the outer wall of the pin rod (405) is slidably connected to a sliding groove provided in a cross rod (406), and the cross rod (406) is fixedly connected to the outer wall of the frame (5).

4. The core expansion fixture for rough machining positioning according to claim 1, characterized in that: The frame (5) and the outer walls at both ends of the third screw rod (9) are rotatably connected via bearings, and a second handle (10) is fixedly connected to the end of the third screw rod (9).

5. The core expansion fixture for rough machining positioning according to claim 2, characterized in that: The cylinder (301) is fixedly connected to the output shaft of the second motor (11), and the second motor (11) is fixedly connected to the outer wall of the vertical plate (7).

6. The core expansion fixture for rough machining positioning according to claim 4, characterized in that: The outer wall of the third screw rod (9) is threadedly connected to a second threaded block (12), and the outer wall of the second threaded block (12) is fixedly connected to the sliding block (6).

Images