Sliding block type expanding mandrel tool

Abstract

The utility model discloses a slider type expanding mandrel tool, which belongs to the technical field of machining and comprises an outer shaft, fixing tables are uniformly distributed on the periphery of the surface of the outer shaft, supporting rods are rotatably connected to the fixing tables through pin shafts, a supporting plate is arranged right above the supporting rods, one end of the supporting plate is welded with a slider, and the other end of the supporting plate is welded with the slider. A guide column is fixed to one end of the exterior of the outer shaft, and an inner shaft is slidably connected to the interior of the outer shaft. The mandrel tool is arranged in a sliding structure composed of the sliding block, the sliding frame, the supporting plate, the supporting rod and the like, rapid clamping of a mandrel workpiece can be achieved, compared with a traditional clamping tool, the clamping time is greatly shortened, the workpiece clamping efficiency is improved, and the machining cost is reduced. And when a workpiece with thin wall thickness is clamped, the situations that the outer surface of the workpiece is scratched and the workpiece is deformed are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a slider type expansion mandrel tooling. Background Art

[0002] The core shaft has different structures, different forces, and different gear fits. The installation methods are also different. Generally, there are two types of fits: sliding fit and interference fit. Sliding fit: For example, for sliding gears, align the shaft to the position and angle and then gently push it in. Interference fit: When the interference is small, you can use a heavy hammer to hit the shaft end to drive the shaft in. Cover the shaft end with other objects before hitting to avoid damaging the shaft end.

[0003] Most of the existing mandrel tooling basically processes by clamping the outer surface of the workpiece. When clamping the workpiece, it is often necessary to constantly adjust the clamping angle, which not only reduces production efficiency, but also makes it easier to scratch the outer surface and cause deformation of the workpiece when clamping a workpiece with a thin wall thickness. Utility Model Content

[0004] The main purpose of the utility model is to provide a slider type expansion mandrel tooling.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A slider-type expansion mandrel tooling comprises an outer shaft, wherein fixed platforms are evenly distributed around the surface of the outer shaft, a support rod is rotatably connected to the fixed platform via a pin, a support plate is arranged directly above the support rod, a slider is welded to one end of the support plate, a guide column is fixed to one end of the outer side of the outer shaft, an inner shaft is slidably connected to the inside of the outer shaft, a boss is nested and fixed on the inner shaft, the guide column slides through the boss, and a guide rail is formed on the surface of the inner shaft.

[0007] Preferably, a guide groove is provided on the inner wall of the outer shaft, and the guide groove is limitedly slidably connected to the guide rail of the inner shaft.

[0008] Preferably, a rib plate is welded below the support plate, the rib plate is rotatably connected to the support rod via an axle pin, and the support plate is in a T-shaped arc shape.

[0009] Preferably, four groups of slides are welded and fixed on the outer wall of the boss, and slide grooves are arranged inside the slides, and the sliders slide with the slide grooves in a limited manner.

[0010] Preferably, one end of the guide column is processed with a thread, and a locking nut is screwed onto the thread.

[0011] Preferably, one outer end of the inner shaft is connected to a drive motor, and the drive motor is externally connected to a machine tool control console.

[0012] Beneficial technical effects of the utility model:

[0013] The utility model can realize rapid clamping of the core shaft workpiece by arranging the core shaft tooling in a sliding structure composed of a slide block, a slide frame, a support plate and a support rod, which greatly reduces the clamping time compared with the traditional clamping tooling, not only improves the efficiency of clamping the workpiece, but also avoids scratching the outer surface of the workpiece and causing deformation of the workpiece when clamping a workpiece with a thin wall thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a preferred embodiment of a slider-type expansion mandrel tooling according to the utility model;

[0015] Figure 2 It is a schematic diagram of the rear view structure of a preferred embodiment of a slider-type expansion mandrel tooling according to the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the outer shaft in a preferred embodiment of a slider-type expansion mandrel tooling according to the utility model;

[0017] Figure 4 It is a cross-sectional schematic diagram of a preferred embodiment of a slider-type expansion mandrel tooling according to the utility model;

[0018] 1. Outer shaft; 2. Fixed platform; 3. Support rod; 4. Rib plate; 5. Support plate; 6. Slide; 7. Slider; 8. Guide rail; 9. Guide column; 10. Drive motor; 11. Inner shaft; 12. Locking nut; 13. Slide groove; 14. Guide groove; 15. Boss. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0020] like Figure 1-Figure 4 As shown, the present embodiment provides a slider-type expansion mandrel tooling, comprising an outer shaft 1, with fixed platforms 2 evenly distributed around the surface of the outer shaft 1, with a support rod 3 rotatably connected to the fixed platform 2 through a pin shaft, with a support plate 5 arranged directly above the support rod 3, with a slider 7 welded to one end of the support plate 5, a guide column 9 fixed to one end of the outer side of the outer shaft 1, an inner shaft 11 slidably connected to the inside of the outer shaft 1, a boss 15 nested and fixed on the inner shaft 11, the guide column 9 slides through the boss 15, and a guide rail 8 is formed on the surface of the inner shaft 11.

[0021] The inner wall of the outer shaft 1 is provided with a guide groove 14, which is limitedly slidably connected with the guide rail 8 of the inner shaft 11. The cooperation between the four guide grooves 14 and the guide rail 8 makes the radial movement more precise, which is beneficial to the installation and positioning of the workpiece.

[0022] A rib plate 4 is welded below the support plate 5, and the rib plate 4 is rotatably connected to the support rod 3 through an axle pin. The support plate 5 is in a T-shaped arc shape. The arc-shaped support plate 5 is not only conducive to increasing the contact area with the workpiece but also avoids scratching the workpiece.

[0023] Four sets of slides 6 are welded and fixed on the outer wall of the boss 15. A slide groove 13 is set in the slide 6. The slider 7 slides with the slide groove 13 in a limited position. The slide groove 13 is repeatedly milled to achieve precise matching with the slider 7 to reduce axial deviation when the workpiece is clamped.

[0024] One end of the guide post 9 is processed with a thread, and a locking nut 12 is screwed on the thread. The locking nut 12 is used in conjunction with a nut spring washer and a flat washer to make the fixation more secure.

[0025] One end of the outer portion of the inner shaft 11 is connected to a driving motor 10 , and the driving motor 10 is externally connected to a machine tool control console.

[0026] Working principle of this device: When this device is used, the slider 7 is adjusted to move up and down according to the size of the inner diameter of the core shaft workpiece. The support plate 5 connected to the slider 7 contacts the inner diameter of the workpiece. The arc structure of the support plate 5 is beneficial to increase the contact area with the workpiece and avoid scratching the workpiece. When clamping the workpiece, the guide groove 14 on the inner wall of the outer shaft 1 is slidably connected with the guide rail 8 on the inner shaft 11. The outer shaft 1 slides backward to drive the support rod 3 to move. The support plate 5 expands the inner diameter under the action of the support rod 3. When clamping the workpiece, the locking screw is screwed on through the thread on the guide column 9 at one end of the inner shaft 11 to firmly expand the inner diameter of the workpiece.

[0027] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A slider type expansion mandrel tooling, characterized in that: The invention comprises an outer shaft (1), wherein fixed platforms (2) are evenly distributed around the surface of the outer shaft (1), a support rod (3) is rotatably connected to the fixed platform (2) via a pin shaft, a support plate (5) is arranged directly above the support rod (3), a slider (7) is welded to one end of the support plate (5), a guide column (9) is fixed to one end of the outer side of the outer shaft (1), an inner shaft (11) is slidably connected to the inside of the outer shaft (1), a boss (15) is nested and fixed on the inner shaft (11), the guide column (9) slides through the boss (15), and a guide rail (8) is formed on the surface of the inner shaft (11).

2. A slider type expansion mandrel tooling according to claim 1, characterized in that: The inner wall of the outer shaft (1) is provided with a guide groove (14), and the guide groove (14) is in limited sliding connection with the guide rail (8) of the inner shaft (11).

3. A slider type expansion mandrel tooling according to claim 2, characterized in that: A rib plate (4) is welded below the support plate (5), the rib plate (4) is rotatably connected to the support rod (3) via an axle pin, and the support plate (5) is in a T-shaped arc shape.

4. A slider type expansion mandrel tooling according to claim 3, characterized in that: Four groups of slides (6) are welded and fixed on the outer wall of the boss (15), a slide groove (13) is arranged inside the slide (6), and the slider (7) slides with the slide groove (13) in a limited manner.

5. The slider type expansion mandrel tooling according to claim 4, characterized in that: One end of the guide column (9) is processed with a thread, and a locking nut (12) is screwed onto the thread.

6. A slider type expansion mandrel tooling according to claim 5, characterized in that: One end of the outer portion of the inner shaft (11) is connected to a drive motor (10), and the drive motor (10) is externally connected to a machine tool control console.

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