Quick switching mandrel

Abstract

The utility model provides the quick switching mandrel which replaces a conical connection form in the traditional technology, and the mandrel base body is mounted on the machine tool through the rotating bearing, so that the mandrel base body is rotationally mounted on the machine tool, and the mandrel base body can be driven to rotate by using an external device. When production changing is needed, the whole mandrel does not need to be replaced, only different shaft tips or flange plates need to be replaced, the whole replacement process is more convenient, the situation that the precision of the mandrel is reduced due to knocking is avoided, and then production safety and part quality are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of induction hardening treatment, and particularly relates to a quick-change mandrel. Background Art

[0002] At present, in the field of induction hardening treatment, machine tools all use integral mandrels. The mandrel and the machine tool base adopt a tapered fit. During daily production, the inner hole size of different products is matched by changing the diameter of the mandrel. When changing products, the entire mandrel needs to be replaced. However, the replacement of the mandrel is extremely difficult and requires knocking during replacement. This replacement method is both time-consuming and laborious, and it is also easy to cause the radial runout accuracy of the mandrel to decrease due to knocking replacement, resulting in an increase in the swing of the parts during processing, and there are potential safety and quality hazards. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a quick-change mandrel to solve the problem that the mandrel in the prior art is prone to safety and quality hazards due to difficult replacement.

[0004] In order to solve the above technical problems, the utility model is realized by adopting the following technical solutions:

[0005] A quick-change mandrel includes a mandrel base arranged on a machine tool base, and also includes a mandrel body in the shape of a quasi-cylindrical.

[0006] The front part of the mandrel body is a transmission area, and the rear part is an installation area; a raised limit ring is arranged in the middle of the mandrel body.

[0007] At least one rotating bearing is arranged on the mandrel base; the installation area of the mandrel body is fixedly and coaxially inserted into the inside of the rotating bearing.

[0008] The transmission area of the mandrel body can be coaxially and fixedly connected to a shaft tip or a flange.

[0009] The utility model also has the following features;

[0010] Further, it also includes a mandrel support pad;

[0011] The transmission area of the mandrel body is a stepped structure with three sections of radii increasing sequentially from front to back, including a first transmission section, a second transmission section, and a third transmission section;

[0012] The mandrel support pad is fixedly sleeved on the second transmission section and the third transmission section;

[0013] The shaft tip or the flange can be fixedly connected to the first transmission section.

[0014] Further, two rotating bearings are coaxially arranged on the mandrel base;

[0015] The installation area of the mandrel base is jointly connected to the two rotating bearings.

[0016] Furthermore, the rotating bearing is a 6205 bearing.

[0017] Compared with the prior art, the present utility model has the following technical effects:

[0018] (1) The quick-change mandrel of the present utility model replaces the conical connection form in the traditional technology. The mandrel base is installed on the machine tool through rotating bearings, realizing the rotational installation of the mandrel base on the machine tool, and enabling the mandrel base to be driven to rotate by an external device.

[0019] When production change is needed, there is no need to replace the entire mandrel. Only different types of shaft tips or flanges need to be replaced, making the entire replacement process more convenient, avoiding the decline in mandrel accuracy caused by knocking, and thus ensuring production safety and part quality.

[0020] (2) For the quick-change mandrel of the present utility model, a mandrel support pad is provided on the transmission part of the mandrel base. The outer diameter of the mandrel support pad can be adaptively adjusted according to the outer diameter of the shaft tip or flange that needs to be replaced. When production change is needed, only different specifications of shaft tips or flanges need to be replaced to achieve quick and lossless production change, thereby ensuring stable and uniform quenching quality, and being suitable for large-scale industrial use and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the quick-change mandrel of the present utility model;

[0022] Figure 2 is a schematic diagram of the connection relationship between the quick-change mandrel of the present utility model and the shaft tip;

[0023] Figure 3 is a schematic diagram of the connection relationship between the quick-change mandrel of the present utility model and the flange.

[0024] The meanings of the reference numerals in the drawings are as follows:

[0025] 1. Mandrel base; 2. Limit ring; 3. Rotating bearing; 4. Shaft tip; 5. Flange; 6. Mandrel support pad; 101. First transmission section; 102. Second transmission section; 103. Third transmission section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] It should be noted that all components in the present utility model, unless otherwise specified, are all components known in the prior art. For example, the shaft tip adopts a known and commonly used shaft tip.

[0027] The following are specific embodiments of the present utility model. It should be noted that the present utility model is not limited to the following specific embodiments, and any equivalent transformation based on the technical solution of this application falls within the protection scope of the present utility model.

[0028] As shown in Figures 1-3 , a quick-switching mandrel includes a mandrel base disposed on a machine tool base, and also includes a mandrel body 1 in the shape of a quasi-cylindrical.

[0029] The front part of the mandrel body 1 is a transmission area, and the rear part is an installation area; a raised limit ring 2 is provided in the middle of the mandrel body 1.

[0030] At least one rotating bearing 3 is provided on the mandrel base; the installation area of the mandrel body 1 is fixedly and coaxially inserted into the inside of the rotating bearing 3.

[0031] The transmission area of the mandrel body 1 can be coaxially and fixedly connected to a shaft-type center 4 or a flange 5.

[0032] The quick-switching mandrel of the present utility model eliminates the conical connection form in the traditional technology. The mandrel body 1 is installed on the machine tool through the rotating bearing 3, realizing the rotational installation of the mandrel body 1 on the machine tool, and can use an external device to drive the mandrel body to rotate.

[0033] When production change is needed, there is no need to replace the entire mandrel. Only different shaft-type centers 4 or flanges 5 need to be replaced, making the entire replacement process more convenient, avoiding the decrease in the accuracy of the mandrel body 1 caused by knocking, and thus ensuring production safety and part quality.

[0034] As a preferred solution, it further includes a mandrel support pad 6.

[0035] The transmission area of the mandrel body 1 is a stepped structure with three sections of radii increasing sequentially from front to back, including a first transmission section 101, a second transmission section 102, and a third transmission section 103.

[0036] The mandrel support pad 6 is fixedly sleeved on the second transmission section 102 and the third transmission section 103.

[0037] The shaft-type center 4 or the flange 5 is fixedly connected to the first transmission section 101.

[0038] A mandrel support pad 6 is provided on the transmission part of the mandrel body. The outer diameter of the mandrel support pad 6 can be adaptively adjusted according to the outer diameter of the shaft-type center 4 or the flange 5 to be replaced.

[0039] When a production change is required, it is only necessary to ensure that the internal shape of the mandrel support pad 6 matches the second transmission section 102 and the third transmission section 103; the inner diameter of the shaft tip 4 or the flange 5 matches the first transmission section 101. By correspondingly replacing the mandrel support pad 6 with different specifications according to different specifications of the shaft tip 4 or the flange 5, rapid and non-destructive production change can be achieved, thus ensuring stable and uniform quenching quality.

[0040] As a preferred solution, two rotating bearings 3 are coaxially arranged on the mandrel base;

[0041] The installation area of the mandrel body 1 is jointly connected with the two rotating bearings 3 to strengthen the installation strength of the mandrel body 1.

[0042] As a preferred solution, the rotating bearing 3 is a 6205 bearing.

[0043] The 6205 bearing is a single-row deep groove ball bearing with strong versatility and very low friction. After optimization, it can reduce noise and vibration, thereby increasing the rotational speed. It can withstand radial loads and bidirectional axial loads, is easy to install, and requires much less maintenance than many other bearing types.

Claims

1. A quick-switching spindle, comprising a spindle base arranged on a machine tool base, characterized in that: Also includes a cylindrical mandrel base (1); The front part of the mandrel base (1) is a transmission area, and the rear part is a mounting area; a raised limiting ring (2) is arranged in the middle part of the mandrel base (1); At least one rotating bearing (3) is arranged on the spindle base; the mounting area of ​​the spindle base (1) is fixed and coaxially penetrates into the rotating bearing (3); The transmission area of ​​the mandrel base (1) can be coaxially and fixedly connected to a shaft tip (4) or a flange (5).

2. The fast switching spindle according to claim 1, characterized in that: Also includes a mandrel support pad (6); The transmission area of ​​the mandrel base (1) is a stepped structure with three sections whose radius increases successively from front to back, including a first transmission section (101), a second transmission section (102) and a third transmission section (103); The spindle support pad (6) is fixedly mounted on the second transmission section (102) and the third transmission section (103); The shaft tip (4) or flange (5) can be fixedly connected to the first transmission section (101).

3. The fast switching spindle according to claim 1, characterized in that: Two rotating bearings (3) are coaxially arranged on the mandrel base; The mounting area of ​​the spindle base (1) is connected to the two rotary bearings (3).

4. The fast switching spindle according to claim 1, characterized in that: The rotating bearing (3) is a 6205 bearing.

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