Multifunctional mandrel clamp for fixing shaft parts

Abstract

The utility model provides a multifunctional mandrel clamp for fixing shaft parts, and belongs to the technical field of machinery. The multifunctional mandrel clamp comprises a mandrel clamp main body and a large-diameter transition section; the rear end of the mandrel clamp main body is coaxially and integrally connected with the large-diameter transition section; a center hole is formed in the center of the mandrel clamp body, a plurality of through grooves are evenly distributed in the circumference of the mandrel clamp body, and the outer surface of the mandrel clamp body is of a step face structure. The mandrel clamp with the through groove is used, the shaft part is sleeved on the mandrel clamp, the end face of the mandrel clamp is supported through the center of a machine tool, the shaft part is fixedly connected with the mandrel clamp, the outer surface of the part does not need to be clamped in the machining process, deformation is not prone to occurring in the machining process, and machining efficiency is improved. The problems that the outer surface of a shaft part with a hole cannot be clamped in the machining process, an inner hole of the part is prone to being scratched during clamping, clamping and dismounting are difficult, and the shaft part is prone to becoming worse are solved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology, specifically relating to a multifunctional mandrel clamp for fixing shaft parts, which is suitable for processing various shaft parts with holes. Background Technology

[0002] With the development of technology, the processing capabilities of equipment are becoming increasingly powerful, and the precision of parts processing is becoming increasingly higher. For some shaft-like parts with holes, the outer surface cannot be clamped during processing; processing can only be done by fixing the inner hole. The traditional method involves creating a mandrel fixture with a slight interference fit between the outer diameter of the mandrel fixture and the inner hole of the shaft-like part. The friction between the outer diameter of the mandrel fixture and the inner hole of the shaft-like part is used to fix the mandrel and the shaft-like part together. This processing method easily scratches the inner hole of the part, and the shaft-like parts are difficult to disassemble and assemble, easily leading to deformation. To ensure the processing accuracy of shaft-like parts and simplify the processing, this solution proposes a multi-functional mandrel fixture. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a multifunctional mandrel clamp for fixing shaft parts, which aims to solve the problems that the outer surface of some shaft parts with holes cannot be clamped during the processing, and the inner hole of the part is easily scratched when clamped, and the clamping and disassembly are difficult and easily lead to deformation of the shaft parts.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A multi-functional mandrel clamp for fixing shaft parts, the multi-functional mandrel clamp includes a mandrel clamp body and a large-diameter transition section, the rear end of the mandrel clamp body and the large-diameter transition section are coaxially and integrally connected;

[0006] The mandrel clamp body has a central hole at its center, and multiple through slots are evenly distributed around its circumference. The outer surface of the mandrel clamp body has a stepped surface structure.

[0007] Further defining the above scheme, the axial ends of the through groove extend to the two end faces of the mandrel clamp body, and the radial sides of the through groove extend to the outer surface of the mandrel clamp body and the inner surface of the central hole, respectively.

[0008] As a further limitation of the above scheme, the through slot is provided with 4 slots.

[0009] Further defining the above scheme, the outer surface of the mandrel clamp body is a stepped surface structure composed of a small-diameter outer circular surface and a large-diameter outer circular surface.

[0010] As a further limitation of the above scheme, the outer circular shape and size of the mandrel fixture body are determined according to the inner hole shape and size of the shaft part.

[0011] As a further limitation of the above scheme, the rear end of the large-diameter transition section is coaxially connected to a spindle connection end for connection with a machine tool.

[0012] As a further specification of the above scheme, the multifunctional mandrel clamp is made entirely of aluminum alloy.

[0013] Advantages of this utility model compared to the prior art:

[0014] 1. This solution utilizes a mandrel fixture with an open slot to fit the shaft-like parts onto the mandrel fixture. The end face of the mandrel fixture is opened by the machine tool center, thus fixing the shaft-like parts and the mandrel fixture together. During the machining process, there is no need to clamp the outer surface of the parts, and the parts are less prone to deformation during machining. This solution solves the problems of not being able to clamp the outer surface of shaft-like parts with holes during machining, the easy scratching of the inner hole of the parts during clamping, the difficulty of clamping and disassembling, and the easy deformation of the shaft-like parts.

[0015] 2. This solution makes the outer surface of the mandrel fixture body into a stepped surface structure to facilitate the clamping of shaft parts with different inner hole sizes and improve the functionality of the fixture;

[0016] 3. The multi-functional mandrel fixture in this solution has a simple structure and is easy to manufacture, which can greatly improve processing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0019] Figure 3 This is the front view of the present invention;

[0020] Figure 4 This is the left view of the present invention. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] Please see Figure 1-4 The embodiments of this utility model are described in detail below.

[0024] Example: A multi-functional mandrel clamp for fixing shaft-type parts, see reference. Figure 1-4 As shown, the multifunctional mandrel clamp 1 includes a mandrel clamp body 1-1 and a large-diameter transition section 1-2. The rear end of the mandrel clamp body 1-1 is coaxially and integrally connected with the large-diameter transition section 1-2. The mandrel clamp body 1-1 has a central hole 1-1-1 at its center. Multiple through slots 1-1-2 are evenly distributed around the circumference of the mandrel clamp body 1-1. The outer surface of the mandrel clamp body 1-1 has a stepped surface structure.

[0025] In one specific embodiment: the two ends of the through groove 1-1-2 extend axially to the two end faces of the mandrel clamp body 1-1, and the two sides of the through groove 1-1-2 extend radially to the outer surface of the mandrel clamp body 1-1 and the inner surface of the center hole 1-1-1, respectively.

[0026] Preferably, the through groove 1-1-2 has 4 grooves, such as... Figure 1 As shown.

[0027] In one specific embodiment: the outer surface of the mandrel clamp body 1-1 is a stepped surface structure composed of a small-diameter outer circular surface 1-1-3 and a large-diameter outer circular surface 1-1-4.

[0028] Preferably, the outer circular shape and size of the mandrel clamp body 1-1 are determined according to the inner hole shape and size of the shaft part.

[0029] In this embodiment, not only can two stepped surfaces with different diameters be made, but also three or four stepped surfaces can be made as needed, so as to clamp shaft parts with different inner hole sizes, thereby improving the functionality of the fixture.

[0030] In one specific embodiment: the rear end of the large-diameter transition section 1-2 is coaxially connected to a spindle connection end 1-3 for connection with a machine tool.

[0031] Preferably, the multifunctional mandrel clamp 1 is made entirely of aluminum alloy.

[0032] The usage method of this multi-functional mandrel clamp is as follows:

[0033] 1) Based on the inner hole size of shaft parts, make a mandrel fixture with a center hole 1-1-1 on the end face and a through groove 1-1-2 on the outer circle. The outer circle of the mandrel fixture body 1-1 is composed of a stepped shaft consisting of a small diameter outer circle surface 1-1-3 and a large diameter outer circle surface 1-1-4, which can clamp shaft parts with different inner hole sizes.

[0034] 2) Connect the other end of the multi-functional spindle fixture 1, the spindle connection end 1-3, to the lathe spindle.

[0035] 3) Place the shaft-type parts onto the mandrel body 1-1 of the multi-functional mandrel clamp 1, ensuring that the outer circle of the multi-functional mandrel clamp 1 and the inner hole of the shaft-type parts are in clearance fit;

[0036] 4) Place the lathe center against one end of the multi-functional mandrel fixture 1 to open the mandrel fixture while ensuring that the outer circle of the mandrel fixture and the inner hole of the shaft part are fixedly connected.

[0037] 5) After the shaft parts are machined, loosen the machine tool center and remove the shaft parts from the mandrel fixture.

[0038] This invention utilizes a slotted mandrel fixture. Shaft-type parts are fitted onto the mandrel fixture, and the machine tool center opens the end face of the mandrel fixture, thus fixing the shaft-type parts and the mandrel fixture together. During machining, there is no need to clamp the outer surface of the part, reducing the risk of deformation. This solves the problems of not being able to clamp the outer surface of shaft-type parts with holes during machining, easily scratching the inner hole during clamping, and difficulties in clamping and disassembling, which can easily lead to deformation of the shaft-type parts. This multifunctional mandrel fixture has a simple structure, is easy to manufacture, and can greatly improve machining efficiency.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multifunctional mandrel fixture for fixing shaft parts, characterized in that: The multifunctional spindle clamp (1) comprises a spindle clamp body (1-1) and a large-diameter transition section (1-2), the rear end of the spindle clamp body (1-1) is coaxially and integrally connected with the large-diameter transition section (1-2); The spindle clamp body (1-1) is provided with a central hole (1-1-1) in the center, a plurality of through grooves (1-1-2) are uniformly distributed on the circumference of the spindle clamp body (1-1), and the outer surface of the spindle clamp body (1-1) is a stepped surface structure.

2. The multifunctional spindle clamp for fixing shaft parts according to claim 1, characterized in that: The axial ends of the through grooves (1-1-2) respectively extend to the end faces of the spindle clamp body (1-1), and the radial sides of the through grooves (1-1-2) respectively extend to the outer surface of the spindle clamp body (1-1) and the inner surface of the central hole (1-1-1).

3. The multifunctional spindle clamp for fixing shaft parts according to claim 2, characterized in that: The through grooves (1-1-2) are provided with four through grooves.

4. The multifunctional spindle clamp for fixing shaft parts according to claim 1, characterized in that: The outer surface of the spindle clamp body (1-1) is a stepped surface structure composed of a small-diameter outer cylindrical surface (1-1-3) and a large-diameter outer cylindrical surface (1-1-4).

5. The multifunctional spindle clamp for fixing shaft parts according to claim 4, characterized in that: The shape and size of the outer circle of the spindle clamp body (1-1) are determined according to the shape and size of the inner hole of the shaft part.

6. The multifunctional spindle clamp for fixing shaft parts according to claim 1, characterized in that: The rear end of the large-diameter transition section (1-2) is coaxially connected with a spindle connecting end (1-3) for connecting with a machine tool.

7. The multifunctional spindle clamp for fixing shaft parts according to claim 1, characterized in that: The multifunctional spindle clamp (1) is made of aluminum alloy material.

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