CN107498076A - A kind of clamping device for Vehicle Processing thin-wall pipe - Google Patents

Abstract

The invention discloses a clamping fixture for turning thin-walled pipe fittings, which comprises a hollow fixed shaft and at least two sets of support assemblies, each support assembly is uniformly arranged along the axial direction of the fixed shaft, and the support assembly includes a plurality of The supporting rods are evenly arranged in the circumferential direction of the shaft, the supporting rods penetrate the fixed shaft in the radial direction, and are threadedly connected with the fixed shaft, and the ends of the supporting rods protruding from the fixed shaft are provided with supporting pieces. The positioning of the present invention is stable and reliable, and the protruding length of the support rod can be adjusted, which is suitable for thin-walled pipes with small diameters, especially for clamping thin-walled pipes with large diameters; it can also be used for small axial lengths The thin-walled pipe fittings can also be applied to thin-walled pipe fittings with a large axial length. It has the characteristics of simple structure, convenient use, good clamping effect and good versatility.

Description

A clamping fixture for turning thin-walled pipe fittings

technical field

The invention relates to the processing of thin-walled pipe fittings, in particular to a clamping fixture for turning thin-walled pipe fittings.

Background technique

When lathes process thin-walled pipe parts (referred to as thin-walled pipes), sometimes they cannot be clamped firmly due to the limitation of the size of the jaws. At the same time, for thin-walled pipe parts, the parts are easily deformed during clamping. Moreover, during the high-speed rotating cutting process, the parts are prone to bending deformation and shaking, which is not conducive to ensuring the machining accuracy. Even for long thin-walled pipe parts, due to the severe shaking, it cannot be processed.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a clamping fixture for turning thin-walled pipe fittings with simple structure, convenient use, good clamping effect and good versatility.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A clamping fixture for turning thin-walled pipes, comprising a hollow fixed shaft and at least two sets of support assemblies, each support assembly is uniformly arranged along the axial direction of the fixed shaft, and the support assembly includes a plurality of Arranged support rods, the support rods penetrate the fixed shaft in the radial direction, and are threadedly connected with the fixed shaft, and the ends of the support rods protruding from the fixed shaft are provided with support members.

As a further improvement of the above technical solution:

The part of the support rod protruding from the fixed shaft is also provided with a lock nut, and the lock nut is arranged close to the outer wall of the fixed shaft.

The support rod is provided with a rotating nut between the support member and the locking nut.

A plurality of support rods in each set of support assemblies are located in the same radial plane.

The support member and the support rod are connected by threads.

The supporting member has a circular arc surface that can cooperate with the inner wall of the thin-walled pipe.

The support member is non-metallic wear block.

The supports are balls or bearings.

Compared with the prior art, the present invention has the advantages of:

The clamping fixture for turning thin-walled pipe fittings of the present invention is used to fix thin-walled pipe fittings through a plurality of support rods that can radially extend in and out on the fixed shaft. The positioning is stable and reliable, and the length of the support rods protruding Adjustable, it is suitable for thin-walled pipe fittings with small diameters, especially for the clamping of thin-walled pipes with large diameters; evenly setting multiple sets of support components is beneficial to ensure the firm positioning of thin-walled pipe fittings and prevent thin-walled pipe fittings from Shaking, springback and deformation during the cutting process, and it can be applied to both thin-walled pipe fittings with small axial length and thin-walled pipe fittings with large axial length. The fixture has a simple structure and is easy to use , Good clamping effect and good versatility.

Description of drawings

Fig. 1 is a schematic diagram of the working process of the clamping fixture used for turning thin-walled pipe fittings according to the present invention.

Fig. 2 is a structural schematic diagram of the support assembly in the present invention.

Each label in the figure means:

1. Fixed shaft; 2. Support assembly; 21. Support rod; 22. Support member; 23. Lock nut; 24. Rotating nut; 3. Thin-walled pipe fittings;

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, the clamping fixture for turning thin-walled pipes in this embodiment includes a hollow fixed shaft 1 and at least two sets of support assemblies 2, and the support assembly 2 includes a plurality of The supporting rods 21 are evenly arranged, and the supporting rods 21 penetrate the fixed shaft 1 in the radial direction and are screwed with the fixed shaft 1 . One end of the support rod 21 is located outside the fixed shaft 1 , and the other end is located inside the fixed shaft 1 , and by rotating the support rod 21 , the length of the end of the support rod 21 located outside the fixed shaft 1 can be adjusted.

In a specific application example, the number of sets of support assemblies 2 and the number of support rods 21 in each set of support assemblies 2 are set according to the length and diameter of the thin-walled pipe 3 . In this embodiment, the support assemblies 2 are arranged in three groups, uniformly arranged along the axial direction of the fixed shaft 1, and each group is provided with six support rods 21 .

When in use, the support member 22 is fixed on the end of the support rod 21, and then the support rod 21 is inserted into the threaded hole (not shown in the figure) on the fixed shaft 1, rotated and installed, and adjusted according to the diameter of the thin-walled pipe 3 The position of the supporting rod 21 is slightly smaller than the diameter of the thin-walled pipe fitting 3. After all the supporting rods 21 are installed, the thin-walled pipe fitting 3 is placed outside the supporting rod 21. At this time, the thin-walled pipe fitting 3 is supported on the supporting member 22 , and then rotate the support rod 21 with a wrench, so that the support rod 21 protrudes outward, so as to ensure that the support member 22 withstands the inner wall of the thin-walled pipe 3 . When all the support rods 21 are operated in sequence, it is ensured that each support member 22 bears against the inner wall of the thin-walled pipe 3 .

The clamping fixture for turning thin-walled pipe fittings of the present invention is used to fix the thin-walled pipe fittings 3 through a plurality of support rods 21 that can radially extend in and out on the fixed shaft 1, and the positioning is stable and reliable. The support rods 21 The protruding length can be adjusted, which is suitable for thin-walled pipe fittings 3 with smaller diameters, and especially suitable for clamping thin-walled pipe fittings 3 with larger diameters. Evenly arranging multiple sets of support components 2 is beneficial to ensure the firm positioning of the thin-walled pipe fittings 3 and prevent the thin-walled pipe fittings 3 from shaking, rebounding and deformation during the cutting process. The wall pipe fitting 3 can also be applied to the thin-wall pipe fitting 3 with a large axial length. The fixture has the characteristics of simple structure, convenient use, good clamping effect and good versatility.

In this embodiment, the part of the support rod 21 protruding from the fixed shaft 1 is also provided with a lock nut 23. The lock nut 23 is arranged close to the outer wall of the fixed shaft 1. The lock nut 23 is used to prevent the support rod 21 from being damaged after being adjusted in place. Force damages thread, fixes support bar 21 simultaneously.

In this embodiment, the support rod 21 is provided with a rotating nut 24 between the support member 22 and the locking nut 23 . The rotating nut 24 cooperates with the wrench to facilitate the rotation of the support rod 21 .

In this embodiment, the plurality of support rods 21 in each set of support assemblies 2 are located in the same radial plane, ensuring reliable positioning and uniform force.

In this embodiment, the support member 22 and the support rod 21 are connected through threads, and the detachable connection between the support member 22 and the support rod 21 is realized through threads, and the support member 22 can be replaced according to requirements or when the support member 22 is damaged. The supporting member 22 has an arc supporting surface that can cooperate with the inner wall of the thin-walled pipe fitting 3, so as to ensure that the contact surface between the two when the supporting member 22 presses against the thin-walled pipe fitting 3 is completely fitted, ensuring stable positioning and uniform force. Except for this embodiment, the supporting member 22 and the thin-walled pipe 3 can also be fitted in point contact.

In this embodiment, the support member 22 is not a metal wear-resistant block. Except for this embodiment, the supporting member 22 can be a ball or a bearing.

working principle:

First, clamp one end along the fixed axis 1 on the lathe to ensure that the first group of support components 2 has a certain distance from the three claws 4 of the lathe to facilitate the adjustment of the support rod 21, and at the same time determine the radial direction of the fixed axis 1 according to the length of the thin-walled pipe 3 Set the number of support rods 21 and install the support rods 21 and support members 22. To ensure that the number of groups of support rods 21 is evenly distributed, then roughly adjust the amount of each support rod 21 protruding from the fixed shaft 1 according to the inner diameter of the thin-walled pipe 3. length, so that the diameter of the circumference formed by each group of support members 22 is slightly smaller than the inner diameter of the thin-walled pipe fitting 3, then the thin-walled pipe fitting 3 is loaded on the fixed shaft 1 along the radial direction of the fixed shaft 1, and tightened with the lathe tailstock 5 Fixed axis 1. Finally, by using a torque wrench to adjust the length of all the support rods 21 protruding from the fixed shaft 1, the arc support surface of the support member 22 is close to (tightened) the inner wall of the thin-walled pipe 3 to ensure that the thin-walled pipe 3 is securely clamped.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent implementation of equivalent changes example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims (8)

1. A kind of 1. clamping device for Vehicle Processing thin-wall pipe, it is characterised in that：Including hollow fixing axle（1）At least two Group support component（2）, each support component（2）Along fixing axle（1）Axially it is evenly arranged, the support component（2）Including multiple edges Fixing axle（1）The support bar being arranged circumferentially（21）, the support bar（21）Extend radially through in fixing axle（1）On, and with Fixing axle（1）Threaded connection, the support bar（21）Stretch out fixing axle（1）Outer end is provided with support member（22）.
2. 2. the clamping device according to claim 1 for Vehicle Processing thin-wall pipe, it is characterised in that：The support bar （21）Stretch out fixing axle（1）Outer part is additionally provided with locking nut（23）, the locking nut（23）Close to fixing axle（1）It is outer Wall is set.
3. 3. the clamping device according to claim 2 for Vehicle Processing thin-wall pipe, it is characterised in that：The support bar （21）In support member（22）With locking nut（23）Between be provided with rotating nuts（24）.
4. 4. the clamping device for Vehicle Processing thin-wall pipe according to claims 1 to 3 any one, it is characterised in that： Every group of support component（2）In multiple support bars（21）In same sagittal plane.
5. 5. the clamping device for Vehicle Processing thin-wall pipe according to claims 1 to 3 any one, it is characterised in that： The support member（22）With support bar（21）Between be connected through a screw thread.
6. 6. the clamping device for Vehicle Processing thin-wall pipe according to claims 1 to 3 any one, it is characterised in that： The support member（22）With can be with thin-wall pipe（3）The arc surface that inwall coordinates.
7. 7. the clamping device for Vehicle Processing thin-wall pipe according to claims 1 to 3 any one, it is characterised in that： The support member（22）Nonmetallic wear-resistant block.
8. 8. the clamping device for Vehicle Processing thin-wall pipe according to claims 1 to 3 any one, it is characterised in that： The support member（22）For ball or bearing.