CN218015866U

CN218015866U - Contraction reducing clamp

Info

Publication number: CN218015866U
Application number: CN202222229351.2U
Authority: CN
Inventors: 赵明; 彭右强; 宁国敏
Original assignee: Chengdu Ruixue Fengtai Precision Electronics Co ltd
Current assignee: Chengdu Ruixue Fengtai Precision Electronics Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-12-13
Anticipated expiration: 2032-08-24

Abstract

The utility model discloses a contraction reducing clamp, which comprises a fixed outer sleeve and a contraction radial sleeve, wherein the fixed outer sleeve is fixedly connected with a main shaft and is internally provided with an inner contraction diameter conical surface; a clamping area with a variable diameter is formed in the shrinkage radial sleeve. The utility model has reasonable design and simple structure, and is used for clamping and lengthening large thin-wall workpieces so as to facilitate the processing of the workpieces through a numerical control lathe; the shrinkage radial sleeve is reasonably designed to complete the installation of the workpiece, and the inner diameter of the shrinkage radial sleeve is changed by utilizing the attachment of the two conical surfaces, so that the workpiece is clamped, the clamping is stable and reliable, the workpiece is not easy to deform, and the acceptance is uniform.

Description

Contraction reducing clamp

Technical Field

The utility model relates to a machining field specifically says to a shrink reducing anchor clamps.

Background

The machining process of the lengthened large thin-wall product is complex and long in machining period, clamping is complex, machining quality is unstable, deformation is large when the lengthened large thin-wall product is machined by multiple devices and multiple operators in the early stage, and the machining device of the lengthened thin-wall product generally adopts a book numerical control lathe for machining.

In the process of numerical control machining, a tool clamp is required for clamping, the tool clamp of the numerical control lathe is required to meet the positioning stability and reliability of a workpiece in the machining and using process, the simple and quick operation in the clamping process is met, and the repeated positioning stability of the clamp in the clamping, dismounting and replacing processes is met; the method has the obvious characteristics of fast product transformation and short development period. And any mechanical processing can not leave the clamp. The special fixture is one of essential technical equipment which ensures the machining quality, improves the production efficiency, lightens the labor intensity, reduces the over-high requirement on the technology of workers and realizes the automation of the production process, and the fixture is an important link which directly influences the quality of products and the length of the production period. The complex structure is avoided, the cost is high, the manual operation is complied with, and the hydraulic pressure is in turn preferred to select the principle.

The existing numerical control lathe fixture is generally a three-jaw chuck, and the three-jaw chuck has complex operation, and is not accurate in positioning and using and single in clamping function for product clamping.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above-mentioned deficiency, the utility model provides a reasonable in design, simple in structure for the anchor clamps of clamping extension large-scale thin wall work piece, so that the processing to the work piece through the numerical control lathe; the shrinkage radial sleeve is reasonably designed to complete the installation of the workpiece, and the inner diameter of the shrinkage radial sleeve is changed by utilizing the attachment of the two conical surfaces, so that the workpiece is clamped, the clamping is stable and reliable, the workpiece is not easy to deform, and the acceptance is uniform.

The utility model is realized by constructing a contraction reducing clamp which comprises a fixed outer sleeve and a contraction radial sleeve,

the fixed outer sleeve is fixedly connected with the main shaft and is internally provided with an inner reducing conical surface,

the shrinkage radial sleeve is arranged in the fixed outer sleeve and is hydraulically connected with the working movable sleeve, and the outer end of the shrinkage radial sleeve is provided with an outer shrinkage conical surface matched with the inner shrinkage conical surface;

a clamping area with a variable diameter is formed in the shrinkage radial sleeve.

Furthermore, the connecting end of the fixed outer sleeve is provided with a connecting ring, and the connecting ring is respectively connected with the machine tool spindle and the fixed outer sleeve through a pin and a bolt. The mode makes the installation and the dismantlement of fixed overcoat more convenient.

Furthermore, the shrinkage radial sleeve is provided with a plurality of axial reducing seams, the shrinkage radial sleeve can be retracted inwards or the deformation performance can be better recovered by utilizing the reducing seams, and the shrinkage radial sleeve can be prevented from being damaged due to extrusion.

Furthermore, a connecting part is fixedly arranged at the connecting end of the contraction radial sleeve, and an internal thread hydraulically connected with the working movable part is arranged on the connecting part.

The utility model has the advantages of as follows:

the utility model has reasonable design and simple structure, and can clamp the lengthened large thin-wall workpiece so as to facilitate the processing of the workpiece by a numerical control lathe; the shrinkage radial sleeve is reasonably designed to complete the installation of the workpiece, and the inner diameter of the shrinkage radial sleeve is changed by utilizing the attachment of the two conical surfaces, so that the workpiece is clamped, the clamping is stable and reliable, the workpiece is not easy to deform, and the acceptance is uniform.

The two conical surfaces are reasonably attached, so that the installation accuracy of the shrinkage radial sleeve and the fixed outer sleeve can be improved, the coaxiality of the installation mode is better, and the machining quality is more stable and reliable.

Compared with the traditional three-jaw chuck, the clamping device is more stable and reliable in clamping after being improved, and the stress of a product is more uniform, so that the clamping precision is improved, and the lengthened large thin-wall workpiece is ensured not to deform; the device can also protect products from radial movement when rotating at high speed, avoid unstable product clamping and influencing unstable product quality, solve the problems of serious product scrapping or pulling crack of the three-jaw chuck base, protect the precision of the main shaft, prevent the collision of the main shaft and the cutter tower caused by unstable clamping in the processing process, protect the safety of personnel and equipment and prevent safety accidents.

Drawings

FIG. 1 is a schematic view of the present invention in an unsealed condition;

fig. 2 is a schematic perspective view of the shrinkable radial sleeve of the present invention;

fig. 3 is a schematic diagram of a test of the shrink radial sleeve of the present invention;

FIG. 4 isbase:Sub>A schematic cross-sectional view A-A of FIG. 3;

fig. 5 is a schematic perspective view of the fixing cover of the present invention;

fig. 6 is a perspective view of another perspective of the fixing cover of the present invention;

fig. 7 is a side view of the fixing sleeve of the present invention;

FIG. 8 is a cross-sectional view B-B of FIG. 7;

in the figure: 201. fixing the outer sleeve; 2011. an inner reducing conical surface; 2012. a connecting ring; 202. contracting the radial sleeve; 2021. an outer diameter-reducing conical surface; 2022. a connecting portion; 2023. an internal thread; 300. and (5) a workpiece.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1-8, wherein the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a contraction reducing clamp through improvement, which comprises a fixed outer sleeve 201 and a contraction radial sleeve 202,

the fixed outer sleeve 201 is fixedly connected with the main shaft and is internally provided with an inner reducing conical surface 2011,

the contraction radial sleeve 202 is arranged in the fixed outer sleeve and is hydraulically connected with the working movable sleeve, and the outer end of the contraction radial sleeve 202 is provided with an outer diameter reducing conical surface 2021 matched with the inner diameter reducing conical surface 2011;

a clamping zone of variable diameter is formed within the converging radial sleeve 202.

In this embodiment, the connection end of the fixing sleeve 201 has a connection ring 2012, and the connection ring 2012 is connected to the machine spindle and the fixing sleeve 201 through a pin and a bolt.

In this embodiment, the shrink sleeve 202 is provided with a plurality of axial reducing slits 2024.

In this embodiment, a connecting portion 2022 is fixedly disposed at the connecting end of the contracting radial sleeve 202, and an internal thread 2023 hydraulically connected to the working mechanism is disposed at the connecting portion 2022.

The utility model discloses when using, will fix overcoat 201 and pass through bolt and locating pin fixed mounting in the terminal surface of main shaft, again with shrink radial sleeve 202 install in to be connected with work activity hydraulic pressure, place work piece 300 in shrink radial sleeve 202 again, remove about the rethread main shaft, drive shrink radial sleeve 202 and fixed overcoat 201 and have relative movement, thereby under the cooperation of including the reducing conical surface 2011 and the outer reducing conical surface 2021, change the internal diameter of shrink radial sleeve 202, thereby accomplish the clamping of work piece 300, so that the staff passes through the processing of numerical control lathe to the work piece.

The utility model discloses a improve the back, compare in traditional three-jaw chuck clamping reliable and stable more to the product atress is more even, has improved the precision of clamping, guarantees that the large-scale thin wall work piece of extension can not warp.

The utility model discloses it is simple firm to the work piece clamping, the steady quality, it is little to warp, manufacturing procedure shortens, production efficiency is fast, and anchor clamps are dismantled at the clamping, change in-process repeated location and reach within 0.02 reduction equipment and operating personnel accelerate manufacturing cycle.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a shrink reducing anchor clamps which characterized in that: comprises a fixed outer sleeve (201) and a contraction radial sleeve (202),

the fixed outer sleeve (201) is fixedly connected with the main shaft and is internally provided with an inner reducing conical surface (2011),

the contraction radial sleeve (202) is arranged in the fixed outer sleeve and is hydraulically connected with the working movable sleeve, and the outer end of the contraction radial sleeve (202) is provided with an outer reducing conical surface (2021) matched with the inner reducing conical surface (2011);

a clamping area with a variable diameter is formed in the shrinkage radial sleeve (202).

2. The reducing clamp according to claim 1, wherein: the connecting end of the fixed outer sleeve (201) is provided with a connecting ring (2012), and the connecting ring (2012) is respectively connected with the machine tool main shaft and the fixed outer sleeve (201) through a pin and a bolt.

3. The reducing clamp according to claim 1, wherein: the shrinkage radial sleeve (202) is provided with a plurality of axial variable-diameter seams (2024).

4. The reducing clamp according to claim 3, wherein: the connecting end of the contraction radial sleeve (202) is fixedly provided with a connecting part (2022), and the connecting part (2022) is provided with an internal thread (2023) hydraulically connected with the working movement.