CN220278465U

CN220278465U - Spring inner chamfering mechanism

Info

Publication number: CN220278465U
Application number: CN202321303909.5U
Authority: CN
Inventors: 倪三宏; 贺寿奎
Original assignee: Guangzhou Auto Spring Co ltd
Current assignee: Guangzhou Auto Spring Co ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2024-01-02
Anticipated expiration: 2033-05-26

Abstract

The utility model relates to the technical field of machining devices, in particular to a spring inner chamfering mechanism; the spring workpiece chamfering device is reasonable in structure, the end face of the spring workpiece is pressed by the sleeve to be contracted to the limit position, the spring workpiece is chamfered by the cutter blade through synchronous feeding of the cutter bar, the unstable cutting tool feeding condition caused by the contraction quantity of the spring workpiece is avoided, the machining efficiency is improved, and meanwhile, the chamfering consistency is ensured; the spring workpiece inner chamfering device is reasonable in structure, the end face of the spring workpiece is pressed by the sleeve to be contracted to the limit position, the inner chamfering processing is carried out on the spring workpiece by the cutter blade in a synchronous feeding mode, the unstable cutting tool feeding condition caused by the contraction quantity of the spring workpiece is avoided, the processing efficiency is improved, and meanwhile the consistency of the processing effect is ensured.

Description

Spring inner chamfering mechanism

Technical Field

The utility model relates to the technical field of machining devices, in particular to a spring inner chamfering mechanism.

Background

The springs are usually formed by bending round or square wires, and the formed springs are required to be subjected to quenching and tempering processes to improve structural performance. Because the wire itself has shape and position characteristics, the springs bent into a spiral shape need to be subjected to flat-end processing at two ends, and then a grinding process is usually adopted for processing. The process requirements for the springs in partial application scenes are higher, for example, burrs exist at the inner edge and the outer edge of the end face of the springs after the springs made of square wires are ground and flat-headed, and chamfering is needed.

The utility model discloses a device for deburring and chamfering ends of rotary springs, which comprises a frame body, a table plate, a slide bar, a slide block, a V-shaped block, a slide bar support, a protection plate, a chamfering device, a limiting support plate, a limiting bolt, a slide plate support, a dial, an angle dial, a motor, a rotary disk, a controller, a lifting block, a screw and a protecting cover.

The structure of current device is too complicated, and because there is the retractility in the spring, and chamfer processing has difficulty to the centre gripping of spring, needs the shrinkage volume of control spring and the feed force of cutter, and to the less spring of elasticity, chamfer processing is more difficult, and current processing technology leads to production efficiency lower, and the technology uniformity of chamfer processing is relatively poor. Therefore, the prior art needs to be improved and developed, and it is necessary to provide a spring inner chamfering mechanism with reasonable structure and high processing efficiency to overcome the defects of the prior art.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings of the prior art and provide the spring inner chamfering mechanism which is reasonable in structure and high in machining efficiency.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model relates to a spring inner chamfering mechanism which comprises a spring workpiece, a centering fixture, a cutter bar and a sleeve, wherein the cutter bar is rotatably arranged in the sleeve in a penetrating manner; the sleeve can move along the feeding direction F and props against the processed end face of the spring workpiece, and a blade is arranged at one end of the cutter bar opposite to the processed end face of the spring workpiece.

According to the scheme, the sleeve and the cutter bar are integrally linked along the feeding direction F.

According to the scheme, the sleeve is fixedly arranged on the feed device of the processing equipment, a bearing connector is arranged between the cutter bar and the sleeve, and the other end of the cutter bar is in transmission connection with the output head of the processing equipment.

According to the scheme, the sleeve is connected with the centering clamp in a matched mode, the other end of the cutter bar is fixedly connected with the output head of the processing equipment, and a travel limiting device is arranged between the cutter bar and the sleeve or the centering clamp.

According to the scheme, the centering fixture is fixedly arranged on the processing equipment, the centering fixture is provided with the clamping opening capable of being opened and closed, and the spring workpiece is fixed on the clamping opening.

According to the scheme, a group of sleeves and cutter bars are arranged on two sides of the centering clamp, and the two groups of sleeves respectively abut against two machined end faces of the connecting spring workpiece.

According to the scheme, the diameter of the inner edge of the sleeve is D, the diameter of the outer edge of the spring workpiece is L, and the diameter of the inner edge of the spring workpiece is S, and D is greater than L and greater than S.

The utility model has the beneficial effects that: the spring workpiece inner chamfering device is reasonable in structure, the end face of the spring workpiece is pressed by the sleeve to be contracted to the limit position, the inner chamfering processing is carried out on the spring workpiece by the cutter blade in a synchronous feeding mode, the unstable cutting tool feeding condition caused by the contraction quantity of the spring workpiece is avoided, the processing efficiency is improved, and meanwhile the consistency of the processing effect is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the fit of the sleeve, guide rod and spring workpiece of the present utility model.

In the figure:

1. a spring work piece; 2. centering fixture; 3. a cutter bar; 4. a sleeve; 21. clamping ports; 31. a blade.

Detailed Description

The technical scheme of the utility model is described below with reference to the accompanying drawings and examples.

As shown in fig. 1-2, the spring inner chamfering mechanism comprises a spring workpiece 1, a centering fixture 2, a cutter bar 3 and a sleeve 4, wherein the cutter bar 3 is rotatably arranged in the sleeve 4 in a penetrating manner, the spring workpiece 1 is fixed on the centering fixture 2, and the spring workpiece 1, the sleeve 4 and the cutter bar 3 are concentrically arranged along the feeding direction F of the cutter bar 3; the sleeve 4 can move along the feeding direction F and abuts against the processed end surface of the spring workpiece 1, and a blade 31 is arranged at one end of the cutter bar 3 opposite to the processed end surface of the spring workpiece 1. The spring workpiece 1 has the characteristics of shrinkage and rebound, and the spring workpiece 1 has a conventional spiral structure, and is based on mechanical processing equipment with rotary power output such as a common lathe, a drilling machine, a milling machine and the like. For example, the tool bar 3 may be rotated by a chuck of a lathe, and the tool bar 3 and the insert 31 thereon are cutting tools for machining an inner edge of the end surface of the spring workpiece 1, i.e., inner chamfering.

The spring workpiece 1 is fixed by the centering fixture 2, the centering fixture 2 is fixedly arranged on processing equipment, the centering fixture 2 is provided with a clamping opening 21 which can be opened and closed, the spring workpiece 1 is fixed on the clamping opening 21, namely, the centering fixture 2 fixes the spring workpiece 1 on the processing equipment in a clamping manner, the spring workpiece 1 and the sleeve 4 are concentrically arranged, and the centering fixture 2 is used for clamping and disassembling the spring workpiece 1.

The sleeve 4 and the cutter bar 3 are integrally linked along the feeding direction F. In the present utility model, the sleeve 4 can reciprocate only in the feed direction F, and the cutter bar 3 rotates around the feed direction F and reciprocates in the feed direction F. Based on this, the sleeve 4 and the cutter bar 3 may be connected through a bearing connector, and of course, the sleeve 4 and the cutter bar 3 may be set independently, the cutter bar 3 may be inserted into the sleeve 4, and the inner chamfer may be machined by matching movement.

During the machining process, the sleeve 4 abuts against the machined end face of the spring workpiece 1, the cutting edge of the blade 31 simultaneously contacts the inner edge of the port of the spring workpiece 1, and the sleeve 4 and the cutter bar 3 simultaneously move along the feeding direction F, so that the machined end of the spring workpiece 1 is compressed by the sleeve 4 until the shrinkage of the spring workpiece 1 is zero, at this time, the blade 31 completes cutting, and the difference between the feeding amount L1 of the cutter bar 3 and the feeding amount L2 of the sleeve 4, namely, the cutting amount of the blade 31.

In the above process, the core is that the sleeve 4 and the cutter bar 3 synchronously feed, and the sleeve 4 and the cutter bar 3 can be linked or respectively fed, but the feeding amount L1 of the cutter bar 3 is more than or equal to the feeding amount L2 of the sleeve 4. Further, the sleeve 4 limits the shrinkage of the spring workpiece 1, so that the spring workpiece 1 can be cut in an equal amount during the inner chamfering process, and the processing consistency is improved.

In actual production, the sleeves 4 can be installed on the centering fixture 2 through a guide rail mechanism, namely, the total length and the shrinkage of the spring workpiece 1 are fixed, after the spring workpiece 1 is clamped on the centering fixture 2, two sleeves 4 are respectively clamped at two ends of the spring workpiece 1, the sleeves 4 can move along the guide rail, and the feeding length L2 is a fixed value. The inner edge of the spring workpiece 1 can be chamfered by controlling only the feed amount L1 of the cutter bar 3.

The sleeve 4 is fixedly arranged on a feed device of processing equipment, a bearing connector is arranged between the cutter bar 3 and the sleeve 4, and the other end of the cutter bar 3 is in transmission connection with an output head of the processing equipment. When the feeding amount L1 of the cutter bar 3 is equal to the feeding amount L2 of the sleeve 4, that is, before the sleeve 4 abuts against the end face of the spring workpiece 1, the blade 31 contacts (bites) the inner edge of the end face of the spring workpiece 1, and the blade 31 cannot completely cut due to the retraction amount of the spring workpiece 1, only when the sleeve 4 completely abuts against the spring workpiece 1 to return the retraction amount to zero, the blade 31 simultaneously completes the inner chamfering processing of the spring workpiece 1.

If only one end of the spring workpiece 1 is processed, a positioning backup is arranged at the other end of the spring workpiece 1 before clamping, the spring workpiece 1 is fixed by the centering clamp 2, and the feeding mode of the sleeve 4 and the cutter bar 3 is the same as the above process and is not repeated here.

Especially, a group of sleeves 4 and cutter bars 3 are arranged on two sides of the centering clamp 2, the two groups of sleeves 4 respectively abut against and are connected with two machined end faces of the spring workpiece 1, and during machining, the two groups of sleeves 4 and cutter bars 3 simultaneously feed to carry out inner chamfering on the two end faces of the spring workpiece 1, so that machining efficiency is improved.

Further, the cutter bar 3 and the sleeve 4 are respectively and independently arranged, and there is no connection relation between the cutter bar and the sleeve, but there is action fit in the feeding direction F. Namely, the sleeve 4 is matched and connected with the centering clamp 2, the other end of the cutter bar 3 is fixedly connected with an output head of the processing equipment, and a stroke limiting device is arranged between the cutter bar 3 and the sleeve 4 or the centering clamp 2. The cutter bar 3 can push the sleeve 4 in the feeding process, so that the sleeve 4 moves on the track along the feeding direction F, and the blade 31 and the sleeve 4 simultaneously contact the processed end face of the spring workpiece 1.

The diameter of the inner edge of the sleeve 4 is D, the diameter of the outer edge of the spring workpiece 1 is L, and the diameter of the inner edge of the spring workpiece 1 is S, and D > L > S.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims

1. The utility model provides a chamfer mechanism in spring, includes spring work piece (1), centering fixture (2), cutter arbor (3) and sleeve (4), its characterized in that: the cutter bar (3) is rotatably arranged in the sleeve (4) in a penetrating manner, the spring workpiece (1) is fixed on the centering fixture (2), and the spring workpiece (1), the sleeve (4) and the cutter bar (3) are concentrically arranged along the feeding direction F of the cutter bar (3); the sleeve (4) can move along the feeding direction F and props against the processed end face of the spring workpiece (1), and a blade (31) is arranged at one end of the cutter bar (3) opposite to the processed end face of the spring workpiece (1).

2. The spring inner chamfer mechanism according to claim 1, wherein: the sleeve (4) and the cutter bar (3) are integrally linked along the feeding direction F.

3. The spring inner chamfer mechanism according to claim 2, wherein: the sleeve (4) is fixedly arranged on a feed device of processing equipment, a bearing connector is arranged between the cutter bar (3) and the sleeve (4), and the other end of the cutter bar (3) is in transmission connection with an output head of the processing equipment.

4. The spring inner chamfer mechanism according to claim 2, wherein: the sleeve (4) is connected with the centering fixture (2) in a matched mode, the other end of the cutter bar (3) is fixedly connected with an output head of the processing equipment, and a travel limiting device is arranged between the cutter bar (3) and the sleeve (4) or the centering fixture (2).

5. The spring inner chamfer mechanism according to claim 1, wherein: the centering fixture (2) is fixedly arranged on processing equipment, the centering fixture (2) is provided with a clamping opening (21) which can be opened and closed, and the spring workpiece (1) is fixed on the clamping opening (21).

6. The spring inner chamfer mechanism according to any one of claims 1-5, wherein: and a group of sleeves (4) and cutter bars (3) are arranged on two sides of the centering fixture (2), and the two groups of sleeves (4) respectively abut against two processed end surfaces of the connecting spring workpiece (1).

7. The spring inner chamfer mechanism according to claim 1, wherein: the diameter of the inner edge of the sleeve (4) is D, the diameter of the outer edge of the spring workpiece (1) is L, and the diameter of the inner edge of the spring workpiece (1) is S, and D is greater than L and is greater than S.