CN104097078A

CN104097078A - End surface cutting clamp for workpiece and manufacturing method of end surface cutting clamp

Info

Publication number: CN104097078A
Application number: CN201410303167.5A
Authority: CN
Inventors: 高玉琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-30
Filing date: 2014-06-30
Publication date: 2014-10-15

Abstract

The invention relates to a clamp. The clamp comprises a disc (1) capable of being clamped by a chuck. The clamp is characterized in that a vertically outwards extending location core (2) is arranged at the circle center part of the disc; a vertical outwards extending driving rod (3) is arranged at the part deviated from the circle center of the disc; the location core is shaped like a Chinese character tu and comprises a table part (21) and a core part (22); the outer diameter of the core part is matched with the inner diameter of a workpiece hole; the length of the core part is slightly smaller than the length of the workpiece hole; the outer diameter of the table part is larger than the inner diameter of the workpiece hole; the driving rod can drive a workpiece to rotate; the workpiece is positioned by the core part of the clamp; the eccentric part of the workpiece is abutted against the driving rod of the clamp so as to drive the workpiece to rotate and finish end surface cutting; the assembly and disassembly operation of the workpiece on the clamp is that the workpiece sleeves and is pulled out from the core part, the assembly and disassembly time is greatly shortened compared with the time of the operation that the workpiece is clamped and loosened on the clamp, body strength consumption of a worker is greatly reduced and the production efficiency is obviously improved.

Description

Facing fixture of a kind of workpiece and preparation method thereof

Technical field

The present invention relates to a kind of fixture, be difficult to the end face with the workpiece of scroll chuck clamping for cutting on lathe.

Background technology

For regular round piece, can clamp easily and carry out machining with the chuck on lathe, and some non-circular workpiece are as the rocking arm in diesel engine (as shown in mark 4 in Fig. 1) or be some otherly difficult to holding workpiece with chuck, want the fixture of design specialized to locate, clamp.The position that these workpiece can be processed on lathe is generally the end face at hole and two ends, hole, and the technical requirement of processing is: the end face at two ends, hole and the axis in hole are perpendicular; Its procedure of processing is: the end face that 1, workpiece is fixed on to turning hole and one end on fixture; 2, carry out holding workpiece, the end face of the turning other end with a facing fixture; In the 2nd manufacturing procedure, need to workpiece clamp, then turning unclamp fixture and take off workpiece, the time of its loading, unloading workpiece, working (machining) efficiency was not high much larger than the time of facing.

These workpiece have two features, and one, to have location basal plane be the end face of He Kong one end, hole, two, on the hole wall in hole, be extended with similar arm shape position; Can design a kind of new facing fixture for these features.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of facing fixture of workpiece, shortens the loading, unloading time of workpiece on fixture, improves working (machining) efficiency.

This fixture comprises the disk 1 of available chuck clamping, it is characterized in that, be provided with vertical outwardly directed locating core 2 at the position, the center of circle of disk, be provided with vertical outwardly directed drive rod 3 at the position of departing from circle disk center, described locating core comprises platform portion 21 and core 22 for " protruding " font, the external diameter of described core matches with the internal diameter of workpiece hole, the length of core is slightly less than the length of workpiece hole, the external diameter of described portion is greater than the internal diameter of workpiece hole, and the residing position of described drive rod can drive workpiece rotation.

Described fixture can make like this, first locating core is spirally connected and is fixed on disk, platform portion and the core of locating core leave certain allowance, disk is clamped on chuck, again platform portion and core are machined to the size of regulation, after the size that described drive rod can be machined to regulation until platform portion and core, are fixed to again on disk.

Improve as one the position that contacts with workpiece at drive rod and be provided with magnetic steel sleeve 31.

Improve and have a magnet steel ring 23 at the core cover of locating core as another kind, magnet steel ring touch the end face of platform portion.

Be provided with magnetic steel sleeve 31 as further improvement at the workpiece of the drive rod position that contacts, have magnet steel ring 23 at the core cover of locating core, magnet steel ring touch the end face of platform portion.

The feature of this fixture is, can by the borehole jack of workpiece on the core of fixture to workpiece location, the eccentric part bit strip that props up workpiece by the drive rod of the fixture turning that part rotate end face of starting building, can meet the technical requirement of processing; The loading, unloading operation of workpiece on fixture is enclosed within workpiece on core and by workpiece and extracts from core exactly, with on fixture, workpiece is clamped to the lay day compared with unclamp operation and greatly shortens, workman's muscle power used also reduces greatly, and production efficiency increases significantly; The locating core of this fixture can be machined to given size after disk is fixed on chuck, can make the positioning precision of workpiece higher.

Brief description of the drawings

Fig. 1 is clamp structure schematic diagram of the present invention.

Fig. 2 is the use schematic diagram of this fixture

Mark in Fig. 1, Fig. 2 is expressed as: 1-disk, 2-locating core, 21-platform portion, 22-core, 23-magnet steel ring, 3-drive rod, 31-magnetic steel sleeve, 4-rocking arm, 5-lathe tool.

Detailed description of the invention

Now contrast brief description of the drawings the specific embodiment of the present invention.

A kind of facing fixture of workpiece, for the end face of turner, this fixture comprises the disk 1 of available chuck clamping, be provided with outwardly directed locating core 2 in the center of circle of disk, the axis of locating core and the end face of disk are perpendicular, the position of departing from the center of circle on disk is provided with outwardly directed drive rod 3, the axis of drive rod and the end face of disk are perpendicular, described locating core comprises platform portion 21 and core 22, the external diameter of described core matches with the internal diameter of workpiece hole, the length of core is slightly less than the length of workpiece hole, the external diameter of described portion is greater than the aperture of workpiece and is less than the maximum gauge that the hole wall of workpiece forms, the end face of described core and platform portion can be used as the setting element of workpiece, the residing position of described drive rod can prop up workpiece and can drive workpiece rotation.

Described fixture can make like this, first locating core is spirally connected and is fixed on disk, platform portion and the core of locating core leave certain allowance, disk is clamped on chuck, again platform portion and core are machined to the size of regulation, after the size that described drive rod can be machined to regulation until platform portion and core, are fixed to again on disk; Because fixture is not moved, there is not circular runout and axial runout problem in locating core, thereby the positioning precision higher to having of workpiece.

The using method of this fixture is now described as an example of Rocker arm 4 workpiece example:

Described Rocker arm 4 (as shown in Figure 2) is made up of iron material, it has the hole portion of certain length, on the middle separated time of Kong minister's degree, extend respectively two arms, the thickness of two arms is all less than the length of hole portion, and its position processing on lathe is the end face at Ji Kong two ends, hole;

After hole and an end face have been processed, can use this fixture, concrete steps are, by fixture the chuck colonel of lathe just in time, the borehole jack of rocking arm is entered to the core of locating core, a pre-processed end face is affixed to the platform end surface of locating core, one arm of rocking arm props up drive rod, mobile lathe tool 5 is near other end to be processed, start lathe, drive rod drives rocking arm rotation, lathe tool 5 used is sharp pointed knife, in the time that lathe tool advances to center of circle direction, can produce an axial thrust load to workpiece makes workpiece that axial float can not occur, can complete smoothly the processing of this end face, process finishing is pulled up workpiece from locating core,

Lathe tool used is also chopper, and its blade parallels with workpiece end face and the width of blade is greater than the wall thickness in hole, and lathe tool advances end face is cut vertically.

This fixture, by the handling of workpiece are changed into and are inserted in and extract operation by clamping with unclamp operation, has improved the handling speed of workpiece greatly, also alleviates labor strength simultaneously, has improved significantly production efficiency.This clamp structure is simple, easy to make simultaneously, and cost of manufacture is low.

In above-mentioned using method, before startup lathe, need mobile lathe tool near workpiece, to prevent that lathe from starting rear workpiece and flying out, for eliminating this potential safety hazard, can one magnetic steel sleeve 31 be set at drive rod and workpiece contact site, utilize magnetic force that workpiece is inhaled on drive rod; Or putting a magnet steel ring 23 at the core of locating core, magnet steel ring touch the end face of platform portion, can hold equally workpiece; Also can at drive rod and workpiece contact site, magnetic steel sleeve be set, at the core cover upper magnetic steel ring of locating core simultaneously.

As long as workpiece has two features, one, have location basal plane, i.e. the end face of hole He Kong one end, two, on the hole wall in hole, be extended with similar arm shape position or have the position of certain eccentric throw with hole; Can come turning other end with this fixture.It should be noted that, this fixture is high especially to iron material workpiece working (machining) efficiency, Steel material is needed to the cooperation of cutter, requires the chip-breaker of cutter to design, can reliable chip breaking.

Claims

1. the facing fixture of a workpiece, for the end face of cutting workpiece on lathe, this fixture comprises the disk (1) of available chuck clamping, it is characterized in that, be provided with vertical outwardly directed locating core (2) at the position, the center of circle of disk, the position of departing from the center of circle on disk is provided with vertical outwardly directed drive rod (3), described locating core is " protruding " font, it comprises platform portion (21) and core (22), the external diameter of described core matches with the internal diameter of workpiece hole, the length of core is slightly less than the length of workpiece hole, the external diameter of described portion is greater than the internal diameter of workpiece hole, the residing position of described drive rod can drive workpiece rotation.

2. the facing fixture of workpiece according to claim 1, is characterized in that, the position that contacts with workpiece at drive rod is provided with magnetic steel sleeve (31).

3. the facing fixture of workpiece according to claim 1, is characterized in that, has a magnet steel ring (23) at the core cover of locating core, and magnet steel ring touch the end face of platform portion.

4. the facing fixture of workpiece according to claim 1, is characterized in that, is provided with magnetic steel sleeve (31) at the workpiece of the drive rod position that contacts, and has magnet steel ring (23) at the core cover of locating core, and magnet steel ring touch the end face of platform portion.

5. the facing fixture of workpiece according to claim 1 can make like this, it is characterized in that, first locating core is spirally connected and is fixed on disk, platform portion and the core of locating core leave certain allowance, disk is clamped on chuck, again platform portion and core are machined to the size of regulation, after the size that described drive rod can be machined to regulation until platform portion and core, are fixed to again on disk.