CN103831633A

CN103831633A - Cross hinge pin floating type reamer clamp

Info

Publication number: CN103831633A
Application number: CN201210476964.4A
Authority: CN
Inventors: 余秉智
Original assignee: CSR Yangtze Co Ltd
Current assignee: CRRC Yangtze Co Ltd
Priority date: 2012-11-22
Filing date: 2012-11-22
Publication date: 2014-06-04

Abstract

The invention discloses a cross hinge pin floating type reamer clamp. The cross hinge pin floating type reamer clamp comprises a clamp body used for being connected with a tailstock sleeve of a machine tool, a cylindrical jacket used for installing a reamer and a cross hinge pin. A pair of supporting shafts of the cross hinge pin are matched with a rear-end shaft lug of the cylindrical jacket in a hinged mode, and the other pair of supporting shafts of the cross hinge pin are matched with a front-end shaft lug of the clamp body in a hinged mode. The cross hinge pin floating type reamer clamp is low in manufacturing cost, can be widely used on equipment such as a lathe, a radial drilling machine and a boring mill for finish reaming of precision inner holes, overcomes the shortcomings that horn-shaped mouths are generated, the aperture is increased and the inner holes are not round during machining, guarantees the high precision and the high surface quality of inner hole machining, can be connected with reamers of various specifications and machine the inner holes of different sizes, and is good in generality and wide in application range.

Description

The floating type machine reamer fixture of cross bearing pin

Technical field

The present invention relates to lathe endoporus machining machine reamer, refer to particularly the floating type machine reamer fixture of a kind of cross bearing pin.

Background technology

In prior art, machine reamer is arranged on Morse's cone drill bushing, Morse's cone drill bushing again with tailstock tool rigid attachment, by giving into of machine reamer, rotational workpieces is carried out to ream machining.Due to the runout error of the wearing and tearing of machine tool track, main shaft bearing wearing and tearing and with the reason such as coaxiality error, Morse's cone drill bushing mismachining tolerance of tailstock, make when with Morse's cone drill bushing fitting machine reamer processing endoporus, machine reamer and machine tool chief axis and workpiece hole to be processed not on same axis, thereby cause that the endoporus of processing forms that horn mouth, aperture increase, the defect such as circle of endoporus.Therefore, guarantee processed inner hole precision, just must make machine tool chief axis and workpiece hole to be processed and reamer keep very high axiality.But solve machine tool track the wearing and tearing of wearing and tearing, main shaft bearing runout error and with coaxiality error, the Morse's cone drill bushing mismachining tolerance of tailstock be very difficult and time-consuming, and the cost of lathe adjustment and reparation is also very high.

Summary of the invention

Object of the present invention is exactly will be for above-mentioned defect, and a kind of simple in structure, with low cost, floating type machine reamer fixture of cross bearing pin that can guarantee processing endoporus high accuracy and great surface quality is provided.

For achieving the above object, the cross pin shaft type floating engine reamer fixture that the present invention is designed, comprise clamp body in order to be connected with tailstock tool sleeve and the tubular chuck in order to fitting machine reamer, its special character is: also comprise cross bearing pin, the hinged cooperation of rear end axle ear of a pair of fulcrum of described cross bearing pin and tubular chuck, another of described cross bearing pin be hinged cooperation of front end axle ear with clamp body to fulcrum.

As preferred version, between the rear end axle ear that two pairs of fulcrums of described cross bearing pin are corresponding with it and front end axle ear, be provided with that a bowl profile shaft holds or copper sheathing bearing.

Further, the rear end axle ear that two of the described cross bearing pin pairs of fulcrums are corresponding with it and the axial fit-up gap of front end axle ear are 0.1 ~ 0.3mm.

Further, the inner surface of described tubular chuck is No. four Morse's cone holes.

Further, the outer surface of described clamp body is No. four Morse's cones.

The invention has the advantages that:

One, the present invention are simple in structure, cost of manufacture is low, can be extensively on the equipment such as lathe, radial drilling machine, boring machine for the processing of finish reaming of accurate endoporus, solved that the horn mouth that processing produces, aperture increase, the defect such as circle of endoporus, guarantee high accuracy and the great surface quality of processing endoporus.

Two, with reamer, the chuck inner surface connecting to be installed be No. four Morse's cone holes in the present invention, coordinates the drill chuck of various Morse reducing sleeves and No. four Morse taper shanks, and the reamer that connects all size can be installed, and can process the endoporus of different size, and versatility is good.

The clamp body outer surface that three, the present invention connects with Installing machine tool is No. four Morse's cones, can on the equipment such as lathe, radial drilling machine, boring machine, use, applied widely.

Accompanying drawing explanation

Fig. 1 is use status architecture schematic diagram of the present invention.

Fig. 2 is that the A-A of Fig. 1 is to cross-sectional view.

Fig. 3 is the structural representation of cross bearing pin of the present invention.

In figure: scroll chuck 1, workpiece 2, machine reamer 3, tubular chuck 4, rear end axle ear 41, cross bearing pin 5, fulcrum 51, fulcrum 52, clamp body 6, front end axle ear 61, barrel of tail stock 7, tailstock body 8.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

The floating type machine reamer fixture of cross bearing pin shown in Fig. 1, comprise clamp body 6 in order to be connected with tailstock tool sleeve 7 and the tubular chuck 4 in order to fitting machine reamer 3, also comprise cross bearing

5,41 hinged cooperations of rear end axle ear of a pair of fulcrum 51 of cross bearing pin 5 and tubular chuck 4, another of cross bearing pin 5 be 61 hinged cooperations of front end axle ear with clamp body 6 to fulcrum 52, and cross bearing pin 5 is used for coupling tunnel clevis cover 4 and clamp body 6; Between the rear end axle ear 41 that two pairs of

fulcrums

51,52 of cross bearing pin 5 are corresponding with it and front end axle ear 61, be provided with that a bowl profile shaft holds or copper sheathing bearing; The rear end axle ear 41 that two pairs of

fulcrums

51,52 of cross bearing pin 5 are corresponding with it and the axial fit-up gap of front end axle ear 61 are 0.1 ~ 0.3mm; The inner surface of tubular chuck 4 is No. four Morse's cone holes, for the reamer that connects all size is installed; The outer surface of clamp body 6 is No. four Morse's cones, is used for connecting with various Installing machine tools.

Operation principle of the present invention is as follows: the present invention is in the situation that not changing existing equipment situation, substitutes Morse's cone drill bushing by custom-designed cross pin shaft type floating hinge handle of a knife, and reamer is connected with tail stock.By cross bearing pin 5 all-direction rotations, realize floating of reamer, tubular chuck 4 is by realizing cross bearing pin 5 and connecting of clamp body 6 transmission of freely rotating with moment of torsion.Two pairs of fulcrums 51 of cross bearing

5, 52 rear end axle ears 41 corresponding with it and the fit-up gap of axial 0.1 ~ 0.3mm and two pairs of fulcrums 51 of cross bearing pin 5 of front end axle ear 61, between 52 rear end axle ears 41 corresponding with it and front end axle ear 61, a bowl profile shaft holds or the radial clearance of copper sheathing can well compensate, eliminate the wearing and tearing because of machine tool track, the runout error of the bearing wear of main shaft and with the coaxiality error of tailstock, horizontal and vertical degree error between workpiece and reamer that Morse's cone drill bushing mismachining tolerance produces.Reamer is take the bore area processed as positioning datum, self-centering, remains and the concentricity of workpiece height, carries out stably ream machining, solve the defects such as " horn mouth " that processing produces, aperture increase, endoporus is not round, guaranteed high accuracy and the great surface quality of processing endoporus.

The course of work of the present invention is as follows: this fixture can be applicable to the endoporus such as lathe in machine-building, drilling machine, boring machine and adds man-hour, while finish reaming endoporus, uses.Workpiece 2 is placed in to scroll chuck 1, assembly machine reamer 3, the drum shape cylinder clevis that the handle of a knife of machine reamer 2 is placed in to this fixture overlaps in No. four Morse's cone holes of 4 inner surface, it is coordinated tight, the clamp body 6 of this fixture is placed in tail stock sleeve 7, and clamp body 6 outer surfaces are that No. four Morse's cone surfaces coordinate tightly with barrel of tail stock 7 inner surfaces, start this equipment, lathe spindle drives workpiece rotation by scroll chuck, can carry out ream machining.

Points for attention: because reamer is take the bore area processed as positioning datum, can not correction position degree error, so before fraising, need to guarantee that position degree is correct, and stay suitable ream surplus, the position degree that just can guarantee the endoporus of processing correctly, size high accuracy and surperficial high-quality.

Claims

1. the floating type machine reamer fixture of cross bearing pin, comprise clamp body (6) in order to be connected with tailstock tool sleeve (7) and the tubular chuck (4) in order to fitting machine reamer (3), it is characterized in that: also comprise cross bearing pin (5), the a pair of fulcrum (51) of described cross bearing pin (5) and hinged cooperation of rear end axle ear (41) of tubular chuck (4), another of described cross bearing pin (5) be hinged cooperation of front end axle ear (61) with clamp body (6) to fulcrum (52).

2. the floating type machine reamer fixture of cross bearing pin according to claim 1, is characterized in that: between the rear end axle ear (41) that two pairs of fulcrums (51,52) of described cross bearing pin (5) are corresponding with it and front end axle ear (61), be provided with that a bowl profile shaft holds or copper sheathing bearing.

3. the floating type machine reamer fixture of cross bearing pin according to claim 1 and 2, is characterized in that: the rear end axle ear (41) that two pairs of fulcrums (51,52) of described cross bearing pin (5) are corresponding with it and the axial fit-up gap of front end axle ear (61) are 0.1 ~ 0.3mm.

4. the floating type machine reamer fixture of cross bearing pin according to claim 1 and 2, is characterized in that: the inner surface of described tubular chuck (4) is No. four Morse's cone holes.

5. the floating type machine reamer fixture of cross bearing pin according to claim 1 and 2, is characterized in that: the outer surface of described clamp body (6) is No. four Morse's cones.