CN209886848U

CN209886848U - Sleeve processing tool positioned by double inner key grooves

Info

Publication number: CN209886848U
Application number: CN201920116458.1U
Authority: CN
Inventors: 孙晓垒; 贾丽红; 曲钦全; 宋池
Original assignee: YANTAI HAIDE MACHINE TOOL CO Ltd
Current assignee: YANTAI HAIDE MACHINE TOOL CO Ltd
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2020-01-03
Anticipated expiration: 2029-01-24

Abstract

The utility model provides a sleeve processing frock with two internal keyway location, which comprises a mandrel, dabber left end keyway is equipped with two short keys, and the keyway on the right is equipped with two long keys, and the short key passes through the fix with screw in the spindle, and the short key and the long key outside are equipped with unsteady clamp plate I and unsteady clamp plate II respectively, and I outside of unsteady clamp plate is equipped with the nut, and II outsides of unsteady clamp plate are equipped with the nut through the flat pad. The utility model is suitable for a telescopic processing of two interior keyways, the precision is stable, uses this frock, makes the telescopic symmetry of two keyways guarantee within 0.02mm, has solved the problem of the past too high unable processing because of the keyway symmetry requirement.

Description

Sleeve processing tool positioned by double inner key grooves

Technical Field

The utility model belongs to the field of machinery, specifically speaking relates to a sleeve processing frock with two interior keyway location.

Background

When the strength of key connection is not enough, the double-key connection of 180-degree arrangement is usually adopted, and the double-key connected sleeve workpiece has high requirement on the symmetry degree due to the positioning of an inner hole.

SUMMERY OF THE UTILITY MODEL

The utility model provides a with sleeve processing frock of two interior keyway location, the shortcoming of the unable symmetry of guaranteeing keyway to excircle and hole of processing method among the background art has been solved.

The technical scheme of the utility model is realized like this: a sleeve processing tool positioned by double inner key grooves comprises a mandrel, wherein a key groove at the left end of the mandrel is provided with two short keys, a key groove at the right end of the mandrel is provided with two long keys, the short keys are fixed on the mandrel through screws, the outer sides of the short keys and the long keys are respectively provided with a floating pressure plate I and a floating pressure plate II, the outer side of the floating pressure plate I is provided with a nut, and the outer side of the floating pressure plate II is provided with a nut through a flat gasket;

preferably, the included angle between the inclined planes on the two sides of the short key and the symmetrical center plane of the short key is 6 ︒.

Preferably, the included angle between the inclined planes on the two sides of the long key and the symmetrical center plane of the long key is 6 ︒.

Preferably, the clearance between the locked screw and the short key is 0.05 mm.

The utility model has the advantages that: the utility model is suitable for a telescopic processing of two interior keyways, the precision is stable, uses this frock, makes the telescopic symmetry of two keyways guarantee within 0.02mm, has solved the problem of the past too high unable processing because of the keyway symmetry requirement.

Drawings

Fig. 1 is a top view of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line B-B of FIG. 1 according to the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 3 according to the present invention;

fig. 5 is a schematic cross-sectional view taken along line D-D of fig. 3 according to the present invention;

FIG. 6 is a left side view of the present invention;

FIG. 7 is a schematic view of the cross-section taken along the line G-G of FIG. 3 according to the present invention;

fig. 8 is a partially enlarged schematic view of fig. 7 according to the present invention.

Description of the parts: 1. mandrel, 2, nut, 3, floating pressure plates I, 4, screw, 5, short key, 6, long key, 7, flat pad, 8, workpiece, 9 and floating pressure plate II.

Detailed Description

For a better understanding and appreciation of the invention, it will be further described in connection with the accompanying drawings: the utility model provides a sleeve processing frock with two interior keyway location, install two short keys 5 in the left keyway of dabber 1, twist two screws 4 in the screwed hole of dabber 1, should leave 0.05 mm's clearance between screw 4 and the short key 5 after the locking, make short key 5 can freely slide in the keyway of dabber 1, press the recess of clamp plate I3 that will float on two short keys 5, pin clamp plate I3 that floats with nut 2, prevent its axial float, block the left keyway notch of work piece 8 on 12 inclined planes of two short keys 5, install two long keys 6 in the keyway on dabber 1 right side, press the recess of clamp plate II 9 that will float on two long keys 6, put flat pad 7, lock with the nut. The 12-degree inclined planes on the short key 5 and the long key 6 can play a self-centering role when contacting with a key slot opening of the workpiece 8, and the clearance is 0, so that the symmetry degree of the key slot of the machined workpiece 8 is ensured.

The working process is as follows:

when blocking the left keyway notch of work piece 8 on the inclined plane of two short keys 5, because the width behind two keyway processing of two work pieces 8 is inconsistent, consequently the axial position on two short key 5 inclined planes is different, and the keyway that the size is little can push away corresponding short key 5 and slide in the keyway of work piece 8, under the effect of unsteady fulcrum of unsteady clamp plate I3, makes the inclined plane of two short keys 5 can both the chucking in the keyway notch of work piece 8.

After the nut at the right end is locked, the inclined planes of the two long keys 6 can be clamped in the keyway notches of the workpiece 8 under the action of the floating pressing plate II 9.

When changing work piece 8, only need to unscrew the nut of right-hand member several buckles after, the recess of unsteady clamp plate II 9 withdraw from long key 6 can, rotatory unsteady clamp plate II 9 certain angle is removable work piece 8 promptly, during the change, whole erects the frock, work piece 8 is pushing up two long keys 6 and is moving outward under the dead weight effect, can unload two long keys 6 and work piece 8 from the frock, change work piece 8 back, 8 keyway card of work piece are on two short key 5's inclined planes, install two long keys 6, the recess of rotatory unsteady clamp plate II 9 presses on two long keys 6, lock nut can process.

By using the tool, the symmetry degree of the double-key-groove sleeve is guaranteed within 0.02mm, and the problem that the processing cannot be performed due to the fact that the requirement on the symmetry degree of the key grooves is too high in the past is solved.

Claims

1. The utility model provides a sleeve processing frock with two interior keyway location, includes dabber (1), its characterized in that dabber (1) left end keyway is equipped with two short keys (5), and the keyway on the right is equipped with two long keys (6), and on short key (5) were fixed in dabber (1) through screw (4), short key (5) and long key (6) outside were equipped with unsteady clamp plate I (3) and unsteady clamp plate II (9) respectively, and unsteady clamp plate I (3) outside is equipped with nut (2), and unsteady clamp plate II (9) outside is equipped with nut (2) through flat pad (7).

2. The tooling for machining the sleeve positioned by the double inner key grooves according to claim 1, wherein included angles between inclined planes on two sides of the short key (5) and a symmetrical center plane of the short key (5) are both 6 ︒.

3. The tooling for machining the sleeve positioned by the double inner key grooves according to claim 1 or 2, wherein included angles between inclined planes on two sides of the long key (6) and a symmetrical center plane of the long key (6) are both 6 ︒.

4. The tooling for machining sleeves with double internal keyways according to claim 1 or 2, characterized in that the clearance between the locked screw (4) and the short key (5) is 0.05 mm.