CN201537827U

CN201537827U - Fast loading and unloading fixture for large boring machine cutter

Info

Publication number: CN201537827U
Application number: CN2009202508906U
Authority: CN
Inventors: 李鸿斌
Original assignee: Tianjin Zhongzhong Science Technology and Engineering Co Ltd
Current assignee: Tianjin Zhongzhong Science Technology and Engineering Co Ltd
Priority date: 2009-11-26
Filing date: 2009-11-26
Publication date: 2010-08-04
Anticipated expiration: 2019-11-26

Abstract

The utility model relates to a fast loading and unloading fixture for a large boring machine cutter, which comprises a cutter handle and a cutter handle clamping mechanism, and is characterized in that: the cutter handle is a tapered handle with the rear end provided with a cone handle, the middle provided with a flange and the front end provided with a cutter connecting structure; the cutter handle clamping mechanism consists of a tapered reducing sleeve with a central taper hole, a pressing sleeve with the front end provided with an internal flange and the rear end provided with internal threads, and a plurality of cutter handle locking bolts; the cone handle at the rear end of the cutter handle is inserted and arranged in the central taper hole of the tapered reducing sleeve, the middle flange props against the front end of the pressing sleeve; the cutter handle locking bolts are all distributed on the flange of the cutter handle, penetrate through the flange of the cutter handle and the internal flange at the front end of the pressing sleeve, and tightly prop against the end face of the front end of a main shaft; and positioning keys are arranged between the front end face of the main shaft and the flange of the cutter handle as well as the internal flange of the pressing sleeve. The fast loading and unloading fixture for the large boring machine cutter has the following advantages: the structure is simple; in addition, the loading and unloading of the cutter can be easily accomplished by only screwing on or screwing off the cutter handle locking bolts when loading or unloading the cutter handle, thus being convenient and simple, and saving labor and time.

Description

The quick loading and unloading clamp of large-scale borer cutter

Technical field

The utility model belongs to the clamping device of cutter, particularly relates to the quick loading and unloading clamp of a kind of large-scale borer cutter.

Background technology

In the heavy-duty machinery manufacturing, the large-scale borer that also has many former Soviet Unions and Russia to make at present, the front-end of spindle of this boring machine is provided with the Φ 160 that is used for the clamping cutter, 1: 20 taper hole, thereby the shank of the cutter of its use also must be the taper shank that tapering matches with it, the taper shank that adopts this tapering is as machine tool chief axis and cutter ways of connecting, though its self-lock force is very big, but also cause the loading and unloading difficulty, what its clamping device adopted in addition is disc type edge cam structural shape, its structure is not only complicated but also heavy, the loading and unloading cutter is promptly taken a lot of work and is time-consuming, for ease of the loading and unloading cutter, even has to aim at small electrical cucurbit of its installing.

Summary of the invention

The utility model provides a kind of simple in structure for solving the technical problem that exists in the known technology, the quick loading and unloading clamp of large-scale borer cutter of loading and unloading cutter saving of work and time.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

The quick loading and unloading clamp of large-scale borer cutter includes handle of a knife and is contained in the handle of a knife clamping device of machine tool chief axis front end, and described handle of a knife is that the rear end is provided with circular cone handle, centre and has the taper shank that flange, front end are provided with the cutter head syndeton; Described handle of a knife clamping device is by the tapering drill holder that is installed in the center that the has taper hole in the tapered bore of machine tool spindle, the front end that is screwedly mounted on spindle end is provided with the gland that the inward flange rear end is provided with internal thread, and several handle of a knife lock-screws are formed, the tapering of the center taper hole of tapering drill holder is identical with the tapering of the circular cone handle of handle of a knife rear end, the circular cone handle of handle of a knife rear end is inserted in the center taper hole of tapering drill holder, middle flange leans the front end at gland, the handle of a knife lock-screw is distributed on the flange of handle of a knife, it passes the flange of handle of a knife and the inward flange of gland front end, hold out against on the end face of front-end of spindle, between the front end face of the inward flange of the flange of handle of a knife and gland and main shaft, positioning key is housed also.

The utility model can also adopt following technical measures:

The tapering of the circular cone handle of the rear end of described handle of a knife is 7: 24; The tapering of described tapering drill holder is 1: 20, and the tapering of the center taper hole that it has is identical with the tapering of the circular cone handle of the rear end of handle of a knife, is 7: 24 also.

The cutter head syndeton of described handle of a knife front end is the centralized positioning cylinder that has by the round boss that is located at handle of a knife front end central authorities, at the round boss front end, constitutes at uniform several screws of round boss front end face periphery and at several keyways that the round boss periphery has.

Advantage and the good effect that the utlity model has are: simple in structure; In addition owing to insert tapering drill holder in tapered bore of machine tool spindle, thereby can to use the shank tapering be 7: 24 handle of a knife, make the packing into and unload and become easy of handle of a knife, simultaneously because the handle of a knife clamping device only adopts gland, handle of a knife lock-screw and positioning key to clamp and locate, clamping or dismounting handle of a knife are only screwed on or are backed out the loading and unloading that the handle of a knife lock-screw just can be finished cutter like a cork, not only light but also simple, and saving of work and time.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the B-B cutaway view of Fig. 1.

Label among the figure is respectively: the 1-machine tool chief axis; 2-tapering drill holder; The 3-gland; 4-circular cone handle; The 5-positioning key; The 6-flange; 7-handle of a knife lock-screw; The 8-round boss; 9-centralized positioning cylinder; The 10-keyway; The 11-inward flange; The 12-internal thread; 13-center taper hole; The 14-tapered bore of machine tool spindle; The 15-screw.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 2, the quick loading and unloading clamp of large-scale borer cutter includes handle of a knife and the handle of a knife clamping device that is contained in machine tool chief axis 1 front end.Handle of a knife is that to be provided with tapering be 7: 24 circular cone handle 4 in the rear end, the centre has flange 6, front end is provided with the taper shank of cutter head syndeton, the handle of a knife clamping device is by tapering drill holder 2, gland 3, and four handle of a knife lock-screws 7 are formed, the tapering of tapering drill holder is 1: 20, it has center taper hole 13, the tapering of center taper hole is identical with the tapering of the circular cone handle of the rear end of handle of a knife, it also is 7: 24, it also is in 1: 20 the tapered bore of machine tool spindle 14 that the tapering drill holder is installed in tapering, the front end of gland is provided with inward flange 11, the rear end is provided with internal thread 12, it is screwedly mounted on the front end of spindle end and the tapering drill holder is pushed up solid in tapered bore of machine tool spindle, when handle of a knife is installed, the circular cone handle of handle of a knife rear end is inserted in the center taper hole of tapering drill holder, middle flange 6 leans the front end at gland, four handle of a knife lock-screws 7 are distributed on (see figure 1) on the flange of handle of a knife, they pass the flange of handle of a knife and the inward flange of gland front end, hold out against on the end face of front-end of spindle, in order to transmit the moment of torsion of turning round cutter and the circumferential location of cutter, between the front end face of the inward flange of the flange of handle of a knife and gland and main shaft, two positioning keys 5 are housed also.Below see Fig. 1, in addition, in order to make handle of a knife that any cutter head type or self-control cutting tool can be installed, the cutter head syndeton of handle of a knife front end of the present utility model is the centralized positioning cylinder 9 that has by the round boss 8 that is located at handle of a knife front end central authorities, at the round boss front end, constitutes at uniform four screws 15 of round boss front end face periphery and at two keyways 10 that the round boss periphery has.

The utility model is when the clamping cutter, the handle of a knife tapering drill holder of packing into, four the handle of a knife lock-screws of screwing on just can be pushed into the circular cone handle of handle of a knife rear end in the tapering drill holder fully, continue to turn four handle of a knife lock-screws, gland is pulled outwardly, and reaction force makes handle of a knife push away to tapering drill holder direction, so just, handle of a knife has been fixed tightly on the main shaft, as long as back out the handle of a knife lock-screw when unloading cutter, just can unload handle of a knife like a cork, and tapering drill holder and gland can forever be contained on the machine tool chief axis, no longer unload.

Claims

1. quick loading and unloading clamp of large-scale borer cutter includes handle of a knife and is contained in the handle of a knife clamping device of machine tool chief axis front end, it is characterized in that: described handle of a knife is that the rear end is provided with circular cone handle, centre and has the taper shank that flange, front end are provided with the cutter head syndeton; Described handle of a knife clamping device is by the tapering drill holder that is installed in the center that the has taper hole in the tapered bore of machine tool spindle, the front end that is screwedly mounted on spindle end is provided with the gland that the inward flange rear end is provided with internal thread, and several handle of a knife lock-screws are formed, the tapering of the center taper hole of tapering drill holder is identical with the tapering of the circular cone handle of handle of a knife rear end, the circular cone handle of handle of a knife rear end is inserted in the center taper hole of tapering drill holder, middle flange leans the front end at gland, the handle of a knife lock-screw is distributed on the flange of handle of a knife, it passes the flange of handle of a knife and the inward flange of gland front end, hold out against on the end face of front-end of spindle, between the front end face of the inward flange of the flange of handle of a knife and gland and main shaft, positioning key is housed also.

2. the quick loading and unloading clamp of large-scale borer cutter according to claim 1 is characterized in that: the tapering of the circular cone handle of the rear end of described handle of a knife is 7: 24; The tapering of described tapering drill holder is 1: 20, and the tapering of the center taper hole that it has is identical with the tapering of the circular cone handle of the rear end of handle of a knife, is 7: 24 also.

3. the quick loading and unloading clamp of large-scale borer cutter according to claim 1 is characterized in that: the cutter head syndeton of described handle of a knife front end is the centralized positioning cylinder that has by the round boss that is located at handle of a knife front end central authorities, at the round boss front end, constitutes at uniform several screws of round boss front end face periphery and at several keyways that the round boss periphery has.