CN100534720C

CN100534720C - Grinding machine spindle end mechanism

Info

Publication number: CN100534720C
Application number: CNB2008101080008A
Authority: CN
Inventors: 卫美红; 徐群芳
Original assignee: Changshu Zhongheng Cnc Machine Co ltd
Current assignee: Pacific Textile Machinery (Changshu) Co., Ltd.
Priority date: 2008-05-07
Filing date: 2008-05-07
Publication date: 2009-09-02
Anticipated expiration: 2028-05-07
Also published as: CN101269477A

Abstract

The invention relates to a main shaft end apparatus of a grinding machine, which belongs to the technical field of a machining device. The apparatus comprises a taper body arranged at a main shaft end, a taper sleeve which is used for arranging a grinding wheel and provided with a taper hole in the middle and a screw tooth on the external circumference, and a compression nut. The main shaft end apparatus of the grinding machine is characterized in that the apparatus also comprises a holding disc and a screw; a screw hole is arranged in the middle of the holding disc; a pair of sleeve keys is arranged on the inner end face of the holding disc; a pair of shaft keys is arranged on the outer end face of the holding disc; correspondingly, sleeve key grooves used for the sleeve keys to be inserted are arranged on the outer end face at one side of the holding disc facing to the taper sleeve, and shaft key grooves used for the shaft keys to be inserted are arranged on the outer end face at one side of the holding disc facing to the taper body; after passing through the screw hole in the middle of the holding disc, and the screw is rotationally fixed with the screw hole arranged at the center of the taper hole. The main shaft end apparatus of the grinding machine has the advantages that the grinding wheel on the taper sleeve is ensured to be always in a compressed state, the splashing of abrasive particle is reduced through changing the rotation direction of the main shaft when complex workpieces are processed, thereby improving the working condition.

Description

Grinding machine spindle end mechanism

Technical field

The present invention relates to a kind of grinding machine spindle end mechanism, is to the improvement of existing grinding machine spindle end mechanism, belongs to the machining set-up technical field.

Background technology

Grinding machine spindle end mechanism in the prior art, its structure is disclosed by Fig. 1, it comprises that one is located at the cone 11 of main shaft 1 termination, has the tapered sleeve 2 that is used to install emery wheel 5 that has thread 22 on taper hole 21 and the excircle in the middle of one, one clamp nut 3, with locking nut 4, described clamp nut 3 and thread 22 on tapered sleeve 2 excircles revolve joins and emery wheel 5 is fixed on the tapered sleeve 2, described tapered sleeve 2 is set on the cone 11 of main shaft 1 termination by the taper hole 21 of centre, described cone 11 has extended thread segment 111 in the middle of leading section, on thread segment 111, revolve and be furnished with locking nut 4, tapered sleeve 2 is fixed on the cone 11 of main shaft 1 termination by closely cooperating of thread segment 111 on locking nut 4 and the cone 11.The problem that above-mentioned grinding machine spindle end mechanism exists in actual use is: the locking of tapered sleeve 2 and cone 11 only depends on revolving to join and realizing that it is not firm to lock, and has potential safety hazard of locking nut 4 and thread segment 111; Secondly, locking nut 4 is furnished with left-handed and differentiation dextrorotation with revolving of thread segment 111, in order to prevent getting loose and cause the loosening phenomenon that emery wheel 5 occurs between the two, must keep at work main shaft 1 direction of rotation should with locking nut 4, thread segment 111 revolve prescription to consistent, so grinding machine spindle end mechanism of this structure, 1 on its main shaft allows folk prescription to rotation, but in modern numerically control grinder, because the processing work shape is complicated, in process, cause abrasive particle to splash to different directions along with the continuous variation of cutting point, serious environment pollution, splash in order to improve abrasive particle that this influences the bad phenomenon of environment, this does adaptive rotation forward or backwards with regard to needing main shaft 1 can follow the variation of cutting point in the course of the work, but said structure can only one-directional rotation in order to guarantee emery wheel 5 not occur loosening, unless realize by the main shaft of changing different rotation directions, but complex operation, operating efficiency is very low.

Summary of the invention

The objective of the invention is to provide a kind of need not just can realize the rotation forward or backwards of main shaft by changing main shaft, and can guarantee that when main shaft rotates forward or backwards emery wheel is in the grinding machine spindle end mechanism of compacted state all the time.

The objective of the invention is to reach like this, a kind of grinding machine spindle end mechanism, comprise that one is located at the cone of spindle end, has the tapered sleeve that is used to install emery wheel that has thread on taper hole and the excircle in the middle of one, clamp nut, thread on described clamp nut and the tapered sleeve excircle revolves joins and emery wheel is fixed on the tapered sleeve, described tapered sleeve is set on the cone of spindle end by the taper hole of centre, be characterized in: also comprise a tightening dish and a screw, centre at described tightening dish has screw hole, on the inner face of described tightening dish, has a pair of cover key, on the outer face of described tightening dish, has a pair of axle key, correspondingly, on the outer face of tightening dish one side, offer the cover keyway that is used for for a pair of cover key embedding at described tapered sleeve, and on the outer face of tightening dish one side, offering the shaft key groove that is used for for a pair of axle key embedding in described cone, described screw is rotated with the screw that is located at the taper hole center after passing the middle screw hole of tightening dish.

A pair of cover key of the present invention and a pair of axle key are square key, and correspondingly, described cover keyway and shaft key groove are square groove.

A pair of cover key of the present invention and a pair of axle key radially being vertical setting at the inside and outside end face of tightening dish.

The present invention is because after adopting said structure, the beneficial effect that has is: in the cover keyway that embeds tapered sleeve respectively by a pair of cover key on the inside and outside end face of tightening dish and a pair of axle key and the shaft key groove of cone, can eliminate relatively rotating between the cone of main shaft and the tapered sleeve fully, therefore no matter main shaft can guarantee all that when rotating forward or backwards the emery wheel on the tapered sleeve is in compacted state all the time, like this when the processed complex workpiece, can reduce splashing of abrasive particle by the direction of rotation that changes main shaft, thereby help improving working environment.

Description of drawings

Fig. 1 is the prior art structure chart.

Fig. 2 is one embodiment of the invention reference diagram.

Fig. 3 is the planar structure schematic diagram of Fig. 2.

Among the figure: 1. spindle end, 11. cones, 111. thread segments, 112. shaft key groove, 113. screws; 2. tapered sleeve, 21. taper holes, 22. threads, 23. overlap keyways; 3. clamp nut; 4. locking nut; 5. emery wheel; 6. tightening dish, 61. axle keys, 62. overlap keys, 63. screw holes; 7. screw.

The specific embodiment

By the description of applicant, will help to understand the present invention more, and good effect of the present invention is embodied more, but embodiment should not be considered as the restriction to some extent to the present invention program embodiment.

See also Fig. 2 and in conjunction with Fig. 3, grinding machine spindle end mechanism of the present invention comprises that cone 11, a centre that is located at main shaft 1 termination has tapered sleeve 2, a clamp nut 3, a tightening dish 6 and a screw 7 that has thread 22 on taper hole 21 and the excircle, and the cone 11 of described main shaft 1 inwardly is processed with screw 113 in the centre that radially offers square shaft keyway 112, left end end face of left end end face; Described tapered sleeve 2 radially offers square sleeve keyway 23 the left end end face, on the excircle of tapered sleeve 2, be arranged with emery wheel 5, emery wheel 5 revolves by clamp nut 3 and thread 22 on tapered sleeve 2 excircles joins and emery wheel 5 is fixed on the tapered sleeve 2, tapered sleeve 2 is set on the cone 11 of main shaft 1 termination by the taper hole 21 of centre, described thread 22 can be made left-handed thread or dextrorotation thread, can select the corresponding to thread 22 of rotation direction for use according to the different rotary direction of main shaft 1 like this, and change tapered sleeve 2 is quite conveniently, and can guarantee between clamp nut 3 and the tapered sleeve 2 cooperate more reliable; It is screw hole 63 that the centre of described tightening dish 6 has through hole, be cover key 62 at a pair of square key that outwards is convexly equipped with of radially being formed with of tightening dish 6 inner faces, at a pair of square key that outwards is convexly equipped with of radially being formed with of tightening dish 6 outer faces is axle key 61, and a pair of cover key 62 and a pair of axle key 61 are vertical setting.Here need to prove: the shape of shaft key groove 112, cover keyway 23 is not subjected to any restriction, they can also be band semi-circular groove of certain radian or polygon groove etc., correspondingly, the shape of axle key 61 on the tightening dish 6 and cover key 62 is not subjected to any restriction yet, as long as match with the shape of shaft key groove 112, cover keyway 23.

Please continue to consult Fig. 2, Fig. 3 narrates installation process of the present invention: earlier emery wheel 5 is inserted on the tapered sleeve 2, and revolve by clamp nut 3 and thread 22 on tapered sleeve 2 excircles and to join and emery wheel 5 is fixed on the tapered sleeve 2, this assembly is through after balance on the grinding wheel balancer, can directly be installed on the cone 11 of main shaft 1 termination, again a pair of axle key on the tightening dish 6 61 is embedded in the shaft key groove 112 of cone 11, and a pair of cover key on the tightening dish 6 62 is embedded in the cover keyway 23 of tapered sleeves 2, get final product with screw 113 lockings in the middle of the cone 11 in screw hole 63 backs of passing in the middle of the tightening dish 6 by screw 7 at last.

Claims

1, a kind of grinding machine spindle end mechanism, comprise that one is located at the cone (11) of main shaft (1) termination, has the tapered sleeve that is used to install emery wheel (5) (2) that has thread (22) on taper hole (21) and the excircle in the middle of one, clamp nut (3), thread (22) on described clamp nut (3) and tapered sleeve (2) excircle revolves joins and emery wheel (5) is fixed on the tapered sleeve (2), described tapered sleeve (2) is set on the cone (11) of main shaft (1) termination by middle taper hole (21), it is characterized in that also comprising a tightening dish (6) and a screw (7), has screw hole (63) in the centre of described tightening dish (6), on the inner face of described tightening dish (6), has a pair of cover key (62), on the outer face of described tightening dish (6), has a pair of axle key (61), correspondingly, on the outer face of tightening dish (6) one sides, offer the cover keyway (23) that is used for for a pair of cover key (62) embedding at described tapered sleeve (2), and on the outer face of tightening dish (6) one sides, offering the shaft key groove (112) that is used for for a pair of axle key (61) embedding in described cone (11), described screw (7) is rotated with the screw (113) that is located at taper hole (21) center after passing the middle screw hole (63) of tightening dish (6).

2, grinding machine spindle end mechanism according to claim 1 is characterized in that described a pair of cover key (62) and a pair of axle key (61) are square key, and correspondingly, described cover keyway (23) and shaft key groove (112) are square groove.

3, grinding machine spindle end mechanism according to claim 1 and 2 is characterized in that described a pair of cover key (62) and a pair of axle key (61) radially being vertical setting at tightening dish (6) inside and outside end face.