CN2361381Y

CN2361381Y - Revolving mainshaft axial position adjusting mechanism for lapper

Info

Publication number: CN2361381Y
Application number: CN 99222452
Authority: CN
Inventors: 李军
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-08
Filing date: 1999-01-08
Publication date: 2000-02-02
Anticipated expiration: 2009-01-08

Abstract

The utility model relates to the technological transformation of a revolving main shaft position adjusting mechanism for a lapper. The utility model mainly comprises a worm wheel and worm screw micro-motion mechanism and a threaded rod quick-motion mechanism, and a threaded rod is matched with a coarse thread of a bearing seat. The utility model is characterized in that the inner ring of the worm wheel of the micro-motion mechanism is matched with a fine thread of an end cover of a bearing sleeve, and the worm wheel is axially connected with the threaded rod in a spacing way by a thrust bearing which is sheathed on the threaded rod. The utility model completely overcomes the disadvantages of the original structure that two mechanisms are mutually disturbed when are operated, and even the mutual locking phenomenon can be caused. The utility model realizes the performances of accurate operation, reliable operation, flexible operation, etc., and the structure of the utility model is simple.

Description

The rotary main shaft axial displacement guiding mechanism of grinder

The utility model relates to the grinding machinery that industries such as being widely used in papermaking, food processing, pharmacy and chemical industry realizes the raw material comminution, in particular be used to change abrasive disk space and be installed on the guiding mechanism of realizing axial fine motion of main shaft and fast offset on the rotary main shaft.

The utility model is primarily aimed at Chinese patent CN97226970.3 name and is called the technological transformation that " the rotary main shaft axial displacement guiding mechanism of grinder " carried out.The disclosed guiding mechanism of former patent is made up of the worm and gear micromotion mechanism and the screw rod rapid adjustment mechanism that are installed on the main shaft; two mechanisms are after by the thin bar place of worm gear 10 and screw rod 12 micromotion mechanism and rapid adjustment mechanism spiral being connected; connect with end cap 6 axial limitings of a bearing block through a thrust bearing 16; the major defect that this guiding mechanism exists is: worm gear is during along the thin bar place screw thread rotation transmission of screw rod; usually can drive screw rod 12 and fast fixed handle rotates simultaneously; not only destroyed mill feeding accurately; influence the manufacturing schedule and the quality of production, even also can cause mechanism's interlocking.So former patented technology is not satisfactory.

Goal of the invention of the present utility model can realize not disturbing, coordinating mutually the rotary main shaft axial displacement guiding mechanism of grinder freely when being to provide a kind of micromotion mechanism to operate with fast actuation mechanism.

The technical scheme of the rotary main shaft axial displacement guiding mechanism of the grinder of realization foregoing invention purpose is, it includes worm and gear micromotion mechanism and the fast actuation mechanism of screw rod that is slidingly mounted on rotary main shaft, screw rod cooperates with the bearing block coarse thread, the worm gear inner ring that its major technique characteristics are micromotion mechanisms cooperates with a bearing holder (housing, cover) end cap fine thread, and the thrust bearing of worm gear through being set on the screw rod connects with screw axial is spacing.

The technical program is except that the technique effect with former patented technology, it is also advantageous in that: a thrust bearing is arranged between micromotion mechanism and the fast actuation mechanism, can make the operational motion mutually noninterfere of two mechanisms, guarantee the accuracy of rotary main shaft displacement, improved stability, reliability and the flexibility of grinder work greatly; Another advantage of this guiding mechanism is that it has only been done very little adjustment to former mechanism and has promptly realized the foregoing invention purpose, has avoided the complicated of technology, and mechanism is simple, rationally.

Describe technology contents of the present utility model in detail below with reference to accompanying drawing.

Fig. 1 is the main sectional structure schematic diagram of former patented technology

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

Fig. 3, Fig. 5 and Fig. 6 are respectively the structure cutaway view of three embodiment of the utility model guiding mechanism

Fig. 4 is the B-B structure cutaway view of Fig. 3

Fig. 7 is the C-C structure cutaway view of Fig. 6.

As shown in the figure, the rotary main shaft 4 of grinder is to be installed in the bearing block 2 by bearing 30,50 and bearing holder (housing, cover) 3,5 horizontal slips, and main shaft 4 one ends are by driven by motor, and the other end connects mill.This guiding mechanism is made up of the worm and gear micromotion mechanism and the fast actuation mechanism of screw rod that are slidingly mounted on the rotary main shaft 4, the inner ring of worm gear 10 cooperates with end cap 6 fine threads of bearing block 5, fine motion handle 14 is fixedly installed on the worm screw 9, when rotary micromotion handle 14, worm screw 9 drives worm gears 10 and promotes or pulling rotary main shaft 4 and mill, realizes micrometer feed or withdraws from.The structural group of the fast actuation mechanism of screw rod becomes the screw rod 12 that is slidingly matched at rotary main shaft 4, cooperates with nut 11 coarse threads on being fixedly installed in bearing block 2, and fast fixed handle 13 is fixedlyed connected with screw rod 12.Screw rod 12 also can directly cooperate with bearing block 2 coarse threads.Example structure as shown in Figure 6, this structure is the most suitable to be applied to not have axial impulse force or the axial very little occasion of impulse force in process of lapping, its structure is: the relative screw rod 12 sides sleeve pipe B coaxial with rotary main shaft 4 that be provided with one on the worm gear 10, the thrust bearing 16 of the top of sleeve pipe B through being set in screw rod 12 thin bar places acts on the screw rod 12, by back-up ring 15 axial limitings, this structure has guaranteed that the operation of micromotion mechanism and fast actuation mechanism do not disturb mutually.Of the present utility model another implemented structure as shown in Figure 3, this embodiment mainly solves in structural design is how to cushion and absorb the moment axial impact force that grinder is produced in the raw material process of lapping, the technology settling mode of this mechanism is to be provided with a buffer gear between micromotion mechanism and fast actuation mechanism, it consists of: will be set in the spring foundation circle 7 and thrust bearing 16 axial limitings at screw rod 12 thin bar places by back-up ring 15, and realize that by some spring bolts 8 elasticity will be connected between spring foundation circle 7 and the worm gear 10.This mechanism has cushioned the moment axial impact force that is produced in the grinder course of work greatly, makes complete machine avoid destroying.More than two example structure all be that this guiding mechanism is arranged at the two spring bearings outsides, one end, enforcement structure shown in Figure 5 is that the mechanism with the utility model is arranged between the two bearings, realizes the axial displacement adjustment of rotary main shaft 4.

Claims

1, a kind of by adjusting the grinder rotary main shaft axial displacement guiding mechanism of rotary main shaft displacement change abrasive disk space, it includes worm and gear micromotion mechanism and the fast actuation mechanism of screw rod that is slidingly mounted on the rotary main shaft (4), screw rod (12) cooperates with bearing block (2) coarse thread, worm gear (10) inner ring that it is characterized in that micromotion mechanism cooperates with bearing holder (housing, cover) end cap (a 6) fine thread, and the thrust bearing (16) of worm gear (10) through being set on the screw rod (12) connects with screw rod (12) axial limiting.

2, guiding mechanism according to claim 1, it is characterized in that being provided with buffer gear between micromotion mechanism and the fast actuation mechanism, consisting of by back-up ring (15) of this mechanism will be set in screw rod (12) the carefully thrust bearing (16) and spring foundation circle (7) location at bar place, realize resilient connection by some spring bolts (8) between spring foundation circle (7) and the worm gear (10).

3, guiding mechanism according to claim 1, it is characterized in that last relative screw rod (12) side of worm gear (10) is provided with the sleeve pipe (B) coaxial with rotary main shaft (4) of one, the thrust bearing (16) of the top of sleeve pipe (B) through being set in the thin bar place of screw rod (12) acts on the screw rod (12), by back-up ring (15) axial limiting.