CN200970714Y

CN200970714Y - Grinding disc rotary shaft lift mechanism for polishing machine

Info

Publication number: CN200970714Y
Application number: CN 200620067249
Authority: CN
Inventors: 刘小辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-30
Filing date: 2006-10-30
Publication date: 2007-11-07
Anticipated expiration: 2016-10-30

Abstract

The lift organ of a polishing machine includes a rack, an upright grinding spindle, a motor to drive the spindle and a supporting base to restrict the radial shake of the spindle. The spindle is wrapped in the supporting base. The main feature is the supporting base has a slippage connection with the rack and connected to the lift organ. Also the spindle is fastened to the supporting base in an axial direction. This utility model overcomes a series of problems caused by the hollow coverage between the supporting base and the spindle. Thus the rotating speed of the millstone can rise up to 1450r/min which increase the efficiency. What is more, as the spindle is fastened to the supporting base in an axial direction, the weight of the supporting base can be transferred to the millstone which intensifies the pressure to the workpiece, reduces the pneumatic force the millstone needs and cuts the operating costs of the polishing machine.

Description

The mill rotating shaft elevating mechanism of polishing machine

Technical field

The utility model relates to the mechanism of the relevant mill rotating shaft lifting in the polishing machine, particularly polishing machine that building boards such as wall floor tile are polished.

Background technology

The mill rotating shaft elevating mechanism of polishing machine, comprise frame, setting the mill rotating shaft, drive the rotating shaft motor rotating, and the supporting seat that has radially shaken main effect of contraction of a countershaft, rotating shaft is enclosed within the supporting seat rotationally.In existing polishing machine, above-mentioned supporting seat is fixed on the frame motionless, and rotating shaft is not only wanted in supporting seat and can be rotated, and must be able to slide up and down, to realize the lifting of mill.For this reason, also necessary hollow sleeve of socket between supporting seat and rotating shaft, and must leave certain interval between rotating shaft and the hollow sleeve, to guarantee that rotating shaft can slide up and down neatly in hollow sleeve.Because hollow sleeve bearing the bigger radially shaking force of rotating shaft, so the gap between rotating shaft and the hollow sleeve can increase gradually along with the increase of polishing machine service time, and the gap increases the vibrations aggravation that makes rotating shaft again conversely, has to limit the rotating speed of mill thus.The speed of grinding plate of all polishing machines is about 400～1000 rev/mins at present, and under this slow-speed of revolution, the mill utilization rate is lower.

Summary of the invention

The purpose of this utility model is the defective at above-mentioned polishing machine, and a kind of mill rotating shaft elevating mechanism that need not to be provided with hollow sleeve between supporting seat and rotating shaft is provided.

The utility model is achieved in that the mill rotating shaft elevating mechanism of polishing machine, the mill rotating shaft, the driving rotating shaft motor rotating that comprise frame, setting, and the supporting seat that has radially shaken main effect of contraction of a countershaft, rotating shaft is enclosed within this supporting seat rotationally, especially, described supporting seat and frame are slidingly connected, and connect with lift component, axial restraint between supporting seat and the rotating shaft.When lift component drove the supporting seat lifting, supporting seat and rotating shaft one lifting realized the lifting of mill thus.This shows, have only between rotating shaft of the present utility model and the supporting seat not rotate and slide, do not rotate and have only between supporting seat and the frame to slide, therefore can save the hollow sleeve that must be installed in the prior art between supporting seat and the rotating shaft, become big and a series of problems that bring with regard to having avoided gap between hollow sleeve and the rotating shaft to wear and tear gradually like this.

The utility model has the advantages that to have overcome the problem that between supporting seat and rotating shaft, hollow sleeve is set and brings, the rotating speed of rotating shaft, just the rotating speed of mill can be brought up to more than 1450 rev/mins, thereby has improved the mill utilization rate; Have, owing to be axial restraint between supporting seat and the rotating shaft, so the weight of supporting seat can be delivered on the mill by rotating shaft, thereby strengthens the pressure of mill to work piece, reduces the originally required Pneumatic pressure of mill, reduces the operating cost of polishing machine again.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the left view of Fig. 1.

The specific embodiment

Referring to Fig. 1, Fig. 2, the mill rotating shaft elevating mechanism of polishing machine comprises frame 1, the mill rotating shaft 2 of erectting, drives rotating shaft motor rotating 3, and the supporting seat that has radially shaken main effect of contraction 4 of a countershaft.Supporting seat 4 connects with lift component.The lift component of present embodiment is a slide bar 5, and supporting seat 4 is fixing with slide bar 5, and slide bar 5 is connected with the piston rod 7 of a cylinder 6, and cylinder 6 is fixedlyed connected with frame 1.But slide bar 5 oscilaltion under cylinder 6 drives, supporting seat 4 is with slide bar 5 one liftings.As preferred forms, should be as shown in the figure between supporting seat 4 and the slide bar 5 fixing by chuck 8, chuck 8 clips slide bar 5, and with supporting seat 4 global formations.

Present embodiment is with sliding sleeve 9 in the outside of slide bar 5, and sliding sleeve 9 is fixing with frame 1, constitutes being slidingly connected between supporting seat 4 and the frame 1 thus.Supporting seat 4 is slidingly connected by slide bar 5 and frame 1, helps slowing down the vibrations of supporting seat 4.For reducing friction, can between sliding sleeve 9 and slide bar 5, sliding bearing be set, for example a copper sheathing.As preferred forms, above-mentioned slide bar 5, cylinder 6 should be provided with two groups as shown in Figure 1, are arranged in the right and left of supporting seat 4 symmetrically, make that so the elevating movement of supporting seat 4 is more steady, also can more effectively retrain the vibrations of supporting seat 4.The supporting seat 4 of present embodiment is a sleeve concentric with rotating shaft 2, be fixed with rolling bearing 10 between rotating shaft 2 and supporting seat 4 inwalls, the inwall of the outer ring of rolling bearing 10 and supporting seat 4 is fixed, inner ring and rotating shaft 2 is fixing, constitutes supporting seat 4 thus and connects and the axial restraint connecting relation with rotation between the rotating shaft 2.

As further improvement, present embodiment also is surrounded by shock absorbing ring 11 at the outer wall of supporting seat 4, and shock absorbing ring 11 is fixed on the frame 1.Shock absorbing ring 11 plays the effect that slows down supporting seat 4 vibrations.Shock absorbing ring 11 can be made with the rubber elastomeric material.As preferred forms, fixedly frame 1 position of shock absorbing ring 11 should be hollow tubular as shown in Figure 1 and Figure 2, and shock absorbing ring 11 is fixed on the hollow cylinder inwall.

During polishing machine work, installing with the end face in the lower end of rotating shaft 2 is the mill 13 of working face.This mill 13 is made of discoid matrix 13a and the abrasive material 13b that is fixed on the matrix end face.For reducing the vibrations between mill 13 and the rotating shaft 2, between rotating shaft 2 and mill 13, damping rubber cushion 14 shown in Figure 1 should be installed, make rotating shaft 2 form flexible the connection with mill 13.When workpiece is polished, motor 3 drives rotating shaft 2 and the rotation of mill 13 1 superhigh speeds, cylinder 6 drives supporting seat 4 by slide bar 5 and rotating shaft 2 descends together, mill 13 is pressed on the workpiece to be polished, because the weight of supporting seat 4 and slide bar 5 can be delivered on the mill 13 by rotating shaft 2, therefore only need to give cylinder 6 a little Pneumatic pressure, just can satisfy the pressure of 13 pairs of workpiece of required mill.After polishing was finished, cylinder 6 rose to original position together by slide bar 5 drive supporting seats 4 and rotating shaft 2 and gets final product.

The fixed form of motor 3 has two kinds, as shown in Figure 1 a kind of, motor 3 and frame 1 are fixed together, connect by axle sleeve 15 between motor shaft and the rotating shaft 2, transmit torsion by axle sleeve 15, connect by slip flat key (also can be spline) between axle sleeve 15 and the rotating shaft 2, rotating shaft 2 can be slided in axle sleeve 15, axle sleeve 15 connects with a fixed cover 17 by bearing 16, fixed cover 17 is fixing with frame 1, and be slidingly matched with supporting seat 4, be fixed with sliding bearing 12 between supporting seat 4 and the fixed cover 17, sliding bearing 12 plays the effect that reduces frictional force between supporting seat 4 and the fixed cover 17, and certain cushioning effect, sliding bearing 12 are arranged can be a copper sheathing or make with other elastomeric materials; Another kind of motor fixed form can be fixedlyed connected motor 3 with supporting seat 4, make motor 3 with supporting seat 4 one liftings, connects with general shaft coupling between motor shaft and the rotating shaft 2 like this to get final product.No matter adopt which kind of motor fixed form, preferably should be by the rotating shaft of motor direct-drive mill, so that whole elevating mechanism is the compactest.

Claims

1, the mill rotating shaft elevating mechanism of polishing machine, the mill rotating shaft, the driving rotating shaft motor rotating that comprise frame, setting, and the supporting seat that has radially shaken main effect of contraction of a countershaft, rotating shaft is enclosed within this supporting seat rotationally, it is characterized in that: described supporting seat and frame are slidingly connected, and connect axial restraint between supporting seat and the rotating shaft with lift component.

2, mill rotating shaft elevating mechanism as claimed in claim 1, it is characterized in that: described lift component is a slide bar, and supporting seat and slide bar are fixed, and slide bar is connected with the piston rod of a cylinder, and cylinder is fixed on the frame.

3, mill rotating shaft elevating mechanism as claimed in claim 2, it is characterized in that: slide bar is with sliding sleeve, and sliding sleeve and frame are fixed, and constitute being slidingly connected between supporting seat and the frame thus.

4, mill rotating shaft elevating mechanism as claimed in claim 3, it is characterized in that: described slide bar, cylinder have two groups, are arranged in the right and left of supporting seat symmetrically.

5, mill rotating shaft elevating mechanism as claimed in claim 1, it is characterized in that: described supporting seat is a sleeve concentric with rotating shaft, be fixed with rolling bearing between rotating shaft and the supporting seat inwall, the outer ring of rolling bearing and the inwall of supporting seat are fixed, inner ring and rotating shaft are fixed, and constitute thus that supporting seat connects with rotation between the rotating shaft and the axial restraint relation.

6, mill rotating shaft elevating mechanism as claimed in claim 5, it is characterized in that: the outer wall at supporting seat is surrounded by shock absorbing ring, and shock absorbing ring is fixed on the frame.

7, mill rotating shaft elevating mechanism as claimed in claim 6, it is characterized in that: fixedly the frame position of shock absorbing ring is hollow tubular, and shock absorbing ring is fixed on the hollow cylinder inwall.

8, mill rotating shaft elevating mechanism as claimed in claim 1 is characterized in that: the rotating shaft of motor direct-drive mill.