CN206122710U - Bi -polar main shaft - Google Patents

Abstract

The utility model discloses a bi -polar main shaft, including the clamping part, the cover is equipped with the piston on the clamping part, still includes the solid of revolution, and solid of revolution cover is established and is sealed on the clamping part and with the piston, is provided with first bearing and second bearing on the shaft shoulder of solid of revolution both sides respectively, still includes the headstock, is provided with the clamp ring between the headstock and the solid of revolution. This novel bi -polar main shaft utility model sets up two main shafts, and holding workpiece has simultaneously improved the machining precision and the rotational speed of machine, has reduced vibration and noise, remedies some shortcomings and deficiencies parts of air supporting main shaft commonly used, further promotes the production efficiency and the processingquality of machine. This novel both ends press from both sides tight main shaft main advantages, bear the weight of the dynamic height promptly, problem that rigidity is strong.

Description

Both-end main shaft

Technical field

This utility model is related to mechanical automation production field of machines, more particularly to one kind is used for high-precision numerical control lathe The both-end main shaft of industry.

Background technology

At present, Ultra-precision Turning has become the trend of modern production development, and of China's high-technology field Important ingredient.Precision machined high target, defines the high request to precise machining equipment, has promoted its progress, The progress of precision optical machinery in turn is the essential condition that Precision Machining can be realized again.

As the development of science and technology, the demand of various machine tools are more and more, machine tool required precision is got over Come higher.The demand of the development of current science and technology cannot be met by traditional manual or automanual operational approach, for car, In the precision machining processes of parts, the stationarity and spindle abrasion degree of main shaft rotation determine zero to the machine tools such as milling, mill The precise processing precision of part.The stationarity of machine tool main shaft rotation of the prior art is deteriorated, the Precision Machining of parts Precision is difficult to reach requirement, and conforming product rate can decline therewith, the problems such as manufacturing cost also further can increase.

Utility model content

The purpose of this utility model is to provide a kind of both-end main shaft, can solve the problem that the precise processing precision of parts is difficult to reach To the technical problem for requiring.

To achieve these goals, this utility model provides a kind of both-end main shaft, including clamping part, is arranged on clamping part There is piston, also including revolving body, revolving body is arranged on the holder portion and closes piston, is respectively provided with the shaft shoulder of revolving body both sides There are clutch shaft bearing and second bearing, also including main spindle box, between main spindle box and revolving body, be provided with hold-down ring.

Preferably, piston includes adjacent first piston and second piston.

Preferably, revolving body includes that the first revolving body and the second revolving body, the first revolving body and the second revolving body are set in On clamping part and it is arranged on the both sides of first piston and second piston first piston and second piston is closed.

Preferably, clamping part is connected with piston thread.

Preferably, first bearing seat is provided between main spindle box and clutch shaft bearing.

Preferably, second bearing seat is provided between main spindle box and second bearing.

Preferably, hold-down ring is wedge shape.

Preferably, clutch shaft bearing and second bearing are single-bearing.

Preferably, clutch shaft bearing and second bearing are high-speed bearing.

Preferably, clamping part is made using GCr15.

This novel double end main shaft utility model arranges two main shafts, while clamping workpiece, improves the machining accuracy of machine And rotating speed, reduce vibration and noise, in place of making up some shortcomings and deficiencies of conventional air-floating main shaft, further hoisting machine Production efficiency and crudy.This new two ends clamping spindle major advantage, i.e. high capacity, the strong problem of rigidity.

Description of the drawings

Fig. 1 is a kind of structural representation of the both-end main shaft of embodiment that this utility model is provided.

Description of reference numerals：

1- clamping parts；21- first pistons；22- second pistons；The first revolving bodies of 31-；The second revolving bodies of 32-；41- first Bearing；42- second bearings；5- main spindle boxes；6- hold-down rings；71- first bearing seats；72- second bearing seats.

Specific embodiment

With reference to the accompanying drawings and examples this utility model is further illustrated.But the purposes of these exemplary embodiments and Purpose is only used for enumerating this utility model, not constitutes any type of any limit to real protection scope of the present utility model It is fixed, it is more non-that protection domain of the present utility model is confined to into this.

Some nouns of locality are defined in this utility model, in the case where not being specified to the contrary, the orientation for being used Word such as " upper and lower, left and right " refers to what the both-end main shaft that this utility model is provided was defined under normal usage, and and accompanying drawing Shown in direction up and down it is consistent." inside and outside " is referred to relative to inside and outside each parts profile itself.These nouns of locality are Adopt for the ease of understanding, thus do not constitute the restriction to this utility model protection domain.

In this utility model, when parts are referred to as " being fixed on " another parts, it can be directly at another On parts, or can also there are parts placed in the middle.When a parts are considered as " connection " another parts, it Another parts can be directly to or parts placed in the middle are may be simultaneously present.When a parts are considered as " being arranged at " another parts, it can be set directly on another parts or may be simultaneously present zero placed in the middle Part.

Suitably with reference to shown in Fig. 1, the both-end main shaft of the basic embodiment that this utility model is provided includes clamping part 1, clamps Piston is arranged with portion 1, also including revolving body, revolving body is set on clamping part 1 and closes piston, the revolving body both sides shaft shoulder On be respectively arranged with clutch shaft bearing 41 and second bearing 42, both-end main shaft also includes main spindle box 5, between main spindle box 5 and revolving body It is provided with hold-down ring 6.Hold-down ring 6 is wedge shape.

Clutch shaft bearing 41 and second bearing 42 are high-speed bearing.The high-speed bearing axle both sides single-bearing, effectively reduces The axial space of axle.The release of this axle is directly entered inside main shaft by gas, clamps the elongation by die springs, so not only Ease of assembly personnel install, and are also convenient for maintenance, are embodied everywhere the design concept and needs of hommization.The main shaft comes from outside See, mechanism is simply beautiful, structure is very distinct, on the premise of function and technical specification is realized, accomplished attractive in appearanceization of product, More advantage can be increased for product.

Piston includes adjacent first piston 21 and second piston 22.Revolving body includes the first revolving body 31 and the second revolution Body 32, the first revolving body 31 and the second revolving body 32 are set on clamping part 1 and are arranged on first piston 21 and second piston 22 Both sides, first piston 21 and second piston 22 are closed.As rotary body is made up of two parts, i.e., rotary body divides two parts, Conveniently can dismantle, so that the main shaft can easily do dynamic balancing.Any revolving body enclose rotate about the axis thereof when, due to phase Centrifugal force is produced for the non-uniform mass of axis.This uneven centrifugal action can cause on rotor bearing and shake It is dynamic, produce noise and accelerate bearing wear, so that having a strong impact on performance and the life-span of product.After doing dynamic balance treatment, can Largely to improve the performance of axle

First bearing seat 71 is provided between main spindle box 5 and clutch shaft bearing 41.Arrange between main spindle box 5 and second bearing 42 There is second bearing seat 72.

The selection GCr15 of 1 grade critical component material of clamping part.The material that the clamping part 1 of the two ends clamping spindle is adopted is GCr15, this material are a kind of the most frequently used high chromium bearing steels, with high quenching degree, can obtain height and uniform after heat treatment Hardness, wearability are strong, and contact fatigue strength is high, has good dimensional stability and corrosion stability.

The main shaft adopts high-speed bearing, can effectively improve rotating speed, and clamping part 1 is connected with piston thread, piston driving The movement of chuck.Release process, i.e., when there is ambient atmos to be entered by bearing block, clamping ring is moved to the left, at this moment clamping ring On the left of inclined-plane and revolving body, inclined-plane is adjacent to, and subsequently ambient atmos are entered in main shaft body by main spindle box all the way in addition, promote piston To two side shiftings, the movement of piston driving chuck, realize that main shaft unclamps；The elongation of clamping process, i.e. clamping ring by spring, will Clamping ring moves right, using the deflection of the die springs between on the left of piston and revolving body and on the right side of piston and revolving body, Two pistons of a rotating body are moved inward, clamping process is realized.

The novel bearing main shaft can not only effectively improve the machining accuracy of product, while decreasing pollution and noise. There is small volume, rotating speed is high, the high technical advantage of stability, can extensively using the every field of machinery industry.The main shaft can For on high-precision numerical control lathe, improving the quality of product, and life-span of cutter can also be extended, ensure lathe The work of stability and high efficiency rate.

The novel bearing main shaft, using high-speed bearing, not only effectively reduces the size of itself and takes up an area space, and Substantially increase running efficiency.Along with can quickly start and stop, Quick-clamped even more substantially increases its performance.Because High-speed bearing is adopted, so frictional resistance very little, further improves its rotating speed.Two ends clamping spindle adopts high-speed bearing, Cleannes are high, free from environmental pollution, and noise and vibration are little, more meet the developing direction in China's state-of-the-art technology field.

The sequencing of above example only for ease of description, does not represent the quality of embodiment.

Finally it should be noted that：Above example only to illustrate the technical solution of the utility model, rather than a limitation； Although being described in detail to this utility model with reference to the foregoing embodiments, it will be understood by those within the art that： Which still can be modified to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc. With replacement；And these modifications or replacement, do not make the essence of appropriate technical solution depart from each embodiment technology of this utility model The spirit and scope of scheme.

Claims (10)

1. a kind of both-end main shaft, it is characterised in that including clamping part (1), be arranged with piston on the clamping part (1), also include Revolving body, the revolving body are set on clamping part (1) and close the piston, are set on the shaft shoulder of the revolving body both sides respectively Clutch shaft bearing (41) and second bearing (42) are equipped with, also including main spindle box (5), the main spindle box (5) is arranged and revolving body between There is hold-down ring (6).

2. both-end main shaft according to claim 1, it is characterised in that the piston include adjacent first piston (21) and Second piston (22).

3. both-end main shaft according to claim 2, it is characterised in that the revolving body includes the first revolving body (31) and Two-revolution body (32), first revolving body (31) and second revolving body (32) are set on clamping part (1) and are arranged on The both sides of the first piston (21) and the second piston (22) are by the first piston (21) and the second piston (22) Closing.

4. both-end main shaft according to claim 1, it is characterised in that the clamping part (1) is connected with the piston thread.

5. both-end main shaft according to claim 4, it is characterised in that the main spindle box (5) and the clutch shaft bearing (41) Between be provided with first bearing seat (71).

6. both-end main shaft according to claim 1, it is characterised in that the main spindle box (5) and the second bearing (42) Between be provided with second bearing seat (72).

7. both-end main shaft according to claim 1, it is characterised in that the hold-down ring (6) is wedge shape.

8. both-end main shaft according to claim 1, it is characterised in that the clutch shaft bearing (41) and the second bearing (42) it is single-bearing.

9. both-end main shaft according to claim 6, it is characterised in that the clutch shaft bearing (41) and the second bearing (42) it is high-speed bearing.

10. both-end main shaft according to claim 7, it is characterised in that the clamping part (1) is made using GCr15.