CN205968360U - Transition disc that horizontal lathe clamping thin wall bearing lasso was used - Google Patents

Abstract

The utility model provides a transition disc that horizontal lathe clamping thin wall bearing lasso was used, an anchor clamps that horizontal lathe clamping work piece usefulness in the machining field is related to, including a ring disk body, ring disk body has less inner circumference of internal diameter and internal diameter the 2nd great inner circumference, a inner circumference and the 2nd inner circumference form between the two one with ring disk body's end surface parallel's step face, be used for on holding a terminal surface treating clamping bearing ring, the last disconnection mouth that is equipped with of ring disk body, so that the 2nd inner circumference can hug closely on the circumference outer wall of treating clamping bearing ring behind the outer periphery of horizontal lathe's jack catch retaining ring shape disk body, the 2nd inner circumference's axial height is lighter than the height of treating clamping bearing ring. The utility model discloses a transition disc and bearing inner race cooperate, can strengthen bearing inner race's rigidity, avoid the clamping to warp.

Description

A kind of transition disc of horizontal lathe clamping thin-wall bearing ferrule

Technical field

This utility model is related to the fixture of horizontal lathe clamping workpiece in field of machining, specially a kind of Horizontal type cart The transition disc of bed clamping thin-wall bearing ferrule.

Background technology

The processing of bearing ring is generally divided into following process：1st, lasso forging molding；2nd, soft Vehicle Processing；3rd, Re Chu Reason；4th, grinding；5th, superfinishing is ground.For machined surfaces such as the chamfering on bearing ring, grinding wheel grooves（It is not work surface）, bearing Main frame does not have too high required precision to them yet, and does not have the method being preferably processed after heat treatment yet, so For plain bearing part, these surfaces are usually without processing after heat treatment.But for some clear to bearing itself Cleanliness has the bearing of strict demand, is not allow bearing in itself with the presence of oxide skin.

Along with the development of hard driving skills art, the chamfering of piece surface, grinding wheel groove are commonly used to be used after corase grind The method of the hard car of carbide-tipped lathe tool is processed.Horizontal lathe typically adopts four paws or scroll chuck clamping to position workpiece, should It is located through claw point several with workpiece to radially contact with, by applying certain radial force come clamping position workpiece in contact point. Because bearing partss are usually annular workpieces, radial rigidity is poor, after the radial force by three or four points, radially must Larger deformation so can be produced, the deformation producing for thin-wall bearing is bigger.This causes larger to the workpiece accuracy after processing Impact, also often thus result in a large amount of waste products.

Utility model content

For above-mentioned problem, the utility model proposes one kind is applied to horizontal lathe turning thin-wall bearing ring A kind of transition disc, this transition disc is coordinated with bearing outer ring, to strengthen the rigidity of bearing outer ring, it is to avoid clamping deformation.

For achieving the above object, the technical solution of the utility model is：A kind of horizontal lathe clamping thin-wall bearing ferrule is used Transition disc, including an annular disk body, annular disk body have less first inner peripheral surface of internal diameter and internal diameter larger second Inner peripheral surface, the first inner peripheral surface and the second inner peripheral surface form the platform that an end face with annular disk body is paralleled between the two Terrace, in order to support on an end face treating clamping bearing ring, annular disk body is provided with a disconnection mouth, so that horizontal lathe Claw clamping annular disk body outer circumference surface after the second inner peripheral surface can be close to the outer circumferential walls treating clamping bearing ring On, the axial height of the second inner peripheral surface is less than the height treating clamping bearing ring.

Further, the difference in height of the axial height of described second inner peripheral surface and the height treating clamping bearing ring For 4 ~ 10mm.

The described A/F disconnecting mouth is 3 ~ 10mm.

Described second inner peripheral surface of annular disk body and the axiality of its outer circumference surface are less than or equal to 0.03mm.

Beneficial effect：Horizontal lathe claw is applied to the several clampings on axle sleeve outer ring by this utility model using transition disc The radial force of point is transformed to transition disc and contacts radial force to the face of axle sleeve outer ring, increases the force surface to axle sleeve outer ring, thus The rigidity of bearing outer ring can effectively be strengthened, effectively prevent impact bearing outer ring being caused due to clamping deformation, simultaneously by In the design disconnecting mouth and each clamping face, substantially increase clamping efficiency and the crudy of bearing outer ring.

Brief description

Fig. 1 is the cross-sectional view of transition disc of the present utility model；

Fig. 2 is the right view of Fig. 1；

Fig. 3 is transition disc and the clamping schematic diagram treating clamping bearing ring；

Fig. 4 is the partial enlarged drawing at A in Fig. 3；

In figure is labeled as：1st, step surface, the 2, second inner peripheral surface, 3, datum end face, 4, outer circumference surface, the 5, first inner periphery Face, 6, annular disk body, 7, disconnect mouth, 8, treat clamping bearing ring, 9, chamfering, 10, grinding wheel groove.

Specific embodiment

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of transition disc of horizontal lathe clamping thin-wall bearing ferrule, including one Individual annular disk body 6, annular disk body 6 has less first inner peripheral surface 5 of internal diameter and larger the second inner peripheral surface 2 of internal diameter, the One inner peripheral surface 5 and the second inner peripheral surface 2 form the step surface 1 that an end face with annular disk body 6 is paralleled between the two, use To support on an end face treating clamping bearing ring 8, the internal diameter size of the second inner peripheral surface 2 is slightly larger than treats clamping bearing holder (housing, cover) The outside dimension of circle 8, is easy to clamping, is provided with a disconnection mouth 7 simultaneously on annular disk body 6, so that the claw clamping of horizontal lathe After the outer circumference surface 4 of annular disk body 6, the second inner peripheral surface 2 can be close in the outer circumferential walls treating clamping bearing ring 8.

The axial height of the second inner peripheral surface 2 is less than the height treating clamping bearing ring 8, to ensure falling on bearing outer ring Angle has enough spaces to be processed, and both differences in height can be set to 4 ~ 10mm.

The parallel error of step surface 1 and the datum end face 3 of annular disk body 6 will be got well, to ensure turning axially position precision.

Second inner peripheral surface 2 of described annular disk body 6 is less than or equal to 0.03mm with its axiality both outer circumference surface 4, To ensure the turning radial positioning precision of workpiece.

The A/F disconnecting mouth 7 is 3 ~ 10mm, and this breach can ensure that transition disc and the outer circumferential walls of bearing outer ring exist After claw clamping, laminating is tight.

In the course of processing, first transition disc chuck is stuck on lathe, not clamping, then workpiece（As bearing outer ring）Dress Enter in transition disc, clamping transition disc, now clamping complete.

Taking bearing NU 1864 as a example, excircle dimension Φ 400mm, height dimension 38mm, chamfer machining size is not less than 3mm. After the corase grind processing of this bearing outer ring, excircle dimension controls in Φ 400.35 ± 0.02mm.Lower mask body introduces supporting mistake Cross the processing request of disk：

1st, the second inner peripheral surface 2 of transition disc, it is coordinated with bearing outer ring cylindrical employing gap, and its internal diameter size is machined to 400.40 ± 0.02mm, the second inner peripheral surface 2 is controlled in 0.03mm with the axiality of outer circumference surface 4；

2nd, axial height size h of the second inner peripheral surface 2 should be less than bearing outer ring height dimension H, and does not affect outside bearing Enclose the processing of outer rounded corner, size h should be less than 38-3=35mm, is the suitable space of allowance, and h takes 30mm, and ensure step surface 1 It is less than 0.03 with datum end face 3 parallel error；

3rd, excircle dimension D, axial width dimension H and the inner circle of transition disc（The i.e. internal diameter of the first inner peripheral surface 5）Size d does not have There is accurate requirement, main consideration ensures rigidity, and will use material less as far as possible.Take D=450mm, H=75mm, d=380mm；

4th, process after transition disc by requirements above, wire cutting disconnects mouth 7, and opening size takes 5mm；

5th, using transition disc processing NU 1864 bearing outer ring processing, before and after processing, outer ring does not deform substantially, Achieve good effect.

Claims (4)

1. a kind of transition disc of horizontal lathe clamping thin-wall bearing ferrule it is characterised in that：Including an annular disk body（6）, Annular disk body（6）There is less first inner peripheral surface of internal diameter（5）Second inner peripheral surface larger with internal diameter（2）, the first inner circle Side face（5）With the second inner peripheral surface（2）Form one and annular disk body between the two（6）The parallel step surface of end face（1）, Treating clamping bearing ring in order to support（8）An end face on, annular disk body（6）It is provided with a disconnection mouth（7）, so that horizontal The claw clamping annular disk body of lathe（6）Outer circumference surface（4）Second inner peripheral surface afterwards（2）Can be close to and treat clamping bearing holder (housing, cover) Circle（8）Outer circumferential walls on, the second inner peripheral surface（2）Axial height be less than treat clamping bearing ring（8）Height.

2. as claimed in claim 1 a kind of transition disc of horizontal lathe clamping thin-wall bearing ferrule it is characterised in that：Described Second inner peripheral surface（2）Axial height with treat clamping bearing ring（8）Both height difference in height be 4 ~ 10mm.

3. as claimed in claim 1 a kind of transition disc of horizontal lathe clamping thin-wall bearing ferrule it is characterised in that：Described Disconnect mouth（7）A/F be 3 ~ 10mm.

4. as claimed in claim 1 a kind of transition disc of horizontal lathe clamping thin-wall bearing ferrule it is characterised in that：Described Annular disk body（6）The second inner peripheral surface（2）With its outer circumference surface（4）Both axialities are less than or equal to 0.03mm.