CN209007073U - A kind of slewing parts fixture for processing - Google Patents

Abstract

A kind of slewing parts fixture for processing, including bearing installation axle, part cutting ferrule, end face nut, one end of the bearing installation axle offers the mounting groove of installation part cutting ferrule, and the end outside screw of bearing installation axle is connected with end face nut；The end face nut is provided with avoid holes, and the aperture of the avoid holes is the end face outer diameter of part cutting ferrule and the average value of end face internal diameter；The utility model has the beneficial effect that the part that is effectively strained and fixed, clamping is firm, part is unlikely to deform, processing cost is low, centering precision is effectively ensured, effectively bears the reaction force tensed.

Description

A kind of slewing parts fixture for processing

Technical field

The utility model belongs to rotary part clamp for machining technical field, and in particular to a kind of slewing parts processing folder Tool.

Background technique

In the manufacturings such as Aeronautics and Astronautics, auto manufacturing, needs practical and processes a large amount of thin and long shafts part, Such slewing parts generally use the processing method of turning or grinding to be processed.When the major diameter of slewing parts is smaller When, normal turning or grinding can be carried out, but when the major diameter of slewing parts is bigger, difficulty of processing will be significant Increase.The conventional lesser slewing parts of draw ratio are using chuck and top on center lathe, using " one top of a folder " Mode carry out part and fix, then carry out following process.When the major diameter of slewing parts is bigger, in " one top of a folder " side Under the pressure effect of formula, the biggish slewing parts of draw ratio are easy to appear the bending deformation of meditation, zero after leading to processing There is the special-shaped feature between the detail of both ends slightly in part, is difficult to ensure machining accuracy.In order to improve the biggish revolution class zero of draw ratio The processing quality of part, typically now using increase follow-rest, using double lathe tools, in numerically controlled lathe use ANSYS mathematical analysis The modes such as modeling real-time compensation guarantee processing quality, or carry out the inefficient processing measure guaranteed the quality by artificial experience merely Guarantee processing quality.Although the processing quality that aforesaid way can solve the biggish slewing parts of draw ratio to a certain extent is asked Topic, but aforesaid way is there is processing efficiency is low, the higher problem of processing cost, for above-mentioned processing draw ratio biggish time When turning class part there are the problem of, the utility model discloses a kind of slewing parts fixture for processing.

Utility model content

The purpose of this utility model is to provide a kind of slewing parts fixture for processing, realize traditional one top of a folder Part fixed form improve the function of the part fixed form drawn for a folder one, have that clamping is firm, holding parts are not variable The low effect of shape, processing cost.

The utility model is achieved through the following technical solutions:

A kind of slewing parts fixture for processing, including bearing installation axle, part cutting ferrule, end face nut, the bearing peace One end of dress axis offers the mounting groove of installation part cutting ferrule, and the end outside screw of bearing installation axle is connected with end face spiral shell It is female；The end face nut is provided with avoid holes, and the aperture of the avoid holes is the end face outer diameter and end face internal diameter of part cutting ferrule Average value.

Operation principle and using method:

Part cutting ferrule is rotatablely installed in the mounting groove of one end of bearing installation axle, and part cutting ferrule is for clamping revolution class zero One end of part, part cutting ferrule is deviate from from mounting groove in order to prevent, is arranged on the periphery on the outside of the end of bearing installation axle There is the external screw thread of M42, the external screw thread on the inner headed face of end face nut on the outside of the end of corresponding shaft bearing installation axle is provided with M42's Internal screw thread, screw thread effective depth are that 14.5mm is realized end face nut thread being connected to bearing by the matching between screw thread On the outside of the end of installation axle.By rotating end face nut, pushes against end face nut by the end face of part cutting ferrule, prevent part cutting ferrule Deviate from from mounting groove.Meanwhile in order to not influence slewing parts while guaranteeing that end face nut is compressed and limited on part cutting ferrule Clamping in part cutting ferrule, offers avoid holes at the center of end face nut, and the aperture of avoid holes is the outer of part cutting ferrule The outer diameter of end face and the average value of internal diameter neither influence the clamping of slewing parts, also ensure end face nut and part cutting ferrule Contact area it is sufficiently large, can stablize push against part cutting ferrule.When using this fixture, bearing installation axle is rotatablely installed in lathe Barrel of tail stock among, keep bearing installation axle mobile to the direction far from machine chuck with the barrel of tail stock of lathe, make to turn round Class part becomes tensing clamping from holding out against clamping, effectively prevents the bending deformation of slewing parts.

In order to preferably realize the utility model, further, the part cutting ferrule is internally provided with card slot, the card The internal diameter of slot is greater than the end face internal diameter of part cutting ferrule.

Card slot is set to the inside of part cutting ferrule in a ring, and the internal diameter of card slot should be slightly bigger than the end face internal diameter of part cutting ferrule, Guarantee that slewing parts can smoothly clamping enter inside part cutting ferrule, and one end of slewing parts is clamped by folder by card slot Tightly.

In order to preferably realize the utility model, further, the part cutting ferrule be disposed with from top to bottom end face, The conical surface, periphery；It is corresponding in turn to from top to bottom in the mounting groove is corresponding and is provided with the conical surface, inner hole cylindrical surface.

The inclination angle of the conical surface on part cutting ferrule is identical as the inclination angle of the conical surface inside mounting groove, enters installation in part cutting ferrule When the inside of slot, the extruding of the conical surface on part cutting ferrule by the conical surface of the inside of mounting groove makes part cutting ferrule to a certain extent It shrinks, so that the slewing parts of the inside of part cutting ferrule be clamped.

In order to preferably realize the utility model, further, the conical surface of the mounting groove is 17 °, inner hole cylindrical surface Diameter is φ 29mm；The conical surface of the part cutting ferrule is identical as the conical surface of mounting groove, and the periphery of the part cutting ferrule is straight Diameter is 29 mm of φ, end face diameter is 31 mm of φ, end face internal diameter is 25 mm of φ, and the internal diameter of the card slot is 26 mm of φ.

In order to guarantee smooth transition and extruding between the conical surface inside the conical surface and mounting groove on part cutting ferrule, therefore, 17 ° are set by the inclination angle of the conical surface of the inside of mounting groove, the inclination angle of the conical surface on part cutting ferrule is also 17 °；In order to guarantee zero The contractive effect when conical surface of part cutting ferrule is pressurized, thus the wall thickness of part cutting ferrule answered under the premise of proof strength it is sufficiently thin, because The end face diameter of part cutting ferrule is set 31 mm of φ by this, effectively reduces the wall thickness of part cutting ferrule, increases the contraction of part cutting ferrule Effect.

In order to preferably realize the utility model, further, the bearing installation axle opens up one end of installation cavity as folder End is filled, and the other end is cylindrical end, the outer diameter for clamping end is greater than the diameter of cylindrical end, and clamps and be provided in the circumferential direction at end Spanner card slot；Spanner card slot is provided in the external circumferential of the end face nut.

After bearing installation axle is installed in the barrel of tail stock of lathe, for the ease of adjusting the position of bearing installation axle, therefore Spanner card slot is provided in the circumferential direction for clamping end of bearing installation axle, be easy to use spanner carry out bearing installation axle rotation and It installs, spanner card slot width 5mm, depth 3mm, long 10mm in bearing installation axle, size can also be according to the size of different spanners It is adjusted；Similarly, for the ease of rotating end face nut, spanner card slot, end face are provided in the external circumferential of end face nut Spanner card slot on nut is through slot form, wide 5mm, depth 3.5mm, and size can also be adjusted according to the size of different spanners It is whole.

In order to preferably realize the utility model, further, the circumferential direction of the part cutting ferrule, which is provided with, cracks, described to open Slit width 0.5mm, long 20mm；The part cutting ferrule is prepared by the spring steel of 65Mn.

It is circumferentially arranged on the periphery of part cutting ferrule to have cracking for the axial direction that part cutting ferrule is parallel at 12, it is opened at 12 Seam is by several relatively independent contraction units of the periphery framing bits of part cutting ferrule, when part cutting ferrule being made to be squeezed, shrinks effect Fruit is more preferable；Part cutting ferrule needs the deformation when being squeezed, and the reinstatement when being not under compression, therefore selects 65Mn spring steel Standby part cutting ferrule, makes part cutting ferrule have excellent deformation and recovery capability.

It further include barrel of tail stock further, one end of the barrel of tail stock is opened to preferably realize the utility model Equipped with installation cavity, the bearing installation axle is mounted in installation cavity；The bottom of the installation cavity is provided with screw avoid holes, described The other end of bearing installation axle is correspondingly arranged on threaded hole, and one end of the screw passes through screw avoid holes and protrudes into threaded hole, Gasket is provided between the screw and bearing installation axle.

Bearing installation axle, the other end and lathe tail of barrel of tail stock are rotatably equipped in the installation cavity of one end of barrel of tail stock Seat is connected with each other and moves jointly with tailstock tool；Pacified by screw the end that bearing installation axle is located at one end in installation cavity Equipped with gasket, gasket is used for the position of Limit Bearing installation axle.

In order to preferably realize the utility model, further, the excircle dimension of the gasket is 37 mm of φ, inner circle ruler Very little 12.5 mm of φ, thickness 3mm；The screw is standard soket head cap screw, and thread size is that M12 × 1.5, screw thread are effectively long Spend 18mm, screw overall length 32mm；The aperture of the screw avoid holes is 26 mm of φ, hole depth 20mm, the screw thread of the threaded hole Effective length is 25mm.

In order to preferably realize the utility model, further, also set up between the barrel of tail stock and bearing installation axle There are alignment bearing, thrust bearing and the big lantern ring being arranged between alignment bearing and thrust bearing from outside to inside, small lantern ring, institute The outer diameter for stating big lantern ring is 62 mm of φ, and the internal diameter of the installation cavity is 62 mm H7 of φ；The internal diameter of the small lantern ring is φ 30 Mm, the outer diameter of the bearing installation axle are 30 mm k7 of φ.

The inside of the installation cavity of barrel of tail stock is equipped with bearing, and bearing installation axle is rotatably equipped in the inner hole of bearing, because The reaction pulling force that slewing parts transmit is also suffered from, therefore in high-speed rotation for bearing installation axle in order to extend bearing Using the time, bearing includes the thrust bearing and alignment bearing set gradually from the inside to the outside, and thrust bearing is for bearing reaction Pulling force, alignment bearing guarantee the rotating accuracy of bearing installation axle；Meanwhile it being coaxially arranged between thrust bearing and alignment bearing big Lantern ring and small lantern ring, for the axial float of limit thrust bearing and alignment bearing, the outer diameter of big lantern ring and the internal diameter of installation cavity Between be clearance fit, the internal diameter of small lantern ring and the outer diameter of bearing installation axle are also clearance fit.

In order to preferably realize the utility model, further, the other end of the barrel of tail stock offers tailstock hole, and The bottom of the other end of barrel of tail stock is provided with threaded connection hole, location hole；The other end of the barrel of tail stock is axially disposed There is keyway.

The tailstock hole of the other end of barrel of tail stock is connected through a screw thread on hole and lathe for connecting with tailstock tool Standard accessory connection, the positioning of barrel of tail stock is carried out by location hole；Meanwhile flat key being installed in the keyway of barrel of tail stock, prevent Only relatively rotate between barrel of tail stock and tailstock tool.

The utility model mainly corresponds to CA6150 lathe and matches, and the size of the utility model can also be according to different processing The modification of the slewing parts of equipment and different size progress adaptability, it is not limited to shape involved in above scheme or attached drawing Formula.

The utility model compared with prior art, have the following advantages that and the utility model has the advantages that

(1) the utility model holds installation axle by rotating installation axle in the mounting hole of bearing installation axle, installs in bearing The mounting groove of one end of axis installs part cutting ferrule, in the card slot of the inside of part cutting ferrule setting annular, at the end of bearing installation axle Spiral shell fills the end face nut for pushing against part cutting ferrule on the outside of face；Part cutting ferrule is realized with rotating in mounting groove, part cutting ferrule To the function of the firm clamping of slewing parts, the utility model is with structure is simple, processing cost is low, rotation is flexible beneficial Effect；

(2) the utility model passes through successively installed thrust bearing and centration axis from the inside to the outside in the installation cavity of barrel of tail stock It holds, bearing installation axle is installed in the inner hole of thrust bearing and alignment bearing, installed in the inner end of bearing installation axle by screw For pushing against the gasket of the end face of pressure bearing, limit of the bearing in installation cavity is realized, bearing is avoided to take off from installation cavity Out, the limit to bearing installation axle being also achieved, rotating bearing installation axle can only without can be carried out axial movement；This reality With the novel beneficial effect that centering precision is effectively ensured, effectively bears the reaction force tensed.

(3) the utility model by barrel of tail stock close to the setting of one end of tailstock tool for connecting with tailstock tool Tailstock hole realizes the connection of barrel of tail stock and tailstock tool, and by increasing the spacing between tailstock tool and chuck, realizes Spacing between barrel of tail stock and chuck increases, and then realizes the function of tension clamping of the fixture to part；The utility model Holding parts, the on-deformable beneficial effect of part are tensed with effective.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the structural schematic diagram of part cutting ferrule；

Fig. 3 is the scheme of installation of barrel of tail stock；

Fig. 4 is the structural schematic diagram of barrel of tail stock；

Fig. 5 is the structural schematic diagram of bearing installation axle；

Fig. 6 is the structural schematic diagram of end face nut.

Wherein: 1- bearing installation axle；2- part cutting ferrule；The end face 3- nut；4- barrel of tail stock.

Specific embodiment

Embodiment 1:

A kind of slewing parts fixture for processing of the present embodiment, as shown in Figure 1, including bearing installation axle 1, part cutting ferrule 2, end face nut 3, one end of the bearing installation axle 1 offer the mounting groove of installation part cutting ferrule 2, and bearing installation axle 1 End outside screw is connected with end face nut 3；The end face nut 3 is provided with avoid holes, and the aperture of the avoid holes is part The end face outer diameter of cutting ferrule 2 and the average value of end face internal diameter.

The present embodiment corresponds to the matching of CA6150 lathe and uses, and traditional CA6150 lathe is by being installed at tail stock The top cooperation between lathe chuck, realize the clamping to one top of the one of slewing parts folder；Now by original top tip part Divide and replace with this fixture, bearing installation axle 1 is rotatablely installed the one end of bearing installation axle 1 far from tail stock at tail stock Mounting groove is offered, part cutting ferrule 2 is installed in mounting groove, part cutting ferrule 2 clamps one end of slewing parts for clamping, together When the end face nut 3 that is surely installed on by spiral shell on the outside of the end of bearing installation axle part cutting ferrule 2 is subjected to compression limit, prevent zero Part cutting ferrule 2 is deviate from from mounting groove.Simultaneously in order to avoid being interfered between end face nut 3 and slewing parts, therefore holding Avoid holes are additionally provided at threaded hole at the end face center of face nut 3, the aperture of avoid holes is the end face outer diameter of part cutting ferrule 2 It effectively prevents holding while guaranteeing the contact surface area of part cutting ferrule 2 and end face nut 3 with the average value of end face internal diameter Interference between face nut 3 and slewing parts occurs.

After slewing parts clamp, by the operating stick on operation tail stock, make the tailstock of CA6150 towards far Direction from chuck is mobile, and part cutting ferrule 2 is collectively faced towards with tailstock far from chuck under the drive of bearing installation axle 1 at this time Direction is mobile, and one end of slewing parts is effectively tensed, and cooperates with lathe chuck, forms the clamping side that a folder one is drawn Formula effectively avoids part from bending in process.

Embodiment 2:

The present embodiment advanced optimizes on the basis of embodiment 1, as depicted in figs. 1 and 2, the part cutting ferrule 2 It is internally provided with card slot, the internal diameter of the card slot is greater than the end face internal diameter of part cutting ferrule 2；The part cutting ferrule 2 from top to bottom according to It is secondary to be provided with end face, the conical surface, periphery；It is corresponding in turn to from top to bottom in the mounting groove is corresponding and is provided with the conical surface, inner hole cylinder Face；The conical surface of the mounting groove is 17 °, the diameter on inner hole cylindrical surface is 29 mm of φ；The conical surface of the part cutting ferrule 2 and installation The conical surface of slot is identical, and the diameter of the periphery of the part cutting ferrule 2 is 29 mm of φ, end face diameter is 31 mm of φ, in end face Diameter is 25 mm of φ, and the internal diameter of the card slot is 26 mm of φ.

Card slot is used to be clamped one end of slewing parts, realizes the clamping to slewing parts, in order to guarantee to turn round class zero Part smoothly installs the inside into part cutting ferrule 2, therefore card slot is interior through should be slightly bigger than the end face internal diameter of part cutting ferrule 2.

The conical surface on part cutting ferrule 2 is identical as the inclination angle of the conical surface of the inside of mounting groove, and two conical surfaces are mutually matched extruding, When part cutting ferrule 2 enters the inside of mounting groove, mutual extrusion between the conical surface is that part cutting ferrule 2 shrinks and clamps revolution class zero Part；In order to enhance the contractive effect of part cutting ferrule 2, therefore the wall thickness of part cutting ferrule 2 should not be too large, and otherwise contractive effect is unknown It is aobvious, easily cause clamping unstable；The wall thickness of part cutting ferrule 2 is also unsuitable excessively thin, and otherwise contraction deformation is excessive, easily causes part cutting ferrule 2 It deforms and can not restore.

The other parts of the present embodiment are same as Example 1, and so it will not be repeated.

Embodiment 3:

The present embodiment advanced optimizes on the basis of above-described embodiment 1 or 2, the circumferential setting of the part cutting ferrule 2 Have and cracks, the wide 0.5mm that cracks, long 20mm；The part cutting ferrule 2 is prepared by the spring steel of 65Mn.

If 2 fruit of part cutting ferrule is designed as the revolving structure of monoblock type, the outer wall of part cutting ferrule 2 is integral form, although Intensity is relatively high, but shrinks more difficulty, and be not easy to restore after deformation.

Therefore, in order to enhance contraction and the restorability of part cutting ferrule 2, part cutting ferrule 2 is prepared using 65Mn spring steel, together When be provided with and crack in the circumferential direction of part cutting ferrule 2, the width and length to crack can carry out adaptability tune according to different clamping conditions It is whole.

The other parts of the present embodiment are identical as above-described embodiment 1 or 2, and so it will not be repeated.

Embodiment 4:

The present embodiment advanced optimizes on the basis of above-described embodiment any one of 1-3, as shown in Figure 5 and Figure 6, described One end that bearing installation axle 1 opens up installation cavity is to clamp end, and the other end is cylindrical end, and the outer diameter for clamping end is greater than column The diameter at end, and clamp and be provided with spanner card slot in the circumferential direction at end；Spanner card is provided in the external circumferential of the end face nut 3 Slot, the quantity of spanner card slot are 6.

Because bearing installation axle 1 and end face nut 3 are after the installation is completed, since position of the slewing parts to it limits, When therefore needing the position of rolling bearing installation axle 1 and end face nut 3, very not using common external nip rotation mode Just, it therefore in the circumferential direction for clamping end of bearing installation axle 1 is provided with spanner card slot, is set in the external circumferential of end face nut 3 It is equipped with spanner card slot, by the way that spanner to be connected in spanner card slot, the convenient of bearing installation axle 1 and end face nut 3 can be carried out Adjustment.

The other parts of the present embodiment are identical as any one of above-described embodiment 1-3, and so it will not be repeated.

Embodiment 5:

The present embodiment advanced optimizes on the basis of above-described embodiment any one of 1-4, as shown in figure 3, further including tail Cover for seat cylinder 4, one end of the barrel of tail stock offer installation cavity, and the bearing installation axle 1 is mounted in installation cavity；The installation The bottom of chamber is provided with screw avoid holes, and the other end of the bearing installation axle 1 is correspondingly arranged on threaded hole, and the one of the screw End is across screw avoid holes and protrudes into threaded hole, is provided with gasket between the screw and bearing installation axle 1；Outside the gasket Circle is having a size of 37 mm of φ, inner circle size φ 12.5 mm, thickness 3mm；The screw is standard soket head cap screw, and thread size For M12 × 1.5, screw thread effective length 18mm, screw overall length 32mm；The aperture of the screw avoid holes is 26 mm of φ, and hole depth is 20mm, the screw thread effective length of the threaded hole are 25mm.

The other parts of the present embodiment are identical as any one of above-described embodiment 1-4, and so it will not be repeated.

Embodiment 6:

The present embodiment advanced optimizes on the basis of above-described embodiment any one of 1-5, the barrel of tail stock 4 and bearing It is additionally provided with alignment bearing, thrust bearing between installation axle 1 and is arranged between alignment bearing and thrust bearing from outside to inside Big lantern ring, small lantern ring, the outer diameter of the big lantern ring is 62 mm of φ, and the internal diameter of the installation cavity is 62 mm H7 of φ；It is described small The internal diameter of lantern ring is 30 mm of φ, and the outer diameter of the bearing installation axle 1 is 30 mm k7 of φ.

Large and small lantern ring separates the adjacent end face of thrust bearing and alignment bearing, avoids thrust bearing and centration axis Phase mutual friction between adjacent face is held, extend bearing uses the time, while large and small lantern ring is to thrust bearing and alignment bearing Inside and outside circle carried out axially position, avoid the axial float of thrust bearing and alignment bearing.

Meanwhile the convenient installation in order to guarantee large and small lantern ring, it will be arranged between the outer diameter of big lantern ring and the internal diameter of installation cavity For clearance fit, clearance fit is set by the outer diameter of the internal diameter of small lantern ring and bearing installation axle 1.

The other parts of the present embodiment are identical as any one of above-described embodiment 1-5, and so it will not be repeated.

Embodiment 7:

The present embodiment advanced optimizes on the basis of above-described embodiment any one of 1-6, as shown in figure 4, the tailstock The other end of sleeve 4 offers tailstock hole, and the bottom of the other end of barrel of tail stock 4 is provided with threaded connection hole, location hole；Institute The other end for stating barrel of tail stock 4 axially disposed has keyway.

Barrel of tail stock 4 is connect by tailstock hole and keyway with tail stock, and is prevented between barrel of tail stock 4 and tail stock It relatively rotates；By inserting bolt in threaded connection hole, by bolt by the standard accessory on barrel of tail stock 4 and tail stock Connection, and by inserting positioning pin in location hole, it realizes the positioning to barrel of tail stock 4, prevents barrel of tail stock 4 from position occurs inclined Tiltedly.

The other parts of the present embodiment are identical as any one of above-described embodiment 1-6, and so it will not be repeated.

The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within Within the scope of.

Claims (8)

1. a kind of slewing parts fixture for processing, which is characterized in that including bearing installation axle (1), part cutting ferrule (2), end face Nut (3), one end of the bearing installation axle (1) offer the mounting groove of installation part cutting ferrule (2), and bearing installation axle (1) End outside screw be connected with end face nut (3)；The end face nut (3) is provided with avoid holes, the aperture of the avoid holes For the end face outer diameter of part cutting ferrule (2) and the average value of end face internal diameter；The part cutting ferrule (2) is internally provided with card slot, institute The internal diameter for stating card slot is greater than the end face internal diameter of part cutting ferrule (2)；The part cutting ferrule (2) be disposed with from top to bottom end face, The conical surface, periphery；It is corresponding in turn to from top to bottom in the mounting groove is corresponding and is provided with the conical surface, inner hole cylindrical surface.

2. a kind of slewing parts fixture for processing according to claim 1, which is characterized in that the conical surface of the mounting groove Diameter for 17 °, inner hole cylindrical surface is φ 29mm；The conical surface of the part cutting ferrule (2) is identical as the conical surface of mounting groove and described The diameter of the periphery of part cutting ferrule (2) is φ 29mm, end face diameter is φ 31mm, end face internal diameter is φ 25mm, the card slot Internal diameter be φ 26mm.

3. a kind of slewing parts fixture for processing according to claim 1, which is characterized in that the bearing installation axle (1) one end for opening up installation cavity is to clamp end, and the other end is cylindrical end, and the outer diameter for clamping end is greater than the straight of cylindrical end Diameter, and clamp and be provided with spanner card slot in the circumferential direction at end；Spanner card slot is provided in the external circumferential of the end face nut.

4. a kind of slewing parts fixture for processing according to claim 1-3, which is characterized in that the part The circumferential direction of cutting ferrule (2), which is provided with, cracks, the wide 0.5mm that cracks, long 20mm；The part cutting ferrule (2) by 65Mn spring steel It is prepared.

5. a kind of slewing parts fixture for processing according to claim 1, which is characterized in that further include barrel of tail stock (4), one end of the barrel of tail stock offers installation cavity, and the bearing installation axle (1) is mounted in installation cavity；The installation cavity Bottom be provided with screw avoid holes, the other end of the bearing installation axle (1) is correspondingly arranged on threaded hole, the one of the screw End is across screw avoid holes and protrudes into threaded hole, is provided with gasket between the screw and bearing installation axle (1).

6. a kind of slewing parts fixture for processing according to claim 5, which is characterized in that the outer circle ruler of the gasket Very little is φ 37, inner circle size φ 12.5mm, thickness 3mm；The screw be standard soket head cap screw, and thread size be M12 × 1.5, screw thread effective length 18mm, screw overall length 32mm；The aperture of the screw avoid holes is φ 26mm, hole depth 20mm, institute The screw thread effective length for stating threaded hole is 25mm.

7. a kind of slewing parts fixture for processing according to claim 6, which is characterized in that the barrel of tail stock (4) It is additionally provided with alignment bearing, thrust bearing between bearing installation axle (1) and alignment bearing and thrust are set from outside to inside Big lantern ring, small lantern ring between bearing, the outer diameter of the big lantern ring are φ 62mm, and the internal diameter of the installation cavity is φ 62mmH7； The internal diameter of the small lantern ring is φ 30mm, and the outer diameter of the bearing installation axle (1) is φ 30mmk7.

8. a kind of slewing parts fixture for processing according to claim 7, which is characterized in that the barrel of tail stock (4) The other end offer tailstock hole, and the bottom of the other end of barrel of tail stock (4) is provided with threaded connection hole, location hole；It is described The other end of barrel of tail stock (4) is axially disposed keyway.