CN207387120U - A kind of the processing of sphere fixture - Google Patents

Abstract

The utility model discloses a kind of the processing of sphere fixtures, sphere Excircle machining available for ball valve, its structure includes body and thimble etc., the clamping jaw of multiple circumference enclosing is mainly equipped in bodies top, each clamping jaw top inner wall is equipped with tapered slope, and the tapered slope circumference of multiple clamping jaws is enclosed taper hole, the top of multiple clamping jaws is packed into limbers simultaneously, and thimble top is set to tapered end, which, which heads into taper hole, just can force multiple clamping jaw tops to be opened in limbers, and then fixed sphere；Therefore, the clamp for machining for being fixed with sphere need to be only mounted on lathe spindle with regard to the roughing that can complete sphere outer circle and without cutting press polish processing, the entire Excircle machining of sphere just can once complete processing polished process without transfer, be scratched so as to avoid collision；This processing of sphere fixture also has many advantages, such as simplified the processing of sphere process, shortens the process-cycle, improve the processing of sphere quality, mitigate labor strength, reduce production cost.

Description

A kind of the processing of sphere fixture

Technical field

The utility model is related to a kind of clamp for machining, in particular to a kind of the processing of sphere fixtures.

Background technology

Sphere is that one of most important spare and accessory parts of ball valve, circularity, surface roughness, the machining dimension precision of sphere etc. will Element will all directly affect leakproofness, intensity, wearability and service life of ball valve product etc., therefore to the processing of sphere technique It is it is required that very strict.Sphere used in ball valve is process by hollow copper bar at present, it is necessary to use in the process Sphere outer circle roughing is first carried out to platform process equipment, then carries out outer circle finishing, finally by being manually processed by shot blasting, so that Spherome surface roughness meets requirement.But this technique processing sphere process is various, the process-cycle is longer, per pass work Also the collision that semi-finished product sphere can be increased between sequence during loading and unloading scratches, and seriously affects spherome surface quality, and manually Polishing can also influence sphere circularity, and hand labor intensity is big, of high cost.

The content of the invention

The defects of the technical problem to be solved by the utility model is to overcome the prior art and one kind is provided and is exclusively used in ball Body clamps, and makes sphere that need not shift the processing of sphere fixture that just can once complete processing polished process, and this fixture also has Simplify the processing of sphere process, shorten the process-cycle, the collision of the processing of sphere process is avoided to scratch, improve the processing of sphere quality, subtract Light labor strength reduces the advantages that production cost.

The technical issues of the utility model, is achieved through the following technical solutions：

A kind of the processing of sphere fixture clamps processing suitable for the sphere with limbers, including body and is movably arranged on this In vivo thimble, the bodies top are equipped with the clamping jaw that multiple circumference enclose, and it is oblique that each clamping jaw top inner wall is equipped with taper Face, the tapered slope circumference of multiple clamping jaws are enclosed taper hole, and the top of multiple clamping jaws is packed into limbers simultaneously；The top Pin top is set to tapered end, which heads into the taper hole and multiple clamping jaw tops is forced to be opened in limbers and fix sphere.

Multiple clamping jaw tops are enclosed cylindrical end, and the outer diameter of the cylindrical end is less than the aperture of limbers.

Be equipped in the body axially through mounting hole, the top of the mounting hole is enclosed for multiple clamping jaw circumference Taper hole, the thimble is from bottom to top packed into mounting hole.

Interior concave ring groove is equipped in the mounting hole, is equipped in the interior concave ring groove and is embedded in fixed sealing ring, and the sealing Dynamic sealing contact is enclosed on thimble.

Shoulder in positioning is equipped in the mounting hole, is accordingly equipped on thimble outer circumference surface and positions outer shoulder, outside the positioning Shoulder grafting touches shoulder in positioning, and positioning thimble is from bottom to top packed into the depth in mounting hole.

The cone angle gradient of the thimble tapered end is identical with the tapered slope gradient in body taper hole.

There are four the clamping jaw tools, and the grooving of separation, the top of each clamping jaw are equipped between every two neighboring clamping jaw Energy elasticity is flared out.

The body bottom portion outer circumference surface is equipped with an outer shoulder of circle, which, which is equipped with, is fixed on sinking on lathe spindle Hole.

The thimble bottom is equipped with the thread spindle being mounted on lathe spindle.

Compared with prior art, the utility model major design is a by body and is movably arranged on intrinsic thimble The clamp for machining collectively formed, the bodies top are equipped with the clamping jaw that multiple circumference enclose, and each clamping jaw top inner wall is equipped with cone Shape inclined-plane, the tapered slope circumference of multiple clamping jaws are enclosed taper hole, and the top of multiple clamping jaws is packed into limbers simultaneously, and is pushed up Pin top is set to tapered end, which heads into taper hole with regard to multiple clamping jaw tops can be forced to be opened in limbers, and then fixed sphere； Therefore, the clamp for machining for being fixed with sphere need to be only mounted on lathe spindle and the roughing that can complete sphere outer circle and nothing is cut Press polish processing is cut, the entire Excircle machining of sphere just can once complete processing polished process without transfer, so as to avoid collision It scratches；This processing of sphere fixture, which also has, to be simplified the processing of sphere process, shortens the process-cycle, improve the processing of sphere quality, subtract Light labor strength reduces the advantages that production cost.

Description of the drawings

Fig. 1 is the schematic cross-sectional view of the utility model.

Fig. 2 is the outline drawing of Fig. 1.

Fig. 3 is the top view of Fig. 2.

Fig. 4 is the stereogram of Fig. 2.

Fig. 5 is the schematic cross-sectional view of body.

Fig. 6 is the structure diagram of thimble.

Fig. 7 is the schematic cross-sectional view of sphere.

Fig. 8 carries out the rough machined structure diagram of outer circle for sphere installation on clamp for machining.

Fig. 9 is that sphere installation carries out outer circle without the structure diagram at cutting press polish on clamp for machining.

Specific embodiment

It will again elaborate to the utility model embodiment by above-mentioned attached drawing below.

As shown in Fig. 1 ~ Fig. 9,1. bodies, 11. clamping jaws, 111. tapered slopes, 12. counterbores, 13. groovings, 14. outer shoulders, 15. Mounting hole, concave ring groove in 16., shoulder in 17. positioning, 2. thimbles, 21. thread spindles, 22. tapered ends, the outer shoulder of 23. positioning, 3. sealing rings, 4. sphere, 41. limbers, 5. rough turn cutters, 6. diamond cutters.

A kind of the processing of sphere fixture as shown in Fig. 1 ~ Fig. 4, is related to a kind of fixture of the sphere Excircle machining for ball valve, Its structure is mainly made of body 1 and thimble 2 this two parts, and sphere 4 have as shown in Figure 7 axially through limbers 41。

The body 1 as shown in figure 5, be equipped in it axially through mounting hole 15,1 top of body is equipped with multiple circumference The clamping jaw 11 of enclosing, this implementation use four clamping jaws, are equipped with the grooving 13 of separation between every two neighboring clamping jaw 11, therefore pass through Grooving causes the top energy elasticity of each clamping jaw 11 to be flared out, and each 11 top inner wall of clamping jaw is equipped with tapered slope 111, Then just circumference is enclosed taper hole to the tapered slope 111 of four clamping jaws 11, i.e. the top of mounting hole 15 is justified for four clamping jaws 11 The taper hole being enclosed in week；Four 11 tops of clamping jaw are enclosed cylindrical end, and the outer diameter of the cylindrical end is less than limbers 41 aperture, therefore the top of four clamping jaws 11 just can be simultaneously packed into limbers 41.

2 top of thimble is set to tapered end 22 as shown in Figure 6, cone angle gradient and 1 taper hole of body of the thimble tapered end Interior 111 gradient of tapered slope is identical；The thimble 2 is from bottom to top packed into mounting hole 15, then also needs to be equipped in mounting hole Interior concave ring groove 16, and be equipped in interior concave ring groove and be embedded in fixed " O " type sealing ring, which contacts on thimble 2, can The dynamic seal movable in mounting hole 15 as thimble, plays the role of sealing and dustproof.

The thimble 2 is from bottom to top packed into mounting hole 15, until tapered end 22 is headed into taper hole, with regard to energy under thrust The overall diameter of four clamping jaws 11 is made to become larger, and then four clamping jaw tops is forced to be opened in limbers 41, so as to fix sphere 4, Namely realize being fixedly clamped on fixture of sphere 4；Meanwhile also need to be equipped with shoulder 17 in positioning in mounting hole 15, accordingly exist 2 outer circumference surface of thimble, which is equipped with, positions outer shoulder 23, when the thimble 2 being packed into mounting hole 15 is by positioning in the outer contact of shoulder 23 positioning During shoulder 17, loading depth of the thimble 2 in mounting hole 15 just can be accurately positioned, that is, accurately controls four clamping jaws 11 in water flowing Opening angle and clamping force in hole 41.

In addition, 1 bottom cylindrical circumferential surface of body is equipped with an outer shoulder 14 of circle, set on the outer shoulder there are three circumference uniform distribution, be used in combination It is installed in confession 8mm screws and is fixed on the counterbore 12 on high speed boring-and-turning mill main shaft；The bottom of thimble 2 also is provided with the spiral shell of M8 screw threads Line axis 21, for being mounted on lathe spindle.

Therefore, after the clamp for machining for being fixed with sphere 4 is mounted on lathe spindle, fixture is revolved according to clockwise direction Turn, then it can be by first carrying out roughing, and roughing ball clockwise along the axis direction of sphere 4 shown in Fig. 8 with rough turn cutter 5 External circle, the rough turn cutter 5 are made of tool apron and cutter, through hole are equipped on cutter, in order to which cruciform slot screw is fixed on On tool apron, rough machined sphere outer circle residue allowance only has 0.02 ~ 0.04mm；Pass through diamond cutter 6 shown in Fig. 9 again It is carried out counterclockwise without cutting press polish processing, to complete the polishing of sphere outer circle, the diamond tool along the axis direction of sphere 4 One piece of diamond tool is welded at the point of a knife of tool 6；Therefore the entire Excircle machining of sphere 4 can be made without transfer by the clamp for machining Processing polished process can be once completed, so as to which the collision of spherome surface be avoided to scratch.

In order to reach required spherome surface roughness, can also by adjusting the speed of mainshaft, tool feeding speed and Allowance, to find out best processing technology parameter.

Claims (9)

1. a kind of the processing of sphere fixture, suitable for band limbers（41）Sphere（4）Processing is clamped, including body（1）And activity Mounted on intrinsic thimble（2）, it is characterised in that the body（1）Top is equipped with the clamping jaw that multiple circumference enclose（11）, Each clamping jaw top inner wall is equipped with tapered slope（111）, multiple clamping jaws（11）Tapered slope（111）Circumference is enclosed cone Hole, multiple clamping jaws（11）Top be packed into limbers simultaneously（41）It is interior；The thimble（2）Top is set to tapered end（22）, the cone End heads into the taper hole and forces multiple clamping jaws（11）Top is in limbers（41）It is interior to open and fix sphere（4）.

A kind of 2. the processing of sphere fixture according to claim 1, it is characterised in that multiple clamping jaws（11）It encloses on top Conjunction forms cylindrical end, and the outer diameter of the cylindrical end is less than limbers（41）Aperture.

A kind of 3. the processing of sphere fixture according to claim 1, it is characterised in that the body（1）It is interior to be equipped with axial pass through Logical mounting hole（15）, the top of the mounting hole is multiple clamping jaws（11）The taper hole that circumference is enclosed, the thimble（2）By Lower and upper loading mounting hole（15）It is interior.

A kind of 4. the processing of sphere fixture according to claim 3, it is characterised in that the mounting hole（15）It is interior be equipped with it is interior Concave ring groove（16）, the interior concave ring groove is interior to be equipped with embedded fixed sealing ring（3）, and sealing ring dynamic sealing contact is in thimble（2） On.

A kind of 5. the processing of sphere fixture according to claim 3, it is characterised in that the mounting hole（15）Interior be equipped with is determined Shoulder in position（17）, accordingly in thimble（2）Outer circumference surface, which is equipped with, positions outer shoulder（23）, shoulder grafting touches shoulder in positioning outside for the positioning （17）, and positioning thimble（2）From bottom to top it is packed into mounting hole（15）Interior depth.

A kind of 6. the processing of sphere fixture according to claim 1, it is characterised in that the thimble（2）Tapered end（22）Cone Angle gradient and body（1）Tapered slope in taper hole（111）Gradient is identical.

A kind of 7. the processing of sphere fixture according to claim 1, it is characterised in that the clamping jaw（11）There are four tools, often Two neighboring clamping jaw（11）Between be equipped with the grooving of separation（13）, each clamping jaw（11）Top can elasticity be flared out.

A kind of 8. the processing of sphere fixture according to claim 1, it is characterised in that the body（1）Bottom cylindrical circumferential surface Equipped with an outer shoulder of circle（14）, the outer shoulder is equipped with the counterbore being fixed on lathe spindle（12）.

A kind of 9. the processing of sphere fixture according to claim 1, it is characterised in that the thimble（2）Bottom is equipped with installation Thread spindle on lathe spindle（21）.