CN208662560U - A kind of fixture for Model For The Bush-axle Type Parts processing - Google Patents

Abstract

The utility model discloses a kind of fixtures for Model For The Bush-axle Type Parts processing, which includes sleeve, mandrel body, tapered sleeve and nut；The inner wall of two opposite end of sleeve is equipped with inner conical surface, and the vertex of inner conical surface is located at sleeve inner, and sleeve one end side wall is equipped with several bar shapeds with sleeve axis parallel and stitches；Mandrel body includes the first connected male cone (strobilus masculinus), axle portion, and axle portion is equipped with external screw thread far from the first male cone (strobilus masculinus) direction end；Tapered sleeve lateral wall is set as the second male cone (strobilus masculinus)；Wherein, the male end of mandrel body axle portion is penetrated from sleeve one end and is pierced by from the sleeve other end, the male end that the axle portion is pierced by passes through tapered sleeve and is screwed into nut, and nut top is held on tapered sleeve, and the first male cone (strobilus masculinus) of tapered sleeve, the second male cone (strobilus masculinus) of mandrel body push up hold in the inner conical surface at sleeve both ends respectively.The utility model clamp structure is simple, easy to operate, can Quick-clamped or unclamp part, effectively eliminate because deformation caused by mismachining tolerance, ensure that machining accuracy.

Description

A kind of fixture for Model For The Bush-axle Type Parts processing

Technical field

The utility model belongs to high-efficient cutting manufacture field, more particularly to a kind of use for being quickly accurately positioned and eliminating error In the fixture of Model For The Bush-axle Type Parts processing.

Background technique

Machine-building axis cover parts occupy significant proportion.The machining of Model For The Bush-axle Type Parts mostly uses universal clamp at present Tool, such as scroll chuck and tailstock centre, but due to intermediate without supporting or supporting unbalance stress accordingly, so that adding in cutting During work, especially for lower or thin-wall sleeve the part of rigidity, radial cutting force easily makes part that non-uniform bending occur Deformation is mobile, so that the depth of cutting changes, so as to cause taper WEDM error and deviation from circular from, furthermore using tradition Chuck mode clamping mode is difficult to multiple claw simultaneously operatings in fixation procedure, time-consuming and laborious, while being easy to produce bias The phenomenon that, keep Model For The Bush-axle Type Parts positioning inaccurate to influence machining accuracy.

Utility model content

The purpose of this utility model is to provide a kind of fixtures for Model For The Bush-axle Type Parts processing, based on the uniform of sleeve Flexible deformation accurately quickly positions and eliminates the effect of mismachining tolerance to realize, it is intended to dismount axial workpiece realization efficiently Meanwhile, it is capable to guarantee that precise positioning is indeformable, to thoroughly eliminate part taper and deviation from circular from caused by pinching deformation.

The utility model discloses a kind of fixtures for Model For The Bush-axle Type Parts processing, which includes sleeve, mandrel body, cone Set and nut；The inner wall of two opposite end of sleeve is equipped with inner conical surface, and the vertex of the inner conical surface is located at sleeve inner, institute It states sleeve one end side wall and is equipped with several bar shapeds seams with sleeve axis parallel；The mandrel body includes the first connected outer cone Face, axle portion, the axle portion are equipped with external screw thread far from the first male cone (strobilus masculinus) direction end；The tapered sleeve lateral wall is set as the second male cone (strobilus masculinus)； Wherein, the male end of the mandrel body axle portion is penetrated from sleeve one end and is pierced by from the sleeve other end, which is pierced by outer The end of thread passes through and tapered sleeve and is screwed into nut, and the nut top is held on tapered sleeve, and the of the first male cone (strobilus masculinus) of the tapered sleeve, mandrel body Two male cone (strobilus masculinus)s push up hold in the inner conical surface at sleeve both ends respectively.

Preferably, the axle portion of the mandrel body is equipped with the positioning screw hole perpendicular to mandrel body axle center, in the positioning screw hole It is screwed into guider screw；The tapered sleeve further includes the tubular insertion section stretched out towards sleeve inner direction, which is equipped with and cone Cover the guide slit of axis parallel；Wherein, the guider screw is raised from mandrel body axle portion, and the protrusion is located in guide slit.

Preferably, the axle portion of the mandrel body includes the first shaft portion being connected directly with the first male cone (strobilus masculinus) and with described The second shaft portion that one axle portion is connected directly；Wherein, the internal diameter of the first shaft portion is adapted to tapered sleeve internal diameter, and the first shaft portion It is equipped with the positioning screw hole；The internal diameter of the second shaft portion is adapted to nut internal diameter, and the second shaft portion is equipped with described External screw thread；

The outer diameter of the tapered sleeve insertion section is adapted to sleeve diameter.

Preferably, the mandrel body further includes the clamping part and withstanding part at both ends；Wherein, the clamping part, which is equipped with, is applicable in In the holding holes of scroll chuck grasping, the withstanding part is equipped with the top held suitable for thimble top and holds hole.

Preferably, side edge of the tapered sleeve male cone (strobilus masculinus) far from insertion section direction end is along equipped with hook portion, the ditch shape portion The exit or entrance of a clitch towards tapered sleeve axis direction be arranged；The nut is band shoulder nut；Wherein, the band shoulder nut is screwed into outside mandrel body axle portion The end of thread and push up hold on tapered sleeve, the shoulder with shoulder nut is located in the exit or entrance of a clitch of hook portion.

Preferably, several bar shaped seams are symmetrically distributed in sleeve lateral wall centered on sleeve axle center.

Preferably, the inner conical surface at the sleeve both ends is respectively the first inner conical surface for holding with the first male cone (strobilus masculinus) top and with the The second inner conical surface that two male cone (strobilus masculinus) tops are held；Wherein,

The first inner cone vertex of surface angle is greater than the first outer cone vertex of surface angle；

The second inner cone vertex of surface angle is less than the second outer cone vertex of surface angle.

Preferably, the first outer cone vertex of surface angle, the second outer cone vertex of surface angle are 60 °, first inner cone Vertex of surface angle is 62 °, and the second inner cone vertex of surface angle is 58 °.

Compared with the prior art the shortcomings that and deficiency, the utility model has the following beneficial effects: the utility model fixture Structure is simple, easy to operate；Can Quick-clamped or unclamp part, greatly reduce disassembly and assembly time, improve work efficiency；? While guaranteeing to be accurately positioned and effectively clamp, the deformation of part is avoided, thus mismachining tolerance caused by eliminating because of deformation, It ensure that machining accuracy.

Detailed description of the invention

Fig. 1 is the utility model for the structure after the fixture of Model For The Bush-axle Type Parts processing and workpiece assembly under perspective Schematic diagram；

Fig. 2 is the structural schematic diagram of the sleeve of the utility model and the sectional view perpendicular to axis direction；

Fig. 3 is the structural schematic diagram of the mandrel body of the utility model；

Fig. 4 is the structural schematic diagram of the tapered sleeve of the utility model.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example is described in further detail the fixture of the utility model, it should be understood that specific embodiment described herein is only used To explain the utility model, it is not used to limit the utility model.

As described in Fig. 1~4, wherein Fig. 1 is after fixture and workpiece of the utility model for Model For The Bush-axle Type Parts processing assemble Structural schematic diagram under perspective；Fig. 2 is the structural schematic diagram of the sleeve of the utility model and perpendicular to axis direction Sectional view；Fig. 3 is the structural schematic diagram of the mandrel body of the utility model；Fig. 4 is the structural representation of the tapered sleeve of the utility model Figure.

The utility model discloses a kind of fixtures of Model For The Bush-axle Type Parts processing, which includes sleeve 1, mandrel body 2, tapered sleeve 3 and nut 4；The inner wall of 1 liang of opposite end of sleeve is equipped with inner conical surface (1-1,1-2), the inner conical surface (1-1,1-2) Vertex is located inside sleeve 1, and the 1 one end side wall of sleeve is equipped with several bar shapeds with 1 axis parallel of sleeve and stitches 1-3；Institute Stating mandrel body 2 includes connected the first male cone (strobilus masculinus) 2-1, axle portion 2-2, and the axle portion is equipped with far from the first direction male cone (strobilus masculinus) 2-1 end External screw thread 2-3；3 lateral wall of tapered sleeve is set as the second male cone (strobilus masculinus) 3-1；Wherein,

The end external screw thread 2-3 of 2 axle portion of mandrel body penetrates from 1 one end of sleeve and is pierced by from 1 other end of sleeve, the axle portion The end external screw thread 2-3 being pierced by passes through tapered sleeve 3 and is screwed into nut 4, and the top of nut 4 is held on tapered sleeve 3, and the first of the tapered sleeve 3 Male cone (strobilus masculinus) 2-1, mandrel body 2 the second male cone (strobilus masculinus) 3-1 pushed up in the inner conical surface (1-1,1-2) held at 1 both ends of sleeve respectively.

It is practical new directly to apply to this convenient for traditional scroll chuck and tailstock centre in the utility model embodiment On type fixture, more specifically, the mandrel body 2 further includes the clamping part 2-4 and withstanding part 2-5 at both ends；Wherein, the clamping part 2-4 is equipped with the holding holes for being suitable for scroll chuck grasping, and the withstanding part 2-5 is equipped with the top held suitable for thimble top and holds Hole.

In the utility model embodiment, held in workpiece inner wall to enable 1 side wall of sleeve uniformly to push up, more specifically, if The bar shaped seam 1-3 is done to be symmetrically distributed in centered on 1 axle center of sleeve on 1 side wall of sleeve.

In the utility model embodiment, sleeve 1 is the key part of the fixture, structure size, material and the heat of sleeve 1 The influence to fixture service performance such as processing, machining accuracy is very big, needs to carry out test verification according to actual use situation to determine.

In the actual application of the utility model, sleeve 1 is placed in workpiece 5, mandrel body 2 is inserted into sleeve 1, Nut 4, the first outer cone of tapered sleeve 3 are screwed into after being inserted in tapered sleeve 3 from the end external screw thread 2-3 that 1 other end of sleeve is pierced by mandrel body 2 Face 2-1, mandrel body 2 the second male cone (strobilus masculinus) 3-1 push up hold in the inner conical surface at 1 both ends of sleeve respectively, at this point, not with nut 4 It is disconnected to tighten, the first male cone (strobilus masculinus) 2-1, the second male cone (strobilus masculinus) 3-1 pressing process in, since sleeve 1 is by the several of the first conical surface end The presence of 1-3 is stitched in bar shaped, and first conical surface is constantly pressed into sleeve 1, and sleeve 1 is finally equipped with to the side wall court at the bar shaped seam end 1-3 Far from expansion is jacked up on 1 axis direction of sleeve, the side wall that sleeve 1 expands then is pressed in the inner wall of workpiece 5, will compress workpiece 5 angle is mounted on lathe, in the holding holes that 2 clamping part 2-4 of mandrel body is firmly grasped by machine tool three-jaw chuck, tailstock tool top Pinnacle is tightly held in hole on the top of withstanding part 2-5, be based on it is well known by those skilled in the art that fixture, workpiece 5 etc. assembly after, work Part 5, sleeve 1, mandrel body 2, tapered sleeve 3 should all be with the top coaxial heart of lathe, operate lathe and final complete after the assembly is completed Machining operation at cutter to 5 surface of workpiece.After completing the processing of current workpiece 5, by nut 4 from 2 axle portion of mandrel body External screw thread 2-3 slightly unscrews at end, and the sidewall elastomer that sleeve 1 expands shrinks return, the impaction state solution of sleeve 1 and current workpiece 5 It removes, current workpiece 5 is removed, other workpieces to be processed 5 are ressembled on fixture, repeat aforesaid operations, work can be completed 5 batch machining of part.

The utility model structure is simple and convenient to operate, and is realized based on the principle of even resilient deformation to axle sleeve-like workpieces 5 Quick positioning and clamp, the positioning of workpiece to be machined 5 is more accurate, and processes and miss caused by effectively eliminating because of pinching deformation Difference also greatly improves processing efficiency while keeping machining accuracy.

In the further implementation process of the utility model, to ensure that tapered sleeve 3 can accurately prolong sleeve during nut 4 is screwed into It is moved on 1 axial line, in the utility model embodiment, the axle portion of the mandrel body 2 is equipped with perpendicular to 2 axle center of mandrel body Positioning screw hole 2-6 is screwed into guider screw 6 in the positioning screw hole；The tapered sleeve 3 further includes the cylinder stretched out towards 1 internal direction of sleeve Shape insertion section 3-2, insertion section 3-2 are equipped with the guide slit 3-3 with 3 axis parallel of tapered sleeve；Wherein, the guider screw 6 from It is raised in 2 axle portion of mandrel body, and the protrusion is located in guide slit 3-3.

In actual application in the utility model embodiment, when tapered sleeve 3 is inserted in 2 axle portion of mandrel body, tubular is inserted Enter portion 3-2 to enter in sleeve 1, and guider screw 6 enters in guide slit 3-3, in the rundown process of nut 4, be oriented to Screw 6 cooperates under the guiding role of guide slit 3-3, and tapered sleeve 3 can accurately prolong to be moved on 1 axial line of sleeve, can ensure that sleeve 1 by the The more uniform expansion of the side wall energy at one end male cone (strobilus masculinus) 2-1.

In the further implementation process of the utility model, to enable the axle portion of mandrel body 2 to fill sleeve 1 preferably to keep away Exempt from the place that sleeve 1 is not required to deform to deform, and is convenient for the installation of tapered sleeve 3, in the utility model embodiment, the core The axle portion of axis body 2 includes being connected directly with the first male cone (strobilus masculinus) 2-1 first shaft portion being connected directly and with the first shaft portion The second shaft portion；Wherein, the internal diameter of the first shaft portion is adapted to 3 internal diameter of tapered sleeve, and the first shaft portion is equipped with the positioning Screw hole；The internal diameter of the second shaft portion is adapted to 4 internal diameter of nut, and the second shaft portion is equipped with the external screw thread 2-3.

In the utility model embodiment, 3 insertion section 3-2 of tapered sleeve can be good at filling 2 axle portion of mandrel body and sleeve 1 it Between gap, do not deformed under squeezed state with supporting sleeve 1 by 3 direction end of tapered sleeve.

In the further implementation process of the utility model, to be twisted convenient for nut 4 from the 2 axle portion end external screw thread 2-3 of mandrel body Tapered sleeve 3 is taken out of out of sleeve 1 during out, in the utility model embodiment, 3 male cone (strobilus masculinus) of tapered sleeve is far from insertion section The side edge at the direction 3-2 end is arranged along hook portion 3-4, the exit or entrance of a clitch in the ditch shape portion is equipped with towards 3 axis direction of tapered sleeve；The nut 4 be band shoulder nut 4；Wherein, the band shoulder nut 4 is screwed into the 2 axle portion end external screw thread 2-3 of mandrel body and pushes up and holds on tapered sleeve 3, described Shoulder with shoulder nut 4 is located in the exit or entrance of a clitch of hook portion.

In the actual application of the utility model, after the machining for completing workpiece 5, by nut 4 from mandrel body 2 Axle portion external screw thread 2-3 back-outs at end, and during back-outing, the tip top of nut 4 is held in the exit or entrance of a clitch of hook portion, and finally by tapered sleeve 3 take out of out of sleeve 1, this makes the dismounting of fixture and workpiece 5 more efficiently, conveniently.

In the further implementation process of the utility model, in the rundown process of nut 4, to ensure sleeve 1 by first The side wall stress of male cone (strobilus masculinus) 2-1 is preferential, in the utility model embodiment, the inner conical surface (1-1,1-2) point at 1 both ends of sleeve The the first inner conical surface 1-1 held Wei not be pushed up with the first male cone (strobilus masculinus) 2-1 and pushes up the second inner conical surface 1-2 held with the second male cone (strobilus masculinus) 3-1； Wherein, the first inner conical surface 1-1 vertex angle is greater than the first vertex male cone (strobilus masculinus) 2-1 angle；The vertex second inner conical surface 1-2 Angle is less than the second vertex male cone (strobilus masculinus) 3-1 angle.

In the actual application of the utility model, since the first inner conical surface 1-1 vertex angle is greater than the first male cone (strobilus masculinus) The vertex 2-1 angle, and when the second inner conical surface 1-2 vertex angle is less than the second male cone (strobilus masculinus) 3-1 vertex angle, 1-3 is stitched in 1 bar shaped of sleeve The side wall at place is greater than the stress of 1 other end side wall of sleeve to the stress far from axis direction, in the rundown process of nut 4, set The side wall at the place cylinder 1 bar shaped seam 1-3 then more easily stress, expands more evenly.

In the further implementation process of the utility model, in order to improve taper-face contact situation, and in view of using The abrasion generated in journey, in the utility model embodiment, more specifically, the vertex the first male cone (strobilus masculinus) 2-1 angle, outside second The vertex conical surface 3-1 angle is 60 °, and the vertex the first inner conical surface 1-1 angle is 62 °, the vertex the second inner conical surface 1-2 folder Angle is 58 °.In the utility model actual application, according to the setting of each conical surface angle, correspondingly, bar shaped is stitched on sleeve 1 The setting quantity of 1-3 is four, divides the circumference into pintongs in order to 1 side wall breathing of sleeve.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (8)

1. it is a kind of for Model For The Bush-axle Type Parts processing fixture, which is characterized in that the fixture include sleeve, mandrel body, tapered sleeve and Nut；The inner wall of two opposite end of sleeve is equipped with inner conical surface, and the vertex of the inner conical surface is located at sleeve inner, the sleeve One end side wall is equipped with several bar shapeds with sleeve axis parallel and stitches；The mandrel body includes the first connected male cone (strobilus masculinus), axis Portion, the axle portion are equipped with external screw thread far from the first male cone (strobilus masculinus) direction end；The tapered sleeve lateral wall is set as the second male cone (strobilus masculinus)；Wherein,

The male end of the mandrel body axle portion is penetrated from sleeve one end and is pierced by from the sleeve other end, the outer spiral shell which is pierced by Line end passes through and tapered sleeve and is screwed into nut, and the nut top is held on tapered sleeve, and the second of the first male cone (strobilus masculinus) of the tapered sleeve, mandrel body Male cone (strobilus masculinus) pushes up hold in the inner conical surface at sleeve both ends respectively.

2. fixture as described in claim 1, which is characterized in that the axle portion of the mandrel body is equipped with perpendicular to mandrel body axle center Positioning screw hole, be screwed into guider screw in the positioning screw hole；The tapered sleeve further includes that the tubular stretched out towards sleeve inner direction is inserted Enter portion, which is equipped with the guide slit with tapered sleeve axis parallel；Wherein, the guider screw is convex from mandrel body axle portion It rises, and the protrusion is located in guide slit.

3. fixture as claimed in claim 2, which is characterized in that the axle portion of the mandrel body includes and the direct phase of the first male cone (strobilus masculinus) First shaft portion even and the second shaft portion being connected directly with the first shaft portion；Wherein, the internal diameter and cone of the first shaft portion Internal diameter adaptation is covered, and the first shaft portion is equipped with the positioning screw hole；The internal diameter of the second shaft portion is adapted to nut internal diameter, And the second shaft portion is equipped with the external screw thread；

The outer diameter of the tapered sleeve insertion section is adapted to sleeve diameter.

4. fixture as described in claim 1, which is characterized in that the mandrel body further includes the clamping part and withstanding part at both ends； Wherein, the clamping part is equipped with the holding holes for being suitable for scroll chuck grasping, and the withstanding part, which is equipped with, is suitable for thimble top Hold hole in the top held.

5. fixture as claimed in claim 2, which is characterized in that the side edge of the tapered sleeve male cone (strobilus masculinus) far from insertion section direction end Along hook portion is equipped with, the exit or entrance of a clitch in the ditch shape portion is arranged towards tapered sleeve axis direction；The nut is band shoulder nut；Wherein, described Band shoulder nut is screwed into mandrel body axle portion male end and pushes up and holds on tapered sleeve, and the shoulder with shoulder nut is located at the ditch of hook portion In mouthful.

6. fixture as described in claim 1, which is characterized in that several bar shaped seams are symmetrical centered on sleeve axle center In sleeve lateral wall.

7. fixture as described in claim 1, which is characterized in that the inner conical surface at the sleeve both ends be respectively and the first male cone (strobilus masculinus) Push up the first inner conical surface held and the second inner conical surface held with the second male cone (strobilus masculinus) top；Wherein,

The first inner cone vertex of surface angle is greater than the first outer cone vertex of surface angle；

The second inner cone vertex of surface angle is less than the second outer cone vertex of surface angle.

8. fixture as claimed in claim 7, which is characterized in that the first outer cone vertex of surface angle, the second outer cone vertex of surface Angle is 60 °, and the first inner cone vertex of surface angle is 62 °, and the second inner cone vertex of surface angle is 58 °.