CN102962704B - Special fixture for turning two end surfaces of thin-wall conical part - Google Patents
Special fixture for turning two end surfaces of thin-wall conical part Download PDFInfo
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- CN102962704B CN102962704B CN201110256135.0A CN201110256135A CN102962704B CN 102962704 B CN102962704 B CN 102962704B CN 201110256135 A CN201110256135 A CN 201110256135A CN 102962704 B CN102962704 B CN 102962704B
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Abstract
The invention relates to a special fixture for turning two end surfaces of a thin-wall conical part, aiming at solving the problems that the thin-wall conical part is apt to be deformed during clamping and cannot be clamped by using a universal fixture. The connecting shaft of a mandrel sequentially penetrates through the mandrel positioning hole of a first fixture body, a lathe main shaft threaded connecting hole and a lathe main shaft positioning hole and is arranged outside the first fixture body. The circular-truncated-cone-shaped shaft of the mandrel is arranged outside the first fixture body. An axial long hole and an axial long slit are arranged on the wall of the thin-wall round pipe of an elastic chuck. The circular-truncated-cone-shaped end of the elastic chuck is provided with an end conical hole. The elastic chuck is fixedly sheathed on the first fixture body. An inner ring and an outer ring are installed in the bearing shoulder hole of a tail ejection body. A ball retainer is installed between the inner ring and the outer ring. Balls are installed on the ball retainer. A turning hole and a chip hole are arranged in the wall of a connecting hole in the second fixture body of the tail ejection body. The special fixture is used for clamping and positioning during turning of the two end surfaces of the thin-wall conical part.
Description
Technical field
The present invention relates to a kind of fixture of turning thin-wall bullet part both ends of the surface.
Background technology
Thin-wall conical body part is the sheet metal roll welding fabrication of δ by wall thickness, and the wall thickness δ of thin-wall conical body part is generally 1 ~ 5mm, and cone angle is α (see Figure 13), and two end faces need to be set to finished size.Because thin-wall conical body parts fixation is easily out of shape, and thin-wall conical body External Shape is that taper can not with general fixture (scroll chuck or chuck) clamping.
Summary of the invention
The object of this invention is to provide a kind of turning thin-wall bullet part both ends of the surface special fixture, be easily out of shape to solve thin-wall conical body class parts fixation, and thin-wall conical body External Shape be taper can not by the problem of general fixture clamping.
The present invention is the technical scheme taked that solves the problem:
Turning thin-wall bullet part both ends of the surface special fixture, described special fixture comprises spring chuck and tail acrosome, and spring chuck and tail acrosome are coaxially arranged; Spring chuck comprises mandrel, the first clamp body and collet; Tail acrosome comprises baffle plate, outer shroud, pearl frame, inner ring, the second clamp body, lining and multiple ball;
The center of one side end face of the first clamp body is provided with lathe spindle locating hole, lathe spindle threaded connection hole and mandrel locating hole vertically successively, mandrel is made up of all-in-one-piece connecting axle processed, locating shaft and round platform oblique crank Z successively, the diameter of axle of connecting axle is less than the diameter of axle of locating shaft, the diameter of axle of locating shaft is less than the small end diameter of axle of round platform oblique crank Z, small end face and the locating shaft of round platform oblique crank Z are adjacent, the connecting axle of mandrel is arranged on the outside of the first clamp body successively through the mandrel locating hole of the first clamp body, lathe spindle threaded connection hole and lathe spindle locating hole, the locating shaft of mandrel and the mandrel locating hole matched in clearance of the first clamp body, the round platform oblique crank Z of mandrel is arranged on the outside of the first clamp body, and the end of connecting axle is provided with external screw thread, collet is by all-in-one-piece boss processed, thin-wall circular tube and truncated cone-shaped termination are formed successively, the larger diameter end of truncated cone-shaped termination is disposed adjacent with thin-wall circular tube, boss is provided with the centre bore communicated with thin-wall circular tube, the tube wall of thin-wall circular tube is uniformly distributed along the circumference and is provided with multiple axial long hole, each axial long hole to truncated cone-shaped termination outer face between have the slit communicated with axial long hole vertically, center on the outer face of truncated cone-shaped termination is provided with the termination conical bore communicated with thin-wall circular tube vertically, the larger diameter end of termination conical bore is corresponding with the smaller diameter end of truncated cone-shaped termination, the smaller diameter end of termination conical bore is corresponding with the larger diameter end of truncated cone-shaped termination, collet is sleeved on the first clamp body admittedly, the outer conical surface of the round platform oblique crank Z of mandrel matches with the internal conical surface of the termination conical bore of truncated cone-shaped termination, the center of the side end face that the second clamp body is adjacent with truncated cone-shaped termination is provided with bearing shoulder hole, second clamp body is provided with lining shoulder hole away from the center of the opposite side end face of truncated cone-shaped termination, second clamp body is provided with the connecting hole communicated with the two between pedestal shoulder hole and lining shoulder hole, bearing shoulder hole is built with outer shroud, exterior ring cap is contained in inner ring, outer shroud is fixed by the shoulder end face axial in bearing shoulder hole, pearl frame is housed between outer shroud and inner ring, pearl frame is equipped with multiple ball, the side end face that second clamp body is adjacent with truncated cone-shaped termination is connected with baffle plate, outer shroud, inner ring, pearl frame and multiple ball are by baffle plate axial limiting, the interior annular distance of inner ring is made up of inner ring circular port and inner ring conical bore, the larger diameter end of inner ring conical bore is adjacent with inner ring circular port, the hole wall of the connecting hole in the second clamp body has two turning holes and a chip-removal hole, chip-removal hole is positioned at the bottom of this connecting hole hole wall, and chip-removal hole is arranged on the centre in two turning holes, lining shoulder hole is built with lining, the endoporus of lining coordinates with lathe tail top.
The invention has the beneficial effects as follows: adopt special fixture of the present invention to thin-wall conical body part turnery processing two end faces simultaneously, not only overcome the technical barrier of clamping deformation, also meet the requirement that thin-wall conical body parts batch is produced simultaneously.The present invention also has the advantage that clamp structure is simple, clamping is fast, the process-cycle is short, production efficiency is high, can be generalized among field of machining thin-wall conical body part both ends of the surface turning process technology.And realize the turnery processing that clamped one time completes thin-wall conical body part two end faces simultaneously, can drawing requirement be ensured, can enhance productivity again.
Accompanying drawing explanation
Fig. 1 is the front view of special fixture of the present invention, Fig. 2 is the front view of mandrel, Fig. 3 is the left view of Fig. 2, Fig. 4 is the front view of the first clamp body, and Fig. 5 is the left view of Fig. 4, and Fig. 6 is the front view of collet, Fig. 7 is the A-A sectional view of Fig. 6, Fig. 8 is the right view of Fig. 6, and Fig. 9 is the front view of the second clamp body, and Figure 10 is Fig. 9
B-B sectional view, Figure 11 is the C direction view of Figure 10, and Figure 12 is the D portion enlarged drawing of Fig. 1, and Figure 13 is the front view of thin-wall conical body part.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 ~ Figure 13 illustrates, the turning thin-wall bullet part both ends of the surface special fixture of present embodiment, described special fixture comprises spring chuck 1 and tail acrosome 2, and spring chuck 1 and tail acrosome 2 are coaxially arranged; Spring chuck 1 comprises mandrel 1-1, the first clamp body 1-2 and collet 1-3; Tail acrosome 2 comprises baffle plate 2-1, outer shroud 2-2, pearl frame 2-3, inner ring 2-4, the second clamp body 2-5, lining 2-6 and multiple ball 2-7;
The center of one side end face of the first clamp body 1-2 is provided with lathe spindle locating hole 1-2-1 (ensureing that the axis of the first clamp body 1-2 is coaxial with lathe spindle), lathe spindle threaded connection hole 1-2-2 (ensure that described special fixture is connected reliably with lathe spindle, prevent this special fixture from coming off) and mandrel locating hole 1-2-3 vertically successively, mandrel 1-1 is made up of all-in-one-piece connecting axle 1-1-1 processed, locating shaft 1-1-2 and round platform oblique crank Z 1-1-3 successively, the diameter of axle of connecting axle 1-1-1 is less than the diameter of axle of locating shaft 1-1-2, the diameter of axle of locating shaft 1-1-2 is less than the small end diameter of axle of round platform oblique crank Z 1-1-3, the small end face of round platform oblique crank Z 1-1-3 is adjacent with locating shaft 1-1-2, the connecting axle 1-1-1 of mandrel 1-1 is successively through the mandrel locating hole 1-2-3 of the first clamp body 1-2, lathe spindle threaded connection hole 1-2-2 and lathe spindle locating hole 1-2-1 is arranged on the outside of the first clamp body 1-2, the locating shaft 1-1-2 of mandrel 1-1 and the mandrel locating hole 1-2-3 matched in clearance (ensureing that mandrel 1-1 can slide in the first clamp body 1-2) of the first clamp body 1-2, the round platform oblique crank Z 1-1-3 of mandrel 1-1 is arranged on the outside of the first clamp body 1-2, the end of connecting axle 1-1-1 is provided with external screw thread, collet 1-3 is by all-in-one-piece boss 1-3-1 processed, thin-wall circular tube 1-3-2 and truncated cone-shaped termination 1-3-3 are formed successively, the larger diameter end of truncated cone-shaped termination 1-3-3 is disposed adjacent with thin-wall circular tube 1-3-2, boss 1-3-1 is provided with the centre bore 1-3-1-1 communicated with thin-wall circular tube 1-3-2, the tube wall of thin-wall circular tube 1-3-2 is uniformly distributed along the circumference and is provided with multiple axial long hole 1-3-2-1, have the slit 1-3-2-2 communicated with axial long hole 1-3-2-1 between the outer face of each axial long hole 1-3-2-1 to truncated cone-shaped termination 1-3-3 vertically and (can increase the frictional force between thin-wall conical body part 10, and can ensure that collet 1-3 has enough elasticity.Operationally, be connected with mandrel 1-1 with cylinder, mandrel 1-1 is pulled to move to the direction away from tail acrosome 2, the outside swollen clamping thin-wall conical body part 10 of collet 1-3), center on the outer face of truncated cone-shaped termination 1-3-3 is provided with the termination conical bore 1-3-3-1 communicated with thin-wall circular tube 1-3-2 vertically, the larger diameter end of termination conical bore 1-3-3-1 is corresponding with the smaller diameter end of truncated cone-shaped termination 1-3-3, the smaller diameter end of termination conical bore 1-3-3-1 is corresponding with the larger diameter end of truncated cone-shaped termination 1-3-3, collet 1-3 is admittedly sleeved on the first clamp body 1-2 and (passes through connecting bolt, nuts and washers), the outer conical surface of the round platform oblique crank Z 1-1-3 of mandrel 1-1 matches with the internal conical surface of the termination conical bore 1-3-3-1 of truncated cone-shaped termination 1-3-3 (when mandrel 1-1 is to when moving away from tail acrosome 2 direction, the outer conical surface of collet 1-3 is outwards swollen, the outer conical surface of the truncated cone-shaped termination 1-3-3 of collet 1-3 coordinates with the inner surface of the larger diameter end of thin-wall conical body part 10, thus realize the location clamping of thin-wall conical body part 10 being held greatly to inner surface, because the contact area of collet 1-3 and thin-wall conical body part 10 is large, the distortion of thin-wall conical body part 10 can be prevented), the center of the side end face that the second clamp body 2-5 is adjacent with truncated cone-shaped termination 1-3-3 is provided with bearing shoulder hole 2-5-1, second clamp body 2-5 is provided with lining shoulder hole 2-5-2 away from the center of the opposite side end face of truncated cone-shaped termination 1-3-3, second clamp body 2-5 is provided with the connecting hole 2-5-3 communicated with the two between pedestal shoulder hole 2-5-1 and lining shoulder hole 2-5-2, bearing shoulder hole 2-5-1 is built with outer shroud 2-2, outer shroud 2-2 is sleeved on inner ring 2-4, outer shroud 2-2 is fixed by the shoulder end face axial of bearing shoulder hole 2-5-1, pearl frame 2-3 is housed between outer shroud 2-2 and inner ring 2-4, multiple ball 2-7 (ensureing that ball 2-7 is evenly distributed between inner ring 2-4 and outer shroud 2-2) pearl frame 2-3 is equipped with, the side end face that second clamp body 2-5 is adjacent with truncated cone-shaped termination 1-3-3 is connected with baffle plate 2-1, outer shroud 2-2, inner ring 2-4, pearl frame 2-3 and multiple ball 2-7 (prevents outer shroud 2-2 by baffle plate 2-1 axial limiting, inner ring 2-4, pearl frame 2-3 and ball 2-7 comes off from the second clamp body 2-5, ensure that inner ring 2-4 can rotate by the central axis of the second clamp body 2-5), the interior annular distance of inner ring 2-4 is made up of inner ring circular port 2-4-1 and inner ring conical bore 2-4-2, the larger diameter end of inner ring conical bore 2-4-2 is adjacent with inner ring circular port 2-4-1, and (inner ring conical bore 2-4-2 coordinates with the small end outer surface of thin-wall conical body part 10, realize locating the outer surface of the minor diameter end face of thin-wall conical body part 10, due to the hole wall of inner ring conical bore 2-4-2 and the contact area of thin-wall conical body part 10 large, the distortion of thin-wall conical body part 10 can be prevented, the minor diameter end face of thin-wall conical body part 10 reaches in the connecting hole 2-5-3 in the second clamp body 2-5), the hole wall of the connecting hole 2-5-3 in the second clamp body 2-5 has two turning hole 2-5-3-1 and chip-removal hole 2-5-3-2 (removing chip), chip-removal hole 2-5-3-2 is positioned at the bottom of this connecting hole 2-5-3 hole wall, and chip-removal hole 2-5-3-2 is arranged on the centre of two turning hole 2-5-3-1 (lathe tool carries out turning by the minor diameter end face of turning hole 2-5-3-1 to thin-wall conical body part 10), lining shoulder hole 2-5-2 is built with lining 2-6, the endoporus of lining 2-6 coordinates with lathe tail top (dead in line making the second clamp body 2-5 central axis and lathe spindle).
Present embodiment is located clamping thin-wall conical body part 10 by collet 1-3 and is held inner surface greatly, and the inner ring 2-4 location clamping thin-wall conical body part 10 small end face outer surface of tail acrosome 2, ensures axis and the lathe spindle dead in line of thin-wall conical body part 10.
Detailed description of the invention two: composition graphs 7 illustrates, the tube wall of the thin-wall circular tube 1-3-2 of present embodiment is uniformly distributed along the circumference and is provided with eight axial long hole 1-3-2-1.Other is identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 6 and Fig. 8 illustrate, the seam of the slit 1-3-2-2 of present embodiment is wide is 2 ~ 3mm.Other is identical with detailed description of the invention one.
Detailed description of the invention four: composition graphs 6 and Fig. 7 illustrate, the wall thickness of the thin-wall circular tube 1-3-2 of present embodiment is 3 ~ 5mm.Other with detailed description of the invention one, two or three identical.
The course of work: when Vehicle Processing, holds out against the large end inner surface of thin-wall conical body part with the collet of spring chuck, and the large end inner surface of collet outer conical surface location thin-wall conical body part, thin-wall conical body part large end face exceeds collet.The interior loop mapping thin-wall conical body part small end outer surface of tail acrosome, the small end face of thin-wall conical body part puts in tail acrosome inside.By moving tail acrosome to spring chuck direction, thin-wall conical body part is held out against.Then pull mandrel to move to away from tail acrosome direction with the cylinder of lathe-head, make collet outwards swollen, the large end inner surface of clamping thin-wall conical body part.The location to thin-wall conical body part can be ensured by the inner ring of elastic clip head and tail acrosome.During work, lathe spindle rotates, and spring chuck rotates together with lathe spindle, and spring chuck drives thin-wall conical body part with lathe spindle axis for axis of rotation.Two cutter platforms installed by lathe, and a cutter platform is used for the large end of turning thin-wall bullet part, and another cutter platform is used for the small end of turning thin-wall bullet part.The both ends of the surface of turning thin-wall bullet part simultaneously can be realized, enhance productivity.
By above-mentioned clamping process, to thin-wall conical body part positioning and clamping.Engine lathe completes clamped one time and both ends of the surface turnery processing to thin-wall conical body part, each processing thin-wall conical body part.Closed by cylinder valve, the collet of spring chuck restores to the original state state under elastic force effect, eliminates the clamping force of thin-wall conical body accessory inner surface.Thin-wall conical body part, to moving away from spring chuck direction and drive tail acrosome to move simultaneously, is pulled down in the tail top of lathe.Realize clamped one time, complete the turnery processing of a thin-wall conical body part two end faces simultaneously.
Claims (4)
1. a turning thin-wall bullet part both ends of the surface special fixture, is characterized in that: described special fixture comprises spring chuck (1) and tail acrosome (2), and spring chuck (1) and tail acrosome (2) are coaxially arranged; Spring chuck (1) comprises mandrel (1-1), the first clamp body (1-2) and collet (1-3); Tail acrosome (2) comprises baffle plate (2-1), outer shroud (2-2), pearl frame (2-3), inner ring (2-4), the second clamp body (2-5), lining (2-6) and multiple ball (2-7);
Concrete (1-2) on one side of the first clip along the axial end face of the center, in turn, has a lathe spindle positioning hole (1-2-1), lathe spindle threaded hole (1-2-2) and spindle positioning hole (1-2-3); Spindle (1, 1), in turn, made by one of the connecting shaft (1-1-1), positioning shaft (1-1-2) and frustum of a cone shape of shaft (1-1-3); Connecting shaft (1-1-1) the diameter of axle of less than the diameter of axle of positioning shaft (1-1-2), positioning shaft (1-1-2) the diameter of axle is less than the frustum of a cone shape of the shaft (1-1-3) small end diameter of axle, frustum of a cone shaft (1-1-3) the small end face and neighbouring positioning shaft (1-1-2), spindle (1, 1) of the connecting shaft (1-1-1), in turn, through the first concrete (1-2) spindle positioning hole (1-2-3), lathe spindle threaded hole (1-2-2) and a lathe spindle positioning hole (1-2-1) set in the first clip specific external (1-2), spindle (1 - (1) the positioning of the shaft (1-1-2) and the core of the concrete (1-2) shaft (1-2-3) clearance fit positioning hole, spindle (1, 1) the frustum of a cone shape of shaft (1-1-3) set in the first outside of the concrete (1-2), the end of the connecting shaft (1-1-1) with external thread; Elastic clamp (1-3) made of convex sets in turn (1-3-1), thin wall pipe (1-3-2) and frustum of a cone shaped end (1-3-3); Frustum of a cone shaped end (1-3-3) of the big end diameter and thin wall pipe (1-3-2) adjacent Settings, convex platform (1-3-1) has with thin wall pipe (1-3-2) on the center of the hole (1-3-1),Along the circumference of the thin-walled tube (1-3-2) in a plurality of axial wall were laid long holes (1-3-2-1), the axial length of each hole (1-3-2-1) to between the round-shaped ends (1-3-3) opened the outer end and an axial length of the hole (1-3-2-1) communicating slit (1-3-2-2) in the axial direction, with a round Taiwan shaped ends (1-3-3) at the center of the axial surface of the outer end is provided with a thin-walled tube (1-3-2) communicating ends tapered bore (1-3-3-1), the ends conical bore (1-3-3-1) of the large diameter end and round-shaped ends (1-3-3) corresponding to the end of the small diameter, the tip tapered bore (1-3-3-1) of small diameter end of the sawn-off cone tip (1-3-3) corresponding to the end of a large diameter, the collet (1-3) in a first clamp fixed sets (1-2), the mandrel (1-1) frustum-shaped shaft (1-1-3) of outer conical surface with round-shaped ends (1-3-3) ends tapered bore (1-3-3-1) with an inner conical surface; the second clamp (2-5) at the center of the round-shaped ends (1-3-3) adjacent to one end face of a bearing shoulder holes (2-5-1), second clamp (2-5) away the center of the frustum-shaped tip (1-3-3) of the other end face is provided with a shoulder bushing hole (2-5-2), a second clamp (2-5) on the bore of the bearing shoulder (There connection between the hole and the two interlinked 2-5-1) and a shoulder bushing hole (2-5-2) (2-5-3), bearing shoulder holes (2-5-1) built there outer ring (2-2), the outer ring (2-2) Set in the inner ring (2-4) on the outer ring (2-2) through the bearing shoulder holes (2-5-1) shoulder end face axially fixing the outer ring (2-2) with the inner ring fitted ball holder (2-3) (2-4) between the ball holder fitted (2-3) on a plurality of balls (2-7), the second specific folder (2-5) with a round-shaped ends (1-3-3) adjacent one end secured to baffle surface (2-1), the outer ring (2-2), the inner ring (2- 4), bead frame (2-3) and a plurality of balls (2-7) through the baffle (2-1) an axial stop, the inner ring (2-4) by the inner hole of the inner circular hole (2-4-1) and the inner tapered bore (2-4-2) constituting, with inner conical hole (2-4-2) of the large diameter end of the inner circular hole (2-4-1) adjacent the second clamp (2-5) connecting hole (2-5-3) within the wall of the hole has two turning holes (2-5-3-1), and a clearance hole (2-5- 3-2), clearance hole (2-5-3-2) is located in the coupling hole (2-5-3) at the bottom of the cell wall, and the clearance hole (2-5-3-2) are provided at two turning middle hole (2-5-3-1), the bushing shoulder holes (2-5-2) built with bush (2-6), bush (2-6) in the top of the hole and turning tail tie.
2. turning thin-wall bullet part both ends of the surface special fixture according to claim 1, is characterized in that: the tube wall of thin-wall circular tube (1-3-2) is uniformly distributed along the circumference and is provided with eight axial long holes (1-3-2-1).
3. turning thin-wall bullet part both ends of the surface special fixture according to claim 1, is characterized in that: the seam of slit (1-3-2-2) is wide is 2 ~ 3mm.
4. the turning thin-wall bullet part both ends of the surface special fixture according to claim 1,2 or 3, is characterized in that: the wall thickness of thin-wall circular tube (1-3-2) is 3 ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110256135.0A CN102962704B (en) | 2011-08-31 | 2011-08-31 | Special fixture for turning two end surfaces of thin-wall conical part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110256135.0A CN102962704B (en) | 2011-08-31 | 2011-08-31 | Special fixture for turning two end surfaces of thin-wall conical part |
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| CN102962704A CN102962704A (en) | 2013-03-13 |
| CN102962704B true CN102962704B (en) | 2014-12-31 |
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| CN104209779B (en) * | 2014-09-15 | 2018-04-17 | 北京理工大学 | Guided missile heat shroud vacuum adsorption fixture |
| CN105014294A (en) * | 2015-07-28 | 2015-11-04 | 成都市松川金属材料有限公司 | Cone-shaped tube machining and locating device |
| CN106216713A (en) * | 2016-08-15 | 2016-12-14 | 安徽东风机电科技股份有限公司 | A kind of improvement thin-wall conical spinning part car machining on spherical end method |
| CN109128885B (en) * | 2018-09-29 | 2023-05-26 | 山西江淮重工有限责任公司 | Thin-wall cylindrical workpiece outer circle turning and clamping tool and clamping method |
| CN109968242A (en) * | 2019-04-09 | 2019-07-05 | 济南大学 | A kind of flexible fixture suitable for tapered radome |
| CN111014730B (en) * | 2019-11-27 | 2022-02-01 | 宁国市正德橡塑制品有限公司 | Instrument trolley for aluminum pipe blanking processing and using method thereof |
| CN114749969B (en) * | 2022-03-18 | 2023-06-02 | 大连理工大学 | Conical thin-wall part tool and positioning method |
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| CN102962704A (en) | 2013-03-13 |
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