CN212665535U - Clamp for turning - Google Patents

Abstract

The utility model provides a fixture for lathing, which comprises a base, an inner cone, a locking nut, a screw rod, a spreading block and a tension spring, wherein the right side of the base is provided with a central bulge, and the left side of the inner cone is provided with a central groove and is connected with the base through the screw rod and the locking nut; the outer cylindrical surface of the inner cone is an inner cone conical surface which inclines outwards from left to right, a plurality of expansion blocks are uniformly distributed on the right side of the base along the circumferential direction and can move along the radial direction, and the inner cylindrical surface of each expansion block is an inner conical surface of each expansion block in wedge-shaped fit with the inner cone conical surface; the tail end of the outer rim of the wheel to be machined is clamped between the expanding block and the base bulge, the outer side plane of the outer rim of the wheel to be machined is limited on the right end face of the base bulge, and the inner side surface of the outer rim of the wheel to be machined, which is opposite to the outer side plane, is a surface to be machined. The utility model has the advantages of reasonable design, the work piece atress is even, eliminates the sword phenomenon that shakes, the utility model discloses concentric with the lathe main shaft, solved the alignment problem.

Description

Clamp for turning

Technical Field

The utility model relates to a machining technology field, concretely relates to anchor clamps for car processing.

Background

The structure of the outer rim for tubeless wheels pressed by steel plates is shown in fig. 1, and the inner side surface is generally processed by a three-jaw chuck, but the jaws of the three-jaw chuck are narrow, the contact surface with the outer rim is small, the vibration of a tool is serious during the processing, and the processing size is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anchor clamps for car processing solves sword, the unstable problem of size that shakes.

In order to solve the above technical problem, an embodiment of the present invention provides the following solutions:

a turning clamp comprises a base, an inner cone, a locking nut, a screw, an expansion block and a tension spring, wherein the base is connected with a lathe spindle, a central bulge is arranged on the right side of the base, a central groove in sliding fit with the central bulge is arranged on the left side of the inner cone, and the inner cone is connected with the base through the screw and the locking nut;

the outer cylindrical surface of the inner cone is an inner cone conical surface which inclines outwards from left to right, a plurality of base bulges which are uniformly distributed along the circumferential direction are integrally formed on the outer edge of the right side of the base, a plurality of expanding blocks are uniformly connected to the right side of the base along the circumferential direction and can move on the right side surface of the base along the radial direction, the expanding blocks are positioned on the outer side of the inner cone and on the inner side of the base bulges, the inner cylindrical surface of each expanding block is an expanding block inner conical surface which is in wedge fit with the inner cone conical surface, an annular groove is formed in the outer cylindrical surface of each expanding block, and the tension spring is embedded in the annular groove;

the tail end of the outer rim of the wheel to be machined is clamped between the expanding block and the base bulge, the outer side plane of the outer rim of the wheel to be machined is limited on the right end face of the base bulge, and the inner side surface of the outer rim of the wheel to be machined, which is opposite to the outer side surface, is a surface to be machined.

And a positioning hole for positioning is arranged on the left side surface of the base.

Furthermore, a first threaded hole used for being connected with a lathe spindle is formed in the left side face of the base.

The base is provided with a plurality of second threaded holes which are uniformly distributed along the circumferential direction, the expansion block is connected with the base through the cylindrical-head inner hexagonal shaft shoulder screw, the expansion block is provided with an expansion block through hole, the cylindrical-head inner hexagonal shaft shoulder screw penetrates through the expansion block through hole and then is in threaded connection with the second threaded holes, and the aperture of the expansion block through hole is larger than the outer diameter of the cylindrical-head inner hexagonal shaft shoulder screw.

The outer cylindrical surface of the expansion block is an expansion block outer conical surface which inclines from left to right, and the expansion block outer conical surface is attached to the inner side surface of the tail end of the outer rim of the wheel to be processed.

The screw rod is provided with an annular bulge, the central bulge is provided with a base through hole, the screw rod is provided with a left section of thread and a right section of thread, the left section of thread of the screw rod penetrates through the base through hole from right to left and is in threaded connection with a locking nut, and the annular bulge is limited on the right side of the central bulge;

and an inner cone threaded hole is formed in the inner cone, and the right section of threads are in threaded connection with the inner cone threaded hole.

Furthermore, a washer is arranged between the right side of the locking nut and the central bulge.

The above technical scheme of the utility model at least include following beneficial effect:

the above technical scheme of the utility model, structural design is reasonable, and the work piece atress is even, eliminates the sword phenomenon that shakes, the utility model discloses concentric with the lathe main shaft, solved the alignment problem.

Drawings

Fig. 1 is a schematic structural view of an outer rim for a wheel in the background art of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a front view of the base of the present invention;

fig. 4 is a side view of the base of the present invention;

FIG. 5 is a front view of the distribution of the expanding blocks of the present invention;

fig. 6 is a side view of the distribution of the expanding blocks of the present invention.

Description of reference numerals:

1. a base; 11. positioning holes; 12. a first threaded hole; 13. a second threaded hole; 14. the base is raised; 15. a central bulge; 2. an inner cone; 3. a gasket; 4. locking the nut; 5. a screw; 51. an annular projection; 6. expanding blocks; 7. a socket head cap shoulder screw; 8. a tension spring; 9. the outer wheel rim of the wheel to be processed; 91. and (5) processing the noodles.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The utility model discloses in used left side, right side etc. show the direction and are only for the convenience describes the product structure, not the utility model discloses direction during the in-service use.

As shown in fig. 2, the embodiment of the utility model provides an anchor clamps for lathe work, including base 1, inner cone 2, lock nut 4, screw rod 5, expand piece 6 and extension spring 8, be equipped with locating hole 11 and first screw hole 12 on the left surface of base 1, locating hole 11 is used for the location of anchor clamps, through with the hexagon socket head cap screw connection of first screw hole 12 spiro union on the lathe main shaft.

The right side of the base 1 is provided with a central bulge 15, and the left side of the inner cone 2 is provided with a central groove 21 which is in sliding fit with the central bulge 15 and is connected with the base 1 through a screw rod 5 and a locking nut 4.

Be equipped with annular arch 51 on the screw rod 5, be equipped with the base through-hole on the protruding 15 in center, be equipped with left section screw thread and right section screw thread on the screw rod 5, its left section screw thread and lock nut 4 spiro union after the screw rod 5 passes the base through-hole from the right side left, are equipped with packing ring 3 between lock nut 4's the right side and the protruding 15 in center, the protruding 51 right side in the protruding 15 in center of annular is spacing. And an inner cone threaded hole is formed in the inner cone 2, and the right section of threads are in threaded connection with the inner cone threaded hole.

The outer cylindrical surface of the inner cone 2 is an inner cone conical surface which inclines outwards from left to right.

As shown in fig. 3-6, the right side outer fringe integrated into one piece of base 1 has 6 base archs 14 along circumference equipartition, and 6 expand the piece 6 along circumference equipartition ground connect in the right side of base 1 and can radially move on the right flank of base 1, and expand the piece 6 and be located the outside of inner cone 2, the inboard of base arch 14, expand the inner cylinder face of piece 6 for with the inner cone conical surface wedge-shaped complex expand the interior conical surface of piece, be equipped with the ring channel on the outer cylinder face of expanding the piece 6, extension spring 8 inlays the dress in the ring channel, under the effect of extension spring 8, inwards contracts.

The tail end of the wheel outer rim 9 to be machined is clamped between the expanding block 6 and the base bulge 14, the outer cylindrical surface of the expanding block 6 is an expanding block outer conical surface which inclines from left to right, and the expanding block outer conical surface is attached to the inner side surface of the tail end of the wheel outer rim 9 to be machined.

The outer side plane of the wheel outer rim 9 to be processed is limited on the right end face of the base bulge 14, and the inner side surface of the wheel outer rim 9 to be processed, which is opposite to the outer side surface, is a surface 91 to be processed.

In this embodiment, 6 second threaded holes 13 uniformly distributed along the circumferential direction are formed in the base 1, the expansion block 6 is connected with the base 1 through the cylindrical head hexagon socket head cap shaft shoulder screw 7, an oval expansion block through hole is formed in the expansion block 6, the cylindrical head hexagon socket head cap shaft shoulder screw 7 penetrates through the expansion block through hole and then is in threaded connection with the second threaded hole 13, and the aperture of the expansion block through hole is larger than the outer diameter of the cylindrical head hexagon socket head cap shaft shoulder screw 7.

The utility model discloses a theory of operation does: the screw rod 5 is rotated to drive the inner cone 2 to move towards the base 1, the conical surface of the inner cone is in wedge-shaped fit with the inner conical surface of the expanding block 6 and slides relatively, so that the expanding block 6 expands outwards, and the tail part of the inner side surface of the outer rim 9 of the wheel to be processed is pressed tightly. And starting the lathe, carrying out lathe machining on the shape surface on the upper part of the inner side of the outer rim 9 of the wheel to be machined, clamping the rear lathe to machine a non-vibrating cutter due to the positioning of the outer side plane, and ensuring uniform and stable machining size and good shape surface size consistency.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. A turning fixture is characterized by comprising a base, an inner cone, a locking nut, a screw, a spreading block and a tension spring, wherein the base is connected with a lathe spindle, a central bulge is arranged on the right side of the base, a central groove in sliding fit with the central bulge is arranged on the left side of the inner cone, and the inner cone is connected with the base through the screw and the locking nut;

the outer cylindrical surface of the inner cone is an inner cone conical surface which inclines outwards from left to right, a plurality of base bulges which are uniformly distributed along the circumferential direction are integrally formed on the outer edge of the right side of the base, a plurality of expanding blocks are uniformly connected to the right side of the base along the circumferential direction and can move on the right side surface of the base along the radial direction, the expanding blocks are positioned on the outer side of the inner cone and on the inner side of the base bulges, the inner cylindrical surface of each expanding block is an expanding block inner conical surface which is in wedge fit with the inner cone conical surface, an annular groove is formed in the outer cylindrical surface of each expanding block, and the tension spring is embedded in the annular groove;

the tail end of the outer rim of the wheel to be machined is clamped between the expanding block and the base bulge, the outer side plane of the outer rim of the wheel to be machined is limited on the right end face of the base bulge, and the inner side surface of the outer rim of the wheel to be machined, which is opposite to the outer side surface, is a surface to be machined.

2. The jig for lathe machining according to claim 1, wherein a positioning hole for positioning is provided on a left side surface of the base.

3. The turning jig according to claim 1 or 2, wherein a first threaded hole for connection to a lathe spindle is provided on a left side surface of the base.

4. The turning clamp according to claim 1, wherein the base is provided with a plurality of second threaded holes which are uniformly distributed along the circumferential direction, the expansion block is connected with the base through a cylindrical head hexagon socket head shoulder screw, the expansion block is provided with an expansion block through hole, the cylindrical head hexagon socket head shoulder screw penetrates through the expansion block through hole and then is in threaded connection with the second threaded holes, and the aperture of the expansion block through hole is larger than the outer diameter of the cylindrical head hexagon socket head shoulder screw.

5. The turning clamp according to claim 1, wherein the outer cylindrical surface of the expansion block is an expansion block outer tapered surface which is inclined from left to right, and the expansion block outer tapered surface is attached to the inner side surface of the tail end of the outer rim of the wheel to be processed.

6. The turning clamp according to claim 1, wherein the screw is provided with an annular protrusion, the central protrusion is provided with a base through hole, the screw is provided with a left section of thread and a right section of thread, the screw passes through the base through hole from right to left, the left section of thread is in threaded connection with the lock nut, and the annular protrusion is limited on the right side of the central protrusion;

and an inner cone threaded hole is formed in the inner cone, and the right section of threads are in threaded connection with the inner cone threaded hole.

7. The turning jig according to claim 1 or 6, wherein a washer is provided between the right side of the lock nut and the central boss.

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