CN215470491U

CN215470491U - Eccentric clamp

Info

Publication number: CN215470491U
Application number: CN202121829151.XU
Authority: CN
Inventors: 刘庆松; 司实现; 楚晨浩; 龚松伟
Original assignee: Yituo Luoyang Hydraulic Transmission Co ltd
Current assignee: Yituo Luoyang Hydraulic Transmission Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-01-11
Anticipated expiration: 2031-08-06

Abstract

The utility model relates to an eccentric clamp in the technical field of camshaft machining, which comprises a body, an inner positioning sleeve and a positioning sleeve, wherein the handle part of the body is provided with Morse taper, the head end surface of the body is provided with a large eccentric hole along the axial direction of the body, the new central axis of the large eccentric hole is coaxial with the central axis of the handle part of the body with the Morse taper, the positioning sleeve is fixedly arranged in the large eccentric hole, and the bottom of the large eccentric hole is provided with a small-diameter hole coaxial with the large eccentric hole. The utility model can be arranged on grinding machines of various types; the length for clamping the camshaft is increased, so that the camshaft is more stable to process; the inner part of the body can be prevented from being abraded, and after the long-time use, only the inner positioning sleeve and the positioning sleeve need to be replaced, so that the production cost is reduced; both ends of the cam shaft can be clamped; coaxial bolt extrudees interior position sleeve and position sleeve, and then makes and press from both sides tight camshaft, when can preventing to press from both sides tight camshaft, the camshaft produces the deviation, has improved the machining precision.

Description

Eccentric clamp

Technical Field

The utility model relates to the technical field of camshaft machining, in particular to an eccentric clamp.

Background

The camshaft is widely applied to various products to realize conversion from rotary motion to reciprocating motion, and camshaft parts are typical structural parts in machining, such as automobile engine camshafts, air conditioner camshafts and the like. Since the camshaft is machined by machining the rotating surface of the non-rotating part, a special fixture is needed for positioning, and the eccentric rotating shaft is converted into a positive rotating shaft for rotating machining.

At present, an existing partial grinding machine cannot finish grinding of an eccentric circle on a cam of a cam shaft, for example, an Amacr cam grinding machine is not provided with an axial measuring function, so that two shoulder blades of the cam cannot be ground, and if the axial measuring device is added, the cost is high, and an eccentric clamp is provided for solving the problem.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above problems, and an object of the present invention is to provide an eccentric jig.

The utility model realizes the purpose through the following technical scheme:

the eccentric fixture comprises a body, an inner positioning sleeve and a positioning sleeve, wherein the handle part of the body has Morse taper, the head end surface of the body is provided with a large eccentric hole along the axial direction of the body, the positioning sleeve is fixedly arranged in the large eccentric hole, the bottom of the large eccentric hole is provided with a small-diameter hole coaxial with the large eccentric hole, the inner part of the small-diameter hole is provided with the inner positioning sleeve capable of rotating along the central axis of the small-diameter hole, the side wall of the inner positioning sleeve is provided with the positioning hole, the outer side of the small-diameter hole is provided with a radial and coaxial mounting through hole, the inner parts of the two mounting through holes are respectively provided with a bolt capable of penetrating through the positioning hole on the inner positioning sleeve, one end of the bolt extends to the outer side of the body, the outer side of the small-diameter hole is also provided with a radial and coaxial threaded through hole, and the threaded through hole is perpendicular to the mounting through hole; the outer side of the large eccentric hole is also provided with a thread through hole which is radial and coaxial, and bolts used for clamping materials to be processed are matched in all the thread through holes.

Preferably, the bushings are fixedly mounted inside the two mounting through holes, and the plug pin is in sliding fit inside the bushings.

Preferably, the bushing is attached inside the mounting through hole by a screw a.

Preferably, the inner end of the bolt is provided with a top head with a diameter larger than that of the bolt and capable of penetrating through the positioning hole in the inner positioning sleeve, a necking is formed in the outer end of the bushing, and a pressure spring is sleeved on the bolt body between the top head of the bolt and the necking of the bushing.

Preferably, the outer end of the bolt is fixedly provided with a handle through a cylindrical pin.

Preferably, the head terminal surface of body is seted up along the radial keyway A of big eccentric orfice, sets up the keyway B that corresponds with this keyway on the lateral wall of position sleeve outer end, and keyway A and keyway B are inboard to be matched with the navigation key through the fix with screw B.

Has the advantages that:

1. the handle part of the body has Morse taper, so that the body can be arranged on grinding machines of various models;

2. the arrangement of the large eccentric hole and the small diameter hole increases the clamping length of the camshaft, so that the camshaft is more stable to process;

3. the arrangement of the inner positioning sleeve and the positioning sleeve can prevent the inner part of the body from being worn, and after the inner positioning sleeve and the positioning sleeve are used for a long time, only the inner positioning sleeve and the positioning sleeve need to be replaced, so that the production cost is reduced;

4. the angle of the inner positioning sleeve can be adjusted, so that the device can clamp both ends of the camshaft, and the practicability is improved;

5. coaxial bolt extrudees interior position sleeve and position sleeve, and then makes and press from both sides tight camshaft, when can preventing to press from both sides tight camshaft, the camshaft produces the deviation, has improved the machining precision.

Additional features of the utility model and advantages thereof will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view A-A of the present invention of FIG. 2 in an as-used state;

FIG. 4 is an enlarged view of the utility model at B in FIG. 3;

fig. 5 is a schematic view of the structure of the tie bar of the present invention.

The reference numerals are explained below:

1. a pull rod; 2. a nut; 3. a first washer; 4. a second washer; 5. a washer number three; 6. a body; 7. a screw A; 8. a pressure spring; 9. a bushing; 10. a cylindrical pin; 11. a bolt; 12. a handle; 13. an inner positioning sleeve; 14. a positioning sleeve; 15. a screw B; 16. a positioning key; 17. And (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the first embodiment, as shown in fig. 1-5, an eccentric fixture comprises a body 6, an inner positioning sleeve 13, and a positioning sleeve 14, wherein a handle of the body 6 has a morse taper, so that the body 6 can be installed on various types of grinding machines, a large eccentric hole is formed on a head end surface of the body 6 along an axial direction of the body, and the positioning sleeve 14 is fixedly installed inside the large eccentric hole, so that abrasion to the large eccentric hole can be reduced, after long-time use, only the positioning sleeve 14 needs to be replaced, so that the production cost is reduced, a small-diameter hole coaxial with the large eccentric hole is formed at the bottom of the large eccentric hole, so that the clamping length is increased, so that the machined camshaft is more stable, the inner positioning sleeve 13 capable of rotating along a central axis of the small-diameter hole is arranged inside the small-diameter hole, and the positioning sleeve 13 is arranged on a side wall, so that abrasion to the small-diameter hole can be reduced, after long-time use, only the inner positioning sleeve 13 needs to be replaced, the production cost is reduced, the rotation of the inner positioning sleeve 13 can respectively clamp the two ends of the cam, the practicability is increased, the radial and coaxial mounting through holes are formed in the outer side of the small-diameter hole, the bolts 11 which can penetrate through the positioning holes in the inner positioning sleeve 13 are arranged in the two mounting through holes, one end of each bolt 11 extends to the outer side of the body 6, so that one end of each bolt 11 can extend into the inner positioning sleeve 13 to position the inner positioning sleeve 13 and the cam shaft, the radial and coaxial threaded through holes are formed in the outer side of the small-diameter hole, and the threaded through holes are perpendicular to the mounting through holes, so that the operation is convenient; the big eccentric orfice outside also is equipped with along its radial, and coaxial screw through hole, and the screw through hole outside the minor diameter hole and the big eccentric orfice outside is inside all to cooperate to have the bolt 17 that is used for pressing from both sides tight material of treating processing, can utilize bolt 17 to extrude interior position sleeve 13 and position sleeve 14 like this, and then makes the tight camshaft of clamp.

In the second embodiment, on the basis of the first embodiment, as shown in fig. 3 and 4, the bushings 9 are fixedly installed inside the two installation through holes, and the bolts 11 are in sliding fit inside the bushings 9, so that abrasion to the installation through holes can be reduced, after the installation through holes are used for a long time, only the bushings 9 need to be replaced, and the production cost is reduced.

In the third embodiment, on the basis of the second embodiment, as shown in fig. 3 and 4, the bushing 9 is connected inside the mounting through hole through a screw a7, so that the bushing 9 is detachable.

Fourth embodiment, on the basis of the second embodiment, as shown in fig. 3 and 4, the inner end of the bolt 11 is provided with a plug having a diameter larger than that of the bolt 11 and capable of penetrating through the positioning hole of the inner positioning sleeve 13, the outer end of the bushing 9 is provided with a throat, and a pressure spring 8 is sleeved on the body of the bolt 11 between the plug and the throat of the bushing 9, so that the bolt 11 can automatically extend into the positioning hole of the inner positioning sleeve 13 under the action of the pressure spring 8 to position the inner positioning sleeve 13, and the bolt 11 can be prevented from being separated from the positioning hole of the inner positioning sleeve 13 when the body 6 rotates.

Fifth embodiment, on the basis of the first embodiment, as shown in fig. 1 and 3, a handle 12 is fixedly installed at the outer end of the bolt 11 through the cylindrical pin 10, so that the bolt 11 can be conveniently pulled out from the positioning hole on the inner positioning sleeve 13.

Sixth embodiment, on the basis of first embodiment, as shown in fig. 3, the head end face of the body 6 is provided with a key groove a along the radial direction of the large eccentric hole, the outer end side wall of the positioning sleeve 14 is provided with a key groove B corresponding to the key groove, the inner sides of the key groove a and the key groove B are fixedly matched with the positioning key 16 through a screw B15, so that the positioning key 16 can be used for axially positioning the positioning sleeve 14, the positioning sleeve 14 is prevented from rotating, and the positioning key 16 and the positioning sleeve 14 are convenient to replace.

In the structure, during the use, at first install the stalk portion of body 6 on the grinding machine, utilize pull rod 1 on the grinding machine, nut 2, packing ring 3, No. two packing rings 4 and No. three packing rings 5 to fix and fix the stalk portion of body 6, then insert the one end of camshaft in interior position sleeve 13 and position sleeve 14, then rotate bolt 17, bolt 17 extrudees interior position sleeve 13 and position sleeve 14, make the camshaft fixed, then the board can be processed, when processing the cam of the other end, at first remove the restriction of rotating bolt 11 to interior position sleeve 13, then rotate interior position sleeve 13, make interior position sleeve 13 rotate 180 degrees, then utilize bolt 11 to restrict to interior position sleeve 13 again, it can to utilize above-mentioned principle to fix the camshaft afterwards.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Eccentric anchor clamps, its characterized in that: the novel positioning device comprises a body (6), an inner positioning sleeve (13) and a positioning sleeve (14), wherein the handle part of the body (6) has Morse taper, a large eccentric hole along the axial direction of the large eccentric hole is formed in the end face of the head part of the body (6), the positioning sleeve (14) is fixedly installed in the large eccentric hole, a small-diameter hole coaxial with the large eccentric hole is formed in the bottom of the large eccentric hole, the inner positioning sleeve (13) capable of rotating along the central axis of the small-diameter hole is arranged in the small-diameter hole, the positioning hole is formed in the side wall of the inner positioning sleeve (13), radial mounting through holes are formed in the outer side of the small-diameter hole and are coaxial, a bolt (11) capable of penetrating through the positioning hole in the inner positioning sleeve (13) is arranged in each of the two mounting through holes, one end of the bolt (11) extends to the outer side of the body (6), a radial threaded through hole is further formed in the outer side of the small-diameter hole and is coaxial with the mounting through hole, and the threaded through hole is perpendicular to the mounting through hole; the outer side of the large eccentric hole is also provided with a thread through hole which is radial and coaxial, and bolts (17) used for clamping materials to be processed are matched in all the thread through holes.

2. The eccentric clamp according to claim 1, characterized in that: inside equal fixed mounting of two installation through-holes has bush (9), and bolt (11) sliding fit is inside bush (9).

3. The eccentric clamp according to claim 2, characterized in that: the bush (9) is connected inside the mounting through hole through a screw A (7).

4. The eccentric clamp according to claim 2, characterized in that: the inner end of the bolt (11) is provided with a top with a diameter larger than that of the bolt (11) and capable of penetrating through the positioning hole in the inner positioning sleeve (13), the outer end of the bushing (9) is provided with a necking, and the bolt (11) is positioned between the top and the necking of the bushing (9) and is sleeved with a pressure spring (8).

5. The eccentric clamp according to claim 1, characterized in that: the outer end of the bolt (11) is fixedly provided with a handle (12) through a cylindrical pin (10).

6. The eccentric clamp according to claim 1, characterized in that: the head terminal surface of body (6) is seted up along the radial keyway A of big eccentric orfice, sets up the keyway B that corresponds with this keyway on the lateral wall of position sleeve (14) outer end, and keyway A and keyway B inboard are fixed to be matchd through screw B (15) and are had positioning key (16).