CN217860176U

CN217860176U - Eccentric sleeve clamp

Info

Publication number: CN217860176U
Application number: CN202221663997.5U
Authority: CN
Inventors: 史红艳; 黄华; 夏静文; 来伶丽
Original assignee: Shanxi Engineering Vocational College
Current assignee: Shanxi Engineering Vocational College
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-22
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses an eccentric cover anchor clamps, include: the connecting shaft is fixed with the main shaft and the circular truncated cone respectively, and the axial lead of the connecting shaft and the axial lead of the circular truncated cone have an eccentric distance; the elastic sleeve is tightly sleeved on the circular truncated cone, and the eccentric sleeve is tightly sleeved on the outer side of the elastic sleeve; the clamping sleeve is fixedly sleeved on the connecting shaft, a hole is formed in the side wall of the clamping sleeve, a puller bolt is screwed on the hole, one end of the eccentric sleeve is limited in the clamping sleeve, and the puller bolt can jack the outer side wall of the eccentric sleeve tightly. The utility model discloses set up connecting axle, round platform and elastic sleeve, connecting axle and round platform eccentric arrangement, eccentric cover suit is sheathe in the elastic sleeve, and what above-mentioned setting can ensure that eccentric cover can be reliably on the one hand is pressed from both sides tightly, and on the other hand eccentric cover can realize from centering for the centre of rotation of eccentric cover lateral wall and the rotation center collineation of main shaft can ensure that eccentric cover can not take place to warp at the in-process of processing when guaranteeing the machining precision.

Description

Eccentric sleeve clamp

Technical Field

The utility model relates to the field of machining, more specifically say so and relate to an eccentric cover anchor clamps.

Background

The processing of high-precision thin-wall eccentric sleeve parts is a technical difficulty in manufacturing technology, thin-wall eccentric sleeves are thin in wall and poor in rigidity, the parts are easy to deform in the turning and grinding processes, the eccentricity between an excircle rotation center and an inner hole rotation center is small in size and high in precision, positioning and clamping are difficult, the size precision, the form precision and the surface quality of the parts are difficult to guarantee, and when the parts are produced in batches, the finished products are low in qualification rate and unstable in quality, and the problems are technical difficulties and bottle necks in processing.

Therefore, how to provide an eccentric sleeve clamp to overcome the above problems is a problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an eccentric cover anchor clamps.

In order to realize the purpose, the utility model adopts the following technical scheme:

an eccentric bushing clamp which is installed on a spindle of a machine tool and clamps an eccentric bushing, comprising: the clamping device comprises a connecting shaft, a circular truncated cone, an elastic sleeve, a clamping sleeve and a jacking bolt, wherein one end of the connecting shaft is coaxially fixed with the main shaft, the other end of the connecting shaft is fixed with the large-diameter end of the circular truncated cone, the axis of the connecting shaft is parallel to the axis of the circular truncated cone, and an eccentric distance is formed between the axis of the connecting shaft and the axis of the circular truncated cone; the inner side surface of the elastic sleeve is a conical surface, the elastic sleeve is sleeved on the circular truncated cone, the inner side surface of the elastic sleeve is tightly attached to the outer side surface of the circular truncated cone, and the eccentric sleeve is tightly sleeved on the outer side of the elastic sleeve; the clamping sleeve is coaxially sleeved and fixed on the connecting shaft, a hole is formed in the side wall of the clamping sleeve, the puller bolt is screwed on the hole, one end, far away from the circular truncated cone, of the eccentric sleeve is limited in the clamping sleeve, and the puller bolt can jack the outer side wall of the eccentric sleeve tightly.

According to the technical scheme, compared with the prior art, the utility model discloses an eccentric sleeve fixture is provided, the utility model discloses a set up connecting axle, round platform and elastic sleeve, connecting axle and round platform eccentric arrangement, eccentric sleeve suit is on the elastic sleeve and utilize the tight bolt of top to push up tightly, on the one hand can ensure that eccentric sleeve can be reliably clamped, on the other hand eccentric sleeve can realize from the centering, make the centre of gyration of eccentric sleeve lateral wall and the rotation center collineation of main shaft, can ensure that eccentric sleeve can not take place to warp in the course of processing when guaranteeing the machining precision; additionally, the utility model discloses simple structure, eccentric cover easy dismounting, it is applicable in eccentric cover's batch processing.

Preferably, one end of the elastic sleeve is uniformly provided with a plurality of first U-shaped notches in the circumferential direction, the other end of the elastic sleeve is uniformly provided with a plurality of second U-shaped notches in the circumferential direction, and the plurality of first U-shaped notches and the plurality of second U-shaped notches are arranged in a staggered mode. The elastic sleeve is ensured to have good elasticity by the arrangement, and the eccentric sleeve can realize self-centering in the process of being sleeved with the elastic sleeve.

Preferably, the number of the puller bolts is two, the two puller bolts are coaxially arranged, and the axial line of the puller bolt is coplanar with the axial line of the clamping sleeve. This arrangement ensures that the puller bolt can reliably jack the eccentric sleeve.

Preferably, the clamping device further comprises a taper pin, a U-shaped groove is formed in the outer side wall of the clamping sleeve, a first taper hole penetrating through the outer side wall of the clamping sleeve is formed in the clamping sleeve, the first taper hole corresponds to the bottom of the U-shaped groove, a second taper hole is formed in the outer side wall of the connecting shaft, the taper pin penetrates through the first taper hole and the second taper hole simultaneously, and an internal thread hole is formed in the middle of the large-diameter end of the taper pin. Set up the taper pin and can ensure that clamping sleeve and connecting axle reliably install, the purpose that sets up U-shaped groove and internal thread hole is convenient for carry out the dismouting to the taper pin.

Preferably, the U-shaped groove is provided with two U-shaped grooves which are symmetrically arranged about the axial lead of the clamping sleeve. This setting is convenient for carry out the dismouting to the taper pin.

Preferably, the outer side wall of the elastic sleeve is tightly abutted with the inner side wall of the eccentric sleeve, and one end, far away from the clamping sleeve, of the elastic sleeve is tightly abutted with the inner end wall of the eccentric sleeve. The eccentric sleeve is tightly sleeved on the elastic sleeve, and self-centering of the eccentric sleeve can be realized.

Preferably, a first scribed line is integrally formed on the outer side wall of the clamping sleeve and is parallel to the axis of the clamping sleeve, a second scribed line is integrally formed on the outer wall of the connecting shaft and is parallel to the axis of the connecting shaft, and the first scribed line and the second scribed line are collinear. The purpose of the arrangement is that the clamping sleeve can be quickly and accurately sleeved on the connecting shaft.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic sectional view of an eccentric sleeve clamp connected to a main shaft and an eccentric sleeve, respectively;

FIG. 2 is a right side view of an eccentric sleeve clamp coupled to an eccentric sleeve;

FIG. 3 is a partial front view of an eccentric sleeve clamp;

FIG. 4 is a front view of a connecting shaft in an eccentric bushing fixture;

FIG. 5 is a cross-sectional view of a clamping sleeve in an eccentric sleeve clamp;

FIG. 6 is a partial cross-sectional view of a tapered pin in an eccentric bushing clamp;

fig. 7 is a sectional view of an eccentric sleeve clamped and fixed by the eccentric sleeve clamp.

In the figure:

the device comprises a main shaft 1, an eccentric sleeve 2, a connecting shaft 3, a first shaft section 30, a second shaft section 31, a third shaft section 32, a circular truncated cone 4, an elastic sleeve 5, a U-shaped opening I50, a U-shaped opening II 51, a clamping sleeve 6, a U-shaped groove 60, a conical hole I61, a puller bolt 7, a conical pin 8, an internal thread hole 80, a scribed line I9 and a scribed line II 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses an eccentric bushing clamp, the utility model discloses a set up connecting axle 3, round platform 4 and elastic sleeve 5, connecting axle 3 and round platform 4 eccentric arrangement, eccentric sleeve 2 suit is tight on elastic sleeve 5 and utilize the tight bolt 7 top of top tightly, can ensure on the one hand that eccentric sleeve 2 can be reliably clamped, on the other hand eccentric sleeve 2 can realize from the centering, make the centre of rotation of eccentric sleeve 2 lateral wall and the rotation center collineation of main shaft 1, can ensure that eccentric sleeve 2 can not take place to warp in the in-process of processing when guaranteeing the machining precision; in addition, the utility model has simple structure, the eccentric sleeve 2 is convenient to be assembled and disassembled, and the eccentric sleeve 2 can be suitable for batch processing of the eccentric sleeve 2; by providing the conical pin 8, this arrangement ensures a reliable fixing of the clamping sleeve 6 to the connecting shaft 3.

Examples

Referring to fig. 1-7 for the overall and partial structural schematic diagrams of an embodiment of the present invention, the present invention specifically discloses an eccentric sleeve clamp, which is installed on the main shaft 1 of a machine tool and clamps an eccentric sleeve 2, wherein the two ends of the eccentric sleeve 2 are open, and the eccentric sleeve clamp comprises:

the device comprises a connecting shaft 3, a circular truncated cone 4, an elastic sleeve 5, a clamping sleeve 6 and a puller bolt 7;

the connecting shaft 3 is a step shaft, the connecting shaft 3 comprises a first shaft section 30, a second shaft section 31 and a third shaft section 32 which are coaxial, the outer side wall of the first shaft section 30 is conical, the first shaft section 30 is coaxially inserted into the hollow main shaft 1, one end, far away from the second shaft section 31, of the third shaft section 32 is fixed with the large-diameter end of the circular truncated cone 4, the shaft axis of the connecting shaft 3 is parallel to the shaft axis of the circular truncated cone 4, an eccentric distance is formed between the shaft axis and the circular truncated cone 4, and the eccentric distance is the same as that of the eccentric sleeve 2;

the inner side surface of the elastic sleeve 5 is a conical surface, the outer side surface of the elastic sleeve 5 is a cylindrical surface, the length of the elastic sleeve 5 is smaller than the height of the circular truncated cone 4, the elastic sleeve 5 is sleeved on the circular truncated cone 4, the inner side surface of the elastic sleeve 5 is tightly attached to the outer side surface of the circular truncated cone 4, the outer side surface of the elastic sleeve 5 is tightly sleeved with the eccentric sleeve 2, the outer side wall of the elastic sleeve 5 is tightly abutted to the inner side wall of the eccentric sleeve 2, one end, away from the main shaft 1, of the elastic sleeve 5 is tightly abutted to the inner end wall of the eccentric sleeve 2, and one end surface, away from the main shaft 1, of the eccentric sleeve 2 and the local outer side surface of the eccentric sleeve 2 are surfaces to be processed;

the clamping sleeve 6 is coaxially sleeved on the connecting shaft 3, a hole is formed in the side wall of the clamping sleeve and a puller bolt 7 is screwed, the clamping sleeve 6 corresponds to the third shaft section 32 in position, one end, far away from the circular truncated cone 4, of the eccentric sleeve 2 is limited in the clamping sleeve 6, the puller bolt 7 can jack the outer side wall of the eccentric sleeve 2 tightly, namely the eccentric sleeve 2 is firstly sleeved on the elastic sleeve 5 to be positioned in a self-centering mode, and then the puller bolt 7 is utilized to jack tightly.

Further specifically, a plurality of U-shaped openings 50 have evenly been seted up to the one end circumference of elastic sleeve 5, a plurality of U-shaped openings two 51 have evenly been seted up to the other end circumference of elastic sleeve 5, a plurality of U-shaped openings one 50 and a plurality of U-shaped openings two 51 staggered arrangement, U-shaped opening one 50 and U-shaped openings two 51 shape size are the same completely, the difference only lies in the opening direction of the two difference, through setting up U-shaped opening one 50 and U-shaped openings two 51, can ensure that elastic sleeve 5 possesses good elasticity.

More specifically, two puller bolts 7 are arranged, the two puller bolts 7 are arranged coaxially, and the axial lead of the puller bolt 7 is coplanar with the axial lead of the clamping sleeve 6.

Further specifically, still include taper pin 8, the U-shaped groove 60 has been seted up on the lateral wall of clamping sleeve 6, set up the bell mouth 61 that runs through its lateral wall on the clamping sleeve 6, bell mouth 61 corresponds with the tank bottom position in U-shaped groove 60, the bell mouth two has been seted up on the lateral wall of connecting axle 3, bell mouth two corresponds with third shaft section 32 position, taper pin 8 wears to establish simultaneously to bell mouth 61 and bell mouth two in, the internal thread hole 80 has been seted up between two parties to the major diameter end of taper pin 8.

More specifically, the U-shaped groove 60 is provided in two and is arranged symmetrically with respect to the axial center line of the clamping sleeve 6.

More specifically, the outer side wall of the elastic sleeve 5 is tightly abutted with the inner side wall of the eccentric sleeve 2, and one end of the elastic sleeve 5, which is far away from the clamping sleeve 6, is tightly abutted with the inner end wall of the eccentric sleeve 2.

Further specifically, a first scribed line 9 is integrally formed on the outer side wall of the clamping sleeve 6, the first scribed line 9 is parallel to the axis of the clamping sleeve 6, a second scribed line 10 is integrally formed on the outer wall of the connecting shaft 3, the second scribed line 10 corresponds to the third axis segment 32 in position, the second scribed line 10 is parallel to the axis of the connecting shaft 3, and the first scribed line 9 and the second scribed line 10 are collinear.

When the clamp is used, the eccentric sleeve 2 is sleeved on the elastic sleeve 5 to perform self-centering positioning, the outer side wall of the elastic sleeve 5 is ensured to be tightly abutted against the inner side wall of the eccentric sleeve 2, and one end, far away from the main shaft 1, of the elastic sleeve 5 is tightly abutted against the inner end wall of the eccentric sleeve 2; and then screwing a puller bolt 7, wherein the puller bolt 7 tightly props the eccentric sleeve 2, the main shaft 1 drives the eccentric sleeve 2 to rotate, and the rotation center of the outer side wall of the eccentric sleeve 2 is collinear with the rotation center of the main shaft 1.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An eccentric bushing clamp, which is mounted on a spindle (1) of a machine tool and clamps an eccentric bushing (2), characterized by comprising: the clamping device comprises a connecting shaft (3), a circular truncated cone (4), an elastic sleeve (5), a clamping sleeve (6) and a puller bolt (7), wherein one end of the connecting shaft (3) is coaxially fixed with the main shaft (1), the other end of the connecting shaft is fixed with the large-diameter end of the circular truncated cone (4), the axial lead of the connecting shaft (3) is parallel to the axial lead of the circular truncated cone (4), and an eccentric distance is formed between the axial lead of the connecting shaft and the axial lead of the circular truncated cone (4); the inner side surface of the elastic sleeve (5) is a conical surface, the elastic sleeve (5) is sleeved on the circular truncated cone (4), the inner side surface of the elastic sleeve is tightly attached to the outer side surface of the circular truncated cone (4), and the eccentric sleeve (2) is tightly sleeved on the outer side of the elastic sleeve (5); the clamping sleeve (6) is coaxially sleeved and fixed on the connecting shaft (3), a hole is formed in the side wall of the clamping sleeve, the puller bolt (7) is screwed on the hole, one end, far away from the circular truncated cone (4), of the eccentric sleeve (2) is limited in the clamping sleeve (6), and the puller bolt (7) can jack the outer side wall of the eccentric sleeve (2).

2. The eccentric bushing fixture according to claim 1, wherein one end of the elastic bushing (5) is circumferentially and uniformly provided with a plurality of first U-shaped openings (50), the other end of the elastic bushing (5) is circumferentially and uniformly provided with a plurality of second U-shaped openings (51), and the plurality of first U-shaped openings (50) and the plurality of second U-shaped openings (51) are arranged in a staggered manner.

3. The eccentric bushing clamp according to claim 1, characterized in that the tightening bolts (7) are provided in two, two tightening bolts (7) are coaxially arranged, and the axial line of the tightening bolts (7) is coplanar with the axial line of the clamping bushing (6).

4. The eccentric bushing clamp according to claim 1, further comprising a taper pin (8), wherein a U-shaped groove (60) is formed in an outer side wall of the clamping bushing (6), a first taper hole (61) penetrating through the outer side wall of the clamping bushing (6) is formed in the clamping bushing (6), the first taper hole (61) corresponds to a bottom position of the U-shaped groove (60), a second taper hole is formed in an outer side wall of the connecting shaft (3), the taper pin (8) penetrates through the first taper hole (61) and the second taper hole simultaneously, and an internal threaded hole (80) is formed in the middle of a large-diameter end of the taper pin (8).

5. Eccentric bushing clamp according to claim 4, characterized in that the U-shaped groove (60) is provided in two and is arranged symmetrically with respect to the axial center line of the clamping bushing (6).

6. The eccentric bushing clamp according to claim 1, characterized in that the outer side wall of the elastic bushing (5) is tightly abutted with the inner side wall of the eccentric bushing (2), and the end of the elastic bushing (5) far away from the clamping bushing (6) is tightly abutted with the inner end wall of the eccentric bushing (2).

7. The eccentric bushing clamp according to claim 1, characterized in that a first scribed line (9) is integrally formed on the outer side wall of the clamping bushing (6), the first scribed line (9) is parallel to the axis of the clamping bushing (6), a second scribed line (10) is integrally formed on the outer wall of the connecting shaft (3), the second scribed line (10) is parallel to the axis of the connecting shaft (3), and the first scribed line (9) and the second scribed line (10) are collinear.