CN113878495A

CN113878495A - Grinding machine floating claw chuck

Info

Publication number: CN113878495A
Application number: CN202111051597.9A
Authority: CN
Inventors: 刘丰; 孙嘉睿
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-01-04

Abstract

The utility model relates to the field of mechanical manufacturing production, in particular to a grinding machine floating jaw chuck which comprises a base, wherein a mounting groove is formed in the base, the mounting groove is of a convex structure, jaws are arranged in the mounting groove and can be independently adjusted, a universal coupling is movably mounted between the side surfaces of adjacent jaws, and the positions and the states of the jaws can be independently adjusted according to the shape of the surface of a workpiece and the eccentricity by arranging a plurality of independently adjustable jaws and centering mechanisms in the jaws, so that the workpiece can be better and directly clamped, the workpiece does not deviate from a machining center, and other auxiliary mechanisms do not need to be additionally arranged; through the arrangement of the telescopic universal coupling, the position of each clamping jaw can not be independently adjusted, and simultaneously, when the angle of one eccentric clamping wheel is adjusted, the angles of the other eccentric clamping wheels can be synchronously changed, so that the workpiece is convenient to install.

Description

Grinding machine floating claw chuck

Technical Field

The utility model relates to the field of machine manufacturing production, in particular to a floating jaw chuck of a grinding machine.

Background

Chucks are mechanical devices used to clamp workpieces on machine tools. The machine tool accessory clamps and positions a workpiece by utilizing the radial movement of movable clamping jaws uniformly distributed on a chuck body. The chuck generally comprises a chuck body, movable jaws and a jaw driving mechanism 3. The diameter of the chuck body is 65 mm at least and can reach 1500 mm at most, and a through hole is formed in the center of the chuck body so as to facilitate the workpiece or bar stock to pass through; the back part is provided with a cylindrical or short conical structure and is connected with the end part of a main shaft of the machine tool directly or through a flange plate. Chucks are commonly used in lathes, cylindrical grinders and internal grinders, and may also be used in conjunction with various indexing devices for grinding, milling and drilling machines.

The patent of a utility model patent for CN209918922U discloses a three-jaw chuck floats, including chuck, soft claw and unsteady claw, be equipped with soft claw on the chuck, be fixed with unsteady claw through the rotational positioning round pin on the soft claw, soft claw upper surface and unsteady claw inboard are equipped with the product. The floating three-jaw chuck provided by the utility model can clamp a product, so that the product is not easy to fall off in the processing process, each soft jaw is provided with a floating jaw which can float left and right by about 2 degrees, and the floating jaw can be more attached to the surface of the product, so that the processing precision is improved.

Most existing chucks are inconvenient to directly clamp irregular and eccentric workpieces, and other auxiliary mechanisms are required to be additionally installed for clamping. To this end, a grinding machine floating jaw chuck is proposed.

Disclosure of Invention

The utility model aims to provide a floating jaw chuck of a grinding machine, which solves the problem that irregular and eccentric workpieces are inconvenient to directly clamp.

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

the utility model provides a grinding machine floating claw chuck, includes the base, the mounting groove has been seted up on the base, the mounting groove is "protruding" type structure, be provided with the jack catch in the mounting groove, the jack catch can independently be adjusted, and is adjacent movable mounting has universal joint between the side of jack catch.

Preferably, the mounting grooves are provided in a plurality, and the number of the mounting grooves is equal to the number of the clamping jaws.

Preferably, the jack catch includes the claw seat and the claw body, the claw seat includes lock post and column base, the lock post surface is seted up threadedly, and one end has seted up square lockhole, the one end that square lockhole was seted up to the lock post runs through the column base and rotates with the column base to be connected, the one end that the lockhole was kept away from to the lock post is rotated with the one end that the mounting groove is close to inner wall of the base and is connected, one side of inner wall of the base is kept away from in the mounting groove to the column base setting, the claw body is provided with the screw thread near the one end of lock post, the internal portion of claw is provided with aligning mechanism.

Preferably, aligning mechanism includes adjusting bolt and eccentric card wheel, the spout has been seted up in the eccentric card wheel, sliding connection has the slider in the spout, the opening part of spout is equipped with the stopper, be provided with the pivot in the slider, adjusting bolt runs through the claw body and slider, adjusting bolt's head is located the claw external portion, the one end that adjusting bolt kept away from the head is passed through bearing and spout bottom swing joint.

Preferably, the threads on the pawl body mate with threads on the outer surface of the lock cylinder.

Preferably, the adjusting bolt is in threaded connection with the sliding block.

Preferably, the rotating shaft penetrates through the side wall of the claw body and the sliding block simultaneously and is perpendicular to the adjusting bolt, and the adjusting bolt is arranged in different planes and parallel to the end face of the base.

Preferably, an annular groove is formed in the slider by taking the rotating shaft as the center, a coil spring is arranged in the annular groove, one end of the coil spring is fixedly connected with the side wall of the annular groove, and the other end of the coil spring is fixedly connected with the rotating shaft.

Preferably, the claw body is internally provided with a hollow structure, and the internal space can allow the aligning mechanism to rotate.

Preferably, universal joint is retractable, and inner structure can provide the moment of torsion, universal joint's both ends respectively with the both ends fixed connection who corresponds the pivot.

The utility model has the beneficial effects that:

1. the clamping jaws capable of being independently adjusted and the aligning mechanisms in the clamping jaws are arranged, so that the workpiece can be better and directly clamped according to the shape of the surface of the workpiece and the position and the state of the clamping jaws which are independently adjusted in eccentricity, the workpiece does not deviate from a machining center, and other auxiliary mechanisms do not need to be additionally arranged;

2. by arranging the telescopic universal coupling, the position of each clamping jaw can not be independently adjusted, and simultaneously, when the angle of one eccentric clamping wheel is adjusted, the angles of the other eccentric clamping wheels can be synchronously changed, so that the workpiece can be conveniently installed;

3. through setting up the coil spring and connecting pivot and slider, when stirring adjusting bolt and adjusting the angle of eccentric card wheel and installing the work piece additional, the coil spring shrink, install the back coil spring that finishes additional and recover, have a clamp force to the work piece, the tight effect of the clamp of reinforcing chuck.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a front view of a grinding machine floating jaw chuck of the present invention;

FIG. 2 is a left side view of a grinding machine floating jaw chuck of the present invention;

FIG. 3 is a partial cross-sectional view taken along the line A of FIG. 1 of a floating jaw chuck for a grinding machine in accordance with the present invention;

FIG. 4 is a cross-sectional view taken along line B of FIG. 3 of a floating jaw chuck for a grinding machine in accordance with the present invention;

fig. 5 is a schematic structural diagram of an adjusting bolt and a sliding block of the grinding machine floating jaw chuck.

In the figure: the clamp comprises a base 1, a mounting groove 2, a jaw 3, a jaw seat 31, a lock column 311, a column base 312, a square lock hole 313, a jaw body 32, a universal coupling 4, a centering mechanism 5, an adjusting bolt 51, an eccentric clamping wheel 52, a sliding block 53, a rotating shaft 54, a sliding groove 55, a limiting block 56, a coil spring 57 and an annular groove 58.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 5, the grinding machine floating claw chuck comprises a base 1, wherein a mounting groove 2 is formed in the base 1, the mounting groove 2 is of a convex structure, a claw 3 is arranged in the mounting groove 2, the claws 3 can be independently adjusted, and a universal coupling 4 is movably mounted between the side faces of the adjacent claws 3.

Specifically, mounting groove 2 has been seted up a plurality ofly, and mounting groove 2's quantity equals the quantity of jack catch 3, sets up a plurality of independently adjustable jack catches 3, and the user can select the use quantity of jack catch 3 as required.

Specifically, the claw 3 includes a claw seat 31 and a claw body 32, the claw seat 31 includes a lock cylinder 311 and a cylinder base 312, the outer surface of the lock cylinder 311 is provided with a thread, one end of the lock cylinder 311 is provided with a square lock hole 313, the end of the lock cylinder 311 provided with the square lock hole 313 penetrates through the cylinder base 312 and is rotatably connected with the cylinder base 312, the end of the lock cylinder 311 far away from the lock hole is rotatably connected with the end of the mounting groove 2 near the inner wall of the base 1, the cylinder base 312 is arranged at one side of the mounting groove 2 far away from the inner wall of the base 1, one end of the claw body 32 near the lock cylinder 311 is provided with a thread, a centering mechanism 5 is arranged inside the claw body 32, the thread on the claw body 32 is matched with the thread on the outer surface of the lock cylinder 311, a user can use a chuck special key to drive the lock cylinder 311 to rotate, because the lock cylinder 311 is connected with the claw body 32 through the thread, when the lock cylinder 311 rotates, the claw body 32 is driven to move towards the direction near or far away from the center of the base 1, therefore, the position of the claw 3 can be adjusted by changing the rotation direction of the lock cylinder 311, thereby clamping the workpiece.

Specifically, the aligning mechanism 5 includes an adjusting bolt 51 and an eccentric clamping wheel 52, a sliding groove 55 is formed in the eccentric clamping wheel 52, a sliding block 53 is arranged in the sliding groove 55, a limiting block 56 is arranged at an opening of the sliding groove 55, a rotating shaft 54 is arranged in the sliding block 53, the adjusting bolt 51 penetrates through the claw body 32 and the sliding block 53, the adjusting bolt 51 and the sliding block 53 are in threaded connection, the head of the adjusting bolt 51 is located outside the claw body 32, one end of the adjusting bolt 51, which is far away from the head, is movably connected with the bottom of the sliding groove 55 through a bearing, the inside of the claw body 32 is of a hollow structure, the aligning mechanism 5 can be allowed to rotate in the inner space, and a user can move the eccentric clamping wheel 52 to a direction far away from or close to the sliding block 53 by rotating the adjusting bolt 51, therefore, the eccentricity of the eccentric clamping wheel 52 is changed, and the eccentric clamping wheel 52 can be driven to rotate by shifting the adjusting bolt 51 towards the direction close to the base 1, so that the workpiece can be conveniently installed.

Specifically, the rotating shaft 54 penetrates through the side wall of the claw body 32 and the sliding block 53 and is vertically arranged in different planes together with the adjusting bolt 51, the adjusting bolt 51 is parallel to the end face of the base 1, the rotating shaft 54 penetrates through the claw body 32, the universal coupling 4 and the rotating shaft 54 are conveniently installed and fixed, and meanwhile, the interference phenomenon of all parts during working can be avoided by vertically arranging the rotating shaft 54 in different planes.

Specifically, the inside of the slider 53 is provided with an annular groove 58 by taking the rotating shaft 54 as a center, a coil spring 57 is arranged in the annular groove 58, one end of the coil spring 57 is fixedly connected with the side wall of the annular groove 58, the other end of the coil spring is fixedly connected with the rotating shaft 54, when the rotating shaft 54 rotates, the coil spring 57 contracts, and after a workpiece is installed, the adjusting bolt 51 is loosened, and the coil spring 57 starts to restore, so that the eccentric clamping wheel 52 is tightly attached to the workpiece, and the clamping effect is enhanced.

It is specific, universal joint 4 is retractable, and inner structure can provide the moment of torsion, universal joint 4's both ends respectively with the both ends fixed connection who corresponds pivot 54, retractable's universal joint 4 can be when adjusting jack catch 3 position according to the interval free flexible adjustment self length of adjacent jack catch 3, thereby avoid jack catch 3 to produce the restriction each other when the relocation, thereby influence the additional installation of work piece, also can make when adjusting the angle of one of them eccentric calorie of wheel 52 simultaneously, all the other eccentric calorie of wheel 52's angle also can change in step, keep the cadence unanimously.

The working principle is as follows: the user firstly uses the key to drive the lock column 311 to rotate, because the lock column 311 is connected with the claw body 32 through screw threads, thereby each claw 3 can move towards the direction far away from the center of the chuck, then the adjusting bolt 51 is rotated to cause the eccentric clamping wheel 52 to move towards the direction far away from or close to the slide block 53, thereby the eccentricity of the eccentric clamping wheel 52 is changed, the adjusting bolt 51 is shifted towards the direction close to the base 1 to drive the eccentric clamping wheel 52 to rotate around the rotating shaft 54 towards the direction far away from the base 1, meanwhile, because one end of the coil spring 57 is fixedly connected with the side wall of the annular groove 58 and the other end is fixedly connected with the rotating shaft 54, the rotating shaft 54 drives the coil spring 57 to deform when rotating, at the moment, the workpiece is additionally installed, according to the shape of the workpiece, the proper number of the claws 3 is selected, the required claws 3 are moved towards the direction close to the center of the chuck, the workpiece is preliminarily clamped, at the moment, the adjusting bolt 51 is loosened, under the action of gravity and the coil spring 57, the eccentric clamping wheel 52 is folded towards the direction close to the base 1 to clamp the workpiece for the second time, and finally, the locking column 311 is continuously rotated and the ejector pin at the tail part of the machine tool is moved to completely clamp the workpiece.

It should be understood that the above-described embodiments are merely preferred embodiments of the utility model and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the utility model as long as they do not depart from the spirit of the utility model. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. The utility model provides a grinding machine floating jaw chuck, includes base (1), its characterized in that: the base has been seted up on (1) mounting groove (2), mounting groove (2) are "protruding" type structure, be provided with jack catch (3) in mounting groove (2), jack catch (3) can independently be adjusted, adjacent two movable mounting has universal joint (4) between the side of jack catch (3).

2. A grinding machine floating jaw chuck as claimed in claim 1, wherein: a plurality of mounting grooves (2) are formed, and the number of the mounting grooves (2) is equal to that of the clamping jaws (3).

3. A grinding machine floating jaw chuck as claimed in claim 1, wherein: jaw (3) are including claw seat (31) and the claw body (32), claw seat (31) are including lock post (311) and column base (312), screw thread has been seted up on lock post (311) surface, lock (311) one end and seted up square lockhole (313), the one end that square lockhole was seted up in lock post (311) runs through column base (312) and rotates with column base (312) and be connected, the one end that square lockhole (313) were kept away from in lock post (311) rotates with the one end that mounting groove (2) are close to base (1) inner wall and is connected, column base (312) set up the one side of keeping away from base (1) inner wall in mounting groove (2), the one end that claw body (32) are close to lock post (311) is provided with the screw thread, claw body (32) inside is provided with aligning mechanism (5).

4. A grinding machine floating jaw chuck according to claim 3, wherein: aligning mechanism (5) include adjusting bolt (51) and eccentric calorie wheel (52), seted up spout (55) in eccentric calorie wheel (52), sliding connection has slider (53) in spout (55), the opening part of spout (55) is equipped with stopper (56), be provided with pivot (54) in slider (53), adjusting bolt (51) run through the claw body (32) and slider (53), the head of adjusting bolt (51) is located claw body (32) outside, the one end that the head was kept away from in adjusting bolt (51) is passed through bearing and spout (55) bottom swing joint.

5. A grinding machine floating jaw chuck according to claim 3, wherein: the screw thread on the claw body (32) is matched with the screw thread on the outer surface of the lock cylinder (311).

6. The grinding machine floating jaw chuck of claim 4, wherein: the adjusting bolt (51) is in threaded connection with the sliding block (53).

7. The grinding machine floating jaw chuck of claim 4, wherein: the rotating shaft (54) penetrates through the side wall of the claw body (32) and the sliding block (53) at the same time and is perpendicular to the adjusting bolt (51) and arranged in different planes, and the adjusting bolt (51) is parallel to the end face of the base (1).

8. A grinding machine floating jaw chuck as claimed in claim 7, wherein: an annular groove (58) is formed in the sliding block (53) by taking the rotating shaft (54) as the center, a coil spring (57) is arranged in the annular groove (58), one end of the coil spring (57) is fixedly connected with the side wall of the annular groove (58), and the other end of the coil spring is fixedly connected with the rotating shaft (54).

9. A grinding machine floating jaw chuck according to claim 3 and 4, characterized in that: the claw body (32) is hollow and the internal space can allow the aligning mechanism (5) to rotate.

10. A grinding machine floating jaw chuck according to claims 1 and 4, characterized in that: the universal coupling (4) is telescopic, the internal structure can provide torque, and the two ends of the universal coupling (4) are fixedly connected with the two ends of the corresponding rotating shaft (54) respectively.