CN216575590U - Elastic clamping jaw for synchronous chuck - Google Patents

Abstract

The utility model discloses an elasticity jack catch for synchronous chuck, it includes jack catch main part (1), is equipped with the mounting hole that is used for being connected with synchronous chuck on jack catch main part (1), its characterized in that: it still includes elastic component (2) and conflict piece (3), the one end of elastic component (2) is equipped with first dovetail (4), jack catch main part (1) is equipped with the first dovetail with first dovetail (4) adaptation in the position that corresponds first dovetail (4) with the link of elastic component (2), elastic component (2) are connected in jack catch main part (1) and are supported between contact piece (3), because elastic component (2) itself possesses extensibility and compressibility, when making the elastic jack catch be applied to the synchronous chuck of four-jaw linkage, can offset the dimensional error that produces in the different work piece course of working through the deformation of elastic component (2), thereby avoid appearing the jack catch that empty clamp appears in the synchronous chuck and influence the stability of centre gripping.

Description

Elastic clamping jaw for synchronous chuck

Technical Field

The utility model relates to a clamping jaw technical field specifically is an elasticity jack catch for synchronous chuck.

Background

The chuck is a mechanical device used for clamping a workpiece on a machine tool, and the workpiece to be processed is clamped by radial movement of movable clamping jaws circumferentially distributed on a chuck body.

The existing synchronous chuck adopts four-jaw linkage to fix the core for clamping a workpiece when clamping the workpiece, and because a part of workpieces has slight size deviation in the production process, the core fixing clamping mode of the four-jaw linkage can lead a certain clamping jaw in the chuck to be incapable of abutting against the workpiece and cause the problem of empty clamping, thus leading to unstable clamping of the workpiece.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem that empty clamping occurs when the existing clamping jaw is used for clamping a four-jaw linkage fixed core, the utility model provides an elastic clamping jaw for a synchronous chuck, which comprises a clamping jaw main body, wherein the clamping main body is provided with a mounting hole for being connected with the synchronous chuck, the elastic clamping jaw further comprises an elastic part and a contact part, one end of the elastic part is provided with a first dovetail joint, the clamping jaw main body is provided with a first dovetail groove adapted to the first dovetail joint at the position corresponding to the first dovetail joint of the elastic part, and the first dovetail joint is matched with the first dovetail groove to connect the elastic part and the clamping jaw main body; the other end of elastic component is equipped with the second dovetail, and the conflict piece is equipped with the second dovetail adaptation in the position that corresponds the second dovetail with the link of elastic component, and the cooperation of second dovetail and second dovetail is in order to connect elastic component and conflict piece.

Furthermore, the number of the first dovetail joints is two, a first positioning boss is arranged between the two first dovetail joints, and a first positioning groove is formed in the position, corresponding to the first positioning boss, of the jaw main body; the number of the second dovetail joints is two, a second positioning boss is arranged between the two second dovetail joints, and a second positioning groove is formed in the position, corresponding to the second positioning boss, of the jaw main body.

Further, the front side faces of the end portions of the first dovetail block and the second dovetail block are flat faces, the root portions of the first dovetail block and the second dovetail block are narrower than the end portions of the first dovetail block and the second dovetail block, and the width of the first dovetail block and the second dovetail block gradually increases from the root portions of the first dovetail block and the second dovetail block in the direction of the end portions.

Furthermore, the cross section of the elastic piece is the same as the cross section of the contact piece in size and shape.

Furthermore, the lower end face of the jaw main body is a comb tooth face.

Further, the elastic member is a rubber structure or a silica gel structure.

Further, the elastic part comprises hard connecting pieces at two ends and a spring connected between the hard connecting pieces.

Adopt above-mentioned structure to make the utility model discloses possess following gain effect:

1. install the elastic component additional between jack catch main part and conflict portion, when being applied to synchronous chuck, can offset slight dimensional error between the different work pieces, the elastic component shrink when the work piece that the centre gripping size is bigger than normal, the elastic component does not shrink when the work piece that the centre gripping size is little than normal for the conflict piece of elasticity jack catch can conflict the work piece all the time and avoid appearing empty technical problem who presss from both sides.

2. The contact piece is detachably connected with the elastic piece, the contact piece can be replaced to adapt to different workpieces, and compared with the prior art, the complicated step of replacing the whole clamping jaw is omitted.

Drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a side sectional view of the present invention.

Fig. 3 is a schematic structural diagram of the present invention.

FIG. 4 is a schematic structural diagram according to an embodiment.

Shown in the figure: 1. a jaw body; 2. an elastic member; 3. a contact member; 4. a first dovetail; 5. a second dovetail; 6. a first positioning boss; 7. a second positioning boss; 8. a spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model discloses an elastic claw for a synchronous chuck, which comprises a claw main body 1, wherein the claw main body 1 is provided with a mounting hole for connecting with the synchronous chuck, the elastic claw further comprises an elastic part 2 and a conflict part 3, one end of the elastic part 2 is provided with a first dovetail 4, the claw main body 1 is provided with a first dovetail groove adaptive to the first dovetail 4 at the position corresponding to the first dovetail 4 at the connecting end of the elastic part 2, and the first dovetail 4 is matched with the first dovetail groove to connect the elastic part 2 and the claw main body 1; the other end of elastic component 2 is equipped with second dovetail 5, and conflict piece 3 is equipped with the second dovetail with 5 adaptations of second dovetail in the position that corresponds second dovetail 5 with the link of elastic component 2, and second dovetail 5 cooperates with the second dovetail to be connected elastic component 2 and conflict piece 3.

The material of the elastic member 2 is preferably rubber or silicone rubber. The elastic piece 2 has contractibility and ductility, when the same batch of workpieces are handled, a four-jaw synchronous chuck is used for clamping a four-square workpiece as an example, the four-jaw synchronous chuck is used for clamping the workpiece by four-jaw linkage for centering, the size of the workpiece has slight deviation, but the size of a clamping groove is fixed because the jaws are hard, and when the workpiece with smaller size is clamped, at least one jaw cannot abut against the workpiece, namely, a blank clamping phenomenon occurs, so that the clamping stability is poor; when replacing the jack catch into the elasticity jack catch, set for the initial centre gripping groove of chuck to be less than work piece size itself, when the work piece centre gripping wherein, elastic component 2 shrink to the elastic force of elastic component 2 is as the clamping-force of chuck, when the work piece size is slightly bigger than normal, the shrinkage of elastic component 2 increases, when the work piece size is slightly smaller than normal, the shrinkage of elastic component 2 reduces, compares prior art, uses the elasticity jack catch can effectively avoid appearing the empty technical problem who presss from both sides of single jack catch. The adjustable range of the elastic element 2 is in the range of 1% -10% of the radial size of the elastic element 2 itself, so that the automatic adjustment of the elastic jaws is limited to fine size deviation adjustment. The dovetail joint connection mode can improve the radial connection strength of the elastic clamping jaws, and the elastic clamping jaws are adjusted by the contraction and extension of the elastic parts 2.

Preferably, the elastic member 2 is connected in a non-detachable manner, i.e. rubber or silicone is integrally connected between the jaw body 1 and the abutting member 3 in an injection molding manner, but since the connection between the rubber and the metal is not permanent, the connection still needs to be performed through a dovetail groove.

As one of the preferable schemes, in order to facilitate the connection and positioning between the elastic member 2 and the jaw main body 1 and the abutting member 3, the elastic member 2, the jaw main body 1 and the abutting member 3 are correspondingly designed with parts for positioning, specifically, the number of the first dovetail joints 4 is two, a first positioning boss 6 is arranged between the two first dovetail joints 4, and a first positioning groove is arranged at the position of the jaw main body 1 corresponding to the first positioning boss 6; the quantity of second forked tail 5 is two, is equipped with second location boss 7 between two second forked tail 5, and the position that the jack catch main part 1 corresponds second location boss 7 is equipped with the second constant head tank. The first positioning boss 6 and the second positioning boss 7 are used for positioning the jaw body 1, the elastic part 2 and the abutting part 3 during installation, and do not bear force. The tip leading flank of first forked tail 4 and second forked tail 5 is the planishing face, and the root is narrower than the tip to from the root of first forked tail 4 and second forked tail 5 along the direction of tip widen gradually, the elastic component 2 with the jack catch main part 1 with conflict piece 3 be connected through the joggle joint between first forked tail 4, second forked tail 5 and first dovetail, the second dovetail, its bearing point is on whole contact surface. The cross-section of elastic component 2 is the same with the big or small shape in cross-section of conflict piece 3, because elastic component 2 has process error in the course of working, for avoiding first location boss 6 and second location boss 7 unable adaptation first constant head tank and the degree of depth of second constant head tank and influence the installation when the installation, sets for the degree of depth that highly is less than first constant head tank of first location boss 6, and the degree of depth that highly is less than the second constant head tank of second location boss 7.

Installation process:

aligning the first dovetail joint 4 with the first dovetail groove, vertically clamping downwards, extruding and deforming the first positioning boss 6, and when the first positioning boss 6 moves to the position of the first positioning groove, enabling the first positioning boss 6 to restore to the original state and enter the first positioning groove, namely completing the connection of the elastic element 2 and the clamping main body 1; with second dovetail 5 alignment second dovetail, vertical downward block, second location boss 5 receives extrusion deformation, when second location boss 6 removed the position at second constant head tank place, and 6 reconversion entering second constant head tank of second location boss, accomplish the connection of elastic component 2 and conflict piece 3 promptly. The lower end face of the jaw main body 1 is a comb tooth face, and the comb tooth face is used for being matched with comb teeth on the upper end face of a sliding block of the chuck, so that the size of a clamping groove of the chuck can be adjusted.

As one preferable scheme, the elastic member 2 or comprises hard connecting members at two ends and a spring 8 connected between the hard connecting members, as shown in fig. 4, the first dovetail 4 and the second dovetail 5 are respectively arranged on the hard connecting members at two ends, and the hard connecting members at two ends are respectively connected with the jaw main body 1 and the abutting member 3 in a joggle manner. Thereby the size of clamping area is adjusted in the deformation of different degree can take place for spring 8 when conflict piece 3 receives the extrusion of the work piece of equidimension, and the elasticity of spring is the clamping-force of chuck promptly, because conflict piece 3 and elastic component 2 are for dismantling the connection, consequently also can carry out convenient and fast ground to conflict piece 3 and change, can adopt the conflict piece of different grade type and need not to change whole jack catch promptly to the work piece of difference.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and all the changes made within the scope of the independent claims of the present invention are within the scope of the present invention.

Claims (7)

1. The utility model provides an elasticity jack catch for synchronous chuck, it includes jack catch main part (1), is equipped with the mounting hole that is used for being connected with synchronous chuck on jack catch main part (1), its characterized in that:

it also comprises an elastic part (2) and an abutting part (3),

one end of the elastic part (2) is provided with a first dovetail joint (4), the jaw main body (1) is provided with a first dovetail groove matched with the first dovetail joint (4) at a position corresponding to the first dovetail joint (4) at the connecting end of the elastic part (2), and the first dovetail joint (4) is matched with the first dovetail groove to connect the elastic part (2) and the jaw main body (1);

the other end of elastic component (2) is equipped with second forked tail (5), and the position that connection end with elastic component (2) corresponds second forked tail (5) is equipped with the second dovetail with second forked tail (5) adaptation in contact piece (3), second forked tail (5) and second dovetail cooperation in order to connect elastic component (2) and contact piece (3).

2. The resilient jaws for a synchronized chuck as set forth in claim 1, wherein: the number of the first dovetail joints (4) is two, a first positioning boss (6) is arranged between the two first dovetail joints (4), and a first positioning groove is formed in the position, corresponding to the first positioning boss (6), of the jaw main body (1); the quantity of second forked tail (5) is two, is equipped with second location boss (7) between two second forked tail (5), and the position that claw main part (1) corresponds second location boss (7) is equipped with the second constant head tank.

3. The resilient jaws for a synchronized chuck as set forth in claim 1, wherein: the front side surfaces of the end parts of the first dovetail joint (4) and the second dovetail joint (5) are flat surfaces, the root parts of the first dovetail joint and the second dovetail joint are narrower than the end parts, and the width of the first dovetail joint and the second dovetail joint is gradually increased from the root parts of the first dovetail joint (4) and the second dovetail joint (5) along the direction of the end parts.

4. The resilient jaws for a synchronized chuck as set forth in claim 1, wherein: the section of the elastic piece (2) is the same as the section of the contact piece (3) in size and shape.

5. The resilient jaws for a synchronized chuck as set forth in claim 1, wherein: the lower end face of the jaw main body (1) is a comb tooth face.

6. The resilient jaws for a synchronized chuck as set forth in claim 1, wherein: the elastic piece (2) is a rubber structural body or a silica gel structural body.

7. The resilient jaws for a synchronized chuck as set forth in claim 1, wherein: the elastic piece (2) or comprises hard connecting pieces at two ends and a spring connected between the hard connecting pieces.

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