CN215237919U - Clamping jaw mechanism of oblique-pulling chuck - Google Patents

Abstract

The utility model discloses a draw jack catch mechanism of chuck to one side, characteristics are including a plurality of end claws of fixed mounting on the chuck body, install a jack catch on every end claw, are connected through floating coupling mechanism between jack catch and the corresponding end claw, and floating coupling mechanism realizes the floating installation of jack catch on corresponding end claw. The clamping jaw has the advantages that the clamping jaws are connected with the corresponding bottom jaws through the floating type connecting mechanisms, the floating type installation of the clamping jaws on the corresponding bottom jaws is realized through the floating type connecting mechanisms, so that when clamping an irregular workpiece, the clamping jaws can swing at a certain angle, the clamping force on the workpiece is adjusted, the requirement on the workpiece machining progress is met, and the machining qualified rate of the workpiece is ensured.

Description

Clamping jaw mechanism of oblique-pulling chuck

Technical Field

The utility model relates to a draw the chuck to one side, especially relate to a jack catch mechanism who draws the chuck to one side.

Background

The inclined pull chuck is a hydraulic clamp which is used for clamping a workpiece by using an oil cylinder to provide power. The cable-stayed chuck in the current market generally adopts a standard type clamping jaw, and the clamping jaw is rigidly connected with a chuck guide pillar and does not have a floating effect. The cable-stayed chuck is in a linkage type in the motion process, the fixed type claw without floating effect cannot realize the change of the claw angle, when a workpiece for processing is irregular, certain claw clamping force may be insufficient, so that the processing precision of the workpiece is reduced, and even unqualified workpieces are processed.

Disclosure of Invention

The utility model aims to solve the technical problem that a simple structure, possess the effect of floating draw the jack catch mechanism of chuck to one side is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model provides a draw jack catch mechanism of chuck to one side, includes a plurality of end claws of fixed mounting on the chuck body, every end claw on install a jack catch, jack catch and corresponding end claw between be connected through floating coupling mechanism, floating coupling mechanism realize the jack catch corresponding end claw on floating installation.

Floating coupling mechanism include that the center has the longitudinal section of the mounting hole that link up from top to bottom to be the connecting sleeve of T type, the connecting sleeve include top-down coaxial coupling's last location portion and lower connecting portion, the external diameter of last location portion be greater than the external diameter of lower connecting portion, the up end undercut of jack catch be provided with last location portion shape matched with location sunken, the sunken bottom face of location be provided with coaxial and upper and lower through-going connecting hole, the up end undercut of bottom claw be provided with the coaxial connection of connecting hole sunken, the sunken bottom face of connection be provided with coaxial female thread mounting hole, last location portion set up in the location sunken, lower connecting portion pass the connecting hole set up in the connection sunken in, pass through with female thread mounting hole complex screw or bolt the mounting hole spiro union be in the female thread mounting hole spiro union be in The installation of the clamping jaw on the bottom jaw is realized in the installation hole, a first movable gap is arranged between the upper positioning part and the positioning recess, and a second movable gap is arranged between the lower connecting part and the connecting hole. The floating type connecting mechanism is simple in structure and convenient to disassemble and assemble, the clamping jaws are stably installed on the bottom jaws at corresponding positions through the matching of the connecting sleeves and the screws or bolts, a first movable gap is arranged between the upper positioning portion and the positioning recess, a second movable gap is arranged between the lower connecting portion and the connecting hole, the rotary floating installation of the clamping jaws on the bottom jaws is realized through the arrangement of the first movable gap and the second movable gap, the floating type connecting mechanism can be used for clamping thin-walled workpieces or blanks with irregular shapes, the deformation of the workpieces is effectively reduced, and the machining precision is improved.

The outer diameter of the upper positioning part is smaller than the inner diameter of the positioning recess, the first movable gap is the vertical distance from the lower end face of the upper positioning part to the bottom end face of the positioning recess, and the first movable gap is 0.05-0.1 mm. The above numerical range ensures that the clamping jaw still has stable clamping force on the basis of ensuring that the clamping jaw can be installed on the bottom jaw in a deflection way.

The second movable gap is the difference between the outer diameter of the lower connecting part and the inner diameter of the connecting hole, and the second movable gap is 0.24-0.35 mm. The above numerical range ensures that the clamping jaw still has stable clamping force on the basis of ensuring that the clamping jaw can be installed on the bottom jaw in a deflection way.

The outer side part of the upper end surface of the bottom claw is provided with a limiting blocking wall in an upward protruding mode, and a gap is formed between the inner end surface of the limiting blocking wall and the outer end surface of the clamping claw. The limit stop wall has a limit function on the deflection angle of the clamping jaw.

The clearance is 0.5 +/-0.05 mm. The gap value ensures that the clamping jaw still has stable clamping force on the basis of ensuring that the clamping jaw can be installed on the bottom jaw in a deflection mode.

The lower connecting part is tightly matched with the connecting recess. The connecting sleeve is ensured to be fixedly arranged during the working process, and the relative rotation between the connecting sleeve and the clamping jaws is prevented.

Compared with the prior art, the utility model has the advantages of: the clamping jaws are connected with the corresponding bottom jaws through the floating connecting mechanisms, floating installation of the clamping jaws on the corresponding bottom jaws is achieved through the floating connecting mechanisms, so that when clamping irregular workpieces, the clamping jaws can swing at a certain angle, clamping force on the workpieces is adjusted, the requirement of the workpiece machining progress is met, and the machining qualified rate of the workpieces is guaranteed.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention mounted on a chuck body;

FIG. 2 is a schematic view of the structure of the present invention in partial section mounted on a chuck body;

fig. 3 is an exploded schematic view of a pair of bottom jaws and jaws of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in the figure, the clamping jaw mechanism of the cable-stayed chuck comprises a plurality of bottom jaws 2 fixedly installed on a chuck body 1, each bottom jaw 2 is provided with a clamping jaw 3, the clamping jaws 3 and the corresponding bottom jaws 2 are connected through a floating type connecting mechanism, and the floating type connecting mechanism realizes the floating type installation of the clamping jaws 3 on the corresponding bottom jaws 2.

In this embodiment, the floating connection mechanism includes a connection sleeve 4 having a mounting hole 41 penetrating up and down at the center and having a T-shaped longitudinal section, the connection sleeve 4 includes an upper positioning portion 401 and a lower connection portion 402 coaxially connected from top to bottom, the outer diameter of the upper positioning portion 401 is larger than the outer diameter of the lower connection portion 402, the upper end surface of the claw 3 is recessed downward to form a positioning recess 31 matching with the upper positioning portion 401, the bottom end surface of the positioning recess 31 is provided with a connecting hole 32 coaxially penetrating up and down, the upper end surface of the bottom claw 2 is recessed downward to form a connecting recess 21 coaxial with the connecting hole 32, the bottom end surface of the connecting recess 21 is provided with a coaxial female screw mounting hole 22, the upper positioning portion 401 is disposed in the positioning recess 31, the lower connection portion 402 is disposed in the connecting recess 21 through the connecting hole 32, and the female screw or bolt 9 matching with the female screw mounting hole 22 is screwed into the female screw mounting hole 22 through the mounting hole 41 The inner implementation jaw 3 is mounted on the bottom jaw 2, a first movable gap (not shown) is arranged between the upper positioning portion 401 and the positioning recess 31, and a second movable gap (not shown) is arranged between the lower connecting portion 402 and the connecting hole 32.

In this embodiment, the outer diameter of the upper positioning portion 401 is smaller than the inner diameter of the positioning recess 31, the first movable gap is the vertical distance from the lower end surface of the upper positioning portion 401 to the bottom end surface of the positioning recess 31, and the first movable gap is 0.05-0.1 mm.

In this embodiment, the second movable gap 6 is the difference between the outer diameter of the lower connecting portion 402 and the inner diameter of the connecting hole 32, and the second movable gap is 0.24-0.35 mm.

In this embodiment, the outer side of the upper end surface of the bottom jaw 2 is provided with a limit stop wall 201 in an upward protruding manner, and a gap 7 is provided between the inner end surface of the limit stop wall 201 and the outer end surface of the jaw 3.

In this particular embodiment, the gap is 0.5 ± 0.05 mm.

In this embodiment, the lower connecting portion 402 and the connecting recess 21 are tightly fitted.

Claims (7)

1. The utility model provides a draw jack catch mechanism of chuck to one side, its characterized in that includes a plurality of end claws of fixed mounting on the chuck body, every end claw on install a jack catch, the jack catch with corresponding end claw between be connected through floating coupling mechanism, floating coupling mechanism realize the jack catch corresponding end claw on floating installation.

2. The jaw mechanism of a cable-stayed chuck according to claim 1, wherein the floating connection mechanism comprises a connection sleeve with a T-shaped longitudinal section and a through-hole at the center, the connection sleeve comprises an upper positioning portion and a lower connection portion which are coaxially connected from top to bottom, the outer diameter of the upper positioning portion is larger than that of the lower connection portion, a positioning recess matched with the upper positioning portion in shape is formed in a downward recess of the upper end surface of the jaw, a coaxial and through-hole is formed in the bottom end surface of the positioning recess, a connection recess coaxial with the connection hole is formed in a downward recess of the upper end surface of the bottom jaw, a coaxial internal thread mounting hole is formed in the bottom end surface of the connection recess, the upper positioning portion is arranged in the positioning recess, and the lower connection portion penetrates through the connection hole and is arranged in the connection recess, the bottom claw is installed on the bottom claw by penetrating a screw or a bolt matched with the internal thread installation hole through the installation hole in a screwed mode, a first movable gap is formed between the upper positioning portion and the positioning recess, and a second movable gap is formed between the lower connecting portion and the connecting hole.

3. The clamping jaw mechanism of a cable-stayed chuck as claimed in claim 2, wherein the outer diameter of the upper positioning part is smaller than the inner diameter of the positioning recess, the first movable gap is the vertical distance from the lower end surface of the upper positioning part to the bottom end surface of the positioning recess, and the first movable gap is 0.05-0.1 mm.

4. The jaw mechanism of a cable-stayed chuck as claimed in claim 2, wherein the second movable gap is a difference between an outer diameter of the lower connecting part and an inner diameter of the connecting hole, and the second movable gap is 0.24-0.35 mm.

5. The jaw mechanism of a cable-stayed chuck as claimed in claim 1, wherein the outer side of the upper end surface of the bottom jaw is provided with a limit stop wall in an upward protruding manner, and a gap is formed between the inner end surface of the limit stop wall and the outer end surface of the jaw.

6. The jaw mechanism of a cable-stayed chuck as claimed in claim 5, wherein the gap is 0.5 ± 0.05 mm.

7. The jaw mechanism of a cable-stayed chuck as claimed in claim 2, wherein the lower connecting part is tightly fitted with the connecting recess.

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