CN217315935U

CN217315935U - Product clamping device

Info

Publication number: CN217315935U
Application number: CN202221048779.0U
Authority: CN
Inventors: 雷生兵; 刘仁
Original assignee: Wuhan Dongfang Junchi Precision Manufacturing Co ltd
Current assignee: Wuhan Dongfang Junchi Precision Manufacturing Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-08-30
Anticipated expiration: 2032-05-05

Abstract

The utility model relates to the technical field of machining, in particular to a product clamping device, which comprises a chuck main body; the head end of the chuck main body is provided with an alloy tip for positioning a central hole of a product; the chuck body is provided with a plurality of deflection grooves which are uniformly distributed around the alloy tip along the circumferential direction, and a transmission cavity communicated with the deflection grooves is formed in the chuck body along the axial direction; the deflection groove is internally hinged with a finger fixing piece, the outer end of the finger fixing piece is provided with a material clamping finger, and the finger fixing piece can deflect along the radial direction of the chuck main body so as to drive the material clamping finger to clamp a product. The center hole of a processed product is preliminarily positioned through the arranged alloy tip, and then the deflection assembly drives the finger fixing pieces to deflect synchronously, so that the plurality of clamping fingers clamp along the circumferential direction of the product, and the product is quickly fixed. The position can be adjusted for many times without manual work, and one set of material clamping fingers can be used for products with multiple sizes.

Description

Product clamping device

Technical Field

The utility model relates to a machining technical field specifically is a product clamping device.

Background

In the process of machining a product at present, a three-jaw chuck of a machine tool and a specific clamp are generally utilized to fix the product; for products with different axes or irregularities, special fixtures are required, one for each product.

When the clamp is used for clamping a product, the position of the product is required to be adjusted continuously by manpower, and time and labor are wasted when the clamp is replaced; because the product is various, the anchor clamps type of configuration is more, has increased the processing cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, provide a product clamping device and solve the problem that above-mentioned product centre gripping is difficult to effective location.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a product clamping device comprising a collet body; the head end of the chuck main body is provided with an alloy tip for positioning a central hole of a product; the chuck body is provided with a plurality of deflection grooves which are uniformly distributed around the alloy tip along the circumferential direction, and a transmission cavity communicated with the deflection grooves is formed in the chuck body along the axial direction; a finger fixing piece is hinged in the deflection groove, a material clamping finger is mounted at the outer end of the finger fixing piece, and the finger fixing piece can deflect along the radial direction of the chuck main body to drive the material clamping finger to clamp a product; and a deflection assembly connected with the finger fixing pieces is arranged in the transmission cavity and used for driving the finger fixing pieces to deflect synchronously.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the deflection assembly comprises a transmission pull rod arranged along the axial direction of the transmission cavity and a type lever hinged in the deflection groove and linked with the finger fixing piece lever; the inner end of the transmission pull rod is provided with a lever thruster connected with a plurality of type levers, and the transmission pull rod can move along the axial direction to drive the type levers to be linked through the lever thruster.

Further, the lever thruster comprises a limiting cylinder, a guide cavity is arranged in the limiting cylinder, and thrust joint bearings are arranged at two ends of the guide cavity along the axial direction; the outer wall of the limiting cylinder is axially provided with a plurality of clamping grooves which sequentially correspond to the deflection grooves; the front end of the lever transmission extends into the guide cavity from the clamping groove, and is provided with a spherical roller matched with the thrust knuckle bearing.

Furthermore, a positioning part matched with the spherical roller is formed at the front end of the lever transmission; the positioning part is characterized in that a locking groove is formed in the outer ring of the positioning part, and an elastic check ring used for locking the spherical roller is arranged in the locking groove.

Furthermore, the material clamping fingers are detachably connected with the finger fixing piece through the type nuts.

Furthermore, a concave groove which is spaced from the material clamping finger is radially formed in the finger fixing piece; and a convex shifting block in sliding fit is arranged in the concave groove and used for assembling the nut.

Furthermore, the finger fixing piece and the material clamping finger binding face are both provided with protective sawteeth.

Furthermore, an arc-shaped bulge is formed at one end of the L-shaped lever close to and surrounding the alloy tip; and an arc-shaped groove matched with the arc-shaped bulge is formed in the finger fixing piece.

The utility model has the advantages that: the utility model relates to a product clamping device tentatively fixes a position through the top centre bore to the processing product of alloy that sets up, drives a plurality of finger mountings through the subassembly that deflects afterwards and deflect in step to make a plurality of double-layered material fingers press from both sides tightly along product circumference, in order to realize the quick fixed to the product. The position can be adjusted for many times without manual work, and one set of material clamping fingers can be used for products with multiple sizes.

Drawings

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

fig. 2 is a side view of the present invention;

fig. 3 is a cross-sectional view taken along line a-a of fig. 2 in accordance with the present invention;

fig. 4 is a schematic structural view of another view angle of the present invention;

FIG. 5 is a schematic view of the overall structure of the chuck body of the present invention;

FIG. 6 is a schematic view of the connection of the finger fixing member, the material clamping finger and the lever thruster of the present invention;

fig. 7 is a schematic structural view of the limiting cylinder of the present invention;

fig. 8 is a schematic view of the finger fixing member, the gripping finger and the lever thruster at another view angle;

fig. 9 is an exploded view of the finger fixing member, the L-shaped lever and the clamping finger according to the present invention.

In the drawings, the reference numbers indicate the following list of parts:

1. the chuck comprises a chuck body, a 1a deflection groove, a 1b transmission cavity, a 2 alloy tip, a 3 finger fixing piece, a 3a concave groove, a 4 material clamping finger, a 41T-shaped nut, a 5 transmission pull rod, a 6L-shaped lever, a 61 positioning part, a 601, a spherical roller, a 61a locking groove, a 7 lever thruster, a 71 limiting cylinder, a 71a clamping groove, a 72 thrust joint bearing, an 8 elastic check ring, a 9 convex shifting block.

Detailed Description

The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration only and are not intended to limit the scope of the invention.

It should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are intended to be construed broadly, as if they were connected either fixedly or removably, or as integrally formed structures. To those of ordinary skill in the art, the specific meaning of such terms in this patent may be understood as appropriate.

The embodiment of the utility model is as follows

As shown in fig. 1, 2, 3, 4 and 5, the product clamping device of the present invention comprises a chuck body 1; the head end of the chuck main body 1 is provided with an alloy tip 2 for positioning a center hole of a product, and the center hole of the product is initially positioned by arranging the alloy tip 2. The chuck body 1 is provided with a plurality of deflection grooves 1a which are uniformly distributed around the alloy tip 2 along the circumferential direction, and the chuck body 1 is internally provided with a transmission cavity 1b communicated with the deflection grooves 1a along the axial direction; a finger fixing piece 3 is hinged in the deflection groove 1a, a material clamping finger 4 is arranged at the outer end of the finger fixing piece 3, and the finger fixing piece 3 can deflect along the radial direction of the chuck main body 1 to drive the material clamping finger 4 to clamp a product; the transmission cavity 1b is internally provided with a deflection assembly connected with the plurality of finger fixing pieces 3 and used for driving the plurality of finger fixing pieces 3 to deflect synchronously. In this embodiment, the deflection groove 1a is provided with three groups, and stable clamping of the product can be realized through three groups of material clamping fingers 4.

The utility model provides a product clamping device can direct arrangement in lathe or lathe, tentatively fixes a position through the centre bore of the top 2 pair processing products of alloy that set up, drives a plurality of finger mountings 3 synchronous deflection through the subassembly that deflects afterwards to make a plurality of double-layered material fingers 4 press from both sides tightly along product circumference, with the realization to the quick fixed of product. The position is not required to be adjusted manually for many times, and one set of material clamping fingers 4 can be used for products with multiple sizes.

As an example, as shown in fig. 3 and 6, the deflecting assembly includes a driving pull rod 5 axially disposed along the driving chamber 1b, and an L-shaped lever 6 hinged in the deflecting groove 1a and lever-linked with the finger fixing member 3; the inner end of the transmission pull rod 5 is provided with a lever thruster 7 connected with a plurality of L-shaped levers 6, and the transmission pull rod 5 can move along the axial direction to drive the L-shaped levers 6 to be linked through the lever thruster 7. The outer end of the transmission pull rod 5 is connected with a machine tool internal cylinder or a hydraulic cylinder so as to control the transmission pull rod 5 to move axially along the transmission cavity 1 b.

As shown in fig. 9, an arc-shaped protrusion 62 is formed at one end of the L-shaped lever 6, which is close to and surrounds the alloy tip 2; offer the arc wall 3b that matches with arc arch 62 on the finger mounting 3, extrude arc wall 3b through arc arch 62 in order to drive the accurate deflection of finger mounting 3.

Note that, the finger fixing member 3 and the L-shaped lever 6 are both hinged in the deflection groove 1a by a positioning pin.

In the embodiment, when the transmission pull rod 5 moves close to the alloy tip 2, the finger fixing piece 3 drives the material clamping finger 4 to clamp a product under the linkage of the L-shaped lever 6; when the transmission pull rod 5 moves away from the alloy tip 2, the finger fixing piece 3 drives the material clamping finger 4 to loosen the product under the linkage of the L-shaped lever 6.

As an embodiment, as shown in fig. 6, 7 and 8, the lever thruster 7 includes a limiting cylinder 71, a guide cavity is provided in the limiting cylinder 71, and both ends of the guide cavity in the axial direction are provided with thrust knuckle bearings 72; the outer wall of the limiting cylinder 71 is axially provided with a plurality of clamping grooves 71a which sequentially correspond to the deflection grooves 1 a; the transmission front end of the L-shaped lever 6 extends into the guide cavity from the clamping groove 71a, and a spherical roller 601 matched with the thrust joint bearing 72 is installed. When the limiting cylinder 71 moves along with the transmission pull rod 5, the spherical roller 601 is in rolling fit with the thrust knuckle bearing 72, so that transmission resistance is reduced, and normal deflection of the L-shaped lever 6 is guaranteed.

Specifically, a positioning part 61 matched with the spherical roller 601 is formed at the transmission front end of the L-shaped lever 6; the outer ring of the positioning part 61 is provided with a locking groove 61a, and an elastic retainer ring 8 for locking the spherical roller 601 is arranged in the locking groove 61 a. The spherical roller 601 and the positioning portion 61 are detachably designed, and the elastic check ring 8 is locked and fixed through the elastic check ring 8. The elastic check ring 8 is removed, so that the spherical roller 601 can be maintained and replaced regularly, and the influence on transmission due to mechanical abrasion is avoided.

As an example, as shown in fig. 3 and 9, the material clamping finger 4 is detachably connected to the finger holder 3 by a T-shaped nut 41.

In addition, a concave groove 3a which is spaced from the material clamping finger 4 is radially arranged in the finger fixing piece 3; the concave groove 3a is internally provided with a convex shifting block 9 in sliding fit for assembling the T-shaped nut 41. The relative position of the convex shifting block 9 and the concave groove 3a is adjusted to change the distance between the material clamping fingers 4 and the product, so that the clamping of the products with different shapes is met. By adopting the improved design, the center hole of the product can be positioned, and the product can be clamped no matter the appearance of the product is different from the center hole or different from the center hole, so that other parts can be machined by a machine tool.

Further, finger mounting 3 all is equipped with the protection sawtooth with pressing from both sides 4 binding surfaces of material finger, guarantees that finger mounting 3 and 4 relative positions of pressing from both sides material finger can not appear deviating.

The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A product clamping device, characterized by comprising a chuck body (1); the head end of the chuck main body (1) is provided with an alloy tip (2) for positioning a central hole of a product; the chuck body (1) is provided with a plurality of deflection grooves (1a) which are uniformly distributed around the alloy tip (2) along the circumferential direction, and the chuck body (1) is internally provided with a transmission cavity (1b) which is communicated with the deflection grooves (1a) along the axial direction; a finger fixing piece (3) is hinged in the deflection groove (1a), a material clamping finger (4) is installed at the outer end of the finger fixing piece (3), and the finger fixing piece (3) can deflect along the radial direction of the chuck main body (1) to drive the material clamping finger (4) to clamp a product; and a deflection assembly connected with the plurality of finger fixing pieces (3) is arranged in the transmission cavity (1b) and is used for driving the plurality of finger fixing pieces (3) to deflect synchronously.

2. The product clamping device as claimed in claim 1, characterized in that the deflection assembly comprises a transmission pull rod (5) arranged axially along the transmission cavity (1b), and an L-shaped lever (6) hinged in the deflection groove (1a) and in lever linkage with the finger holder (3); the inner end of the transmission pull rod (5) is provided with a lever thruster (7) connected with a plurality of L-shaped levers (6), and the transmission pull rod (5) can move along the axial direction to drive the L-shaped levers (6) to be linked through the lever thruster (7).

3. The product clamping device as claimed in claim 2, wherein the lever thruster (7) comprises a limiting cylinder (71), a guide cavity is arranged in the limiting cylinder (71), and thrust joint bearings (72) are arranged at both ends of the guide cavity in the axial direction; the outer wall of the limiting cylinder (71) is axially provided with a plurality of clamping grooves (71a) which sequentially correspond to the deflection grooves (1 a); the transmission front end of the L-shaped lever (6) extends into the guide cavity from the clamping groove (71a), and a spherical roller (601) matched with the thrust joint bearing (72) is installed.

4. The product clamping device as claimed in claim 3, characterized in that the drive front end of the L-shaped lever (6) is formed with a positioning part (61) matching with the spherical roller (601); a locking groove (61a) is formed in the outer ring of the positioning portion (61), and an elastic retainer ring (8) used for locking the spherical roller (601) is arranged in the locking groove (61 a).

5. Product clamping device according to claim 1, characterized in that the gripping fingers (4) are detachably connected to the finger holder (3) by means of T-nuts (41).

6. The product clamping device as claimed in claim 5, characterized in that the finger holder (3) is provided with a radially inner recess (3a) spaced from the gripping fingers (4); and a convex shifting block (9) in sliding fit is arranged in the concave groove (3a) and is used for assembling the T-shaped nut (41).

7. The product clamping device as claimed in claim 6, characterized in that the abutting surfaces of the finger fixing piece (3) and the clamping finger (4) are provided with protective saw teeth.

8. The product clamping device as claimed in claim 2, characterized in that the end of the L-shaped lever (6) close to the surrounding alloy tip (2) is formed with an arc-shaped protrusion (62); the finger fixing piece (3) is provided with an arc-shaped groove (3b) matched with the arc-shaped bulge (62).