CN215747917U

CN215747917U - Clamp for rapid key groove milling of numerical control machining center

Info

Publication number: CN215747917U
Application number: CN202122317627.8U
Authority: CN
Inventors: 吴学意; 曹晓畅
Original assignee: Dongguan Longwen Precision Technology Co ltd; Dongguan University of Technology
Current assignee: Dongguan Longwen Precision Technology Co ltd; Dongguan University of Technology
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-02-08
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a clamp for rapidly milling a key groove in a numerical control machining center, which is provided with a connecting plate, wherein a clamp body is designed on the connecting plate, two groups of convex strips are symmetrically arranged on the clamp body, an embedding groove is formed between the two groups of convex strips, a plurality of threaded holes are formed in the embedding groove, a plurality of positioning groove groups are formed in the convex strips, two V-shaped grooves are symmetrically arranged in the positioning groove groups, the threaded holes are arranged at the middle point position between the two V-shaped grooves, a bolt is in threaded connection with the threaded holes, a pressing block is arranged on the bolt, shaft workpieces below two ends of the pressing block are tightly pressed on the clamp body through the downward locking force of the middle bolt, the upper end and the lower end of the shaft workpieces are stressed in the V-shaped grooves at the moment, the middle of the shaft workpieces is stressed in the embedding groove, a plurality of surfaces of the shaft workpieces can be stressed in a balanced manner, the shaft workpieces are not easy to shake during machining, and the problem that the key groove at the end position of a shaft is stressed sufficiently during milling can be solved, the processing is easy to shake the cutter.

Description

Clamp for rapid key groove milling of numerical control machining center

Technical Field

The utility model relates to the technical field of clamps, in particular to a clamp for rapid key groove milling of a numerical control machining center.

Background

A groove, called a keyway, is machined into the shaft or bore to mate with the key for receiving the key to transmit torque. The jig is a device for fixing a processing object to occupy a correct position for receiving construction or inspection in a machine manufacturing process. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in a process may be referred to as a jig. Shaft parts are one of the most basic and important components in machines, and the main functions of the shaft parts are to transmit movement and torque and support rotating parts. The key connection has simple structure, reliable work and convenient disassembly and assembly, and is widely applied to the fixing and transmission of shaft parts.

The key groove milling is a process of milling a key groove on the surface of a workpiece by using a milling cutter, the workpiece needs to be clamped and milled by using the milling cutter, the key groove of the existing shaft is processed by using a vice special for the key groove milling, and a product is clamped by two V grooves of the vice, but the key groove milling technology has the following defects: the volume of the vice is large, a large amount of strokes of an effective worktable of the machine table are occupied, and at most, only two vices can be placed; the vice can only clamp one step excircle of the shaft processing piece, namely a single stress surface, the stress is sufficient when milling the key slot at the end part of the shaft, and the processing is easy to shake the cutter; and the processing parameters are relatively slow, the vice can only process one product once, the vice has insufficient precision, the keyway processing precision can not be ensured, and the reject ratio is relatively high.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects in the prior art, the utility model provides a clamp for rapidly milling a key slot in a numerical control machining center, which is provided with a connecting plate, wherein a clamp body is designed on the connecting plate, two groups of raised lines are symmetrically arranged on the clamp body, an embedding groove is formed between the two groups of raised lines, a plurality of threaded holes are formed in the embedding groove, a plurality of positioning groove groups are arranged on the raised lines, two V-shaped grooves are symmetrically arranged in the positioning groove groups, the threaded holes are arranged at the middle points between the two V-shaped grooves, a bolt is in threaded connection with the threaded holes, and a pressing block is arranged on the bolt.

Furthermore, the clamping groove is provided with a bulge, the bulge is provided with a plurality of arc-shaped grooves, and the arc-shaped grooves correspond to the V-shaped grooves in position.

Furthermore, the lower end in the middle of the V-shaped groove is provided with a square groove.

Furthermore, a through hole is formed in the middle of the pressing block, and the bolt penetrates through the through hole and is in threaded connection with the threaded hole.

The utility model has the beneficial effects that:

1. according to the utility model, the V-shaped groove matched with the step of the shaft machining piece is designed, so that the positions of the two ends of the shaft machining piece which are stressed most are supported and positioned, and the shaft machining piece can be ensured to keep horizontal precision on the clamp.

2. According to the utility model, the press block based on the lever principle is used, and the force of downward locking of the bolt in the middle is utilized, so that the shaft machining parts below two ends of the press block are tightly pressed on the clamp body, the upper end and the lower end of the shaft machining part are stressed in the V-shaped grooves in a balanced manner, the middle of the shaft machining part is stressed in the caulking groove, a plurality of surfaces of the shaft machining part can be stressed in a balanced manner, the shaft machining part is not easy to shake during machining, and the problems that the stress is sufficient during milling of the key groove at the end part of the shaft and the tool is easy to shake during machining can be solved.

3. According to the utility model, compared with a vice, the clamp can be used for simultaneously placing a plurality of shaft machining parts for clamping, so that a plurality of products can be machined at one time, and the stroke of the numerical control machining workbench is reduced.

Drawings

Fig. 1 is a schematic overall structure diagram of a fixture for rapid keyway milling in a numerical control machining center according to the embodiment;

fig. 2 is a schematic partial structural view of a fixture for rapid keyway milling in a numerical control machining center according to an embodiment;

fig. 3 is a second schematic partial structural view of the fixture for rapid keyway milling in the numerical control machining center according to the present embodiment;

fig. 4 is a third schematic partial structural view of the fixture for rapid keyway milling in the numerical control machining center according to the present embodiment;

fig. 5 is a fourth schematic view of a partial structure of the fixture for rapid keyway milling in the numerical control machining center according to the present embodiment;

fig. 6 is a front view partial structure schematic diagram of the fixture for rapid keyway milling in the numerical control machining center according to the embodiment.

Detailed Description

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

Examples

As shown in fig. 1 to 5, the clamp for rapid key groove milling in a numerical control machining center is provided with a connecting plate 1, a clamp body 11 is designed on the connecting plate 1, two groups of protruding strips 21 are symmetrically arranged on the clamp body 11, a clamping groove 20 is formed between the two groups of protruding strips 21, a plurality of threaded holes 23 are formed in the clamping groove 20, four groups of positioning groove groups are arranged on the protruding strips 21, two V-shaped grooves 211 are symmetrically arranged in the positioning groove groups, the threaded holes 23 are arranged at the middle point position between the two V-shaped grooves 211, a bolt 24 is in threaded connection with the threaded hole 23, and a pressing block 25 is arranged on the bolt 24.

The lower part of the clamping groove 20 is provided with a bulge 22, the bulge 22 is provided with eight arc-shaped grooves 221, the positions of the arc-shaped grooves 221 correspond to those of the V-shaped grooves 211, and the arc-shaped grooves 221 can support steps on a stepped shaft.

The lower end of the middle of the V-shaped groove 211 is provided with a square groove 212 which provides an embedding space for the shaft processing piece, the middle of the pressing block 25 is provided with a through hole 251, and the bolt 24 penetrates through the through hole 251 to be in threaded connection with the threaded hole 23.

The use process comprises the following steps:

briquetting 25 initial condition is vertical direction, and the staff places eight axle machined parts that will process on anchor clamps body 11, and axle machined part embedding is in clamping groove 20, and both ends are taken and are put on V-arrangement groove 211 around the axle machined part, and with the rotatory to the horizontal direction of briquetting 25, thereby rotation bolt 24 makes briquetting 25 downstream compress tightly the axle machined part on anchor clamps body 11, fixes anchor clamps on numerical control machining center workstation through connecting plate 1 at last.

The above is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims

1. The utility model provides an anchor clamps of quick keyseat processing of numerical control machining center, is equipped with connecting plate (1), its characterized in that: design anchor clamps body (11) on connecting plate (1), the symmetry is provided with two sets of sand grip (21) on anchor clamps body (11), is formed with between two sets of sand grip (21) and inlays position groove (20), sets up a plurality of screw hole (23) on the groove of inlaying (20), be equipped with a plurality of positioning groove group on sand grip (21), positioning groove group symmetry is provided with two V-arrangement groove (211), screw hole (23) set up on the mid point position between two V-arrangement groove (211), threaded connection has bolt (24) on screw hole (23), is equipped with briquetting (25) on bolt (24).

2. The clamp for rapid keyway milling of the numerical control machining center according to claim 1, wherein: the clamping groove (20) is provided with a protrusion (22), the protrusion (22) is provided with a plurality of arc-shaped grooves (221), and the arc-shaped grooves (221) correspond to the V-shaped grooves (211).

3. The clamp for rapid keyway milling of the numerical control machining center according to one of claims 1 to 2, wherein: the lower end in the middle of the V-shaped groove (211) is provided with a square groove (212).

4. The clamp for rapid keyway milling of the numerical control machining center according to claim 1, wherein: the middle of the pressing block (25) is provided with a through hole (251), and the bolt (24) penetrates through the through hole (251) to be in threaded connection with the threaded hole (23).