CN215616648U - Extensible milling machine fixture - Google Patents

Abstract

The utility model discloses an expandable milling machine fixture which comprises a chassis, a first guide rail and a second guide rail, wherein the chassis is provided with mounting bolt holes; the first guide rail and the second guide rail are oppositely arranged; a plurality of spare bolt holes are also formed in the chassis; the first guide rail is provided with a first clamp assembly in a sliding mode, the second guide rail is provided with a second clamp assembly in a sliding mode, and the first clamp assembly and the second clamp assembly are arranged oppositely. According to the milling machine fixture provided by the embodiment of the utility model, the fixture component is fixed through the bolts, and the plurality of groups of spare bolt holes are arranged, when the workpiece is too large and the initial V-shaped block cannot be used, the bolts on the guide rail of the V-shaped block are loosened, the guide rail of the V-shaped block is taken down and installed in the bolt holes capable of processing larger workpieces again, and the guide rail of the V-shaped block is fixed through the bolts again, so that larger workpieces can be processed.

Description

Extensible milling machine fixture

Technical Field

The utility model belongs to the technical field of milling machine machining, and particularly relates to an extensible milling machine fixture.

Background

The numerical control milling machine has the advantages of high precision, high production speed and the like, and is widely applied to the processing and manufacturing of products in various industries. In the machining process of the numerical control milling machine, the tool fixture can keep the positions of all devices of the numerical control milling machine, so that tools and workpieces of the numerical control milling machine can be effectively matched, and high-efficiency production and machining are realized.

In the actual production and processing process, an operator selects a workpiece, a cutter and the like, debugs processing and detects produced parts, a large amount of time is spent, and the production efficiency is influenced, so that the application of improving the processing technology of the numerical control milling machine is considered to be imperative, the precision of a product can be effectively improved by reasonably using the tool clamp of the numerical control milling machine, and the labor intensity of the operator is reduced.

In a numerically controlled milling machine, the clamping process plays an important role, and can ensure that workpieces can be orderly processed in the processing process after being positioned and clamped. Especially in mass production, the application of the clamp can effectively reduce the waste of various resources and improve the working efficiency. Although the clamp does not have the function of cutting, the product can be fixed at a certain position in the actual production process, so that the machining error of the product is reduced, and the improvement of the design of the tool clamp of the numerical control milling machine is particularly important.

The development of milling machine fixtures is rapid, but the milling machine fixtures have defects and shortcomings. Firstly, if the milling machine fixture uses excessive clamping force, the surface of a workpiece can be damaged, and the precision of the workpiece cannot be ensured; secondly, the machining process of the numerical control milling machine is a process with large mechanical vibration amplitude, in order to ensure the actual application effect of the tool fixture, the rigidity and the strength of the tool fixture need to be ensured, and the damage of the fixture can be caused because some fixtures cannot ensure the strength and the rigidity of the fixtures; thirdly, the positioning of the workpiece by the fixture is not accurate enough and needs to be adjusted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an extensible milling machine fixture, which is used for solving the problems of processing workpieces with various sizes and ensuring the clamping degree.

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

an extensible milling machine fixture comprises a chassis, a first guide rail and a second guide rail, wherein the chassis is provided with mounting bolt holes, and the first guide rail and the second guide rail are respectively fixed on the mounting bolt holes of the chassis through bolts; the first guide rail and the second guide rail are oppositely arranged;

a plurality of spare bolt holes are also formed in the chassis;

the first guide rail is provided with a first clamp assembly in a sliding mode, the second guide rail is provided with a second clamp assembly in a sliding mode, and the first clamp assembly and the second clamp assembly are arranged oppositely.

Further, the chassis is a circular chassis.

Furthermore, the clamp assembly comprises a hydraulic telescopic cylinder and a clamping block, and two sides of the clamping block are slidably mounted in the guide rail.

Furthermore, one end of the clamping block is used for clamping a workpiece, and the other end of the clamping block is fixedly connected with a telescopic rod of the hydraulic telescopic cylinder.

Further, the clamping blocks are V-shaped blocks.

Furthermore, the head opening of the V-shaped block is used for clamping a workpiece, and the tail of the V-shaped block is fixedly connected with a telescopic rod of the hydraulic telescopic cylinder.

Furthermore, two sides of the V-shaped block extend towards the tail part to form a strip plate, and the strip plate is installed in the sliding rail.

Furthermore, a distance measuring sensor is installed on the hydraulic telescopic cylinder.

Compared with the prior art, the utility model has the following technical effects:

(A) according to the milling machine fixture provided by the embodiment of the utility model, the fixture component is fixed through the bolts, and the plurality of groups of spare bolt holes are arranged, when the workpiece is too large and the initial V-shaped block cannot be used, the bolts on the guide rail of the V-shaped block are loosened, the guide rail of the V-shaped block is taken down and installed in the bolt holes capable of processing larger workpieces again, and the guide rail of the V-shaped block is fixed through the bolts again, so that larger workpieces can be processed.

(B) The milling machine fixture provided by the embodiment of the utility model adopts the design that the hydraulic telescopic cylinder pushes the V-shaped block to clamp the part, the feeding amount of the telescopic cylinder is controllable, the distance measuring sensor can be additionally arranged on the telescopic cylinder, and the distance measuring sensor can monitor the feeding and withdrawing distances of the telescopic cylinder, so that the motion track of the telescopic cylinder can be accurately mastered, the V-shaped block can be kept at a stable position, and the part can be kept at an accurate position after the part is replaced

(C) The milling machine fixture provided by the embodiment of the utility model adopts the synchronous telescopic hydraulic cylinder, the clamping force is large enough, the workpiece with high clamping rigidity and strength can be ensured, and the work is more stable.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural diagram of a milling machine fixture according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of the milling jig according to the embodiment of the present invention after expansion.

Wherein: 1 a first guide rail; 2, bolts; 3, a hydraulic telescopic cylinder; 4, clamping blocks; 5, workpiece; 6, a chassis; 7 installing bolt holes; 8 a second guide rail; 9 spare bolt holes.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the utility model. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model.

As shown in fig. 1, the present embodiment provides an expandable milling jig capable of holding round and square workpieces. The guide rail structure comprises a circular chassis 6, a first guide rail 1 and a second guide rail 8, wherein a mounting bolt hole 7 is formed in the chassis 6, the first guide rail 1 and the second guide rail 8 are respectively fixed on the mounting bolt hole of the chassis 6 through bolts 2, and specifically, each guide rail is provided with two bolts 2; the first guide rail 1 and the second guide rail 8 are oppositely arranged; a first clamp assembly is arranged on the first guide rail 1 in a sliding mode, a second clamp assembly is arranged on the second guide rail 8, and the first clamp assembly and the second clamp assembly are arranged oppositely. A plurality of spare bolt holes 9 are also formed in the chassis 6; when a larger workpiece 5 needs to be clamped, the bolts on the guide rail are withdrawn, the guide rail is taken down, then the guide rail can be installed in the bolt holes 7 again, then a larger V-shaped block is replaced, the V-shaped blocks 4 with different sizes are clamped, and therefore parts with different sizes can be clamped.

Specifically, in this embodiment, the clamp assembly includes a hydraulic telescopic cylinder 3 and a clamping block 4, two sides of the clamping block 4 are slidably mounted in the guide rail, one end of the clamping block 4 is used for holding a workpiece, and the other end of the clamping block is fixedly connected with a telescopic rod of the hydraulic telescopic cylinder 3.

In the preferred embodiment of the utility model, the clamping block 4 is a V-shaped block, the opening of the head part of the V-shaped block is used for clamping a workpiece, the tail part of the V-shaped block is fixedly connected with the telescopic rod of the hydraulic telescopic cylinder 3, two sides of the V-shaped block extend to the tail part to form a strip plate, the strip plate is arranged in the slide rail and is in small-gap connection with the guide rail, and the guide rail can limit the V-shaped block from left to right, so that the V-shaped block can stably perform linear motion and cannot be separated from the track. Because the force generated by the hydraulic telescopic cylinder 3 is controllable, when clamping a part, the force can be changed according to the rigidity of the part, the pressure on the surface of the part is reduced, and further the stress is reduced, and because the stress area of the V-shaped block is increased, the stress sigma is reduced according to the formula sigma N/An, because of the increase of An, the stress sigma is reduced, and according to the formula sigma E epsilon, E is An elastic modulus constant, and sigma is reduced, epsilon is also reduced, and further the part surface is protected.

In the preferred embodiment of the utility model, the distance measuring sensor is arranged on the hydraulic telescopic cylinder 3, so that the movement distance of the V-shaped block can be monitored, and the workpiece 5 is stably fixed at an accurate position.

The expandable milling machine fixture working method comprises the following steps:

1. firstly, a chassis 6 is cleaned, then a workpiece 5 is placed on the middle part of the chassis 6, then a worker leaves the chassis 6, the hydraulic telescopic cylinder 3 is started, the hydraulic telescopic cylinder 3 moves forwards stably and gradually pushes against a V-shaped block, the V-shaped block is close to the workpiece 5 slowly, when the V-shaped block touches the workpiece 5, the workpiece 5 is surrounded slowly, the position of the workpiece 5 is fixed, the freedom degree of the workpiece 5 is limited, when the clamping force reaches the expected force, the hydraulic telescopic cylinder 3 stops moving, and the distance of the movement of the hydraulic telescopic cylinder 3 is recorded by a distance measuring sensor.

2. When the workpiece 5 is machined, the cutter is removed, the two synchronous hydraulic telescopic cylinders 3 move backwards at the same time, the V-shaped block leaves the workpiece 5, the workpiece 5 is taken out, the next workpiece 5 is placed in, the hydraulic telescopic cylinders 3 move forwards again, the position recorded by the last distance measuring sensor is moved forward, and the workpiece is machined again.

3. When the workpiece is too large and the initial V-shaped block cannot be used, the bolts on the guide rail are loosened, the guide rail is taken down and is installed in the bolt holes capable of machining larger workpieces again, and the guide rail is fixed by the bolts again, so that the larger workpieces can be machined.

It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims (8)

1. An expandable milling machine fixture is characterized by comprising a chassis (6), a first guide rail (1) and a second guide rail (8), wherein the chassis (6) is provided with a mounting bolt hole (7), and the first guide rail (1) and the second guide rail (8) are respectively fixed on the mounting bolt hole of the chassis (6) through bolts; the first guide rail (1) and the second guide rail (8) are oppositely arranged;

a plurality of spare bolt holes (9) are also formed in the chassis (6);

sliding mounting has first anchor clamps subassembly on first guide rail (1), installs second anchor clamps subassembly on second guide rail (8), first anchor clamps subassembly and second anchor clamps subassembly set up relatively.

2. Expandable mill clamp according to claim 1, characterized in that the chassis (6) is a circular chassis.

3. Expandable milling machine clamp according to claim 1, characterized in that the clamp assembly comprises a hydraulic telescopic cylinder (3) and a clamping block (4), both sides of the clamping block (4) being slidably mounted in guide rails.

4. An expandable milling machine jig according to claim 3, wherein one end of the clamp block (4) is used for clamping a workpiece, and the other end is fixedly connected with a telescopic rod of the hydraulic telescopic cylinder (3).

5. Expandable milling machine clamp according to claim 3, characterized in that the clamping blocks (4) are V-shaped blocks.

6. The expandable milling machine jig of claim 3, wherein the V-shaped block has a head opening for holding a workpiece and a tail fixedly connected to a telescopic rod of the hydraulic telescopic cylinder (3).

7. The expandable mill clamp of claim 6, wherein the two lateral tails of the V-block are extended to form a strip that fits within a slide.

8. An expandable milling machine jig according to claim 3, wherein a ranging sensor is mounted on the hydraulic telescoping cylinder (3).

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