CN108406319A - Horizontal machine tool multi-angle is without interference processing and loading clamp fixture - Google Patents

Abstract

The invention relates to a clamping fixture for multi-angle non-interference processing of a horizontal machine tool, comprising a bottom plate, a top plate, a three-jaw chuck, a four-jaw chuck and an anti-rotation assembly. The bottom plate is fixedly installed on the workbench of the horizontal machine tool. The four corners of the upper surface of the upper surface are respectively provided with a pillar, the lower end of the pillar is fixed on the bottom plate, the upper end is rigidly connected with the top plate, a three-jaw chuck is arranged above the center position of the upper surface of the bottom plate, and the center position of the lower surface of the top plate is fixed A four-jaw chuck is installed, the upper end of the workpiece is clamped on the four-jaw chuck, and the lower end is clamped on the three-jaw chuck. The anti-rotation component is located on one side of the three-jaw chuck, and the anti-rotation component can limit With the circumferential rotation of the workpiece, the spindle of the horizontal machine tool can pass between two adjacent pillars and process the workpiece. The invention has the advantages of simple clamping and alignment, low parts scrapping rate, reduced equipment cost, reduced clamping times, and improved processing efficiency.

Description

Multi-angle non-interference machining clamping fixture for horizontal machine tool

technical field

The invention relates to the technical field of processing aviation shaft parts, in particular to a clamping fixture for multi-angle non-interference processing of a horizontal machine tool.

Background technique

Many important parts of aviation parts are shaft parts, which have many shapes, cylindrical surfaces, and fine holes, such as landing gear, shaft beams, etc., which cannot be processed by turning. Traditional processing requires multiple clamping and low efficiency. Moreover, the consistency of the processed parts is poor, and there are large tool marks, which makes it difficult to ensure the high precision requirements of the parts, which may easily lead to the scrapping of the parts. During the clamping process of the workpiece, due to the need for multiple clamping, in order to maintain a high consistency as much as possible, it is difficult to align. In order to realize the processing of such parts, turn-milling machine tools are usually used, but the high cost of such machine tools leads to a significant increase in production costs.

Contents of the invention

The object of the present invention is to overcome the disadvantages of the prior art, and provide a multi-angle non-interference processing clamping fixture for horizontal machine tools with simple clamping and alignment, low part scrap rate and reduced equipment cost.

The purpose of the present invention is achieved through the following technical solutions: the multi-angle non-interference processing clamping fixture of the horizontal machine tool includes a base plate, a top plate, a three-jaw chuck, a four-jaw chuck and an anti-rotation assembly, and the base plate is fixedly mounted on a horizontal machine tool. On the machine tool workbench, a pillar is respectively provided on the four corners of the upper surface of the bottom plate, the lower end of the pillar is fixed on the bottom plate, the upper end is rigidly connected with the top plate, and a three-jaw chuck is arranged above the center of the upper surface of the bottom plate. A four-jaw chuck is fixedly installed at the center of the lower surface of the top plate. The upper end of the workpiece is clamped on the four-jaw chuck, and the lower end is clamped on the three-jaw chuck. The anti-rotation component is arranged on one of the three-jaw chucks. side, and the anti-rotation component can limit the circumferential rotation of the workpiece, and the horizontal machine tool spindle can pass between two adjacent pillars and process the workpiece.

Further, a replaceable connecting plate is fixed at the center of the upper surface of the bottom plate, and the three-jaw chuck is detachably mounted on the replaceable connecting plate.

Further, the three-jaw chuck is arranged coaxially with the four-jaw chuck.

Further, the anti-rotation assembly includes an anti-rotation base and an anti-rotation pin, the anti-rotation base is fixed on the bottom plate, and the anti-rotation pin is detachably fixed on the anti-rotation base.

Further, the two ends of the column are respectively welded with the bottom plate and the top plate to form an integral structure.

The present invention has the following advantages:

1. Once the parts are clamped, the shape of most shaft parts can be finished at one time. When the accuracy of the machine tool is guaranteed, the shape of the processed parts has a high consistency.

2. The clamping and alignment is simple, only need to clamp both ends with chucks and debug and align, which greatly reduces the clamping time of multiple clamping in the traditional way and improves the overall processing efficiency.

3. The device is also equipped with an anti-spin structure to prevent the parts from being scrapped due to force and spin during the processing, which further increases the safety of processing and reduces the scrap rate of product processing.

4. The present invention can also replace interchangeable connection plates of different thicknesses, and within a certain size range, parts of different lengths can be processed, and the application range is wide.

5. Compared with the turning-milling compound machine tool: this device realizes part of the functions of the turning-milling compound machine tool, but it is enough to complete the machining of aviation shaft parts, and the processing accuracy is also high, and the cost is much lower than that of the turning-milling compound machine tool.

6. The present invention uses a three-jaw chuck and a four-jaw chuck for joint use. The three-jaw chuck plays the role of clamping and positioning at the same time, and the four-jaw chuck assists in clamping, which reduces the time for alignment and clamping.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is a top view structural schematic diagram of Fig. 1;

In the figure: 1-bottom plate, 2-pillar, 3-top plate, 4-changeable connection plate, 5-horizontal machine tool table, 6-three-jaw chuck, 7-four-jaw chuck, 8-workpiece, 9- Anti-rotation base, 10-anti-rotation pin, 11-horizontal machine tool spindle.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

As shown in Figures 1 and 2, the multi-angle non-interference machining clamping fixture for a horizontal machine tool includes a bottom plate 1, a top plate 3, a three-jaw chuck 6, a four-jaw chuck 7 and an anti-rotation assembly, and the bottom plate 1 is fixedly installed On the horizontal machine tool table 5, the horizontal machine tool table 5 itself has a rotating function, that is to say, the clamping fixture can rotate in the horizontal plane on the horizontal machine tool table 5, and the four corners of the upper surface of the base plate 1 are respectively A pillar 2 is provided, the lower end of the pillar 2 is fixed on the bottom plate 1, and the upper end is rigidly connected with the top plate 3. The pillar 2 needs to be rigid to ensure that the relative position between the top plate 3 and the bottom plate 1 remains unchanged. The bottom plate 1 A three-jaw chuck 6 is provided above the center position of the upper surface of the upper surface, and the three-jaw chuck 6 can simultaneously perform clamping and automatic centering positioning. The center position of the lower surface of the top plate 3 is fixedly equipped with a four-jaw chuck 7, four The jaw chuck 7 can play an auxiliary clamping role. The upper end of the workpiece 8 is clamped on the four-jaw chuck 7, and the lower end is clamped on the three-jaw chuck 6. The anti-rotation assembly is located on the three-jaw chuck 6. One side, and the anti-rotation assembly can limit the circumferential rotation of the workpiece 8, prevent the workpiece 8 from being scrapped due to the forced rotation during the processing, adjust the rotation angle of the horizontal machine tool table 5, and the horizontal machine tool spindle 11 can be rotated from two adjacent Pass between the pillars 2 and process the workpiece 8.

Further, a replaceable connection plate 4 is fixed at the center of the upper surface of the bottom plate 1 , and the three-jaw chuck 6 is detachably installed on the replaceable connection plate 4 . Its function is to process workpieces of different lengths, only need to replace the interchangeable connection plate 4 of different thickness, the distance adjustment between the three-jaw chuck 6 and the four-jaw chuck 7 can be realized.

Further, the three-jaw chuck 6 is arranged coaxially with the four-jaw chuck 7 . Usually, both ends of the shaft parts are coaxial, so there is a high requirement for the coaxiality of the three-jaw chuck 6 and the four-jaw chuck 7, which is beneficial to improve the machining accuracy.

Further, the anti-rotation assembly includes an anti-rotation base 9 and an anti-rotation pin 10 , the anti-rotation base 9 is fixed on the bottom plate 1 , and the anti-rotation pin 10 is detachably fixed on the anti-rotation base 9 . After the workpiece 8 is pre-clamped on the three-jaw chuck 6 and the four-jaw chuck 7, insert the anti-rotation pin 10 into the pin hole corresponding to the workpiece 8, and the size of the anti-rotation pin 10 should be the same as the pin hole corresponding to the workpiece 8 match, and then the workpiece 8 is finally clamped and fixed by the three-jaw chuck 6 and the four-jaw chuck 7 .

Further, the two ends of the column 2 are respectively welded with the bottom plate 1 and the top plate 3 to form an integral structure, so as to ensure that the column 2 is rigidly connected with the bottom plate 1 and the top plate 3, and prevent the fixture from being deformed during the processing process, resulting in the scrapping of the product.

The use steps of the present invention are as follows: S1, confirm the length of the workpiece 8, select the replaceable connecting disc 4 of suitable thickness, and fix the replaceable connecting disc 4 on the base plate 1, and then fix the three-jaw chuck 6 on the replaceable connecting disc. on the disk 4, and complete the coaxial alignment of the three-jaw chuck 6 and the four-jaw chuck 7; S2, put the workpiece 8 between the three-jaw chuck 6 and the four-jaw chuck 7 to realize pre-clamping, but keep In the loose state, select a suitable anti-rotation pin 10, one end of which is inserted into the corresponding pin hole on the workpiece 8, and the other end is fixed on the anti-rotation base 9, and then positioned and clamped by the three-jaw chuck 6, and the four-jaw chuck Disk 7 assists in clamping; S3, install a suitable tool, move the horizontal machine tool spindle 11, and rotate the horizontal machine tool table 5 to a suitable angle, the horizontal machine tool spindle 11 extends into the inside of the fixture from between the two columns 2, The surface of the workpiece 8 is processed. When another surface needs to be processed, the horizontal machine tool spindle 11 is withdrawn, and the horizontal machine tool table 5 is rotated so that the surface of the workpiece 8 to be processed is facing the horizontal machine tool spindle 11. The cutting tool on 11 completes processing.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (5)

1. The clamping fixture for multi-angle non-interference processing of horizontal machine tools is characterized in that it includes a bottom plate (1), a top plate (3), a three-jaw chuck (6), a four-jaw chuck (7) and an anti-rotation assembly. The bottom plate (1) is fixedly installed on the horizontal machine tool workbench (5), and the four corners of the upper surface of the bottom plate (1) are respectively provided with a pillar (2), and the lower end of the pillar (2) is fixed on the bottom plate (1 ), the upper end is rigidly connected with the top plate (3), a three-jaw chuck (6) is provided above the center of the upper surface of the bottom plate (1), and a four-jaw chuck is fixedly installed at the center of the lower surface of the top plate (3) disc (7), the upper end of the workpiece (8) is clamped on the four-jaw chuck (7), the lower end is clamped on the three-jaw chuck (6), and the anti-rotation component is set on the three-jaw chuck (6) The anti-rotation component can limit the circumferential rotation of the workpiece (8), and the horizontal machine tool spindle (11) can pass between two adjacent pillars (2) to process the workpiece (8). 2. The clamping fixture for multi-angle non-interference processing of horizontal machine tools according to claim 1, characterized in that: a replaceable connection plate (4) is fixed at the center of the upper surface of the bottom plate (1), and the three claws The chuck (6) is detachably installed on the exchangeable connecting disc (4). 3. The clamping fixture for multi-angle non-interference machining of a horizontal machine tool according to claim 1, characterized in that: the three-jaw chuck (6) and the four-jaw chuck (7) are arranged coaxially. 4. The clamping fixture for multi-angle non-interference processing of horizontal machine tools according to claim 1, characterized in that: the anti-rotation assembly includes an anti-rotation base (9) and an anti-rotation pin (10), and the anti-rotation base (9) is fixed on the bottom plate (1), and the anti-rotation pin (10) is detachably fixed on the anti-rotation base (9). 5. The clamping fixture for multi-angle non-interference machining of a horizontal machine tool according to claim 1, characterized in that: the two ends of the column (2) are respectively welded to the bottom plate (1) and the top plate (3) to form an integral structure.