CN101612706B - Clamp for end shield of air suction valve of numerical control machining air compressor - Google Patents

Abstract

The invention discloses a numerical control machining air compressor suction valve cover head clamp, which mainly includes a clamping body, several positioning elements and a clamping mechanism, the clamping body is a convex cuboid; the clamping body is positioned by positioning keys and fixed by bolts On the T-shaped groove of the workbench, there is an annular raised surface in contact with the boss at the position corresponding to the annular boss on the bottom surface of the workpiece; two positioning pins are arranged at the two ends of the clamp body and the corresponding holes on the workpiece; The two sides of the clamp body are provided with clamping mechanisms for centrally clamping the workpiece. The fixture of the invention can be quickly positioned and centered and clamped, and the positioning accuracy is greatly improved, and the fixture has a definite position on the workbench, so the coordinate system of the workpiece is also completely determined, so that the work efficiency is greatly improved.

Description

CNC machining air compressor suction valve cover head fixture

Technical field:

The invention relates to a fixture for a numerically controlled machining machine tool, in particular to a special fixture for numerically controlled machining the cover head of an air compressor suction valve.

Background technique:

With the rapid development of computer technology, fundamental changes have taken place in the traditional manufacturing industry. Using CNC machine tools to process products has a good quality consistency, and the machining accuracy and efficiency are much higher than ordinary machine tools, especially when the contour is different. When processing regular, complex curves or curved surfaces, multi-process composite processing and products requiring high precision, its advantages are unmatched by traditional machine tools.

The fixture is an important part of the CNC machining center. Its function is to fix the workpiece at the exact position of the machine tool and complete various processing of the workpiece. It must be positioned accurately and clamped reliably. Obviously, the advantages and disadvantages of its structure have a great impact on the machining accuracy. , Processing efficiency has a crucial impact;

The structure of the air compressor suction valve cap is complicated, there are many circular holes on it, and there are also many raised surfaces. To process it, we must first solve its positioning and clamping. However, there are few special fixtures for processing the air compressor suction valve cap on the CNC machine tool, and it is difficult to find it in the data and on the Internet. Generally, the workpiece is placed on the On the flat vise, use the dial indicator to find the correct position, and then use some pad irons and angle irons to position it, and then clamp it with the flat vise. It is necessary to measure and set the workpiece coordinate system during processing, so the work efficiency is low and the positioning accuracy is not high.

Invention content:

The present invention aims at the above-mentioned problems existing in the existing special fixtures for CNC machine tools, and provides a special fixture for CNC machine tools or machining centers to batch process air compressor suction valve cover heads, which can quickly position the side of the workpiece Centering clamping, and no need to determine the workpiece coordinate system during processing.

In order to achieve the above object, the numerically controlled machining air compressor air compressor suction valve cover head fixture provided by the present invention mainly includes a clamp body and several positioning elements and clamping mechanisms, and the clamp body is a convex cuboid; The key is positioned and the bolt is fixed on the T-shaped groove of the workbench. On the clamp body, there is an annular raised surface in contact with the boss on the bottom surface of the workpiece; at both ends of the clamp body, there are Two positioning pins; the two sides of the clamp body are provided with a clamping mechanism for centering and clamping the workpiece.

The two locating pins are a cylindrical locating pin and a diamond-shaped locating pin.

The clamping mechanism adopts a spiral clamping plate clamping mechanism. The long bolts in this mechanism traverse the clamping body, and the two clamping plates resting on the side of the workpiece and the ribs on the side of the clamping body are centered to clamp the workpiece through nuts; Both ends of the bolt are placed with spherical washers and conical washers that can automatically adapt to the installation positions of a batch of workpieces.

The clamp body is actually provided with auxiliary supports at the overhang corresponding to the workpiece.

Compared with the straightening and clamping of the flat vise, the clamp of the present invention obtained according to the above technical solution has the following advantages: it can be quickly positioned and clamped, the positioning accuracy is greatly improved, and the clamp has a definite position on the workbench. Then the workpiece coordinate system is also completely determined, so that the work efficiency is greatly improved.

Description of drawings:

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the front view of the present invention.

Figure 2 is a perspective view of the present invention.

Figure 3 is a side view of the present invention.

Fig. 4 is a structural schematic diagram of the cover head of the suction valve of the air compressor.

Fig. 5 is a schematic structural diagram of the present invention in use.

Detailed ways:

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

The cover head of the suction valve of the air compressor (as shown in Figure 4) has a complex structure, with multiple circular holes and multiple bosses. When CNC machine tools are processing it, there are certain difficulties in using general fixtures to position and clamp it.

The present invention provides a special clamp to solve such problems, which is mainly shown in Figure 1 and Figure 2, the clamp mainly includes a clamp body, several positioning elements and a centering clamping mechanism, the clamp body 1 is a Convex cuboid, the positioning key 14 is fixed on the bottom of the clamp body 1 by screws 15 and fits with the T-shaped groove, and the clamp body 1 is positioned on the workbench (the structure is not shown in the figure); the bolt 6 passes through the T-shaped groove The clamp body 1 is fixed on the workbench by tightening the nut 8 .

The clamp body 1 is provided with an annular raised surface in contact with the boss corresponding to the annular boss on the bottom surface of the suction valve cover of the air compressor, so that when the suction valve cover of the air compressor contacts the annular surface of the clamp body through the bottom surface, it will One degree of freedom of movement and two degrees of freedom of rotation are restricted.

There are two locating pins at the two ends of the clamp body and the upper holes at the two ends of the air compressor suction valve cover. The locating pins are a cylindrical positioning pin 4 and a rhombic positioning pin 3. Holes inserted into these two dowels restrict their two degrees of freedom of movement and one degree of freedom of rotation.

The two sides of clamp body 1 are equipped with a clamping mechanism for clamping the cover head of the air compressor suction valve in the center. The screw clamping mechanism is adopted. The long bolt 5 in this mechanism crosses the clamp body 1 and is tightened by nut 13. Two pressure plates 2 resting on the side of the workpiece and the ribs on the side of the clamping body, so as to realize the centering and clamping of the side of the air compressor suction valve cover; the two ends of the long bolt 5 are sequentially placed with a conical washer 10 and a spherical washer 9. This enables the fixture to automatically adapt to the installation position of a batch of workpieces.

Because the overhang of the suction valve cap of the air compressor is longer, in order to improve the rigidity, an auxiliary support 12 is added on the clamp body corresponding to the overhang.

According to the special fixture obtained according to the above-mentioned technical principle, two positioning keys 14 are fixed on the bottom of the fixture body with screws 15 to cooperate with the T-shaped groove during use, and the fixture is positioned on the workbench. Then fix the fixture on the workbench with bolts 6, nuts 8 and washers 7.

The cover head of the air compressor suction valve is in contact with the annular convex surface of the clamp body through the annular boss on the bottom surface, which limits one degree of freedom of movement and two degrees of freedom of rotation; it is inserted into the air compressor through a cylindrical positioning pin and a diamond-shaped positioning pin In the corresponding hole of the suction valve cap, two degrees of freedom of movement and one degree of freedom of rotation can be restricted, that is, the complete positioning of the suction valve cap of the air compressor is realized by two pins on one side.

Using long bolts, spherical washers, conical washers, nuts, pressure plates and side ribs on the side of the clamp body, the centering and clamping of the side of the air compressor suction valve cover is realized. The matching of the spherical washer and the conical washer can automatically adapt to a batch of workpieces. installation location.

Since the overhang of the suction valve cover of the air compressor is long, in order to improve the rigidity, an auxiliary support is added at the overhang.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

1. clamp for end shield of air suction valve of numerical control machining air compressor, it mainly comprises a clamp body and several setting elements and clamp mechanism, described clamp body is a convex cuboid; Clamp body, is provided with and the contacted annular protrusion face of boss with workpiece bottom annular boss corresponding position on the clamp body on the T-slot of workbench by positioning key location, bolting; The corresponding position, hole is provided with two alignment pins on clamp body two ends and the workpiece; The clamp body two sides are provided with the clamp mechanism that workpiece is clamped, it is characterized in that, stay bolt in this mechanism passes across clamp body, make the two pressing plate centering clamping work pieces that ride on side surface of workpiece and the clamp body side fin by nut, the spheric washer and the taper faced washer that can adapt to a collection of workpiece installation site automatically all laid at described stay bolt two ends, thereby realizes that workpiece is located centering fast to be clamped.

2. clamp for end shield of air suction valve of numerical control machining air compressor according to claim 1 is characterized in that, described two alignment pins are a cylinder alignment pin and a rhombus alignment pin.

3. clamp for end shield of air suction valve of numerical control machining air compressor according to claim 1 is characterized in that, is provided with aiding support at the place of overhanging corresponding to workpiece on the described clamp body.

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