CN202097621U - Special fixture for air cylinder - Google Patents

Abstract

A special fixture for an air cylinder comprises a draw bar, a draw bar sleeve, a pressure plate, a film, a spring, a screw, a pressing shaft, a press claw and a clamp claw. The draw bar sleeve and the pressure plate are fixed on the draw bar, the spring, the pressing shaft and the press claw are connected onto the pressure plate, and the film, the clamp claw, the screw, a connecting plate and a supporting seat are fixed on a spindle connecting plate. When the air cylinder is machined, the draw bar drives the draw bar sleeve to move forwards under action of a fixture oil cylinder, so that the film is pushed to be opened, and the clamp claw is opened. Simultaneously, the draw bar drives the pressure plate and the pressing shaft to move rightwards together, when the pressure plate and the pressing shaft move rightwards, the screw slides into a groove of the pressing shaft, the pressing shaft and the press claw rotate at a certain angle under action of the spring, and accordingly feeding is convenient. When a workpiece is clamped, the clamp claw leads an outer circle of the air cylinder to center automatically under action of elastic restoring force of the fixture film, the press claw is driven to move leftwards by the draw bar so as to press the right end surface of the air cylinder, and accordingly the effect of radial centering and end surface compaction is achieved.

Description

The cylinder special fixture

Technical field

The utility model belongs to cylinder anchor clamps field.

Background technology

Cylinder is the vital part of various types of compact machine parts, and cylinder bores processing is the critical process of this part.Adopt grinding at present and grind two kinds of process programs, reach the final precision of endoporus.More special because of the shape of cylinder, when adopting grinding process, in order to reduce clamping deformation, anchor clamps are difficult points of current techniques.The installation way of existing compressor cylinder, adopt two kinds of versions: a kind of is to adopt end face to compress (like Fig. 1), and manually expect in the school, keeps the axiality of cylinder and anchor clamps, drives paw with oil cylinder again and compress cylinder automatically.Another kind of cylindrical clamping, the end face location (like Fig. 2) of adopting, oil cylinder drives pull bar and drag link sleeve backs down film, and claw opens, and manually material loading under the effect of thin flexible film restoring force, thereby is realized clamping cylinder cylindrical.More than the shortcoming of two kinds of anchor clamps forms be: first kind of structure, end face compress, manually the school material, operation is cumbersome, production efficiency is low.Second kind of structure clamps cylindrical, because the cylinder poor rigidity under the effect of pellicle fixture clamping force, has serious clamping deformation, circularity, the cylindricity of endoporus are poor.Therefore, more than two kinds of structures can only be used for the semifinishing of cylinder bores, final precision adopts grinding technics to guarantee.

The utility model content

The technical problem that the utility model will solve is the defective that overcomes technology; Provide a kind of employing radial centering, end face to compress; Reduce workpiece deformation and the school material time; Guarantee the precision of cylinder bores grinding, enhance productivity, enlarged the cylinder special fixture of the range of application of numeral-controlled internal grinder.

In order to solve the problems of the technologies described above, the utility model provides following technical scheme:

The cylinder special fixture comprises that pull bar, drag link sleeve, platen, film, spring, screw, compression axis, paw, claw, cylinder, terminal pad, main shaft connect dish, supporting base;

Said drag link sleeve and platen are fixed on the pull bar;

Said spring, compression axis and paw are connected on the platen;

Said film, claw, screw, terminal pad and supporting base are fixed on main shaft and connect on the dish.

The utility model compact conformation, efficient height, the machining accuracy of part is high; Easy to operate, save non-cutting time, improve work efficiency, can improve the practicality and the widespread popularity of numeral-controlled internal grinder.

Description of drawings

Accompanying drawing is used to provide the further understanding to the utility model, and constitutes the part of specification, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model.In the accompanying drawings:

The chuck sketch map that Fig. 1 compresses for end face;

Fig. 2 is the chuck sketch map that radially clamps;

Fig. 3 is the utility model clamp structure sketch map.

Mark is following among the figure: the 1-pull bar, and the 2-drag link sleeve, the 3-platen, the 4-film, the 5-spring, the 6-screw, the 7-compression axis, the 8-paw, the 9-claw, the 10-cylinder, the 11-terminal pad, the 12-main shaft connects dish, 13-supporting base, 14-main shaft.

The specific embodiment

Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.

To the problem that the prior art scheme occurs, the purpose of the utility model has provided install on a kind of numeral-controlled internal grinder rational in infrastructure, safe, easy to operate, high efficiency, has guaranteed the novel clamp of machining accuracy easily.

The utility model comprises pull bar 1, drag link sleeve 2, platen 3, film 4, spring 5, screw 6, compression axis 7, paw 8, claw 9.Drag link sleeve 2 and platen 3 are fixed on the pull bar 1, and spring 5, compression axis 7 and paw 8 are connected on the platen 3, and film 4, claw 9, screw 6, terminal pad 11 and supporting base 13 are fixed on main shaft and connect on the dish 12.During processing cylinder 10, under the effect of anchor clamps oil cylinder, pull bar 1 drives drag link sleeve 2 and moves forward, and backs down film 4, and claw 9 opens.Simultaneously, pull bar 1 drives platen 3 and compression axis 7 moves right together, moves right in the process, and screw 6 slides in the groove of compression axis 7, and compression axis 7 and paw 8 rotate to an angle under the effect of spring 5, can make things convenient for material loading.When workpiece clamps, under the effect of anchor clamps thin flexible film restoring force, make the self-centering of cylinder cylindrical through claw 9, and paw 8 under the drive of pull bar 1 to left movement, compress cylinder 10 right sides, thereby reach radial centering, the effect that end face compresses.

What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (1)

1. the cylinder special fixture is characterized in that,

Comprise that pull bar, drag link sleeve, platen, film, spring, screw, compression axis, paw, claw, cylinder, terminal pad, main shaft connect dish, supporting base;

Said drag link sleeve and platen are fixed on the pull bar;

Said spring, compression axis and paw are connected on the platen;

Said film, claw, screw, terminal pad and supporting base are fixed on main shaft and connect on the dish.

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