Device for rotary compression of thin-walled chambers of rocket engines

 

(57) Abstract:

Usage: metal forming, in particular devices for rotary extrusion. The inventive device comprises a compacting tool and placed between the spindle and the quill tailstock mandrel having a centering section, located at the side of the quill, and raskatnoe plot, located at the side of the spindle and rigidly associated with it. Between these sections are mounted spring-loaded Cams. 3 Il.

The invention relates to the processing of metals by pressure, namely, devices for rotating extrusion of long thin-walled chambers in the bottom.

A device for rotating the compression of the tubular billet containing crimping tool and placed between the spindle and the quill tailstock mandrel having centering and raskatnoe areas, between which are mounted spring-loaded Cams that are installed with the opportunity to interact with the cone spring thrust.

The disadvantages of this device are error-based in the radial direction due to the gaps between the mandrel and the workpiece in the roundness thin-walled zagotovka, you can't use the device for crimping tubular billet with a bottom type cameras rocket engines.

The technical result of the invention is the provision of accurate based products on the mandrel to improve the quality of products and reduce the time of commissioning, which leads to improved performance.

This is achieved in that the device for rotary compression of thin-walled chambers of rocket engines containing crimping tool and placed between the spindle and the quill tailstock mandrel having centering and raskatnoe areas, between which are mounted spring-loaded Cams that are installed with the opportunity to interact with the cone spring thrust, provided with a plunger mounted in the tailstock barrel and mounted on the pusher spring dosyaya sleeve, with raskatnoe section of the mandrel is located on the side of the spindle and rigidly connected with it, and centering the plot side of tailstock quill, when this rod is installed in the cavity of the mandrel with the opportunity to interact with the plunger.

This placement Raskatov and centering sections allows the process rotary compression direct is inoli tailstock allows you to properly center the processed camera on the centering mandrel, and then securely fasten the camera with Cams.

In the proposed device the Cams are two functions of centering and clamping the camera on the mandrel. The camera is installed immediately on the mandrel without pre-Assembly on the mounting fixture.

In Fig.1 shows a device for rotary compression of thin-walled chambers of rocket engines; Fig.2 section a-a in Fig.1; Fig.3 section b-B in Fig.1.

The device comprises a frame consisting of Raskatov section 1, the diameter of which is less than the internal diameter of the chamber 2 by the amount of compression, and the centering section 3 with the base belt 4. The mandrel raschetnym plot 1 is rigidly connected with the spindle of the machine, the centering section 3 of the mandrel is turned to the quill 5 tailstock. Between raschetnym and centering sections in the grooves of the latest installed the Cams 6, spring-loaded in a radial direction by a spring 7. The Cams 6 interact with cone-thrust 8 placed inside the centering section 3 of the mandrel. Rod 8 is spring-loaded in the axial direction by the spring 9 and the movement thrust is limited by the screw mandrel 10 and the groove 11 thrust 8.

To the quill 5 tailstock is rigidly fixed to the plunger 12 in contact with the thrust of 8, and their dosyaya sleeve is limited by the screw 15 tailstock barrel and the groove 16 dosyaya sleeve 13. The device comprises a crimping tool 17.

The device operates as follows.

The processing chamber 2 is set on the mandrel. After switching on the machine chamber 2 shall be expedited to the base surfaces of the belt 4 of the centering section 3 of the mandrel dosyaya sleeve 13 by means of a spring 14 in the beginning of the turn the quill 5 tailstock. Subsequent movement of tailstock quill pusher 12, overcoming the force of the return spring 9, moves the rod 8, which, in turn, pushes the cone Cams 6, overcoming the spring 7. In the process of combining the camera axis with the axis of the mandrel is advanced ramming camera to the bases of the mandrel the influence of spring 14 through docelowy sleeve 13. After disilane and fastening axis of the camera strictly coincides with the axis of the device.

Further, the device with the camera is driven into rotation, and crimping tool 17, moving in the transverse and longitudinal directions, carry out the compression chamber direct way. After the process of compression the tailstock quill is given in the original position, under the influence of return spring 9 of the rod 8 is given in the extreme right position, the Cams 6 under the influence of spring 7 swagatalakshmi the following:

mounting and alignment of the camera on the inner surface (when the base coincide with the bases of the previous processing) on the mandrel with radial brakes can significantly improve the quality of the camera due to combination of the camera axis with the axis of the device and the compression area required cameras direct way, i.e., decreases the beating objetos surface with respect to the previously rolled surfaces in 2-4 times;

labor productivity increases by 1.5-3 times by reducing the time of commissioning;

reducing the amount of metal, as it creates the possibility of using procurement smaller due to the receipt of external surfaces by the method of rolling without additional machining;

reduced complexity and cost of the device in 5-10 times.

DEVICE FOR ROTARY COMPRESSION of THIN-walled CHAMBERS of ROCKET ENGINES containing crimping tool and placed between the spindle and the quill tailstock mandrel having centering and raskatnoe areas, between which are mounted spring-loaded Cams that are installed with the opportunity to interact with the cone spring thrust, characterized in that, to improve the quality of the reduction time of commissioning works, it is equipped with a pusher mounted in the tailstock barrel, and mounted on the pusher spring dosyaya sleeve, with raskatnoe section of the mandrel is located on the side of the spindle and rigidly connected with it, and centering the plot side of tailstock quill, when this craving is installed in the cavity of the mandrel with the opportunity to interact with the plunger.

 

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