Composite tool for thin-wall thrust chamber and anti-deformation machining method

A thrust chamber and thin-walled technology, applied in metal processing equipment, metal processing machinery parts, positioning devices, etc., can solve the inaccurate positioning of the thrust chamber in the circumferential and axial directions, affect the processing quality of the thrust chamber shell, and thrust chamber processing Problems such as poor coaxiality, to achieve stable product quality, avoid deformation, and ensure consistency

Pending Publication Date: 2021-10-01
NINGXIA ORIENT TANTALUM IND
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  • Application Information

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Problems solved by technology

The disadvantage of this method is that the thrust chamber shell can only be positioned through the front top plate. Due to the long shell, there is a certain gap between the front top plate and the thrust chamber shell, which will cause the thrust chamber shell under the action of gravity. The front and rear centers deviate from the center of the lathe chuck, resulting in o

Method used

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  • Composite tool for thin-wall thrust chamber and anti-deformation machining method
  • Composite tool for thin-wall thrust chamber and anti-deformation machining method

Examples

Experimental program
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Effect test

Embodiment 1

[0019] The processing steps are as follows:

[0020] 1) Thrust chamber rough processing: skin the outer circle of the bar, then select a suitable drill according to the throat size of the thrust chamber, and punch a hole in the center of the bar;

[0021] 2) Shaping processing of the shape and surface of the thrust chamber: use a forming drill to shape the two ends of the thrust chamber;

[0022] 3) Flat end face of the thrust chamber: Carry out lathe processing on the front and rear ends of the bar to ensure the parallelism, verticality of the end face and the total length of the thrust chamber;

[0023] 4) Rough machining of the thrust chamber cavity: Use a CNC lathe chuck to clamp the rear end of the thrust chamber blank (the right half in the figure), firstly process the clamping surface at the front end of the thrust chamber blank (the left half in the figure), and then follow the thrust chamber final Dimensions Roughly machine the inner cavity of the front end of the th...

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Abstract

The invention relates to a composite tool for a thin-wall thrust chamber and an anti-deformation machining method. The composite tool is characterized by comprising a left half end and a right half end, wherein the left half end comprises a first cylindrical base; a threaded hole is formed in the middle of one side of the first cylindrical base; the right half end comprises a second cylindrical base; a frustum is arranged on one side of the second cylindrical base; and a screw rod matched with the threaded hole in the first cylindrical base is arranged in the middle of the frustum. According to the composite tool for the thin-wall thrust chamber and the anti-deformation machining method, in the thrust chamber shell machining process, the problem that a thrust chamber shell and the center axis of a clamp are not concentric is solved, and the requirements for the coaxiality and form and location tolerance of the thrust chamber are met.

Description

technical field [0001] The invention relates to a composite tooling for a thin-walled thrust chamber and a processing method for preventing deformation. Background technique [0002] With the development of science and technology and the needs of social development, in the manufacturing process of aerospace products, the requirements for machining accuracy of aerospace products are getting higher and higher, the design of parts tends to be integrated, lightweight, and precise, and the surface structure is becoming more and more complex. , traditional processing methods are difficult to meet the requirements of new machine development. The wall thickness of thrust chamber parts is gradually getting thinner and thinner under the condition of meeting the pressure strength of the chamber, and the shape and position tolerance requirements are getting higher and higher. Thin-walled thrust chamber parts are prone to non-concentricity and deformation of the processing datum during t...

Claims

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Application Information

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IPC IPC(8): B23Q3/12B23P15/00
CPCB23Q3/12B23P15/00
Inventor 梁斌周小军赵刚李刚董凯刘尖
Owner NINGXIA ORIENT TANTALUM IND
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