CN-121989067-A - Axial flow compressor diversion shell machining tool and method

CN121989067ACN 121989067 ACN121989067 ACN 121989067ACN-121989067-A

Abstract

The invention provides a machining tool and a machining method for a guide shell of an axial flow compressor, belongs to the technical field of compressor machining, and is used for solving the problem of low alignment and positioning efficiency of the guide shell. The invention discloses a processing tool for a guide shell of an axial flow compressor. The fixed base is provided with a positioning groove and a positioning hole. The diameter of the positioning groove is matched with the finish machining size of the outer diameter of the diversion shell. The fixture body is provided with a spigot positioning table and a limiting table. The fixture body is installed on unable adjustment base through the cooperation of tang locating bench and locating hole. The diameter of the limiting table is matched with the diameter of the reference circle of the inner cavity of the diversion shell. The connecting rod is used for locking the clamp body and the fixed base so as to clamp the diversion shell. The invention can realize the finish machining of the upper and lower areas of the guide shell by using one set of tool, reduces the clamping difficulty, does not need secondary alignment, is beneficial to improving the machining precision of the guide shell and can also improve the machining efficiency of the guide shell.

Inventors

ZHU GUANHUA
HAO CHUNNA
GUAN XIN
GUO FENG
SHI TIANXIANG

Assignees

沈阳透平机械股份有限公司
沈鼓集团股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260209

Claims (10)

1. The axial flow compressor diversion shell processing tool is characterized by comprising a fixed base, a clamp body and a connecting rod; the diameter of the positioning groove is matched with the finish machining size of the outer diameter of the diversion shell, and the positioning groove is used for realizing correction-free clamping after the diversion shell is overturned; The fixture body is provided with a spigot positioning table and a limiting table, and is arranged on the fixed base through the cooperation of the spigot positioning table and the positioning hole; the connecting rod is used for locking the clamp body and the fixed base so as to clamp the diversion shell.
2. The axial flow compressor diversion shell processing tool of claim 1, wherein the fixed base is provided with a first connecting hole, and the first connecting hole is positioned in the positioning groove; the clamp body is provided with a first through hole; one end of the connecting rod penetrates through the first through hole to be connected with the first connecting hole so as to lock the clamp body with the fixed base.
3. The fixture for machining the guide shell of the axial flow compressor according to claim 1, wherein the fixing base is provided with a second connecting hole, and the guide shell is connected with the fixing base through the second connecting hole after being turned over.
4. The axial flow compressor guide shell machining tool according to claim 1, wherein the clamp body is stepped and comprises a large-diameter section, a transition section and a small-diameter section which are sequentially connected; The spigot positioning table is the small-diameter section; The limiting table is the large-diameter section.
5. The fixture for machining the guide shell of the axial flow compressor of claim 4, wherein the fixture body is provided with a second through hole, and the second through hole penetrates through the large-diameter section, the transition section and the small-diameter section in sequence.
6. The axial compressor guide shell machining tool of claim 1, wherein the positioning groove is in clearance fit with the guide shell outer diameter, the spigot positioning table is in clearance fit with the positioning hole, and the limiting table is in clearance fit with an inner cavity reference circle of the guide shell, and the fit tolerance is within a preset range.
7. The tool for machining the guide shell of the axial flow compressor of claim 1, wherein the fixing base is made of Q345R, and the clamp body is made of Q235B.
8. A method for processing a guide casing of an axial flow compressor by using the tool for processing the guide casing of the axial flow compressor according to any one of claims 1 to 6, which is characterized by comprising the following steps: s1, clamping a diversion shell on the processing tool; s2, clamping the processing tool by using a machine tool claw, and performing surface marking alignment on the processing tool; s3, finishing the upper area of the diversion shell; s4, after the diversion shell is disassembled and turned over, the diversion shell is fixed in the positioning groove; s5, finishing the lower area of the diversion shell.
9. The method for machining a guide casing of an axial flow compressor according to claim 8, wherein the step S1 includes: s11, placing the diversion shell on the fixed base; S12, inserting the spigot positioning table of the clamp body into the positioning hole of the fixed base through the inner cavity of the guide shell; s13, locking the clamp body and the fixed base by utilizing the connecting rod so as to clamp the diversion shell.
10. The method for machining a guide casing of an axial flow compressor according to claim 8, wherein the step S4 includes: s41, removing the connecting rod to detach the clamp body from the fixed base; S42, turning over the diversion shell, and placing the turned diversion shell in the positioning groove; s43, fixing the diversion shell in the positioning groove.

Description

Axial flow compressor diversion shell machining tool and method Technical Field The invention belongs to the technical field of compressor machining, and particularly relates to a tool and a method for machining a guide shell of an axial flow compressor. Background The guide shell at the inlet of the axial flow compressor has a special shape, and after rough machining is finished, the guide shell cannot be directly clamped by a machine tool claw during finish machining, and a tool clamp is needed to be used during machining. The existing process needs to use two sets of tools, namely, firstly clamping the shell on a first set of tools, aligning and then processing a partial area, and then disassembling the shell, turning over and clamping the shell again to a second set of tools, and aligning again to process the residual area. The process needs to be disassembled, turned over and aligned twice, so that time and labor are consumed, the machining efficiency is affected, and the roundness and concentricity precision of the shell can be reduced due to repeated clamping. Disclosure of Invention Therefore, the technical problem to be solved by the invention is to provide the processing tool and the processing method for the guide shell of the axial flow compressor, which can improve the processing efficiency and the processing quality. In order to solve the problems, the invention provides a machining tool for a guide shell of an axial flow compressor, which comprises a fixed base, a clamp body and a connecting rod. The fixed base is provided with a positioning groove and a positioning hole. The diameter of the positioning groove is matched with the finish machining size of the outer diameter of the guide shell, and the positioning groove is used for realizing correction-free clamping after the guide shell is overturned. The fixture body is provided with a spigot positioning table and a limiting table. The fixture body is installed on unable adjustment base through the cooperation of tang locating bench and locating hole. The diameter of the limiting table is matched with the diameter of the reference circle of the inner cavity of the guide shell, and the limiting table is used for positioning the guide shell during initial clamping. The connecting rod is used for locking the clamp body and the fixed base so as to clamp the diversion shell. Wherein, be equipped with first connecting hole on the unable adjustment base. The first connecting hole is positioned in the positioning groove. The clamp body is provided with a first through hole. One end of the connecting rod penetrates through the first through hole to be connected with the first connecting hole so as to lock the clamp body and the fixed base. Wherein, be equipped with the second connecting hole on the unable adjustment base. After the diversion shell is turned over, the diversion shell is connected with the fixed base through the second connecting hole. The clamp body is in a ladder shape and comprises a large-diameter section, a transition section and a small-diameter section which are sequentially connected. The spigot positioning table is a small-diameter section. The limiting table is a large-diameter section. Wherein, be equipped with the second through-hole on the anchor clamps body. The second through hole sequentially penetrates through the large-diameter section, the transition section and the small-diameter section. The positioning groove is in clearance fit with the outer diameter of the guide shell, the spigot positioning table is in clearance fit with the positioning hole, and the limiting table is in clearance fit with the reference circle of the inner cavity of the guide shell, and the fit tolerance is within a preset range. Wherein, the material of the fixed base is Q345R, and the material of the clamp body is Q235B. The invention also provides a processing method of the guide shell of the axial flow compressor, which utilizes the processing tool of the guide shell of the axial flow compressor and comprises the following steps: S1, clamping a diversion shell on a processing tool; s2, clamping a processing tool by using a machine tool claw, and performing surface marking and alignment on the processing tool; S3, finishing the upper area of the diversion shell; s4, disassembling the diversion shell, overturning and fixing in the positioning groove; S5, finishing the lower area of the diversion shell. Wherein, step S1 includes: s11, placing the diversion shell on a fixed base; s12, inserting the spigot positioning table of the clamp body into the positioning hole of the fixed base through the inner cavity of the guide shell; s13, locking the clamp body and the fixed base by using the connecting rod so as to clamp the diversion shell. Wherein, step S4 includes: s41, removing the connecting rod to detach the clamp body from the fixed base; s42, turning over the diversion shell, and placing the turned diversion shell in the positioning groove.