Turbocharger housing machining fixture with on-line adjustment of rotary positioning datum

A turbocharger and positioning reference technology, applied in the field of fixtures, can solve problems such as unsatisfactory clamping effect of machining fixtures, complex turbocharger shell structure, and difficult adjustment, so as to reduce abnormal downtime, The structure is compact and the effect of improving the economic benefits of the enterprise

Active Publication Date: 2022-07-26
WESCAST IND CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems such as the complex structure of the turbocharger housing, the lack of special machining fixtures, the unsatisfactory clamping effect of the existing machining fixtures, and the difficulty and time-consuming adjustment when the positioning reference position changes. , providing a turbocharger housing machining fixture whose rotation positioning reference can be adjusted online

Method used

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  • Turbocharger housing machining fixture with on-line adjustment of rotary positioning datum
  • Turbocharger housing machining fixture with on-line adjustment of rotary positioning datum
  • Turbocharger housing machining fixture with on-line adjustment of rotary positioning datum

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] like figure 1 As shown in the figure, a machining fixture for a turbocharger housing with an on-line adjustment of the rotational positioning datum includes a base 1, the base 1 has a horizontal bottom plate 1a and a vertical plate 1b arranged vertically, and the horizontal bottom plate 1a is connected with A first vertical plate 2 is arranged opposite the vertical plate 1b, and a second vertical plate 3 is arranged on the horizontal bottom plate 1a on the same side of the vertical plate 1b and the first vertical plate 2; A positioning seat 18 is installed on the upper and middle part of the vertical plate 1b, the positioning seat 18 is sleeved with the expansion mandrel assembly 6, and one end of the positioning seat 18 away from the vertical plate 1b is provided with an angular positioning Pin 19, the vertical plate 1b is provided with a positioning reference adjusting mechanism 20 for adjusting the positioning seat 18 near the positioning seat 18; The first position...

Embodiment 2

[0081] This embodiment provides a method of using the clamp in the first embodiment.

[0082] like Figure 25 As shown, the positioning reference of the turbocharger housing is the inner hole 119 on the flange face of the outlet, the end face 120 of the outlet flange, and the locating pin hole 118 of the lug.

[0083] During operation, the action sequence of the fixture in this embodiment is as follows:

[0084] Step 1: The hollow oil cylinder 77 is tightened, the expansion mandrel 80 is radially expanded, and the inner hole 119 of the air outlet flange surface of the turbocharger casing is centered;

[0085] Step 2: Each pressure plate of the first positioning and clamping cylinder 7, the second positioning and clamping cylinder 8 and the third positioning and clamping cylinder 9 respectively clamps the back of the air outlet flange end face 120, so that the air outlet of the turbocharger casing is The blue end face 120 is fitted with the end face of the positioning seat 18...

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Abstract

The invention discloses a machining jig for a turbocharger casing with on-line adjustment of a rotational positioning reference, comprising a base, a first vertical plate, a second vertical plate, an expansion mandrel assembly, a first positioning and clamping cylinder, and a second positioning Clamping Cylinder, Third Positioning Clamping Cylinder, First Auxiliary Support Cylinder, Second Auxiliary Support Cylinder, Third Auxiliary Support Cylinder, Fourth Auxiliary Support Cylinder, First Auxiliary Support Clamping Cylinder, Second Auxiliary Support Clamping Cylinder , The third auxiliary support clamping cylinder, auxiliary clamping cylinder, positioning seat, angular positioning pin and positioning reference adjustment mechanism and other components. The fixture has compact structure and reasonable arrangement of components, which can be used for machining positioning and clamping of turbocharger housing, with high repeat positioning accuracy and good clamping rigidity; at the same time, it can quickly adjust the position of the positioning seat online and lock the positioning. The characteristics of the seat greatly reduce the difficulty of adjusting the positioning seat, reduce the abnormal downtime, effectively ensure the machining quality of the turbocharger shell, and improve the economic benefits of the enterprise.

Description

technical field [0001] The invention relates to the technical field of tooling and fixtures, in particular to a machining fixture for a turbocharger casing whose rotational positioning datum can be adjusted online. Background technique [0002] The use of turbochargers is an effective means to improve engine efficiency, reduce fuel consumption, and reduce vehicle emissions of harmful gases. The turbocharger housing is the core component of the engine and is a high-precision component that requires high machining accuracy. [0003] For example, Chinese utility model patent (publication number: CN207058140U) discloses a circular arc contour milling fixture for turbocharger shell, including a bottom plate, a mounting plate, an angular positioning seat, a positioning seat, a dot seat, a pressing cylinder, a support Cylinder etc. The mounting plate is provided with a positioning seat placement hole group, the positioning seat placement hole group connects the positioning seat a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/00
CPCB23Q3/00B23Q2703/04B23Q2703/10
Inventor 李涛盛超立
Owner WESCAST IND CHINA CO LTD
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