Gas turbine coupling half flange hole milling positioning clamp

Abstract

The utility model provides a gas turbine coupling half flange hole milling positioning clamp which comprises a bottom plate, a positioning cover plate and a positioning mandrel. The bottom of the bottom plate is fixed to the workbench through a pressing plate. The upper end of the bottom plate is connected with the positioning cover plate; the positioning mandrel is connected with the bottom plate through a connecting screw; the positioning mandrel is used in cooperation with the fastening nut, the outer diameter of the positioning cover plate abuts against the inner diameter of the coupling flange left half ring and the inner diameter of the coupling flange right half ring, and the positioning cover plate is locked along with the fastening nut. According to the utility model, the part processing state of the two coupling half flanges during combined milling of end face positioning connecting holes is met, the inner diameter and outer diameter position precision is controlled under the condition that the butt joint gap is met by limiting the outer diameter and inner diameter positions of the two coupling half flanges, the problem that the positioning is difficult by an operator is solved, and the working efficiency is improved. And the preparation work of an operator before processing is simplified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of machining, concretely relates to a gas turbine coupling half flange hole milling positioning fixture. BACKGROUND

[0002] The coupling is an important component in the gas turbine, which connects various rotors, compensates axial and radial displacement, and ensures synchronous rotation of the rotors during operation. The left side is connected with the speed reducer, and the right side is connected with the gas turbine turbine, which plays an important role in torque transmission, displacement compensation, buffer provision, and shock absorption in the gas turbine. The installation quality of the coupling directly affects the efficiency and reliability of the gas turbine. The connection between the coupling and the speed reducer side is completed by the flange combination with a gap of not more than 0.1mm between the two half gaps. The 24 positioning connection holes on the two half flanges are uniformly distributed, with a position tolerance of not more than 0.03 and a precision of not more than 0.015. Every other hole is divided into two groups, one connected and one tightly fitted, to complete the shock absorption measures.

[0003] When milling the end face positioning connection hole of the gas turbine coupling half flange, the two half coupling flanges need to be combined together for machining, and the roundness of the inner hole and the outer diameter of the two half flanges before machining should be not more than 0.013. It is difficult to position the two half flanges only by manual positioning of the operator in the natural state of the two half flanges.

[0004] The coupling half flange is divided into a coupling half flange left half ring and a coupling half flange right half ring. When a pair of coupling half flanges are assembled, they need to be combined for use. The 24 positioning holes on the end face cooperate with the butt joint piece strictly. In order to meet the interchangeability of each pair of coupling half flanges, the product consistency in manufacturing needs to be ensured, and it is difficult for the operator to meet the requirements without auxiliary positioning device. UTILITY MODEL CONTENTS

[0005] The utility model aims at various problems existing in the milling of the end face connection positioning hole of the two coupling half flanges in the combined state, and proposes a gas turbine coupling half flange hole milling positioning fixture to solve the difficulties existing in the machining.

[0006] A gas turbine coupling half flange hole milling positioning fixture, comprising a base plate, a positioning cover plate and a positioning mandrel; the bottom of the base plate is fixed on the workbench through a pressing plate; the upper end of the base plate is connected with the positioning cover plate; the positioning mandrel is connected with the base plate through a connecting screw; the positioning mandrel is used in cooperation with a locking nut, and the outer diameter of the positioning cover plate abuts against the inner diameter of the coupling flange left half ring and the coupling flange right half ring, and is locked with the locking nut.

[0007] Further, the locking nut is installed with a balance sleeve at the lower end.

[0008] The utility model discloses beneficial effect lies in: the utility model satisfies the part processing state of two coupling half flanges when the end face of combination is milled positioning connecting hole, through the limitation of two coupling half flanges outer diameter and inner diameter position, control inner diameter and outer diameter position precision under the condition of satisfying its butt joint clearance, solved the problem of difficult positioning by operator, and the operator's preparation work before processing is simplified, and this fixture is simple and convenient to operate, and the operator's operation specification is solidified, and the consistency of product is well guaranteed when batch production, improves the part production efficiency, and shortens the production cycle. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0010] The utility model will be further described in connection with the drawings.

[0011] In order to satisfy the butt joint surface clearance of two half flanges not to be greater than 0.1mm in manufacturing, and the combined inner hole and outer diameter roundness of two half flanges is not greater than 0.013, and the end face of 24 positioning connecting holes is milled, a kind of gas turbine coupling half flange hole milling positioning fixture is proposed to ensure workpiece production manufacturing state;

[0012] Including bottom plate 1, connecting screw 2, positioning cover plate 5, positioning mandrel 6 and fastening nut 7 piece, bottom plate 1 lower plane is connected with equipment workbench, is fixed to the machining center work platform center position through pressing plate, bottom plate 1 is fixed using fastening nut with positioning cover plate 5, balance sleeve 8 is placed in the lower part of fastening nut 7, when fastening nut is tightened, increase the friction area of fastening nut, make the position of coupling flange half ring 3 balanced fixed;Positioning mandrel 6 is connected with bottom plate 1 using connecting screw 2, positioning mandrel 6 is used in conjunction with fastening nut 7, the outer diameter of positioning cover plate 5 is in close contact on the inner diameter of left half ring 4 of coupling flange and right half ring 3 of coupling flange, along with the fastening of fastening nut 7, make the position of coupling flange half ring fixed, limit workpiece movement.

[0013] The above only for preferred embodiment of the utility model has been, and is not used for limiting the utility model, for the skilled person in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A boring positioning jig for a gas engine coupling half flange, characterized in that, It includes bottom plate (1), locating cover plate (5) and locating mandrel (6); the bottom plate (1) bottom is fixed on the workbench by pressing plate; the upper end of the bottom plate (1) is connected with the locating cover plate (5); the locating mandrel (6) is connected with the bottom plate (1) through connecting screw (2); the locating mandrel (6) is used in cooperation with fastening nut (7), the outer diameter of the locating cover plate (5) is tightly close to the inner diameter of the left half ring (4) and the right half ring (3) of the shaft coupling flange, and is locked with the fastening nut (7).

2. A kind of semi-flange boring positioning fixture of coupling for gas engine according to claim 1, characterized in that, The lower end of the fastening nut (7) is provided with balance sleeve (8).

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