Five-axis milling side slot special clamp for flame tube of gas turbine

Abstract

The utility model provides a special fixture for a five-axis milling side slot of a flame tube of a gas turbine. The special fixture comprises a positioning device and a pressing device, the positioning device comprises a base body, a positioning molded surface, a sliding block fixing piece, a lead screw and a sliding block. The positioning molded surface is mounted on the base body; the sliding block fixing piece is fixed on the base body; the sliding block is located in the sliding block positioning piece sliding way, and the sliding block is adjusted to move front and back through the lead screw. The pressing device comprises a pressing plate, a connecting rod and a circular pressing plate; the pressing plate is fixed on the base body, the connecting rod is fixed on the base body, and an inner hole of the round pressing plate penetrates into a bolt position of the connecting rod and is fixed through a nut. According to the fixture, a five-axis numerical control machining center is utilized, rapid clamping and positioning can be carried out through a tool, the machining position is determined by aligning the datum plane and the datum hole, rapid positioning and machining are achieved, and the production efficiency is doubled compared with a three-axis numerical control machining center.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gas turbine fixture field, concretely relates to a special fixture of five -axis milling side groove of gas turbine flame tube. BACKGROUND

[0002] The gas turbine flame tube is one of the core components of the gas turbine and is an important component of the combustion chamber. The combustion chamber is a device for mixing high-pressure gas with fuel and burning them, and is a component for converting the chemical energy of fuel into heat energy. After the fuel is burned, the gas temperature is greatly increased, and the high-temperature and high-pressure gas flowing out of the combustion chamber has very high heat energy and potential energy. The flame tubes are arranged in a circumferential form in the combustion chamber. According to the flame tubes of different models, the seat ring angles and sizes of the flame tubes are inconsistent, and the number of flame tubes required by the combustion chamber is also different. There is a side groove on each of the left and right sides of the flame tube seat ring. When the flame tubes are assembled, a sealing piece is inserted into the side groove to position the assembly position of the flame tubes and ensure the gap between the flame tubes. When machining, the consistency of the side groove should be ensured to enable the flame tube assembly to be assembled more accurately and ensure the normal operation of the combustion chamber. SUMMARY

[0003] The utility model discloses a kind of special fixtures of five -axis milling side groove of gas turbine flame tube.

[0004] A special fixture of five -axis milling side groove of gas turbine flame tube, including positioning device and pressing device;The positioning device includes base body, positioning profile, slider fixing piece, screw rod and slider;The positioning profile is installed on base body;The slider fixing piece is fixed on base body;The slider is located in slider positioning piece slide, and slider moves forward and backward by screw rod adjustment;The pressing device includes pressing plate, connecting rod and round pressing plate;The pressing plate is fixed on base body, the connecting rod is fixed on base body, and the inner hole of round pressing plate is inserted into the bolt position of connecting rod, is fixed by nut.

[0005] Further, the fixture further includes a reference; The reference reference hole and reference surface;The reference hole is located on the base body, and the distance between the center of the reference hole and the positioning profile can determine the machining position of the flame tube.

[0006] The utility model has the advantages that: the utility model utilizes five -axis numerical control machining center, and quick clamping positioning can be carried out through tooling, the machining position is determined by aligning reference surface and reference hole, a fixture for realizing quick positioning machining is realized, and the production efficiency is doubled relative to three -axis numerical control machining center. BRIEF DESCRIPTION OF DRAWINGS

[0007] Fig. 1 It is the main view of the utility model structure;

[0008] Fig. 2 It is the plan view of the utility model structure. DETAILED DESCRIPTION

[0009] The utility model will be further described below with reference to the drawings.

[0010] As Figs. 1-2 shown, a kind of gas turbine flame tube five-axis milling side slot special fixture, including positioning device and pressing device;Positioning device includes base body 4, positioning profile 5, slider fixing piece 6, screw rod 7 and slider 8;Positioning profile 5 is installed on base body 4;For positioning flame tube seat circle arc surface;

[0011] Slider fixing piece 6 is fixed on base body 4;Slider 8 is located in slider positioning piece 6 slide, and slider 8 is adjusted to move back and forth by screw rod 7;For positioning flame tube seat circle boss, the uniqueness of flame tube positioning can be guaranteed by positioning profile 5 and slider 8, and quick positioning can be carried out.

[0012] Pressing device includes pressing plate 9, connecting rod 10 and round pressing plate 11;Pressing plate 9 is fixed on base body 4, for pressing flame tube seat circle position;

[0013] Connecting rod 10 is fixed on base body 4, and the inner hole of round pressing plate 11 is inserted into the bolt position of connecting rod 10, is fixed by nut, for pressing flame tube inlet cone position, auxiliary fixed flame tube.

[0014] Fixture further includes reference;Reference reference hole 12 and reference surface 13;Reference hole 12 is located on base body 4, and the distance between the center of reference hole 12 and positioning profile 5 can determine the processing position of flame tube, and reference surface 13 is used to align flame tube, and quick alignment processing can be realized.

[0015] The above only for the preferred embodiment of the utility model has been described, and is not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes.It is contained in the protection scope of the utility model that any modification, equivalent replacement, improvement etc.that is made within the spirit and principles of the utility model.

Claims

1. A fixture for five-axis milling of a side slot of a combustor basket of a gas turbine, characterized in that The positioning device comprises a base body (4), a positioning profile (5), a slider fixing member (6), a screw rod (7) and a slider (8); the positioning profile (5) is installed on the base body (4); the slider fixing member (6) is fixed on the base body (4); the slider (8) is located in the sliding way of the slider fixing member (6) and is adjusted to move forward and backward by the screw rod (7); the pressing device comprises a pressing plate (9), a connecting rod (10) and a round pressing plate (11); the pressing plate (9) is fixed on the base body (4), the connecting rod (10) is fixed on the base body (4), the inner hole of the round pressing plate (11) penetrates the bolt position of the connecting rod (10) and is fixed by a nut.

2. The special fixture for milling side slots of a gas turbine flame tube according to claim 1, characterized in that The clamp further comprises a reference, which comprises a reference hole (12) and a reference surface (13); the reference hole (12) is located on the base body (4) and the distance between the center of the reference hole (12) and the positioning profile (5) can determine the processing position of the flame tube.

Images