Positioning tool for roller coating of inner cavity of special-shaped combustion chamber

Abstract

The utility model discloses a positioning tool for roller coating of an inner cavity of a special-shaped combustion chamber. The positioning tool comprises a supporting outer ring, a clamping inner ring and a bolt, the inner wall of the supporting outer ring is a circular-truncated-cone-shaped supporting face, and bolt connecting holes which are evenly distributed in the circumferential direction are formed in the ring face of the supporting outer ring. The clamping inner ring is of a split structure formed by axially cutting an annular combined piece, the outer wall of the annular combined piece is a circular-truncated-cone-shaped positioning face, and an annular connecting plate with a bolt passing hole is arranged on the outer edge of the rear end of the outer wall of the annular combined piece. Each component of the clamping inner ring is installed on the inner circle of the supporting outer ring through a bolt, so that the outer wall of the annular component of the clamping inner ring is in butt joint with the inner wall of the supporting outer ring through a circular truncated cone face, and radial clamping or opening of each component of the clamping inner ring is achieved by adjusting the screwing-in depth of the bolt. The positioning tool provided by the utility model solves the technical problem that the roller coating operation of the inner cavity of the special-shaped engine combustion chamber cannot be carried out on a traditional roller coating machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of positioning tool for the inner cavity tumbling of special combustion chamber, belong to combustion chamber tumbling technical field. BACKGROUND

[0002] The solid rocket booster shell inner heat insulation layer material is the important component of solid rocket booster, and is the inner surface of booster combustion chamber shell heat insulation, ablation-resistant material. At present, the heat insulation layer is mainly processed by tumbling process. The combustion chamber with inner cavity injected with coating is placed on the tumbling machine, and the tumbling machine rotates at high speed to drive the combustion chamber to rotate at high speed by friction transmission. The coating is uniformly attached to the inner surface of the combustion chamber under the action of centrifugal force. Due to the high-speed rotation of the combustion chamber, the airflow on the coating surface is accelerated, so that the coating is surface-dried and shaped within a certain time. After solidification treatment, a heat insulation layer with a certain thickness is formed.

[0003] With the development of the times, the engine is more and more advanced. With the continuous improvement of engine requirements, more and more special-shaped engines are developed. The special-shaped engine combustion chamber cannot carry out inner coating processing work on the traditional tumbling machine, which is an urgent problem to be solved. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the problem that the special-shaped engine combustion chamber cannot be used for inner cavity tumbling operation on the traditional tumbling machine, and provides a positioning tool for the inner cavity tumbling of special combustion chamber.

[0005] The utility model aims at solving the problem that the special-shaped engine combustion chamber cannot be used for inner cavity tumbling operation on the traditional tumbling machine, and provides a positioning tool for the inner cavity tumbling of special combustion chamber.

[0006] The utility model relates to a kind of positioning tool for the inner cavity tumbling of special combustion chamber, belong to combustion chamber tumbling technical field.

[0007] The outer wall of the supporting outer ring is a cylindrical side surface, the inner wall of the supporting outer ring is a circular truncated cone supporting surface, and a plurality of bolt connection holes are uniformly distributed on the annular surface of the supporting outer ring.

[0008] The clamping inner ring is a split structure obtained by axially cutting a ring-shaped assembly, the inner wall of the ring-shaped assembly is a cylindrical clamping surface, the outer wall of the ring-shaped assembly is a circular truncated cone positioning surface matched with the inner wall of the supporting outer ring, and a ring-shaped connecting plate is arranged at the outer end of the outer wall of the ring-shaped assembly. A bolt through hole is formed in the ring-shaped connecting plate of each split part of the clamping inner ring.

[0009] Each split part of the clamping inner ring is installed in the inner ring of the supporting outer ring by bolts, so that the outer wall of the ring-shaped assembly of the clamping inner ring is butted with the inner wall of the supporting outer ring through the circular truncated cone surface. By adjusting the screwing depth of the bolts, the radial clamping or opening of each split part of the clamping inner ring is realized.

[0010] Working process

[0011] Before the inner cavity of the special-shaped combustion chamber is rolled, two sets of positioning tools are installed on the cylindrical surfaces at two ends of the special-shaped combustion chamber, the depth of the bolts is adjusted, the radial clamping of each part of the clamping inner ring to the cylindrical surface of the special-shaped combustion chamber is realized, then the special-shaped combustion chamber provided with the two sets of positioning tools is placed between the two rotating rollers of the rolling machine, the outer cylindrical surface of the support outer ring supported by the two sets of positioning tools is in contact with the rotating rollers, the rolling machine is started, the combustion chamber is driven to rotate at high speed through friction transmission, and the rolling of the inner cavity of the special-shaped combustion chamber is completed.

[0012] Beneficial effects

[0013] The positioning tool is simple in structure and convenient to use, and solves the technical difficulty that the special-shaped engine combustion chamber cannot be subjected to inner cavity rolling operation on the traditional rolling machine. ACCURACY

[0014] Figure 1 It is a structure diagram of the positioning tool of the utility model;

[0015] Figure 2 It is a use state diagram of the positioning tool of the utility model;

[0016] In the drawing, 1 is a support outer ring, 2 is a clamping inner ring, and 3 is a bolt. DETAILED DESCRIPTION

[0017] The content of the utility model will be further described below in combination with the drawings and examples.

[0018] Examples

[0019] As Figure 1 shown, the positioning tool for the inner cavity rolling of the special-shaped combustion chamber of the utility model comprises a support outer ring 1, a clamping inner ring 2 and a bolt 3;

[0020] The outer wall of the support outer ring 1 is a cylindrical side surface, the inner wall of the support outer ring 1 is a circular truncated cone supporting surface, and a plurality of bolt connection holes are arranged on the ring surface of the support outer ring 1 in a circumferential uniform distribution mode;

[0021] The clamping inner ring 2 is a part structure cut axially from a ring-shaped assembly, the inner wall of the ring-shaped assembly is a cylindrical clamping surface, the outer wall of the ring-shaped assembly is a circular truncated cone positioning surface matched with the inner wall of the support outer ring 1, and a ring-shaped connecting plate is arranged at the outer edge of the rear end of the outer wall of the ring-shaped assembly; a bolt passing hole is arranged on the ring-shaped connecting plate of each part of the clamping inner ring 2;

[0022] Each part of the clamping inner ring 2 is installed on the inner ring of the supporting outer ring 1 through bolts 3, the outer wall of the annular assembly of the clamping inner ring 2 is butted against the inner wall of the supporting outer ring 1 through a circular truncated cone, and the radial clamping or opening of each part of the clamping inner ring 2 is realized by adjusting the screwing depth of the bolts 3.

[0023] Figure 2 The use state diagram of the positioning tool of the utility model is shown in the figure;

[0024] Before the inner cavity of the special-shaped combustion chamber is rolled and coated, two sets of positioning tools are installed on the cylindrical surfaces at two ends of the special-shaped combustion chamber respectively, the radial clamping of each part of the clamping inner ring 2 to the cylindrical surface of the special-shaped combustion chamber is realized by adjusting the screwing depth of the bolts 3, then the special-shaped combustion chamber provided with the two sets of positioning tools is placed between two rotating rollers of a rolling and coating machine, the outer cylindrical surface of the special-shaped combustion chamber supported by the two sets of positioning tools is brought into contact with the rotating rollers, after the rolling and coating machine is started, the special-shaped combustion chamber is driven to rotate at a high speed through friction transmission, and the rolling and coating of the inner cavity of the special-shaped combustion chamber is completed.

Claims

1. A positioning tool for roller coating of the inner cavity of a special-shaped combustion chamber, characterized by: It includes a supporting outer ring, a clamping inner ring and bolts; The outer wall of the supporting outer ring is a cylindrical side surface, the inner wall of the supporting outer ring is a truncated cone supporting surface, and the annular surface of the supporting outer ring is provided with bolt connection holes evenly distributed around the circumference; The inner clamping ring is a sub-component structure formed by axially cutting an annular component. The inner wall of the annular component is a cylindrical clamping surface, and the outer wall of the annular component is a truncated cone-shaped positioning surface that matches the inner wall of the supporting outer ring. An annular connecting plate is provided at the outer edge of the rear end of the outer wall of the annular component; bolt holes are respectively provided on the annular connecting plates of the sub-components of the inner clamping ring. The various components of the clamping inner ring are respectively installed on the inner ring of the supporting outer ring through bolts, so that the outer wall of the clamping inner ring annular component and the inner wall of the supporting outer ring are connected through the frustum. By adjusting the screw-in depth of the bolts, the radial clamping or opening of the various components of the clamping inner ring can be achieved.

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