Flexible connection target point auxiliary tool for butt joint correction of engine shell

Abstract

The utility model discloses a flexible connection target point auxiliary tool for butt joint correction of an engine shell, and relates to the field of butt joint and correction of solid rocket engine shells, the flexible connection target point auxiliary tool comprises a target pasting block, a sleeve, a connecting rod and a fixing seat, one side of the fixing seat is provided with a cylindrical pin, and the cylindrical pin is matched with a radial hole of the engine shell; the connecting rod is connected between the fixing base and the sleeve, the axis of the connecting rod is perpendicular to the axis of the cylindrical pin, and the target pasting block is rotationally connected to the sleeve; the main body structure is used for pasting a target point, and the target point is used for being identified by a binocular vision measuring instrument. The roundness correction of the front and rear butt-joint end faces of the engine shell is achieved at the same time.

Description

TECHNICAL FIELD

[0001] The utility model is used for solid rocket engine shell butt joint and orthopaedic field, belongs to the development of measuring auxiliary tooling design, is applicable to engine shell butt joint measurement process technical requirement. BACKGROUND

[0002] Solid rocket engine is internally provided with flammable and explosive propellant. At present, the solid rocket engine adopts horizontal butt joint mode, and the engine shell is deformed due to the influence of its own gravity, so that the engine shell cannot be normally butt jointed. Therefore, the roundness of the butt joint end face of the engine shell needs to be orthopaedic and butt jointed. At present, the engine shell comprises a front section and a rear section, a plurality of radial holes are formed in the front section and the rear section, and when the engine shell is orthopaedic and butt jointed, the outer circle of the rear section needs to be inserted into the inner circle of the front section, and the radial holes of the front section and the radial holes of the rear section need to be aligned. However, the front and rear butt joint end faces cannot be orthopaedic and butt jointed at the same time, the production efficiency is low, the equipment is inconvenient to set up, and the target point recognition range is small. CONTENT OF THE UTILITY MODEL

[0003] The technical problem solved by the present application is to overcome the shortcomings of the prior art and provide a flexible connection target point auxiliary tooling for engine shell butt joint orthopaedics. For the roundness orthopaedics of the butt joint end face of the engine shell, the tooling can rotate and adjust the angle of the target point, so that it can be recognized by the horizontal butt joint system in a wide range and at multiple angles, and the roundness orthopaedics of the front and rear butt joint end faces of the engine shell can be realized at the same time.

[0004] By using the software function module in the horizontal butt joint system, the target point can be monitored in real time, the roundness of the butt joint end face and the coordinate system during the butt joint process can be monitored in real time, the man-machine real-time feedback interaction can be realized, and the work efficiency can be improved.

[0005] The technical scheme provided by the present application is as follows:

[0006] The flexible connection target point auxiliary tooling for engine shell butt joint orthopaedics comprises a target sticking block, a sleeve, a connecting rod and a fixing seat, one side of the fixing seat is provided with a cylindrical pin, the cylindrical pin is matched with the radial hole of the engine shell, the connecting rod is connected between the fixing seat and the sleeve, the axis of the connecting rod is perpendicular to the axis of the cylindrical pin, and the target sticking block is rotationally connected to the sleeve. The main body structure is used for sticking the target point, and the target point is used for being recognized by a binocular vision measuring instrument.

[0007] The diameter of the cylindrical pin is greater than the diameter of the radial hole of the end portion of the engine shell, and the diameter of the cylindrical pin is 0.1-0.2mm smaller than the diameter of the radial hole.

[0008] The target sticking block comprises a main body structure and a cylindrical rod, one end of the cylindrical rod is fixedly connected with the main body structure, and the other end is rotationally connected to the sleeve.

[0009] The sleeve is provided with a coaxial through hole and a threaded hole, the through hole is located at one end of the threaded hole, the inner diameter of the through hole is smaller than the inner diameter of the threaded hole; the end of the cylindrical rod away from the main body structure is provided with a snap ring, the outer diameter of the snap ring is greater than the diameter of the cylindrical rod, the outer diameter of the cylindrical rod is matched with the through hole of the sleeve, the outer diameter of the snap ring is greater than the inner diameter of the through hole, and the snap ring is located in the threaded hole of the sleeve.

[0010] The sleeve is provided with a chamfer at one end of the threaded hole away from the through hole.

[0011] One end of the connecting rod is in threaded connection with the fixing seat, and the other end is in threaded connection with the threaded hole of the sleeve, and the connecting rod abuts against the end of the cylindrical rod.

[0012] The hardness of the cylindrical pin is less than the hardness of the engine shell.

[0013] In summary, the present application at least includes the following beneficial technical effects:

[0014] 1. The target point is identified in a larger range

[0015] Since the target paste block 1 and the fixing seat 4 are flexibly connected, the target paste block 1 can rotate relative to the fixing seat 4, so when the target point is collected, the collection angle can be adjusted by rotating the target paste block, and the target point can be collected in a larger range.

[0016] 2. The front and rear shells can simultaneously collect data in real time

[0017] Since the cylindrical pin on the fixing seat 4 is connected with the through hole on the butt joint end face of the shell, and the target paste block 1 can rotate, when the shell is butt jointed, the target points on the front and rear end faces of the shell can face the same direction, the target points on the front and rear ends of the shell are collected in real time at the same time, and the production efficiency is improved.

[0018] 3. The measuring process is safer

[0019] Since the target point data of the front and rear shells can be collected in real time at the same time, the butt joint equipment can be installed at a position farther away from the engine shell for butt joint, and the production process is safer. DETAILED DESCRIPTION

[0020] Figure 1 is a structural schematic view of the utility model, Figure 1 the right view of Figure 1 the left view is a side view.

[0021] Figure 2 is a structural schematic view of the target paste block 1, wherein, Figure 2 a is an elevation view, Figure 2 b is a plan view, Figure 2c is a side view.

[0022] Figure 3 is a structural schematic diagram of the sleeve 2, Figure 3 a is a sectional view, Figure 3 b is a top view.

[0023] Figure 4 is a structural schematic diagram of the connecting rod 3, Figure 4 a is a front view, Figure 4 b is a top view.

[0024] Figure 5 is a structural schematic diagram of the fixing base 4, Figure 5 a is a front view, Figure 5 b is a top view, Figure 5 c is a side view.

[0025] Brief Description of the Drawings: 1, target paste block; 11, main structure; 12, cylindrical rod; 2, sleeve; 3, connecting rod; 4, fixing base; 41, cylindrical pin. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the drawings, and make the further detailed description to the embodiment disclosed by the utility model.

[0027] The embodiment of the application discloses a roundness correction measurement auxiliary tool, as shown in the left and right views of Figure 1 The structure comprises a target paste block 1, a sleeve 2, a connecting rod 3 and a fixing base 4.

[0028] As shown in 5a, 5b and 5c of Figure 5 , wherein the fixing base 4 is taken as the basis, one side of the fixing base 4 is provided with a cylindrical pin 41, the diameter of the cylindrical pin is greater than the diameter of the radial hole of the end part of the engine shell, and the diameter of the cylindrical pin is 0.1-0.2mm smaller than the diameter of the radial hole, and the hardness of the cylindrical pin is smaller than the hardness of the engine shell, so that after the cylindrical pin is inserted into the radial hole, the relative position of the cylindrical pin and the engine shell is stable.

[0029] As shown in 4a and 4b of Figure 4 , one end of the connecting rod 3 is threadedly connected with the fixing base 4, and the other end is threadedly connected with the sleeve 2. The axis of the connecting rod 3 is perpendicular to the axis of the cylindrical pin.

[0030] As shown in 3a and 3b of Figure 3 , the sleeve 2 is provided with a coaxial through hole and a threaded hole, the through hole is located at one end of the threaded hole, the inner diameter of the through hole is smaller than the inner diameter of the threaded hole, and the end part of the connecting rod 3 is threadedly connected in the threaded hole of the sleeve 2. The sleeve 2 is provided with a chamfer at the end of the threaded hole away from the through hole, facilitating the insertion of the connecting rod 3.

[0031] As Figure 2 The target pasting block 1 includes a main body structure 11 and a cylindrical rod 12, the main body structure is a rectangular metal block, the cylindrical rod is a metal cylindrical rod, the back of the rectangular metal block is connected with the cylindrical rod, the end of the cylindrical rod away from the main body structure is provided with a snap ring, the outer diameter of the snap ring is greater than the diameter of the metal cylindrical rod, the outer diameter of the cylindrical rod matches with the through hole of the sleeve 2, the outer diameter of the snap ring is greater than the inner diameter of the through hole, and the snap ring is located in the threaded hole of the sleeve 2. The installation sequence is that firstly, one end of the cylindrical rod is inserted into the threaded hole of the sleeve 2 and passes out of the through hole until the snap ring is located in the threaded hole, and then the end of the cylindrical rod passing out of the through hole is welded and fixed between the main body structure. The main body structure is used for pasting target points, the target points are used for being recognized by the binocular vision measuring instrument, so that the binocular vision measuring instrument can determine the accurate position of the radial hole connected with the auxiliary tool according to the position of the target points, and then real-time monitoring of the end face of the engine shell in the roundness correction process is realized.

[0032] After the target pasting block 1 is connected with the sleeve 2, the two ends of the connecting rod 3 are respectively screwed with the fixing seat 4 and the sleeve 2.

[0033] The fixing seat 4 and the target pasting block 1 are flexibly connected through the connecting rod 3 and the sleeve 2, the target pasting block 1 can rotate relative to the fixing seat 4, so that the target points can be recognized towards the field of view of the binocular vision measuring instrument, for example, the top and bottom positions of the engine shell need to rotate the target pasting block 1 to the direction of the field of view of the binocular vision measuring instrument, otherwise the top and bottom positions of the engine shell are difficult to be monitored in real time. The cylindrical pin on the fixing seat 4 can be inserted into the radial hole of the butt joint end face of the engine shell, so that the butt joint end face of the engine shell is bound with the target points.

[0034] When the target pasting block 1 is rotated, if the connection between the target pasting block 1 and the sleeve 2 is relatively loose, the relative rotation may occur, the target pasting block 1 can be directly controlled to stop rotating at a target angle, then the connecting rod 3 is rotated, so that the connecting rod 3 gradually penetrates into the sleeve 2, and the snap ring of the target pasting block 1 is pressed tightly, and at this time the target pasting block 1 is fixed.

[0035] The utility model adopts the method of indirect measurement and flexible connection, solves the real-time measurement of the butt joint end face roundness of the engine shell and the large range collection problem of the target points, and the specific universality.

[0036] Work flow:

[0037] 1. The target pasting block 1 is connected with the head of the connecting rod 3, is fixed through the sleeve 2, and the relative rotation of the target pasting block 1 and the connecting rod 3 can be realized.

[0038] 2. The tail of the connecting rod 3 is screwed with the fixing seat 4.

[0039] 3. The target point is affixed to the target affix block 1 with the target point facing the orthopedic docking system.

[0040] 4. The cylindrical pin of the fixation block 4 is inserted into the hole of the housing docking end face.

[0041] The content not described in detail in the specification of the present application is the known technology of those skilled in the art.

[0042] The present application is described in detail above in conjunction with specific embodiments and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that various equivalent substitutions, modifications or improvements can be made to the technical solutions and embodiments of the present application without departing from the spirit and scope of the present application, and these all fall within the scope of the present application. The scope of protection of the present application is subject to the appended claims.

Claims

1. A target point auxiliary tooling for flexible connection of engine housing docking and straightening, characterized in that: The device includes a target pasting block (1), a sleeve (2), a connecting rod (3), and a fixing seat (4). A cylindrical pin is provided on one side of the fixing seat (4), which engages with the radial hole of the engine housing. The connecting rod (3) is connected between the fixing seat (4) and the sleeve (2), and the axis of the connecting rod (3) is perpendicular to the axis of the cylindrical pin. The target pasting block (1) is rotatably connected to the sleeve (2). The main structure is used for pasting the target points, and the target points are used to be identified by the binocular vision measuring instrument.

2. The target point auxiliary tooling for flexible connection of engine housing docking and straightening according to claim 1, characterized in that: The diameter of the cylindrical pin is larger than the diameter of the radial hole at the end of the engine housing, and the diameter of the cylindrical pin is 0.1-0.2 mm smaller than the diameter of the radial hole.

3. The target point auxiliary tooling for flexible connection of engine housing docking and straightening according to claim 1, characterized in that: The target adhesive block (1) includes a main structure and a cylindrical rod. One end of the cylindrical rod is fixedly connected to the main structure, and the other end is rotatably connected to the sleeve (2).

4. The target point auxiliary tooling for flexible connection of engine housing docking and straightening according to claim 3, characterized in that: The sleeve (2) has a coaxial through hole and a threaded hole. The through hole is located at one end of the threaded hole, and the inner diameter of the through hole is smaller than the inner diameter of the threaded hole. A retaining ring is provided at the end of the cylindrical rod away from the main structure. The outer diameter of the retaining ring is larger than the diameter of the cylindrical rod. The outer diameter of the cylindrical rod matches the through hole of the sleeve (2). The outer diameter of the retaining ring is larger than the inner diameter of the through hole. The retaining ring is located in the threaded hole of the sleeve (2).

5. The target point auxiliary tooling for flexible connection of engine housing docking and straightening according to claim 4, characterized in that: The sleeve (2) has a chamfer at the end of the threaded hole away from the through hole.

6. The target point auxiliary tooling for flexible connection of engine housing docking and straightening according to claim 4, characterized in that: One end of the connecting rod (3) is threaded to the fixed seat (4), and the other end is threaded to the threaded hole of the sleeve (2). The connecting rod (3) presses against the end of the cylindrical rod.

7. The auxiliary tooling for target points in flexible connection for engine housing docking and straightening according to claim 1, characterized in that: The hardness of the cylindrical pin is less than that of the engine housing.

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