A hot straightening tool for high strength steel housing tempering treatment

Abstract

The utility model discloses a kind of hot shape correction tooling for high-strength steel shell tempering treatment, including substrate and several portal located above substrate, the center line of the bottom surface of portal has coincides with the surface of substrate, the top of the portal is equipped with the pressing plate of control shell roundness, the pressing plate is pressure bonded with the top of shell placed horizontally.Effective control straightness and roundness of shell in tempering process, prevent thermal deformation, improve subsequent assembly accuracy, form effective sealing;Stress is evenly distributed in shell simultaneously, prevent stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of high-strength steel shell processing technology, specifically to a heat-shaping tooling for tempering treatment of high-strength steel shells. Background Technology

[0002] In the aerospace field, high-strength steel has high yield strength and good fracture toughness, can survive for a long time under high pressure, and has high impact toughness, which can withstand the huge impact force during launch. It can be widely used in the preparation of engine casings and combustion chamber casings.

[0003] Currently, engine casings and combustion chamber shells manufactured using high-strength steel typically require heat treatment to optimize their performance. Conventional heat treatment methods include annealing, quenching, and tempering. During tempering, the engine casing and combustion chamber shell are prone to deformation, causing the straightness and roundness of the casing to fail to meet design requirements, reducing assembly accuracy, and preventing the formation of an effective seal, leading to high-temperature and high-pressure gas leakage; stress concentration can also occur, resulting in safety hazards.

[0004] Therefore, this application is submitted. Utility Model Content

[0005] The purpose of this invention is to provide a heat-forming fixture for tempering high-strength steel shells. This fixture effectively controls the straightness and roundness of the high-strength steel shells during the tempering process, reduces the deformation rate, and provides conditions for subsequent assembly accuracy.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution: A heat-forming fixture for tempering high-strength steel shells includes a base plate and several masts located above the base plate. The bottom surface of the masts has a center line that coincides with the surface of the base plate. The top of the masts is provided with a pressure plate for controlling the roundness of the shell. The pressure plate is pressed against the top of the shell, which is placed laterally.

[0007] Furthermore, a fixing block and a pressure block that contact the top of the housing are respectively provided at the top and bottom of the pressure plate. The top surface of the fixing block is fixedly connected to the screw that penetrates the top of the gantry, and a limiting block that contacts the side of the fixing block is provided.

[0008] Furthermore, the top of the gantry is provided with a stepped groove for mounting a limiting block, and the limiting block extends along the inside of the stepped groove to form a protrusion that abuts against the side of the fixing block.

[0009] Furthermore, the stepped groove includes a first groove for assembling a fixing block and a protrusion, and a second groove for assembling a limiting block, wherein the diameter of the first groove is smaller than the diameter of the second groove.

[0010] Furthermore, a fixed seat for supporting the outer wall of the housing is fixedly provided at the bottom of the gantry.

[0011] Furthermore, the top of the fixing base is provided with an arc-shaped groove, and the housing is located in the groove.

[0012] Furthermore, the bottom plate of the gantry extends horizontally outward at both ends to form connecting ears, which are detachably connected to the bottom plate.

[0013] Furthermore, elongated grooves are provided on both sides of the substrate, and the elongated grooves on both sides are symmetrically arranged with respect to the center line of the short side of the substrate. The connecting ear is located above the elongated groove and passes through the screw hole of the bolt.

[0014] Furthermore, the elongated grooves located on the same side of the substrate are on the same horizontal line.

[0015] Furthermore, the tooling is made of steel.

[0016] The beneficial effects of this utility model are: This invention features a plurality of gantry frames positioned above a substrate. Each gantry frame contains a fixed seat with an arc-shaped groove that contacts the bottom of the housing. An adjustable pressure plate is located at the top of the gantry frame. The pressure plate presses against the top of the housing, limiting its position within the gantry frame and controlling its roundness, ensuring the housing remains straight. This effectively controls the straightness and roundness of the housing during tempering, preventing thermal deformation, improving subsequent assembly accuracy, and creating an effective seal. Simultaneously, it ensures stress is evenly distributed within the housing, preventing stress concentration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the gantry of this utility model; Figure 4 This is a schematic diagram of the assembly structure of the fixing block and the limiting block of this utility model within the gantry.

[0018] Reference numerals: 1-substrate, 10-elongated groove, 2-gate, 20-connecting lug, 21-screw hole, 22-step groove, 220-first groove, 221-second groove, 3-fixed seat, 30-groove, 4-pressure plate, 40-pressure block, 41-fixing block, 5-screw, 6-limiting block, 60-protrusion. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1 Embodiment 1 of this utility model is a heat-forming fixture for tempering treatment of high-strength steel shells. It is characterized by including a base plate 1 and a plurality of gantry 2 located above the base plate 1. The bottom surface of the gantry 2 has a center line that coincides with the surface of the base plate 1. The top of the gantry 2 is provided with a pressure plate 4 for controlling the roundness of the shell. The pressure plate 4 is pressed against the top of the shell placed horizontally.

[0023] Reference Figure 1 and Figure 2 This invention primarily involves setting several masts 2 above the substrate 1. Each mast 2 contains a pressure plate 4 for limiting the housing position. The pressure plate 4 presses downwards against the top of the horizontally placed high-strength housing, controlling the roundness requirements of the housing during tempering. Furthermore, in this heat-forming fixture, multiple masts 2 are aligned along the same horizontal centerline above the substrate 1, ensuring the housing is placed within the masts 2. This effectively controls the straightness during tempering above the substrate 1, preventing thermal deformation and ensuring that the straightness and roundness meet the housing's design requirements, improving subsequent assembly accuracy and achieving an effective seal. Simultaneously, it ensures stress is evenly distributed within the housing, preventing stress concentration.

[0024] The high-strength steel shell placed horizontally is limited by the pressure plate 4. The top and bottom of the pressure plate 4 are respectively provided with a fixing block 41 and a pressure block 40 that contacts the top of the shell. The top surface of the fixing block 41 is fixedly connected to the screw 5 that penetrates the top of the gantry 2. The side of the fixing block 41 is provided with a limiting block 6 that contacts it.

[0025] Specifically, refer to Figure 2 As shown, fixing blocks 41 and pressing blocks 40 are respectively provided on the upper and lower sides of the pressure plate 4. The fixing block 41 is fixedly connected to the screw 5, which is threaded into a pre-set hole at the top of the gantry 2. The fixing block 41 drives the movement of the pressure plate 4 and pressing blocks 40, adjusting the pressing height of the pressing blocks 40 to accommodate the heat-forming of various shell specifications. In addition, a limiting block 6 is provided on the side of the fixing block 41, located inside the gantry 2. The limiting block 6 abuts against the fixing block 41 to further reinforce the position of the fixing block 41 in the gantry 2, ultimately strengthening the fixation of the shell.

[0026] To enhance the limiting effect of the limiting block 6 on the fixing block 41, the top of the gantry 2 is provided with a stepped groove 22 for mounting the limiting block 6, and the limiting block 6 extends along the inside of the stepped groove 22 to form a protrusion 60 that abuts against the side of the fixing block 41. (Refer to...) Figure 3 and Figure 4 The stepped groove 22 includes a first groove 220 for assembling the fixing block 41 and the protrusion 60, and a second groove 221 for assembling the limiting block 6. The diameter of the first groove 220 is smaller than the diameter of the second groove 221. The first groove 220 is used to assemble the fixing block 41 and the protrusion 60, and the second groove 221 is used to assemble the limiting block 6. The limiting block 6 and the protrusion 60 are integrally connected by bolts, so that the protrusion 60 abuts against the side of the fixing block 41 within the first groove 220 for fixation. The height of the fixing block 41 can be set according to actual adjustment needs; this is existing technology and will not be elaborated here. The height of the fixing block 41 is greater than the height of the protrusion 60, which facilitates the protrusion 60 in limiting the fixation after adjustment at the same horizontal position, improving the utilization rate of the device.

[0027] Example 2 This embodiment 2 is implemented based on embodiment 1, wherein a fixing seat 3 for supporting the outer wall of the housing is fixedly installed at the bottom of the gantry 2. The top of the fixing seat 3 is provided with an arc-shaped groove 30, and the housing is located within the groove 30. (Refer to...) Figure 2 and Figure 3 The bottom of the gantry 2 can be connected to the fixed seat 3 via a locating pin, fixing the fixed seat 3 in the bottom of the gantry 2. The fixed seat 3 has an arc-shaped groove 30 at its top, providing conditions for assembly on the outer circumference of the bottom of the housing. Simultaneously, within the gantry 2, the arc-shaped groove 30 can be used to support cylindrical housings of various sizes, and cooperates with the pressing action of its top pressure block 40 to ensure that both the top and bottom of the housing are limited, preventing displacement during tempering and providing conditions for controlling straightness and roundness.

[0028] Furthermore, the bottom plate of the gantry 2 extends horizontally outward at both ends to form connecting ears 20, which are detachably connected to the bottom plate. The connecting ears 20 provide installation conditions for connecting the gantry 2 to the base plate 1. The base plate 1 has elongated slots 10 on both sides, symmetrically arranged around the center line of the short side of the base plate 1. The connecting ears 20 are located above the elongated slots 10 and pass through bolt holes 21.

[0029] Specifically, bolts are used to secure the connection through the screw holes 21 in the connecting lugs 20 and through the elongated slots 10. Simultaneously, the elongated slots 10 on both sides of the short side of the substrate 1 are symmetrically arranged, with the elongated slots 10 on the same side of the substrate 1 aligned at the same horizontal line. This arrangement of the elongated slots 10 on both sides of the substrate 1 ensures that several masts 2 are evenly distributed above the substrate 1, keeping the housing in a straight position within the masts 2, thereby controlling the straightness of the housing during the tempering process and meeting the requirements.

[0030] Furthermore, the length of the elongated groove 10 can be set according to the actual situation, and can be short or long. In the longer elongated groove 10, the position of the gantry 2 can be adjusted within it. After the position is fixed by bolts, the gantry 2 will not move after being fixed due to its own structural weight and the locking force of the bolts. This is existing technology and will not be described in detail here.

[0031] Meanwhile, the tooling is made of steel. Steel has high strength, ductility, and toughness, and can withstand the tempering treatment of high-strength steel shells. At the same time, the various parts of the tooling are easy to assemble and replace, reducing the production cost of the tooling.

[0032] The working principle of this utility model is as follows: Before tempering, the runout and straightness of the quenched high-strength shell are tested on the testing platform, and the high points are marked on the shell; then the shell is placed horizontally in the arc-shaped groove 30 of the fixing base 3, and the position of the pressure block 40 is adjusted by manually rotating the screw 5 so that the pressure block 40 presses against the top of the shell. The protrusion 60 is reinforced by abutting against the side of the fixing block 41 at the position of the adjusting bolt. The straightness of the shell is controlled by the base plate 1. Then, the roundness of the shell is controlled by the pressure block 40 on the hot straightening fixture hitting the high point of the arc surface of the shell; the shell is tempered together with the hot straightening fixture, which effectively controls the straightness and roundness of the high-strength steel shell during the tempering process, reduces the deformation rate, and provides conditions for subsequent assembly accuracy.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A heat-shaping fixture for tempering high-strength steel shells, characterized in that, It includes a substrate (1) and several gantry (2) located above the substrate (1). The bottom surface of the gantry (2) has a center line that coincides with the surface of the substrate (1). The top of the gantry (2) is provided with a pressure plate (4) for controlling the roundness of the housing. The pressure plate (4) is pressed against the top of the housing placed horizontally.

2. The heat-forming fixture for tempering high-strength steel shells according to claim 1, characterized in that, The top and bottom of the pressure plate (4) are respectively provided with a fixing block (41) and a pressure block (40) that contacts the top of the housing. The top surface of the fixing block (41) is fixedly connected to the screw (5) that passes through the top of the gantry (2). The side of the fixing block (41) is provided with a limiting block (6) that contacts it.

3. The heat-forming fixture for tempering high-strength steel shells according to claim 2, characterized in that, The top of the gantry (2) is provided with a step groove (22) for mounting a limiting block (6), and the limiting block (6) extends along the inside of the step groove (22) to form a protrusion (60) that abuts against the side of the fixing block (41).

4. A heat-forming fixture for tempering high-strength steel shells according to claim 3, characterized in that, The stepped groove (22) includes a first groove (220) for assembling a fixing block (41) and a protrusion (60), and a second groove (221) for assembling a limiting block (6). The groove diameter of the first groove (220) is smaller than the groove diameter of the second groove (221).

5. A heat-forming fixture for tempering high-strength steel shells according to claim 3, characterized in that, The bottom of the gantry (2) is fixed with a mounting base (3) that supports the outer wall of the housing.

6. A heat-forming fixture for tempering high-strength steel shells according to claim 5, characterized in that, The top of the fixing base (3) is provided with an arc-shaped groove (30), and the housing is located in the groove (30).

7. A heat-forming fixture for tempering high-strength steel shells according to claim 5, characterized in that, The bottom plate of the gantry (2) extends horizontally outward at both ends to form connecting ears (20), which are detachably connected to the bottom plate.

8. A heat-forming fixture for tempering high-strength steel shells according to claim 7, characterized in that, The substrate (1) is provided with elongated grooves (10) on both sides. The elongated grooves (10) on both sides are symmetrically arranged with respect to the center line of the short side of the substrate (1). The connecting ear (20) is located above the elongated groove (10) and passes through the screw hole (21) of the bolt.

9. A heat-forming fixture for tempering high-strength steel shells according to claim 7, characterized in that, The elongated groove (10) located on the same side of the substrate (1) is on the same horizontal line.

10. A heat-forming fixture for tempering high-strength steel shells according to claim 7, characterized in that, The tooling is made of steel.

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