An annealing apparatus for correcting a casting

Abstract

The application discloses a kind of annealing equipment for casting correction, including the clamping assembly for being fixed to titanium alloy piece and the offset mechanism for being offset detection to workpiece and the deviation rectification mechanism for being reverse force to workpiece correction, annealing furnace is equipped with the sliding in-out slide rail matched with offset mechanism, in-out slide rail is installed in annealing furnace interior, deviation rectification mechanism is installed on the transmission rod position of annealing furnace corresponding offset mechanism, clamping assembly is installed on the upper end of offset mechanism.The application is rotated or transversely moved when workpiece is offset, and the extrusion between inner offset block and transmission rod can drive transmission rod and outer transmission rod to feedback, so as to detect the offset amount by external electronic components, and correct the reverse by correction oil cylinder, without detecting and correcting again after complete annealing, improve work efficiency and the stability of workpiece annealing.

Description

Technical Field

[0001] This invention relates to the field of titanium alloy casting processing, and in particular to an annealing device for straightening castings. Background Technology

[0002] Titanium and titanium alloys possess excellent properties such as low density, high specific strength, corrosion resistance, small coefficient of linear expansion, and good biocompatibility, making them indispensable structural materials in industries such as aerospace, ocean shipping, chemical engineering, metallurgy, and medical and health care. Initially, titanium and titanium alloy parts used in industry were deformed parts. However, with the increase in their usage and the expansion of their applications, deformation revealed drawbacks such as high machining requirements, low material utilization, and high production costs. Therefore, casting technology was developed. Titanium casting is a relatively economical and easily achievable near-forming process. Titanium and titanium alloys exhibit high chemical reactivity in the molten state, requiring chemical reactions with various commonly used refractory materials. Melting and casting are very difficult, necessitating specialized molding materials and processes, as well as specialized melting and casting equipment.

[0003] When some rod-shaped or large titanium alloy castings require annealing, due to the uncertainty of the internal crystal structure, the crystal forming speed may occasionally be uneven, causing stress concentration in some areas. This can lead to deformation of the castings during annealing, and such deformation can only be detected after annealing and requires correction. Summary of the Invention

[0004] The purpose of this invention is to provide an annealing device for straightening castings in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: An annealing device for straightening castings includes a clamping assembly for fixing titanium alloy parts, an offset mechanism for detecting workpiece offset, and a correction mechanism for applying reverse force to the workpiece for correction. An inlet and outlet slide rail that slides in conjunction with the offset mechanism is installed inside the annealing furnace. The correction mechanism is installed on the annealing furnace at the position of the transmission rod corresponding to the offset mechanism. The clamping assembly is installed on the upper end of the offset mechanism. The offset mechanism includes a fixed base, with a clamping assembly fixed at the upper end of the fixed base via a connecting seat, and an inner offset block connected at the lower end of the fixed base. The fixed base and the inner offset block are integrally formed. The width of the inner offset block is smaller than that of the fixed base. The inner offset block has an inverted convex structure, and the bottom of the inner offset block is connected to a sliding plate via a rotating shaft. Inside the sliding plate, a transmission rod is slidably connected to the front and rear ends of the inner offset block. The transmission rod is connected to the sliding plate via a reset component. The correction mechanism includes an outer transmission rod, which is installed at the corresponding transmission rod position. A correction cylinder is installed at the end of the outer transmission rod away from the transmission rod. A copper strip is installed on the part of the outer transmission rod that is exposed to the annealing furnace, and a sliding rheostat is fitted at the upper end of the copper strip.

[0006] Preferably, the transmission rod has a clearance fit with an inner offset block, and the transmission rod and the slide plate reset component are reset springs.

[0007] With this configuration, the transmission rod expands after being heated, and the clearance fit ensures that it will not be unable to slide inside the inner offset block due to the expansion.

[0008] Preferably, the sliding rheostat includes a fixed end and a sliding end. The fixed end is connected to one end of a copper strip by a screw, and the sliding end is fixedly connected to the housing outside the correction cylinder.

[0009] With this setup, the sliding rheostat is used to detect the sliding distance of the external transmission rod, thereby determining the workpiece's offset.

[0010] Preferably, a temperature sensor is installed on the outside of the annealing furnace.

[0011] Preferably, the slide plate is provided with a rectangular groove that matches the rotating shaft, and the rotating shaft slides and rotates to connect with the rectangular groove.

[0012] With this setup, the inner offset block shifts position under the action of the workpiece offset force, causing it to flip or slide on the slide plate and generate displacement, which is then fed back through the transmission rod and the outer transmission rod.

[0013] Preferably, the fixing base and the inner offset block are coated with heat-insulating material.

[0014] Preferably, a displacement gap is provided between the bottom surfaces on both sides of the fixed base and the sliding plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: When the workpiece is offset, the inner offset block rotates or moves laterally. The pressure between the inner offset block and the transmission rod causes the transmission rod and the outer transmission rod to give feedback. The offset is then detected by external electronic components, and the correction cylinder is used for reverse correction. There is no need to detect and correct again after full annealing, which improves work efficiency and the stability of the workpiece forming during annealing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an annealing device for straightening castings according to the present invention; Figure 2This is a schematic diagram of the inlet and outlet slide rail structure of an annealing device for casting straightening according to the present invention; Figure 3 This is a schematic diagram of the offset mechanism structure of an annealing device for casting straightening according to the present invention; Figure 4 This is a partial sectional view of the offset mechanism of an annealing device for straightening castings according to the present invention; Figure 5 This is a detailed drawing of the correction mechanism of an annealing device for straightening castings according to the present invention.

[0018] The annotations in the attached figures are explained as follows: 1. Annealing furnace; 2. Temperature sensor; 3. Inlet / outlet slide rail; 4. Offset mechanism; 5. Clamping assembly; 6. Correction mechanism; 41. Fixed base; 42. Connecting base; 43. Inner offset block; 44. Slide plate; 45. Rotating shaft; 46. Transmission rod; 61. Outer transmission rod; 62. Correction cylinder; 63. Copper strip; 64. Sliding rheostat. Detailed Implementation

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-5As shown, an annealing device for straightening castings includes a clamping assembly 5 for fixing titanium alloy parts, an offset mechanism 4 for detecting workpiece offset, and a correction mechanism 6 for applying reverse force to correct the workpiece. An inlet and outlet slide rail 3 that slides in conjunction with the offset mechanism 4 is installed inside the annealing furnace 1. The inlet and outlet slide rail 3 is installed inside the annealing furnace 1. The correction mechanism 6 is installed on the annealing furnace 1 at the position corresponding to the transmission rod 46 of the offset mechanism 4. The clamping assembly 5 is installed on the upper end of the offset mechanism 4. The offset mechanism 4 includes a fixed base 41. The upper end of the fixed base 41 is fixed with a clamping assembly 5 via a connecting base 42. The lower end of the fixed base 41 is connected to an inner offset block 43. The fixed base 41 and the inner offset block 43 are integrally formed. The width of the inner offset block 43 is smaller than that of the fixed base 41. The inner offset block 43 has an inverted convex structure. The bottom of the inner offset block 43 is connected to a slide plate 44 via a rotating shaft 45. Inside the slide plate 44, a transmission rod 46 is slidably connected to the front and rear ends of the inner offset block 43. The transmission rod 46 is connected to the slide plate 44 via a reset component. The correction mechanism 6 includes an outer transmission rod 61, which is installed at the position of the corresponding transmission rod 46. A correction cylinder 62 is installed at the end of the outer transmission rod 61 away from the transmission rod 46. A copper strip 63 is installed on the part of the outer transmission rod 61 that is exposed in the annealing furnace 1. A sliding rheostat 64 is fitted at the upper end of the copper strip 63.

[0022] Preferably, the transmission rod 46 is fitted with an inner offset block 43 with clearance, and the reset component of the transmission rod 46 and the slide plate 44 is a reset spring.

[0023] With this configuration, the transmission rod 46 expands after being heated, and the clearance fit ensures that it will not be unable to slide inside the inner offset block 43 due to the expansion.

[0024] Preferably, the sliding rheostat 64 includes a fixed end and a sliding end. The fixed end is connected to one end of the copper strip 63 by a screw, and the sliding end is fixedly connected to the housing outside the correction cylinder 62.

[0025] With this configuration, the sliding rheostat 64 is used to detect the sliding distance of the outer transmission rod 61, thereby determining the offset of the workpiece.

[0026] Preferably, a temperature sensor 2 is installed on the outside of the annealing furnace 1.

[0027] Preferably, the slide plate 44 is provided with a rectangular groove that matches the rotating shaft 45, and the rotating shaft 45 slides and rotates to connect with the rectangular groove.

[0028] With this configuration, the inner offset block 43 is positioned under the action of the workpiece offset force, thereby causing it to flip or slide on the slide plate 44 and generate displacement, which is then fed back through the transmission rod 46 and the outer transmission rod 61.

[0029] Preferably, the fixing base 41 and the inner offset block 43 are coated with heat-insulating material.

[0030] Preferably, a displacement gap is provided between the bottom surfaces on both sides of the fixed base 41 and the sliding plate 44.

[0031] Working principle: The titanium alloy workpiece to be annealed is clamped on the clamping assembly 5, pushed into the annealing furnace 1, and then the furnace door of the annealing furnace 1 is closed to heat it up and then cool it down for annealing. During the annealing stage, the workpiece may occasionally twist or bend due to stress concentration in the internal crystals during heating and cooling. At this time, the clamping assembly 5 synchronizes the deformation of the workpiece to the connecting seat 42 and the fixed seat 41, and then to the inner offset block 43. When bending occurs, the fixed seat 41 will drive the inner offset block 43 to move laterally in the groove of the slide plate 44, and exert lateral pressure on the front or rear transmission rod 46. When twisting occurs, the connecting seat 42 and the fixed seat 41 will drive the inner offset block 43 to flip on the slide plate 44 through the rotating shaft 45. At this time, the plane flipping of the inner offset block 43 will press the transmission rod 46, which will drive the transmission rod 46 to move laterally. The lateral movement of the transmission rod 46 will drive the outer transmission rod 61 to move laterally, and the copper strip 63 on the outer transmission rod 61 will also be driven. The sliding rheostat 64 will detect and judge the sliding of the copper strip 63, i.e., the outer transmission rod 61, to determine the offset of the workpiece. The correction cylinder 62 will be activated to push back, thereby applying reverse pressure to correct the workpiece during the annealing process and improving the forming efficiency.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An annealing device for straightening castings, characterized in that: It includes a clamping assembly (5) for fixing titanium alloy parts, an offset mechanism (4) for detecting workpiece offset, and a correction mechanism (6) for applying reverse force to correct the workpiece. An inlet and outlet slide rail (3) that slides in conjunction with the offset mechanism (4) is installed inside the annealing furnace (1). The inlet and outlet slide rail (3) is installed inside the annealing furnace (1). The correction mechanism (6) is installed on the annealing furnace (1) at the position of the transmission rod (46) corresponding to the offset mechanism (4). The clamping assembly (5) is installed on the upper end of the offset mechanism (4). The offset mechanism (4) includes a fixed base (41), the upper end of the fixed base (41) is fixed to the clamping assembly (5) through a connecting base (42), the lower end of the fixed base (41) is connected to an inner offset block (43), the fixed base (41) and the inner offset block (43) are integrally formed, the width of the inner offset block (43) is smaller than that of the fixed base (41), the inner offset block (43) has an inverted convex structure, and the bottom of the inner offset block (43) is connected to the slide plate (44) through a rotating shaft (45). The transmission rod (46) is slidably connected inside the slide plate (44) at the front and rear ends of the inner offset block (43), and the transmission rod (46) is connected to the slide plate (44) through a reset member. The correction mechanism (6) includes an outer transmission rod (61), which is installed at a position corresponding to the transmission rod (46). A correction cylinder (62) is installed at the end of the outer transmission rod (61) away from the transmission rod (46). A copper strip (63) is installed on the part of the outer transmission rod (61) that is exposed from the annealing furnace (1). A sliding rheostat (64) is fitted at the upper end of the copper strip (63). The sliding rheostat (64) includes a fixed end and a sliding end. The fixed end is connected to one end of the copper strip (63) by a screw, and the sliding end is fixedly connected to the housing outside the correction cylinder (62).

2. The annealing equipment for straightening castings according to claim 1, characterized in that: The transmission rod (46) is fitted with the inner offset block (43) with a clearance, and the transmission rod (46) and the reset component of the slide plate (44) are reset springs.

3. The annealing equipment for straightening castings according to claim 1, characterized in that: A temperature sensor (2) is installed on the outside of the annealing furnace (1).

4. The annealing equipment for straightening castings according to claim 1, characterized in that: The slide plate (44) is provided with a rectangular groove that matches the rotating shaft (45), and the rotating shaft (45) slides and rotates to connect with the rectangular groove.

5. The annealing equipment for straightening castings according to claim 1, characterized in that: The fixed base (41) and the inner offset block (43) are coated with heat-insulating material.

6. The annealing equipment for straightening castings according to claim 1, characterized in that: A displacement gap is provided between the bottom surfaces on both sides of the fixed base (41) and the sliding plate (44).

Images