A special tool for centrifugal casting of titanium alloy in a skull-congealing furnace

Abstract

The application discloses a special tool for titanium alloy centrifugal casting in a skull melting furnace, which comprises a skull melting furnace body and a turnover crucible arranged at the top of the inner side of the skull melting furnace body, both sides of the turnover crucible are connected with turnover shafts, the end of the turnover shafts penetrates to the outer side of the skull melting furnace body, the bottom of the inner side of the skull melting furnace body is installed with a centrifuge, the output end of the centrifuge is connected with an adjustable telescopic shaft, both inner walls of the two sides of the skull melting furnace body are fixed with two inner support seats, the inner side of the skull melting furnace body is provided with a fixed seat relative to the top of the adjustable telescopic shaft, and both ends of the fixed seat are provided with two integral end feet. The adjustable telescopic shaft and the adjustable fixed seat are designed, the problem that the centrifugal dynamic balance of titanium alloy centrifugal casting causes the deformation of the rotating shaft due to the excessive stress is solved, and the problem that the height of the centrifugal disc cannot be adjusted and cannot adapt to the height of various types of shells is solved.

Description

Technical Field

[0001] This invention belongs to the field of precision casting technology for titanium alloy investment casting, specifically relating to a special tooling for centrifugal casting of titanium alloys in a solidification furnace. Background Technology

[0002] In the casting process of titanium alloy investment casting, centrifugal casting is required in a solidification furnace. However, in the existing technology, the centrifugal disc is prone to dynamic imbalance during rotation due to inconsistent shell weights. Excessive stress on the rotating shaft over a long period of time can lead to deformation failure. In addition, the height of the centrifugal disc is not adjustable and cannot adapt to various shell heights. Therefore, this invention proposes a special tooling for centrifugal casting of titanium alloys in a solidification furnace. Summary of the Invention

[0003] The purpose of this invention is to provide a special tooling for centrifugal casting of titanium alloys in a solidification furnace, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a special tooling for centrifugal casting of titanium alloys in a solidification furnace, comprising a solidification furnace body and a tilting crucible disposed at the top inner side of the solidification furnace body. Tilting shafts are connected to both sides of the tilting crucible, with the ends of the tilting shafts extending to the outer side of the solidification furnace body. A centrifuge is installed at the bottom inner side of the solidification furnace body, and an adjustable telescopic shaft is connected to the output end of the centrifuge. Two inner support seats are fixed to the inner walls of both sides of the solidification furnace body. A fixed seat is provided on the inner side of the solidification furnace body relative to the top of the adjustable telescopic shaft. Two integral end feet are provided at both ends of the fixed seat, and the end feet are connected to the inner support seats, with an adjustment mechanism between them. A bearing seat is installed at the center of the top of the fixed seat, and a centrifuge disc is disposed above the bearing seat. The top end of the adjustable telescopic shaft extends to the top of the fixed seat and is connected to the centrifuge disc.

[0005] Preferably, the adjustable telescopic shaft includes a bottom shaft cylinder and a telescopic top shaft. The bottom shaft cylinder is connected to the top output end of the centrifuge, the top end of the telescopic top shaft is fixed to the bottom surface of the centrifuge disc, and the bottom end of the telescopic top shaft is movably located inside the bottom shaft cylinder.

[0006] Preferably, the adjustment mechanism includes a T-shaped inner slider fixed to the end surface of the end foot, and the surface of the inner support seat is provided with a T-shaped groove corresponding to the T-shaped inner slider. The T-shaped inner slider slides in the T-shaped groove. The adjustment mechanism also includes a U-shaped lever slidably disposed on the top surface of the end foot. A side locking rod is fixed to one side of the U-shaped lever. The inner wall of the T-shaped groove is provided with a plurality of limiting slots corresponding to the side locking rod. The end of the side locking rod passes through the T-shaped inner slider and is inserted into one of the limiting slots.

[0007] Preferably, the end surface of the end foot and the center of the T-shaped inner slider are both provided with through holes corresponding to the side locking rod. A guide block is fixed on the top surface of the side locking rod, and a guide groove corresponding to the guide block is provided on the upper inner wall of the through hole. The guide block slides in the guide groove.

[0008] Preferably, the adjustment mechanism further includes a limiting structure, which is disposed between the U-shaped lever and the end foot. The limiting structure includes an inner groove formed at the bottom of the U-shaped lever, a spring and a semi-circular telescopic block disposed in the inner groove, and two limiting slots corresponding to the semi-circular telescopic block formed on the top surface of the end foot. The semi-circular telescopic block is movably installed in the inner groove by the spring, and the bottom end of the semi-circular telescopic block passes through one of the limiting slots. The top end of the spring is fixed to the upper inner wall of the inner groove, and the bottom end of the spring is fixed to the top surface of the semi-circular telescopic block.

[0009] Compared with the prior art, the beneficial effects of the present invention are: the present invention is designed with an adjustable telescopic shaft and an adjustable fixed seat, which solves the problem of excessive force on the rotating shaft and deformation caused by centrifugal dynamic balance in titanium alloy centrifugal casting, and at the same time solves the problem that the height of the centrifugal disc is not adjustable and cannot adapt to the height of various types of shells. Attached Figure Description

[0010] Figure 1 This is a perspective view of the present invention;

[0011] Figure 2 This is a front view of the present invention;

[0012] Figure 3 For the present invention Figure 1 A magnified view of a portion of the central adjustment mechanism;

[0013] Figure 4 This is a cross-sectional view of the adjusting mechanism of the present invention;

[0014] Figure 5 For the present invention Figure 4 Enlarged view of the middle limiting structure;

[0015] In the diagram: 1. Solidification furnace body; 11. Inner support seat; 2. Fixed seat; 21. End foot; 3. Centrifuge; 4. Adjustable telescopic shaft; 41. Bottom shaft cylinder; 42. Telescopic top shaft; 5. Bearing seat; 6. Centrifuge disc; 7. Tilting crucible; 8. Adjustment mechanism; 81. T-shaped slide groove; 82. U-shaped lever; 83. Side locking rod; 84. T-shaped inner slider; 85. Limiting slot; 86. Guide block; 87. Guide slide groove; 88. Limiting structure; 881. Inner groove; 882. Spring; 883. Semi-circular telescopic locking block; 884. Limiting slot; 9. Tilting shaft. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example

[0018] Please see Figures 1 to 5 This embodiment of the invention provides a technical solution: a special tooling for centrifugal casting of titanium alloys in a solidification furnace, comprising a solidification furnace body 1 and a tilting crucible 7 disposed at the top inner side of the solidification furnace body 1. Tilting shafts 9 are connected to both sides of the tilting crucible 7, with the ends of the tilting shafts 9 extending to the outer side of the solidification furnace body 1. A centrifuge 3 is installed at the bottom inner side of the solidification furnace body 1, and an adjustable telescopic shaft 4 is connected to the output end of the centrifuge 3. Two inner support seats 11 are fixed to the inner walls of both sides of the solidification furnace body 1. A fixed seat 2 is provided on the inner side of the furnace body 1 relative to the top of the adjustable telescopic shaft 4. Two integrated end feet 21 are provided at both ends of the fixed seat 2. The end feet 21 are connected to the inner support seat 11, and an adjustment mechanism 8 is provided between them. A bearing seat 5 is installed at the top center of the fixed seat 2, and a centrifugal disc 6 is provided above the bearing seat 5. The top end of the adjustable telescopic shaft 4 extends through to the top of the fixed seat 2 and is connected to the centrifugal disc 6. Subsequently, the centrifuge 3 can drive the centrifugal disc 6 to rotate through the adjustable telescopic shaft 4 for centrifugal casting.

[0019] The adjustable telescopic shaft 4 includes a bottom shaft cylinder 41 and a telescopic top shaft 42. The bottom shaft cylinder 41 is connected to the top output end of the centrifuge 3, and the top end of the telescopic top shaft 42 is fixed to the bottom surface of the centrifuge disc 6. The bottom end of the telescopic top shaft 42 is movably located inside the bottom shaft cylinder 41.

[0020] The adjustment mechanism 8 includes a T-shaped inner slider 84 fixed to the end surface of the end foot 21. The surface of the inner support 11 has a T-shaped groove 81 corresponding to the T-shaped inner slider 84. The T-shaped inner slider 84 slides within the T-shaped groove 81. The adjustment mechanism 8 also includes a U-shaped lever 82 slidably disposed on the top surface of the end foot 21. A side lever 83 is fixed to one side of the U-shaped lever 82. Multiple limiting slots 85 corresponding to the side lever 83 are evenly distributed on the inner wall of the T-shaped groove 81. The end of the side lever 83 passes through the T-shaped inner slider 84 and inserts into one of the limiting slots 85, providing stable positioning of the fixed base 2 and the end foot 21 during daily use. If further adjustment is needed... When adjusting the height of the fixed seat 2, simply pull the U-shaped lever 82 to the side, causing the end of the side locking rod 83 to move out of the limiting slot 85, thus releasing the limitation on the fixed seat 2. At this time, move the fixed seat 2 up and down, causing the T-shaped inner slider 84 to slide within the T-shaped slide groove 81, thereby changing the height of the fixed seat 2 and the centrifugal disc 6. When the fixed seat 2 is adjusted up and down, the bottom end of the telescopic top shaft 42 will also slide within the bottom shaft cylinder 41. After the fixed seat 2 is adjusted to a suitable height, push the U-shaped lever 82 back again, allowing the end of the side locking rod 83 to be inserted into the limiting slot 85 in another position, thus limiting the T-shaped inner slider 84 again, achieving stable limitation after the height of the fixed seat 2 is adjusted.

[0021] The end surface of the end foot 21 and the center of the T-shaped inner slider 84 are both provided with through holes corresponding to the side locking rod 83, so that the side locking rod 83 can pass smoothly through. A guide block 86 is fixed on the top surface of the side locking rod 83. A guide groove 87 corresponding to the guide block 86 is provided on the upper inner wall of the through hole. The guide block 86 slides in the guide groove 87, which can further guide the side locking rod 83 and prevent the side locking rod 83 from slipping too much and falling off.

[0022] The adjustment mechanism 8 also includes a limiting structure 88, which is located between the U-shaped lever 82 and the end foot 21. This limiting structure 88 ensures the locking and limiting of the U-shaped lever 82 during daily use, guaranteeing the stability of the side latch 83's positioning of the T-shaped inner slider 84 and the end foot 21. The limiting structure 88 includes an inner groove 881 at the bottom of the U-shaped lever 82, within which a spring 882 and a semi-circular telescopic latch 883 are installed. Two limiting slots 884, corresponding to the semi-circular telescopic latch 883, are formed on the top surface of the end foot 21. The semi-circular telescopic latch 883 is controlled by the spring 882. The U-shaped lever 82 is installed in the inner groove 881, and the bottom end of the semi-circular telescopic lever 883 passes through one of the limiting slots 884, so that the U-shaped lever 82 can be engaged and limited. Later, the operator only needs to pull the U-shaped lever 82 to the side, so that the bottom end of the semi-circular telescopic lever 883 is gradually squeezed out of the limiting slot 884 and squeezed into the inner groove 881, so that the U-shaped lever 82 can be slid sideways until the bottom end of the semi-circular telescopic lever 883 can be engaged into the other limiting slot 884 under the push of the spring 882, thus realizing the engagement and limitation of the U-shaped lever 82 after sliding.

[0023] The top end of the spring 882 is fixed to the upper inner wall of the inner groove 881, and the bottom end of the spring 882 is fixed to the top surface of the semi-circular telescopic block 883 to ensure the installation stability of the spring 882.

[0024] Although embodiments of the invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special tooling for centrifugal casting of titanium alloys in a solidification furnace, comprising a solidification furnace body (1) and a tilting crucible (7) disposed at the top inner side of the solidification furnace body (1), wherein both sides of the tilting crucible (7) are connected to a tilting shaft (9), and the end of the tilting shaft (9) extends to the outside of the solidification furnace body (1), characterized in that: A centrifuge (3) is installed at the bottom inner side of the furnace body (1). An adjustable telescopic shaft (4) is connected to the output end of the centrifuge (3). Two inner support seats (11) are fixed on both sides of the inner wall of the furnace body (1). A fixed seat (2) is provided on the inner side of the furnace body (1) relative to the top of the adjustable telescopic shaft (4). Two integrated end feet (21) are provided at both ends of the fixed seat (2). The end feet (21) are connected to the inner support seats (11), and an adjustment mechanism (8) is provided between them. A bearing seat (5) is installed at the top center of the fixed seat (2), and a centrifuge disc (6) is provided above the bearing seat (5). The top end of the adjustable telescopic shaft (4) extends through to the top of the fixed seat (2) and is connected to the centrifuge disc (6).

2. The special tooling for centrifugal casting of titanium alloys in a solidification furnace according to claim 1, characterized in that: The adjustable telescopic shaft (4) includes a bottom shaft cylinder (41) and a telescopic top shaft (42). The bottom shaft cylinder (41) is connected to the top output end of the centrifuge (3). The top end of the telescopic top shaft (42) is fixed to the bottom surface of the centrifuge disc (6). The bottom end of the telescopic top shaft (42) is movably located inside the bottom shaft cylinder (41).

3. The special tooling for centrifugal casting of titanium alloys in a solidification furnace according to claim 1, characterized in that: The adjustment mechanism (8) includes a T-shaped inner slider (84) fixed to the end surface of the end foot (21). The surface of the inner support (11) is provided with a T-shaped groove (81) corresponding to the T-shaped inner slider (84). The T-shaped inner slider (84) slides in the T-shaped groove (81). The adjustment mechanism (8) also includes a U-shaped lever (82) slidably disposed on the top surface of the end foot (21). A side lever (83) is fixed on one side of the U-shaped lever (82). A plurality of limiting slots (85) corresponding to the side lever (83) are evenly provided on the inner wall of the T-shaped groove (81). The end of the side lever (83) passes through the T-shaped inner slider (84) and is inserted into one of the limiting slots (85).

4. The special tooling for centrifugal casting of titanium alloys in a solidification furnace according to claim 3, characterized in that: Both the end surface of the end foot (21) and the center of the T-shaped inner slider (84) are provided with through holes corresponding to the side latch (83).

5. The special tooling for centrifugal casting of titanium alloys in a solidification furnace according to claim 4, characterized in that: The top surface of the side clamp (83) is fixed with a guide block (86), and the upper inner wall of the perforation is provided with a guide groove (87) corresponding to the guide block (86), and the guide block (86) slides in the guide groove (87).

6. The special tooling for centrifugal casting of titanium alloys in a solidification furnace according to claim 3, characterized in that: The adjustment mechanism (8) further includes a limiting structure (88), which is disposed between the U-shaped lever (82) and the end foot (21).

7. The special tooling for centrifugal casting of titanium alloys in a solidification furnace according to claim 6, characterized in that: The limiting structure (88) includes an inner groove (881) at the bottom of the U-shaped lever (82). A spring (882) and a semi-circular telescopic block (883) are provided in the inner groove (881). Two limiting slots (884) corresponding to the semi-circular telescopic block (883) are provided on the top surface of the end foot (21). The semi-circular telescopic block (883) is movably installed in the inner groove (881) by the spring (882), and the bottom end of the semi-circular telescopic block (883) passes through one of the limiting slots (884).

8. The special tooling for centrifugal casting of titanium alloys in a solidification furnace according to claim 7, characterized in that: The top end of the spring (882) is fixed to the upper inner wall of the inner groove (881), and the bottom end of the spring (882) is fixed to the top surface of the semi-circular telescopic block (883).

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