Chuck assembly for sintering tantalum bar

Abstract

The utility model provides a chuck assembly for tantalum strip sintering processing, which comprises a bearing assembly component, a fixed clamping component, a wedge fastening component, a movable clamping component, a clamping guide component and a clamping fastening component, and the chuck assembly forms a stable tantalum strip clamping space through the close fit of the fixed clamping component and the movable clamping component, so that the tantalum strip can be stably clamped. The fixed clamping component is firmly fixed in the bearing and assembling component through the wedge fastening component, the movable clamping component is locked and positioned through the clamping and fastening component, stability and reliability in the clamping process are guaranteed, the movable clamping component is installed in the bearing and assembling component through the deflection structure and can flexibly deflect in the bearing and assembling component, and therefore the clamping effect is improved. The clamping fastening component can be used for accurately locking and positioning the clamping state of the movable clamping component so as to adapt to tantalum strips of different shapes and sizes, and the clamping accuracy and consistency are guaranteed.

Description

Technical Field

[0001] The utility model relates to tantalum bar processing equipment, in particular to a chuck assembly used for sintering tantalum bars. Background Art

[0002] Due to its high density, hardness, and excellent chemical stability, sintered tantalum rods are particularly suitable for manufacturing equipment and parts operating in corrosive environments. For example, in chemical reaction equipment, sintered tantalum rods are used to create coatings, valves, and other components to improve the equipment's corrosion and wear resistance. Tantalum rod sintering is a complex, multi-step process primarily used to produce high-purity, high-performance tantalum products. Tantalum sintering typically utilizes methods such as vacuum arc melting or electron beam melting. These methods melt the raw materials at high temperatures under a high vacuum or inert gas atmosphere, yielding high-purity tantalum metal. During the smelting process, high-purity tantalum pellets (or tantalum wire) are placed in a furnace and melted by the high temperatures of an arc or electron beam. Simultaneously, gases and volatile impurities released during the melting process are removed by vacuum pumps, achieving purification. The molten tantalum metal solidifies upon cooling, forming sintered tantalum rods.

[0003] Existing tantalum bar chucks have a high rate of bar dropout during the sintering process, resulting in increased sintering costs and reduced yield. This high bar dropout rate compromises product yield. Typically, the bar needs to be cut and re-sintered after it has dropped, wasting energy, causing the molybdenum chuck and copper wedge to melt, damaging the electrode, and wasting labor costs during re-sintering.

[0004] Therefore, it is necessary to optimize the structure of the chuck used for sintering the tantalum bar to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of the utility model is to provide a chuck assembly for sintering tantalum bars.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

[0007] A chuck assembly for sintering tantalum bars, comprising:

[0008] A load-bearing assembly component having an assembly space therein;

[0009] A fixed clamping member, which is installed in the load-bearing assembly member and is adapted to the shape of the tantalum bar;

[0010] A wedging and fastening member is installed in the load-bearing assembly member and cooperates with the fixed clamping member to fix the position of the fixed clamping member in the load-bearing assembly member;

[0011] A movable clamping member is installed in the load-bearing assembly member through a deflection structure. The movable clamping member can deflect in the load-bearing assembly member and cooperate with the fixed clamping member to form a tantalum bar clamping space between the fixed clamping member and the movable clamping member. The tantalum bar is clamped and positioned by the movable clamping member and the fixed clamping member;

[0012] A clamping guide member is installed in the load-bearing assembly member and cooperates with the movable clamping member to guide the deflection process of the movable clamping member;

[0013] The clamping and tightening component is installed on the clamping guide component and cooperates with the load-bearing assembly component and the movable clamping component. The clamping and tightening component locks and positions the clamping state of the movable clamping component.

[0014] The load-bearing assembly components include:

[0015] The bearing base has an assembly recess on the top of the bearing base, which is axially recessed toward the inside of the bearing base, and a tight-fitting inclined wall at its radial outer end and a matching straight wall at its radial inner end, so that the axial cross-section of the assembly recess forms a right-angled trapezoidal structure that is wide at the top and narrow at the bottom. A guide cavity is provided in the middle of the bearing base, which extends radially along the bearing base, and a clamping guide member is installed in the guide cavity. A deflection opening is also provided on the top of the bearing base, which is axially recessed toward the inside of the bearing base and is connected to the guide cavity. A support ridge is provided on the inner wall of the deflection opening, which extends circumferentially along the deflection opening and protrudes radially toward the inside of the deflection opening.

[0016] The fixed clamping member comprises:

[0017] The fixing clamp is a straight structure and extends along the axial direction of the bearing base. The lower section extends into the assembly recess and abuts against the matching straight wall, and the upper section extends above the bearing base.

[0018] In one embodiment of the present invention, the fixing clamp is formed by processing molybdenum material.

[0019] The wedging and tightening member comprises:

[0020] The tightening wedge has an axial cross-section of a right-angled trapezoidal structure that is wide at the top and narrow at the bottom, and extends into the assembly recess. Its radial inner end abuts against the fixed clamp, and its radial outer end abuts against the tightening inclined wall. The tightening wedge is embedded in the assembly recess by knocking, applying lateral pressure to the fixed clamp.

[0021] In one embodiment of the present invention, the tightening wedge is formed by copper material, and its structure is wide at the top and narrow at the bottom. The tightening wedge and the fixed clamp both apply gravity downward, so that the friction resistance between the fixed clamp and the load-bearing base is greater. At the same time, the knocking force during the assembly process is much greater than the pulling force, so that the lateral pressure on the tightening wedge is greater, further increasing the friction resistance between the fixed clamp and the load-bearing base.

[0022] The movable clamping member comprises:

[0023] The movable chuck is a straight structure and extends along the axial direction of the bearing base. The middle section is located in the deflection opening and abuts against the support ridge. It can be deflected in the deflection opening through the support ridge. The lower section extends into the guide cavity and cooperates with the clamping guide member. The upper section extends above the bearing base and forms a tantalum bar clamping space between the movable chuck and the fixed chuck. When the upper section of the movable chuck deflects inward, the tantalum bar is clamped between the fixed chuck and the movable chuck.

[0024] In one embodiment of the present invention, the movable clamp is formed by processing molybdenum material.

[0025] The clamping guide member comprises:

[0026] The guide end shaft is installed in the guide cavity and extends radially along the bearing base. Its end extends into the lower section of the movable chuck. When the movable chuck deflects, the guide end shaft guides the movement of its lower section.

[0027] The clamping and fastening components include:

[0028] A fixing spring is installed on the guide end shaft and can be extended and retracted along the axial direction of the guide end shaft;

[0029] The locking ring is sleeved on the guide end shaft and is located between the locking spring and the movable clamp. The locking spring drives the lower section of the movable clamp to deflect outward and the upper section to deflect inward through the locking ring, clamping the tantalum bar between the fixed clamp and the movable clamp.

[0030] In this embodiment, the retaining ring is made of zirconium oxide, which has the characteristics of high temperature resistance, corrosion resistance, and strong bending resistance, and has good insulation properties, and fully meets the on-site process requirements.

[0031] The advantages of the present invention are:

[0032] The clamping head assembly forms a stable tantalum bar clamping space through the close cooperation of the fixed clamping member and the movable clamping member. The fixed clamping member is firmly fixed in the load-bearing assembly member by the wedge-fastening fastening member, and the movable clamping member is locked and positioned by the clamping and tightening member, ensuring stability and reliability during the clamping process. The movable clamping member is installed in the load-bearing assembly member through the deflection structure and can flexibly deflect in the load-bearing assembly member to adapt to tantalum bars of different shapes and sizes. The clamping and tightening member can accurately lock and position the clamping state of the movable clamping member, ensuring the accuracy and consistency of the clamping. The assembly recess, guide cavity and deflection through-port in the load-bearing assembly member are reasonably designed, providing good space and conditions for the installation and cooperation of various components. The mutual cooperation of the clamping guide member and the clamping and tightening member makes the deflection and clamping process of the movable clamping member more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The utility model is a schematic structural diagram of a chuck assembly for sintering tantalum bars. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] like Figure 1As shown, the chuck assembly for tantalum bar sintering processing proposed by the present invention includes a load-bearing assembly component, a fixed clamping component, a wedge-fastening component, a movable clamping component, a clamping guide component and a clamping and fixing component. The load-bearing assembly component has an assembly space. The fixed clamping component is installed in the load-bearing assembly component and is adapted to the shape of the tantalum bar. The wedge-fastening component is installed in the load-bearing assembly component and cooperates with the fixed clamping component. The position of the fixed clamping component in the load-bearing assembly component is fixed by the wedge-fastening component. The movable clamping component is installed on the load-bearing assembly component through a deflection structure. In the embodiment, it can deflect in the load-bearing assembly component and cooperate with the fixed clamping component to form a tantalum bar clamping space between the fixed clamping component and the movable clamping component, and the tantalum bar is clamped and positioned by the movable clamping component and the fixed clamping component. The clamping guide component is installed in the load-bearing assembly component and cooperates with the movable clamping component, and the deflection process of the movable clamping component is guided by the clamping guide component. The clamping and tightening component is installed on the clamping guide component and cooperates with the load-bearing assembly component and the movable clamping component, and the clamping and tightening component locks and positions the clamping state of the movable clamping component.

[0036] In this embodiment, the bearing assembly component includes a bearing base 100, and an assembly recess is provided on the top of the bearing base. The assembly recess is axially recessed toward the inside of the bearing base, and its radial outer end has a tight inclined wall, and its radial inner end has a matching straight wall, so that the axial cross-section of the assembly recess forms a right-angled trapezoidal structure that is wide at the top and narrow at the bottom. A guide cavity is provided in the middle of the bearing base, and the guide cavity extends radially along the bearing base. The clamping guide component is installed in the guide cavity. A deflection opening is also provided on the top of the bearing base, and the deflection opening is axially recessed toward the inside of the bearing base and is connected to the guide cavity. A support ridge is provided on the inner wall of the deflection opening, and the support ridge extends circumferentially along the deflection opening and protrudes radially toward the inside of the deflection opening.

[0037] The fixing clamping member includes a fixing clamp 200, which is a straight structure and extends along the axial direction of the supporting base. Its lower section extends into the assembly recess and abuts against the matching straight wall, and its upper section extends above the supporting base.

[0038] In this embodiment, the fixing clamp is formed by processing molybdenum material.

[0039] The wedge-fastening component includes a tightening wedge block 300. The axial cross-section of the tightening wedge block is a right-angled trapezoidal structure that is wide at the top and narrow at the bottom. It extends into the assembly recess, and its radial inner end abuts against the fixed clamp, and its radial outer end abuts against the tightening inclined wall. The tightening wedge block is embedded in the assembly recess by knocking, applying lateral pressure to the fixed clamp.

[0040] In this embodiment, the tightening wedge is formed by copper material, and its structure is wide at the top and narrow at the bottom. The tightening wedge and the fixed clamp both apply gravity downward, which makes the friction resistance between the fixed clamp and the load-bearing base greater. At the same time, the knocking force during the assembly process is much greater than the pulling force, which makes the tightening wedge subject to greater lateral pressure, further increasing the friction resistance between the fixed clamp and the load-bearing base.

[0041] The movable clamping member includes a movable clamping head 400, which is a straight structure and extends along the axial direction of the supporting base. The middle section is located in the deflection opening and abuts against the support ridge. It can be deflected in the deflection opening through the support ridge. The lower section extends into the guide cavity and cooperates with the clamping guide member. The upper section extends above the supporting base and forms a tantalum bar clamping space between the movable clamping head and the fixed clamping head. When the upper section of the movable clamping head deflects inward, the tantalum bar A is clamped between the fixed clamping head and the movable clamping head.

[0042] In this embodiment, the movable chuck is formed by processing molybdenum material.

[0043] The clamping guide component includes a guide end shaft 500, which is installed in the guide cavity and extends radially along the supporting base. Its end extends into the lower section of the movable clamp. When the movable clamp is deflected, the guide end shaft guides the movement process of its lower section.

[0044] The clamping and tightening component includes a tightening spring 610 and a tightening retaining ring 620. The tightening spring is installed on the guide end shaft and can be extended and retracted along the axial direction of the guide end shaft. The tightening retaining ring is sleeved on the guide end shaft and is located between the tightening spring and the movable clamp. The tightening spring drives the lower section of the movable clamp to deflect outward and the upper section to deflect inward through the tightening retaining ring, thereby clamping the tantalum bar between the fixed clamp and the movable clamp.

[0045] In this embodiment, the retaining ring is made of zirconium oxide, which has the characteristics of high temperature resistance, corrosion resistance, and strong bending resistance, and has good insulation properties, and fully meets the on-site process requirements.

[0046] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", and "right" indicate an orientation or positional relationship, they should be understood as being based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

Claims

1. A chuck assembly for sintering tantalum bars, characterized in that: include: A load-bearing assembly component having an assembly space therein; A fixed clamping member, which is installed in the load-bearing assembly member and is adapted to the shape of the tantalum bar; A wedging and fastening member is installed in the load-bearing assembly member and cooperates with the fixed clamping member to fix the position of the fixed clamping member in the load-bearing assembly member; A movable clamping member is installed in the load-bearing assembly member through a deflection structure. The movable clamping member can deflect in the load-bearing assembly member and cooperate with the fixed clamping member to form a tantalum bar clamping space between the fixed clamping member and the movable clamping member. The tantalum bar is clamped and positioned by the movable clamping member and the fixed clamping member; A clamping guide member is installed in the load-bearing assembly member and cooperates with the movable clamping member to guide the deflection process of the movable clamping member; The clamping and tightening component is installed on the clamping guide component and cooperates with the load-bearing assembly component and the movable clamping component. The clamping and tightening component locks and positions the clamping state of the movable clamping component.

2. A chuck assembly for tantalum bar sintering according to claim 1, characterized in that: The load-bearing assembly components include: The bearing base has an assembly recess on the top of the bearing base, which is axially recessed toward the inside of the bearing base, and a tight-fitting inclined wall at its radial outer end and a matching straight wall at its radial inner end, so that the axial cross-section of the assembly recess forms a right-angled trapezoidal structure that is wide at the top and narrow at the bottom. A guide cavity is provided in the middle of the bearing base, which extends radially along the bearing base, and a clamping guide member is installed in the guide cavity. A deflection opening is also provided on the top of the bearing base, which is axially recessed toward the inside of the bearing base and is connected to the guide cavity. A support ridge is provided on the inner wall of the deflection opening, which extends circumferentially along the deflection opening and protrudes radially toward the inside of the deflection opening.

3. The chuck assembly for sintering tantalum bars according to claim 2, characterized in that: The fixed clamping member comprises: The fixing clamp is a straight structure and extends along the axial direction of the bearing base. The lower section extends into the assembly recess and abuts against the matching straight wall, and the upper section extends above the bearing base.

4. A chuck assembly for sintering tantalum bars according to claim 3, characterized in that: The wedging and tightening member comprises: The tightening wedge has an axial section of a right-angled trapezoidal structure that is wide at the top and narrow at the bottom, and extends into the assembly recess. Its radial inner end abuts against the fixed clamp, and its radial outer end abuts against the tightening inclined wall. The tightening wedge is embedded in the assembly recess by knocking.

5. The chuck assembly for sintering tantalum bars according to claim 3, characterized in that: The movable clamping member comprises: The movable chuck has a straight structure and extends along the axial direction of the bearing base. Its middle section is located in the deflection opening and abuts against the support ridge. It can be deflected in the deflection opening through the support ridge. Its lower section extends into the guide cavity and cooperates with the clamping guide member. Its upper section extends above the bearing base and forms a tantalum bar clamping space between the movable chuck and the fixed chuck.

6. The chuck assembly for sintering tantalum bars according to claim 5, characterized in that: The clamping guide member comprises: The guide end shaft is installed in the guide cavity and extends along the radial direction of the bearing base, with the end thereof extending into the interior of the lower section of the movable clamp.

7. The chuck assembly for sintering tantalum bars according to claim 6, characterized in that: The clamping and fastening components include: A fixing spring is installed on the guide end shaft and can be extended and retracted along the axial direction of the guide end shaft; The fixing retaining ring is sleeved on the guide end shaft and is located between the fixing spring and the movable clamp.

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