Fixture for improving batch sawing precision of tantalum ingots

Abstract

The utility model relates to the technical field of tantalum ingot saw cutting clamps, in particular to a clamp capable of improving tantalum ingot batch saw cutting precision, which comprises a bottom bracket seat and an upper pressing seat, an end clamping assembly comprises an abutting disc and a clamping cylinder, a lower fixing plate is arranged on the top surface of a bottom plate in a left-right transverse sliding mode, and lower clamping rings are connected to symmetrical positions of the top end of the lower fixing plate. An upper fixing plate is connected to the peripheral side wall of the clamping cylinder, and upper clamping rings are connected to the symmetrical positions of the bottom end of the upper fixing plate. According to the tantalum ingot clamping device, concentric limiting is carried out at the position nearby saw cutting through the multiple fastening wedges, downward pressure and supporting force are provided for the tantalum ingot through the multiple upper clamping rings and the multiple lower clamping rings, stress interference of the long non-saw-cutting section of the tantalum ingot on the annular clamping position is avoided, the abutting disc and the clamping barrel carry out concentric limiting at the left end of the tantalum ingot, and therefore the tantalum ingot clamping device is convenient to use. And finally, longitudinal concentricity deviation of the tantalum ingot at the annular clamping position is avoided, then deviation of the perpendicularity of the cutting face of the tantalum block is avoided, and the cutting precision in the batch sawing process of the tantalum block is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tantalum ingot sawing fixtures, in particular to a fixture for improving the batch sawing accuracy of tantalum ingots. Background Art

[0002] The production of tantalum targets generally uses tantalum ingots as raw materials. After the cylindrical tantalum ingots are sawed into tantalum blocks of a certain size, their thickness is changed by pressure processing to obtain an approximately circular ingot material. The circular ingot is then processed to the required thickness and outer diameter by rolling to obtain the tantalum target blank. The blank is then placed in a melting furnace for electron beam melting treatment. Since the initial tantalum ingot is cylindrical, the position of the tantalum ingot needs to be fixed when it is cut into tantalum blocks of different sizes. The most important thing is to maintain concentricity. Therefore, a fixture is needed to clamp the tantalum ingot to meet the cutting production requirements and cut it into multiple tantalum blocks that meet the requirements.

[0003] In the process of cutting tantalum ingots, top-down sawing is often used. In order to obtain tantalum blocks that meet the size requirements, it is necessary to ensure the feed amount and the verticality of the sawing surface. The feed amount can be achieved by the feed cylinder. The main influencing factor of the verticality of the sawing surface is the concentricity of the tantalum ingot feeding and cutting process. In the process of batch sawing, each sawing section will generate a top-down sawing pressure. The clamping method of the sawing section ring clamping alone cannot completely offset the sawing pressure. In addition, due to batch cutting, the length of the tantalum ingot is often longer. The longer uncut section will cause stress interference on the ring clamping position due to the downward gravity, which will eventually cause the tantalum ingot to have a longitudinal concentricity offset at the ring clamping position, and then cause the verticality of the tantalum block cutting surface to offset. Later repair is required to make the verticality of the end face of the tantalum block meet the use requirements, which greatly reduces the cutting accuracy of the tantalum block.

[0004] Therefore, it is necessary to invent a fixture that improves the batch sawing accuracy of tantalum ingots to solve the above problems. Utility Model Content

[0005] In order to address the deficiencies in the prior art, the purpose of the utility model is to provide a clamp for improving the batch sawing accuracy of tantalum ingots, which solves the problem in the prior art that each sawing section will generate sawing pressure from top to bottom, and the sawing pressure cannot be completely offset by only the clamping method of the sawing section ring clamping. In addition, due to batch cutting, the length of the tantalum ingots is often longer, and the longer uncut sections will cause stress interference to the ring clamping position due to the downward gravity, which will eventually cause the tantalum ingot to have a longitudinal concentricity offset at the ring clamping position, and then cause the verticality of the cut surface of the tantalum block to be offset. Later repair is required to make the verticality of the end face of the tantalum block meet the use requirements, which greatly reduces the cutting accuracy of the tantalum block.

[0006] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0007] A clamp for improving the batch sawing accuracy of tantalum ingots, comprising a bottom support seat and an upper pressure seat longitudinally slidably arranged above the bottom support seat, a side wall of the bottom support seat and the upper pressure seat close to each other are provided with a semicircular slot for clamping a round tantalum ingot, a plurality of fastening wedges are connected to the positions of the bottom support seat and the right side wall of the upper pressure seat adapted to the semicircular slot, and the plurality of fastening wedges are in the same circumference, a bottom plate is connected to the bottom side of the left side wall of the bottom support seat, a side plate is connected to the left side of the bottom plate, and an end portion for feeding from left to right is provided in the center of the right side wall of the side plate for horizontal sliding left and right A clamping assembly, wherein the end clamping assembly includes a disc that can be abutted against the left end of the tantalum ingot and a clamping cylinder extending from the left end of the disc, and the inner circumferential side wall of the clamping cylinder abuts against the circumferential side wall of the tantalum ingot, a lower fixing plate is provided on the top surface of the bottom plate for horizontal sliding left and right, and lower clamping rings that can abut against the lower half of the circumferential side wall of the tantalum ingot are connected to symmetrical positions at the top end of the lower fixing plate, and an upper fixing plate is connected to the outer circumferential side wall of the clamping cylinder, and upper clamping rings that can abut against the upper half of the circumferential side wall of the tantalum ingot are connected to symmetrical positions at the bottom end of the upper fixing plate, and the multiple lower clamping rings and the multiple upper clamping rings are all on the same circumference.

[0008] As a preferred solution of the utility model, a slide rail is installed on the top of the base plate, and the bottom end of the lower fixed plate is connected to a slide seat that can slide horizontally left and right along the slide rail. Lower connecting columns are installed at symmetrical positions on the top of the lower fixed plate, and the two lower clamping rings are detachably connected to the corresponding lower connecting columns.

[0009] As a preferred solution of the utility model, the upper fixing plate is detachably connected to the outer peripheral side wall of the cartridge via a connecting frame at the top center, upper connecting columns are connected to symmetrical positions at the bottom end of the upper fixing plate, and the two upper retaining rings are detachably connected to corresponding upper connecting columns.

[0010] As a preferred solution of the utility model, the bottom sides of the two side walls of the bottom support seat are connected to a base, the top sides of the two side walls of the upper pressure seat are connected to a top seat, and a longitudinally retractable telescopic member is installed on the top of the base, and the top of the telescopic member is detachably connected to the bottom end of the top seat.

[0011] As a preferred solution of the utility model, the top of the bottom bracket is symmetrically connected to guide pillars, the upper pressing seat is longitudinally slidably sleeved between the two guide pillars, and a semicircular clamping pad is detachably embedded in the semicircular clamping groove;

[0012] When the upper pressing seat is in contact with the bottom supporting seat, the two semicircular clamping grooves are combined to form a circular space for clamping the tantalum ingot.

[0013] As a preferred solution of the utility model, a propulsion member that can be extended and retracted horizontally left and right is connected to the center of the right side wall of the side plate, and the right end of the propulsion member is detachably connected to the center of the left end of the abutment plate.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] In the utility model, the end clamping assembly moves horizontally from left to right, thereby completing the feeding of the tantalum ingot from left to right, and then forming a batch production process of sawing the tantalum ingot into tantalum blocks. During the sawing process, the two semicircular clamping grooves are enclosed to form a circular space by making the upper pressure seat contact with the bottom support seat, that is, a ring-shaped clamping position for clamping the tantalum ingot is formed. In this state, the upper pressure seat and the multiple fastening wedges on the right side wall of the bottom support seat are on the same circumference, so the circular tantalum ingot can be concentrically limited near the sawing part of the tantalum ingot. At the same time, according to the length of the unsawn section at the left end of the tantalum ingot, the lower fixing plate is moved to a position close to the center of gravity section, so that the two lower clamping rings are used to provide an upward supporting force for the unsawn section of the tantalum ingot, so as to avoid stress interference on the annular clamping position caused by the downward gravity of the longer uncut section. Involving, at the same time, the left end of the tantalum ingot is clamped by the end plate and the chuck to further ensure that the left end of the tantalum ingot remains concentric with the annular clamping position, and the two upper clamping rings can provide downward pressure to weaken the stress interference of the downward sawing force on the annular clamping position. That is to say, in the batch sawing process, a plurality of fastening wedges are used to perform concentric limiting at the position near the sawing, and a plurality of upper clamping rings and a plurality of lower clamping rings are used to provide downward pressure and supporting force to the tantalum ingot to avoid stress interference of the longer unsawn section of the tantalum ingot on the annular clamping position, and the counter plate and the chuck are used to perform concentric limiting at the left end of the tantalum ingot, ultimately avoiding the longitudinal concentricity deviation of the tantalum ingot at the annular clamping position, thereby avoiding the verticality deviation of the cutting surface of the tantalum block, and improving the cutting accuracy of the batch sawing process of the tantalum blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model from another viewing angle;

[0018] Figure 3 It is a schematic diagram of the planar front view structure of the utility model.

[0019] Description of reference numerals:

[0020] 1. Bottom support seat; 2. Upper pressure seat; 3. Bottom plate; 4. Side plate; 5. Pusher; 6. Abutment plate; 7. Clamp; 8. Slide rail; 9. Slide seat; 10. Lower fixing plate; 11. Lower connecting column; 12. Lower retaining ring; 13. Connecting frame; 14. Upper fixing plate; 15. Upper connecting column; 16. Upper retaining ring; 17. Semicircular slot; 18. Fastening wedge; 19. Base; 20. Top seat; 21. Telescopic member; 22. Guide column; 23. Semicircular clamp pad. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0022] The utility model provides Figure 1-3 A clamp for improving the batch sawing accuracy of tantalum ingots shown in the figure comprises a bottom support seat 1 and an upper pressure seat 2 longitudinally slidably arranged above the bottom support seat 1, a side wall of the bottom support seat 1 and the upper pressure seat 2 close to each other is provided with a semicircular clamping groove 17 for clamping the round tantalum ingot, a plurality of fastening wedges 18 are connected to the right side walls of the bottom support seat 1 and the upper pressure seat 2 at the position adapted to the semicircular clamping groove 17, and the plurality of fastening wedges 18 are in the same circumference, a bottom plate 3 is connected to the bottom side of the left side wall of the bottom support seat 1, a side plate 4 is connected to the left side of the bottom plate 3, an end clamping assembly for feeding from left to right is arranged in the center of the right side wall of the side plate 4 for sliding horizontally left and right, the end clamping assembly comprises a butt plate 6 which can be abutted against the left end of the tantalum ingot and a clamping cylinder 7 extending from the left end of the butt plate 6, and the inner peripheral side wall of the clamping cylinder 7 A lower fixing plate 10 is arranged on the top surface of the bottom plate 3 so as to slide horizontally left and right against the peripheral side wall of the tantalum ingot. The symmetrical positions of the top ends of the lower fixing plates 10 are connected with lower retaining rings 12 which can abut against the lower half of the peripheral side wall of the tantalum ingot. The peripheral side wall of the cartridge 7 is connected with an upper fixing plate 14. The symmetrical positions of the bottom ends of the upper fixing plates 14 are connected with upper retaining rings 16 which can abut against the upper half of the peripheral side wall of the tantalum ingot. The plurality of lower retaining rings 12 and the plurality of upper retaining rings 16 are all on the same circumference. According to the length of the unsawn section at the left end of the tantalum ingot, the lower fixing plate 10 is moved to a position close to the center of gravity section, so as to utilize the two lower retaining rings 12 to provide an upward supporting force to the unsawn section of the tantalum ingot, so as to avoid stress interference on the annular clamping position between the upper pressure seat 2 and the bottom support seat 1 due to the downward gravity of the longer uncut section.

[0023] A slide rail 8 is installed at the top of the bottom plate 3, and a slide seat 9 which can slide horizontally left and right along the slide rail 8 is connected to the bottom end of the lower fixed plate 10. Lower connecting columns 11 are installed at symmetrical positions on the top of the lower fixed plate 10, and two lower retaining rings 12 are detachably connected to the corresponding lower connecting columns 11 respectively. The slide seat 9 slides horizontally left and right along the slide rail 8, which can change the contact position of the two lower retaining rings 12 and the tantalum ingot. The lateral sliding position and distance are ultimately determined according to the center of gravity of the unsawed section of the tantalum ingot at the left end.

[0024] The upper fixing plate 14 is detachably connected to the outer peripheral side wall of the cartridge 7 through the connecting frame 13 at the top center, and upper connecting columns 15 are connected to symmetrical positions at the bottom end of the upper fixing plate 14. Two upper clamping rings 16 are detachably connected to the corresponding upper connecting columns 15, respectively. Downward pressure can be provided through the two upper clamping rings 16 to weaken the downward sawing force that causes stress interference on the annular clamping position between the upper pressure seat 2 and the bottom support seat 1.

[0025] The bottom sides of both side walls of the bottom support seat 1 are connected to a base 19, and the top sides of both side walls of the upper pressure seat 2 are connected to a top seat 20. A longitudinally retractable telescopic member 21 is installed on the top of the base 19. The top of the telescopic member 21 is detachably connected to the bottom of the top seat 20. The telescopic member 21 is longitudinally retracted to change the longitudinal position of the upper pressure seat 2, that is, to complete the switching of abutment, enclosure and separation of the two semicircular slots 17, that is, to complete the switching of annular clamping and release of the tantalum ingot.

[0026] The top of the bottom bracket 1 is symmetrically connected with guide posts 22, the upper pressing seat 2 is longitudinally slidably sleeved between the two guide posts 22, and a semicircular clamping pad 23 is detachably embedded in the semicircular clamping groove 17;

[0027] When the upper pressing seat 2 is in contact with the bottom supporting seat 1 , the two semicircular clamping grooves 17 enclose and form a circular space for clamping the tantalum ingot.

[0028] A pusher 5 that can be extended and retracted horizontally to the left and right is connected to the center of the right side wall of the side plate 4. The right end of the pusher 5 is detachably connected to the center of the left end of the abutment plate 6. The pusher 5 is extended and retracted horizontally to complete the left and right lateral movement of the end clamping assembly, that is, to push the tantalum ingot from left to right, thereby completing the batch production of cutting the tantalum ingot into tantalum blocks.

[0029] In the utility model, the end clamping assembly moves horizontally from left to right, thereby completing the feeding of the tantalum ingot from left to right, and then forming a batch production process of sawing the tantalum ingot into tantalum blocks. During the sawing process, the upper pressure seat 2 is brought into contact with the bottom support seat 1 to enclose the two semicircular clamping grooves 17 to form a circular space, that is, to form an annular clamping position for clamping the tantalum ingot. In this state, the upper pressure seat 2 and the multiple fastening wedges 18 on the right side wall of the bottom support seat 1 are on the same circumference, so that the circular tantalum ingot can be concentrically limited near the sawing part of the tantalum ingot. At the same time, according to the length of the unsawn section at the left end of the tantalum ingot, the lower fixing plate 10 is moved to a position close to the center of gravity section, so that the two lower clamping rings 12 are used to provide an upward support force for the unsawn section of the tantalum ingot, so as to avoid the stress interference of the longer uncut section on the annular clamping position due to the downward gravity. In the process of batch sawing, the left end of the tantalum ingot is clamped by the back plate 6 and the chuck 7, so as to further ensure that the left end of the tantalum ingot remains concentric with the annular clamping position, and the two upper clamping rings 16 can provide downward pressure to weaken the stress interference of the downward sawing force on the annular clamping position. That is to say, in the batch sawing process, a plurality of fastening wedges 18 are used to perform concentric limiting at the position near the sawing, and a plurality of upper clamping rings 16 and a plurality of lower clamping rings 12 are used to provide downward pressure and support force to the tantalum ingot, so as to avoid the stress interference of the longer unsawn section of the tantalum ingot on the annular clamping position, and the back plate 6 and the chuck 7 are used to perform concentric limiting at the left end of the tantalum ingot, so as to finally avoid the longitudinal concentricity deviation of the tantalum ingot at the annular clamping position, thereby avoiding the verticality deviation of the cutting surface of the tantalum block, and improving the cutting accuracy of the batch sawing process of the tantalum block.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fixture for improving the batch sawing accuracy of tantalum ingots, characterized by: The invention comprises a bottom support seat (1) and an upper pressure seat (2) longitudinally slidably arranged above the bottom support seat (1), wherein the side walls of the bottom support seat (1) and the upper pressure seat (2) close to each other are each provided with a semicircular clamping groove (17) for clamping a circular tantalum ingot, and the right side walls of the bottom support seat (1) and the upper pressure seat (2) are each connected with a plurality of fastening wedges (18) at positions adapted to the semicircular clamping groove (17), and the plurality of fastening wedges (18) are located on the same circumference, the bottom side of the left side wall of the bottom support seat (1) is connected with a bottom plate (3), the left side of the bottom plate (3) is connected with a side plate (4), and the center of the right side wall of the side plate (4) is provided with an end clamping component for feeding from left to right for horizontal sliding left and right, and the The end clamping assembly comprises a butt plate (6) which can be abutted against the left end of the tantalum ingot and a clamping sleeve (7) extending from the left end of the butt plate (6), and the inner peripheral side wall of the clamping sleeve (7) is abutted against the peripheral side wall of the tantalum ingot, and a lower fixing plate (10) is arranged on the top surface of the bottom plate (3) so as to slide horizontally left and right, and lower clamping rings (12) which can be abutted against the lower half of the peripheral side wall of the tantalum ingot are connected to the top symmetrical positions of the lower fixing plate (10), and the outer peripheral side wall of the clamping sleeve (7) is connected to an upper fixing plate (14), and upper clamping rings (16) which can be abutted against the upper half of the peripheral side wall of the tantalum ingot are connected to the bottom symmetrical positions of the upper fixing plate (14), and the plurality of lower clamping rings (12) and the plurality of upper clamping rings (16) are all on the same circumference.

2. A fixture for improving batch sawing accuracy of tantalum ingots according to claim 1, characterized in that: A slide rail (8) is installed at the top of the bottom plate (3); a slide seat (9) which can slide horizontally leftward and rightward along the slide rail (8) is connected to the bottom of the lower fixed plate (10); lower connecting columns (11) are installed at symmetrical positions on the top of the lower fixed plate (10); and the two lower clamping rings (12) are detachably connected to the corresponding lower connecting columns (11).

3. A fixture for improving batch sawing accuracy of tantalum ingots according to claim 1, characterized in that: The upper fixing plate (14) is detachably connected to the outer peripheral side wall of the cartridge (7) via a connecting frame (13) at the top center, upper connecting columns (15) are connected to symmetrical positions at the bottom end of the upper fixing plate (14), and the two upper clamping rings (16) are detachably connected to corresponding upper connecting columns (15).

4. The fixture for improving batch sawing accuracy of tantalum ingots according to claim 1 is characterized in that: The bottom sides of both side walls of the bottom support seat (1) are connected to a base (19), the top sides of both side walls of the upper pressure seat (2) are connected to a top seat (20), a telescopic member (21) that can be longitudinally extended is installed at the top end of the base (19), and the top end of the telescopic member (21) is detachably connected to the bottom end of the top seat (20).

5. The fixture for improving batch sawing accuracy of tantalum ingots according to claim 1, characterized in that: The top of the bottom support seat (1) is symmetrically connected to guide posts (22), the upper pressure seat (2) is longitudinally slidably sleeved between the two guide posts (22), and a semicircular clamping pad (23) is detachably embedded in the semicircular clamping groove (17); When the upper pressing seat (2) is in contact with the bottom supporting seat (1), the two semicircular clamping grooves (17) are combined to form a circular space for clamping the tantalum ingot.

6. The fixture for improving batch sawing accuracy of tantalum ingots according to claim 1, characterized in that: A propulsion member (5) that can be extended and retracted horizontally to the left and right is connected to the center of the right side wall of the side plate (4), and the right end of the propulsion member (5) is detachably connected to the center of the left end of the abutment plate (6).

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