Long-distance manual aligning cutting clamp for isotope irradiation target

Abstract

The invention discloses an isotope irradiation target long-distance manual self-aligning cutting clamp which comprises a supporting seat, a movable sliding table, a bubble type gradienter, two clamping blocks, an adjusting screw, a fixing screw, a locking screw rod and the like, the movable sliding table is of a delta-like structural form, the structure is compact, the size is small, and the weight is light; the transfer in the limited space of the hot chamber is facilitated; by rotating the adjusting screw and the locking screw rod, the levelness of the clamp can be adjusted, and the clamp can be clamped and loosened; the center position of the clamp is adjusted by rotating the fixing screw rod; the structure facilitates operation of the master-slave mechanical arm, the whole operation process is simple, and high practicability is achieved.

Description

Technical Field

[0001] The invention relates to the field of post-irradiation inspection, and in particular to a long-distance manual centering and cutting fixture for isotope irradiation target pieces. Background Art

[0002] After the isotope target is irradiated in the pile, it is necessary to cut the irradiated target in the hot chamber to take out the isotope irradiation product inside the target. Since the chuck of the existing milling machine is very old, the irradiated target becomes eccentric each time it is clamped on the chuck, resulting in an uneven cut surface and burrs on the irradiated target, which affects the removal of the isotope irradiation product inside the target. Summary of the invention

[0003] The invention provides a long-distance manual centering and cutting fixture for isotope irradiation targets, which can be used in radioactive places and has the advantages of convenient operation, simple clamping process, safety and reliability, strong practicality, easy replacement, and reduced radiation dose for personnel.

[0004] The present invention provides a long-distance manual centering and cutting fixture for isotope irradiation targets, the fixture comprising: a support seat, a movable slide table, a bubble level, and two clamping blocks;

[0005] The support seat has a coaxially arranged support portion and a mounting portion, the mounting portion is located on the support portion; the mounting portion is hollow and has a group of relatively arranged arc-shaped openings, the movable slide is fixed to the mounting portion after passing through the arc-shaped openings; the bottom of the movable slide has a group of square protrusions, and the bottom surface of the mounting portion and the corresponding positions of the arc-shaped openings are also provided with a group of sliding grooves to accommodate the square protrusions;

[0006] The bubble level is arranged on the top of the movable slide, the clamping block is installed on the movable slide, and the two clamping blocks move towards each other on the movable slide to realize the loosening and clamping functions of the clamp.

[0007] Optionally, the movable slide has a fixed portion and a slide portion extending from the middle of the fixed portion; the slide portion has a groove in its extending direction, and a locking screw inserted into the groove is provided on one side of the fixed portion away from the slide portion;

[0008] The tops of both ends of the fixing part are respectively provided with adjusting screws for adjusting the horizontality of the clamp.

[0009] Optionally, the two clamping blocks are installed in the groove in the form of a dovetail groove and assembled with the locking screw in the form of a thread;

[0010] When the locking screw is rotated, the two clamping blocks move toward each other, thereby realizing the loosening and clamping functions of the clamp.

[0011] Optionally, the clamping block is provided with a threaded hole for the locking screw to pass through.

[0012] Optionally, the clamping block has a clamping surface, and the clamping surface is a flat surface with an arc in the middle; when the two clamping blocks are arranged opposite to each other, the arcs of the clamping surfaces corresponding to the two clamping blocks form a space for placing the isotope irradiation target and realizing vertical clamping and horizontal clamping of the isotope irradiation target.

[0013] Optionally, the clamping surface is knurled to increase its contact friction.

[0014] Optionally, the locking screw and the movable slide are connected via a bearing, and the bearing is a cylindrical roller bearing.

[0015] Optionally, the locking screw adopts a trapezoidal thread to achieve a self-locking function after the rotation stops, and the handle of the locking screw adopts a cross structure.

[0016] Optionally, a fixing screw is provided at the bottom of the slide portion; and the bubble level is provided on the upper surface of the slide portion and is located at the fixing screw.

[0017] Optionally, one side of the mounting portion has a mounting hole, and an adjusting screw is inserted into the mounting hole and abuts against a movable slide mounted on the mounting portion;

[0018] The adjusting screw adopts a trapezoidal thread so as to play a self-locking function after the rotation stops.

[0019] The present invention provides a long-distance manual centering cutting fixture for isotope irradiation targets. The cutting fixture can be manually leveled over a long distance and can use a manipulator to quickly complete the clamping of the isotope irradiation target, thereby ensuring the concentricity of the isotope irradiation target clamped on a chuck and the flatness of the cut surface, reducing burrs on the cut surface, reducing the radiation dose of workers, and ensuring the integrity of the isotope irradiation product.

[0020] The long-distance manual centering cutting fixture for isotope irradiation targets of the present invention overcomes the shortcomings of eccentricity and difficulty in operation of isotope irradiation targets in the prior art after being clamped on a chuck, and avoids the uneven cutting surface and burrs of the isotope irradiation targets, which make it difficult to remove the isotope irradiation products in the targets. The present invention has a modular design, simple operation, strong practicality, and simple maintenance. It is convenient for workers to complete the cutting and sampling of isotope irradiation targets in the high-intensity radiation environment of a hot chamber, realizes the multi-directional clamping function of isotope irradiation targets, greatly reduces the working time and exposure dose of workers, and improves work efficiency and project implementation progress.

[0021] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a two-dimensional schematic diagram of a long-distance manual centering and cutting fixture for isotope irradiation targets according to an embodiment of the present invention;

[0024] Figure 2 A three-dimensional schematic diagram of a long-distance manual centering and cutting fixture for isotope irradiation targets according to an embodiment of the present invention;

[0025] Figure 3 It is a two-dimensional schematic diagram of a support base of a long-distance manual centering and cutting fixture for isotope irradiation targets according to an embodiment of the present invention;

[0026] Figure 4 A three-dimensional schematic diagram of a support base of a long-distance manual centering and cutting fixture for isotope irradiation targets according to an embodiment of the present invention;

[0027] Figure 5 It is a two-dimensional schematic diagram of a movable slide table of a long-distance manual centering and cutting fixture for isotope irradiation targets according to an embodiment of the present invention;

[0028] Figure 6 A three-dimensional schematic diagram of a movable slide table of a long-distance manual centering and cutting fixture for isotope irradiation targets according to an embodiment of the present invention;

[0029] Figure 7 It is a two-dimensional schematic diagram of a clamping block of a long-distance manual centering and cutting fixture for isotope irradiation targets according to an embodiment of the present invention;

[0030] Figure 8 A three-dimensional schematic diagram of a clamping block of a long-distance manual centering and cutting fixture for isotope irradiation targets according to an embodiment of the present invention;

[0031] Among them, 1-support seat, 11-support part, 12-mounting part, 13-arc opening, 14-slide groove, 15-mounting hole; 2-adjusting screw, 3-fixing screw, 4-locking screw, 5-bearing, 6-clamping block, 61-threaded hole, 62-clamping surface, 63-arc, 7-bubble level, 8-adjusting screw, 9-movable slide, 91-square protrusion, 92-fixing part, 93-slide part, 94-groove. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0036] The embodiment of the present invention provides a long-distance manual centering and cutting fixture for isotope irradiation target, such as Figures 1-2 As shown, the long-distance manual centering and cutting fixture for isotope irradiation targets of this embodiment includes: a support seat 1, a movable slide 9, a bubble level 7, and two clamping blocks 6.

[0037] like Figures 3-4As shown, the support seat 1 has a coaxially arranged support portion 11 and a mounting portion 12, and the mounting portion 12 is located on the support portion 11; both the support portion 11 and the mounting portion 12 can be cylindrical, and the height of the support portion 11 is greater than the height of the mounting portion 12, and the diameter of the mounting portion 12 is greater than the diameter of the support portion. The mounting portion 12 is hollow and has a group of relatively arranged arc openings 13, and the movable slide 9 is fixed to the mounting portion 12 after passing through the arc openings 13. The bottom of the movable slide 9 has a group of square protrusions 91, and a group of slide grooves 14 are also arranged at the corresponding positions of the bottom surface of the mounting portion 12 and the arc openings 13 to accommodate the square protrusions 91. It should be noted that the slide grooves 14 of the mounting portion 12 are arranged on the bottom surface corresponding to the arc openings 13, and are located at the edge of the mounting portion 12 beyond the support portion 11. By designing the square protrusions 91 on the lower plane of the movable slide 9, it is beneficial for the movable slide 9 to move safely and stably in the slide grooves 14 of the support seat. In this embodiment, the movable slide 9 is installed in the slide groove 14 of the support seat 1 in the form of a square protrusion 91 to ensure the guidance and position restriction of the slide. In practical applications, the movable slide 9 and the support seat 1 are made of stainless steel, which is suitable for harsh conditions such as high dose, high humidity, and high temperature in the hot room.

[0038] The bubble level 7 is arranged on the top of the movable slide 9, and the clamping block 6 is installed on the movable slide 9. The two clamping blocks 6 move toward each other on the movable slide 9 to realize the loosening and clamping functions of the clamp. One side of the mounting portion 12 has a mounting hole 15, and an adjusting screw 8 is inserted into the mounting hole 15 and abuts against the movable slide 9 installed on the mounting portion 12; the adjusting screw 8 adopts a trapezoidal thread to play a self-locking function after the rotation stops.

[0039] In the clamp provided in this embodiment, the movable slide 9 and the support seat 1 cooperate with each other in the form of a square slide rail, and are connected and assembled with the adjusting screw 8 in the form of a thread; when the adjusting screw 8 is rotated, the moving distance of the movable slide 9 can be controlled to realize the two-dimensional adjustment function of the center of the clamp.

[0040] like Figures 5-6 As shown, the movable slide 9 has a fixed portion 92 and a slide portion 93 extending from the middle of the fixed portion 92; that is, the directions of the fixed portion 92 and the slide portion 93 are perpendicular to each other. The upper plane of the movable slide 9 of this embodiment is designed in a triangular "Δ" form to reduce the volume and weight of the entire fixture, while also meeting the basic condition of determining a plane, which is convenient for transfer in the hot chamber and clamping operation of the master and slave manipulators.

[0041] The slide 93 has a groove 94 in its extension direction, and the fixed part 92 is provided with a locking screw 4 inserted into the groove 94 on one side away from the slide 93; the tops of both ends of the fixed part 92 are respectively provided with adjusting screws 2 for adjusting the horizontality of the clamp. The locking screw 4 and the movable slide 9 are connected by a bearing 5, and the bearing 5 adopts a cylindrical roller bearing 5. The bearing 5 of this embodiment has excellent radial load characteristics, large load-bearing capacity, can withstand large axial impact loads and can remain parallel to the shaft, and has excellent radial rigidity, will not produce excessive displacement at the contact with the shaft, and has self-lubricating ability; ensure the coaxiality of the locking screw 4 during the rotation process. The locking screw 4 adopts a trapezoidal thread to play a self-locking function after the rotation stops, and the handle of the locking screw 4 adopts a cross structure, which is convenient for the master and slave manipulators to remotely operate the loosening and clamping of the clamp, and can also cooperate with the force rod to operate it.

[0042] The adjusting screw 2 and the movable slide 9 are fixed by threaded connection, and a hexagonal inner hole is set on the top to facilitate the insertion of the inner diameter hexagonal wrench, which is beneficial for the master and slave manipulators to remotely operate various tools or methods for leveling; the adjusting screw 2 is divided into two, which are arranged at the two feet of the movable slide 9, which is convenient for adjusting the horizontal degree of the fixture. The handle of the adjusting screw 2 adopts a "cross" structure, which is convenient for the master and slave manipulators to remotely operate the leveling, and can also be operated with the force rod; and the adjusting screw 2 is divided into two, which are arranged at the two feet of the movable slide 9, which meets the horizontal degree adjustment of the fixture. The top of the adjusting screw 2 is set with a hexagonal inner hole, which is convenient for the insertion of the inner diameter hexagonal wrench, which is beneficial for the master and slave manipulators to remotely operate various tools or methods for leveling.

[0043] The bottom of the slide 93 is provided with a fixing screw 3; the bubble level 7 is provided on the upper surface of the slide 93 and is located at the fixing screw 3. Optionally, the bubble level 7 is bonded to the plane of the movable slide 9 and arranged at the position of the fixing screw 3 on the plane of the movable slide 9. The fixing screw 3 is located at the top of the movable slide 9 and serves as a fixing point and a supporting point in the leveling process. The master-slave manipulator operates the other two adjusting screws 2 to achieve the horizontal adjustment of the fixture.

[0044] The level instrument adopts a fully transparent cylindrical structure, which allows workers to observe the position of the level bubble in multiple dimensions outside the hot room, making it convenient for workers to operate the master and slave manipulators for leveling.

[0045] like Figures 7-8As shown, the clamping block 6 of this embodiment has a clamping surface 62, and the clamping surface 62 is flat with an arc 63 in the middle; when two clamping blocks 6 are arranged opposite to each other, the arcs 63 of the clamping surfaces 62 corresponding to the two clamping blocks 6 form a space for placing the isotope irradiation target, and realizing vertical clamping and horizontal clamping of the isotope irradiation target, meeting the multi-directional cutting requirements and clamping methods. The clamping surface 62 is knurled to increase its contact friction.

[0046] Optionally, the clamp block 6 is provided with a threaded hole 61 for the locking screw 4 to pass through. The two clamp blocks 6 are installed in the groove 94 in the form of a dovetail groove and assembled with the locking screw 4 in the form of a thread; when the locking screw 4 is rotated, the two clamp blocks 6 move toward each other to realize the loosening and clamping functions of the clamp, and the clamping range of the clamp is increased by adopting a bidirectional motion method.

[0047] The working principle of the long-distance manual centering and cutting fixture for isotope irradiation targets provided by an embodiment of the present invention is: through remote operation of a master-slave manipulator, the long-distance manual centering and cutting fixture for isotope irradiation targets of this embodiment is installed and fixed in the chuck of a milling machine; then the isotope irradiation target is vertically or horizontally clamped in the fixture, and the locking screw 4 is rotated to drive the two clamping blocks 6 to move toward each other to clamp the isotope irradiation target; then the two adjusting screws 2 are adjusted respectively to adjust the position of the level bubble to the middle position of the bubble level 7, and after the adjustment is completed; the adjusting screw 8 is rotated to adjust the movable slide 9 to the center position of the chuck; finally, the chuck of the milling machine is locked, and the milling machine is turned on for cutting.

[0048] The isotope irradiation target long-distance manual centering cutting fixture provided by the embodiment of the present invention has the following technical effects:

[0049] 1. Solve the problem of eccentricity of isotope irradiation targets after they are clamped on the chuck; in actual operation, the staff operates the master-slave manipulator outside the hot room, and can adjust the level and center position of the clamp remotely to avoid the eccentricity of the isotope irradiation target after clamping.

[0050] 2. Shorten working time and improve work efficiency; in the hot chamber environment, the master-slave manipulator can quickly adjust the level of the fixture, shorten the operation time, and reduce the radiation dose of personnel.

[0051] 3. High reliability: In the highly radioactive and humid environment of the hot chamber, the present invention is a fully mechanical device made of stainless steel, which can overcome the harsh working environment, has high reliability and long service life.

[0052] 4. It can clamp the isotope irradiation target in multiple directions; the clamping block 6 adopts a clamping surface 62 structure with a flat mouth and a circular arc 63 in the middle, which can realize vertical clamping and horizontal clamping of the isotope irradiation target and meet the multi-directional cutting requirements and clamping methods.

[0053] 5. Easy to operate remotely and highly practical; by rotating the adjusting screw 2 and the locking screw 4, the horizontal adjustment of the clamp and the clamping and loosening of the clamp can be achieved; by rotating the fixing screw, the center position of the clamp can be adjusted; its structure is convenient for the operation of the master and slave manipulators, the overall operation process is simple, and it has strong practicality.

[0054] 6. Compact structure and easy transportation; the movable slide 9 of the embodiment of the present invention adopts a "Δ"-like structure, which is compact, small in size and light in weight, and is conducive to transportation within the limited space of the hot chamber.

[0055] 7. Good processability and good economic prospects: The parts of the embodiment of the present invention have a simple structure, are easy to process, and have low manufacturing and installation costs. The clamp of this embodiment can be widely used in the clamping and cutting of isotope irradiation targets and has good application prospects.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A long-distance manual centering and cutting fixture for isotope irradiation targets, characterized in that: The clamp comprises: a support seat (1), a movable slide (9), a bubble level (7), and two clamping blocks (6); The support seat (1) comprises a coaxially arranged support portion (11) and a mounting portion (12), wherein the mounting portion (12) is located on the support portion (11); the mounting portion (12) is hollow and has a group of arc-shaped openings (13) arranged opposite to each other, and the movable slide (9) is fixed to the mounting portion (12) after passing through the arc-shaped openings (13); the bottom of the movable slide (9) comprises a group of square protrusions (91), and a group of sliding grooves (14) are further arranged at positions corresponding to the bottom surface of the mounting portion (12) and the arc-shaped openings (13) to accommodate the square protrusions (91); The bubble level (7) is arranged on the top of the movable slide (9), and the clamping block (6) is installed on the movable slide (9). The two clamping blocks (6) move towards each other on the movable slide (9) to realize the loosening and clamping functions of the clamp.

2. The cutting fixture according to claim 1, characterized in that: The movable slide (9) comprises a fixed portion (92) and a slide portion (93) extending from the middle of the fixed portion (92); the slide portion (93) has a groove (94) in its extending direction, and a locking screw (4) inserted into the groove (94) is provided on a side of the fixed portion (92) away from the slide portion (93); Adjustment screws (2) are respectively provided at the tops of both ends of the fixing portion (92) for adjusting the horizontality of the clamp.

3. The cutting fixture according to claim 2, characterized in that: The two clamping blocks (6) are installed in the groove (94) in the form of dovetail grooves and assembled with the locking screw (4) in the form of threads; When the locking screw (4) is rotated, the two clamping blocks (6) move towards each other, thereby realizing the loosening and clamping functions of the clamp.

4. The cutting fixture according to claim 3, characterized in that: The clamping block (6) is provided with a threaded hole (61) for the locking screw (4) to pass through.

5. The cutting fixture according to claim 3, characterized in that: The clamping block (6) has a clamping surface (62), and the clamping surface (62) is a flat surface with a circular arc (63) in the middle. When the two clamping blocks (6) are arranged opposite to each other, the circular arcs (63) of the clamping surfaces (62) corresponding to the two clamping blocks (6) form a space for placing an isotope irradiation target and realizing vertical clamping and horizontal clamping of the isotope irradiation target.

6. The cutting fixture according to claim 5, characterized in that: The clamping surface (62) is knurled to increase the friction of its contact.

7. The cutting fixture according to claim 2, characterized in that: The locking screw (4) and the movable slide (9) are connected via a bearing (5), and the bearing (5) is a cylindrical roller bearing (5).

8. The cutting fixture according to claim 2, characterized in that: The locking screw (4) adopts a trapezoidal thread to achieve a self-locking function after the rotation stops, and the handle of the locking screw (4) adopts a cross structure.

9. The cutting fixture according to claim 2, characterized in that: A fixing screw (3) is provided at the bottom of the slide portion (93); the bubble level (7) is provided on the upper surface of the slide portion (93) and is located at the fixing screw (3).

10. The cutting fixture according to any one of claims 1 to 9, characterized in that: One side of the mounting portion (12) is provided with a mounting hole (15), and an adjusting screw (8) is inserted into the mounting hole (15) and abuts against a movable slide (9) mounted on the mounting portion (12); The adjusting screw (8) adopts a trapezoidal thread so as to play a self-locking function after the rotation stops.

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