Winding and unwinding expansion shaft for diamond wire production
The expansion shaft sliding key structure solves the problem of unstable winding and unwinding in diamond wire production equipment, achieving stable fixing and convenient operation of diamond wire rolls, and improving production efficiency.
Patent Information
- Application Number
- CN202520320737.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-26
AI Technical Summary
The winding and unwinding structure of existing diamond wire production equipment has poor stability, especially at high speeds, which causes high-frequency vibration of the wire and affects the stability of the abrasive coating.
The expansion shaft slide key structure is adopted. The control shaft drives the expansion shaft slide key to move axially, realizing its contraction and opening, fixing the diamond wire coil. The design of multiple slide keys and positioning parts ensures stability.
It effectively avoids vibration during the winding and unwinding of diamond wire coils, improves the fixing effect, facilitates installation and disassembly, and enhances production efficiency.
Smart Images
Figure CN223632849U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of production of diamond wires, and in particular to a take-up and pay-off expansion shaft for diamond wire production. BACKGROUND
[0002] The diamond wire saw is a cutting tool made by firmly fixing diamond abrasive grains on a steel wire through electroplating. The electroplated diamond wire saw has the advantages of high cutting efficiency, smooth cutting surface, high material yield and small environmental pollution, and is suitable for processing ordinary hard and brittle materials such as ceramics and glass, and is particularly suitable for sawing valuable hard and brittle materials such as silicon and precious stones.
[0003] The stability of the take-up and pay-off of the diamond wire production equipment is a key factor in the diamond wire production process. At present, the common take-up and pay-off structure is fixed by adopting the two-side top method, but this fixing method has poor concentricity, especially during high-speed production, the take-up and pay-off moves at high speed, causing the wire body to present high-frequency vibration, and leading to unstable sanding. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the problem of poor stability of the existing take-up and pay-off structure, the application provides a take-up and pay-off expansion shaft for diamond wire production.
[0005] On the one hand, the application provides a take-up and pay-off expansion shaft for diamond wire production, which adopts the following technical scheme:
[0006] The take-up and pay-off expansion shaft for diamond wire production comprises an expansion shaft base body and an expansion shaft sliding key, the expansion shaft sliding key is slidably arranged on the outer periphery of the expansion shaft base body, the expansion shaft sliding key is used for sleeving the diamond wire roll, an installation groove is formed in the expansion shaft base body, a control shaft is rotatably connected in the installation groove, one end of the control shaft is connected with the expansion shaft sliding key, and the outer diameter of the expansion shaft base body gradually decreases along the direction close to the control shaft; the expansion shaft sliding key is moved along the axial direction of the expansion shaft base body by the control shaft, so as to realize the contraction and expansion of the expansion shaft sliding key.
[0007] By adopting the above technical scheme, the diamond wire roll is sleeved on the outer periphery of the expansion shaft sliding key, the control shaft is rotated, the control shaft is moved along the axial direction of the expansion shaft base body, the control shaft drives the expansion shaft sliding key to move along the axial direction of the expansion shaft base body, and since the outer diameter of the expansion shaft base body gradually decreases along the direction close to the control shaft, that is to say, when the control shaft drives the expansion shaft sliding key to move away from the expansion shaft base body, the outer diameter of the expansion shaft decreases, and vice versa, when the diamond wire roll needs to be fixed, the outer diameter of the expansion shaft is increased, and the diamond wire roll is tightly pressed against the expansion shaft, so as to realize the fixing. In this way, the expansion shaft can achieve good fixing effect on the diamond wire roll, and can avoid the vibration of the diamond wire roll during the take-up and pay-off as much as possible. In addition, the expansion shaft is also convenient for installing and fixing the diamond wire roll and convenient for disassembling.
[0008] Optionally, the plurality of expansion shaft sliding keys are arranged at intervals between adjacent two expansion shaft sliding keys, and each expansion shaft sliding key is arranged in a circumferential direction of the outer wall of the expansion shaft base body.
[0009] By adopting the above technical scheme, the plurality of expansion shaft sliding keys are simultaneously moved with the control shaft, so that a better fixing effect can be achieved on the diamond wire roll, and further, the diamond wire roll can be prevented from vibrating during the winding and unwinding process.
[0010] Optionally, a sliding groove is formed in the outer wall of the expansion shaft sliding key, the sliding groove is formed in an axial direction of the expansion shaft base body, a positioning member is arranged in the sliding groove, a positioning hole is formed in the expansion shaft base body, and the positioning member is inserted into the positioning hole through the sliding groove.
[0011] By adopting the above technical scheme, the positioning member is arranged, the expansion shaft sliding key is fixed by the positioning member after being moved to a suitable position, and the expansion shaft sliding key is prevented from sliding in the axial direction of the expansion shaft base body during the winding and unwinding process, so that the stability of the diamond wire roll during the winding and unwinding process is ensured.
[0012] Optionally, a positioning disc is arranged at an end of the control shaft away from the expansion shaft base body, and the positioning disc is connected to an end surface of the expansion shaft sliding key.
[0013] By adopting the above technical scheme, the positioning disc is arranged to simultaneously fix the plurality of expansion shaft sliding keys, so that the plurality of expansion shaft sliding keys can be simultaneously moved, the operation is convenient, and the displacement amount of each expansion shaft sliding key is ensured to be the same, so that the tensioning effect on the diamond wire roll is ensured.
[0014] Optionally, a mounting disc is fixed to an end of the expansion shaft base body away from the control shaft, a mounting hole is formed in the mounting disc, and the mounting disc is used to fix the expansion shaft base body.
[0015] By adopting the above technical scheme, the mounting disc is arranged, the expansion shaft base body is fixed by the mounting plate, and the expansion shaft base body is prevented from moving during the adjustment of the expansion shaft sliding key, so that the stability of the expansion shaft is ensured.
[0016] Optionally, a positioning groove is formed in the expansion shaft sliding key, a fastener is inserted into the positioning groove, the fastener is connected to an inner wall of the positioning groove through the positioning disc, the fastener is arranged in an axial direction of the expansion shaft base body, the positioning member is arranged in a radial direction of the expansion shaft base body, a linkage assembly is arranged between the fastener and the positioning member, and the linkage assembly is used to convert the movement of the fastener in the axial direction of the expansion shaft base body into the movement in the radial direction of the expansion shaft base body, so as to position the expansion shaft sliding key.
[0017] By adopting the above technical scheme, the linkage assembly is arranged, the expansion shaft sliding key is positioned by the positioning member through the operation of the fastener, the axial movement is converted into the radial movement, the operation is convenient, and the expansion shaft sliding key is positioned.
[0018] Optionally, the linkage assembly comprises a linkage shaft, a driving block, a driven block and an elastic member, the linkage groove is formed in the expansion shaft sliding key, the linkage shaft is slidably arranged in the linkage groove, one end of the linkage shaft is in contact with the fastener, the other end of the linkage shaft is connected with the driving block, the driven block is connected to one end of the positioning member close to the driving block, the positioning member is inserted into the expansion shaft base body, the side of the driving block facing the driven block is a first inclined surface, the side of the driven block facing the driving block is a second inclined surface, the elastic member is sleeved on the positioning member, one end of the elastic member is in contact with the driven block, and the other end of the elastic member is in contact with the inner wall of the sliding groove.
[0019] By adopting the above technical scheme, the fastener drives the linkage shaft to slide in the linkage groove, the linkage shaft drives the driving block to move along the axial direction of the expansion shaft base body, the driving block drives the driven block to move along the radial direction of the expansion shaft base body through the contact between the first inclined surface and the second inclined surface, and finally the driven block is tightly pressed, so as to realize the positioning of the expansion shaft sliding key. By arranging the linkage assembly, the fixing operation of the expansion shaft sliding key is facilitated.
[0020] Optionally, the end of the linkage shaft close to the fastener is provided with a connecting groove for inserting the fastener, and the fastener is threadedly connected with the positioning disc.
[0021] By adopting the above technical scheme, the fastener can be moved towards or away from the connecting shaft by rotating the fastener, when the fastener is moved towards the connecting shaft, the linkage shaft can be driven to move towards the connecting shaft, and the structure is simple and linkage is facilitated.
[0022] Optionally, the control shaft has a control end, and the control end is arranged outside the expansion shaft base body and sleeved with a control nut.
[0023] By adopting the above technical scheme, the control nut is arranged, so that the control shaft can be operated by a wrench or the like, and the operation is convenient.
[0024] Optionally, the fastener and the control end of the control shaft are arranged on the same side of the expansion shaft base body.
[0025] By adopting the above technical scheme, since the fastener and the control end of the control shaft are arranged on the same side of the expansion shaft base body, the expansion shaft sliding key can be adjusted and fixed conveniently.
[0026] Compared with the prior art, the present application has at least one of the following beneficial technical effects:
[0027] 1. The expansion shaft sliding key can fix the diamond wire well and avoid the diamond wire from vibrating during the winding and unwinding process.
[0028] 2. By controlling the contraction and expansion of the expansion shaft sliding key, it is convenient to install and dismount the diamond wire coil, and the operation is convenient;
[0029] 3. By setting multiple expansion shaft sliding keys, which can move with the control shaft, better fixing effect can be achieved on the diamond wire coil, and further avoid the diamond wire coil from shaking during winding and unwinding. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 is the internal cross-sectional view of the expansion shaft for winding and unwinding the diamond wire in the embodiment 1 of the present application.
[0031] Figure 2 is the side view of the expansion shaft for winding and unwinding the diamond wire in the embodiment 1 of the present application.
[0032] Figure 3 is the internal cross-sectional view of the expansion shaft for winding and unwinding the diamond wire in the embodiment 2 of the present application.
[0033] Figure 4 is the position relationship diagram of the driving block and the driven block in the embodiment 2 of the present application.
[0034] In the drawings:
[0035] 1, expansion shaft base body; 11, mounting groove; 12, positioning hole; 2, expansion shaft sliding key; 21, sliding groove; 22, linkage groove; 3, control shaft; 31, control end; 32, control nut; 4, positioning piece; 5, positioning disc; 51, positioning groove; 52, fastener; 6, mounting disc; 61, mounting hole; 7, linkage assembly; 71, linkage shaft; 72, driving block; 73, driven block; 74, elastic piece; 76, first inclined surface; 77, second inclined surface; 78, connecting groove. DETAILED DESCRIPTION
[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0037] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the term "and / or" in this paper is only to describe the association relationship of the associated objects, which means that there are three kinds of relationships, for example, A and / or B, which means that there are three kinds of situations, such as A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the front and rear associated objects without special explanation.
[0038] ReferenceFigure 1 The application provides a take-up and pay-off expansion shaft for diamond wire production, which comprises an expansion shaft base body 1 and an expansion shaft sliding key 2. The expansion shaft sliding key 2 is arranged on the outer periphery of the expansion shaft base body 1 and is used for sleeving a diamond wire roll. It can be understood that the diamond wire roll is wound on a spool, and the spool is sleeved on the expansion shaft sliding key 2. The diamond wire roll and the spool are not shown in the figure.
[0039] An installation groove 11 is formed in the expansion shaft base body 1 and extends along the axial direction of the expansion shaft base body 1. A control shaft 3 is rotatably connected in the installation groove 11. The control shaft 3 is threadedly connected with the installation groove 11. One end of the control shaft 3 is connected with the expansion shaft sliding key 2. The outer diameter of the expansion shaft base body 1 gradually decreases along the direction close to the control shaft 3. By rotating the control shaft 3, the control shaft 3 can move towards or away from the expansion shaft base body 1. The control shaft 3 drives the expansion shaft sliding key 2 to move towards or away from the expansion shaft base body 1, so as to realize the contraction and expansion of the expansion shaft sliding key 2.
[0040] Since the outer diameter of the expansion shaft base body 1 gradually decreases along the direction close to the control shaft 3, that is, when the control shaft 3 drives the expansion shaft sliding key 2 to move away from the expansion shaft base body 1, the outer diameter of the expansion shaft decreases, and vice versa. When it is necessary to fix the diamond wire roll, the control shaft 3 is rotated towards the side far away from the expansion shaft base body 1, so that the outer diameter of the expansion shaft increases and abuts against the spool of the diamond wire roll, so as to realize the fixation. In this way, the expansion shaft can achieve good fixation effect on the diamond wire roll, and can avoid the diamond wire roll from vibrating during the take-up and pay-off process. In addition, the expansion shaft is convenient for installing and fixing the diamond wire roll and convenient for disassembling the diamond wire roll, which helps to improve the work efficiency.
[0041] Further, a plurality of expansion shaft sliding keys 2 are arranged, and adjacent two expansion shaft sliding keys 2 are arranged at intervals. Each expansion shaft sliding key 2 is arranged along the outer wall of the expansion shaft base body 1 in the circumferential direction. In this embodiment, three expansion shaft sliding keys 2 are arranged. In other embodiments, the expansion shaft sliding key 2 can be four, five or six, and the number of the expansion shaft sliding key 2 can be set according to the needs, which is not limited herein.
[0042] By arranging a plurality of expansion shaft sliding keys 2, the plurality of expansion shaft sliding keys 2 can move simultaneously with the control shaft 3, so as to achieve better tensioning and fixation effect on the spool of the diamond wire roll, and to avoid the diamond wire roll from vibrating during the take-up and pay-off process as much as possible, so as to ensure the sanding effect of the diamond wire.
[0043] In some embodiments, a sliding groove 21 is formed on the outer wall of the expansion shaft sliding key 2 and extends along the axial direction of the expansion shaft base body 1. A positioning member 4 is arranged in the sliding groove 21. A positioning hole 12 is formed in the expansion shaft base body 1, and the positioning member 4 is inserted into the positioning hole 12 through the sliding groove 21.
[0044] It can be understood that, in the embodiment, the sliding groove 21 is a waist-shaped groove, and the positioning member 4 is a threaded positioning rod, which is threadedly connected in the positioning hole 12. When the expansion shaft sliding key 2 is moved to a proper position, the positioning member 4 is screwed to position the expansion shaft sliding key 2. When the positioning member 4 is not screwed, the expansion shaft sliding key 2 can be moved along the axial direction of the expansion shaft base body 1, and the positioning member 4 slides in the sliding groove 21 without interfering with the movement of the expansion shaft sliding key 2. By providing the positioning member 4, after the expansion shaft sliding key 2 is moved to a proper position, the expansion shaft sliding key 2 is fixed by the positioning member 4, so as to avoid the expansion shaft sliding key 2 from sliding along the axial direction of the expansion shaft base body 1 during the winding and unwinding process, thereby ensuring the stability of the diamond wire coil during winding and unwinding.
[0045] With reference to Figure 1 and Figure 2 , the end of the control shaft 3 away from the expansion shaft base body 1 is provided with a positioning disc 5, and the positioning disc 5 is connected with the end surface of the expansion shaft sliding key 2. Specifically, the expansion shaft sliding key 2 is provided with a positioning groove 51, and a fastener 52 is inserted in the positioning groove 51, and the fastener 52 is threadedly connected with the inner wall of the positioning groove 51 through the positioning disc 5. It can be understood that, in the embodiment, the fastener 52 is a bolt, and in other embodiments, the fastener 52 can also be a latch or an expansion screw, etc., which is not limited here.
[0046] By providing the positioning disc 5 to fix multiple expansion shaft sliding keys 2 at the same time, it is convenient to move multiple expansion shaft sliding keys 2 at the same time, and the displacement amount of each expansion shaft sliding key 2 can be ensured to be the same, so as to ensure the tensioning effect of the diamond wire coil.
[0047] The end of the expansion shaft base body 1 away from the control shaft 3 is fixed with a mounting disc 6, and the mounting disc 6 is provided with a mounting hole 61, and the mounting disc 6 is used to fix the expansion shaft base body 1. By providing the mounting disc 6 to fix the expansion shaft base body 1, when adjusting the expansion shaft sliding key 2, the movement of the expansion shaft base body 1 can be prevented, and the stability of the expansion shaft can be ensured.
[0048] In some embodiments, the positioning member 4 is arranged along the radial direction of the expansion shaft base body 1, the fastener 52 is arranged along the axial direction of the expansion shaft base body 1, and a linkage assembly 7 is arranged between the fastener 52 and the positioning member 4, and the linkage assembly 7 is used to convert the movement of the fastener 52 along the axial direction of the expansion shaft base body 1 into the movement along the radial direction of the expansion shaft base body 1, so as to position the expansion shaft sliding key 2. By providing the linkage assembly 7, by operating the fastener 52, the fastener 52 drives the positioning member 4 to position the expansion shaft sliding key 2 through the linkage assembly 7, and the axial movement is converted into radial movement, which is convenient for positioning the expansion shaft sliding key 2.
[0049] Specifically, with reference to Figure 3 andFigure 4 The linkage assembly 7 comprises a linkage shaft 71, a driving block 72, a driven block 73 and an elastic member 74. The linkage shaft 71 is slidably arranged in the linkage groove 22. One end of the linkage shaft 71 is in contact with the fastener 52, and the other end is connected with the driving block 72. The driven block 73 is fixed to one end of the positioning member 4 close to the driving block 72. The positioning member 4 is inserted into the expansion shaft base body 1. The side of the driving block 72 facing the driven block 73 is a first inclined surface 76, and the side of the first inclined surface 76 away from the linkage shaft 71 is inclined away from the driven block 73. The side of the driven block 73 facing the driving block 72 is a second inclined surface 77, and the side of the second inclined surface 77 away from the linkage shaft 71 is inclined towards the driving block 72. The elastic member 74 is sleeved on the positioning member 4. One end of the elastic member 74 is in contact with the driven block 73, and the other end is in contact with the inner wall of the sliding groove 21.
[0050] Specifically, in the present embodiment, the end of the linkage shaft 71 close to the fastener 52 is provided with a connecting groove 78 for inserting the fastener 52. The fastener 52 is threadedly connected with the positioning disc 5. The elastic member 74 is a spring in the present embodiment, but can also be a rubber sleeve in other embodiments, which is not limited here. When it is necessary to fix the expansion shaft sliding key 2, the fastener 52 is rotated to be tightened. When the fastener 52 is tightened, it moves towards the side close to the expansion shaft base body 1. The fastener 52 pushes the linkage shaft 71 to move towards the side close to the expansion shaft base body 1. The linkage shaft 71 drives the driving block 72 to move towards the side close to the expansion shaft base body 1, so that the first inclined surface 76 contacts the second inclined surface 77 and applies a downward force to the driven block 73. The driven block 73 presses the elastic member 74, and the driven block 73 is tightly abutted against the sliding groove 21, thereby fixing the expansion shaft sliding key 2. By arranging the linkage assembly 7, it is convenient to fix the expansion shaft sliding key 2.
[0051] It is not difficult to understand that in the present embodiment, the fastener 52 and the control end of the control shaft 3 are arranged on the same side of the expansion shaft base body 1. In this way, it is convenient to adjust and fix the expansion shaft sliding key 2, and the operation is convenient.
[0052] In some embodiments, the control shaft 3 has a control end 31 arranged outside the expansion shaft base body 1. A control nut 32 is arranged on the control end 31 and fixedly sleeved on the control end 31. By arranging the control nut 32, it is convenient to operate the control shaft 3 by using a wrench or the like, and the operation is convenient.
[0053] The implementation principle of the embodiment of the present application is that when the diamond wire roll is installed, the diamond wire roll is first sleeved on the outside of the expansion shaft, then the control nut 32 is rotated by a wrench or the like, the control nut 32 drives the control shaft 3 to rotate, the control shaft 3 drives the expansion shaft sliding key 2 to move in the direction of approaching the expansion shaft base body 1, the expansion shaft sliding key 2 moves along with the outer wall of the expansion shaft base body 1 and is opened, so that the expansion shaft sliding key 2 can abut against the diamond wire roll, and the fixing of the diamond wire roll is realized. Conversely, when the diamond wire roll is disassembled, the control nut 32 is reversely rotated, the expansion shaft sliding key 2 is contracted, and the diamond wire roll is conveniently taken off.
[0054] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A take-up and pay-off expansion shaft for production of a diamond wire, characterized in that, The utility model relates to an expandable shaft, which comprises: An expandable shaft base (1) and an expandable shaft sliding key (2) are arranged on the outer periphery of the expandable shaft base (1), the expandable shaft sliding key (2) is used for winding a diamond wire, a mounting groove (11) is formed in the expandable shaft base (1), a control shaft (3) is rotatably connected in the mounting groove (11), one end of the control shaft (3) is connected with the expandable shaft sliding key (2), and the outer diameter of the expandable shaft base (1) gradually decreases along the direction close to the control shaft (3); the control shaft (3) drives the expandable shaft sliding key (2) to move along the axial direction of the expandable shaft base (1) to realize the contraction and expansion of the expandable shaft sliding key (2).
2. The winding and unwinding expansion shaft for diamond wire production according to claim 1, characterized in that: A plurality of expandable shaft sliding keys (2) are arranged, and adjacent two expandable shaft sliding keys (2) are arranged at intervals, and each expandable shaft sliding key (2) is arranged in the circumferential direction of the outer wall of the expandable shaft base (1).
3. The winding and unwinding expansion shaft for diamond wire production according to claim 1, characterized in that: A sliding groove (21) is formed in the outer wall of the expandable shaft sliding key (2), the sliding groove (21) is formed in the axial direction of the expandable shaft base (1), a positioning member (4) is arranged in the sliding groove (21), a positioning hole (12) is formed in the expandable shaft base (1), and the positioning member (4) is inserted into the positioning hole (12) through the sliding groove (21).
4. The winding and unwinding expansion shaft for diamond wire production according to claim 3, characterized in that: A positioning disc (5) is arranged at the end of the control shaft (3) away from the expandable shaft base (1), and the positioning disc (5) is connected with the end surface of the expandable shaft sliding key (2).
5. The winding and unwinding expansion shaft for diamond wire production according to claim 1, characterized in that: An installation disc (6) is fixed to the end of the expandable shaft base (1) away from the control shaft (3), an installation hole (61) is formed in the installation disc (6), and the installation disc (6) is used for fixing the expandable shaft base (1).
6. The winding and unwinding expansion shaft for diamond wire production according to claim 4, characterized in that: A positioning groove (51) is formed in the expandable shaft sliding key (2), a fastener (52) is inserted into the positioning groove (51), the fastener (52) is connected with the inner wall of the positioning groove (51) through the positioning disc (5), the fastener (52) is arranged in the axial direction of the expandable shaft base (1), the positioning member (4) is arranged in the radial direction of the expandable shaft base (1), a linkage assembly (7) is arranged between the fastener (52) and the positioning member (4), the linkage assembly (7) is used for converting the movement of the fastener (52) in the axial direction of the expandable shaft base (1) into the movement in the radial direction of the expandable shaft base (1) to position the expandable shaft sliding key (2).
7. The winding and unwinding expansion shaft for diamond wire production according to claim 6, characterized in that: The linkage assembly (7) comprises a linkage shaft (71), a driving block (72), a driven block (73) and an elastic member (74), a linkage groove (22) is formed in the expansion shaft sliding key (2), the linkage shaft (71) is slidably arranged in the linkage groove (22), one end of the linkage shaft (71) is in contact with the fastener (52), the other end is connected with the driving block (72), the driven block (73) is connected to one end of the positioning member (4) close to the driving block (72), the positioning member (4) is inserted into the expansion shaft base body (1), one side of the driving block (72) facing the driven block (73) is a first inclined surface (76), one side of the driven block (73) facing the driving block (72) is a second inclined surface (77), the elastic member (74) is sleeved on the positioning member (4), one end of the elastic member (74) is in contact with the driven block (73), and the other end is in contact with the inner wall of the sliding groove (21).
8. The winding and unwinding expansion shaft for diamond wire production according to claim 7, characterized in that: The end of the linkage shaft (71) close to the fastener (52) is provided with a connecting groove (78), and the connecting groove (78) is used for inserting the fastener (52).
9. The winding and unwinding expansion shaft for diamond wire production according to claim 8, characterized in that: The control shaft (3) has a control end (31), the control end (31) is arranged outside the expansion shaft base body (1), and the control nut (32) is sleeved on the control end (31).
10. The winding and unwinding expansion shaft for diamond wire production according to claim 9, characterized in that: The fastener (52) and the control end (31) of the control shaft (3) are arranged on the same side of the expansion shaft base body (1).