A production device of special-shaped rock wool strip

Abstract

The application discloses a special-shaped rock wool strip production equipment applied to the rock wool processing technical field, and improves the transmission stability of input conveying belts and output conveying belts on rock wool plate and special-shaped rock wool strips through the stable pressure conveying belt, and cooperates with visual monitoring cameras to perform real-time industrial visual monitoring on the cutting process of the rock wool plate, effectively improves the processing accuracy of the special-shaped rock wool strip, timely finds accidents and makes the equipment brake in an emergency; the rock wool scraps are pushed onto the cotton scrap plate, the rock wool scraps fall through the scrap falling holes, the rock wool scraps directly pass through the gap of the cutting saw wheel shaft cutting the rock wool plate and fall to the bottom of the cutting box, the rock wool scraps are prevented from piling up on the rock wool plate, the cutting quality of the rock wool plate is effectively improved, the visual monitoring cameras can accurately monitor the cutting state of the rock wool plate, meanwhile, the cutting gap on the rock wool plate is expanded and filled by the cutting gasket, the cutting gap is effectively prevented from closing, and the cotton scraps can pass through the cutting gap.

Description

Technical Field

[0001] This invention relates to the field of rock wool processing technology, and in particular to a production equipment for irregularly shaped rock wool strips. Background Technology

[0002] Rock wool products are made primarily from high-quality basalt and dolomite. After high-temperature melting, the fibers are centrifuged at high speed using a centrifuge. A certain amount of binder, dust-proofing oil, and water-repellent agent are sprayed in, and the fibers are collected by a cotton collector. The final product is obtained through a pendulum method, combined with a three-dimensional cotton-laying process, followed by curing. Rock wool strips are cut from whole rock wool boards and transported through a cutting device via a conveyor, as disclosed in Chinese Patent CN115123768A. To improve the accuracy of rock wool during the transmission and cutting process, industrial vision monitoring technology is typically used to monitor the rock wool during processing, such as the industrial vision-based circular tube belt conveyor belt surface monitoring system disclosed in Chinese Patent CN120589398A. However, in practical applications, the rock wool strip processing generates a large amount of rock wool debris, which accumulates on the rock wool boards, affecting the cutting and processing of the rock wool strips and also impacting the accuracy of visual monitoring. Summary of the Invention

[0003] The core of this invention lies in the method of allowing rock wool debris accumulated on rock wool boards to fall downwards through cutting gaps, thereby solving the problem in the prior art that rock wool debris affects the cutting and processing of rock wool strips and the accuracy of visual monitoring.

[0004] To solve the above problems, the present invention adopts the following technical solution.

[0005] A production equipment for irregularly shaped rock wool strips includes a processing machine tool, a cutting box fixedly connected to the middle of the processing machine tool, an input conveyor belt and an output conveyor belt fixedly connected to both ends of the cutting box, and a pressure stabilizing conveyor belt fixedly connected to the top of the end of the input conveyor belt and the output conveyor belt near the cutting box, and the two pressure stabilizing conveyor belts are arranged parallel to the input conveyor belt and the output conveyor belt respectively. The top and bottom of the cutting box are rotatably connected to the top of the cutting box near the input conveyor belt, and the cutting saw wheel shaft is rotatably connected to the top of the cutting box near the output conveyor belt. A visual monitoring camera is fixedly connected to the top of the cutting box, with the camera end of the visual monitoring camera facing the cutting saw wheel shaft. A chip removal plate is fixedly connected to the end of the cutting box away from the turning saw wheel shaft. The end of the chip removal plate near the turning saw wheel shaft is set at an angle. Multiple chip removal holes are equidistantly opened at the end of the chip removal plate near the output conveyor belt. The chip removal holes are vertically aligned with the saw blade of the cutting saw wheel shaft. A cutting pad is fixedly connected to the end of the chip removal holes near the cutting saw wheel shaft. The thickness of the cutting pad is the same as the thickness of the saw blade of the cutting saw wheel shaft.

[0006] Furthermore, filling strips are fixedly connected at equal intervals to the bottom of the cotton scrap board. The filling strips are vertically aligned with the saw blade of the turning saw wheel shaft, and the end of the filling strip near the cutting saw wheel shaft is flush with the beveled end of the cotton scrap board.

[0007] Furthermore, an air inlet pipe and an air outlet pipe are fixedly connected to the top and bottom of the cutting box, respectively. The air inlet pipe extends into the interior of the cutting box, and a blow hole is opened at the bottom of the air inlet pipe. The blow hole is inclined towards the cutting saw wheel shaft.

[0008] Furthermore, the top of the cutting pad is higher than the cotton scrap plate, and the width of the end of the cutting pad near the scrap hole is greater than the width of the scrap hole.

[0009] Furthermore, a protrusion is fixedly connected between two adjacent chip removal holes. The height of the two ends of the protrusion is lower than the height of the middle part, and the two ends of the protrusion are flush with the upper opening of the chip removal hole.

[0010] Optionally, the top and bottom of the cutting box are rotatably connected to an upper guide wheel shaft and a lower guide wheel shaft, respectively. Multiple drive wheels are fixedly connected at equal intervals to the outside of the turning saw wheel shaft. A transmission rubber band is sleeved between the upper guide wheel shaft, the lower guide wheel shaft and the drive wheels, and the transmission rubber band passes through the chip removal hole.

[0011] Furthermore, an extension plate is fixedly connected to the bottom of the cutting pad. The extension plate is arranged in an arc shape relative to the saw blade of the cutting saw wheel shaft, and the end of the extension plate and the cutting pad near the chip removal hole is in sliding contact with the transmission rubber band.

[0012] Furthermore, guide wires are uniformly fixed to the outside of the transmission rubber band. The length of the guide wires is the same as the length of the chip removal hole, and the guide wires are made of wear-resistant rubber material. A sliding groove is opened on the surface of the extension plate and the cutting pad near the chip removal hole, and the guide wires slide in contact with the sliding groove.

[0013] Compared with the prior art, the advantages of this invention are: (1) This invention pushes rock wool fragments onto a cotton scrap board, and the rock wool fragments on the cotton scrap board fall through the chip drop hole, so that the rock wool fragments directly pass through the gap created by the cutting saw wheel shaft cutting the rock wool board and fall to the bottom of the cutting box, avoiding the accumulation of rock wool fragments on the rock wool board, effectively improving the cutting quality of the rock wool board, and facilitating the visual monitoring camera to accurately monitor the cutting status of the rock wool board. At the same time, the cutting pad is used to open and fill the cutting gap on the rock wool board, effectively preventing the cutting gap from closing, and facilitating the passage of cotton fragments through the cutting gap.

[0014] (2) The present invention uses a pressure-stabilizing conveyor belt in conjunction with an input conveyor belt to clamp the rock wool board, which effectively improves the stability of the rock wool board when it is fed into the cutting box. The pressure-stabilizing conveyor belt in conjunction with an output conveyor belt to clamp the irregular rock wool strips effectively improves the conveying stability of the irregular rock wool strips. Furthermore, the present invention uses a visual monitoring camera to perform real-time industrial visual monitoring of the cutting process of the rock wool board, which effectively improves the processing accuracy of the irregular rock wool strips and enables timely detection of accidents and emergency braking of the equipment. Attached Figure Description

[0015] Figure 1 This is a cross-sectional perspective view of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the cutting housing of the present invention; Figure 4 This is a demonstration diagram showing the processing of rock wool boards into irregularly shaped rock wool strips according to the present invention; Figure 5 This is a three-dimensional structural diagram of the turning saw wheel shaft and the cutting saw wheel shaft of the present invention; Figure 6 This is a top perspective view of the turning saw wheel shaft, the cutting saw wheel shaft, and the cotton scraping plate of the present invention. Figure 7 This is a top-view perspective view of the cotton scrap board of the present invention; Figure 8 This is a bottom-view perspective view of the cotton scrap board of the present invention; Figure 9 This is a three-dimensional cross-sectional view of the upper guide wheel shaft, lower guide wheel shaft, and transmission rubber band of the present invention. Figure 10 This is a three-dimensional structural diagram of the upper guide wheel shaft, lower guide wheel shaft, and transmission rubber band of the present invention; Figure 11 This is a three-dimensional structural diagram of the transmission rubber band of the present invention; Figure 12 This is a three-dimensional structural diagram of the extension plate of the present invention.

[0016] Explanation of the labels in the diagram: 1. Machine tool, 101. Cutting box, 102. Input conveyor belt, 103. Output conveyor belt, 104. Stabilizing conveyor belt, 105. Turning saw wheel shaft, 106. Cutting saw wheel shaft, 107. Visual monitoring camera, 108. Air inlet pipe, 109. Air outlet pipe, 110. Air blowing hole, 2. Shavings board, 201. Chip removal hole, 202. Cutting pad, 203. Filling strip, 204. Protrusion, 205. Upper guide wheel shaft, 206. Lower guide wheel shaft, 207. Drive wheel, 208. Transmission rubber band, 209. Extension plate, 210. Guide wire, 211. Sliding groove. Detailed Implementation

[0017] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0018] First implementation method: Please see Figure 1 and Figure 2 A production device for irregularly shaped rock wool strips includes a processing machine tool 1. A cutting box 101 is fixedly connected to the middle of the processing machine tool 1. An input conveyor belt 102 and an output conveyor belt 103 are fixedly connected to both ends of the cutting box 101, respectively. Rock wool boards are fed into the cutting box 101 through the input conveyor belt 102, and irregularly shaped rock wool strips obtained after cutting are sent out of the cutting box 101 through the output conveyor belt 103. A pressure-stabilizing conveyor belt 104 is fixedly connected to the top of the end of the input conveyor belt 102 and the output conveyor belt 103 near the cutting box 101. The two pressure-stabilizing conveyor belts 104 are arranged parallel to the input conveyor belt 102 and the output conveyor belt 103, respectively. The pressure-stabilizing conveyor belts 104 cooperate with the input conveyor belt 102 to clamp the rock wool boards, thereby effectively improving the conveying stability of the rock wool boards. The pressure-stabilizing conveyor belts 104 cooperate with the output conveyor belt 103 to clamp the irregularly shaped rock wool strips, thereby effectively improving the conveying stability of the irregularly shaped rock wool strips. During the processing and production of irregularly shaped rock wool strips, the input conveyor belt 102 feeds the rock wool board into the cutting box 101. At the same time, the pressure stabilizing conveyor belt 104 works with the input conveyor belt 102 to clamp the rock wool board, effectively improving the stability of the rock wool board being fed into the cutting box 101. The rock wool board is divided and turned within the cutting box 101. The pressure stabilizing conveyor belt 104 works with the output conveyor belt 103 to clamp the irregularly shaped rock wool strips, effectively improving the conveying stability of the irregularly shaped rock wool strips. The resulting irregularly shaped rock wool strips are then sent out of the cutting box 101 by the output conveyor belt 103.

[0019] Please see Figures 3 to 4 Inside the cutting box 101, at the top and bottom near the input conveyor belt 102, there are rotatably connected turning saw shafts 105. Rock wool boards fed into the cutting box 101 are grooved using the turning saw shafts 105. Inside the cutting box 101, at the end near the output conveyor belt 103, there is a rotatably connected cutting saw shaft 106. The cutting saw shaft 106 cuts the rock wool boards into rock wool strips. A visual monitoring camera 107 is fixedly connected to the top of the cutting box 101. The camera end of the visual monitoring camera 107 faces the cutting saw shaft 106. The visual monitoring camera 107 performs industrial visual monitoring of the cutting process of the rock wool boards, and monitors the processing accuracy of the irregular rock wool strips in real time. In the event of a production accident, after the visual monitoring camera 107 acquires abnormal image information, it can feed it back to the controller of the production equipment, so that the controller can control the equipment to stop working urgently.

[0020] Please see Figure 1 and Figures 6 to 8A cotton shavings plate 2 is fixedly connected to the end of the cutting box 101 away from the turning saw wheel shaft 105. The end of the cotton shavings plate 2 near the turning saw wheel shaft 105 is set at an angle. When the rock wool board passes under the cotton shavings plate 2, the debris on the rock wool board is pushed onto the cotton shavings plate 2, realizing the separation of the rock wool board and the debris. Multiple chip dropping holes 201 are equally spaced at the end of the cotton shavings plate 2 near the output conveyor belt 103. The chip dropping holes 201 are vertically aligned with the saw blade of the cutting saw wheel shaft 106. The debris on the cotton shavings plate 2 falls through the chip dropping holes 201. The chip dropping holes 201 correspond to the gaps cut by the cutting saw wheel shaft 106 on the rock wool board, so that the debris can directly pass through the gaps and fall to the bottom of the cutting box 101. A cutting pad 202 is fixedly connected to the end of the chip dropping holes 201 near the cutting saw wheel shaft 106. The thickness of the cutting pad 202 is the same as the thickness of the saw blade of the cutting saw wheel shaft 106. (The saw blade of the cutting saw wheel shaft 106 is usually 0.5cm thick, and the thickness of large saw blades includes 1cm. The saw blade on the turning saw wheel shaft 105 is the same as the saw blade on the cutting saw wheel shaft 106. According to the width of the groove, select an appropriate number of saw blades to stack and combine on the turning saw wheel shaft 105.) The cutting pad 202 is used to open and fill the cutting gap on the rock wool board, which effectively improves the transmission stability of the irregular rock wool strip and avoids the irregular rock wool strip from breaking due to shaking during the cutting process. The bottom of the cotton scrap board 2 is fixedly connected with filling strips 203 at equal intervals. The filling strips 203 are vertically corresponding to the saw blade of the turning saw wheel shaft 105, and the end of the filling strip 203 near the cutting saw wheel shaft 106 is flush with the inclined end of the cotton scrap board 2. The filling strips 203 are inserted into the groove of the turning saw wheel shaft 105 on the rock wool board to push the debris in the groove onto the cotton scrap board 2. During the processing of irregularly shaped rock wool strips, the turning saw wheel shaft 105 and the cutting saw wheel shaft 106 generate a large amount of rock wool debris during the grooving and cutting of the rock wool board. The debris moves with the rock wool board to the bottom of the debris board 2. Using the inclined surface of the debris board 2, the rock wool debris is pushed onto the debris board 2. The rock wool debris on the debris board 2 falls through the chip drop hole 201. The rock wool debris directly passes through the gap created by the cutting saw wheel shaft 106 cutting the rock wool board and falls to the bottom of the cutting box 101, avoiding the accumulation of rock wool debris on the rock wool board. This effectively improves the cutting quality of the rock wool board and facilitates the monitoring of the cutting of the rock wool board by the visual monitoring camera 107, effectively improving the accuracy of the industrial visual monitoring of the visual monitoring camera 107. The cutting pad 202 is used to open and fill the cutting gap on the rock wool board, effectively preventing the cutting gap from closing and facilitating the passage of rock wool debris through the cutting gap.

[0021] Please see Figure 1 and Figure 3An air inlet pipe 108 and an air outlet pipe 109 are fixedly connected to the top and bottom of the cutting box 101, respectively. The air inlet pipe 108 extends into the interior of the cutting box 101, and a blower hole 110 is provided at the bottom of the air inlet pipe 108. The blower hole 110 is inclined towards the cutting saw wheel shaft 106. Air is supplied into the cutting box 101 through the air inlet pipe 108, and the air is blown out through the blower hole 110. The air blower blows the rock wool debris between the cutting saw wheel shaft 106 and the rock wool board towards the rock wool board 2, further improving the cleanliness of the rock wool board cutting position and facilitating precise industrial visual monitoring by the visual monitoring camera 107. The rock wool debris at the bottom of the cutting box 101 is discharged from the exhaust pipe 109 along with the air blower, facilitating... The rock wool debris recycling process involves a cutting pad 202 with its top extending above the rock wool board 2. The width of the cutting pad 202 near the debris hole 201 is greater than the width of the debris hole 201. The higher cutting pad 202 shields the debris hole 201 from the wind, allowing the blown rock wool debris to stay on the back of the cutting pad 202, thus facilitating the rock wool debris to pass through the debris hole 201 and descend. A protrusion 204 is fixedly connected between two adjacent debris holes 201. The height of the two ends of the protrusion 204 is lower than the height of the middle part, and the two ends of the protrusion 204 are flush with the upper opening of the debris hole 201. The rock wool debris pushed onto the rock wool board 2 slides down the protrusion 204 to both ends, guiding the rock wool debris to move towards the debris hole 201. During the processing of irregularly shaped rock wool strips, air is supplied to the cutting box 101 through the air inlet pipe 108. The air is blown out from the air blowing hole 110, which blows the rock wool debris between the cutting saw wheel shaft 106 and the rock wool board toward the cotton debris plate 2. This makes it easier for the rock wool debris to be pushed onto the cotton debris plate 2, further improving the cleanliness of the rock wool board cutting processing position and facilitating the precise industrial visual monitoring of the visual monitoring camera 107. The rock wool debris pushed onto the cotton debris plate 2 slides down along the protrusion 204 to both ends, guiding the rock wool debris to move toward the chip dropping hole 201. The raised cutting pad 202 shields the chip dropping hole 201 from the wind, making it easier for the rock wool debris to stay on the back of the cutting pad 202, and thus making it easier for the rock wool debris to fall through the chip dropping hole 201.

[0022] Second implementation method: Compared to the first embodiment, the main addition is a transmission rubber band 208, the specific addition structure is as follows, and the rest of the structure is the same as the first embodiment.

[0023] Please see Figures 9 to 12The top and bottom of the cutting box 101 are rotatably connected to an upper guide wheel shaft 205 and a lower guide wheel shaft 206, respectively. Multiple drive wheels 207 are fixedly connected at equal intervals to the outside of the turning saw wheel shaft 105. A transmission rubber band 208 is sleeved between the upper guide wheel shaft 205, the lower guide wheel shaft 206, and the drive wheels 207. The transmission rubber band 208 passes through the chip removal hole 201. During the rotation of the turning saw wheel shaft 105, the drive wheels 207 drive the transmission rubber band 208, thus enabling the transmission rubber band 208 to move upwards and downwards. The guide wheel shaft 205, the lower guide wheel shaft 206, and the drive wheel 207 rotate. As the transmission rubber band 208 passes through the chip removal hole 201, it drives the rock wool debris through the chip removal hole 201 and guides the rock wool debris through the cutting gap. An extension plate 209 is fixedly connected to the bottom of the cutting pad 202. The extension plate 209 is arranged in an arc shape relative to the saw blade of the cutting saw wheel shaft 106, and the ends of the extension plate 209 and the cutting pad 202 near the chip removal hole 201 are in sliding contact with the transmission rubber band 208. The portion of the transmission rubber band 208 that contacts the extension plate 209 and the cutting pad 202 moves upward. The extension plate 209 separates the saw blade of the cutting saw wheel shaft 106 from the transmission rubber band 208, effectively preventing the saw wheel from contacting the transmission rubber band 208. Guide wires 210 are uniformly fixedly connected to the outside of the transmission rubber band 208. The length of the guide wires 210 is the same as the length of the chip removal hole 201. The guide wires 210 increase the contact area between the transmission rubber band 208 and the chip removal hole 201, facilitating transmission. The rubber band 208 drives more rock wool debris through the chip removal hole 201, and the guide wire 210 is made of wear-resistant rubber material. The extension plate 209 and the cutting pad 202 have a sliding groove 211 on the surface of the end near the chip removal hole 201. The guide wire 210 slides in contact with the sliding groove 211, so that the guide wire 210 bends and folds in the sliding groove 211 when it moves upward with the transmission rubber band 208, effectively avoiding affecting the sliding between the transmission rubber band 208 and the extension plate 209 and the cutting pad 202. When rock wool debris is pushed onto the debris plate 2, the turning saw wheel shaft 105 drives the transmission rubber band 208 through the drive wheel 207, causing the transmission rubber band 208 to rotate between the upper guide wheel shaft 205, the lower guide wheel shaft 206 and the drive wheel 207. As the transmission rubber band 208 passes through the debris hole 201, it carries the rock wool debris through the debris hole 201 and guides the rock wool debris through the cutting gap. The guide wire 210 increases the contact area between the transmission rubber band 208 and the debris hole 201, making it easier for the transmission rubber band 208 to carry more rock wool debris through the debris hole 201, thereby effectively improving the falling efficiency of the rock wool debris.

[0024] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A production equipment for irregularly shaped rock wool strips, comprising a processing machine tool (1), wherein a cutting box (101) is fixedly connected to the middle of the processing machine tool (1), and an input conveyor belt (102) and an output conveyor belt (103) are fixedly connected to both ends of the cutting box (101), characterized in that: The input conveyor belt (102) and the output conveyor belt (103) are both fixedly connected to the top of one end of the cutting box (101) with a voltage stabilizing conveyor belt (104), and the two voltage stabilizing conveyor belts (104) are arranged parallel to the input conveyor belt (102) and the output conveyor belt (103) respectively. The top and bottom of the cutting box (101) near the input conveyor belt (102) are rotatably connected to a turning saw wheel shaft (105). The cutting box (101) near the output conveyor belt (103) is rotatably connected to a cutting saw wheel shaft (106). A visual monitoring camera (107) is fixedly connected to the top of the cutting box (101), and the camera end of the visual monitoring camera (107) faces the cutting saw wheel shaft (106). A shaving plate (2) is fixedly connected to the end of the cutting box (101) away from the turning saw wheel shaft (105). The end of the shaving plate (2) near the turning saw wheel shaft (105) is set at an angle. Multiple chip removal holes (201) are equidistantly opened at the end of the shaving plate (2) near the output conveyor belt (103). The chip removal holes (201) are vertically corresponding to the wheel saw blade of the cutting saw wheel shaft (106). A cutting pad (202) is fixedly connected to the end of the chip removal hole (201) near the cutting saw wheel shaft (106). The thickness of the cutting pad (202) is the same as the thickness of the wheel saw blade of the cutting saw wheel shaft (106).

2. The production equipment for irregularly shaped rock wool strips according to claim 1, characterized in that: The bottom of the cotton scrap board (2) is fixedly connected with filling strips (203) at equal intervals. The filling strips (203) are vertically corresponding to the wheel saw blade of the turning saw wheel shaft (105), and the end of the filling strip (203) near the cutting saw wheel shaft (106) is flush with the inclined end of the cotton scrap board (2).

3. The production equipment for irregularly shaped rock wool strips according to claim 1, characterized in that: The top and bottom of the cutting box (101) are respectively fixedly connected to an air inlet pipe (108) and an air outlet pipe (109). The air inlet pipe (108) extends into the cutting box (101), and a blower hole (110) is opened at the bottom of the air inlet pipe (108). The blower hole (110) is inclined toward the cutting saw wheel shaft (106).

4. The production equipment for irregularly shaped rock wool strips according to claim 1, characterized in that: The top of the cutting pad (202) is higher than the cotton scrap plate (2), and the width of the end of the cutting pad (202) near the scrap hole (201) is greater than the width of the scrap hole (201).

5. The production equipment for irregularly shaped rock wool strips according to claim 1, characterized in that: A protrusion (204) is fixedly connected between two adjacent chip removal holes (201). The height of the two ends of the protrusion (204) is lower than the height of the middle part, and the two ends of the protrusion (204) are flush with the upper opening of the chip removal hole (201).

6. The production equipment for irregularly shaped rock wool strips according to claim 1, characterized in that: The top and bottom of the cutting box (101) are respectively rotatably connected to an upper guide wheel shaft (205) and a lower guide wheel shaft (206). Multiple drive wheels (207) are fixedly connected at equal intervals to the outside of the turning saw wheel shaft (105). A transmission rubber band (208) is sleeved between the upper guide wheel shaft (205), the lower guide wheel shaft (206) and the drive wheels (207). The transmission rubber band (208) passes through the chip removal hole (201).

7. The production equipment for irregularly shaped rock wool strips according to claim 6, characterized in that: The bottom of the cutting pad (202) is fixedly connected to an extension plate (209). The extension plate (209) is arranged in an arc shape with respect to the saw blade of the cutting saw wheel shaft (106). The end of the extension plate (209) and the cutting pad (202) near the chip hole (201) is in sliding contact with the transmission rubber band (208).

8. The production equipment for irregularly shaped rock wool strips according to claim 7, characterized in that: The transmission rubber band (208) is uniformly fixedly connected with guide wires (210). The length of the guide wires (210) is the same as the length of the chip removal hole (201). The guide wires (210) are made of wear-resistant rubber material. The extension plate (209) and the cutting pad plate (202) have sliding grooves (211) on the surface of one end near the chip removal hole (201). The guide wires (210) slide in contact with the sliding grooves (211).

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