Slotting device for batten arc-shaped groove

Abstract

The utility model discloses a batten arc-shaped groove slotting device, which relates to the field of wood processing, and comprises a workbench, a slotting mechanism arranged below the workbench, a positioning and clamping mechanism arranged on the workbench, the positioning and clamping mechanism comprises a top roller bracket, two side roller brackets are arranged on the top roller bracket, and the two side roller brackets are arranged on the top roller bracket. Two L-shaped hydraulic pipes are fixed to the top roller support, first piston rods are connected to the hydraulic pipes in a sealed and sliding mode, second piston rods are connected to the other ends of the hydraulic pipes in a sealed and sliding mode, driving plates are fixed to the second piston rods, guide grooves are formed in the second piston rods, and two protruding blocks are arranged on the side roller support and connected with the guide grooves in a sliding mode. The device has the beneficial effects that in the process that a sliding block drives a top roller support to descend, after a top pressing roller abuts against the top of a batten, the top roller support cannot move, at the moment, the sliding block continues to descend to press a first piston rod to move, then the first piston rod drives a driving plate to move, and the driving plate drives a side roller support to move inwards through a guide groove to clamp the batten.

Description

Technical Field

[0001] This utility model relates to the field of wood processing, and in particular to a grooving device for arc-shaped grooves in timber. Background Technology

[0002] Wood, as a commonly used raw material in daily life, has been widely used in fields such as housing construction, furniture making, and musical instrument production. With the diversification of people's artistic aesthetics, various unique designs have been created. Furthermore, wood as a basic building material is no longer limited to square shapes; curved and irregularly shaped pieces are increasingly in demand in the market.

[0003] For example, patent document CN221048637U discloses a grooving device for arc-shaped grooves in timber, including an operating table and a grooving mechanism. Several evenly arranged grid grooves are arranged through the center of the operating table, and notches are provided at the four corners of the top surface of the operating table. A transverse guide groove is provided at the upper and lower positions of the top surface of the operating table near the notches. Two horizontally reciprocating first guide bases are provided on the inner wall of the guide grooves, and a guide mechanism is fixedly connected to the top surface of the first guide bases. The grooving mechanism is respectively located on the inner wall of the guide mechanism, and a dust removal mechanism is provided on the left and right sides of the grooving mechanism. Through the setting of the sawdust processing mechanism, the above device can powerfully suction and collect sawdust dust, avoiding dust flying everywhere during use. While providing a good working environment for the operator, it can also quickly clean the equipment through the sawdust collection bin, making it more convenient. In the existing technology, in the process of slotting arc grooves in timber, in order to ensure that the timber does not shift during the slotting process, a fixed clamping mechanism is required to position the timber. Furthermore, since the timber has different shapes and specifications, the fixed clamping mechanism should have the function of adaptive clamping according to the shape in order to improve clamping efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a grooving device for arc-shaped grooves in timber in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A grooving device for arc-shaped grooves in timber includes a workbench with a grooving mechanism below it. The workbench includes a table with a lifting and adjusting assembly on one side. The grooving mechanism includes a longitudinal drive assembly and a milling cutter drive assembly. The lifting and adjusting assembly has a positioning and clamping mechanism, which includes a top roller bracket above the table. Two side roller brackets are symmetrically arranged on both sides of the top roller bracket. Two symmetrically arranged L-shaped hydraulic pipes are fixedly connected to the top of the top roller bracket. A first piston rod is slidably and sealed at the upper end of the hydraulic pipe. The other end of the first piston rod is fixedly connected to the lifting and adjusting assembly, and a second piston rod is slidably and sealed at the other end of the hydraulic pipe. Hydraulic oil is injected between the second piston rod and the first piston rod. A drive plate is fixedly connected to the top of the second piston rod. Two V-shaped guide grooves are formed on the drive plate. Two protrusions are provided on the side roller brackets, and the protrusions on the side roller brackets are slidably connected to the guide grooves.

[0007] Preferably, a guide telescopic rod is fixedly connected between the top roller support and the side roller support. Several symmetrically arranged top pressure rollers are rotatably connected to both sides of the lower end of the top roller support, and several side pressure rollers are rotatably connected to the bottom of the side roller support. The top pressure rollers and the side pressure rollers are perpendicular to each other and staggered.

[0008] Preferably, the workbench also includes several conveying rollers that are rotatably connected to the table, the conveying rollers are connected to each other by a synchronous belt, a sawdust collection box is fixedly connected to the bottom of the table, a drawer is slidably connected to the lower end of the sawdust collection box, a drive pulley is rotatably connected to the sawdust collection box, and the drive pulley is connected to the conveying rollers by a synchronous belt.

[0009] Preferably, the lifting adjustment assembly includes a side support column fixedly connected to the rear side of the table, a lifting screw rotatably connected to the side support column, a lifting motor fixedly connected to the top of the side support column, the output end of the lifting motor fixedly connected to the lifting screw, a longitudinal frame slidably connected to the side support column, the longitudinal frame threadedly connected to the lifting screw, a first screw rotatably connected to the middle of the longitudinal frame, a sliding block threadedly connected to the first screw, the sliding block slidably connected to the longitudinal frame, the sliding block fixedly connected to the top of the first piston rod, and an operating handle fixedly connected to one end of the first screw.

[0010] Preferably, the longitudinal drive assembly includes a power motor fixedly connected to the sawdust collection box, a first prism fixedly connected to the output end of the power motor, the first prism being rotatably connected to the sawdust collection box, the first prism being fixedly connected to the drive pulley, a guide rail provided on one side of the first prism being fixedly connected to the sawdust collection box, a protective shell provided on the other side of the first prism being fixedly connected to the sawdust collection box, a longitudinal motor fixedly connected to one end of the protective shell, a second screw fixedly connected to the output end of the longitudinal motor, the second screw being rotatably connected to the protective shell, a grinding bracket sleeved on the first prism, one side of the grinding bracket being slidably connected to the guide rail, and the other end of the grinding bracket being threadedly connected to the second screw.

[0011] Preferably, the milling cutter drive assembly includes an active bevel gear slidably connected to a first prism, an active bevel gear rotatably connected to a grinding bracket, a driven bevel gear rotatably connected to the top of the grinding bracket, the active bevel gear and the driven bevel gear meshing and orthogonally arranged, a second prism fixedly connected to the top of the driven bevel gear, a tool connecting frame slidably connected to the second prism, a slotting milling cutter fixedly connected to the top of the tool connecting frame, and an electric telescopic rod fixedly connected to the top of the grinding bracket. The output end of the electric telescopic rod is rotatably connected to the tool connecting frame through a connecting plate.

[0012] The beneficial effect is that, through the setting of the positioning and clamping mechanism, when the top roller support is lowered by the sliding block, after the top pressure roller contacts the top of the timber, the top roller support cannot move. At this time, the sliding block continues to descend, pressing the first piston rod to move. The first piston rod drives the second piston rod to move through hydraulic oil. The second piston rod drives the drive plate to move. The drive plate drives the side roller support to move inward through the guide groove to clamp the timber. In this way, the timber is automatically clamped during the descent of the sliding block, avoiding the timber from shifting during the grooving process.

[0013] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a perspective view of a timber arc groove grooving device according to the present invention;

[0016] Figure 2 This is a top view of the arc-shaped groove cutting device for timber according to this utility model;

[0017] Figure 3 This is a left view of the arc-shaped groove cutting device for timber according to this utility model;

[0018] Figure 4 This is a perspective view of the relative positions of the longitudinal frame and the top roller support of the arc-shaped groove cutting device for timber according to this utility model;

[0019] Figure 5 This is a front sectional view of the positioning and clamping mechanism of the arc-shaped groove grooving device for timber described in this utility model;

[0020] Figure 6 This is a three-dimensional structural view of the positioning and clamping mechanism of the arc-shaped groove grooving device for timber described in this utility model;

[0021] Figure 7 This is a front view of the workbench of the arc-shaped groove cutting device for timber described in this utility model;

[0022] Figure 8 This is a perspective view of the relative positions of the grooving mechanism and the conveying roller in the arc-shaped groove grooving device for timber according to this utility model;

[0023] Figure 9 This is a right-side sectional view of the grooving mechanism of the arc-shaped groove grooving device for timber described in this utility model.

[0024] The annotations in the attached figures are explained as follows:

[0025] 101. Table; 102. Conveyor roller; 103. Wood chip collection box; 104. Side support column; 105. Drawer; 106. Drive pulley; 107. Lifting motor; 108. Lifting screw; 109. Longitudinal frame; 110. First screw; 111. Sliding block; 112. Operating handle; 201. Power motor; 202. Guide rail; 203. First prism; 204. Longitudinal motor; 205. Protective shell; 206. Second screw; 207. 208. Grinding bracket; 209. Driven bevel gear; 210. Second prism; 211. Tool connecting bracket; 212. Grooving cutter; 213. Electric telescopic rod; 301. Top roller bracket; 302. Top pressure roller; 303. Side roller bracket; 304. Side pressure roller; 305. Guide telescopic rod; 306. First piston rod; 307. Hydraulic pipe; 308. Second piston rod; 309. Drive plate; 310. Guide groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] like Figures 1-9As shown, a grooving device for arc-shaped grooves in timber includes a workbench with a grooving mechanism positioned below it. The workbench includes a table 101, and a lifting and adjusting assembly is located on one side of the table 101. The grooving mechanism includes a longitudinal drive assembly and a milling cutter drive assembly. The longitudinal drive assembly drives the milling cutter drive assembly to move longitudinally, and the milling cutter drive assembly drives the grooving milling cutter 212 to rotate during the longitudinal movement. A positioning and clamping mechanism is provided on the lifting and adjusting assembly. The positioning and clamping mechanism includes a top roller bracket 301 positioned above the table 101, and two side roller brackets 303 symmetrically arranged on both sides of the top roller bracket 301. A guide telescopic rod 305 is fixedly connected between the top roller support 301 and the side roller support 303. The guide telescopic rod 305 ensures that the side roller support 303 does not deviate in direction during movement. Two symmetrically arranged L-shaped hydraulic pipes 307 are welded to the top of the top roller support 301. A first piston rod 306 is slidably and sealed at the upper end of each hydraulic pipe 307. The other end of the first piston rod 306 is fixedly connected to a lifting adjustment assembly. A second piston rod 308 is slidably and sealed at the other end of each hydraulic pipe 307. Hydraulic oil is filled between the second piston rod 308 and the first piston rod 306. The top of the second piston rod 308... A drive plate 309 is fixedly connected, and two V-shaped guide grooves 310 are formed on the drive plate 309. The tips of the V-shape formed by the two guide grooves 310 face the hydraulic pipe 307. Two protrusions are provided on the side roller bracket 303, and the protrusions on the side roller bracket 303 are slidably connected to the guide grooves 310. Several symmetrically arranged top pressure rollers 302 are rotatably connected to the lower ends of the top roller bracket 301, and several side pressure rollers 304 are rotatably connected to the bottom of the side roller bracket 303. The top pressure rollers 302 and the side pressure rollers 304 are perpendicular to each other and staggered. The sliding block 111 descends to drive the top roller. As the support 301 descends, the top roller support 301 drives the top pressure roller 302 to contact the top of the timber. At this time, the top roller support 301 cannot move, while the sliding block 111 continues to descend. The sliding block 111 presses the first piston rod 306 to retract into the hydraulic pipe 307. The first piston rod 306 pushes the second piston rod 308 to extend through the hydraulic oil. The second piston rod 308 drives the drive plate 309 to move. The drive plate 309 drives the two side roller supports 303 to retract and clamp the sides of the timber through the guide groove 310. In this way, the positioning and clamping mechanism automatically clamps the timber during the descent process, avoiding the timber from shifting during the grooving process.

[0030] The workbench also includes several conveying rollers 102 rotatably connected to the table 101. The surface of the conveying rollers 102 is covered with a layer of rubber, and the outer surface of the rubber layer is patterned. The several conveying rollers 102 are connected to each other by a synchronous belt. A sawdust collection box 103 is fixedly connected to the bottom of the table 101. A drawer 105 is slidably connected to the lower end of the sawdust collection box 103. A drive pulley 106 is rotatably connected to the sawdust collection box 103. The drive pulley 106 is connected to the conveying rollers 102 by a synchronous belt. The drive pulley 106 drives the several conveying rollers 102 to rotate through the synchronous belt, thus realizing the function of wood conveying. A certain gap is provided between the several conveying rollers 102, so that the sawdust during the grooving process can fall into the sawdust collection box 103 under the action of gravity. The drawer 105 is designed to facilitate the cleaning of the sawdust collection box 103 by the staff.

[0031] The height adjustment assembly includes a side support column 104 welded to the rear side of the table 101. A lifting screw 108 is rotatably connected to the side support column 104. A lifting motor 107 is bolted to the top of the side support column 104. The output end of the lifting motor 107 is fixedly connected to the lifting screw 108. A longitudinal frame 109 is slidably connected to the side support column 104. The longitudinal frame 109 is threadedly connected to the lifting screw 108. A first screw 110 is rotatably connected to the middle of the longitudinal frame 109. A sliding block 111 is threadedly connected to the first screw 110. The sliding block 111 is slidably connected to the longitudinal frame 109. The first screw 110 is fixedly connected to the top of the first piston rod 306, and one end of the first screw 110 is fixedly connected to the operating handle 112. The lifting motor 107 drives the lifting screw 108 to rotate. The lifting screw 108 drives the longitudinal frame 109 to rise and fall through the threaded connection. The longitudinal frame 109 drives the sliding block 111 to rise and fall. The sliding block 111 drives the positioning and clamping mechanism to rise and fall. The operator can adjust the position of the sliding block 111 by rotating the operating handle 112. The operating handle 112 drives the first screw 110 to rotate. The first screw 110 drives the sliding block 111 to move axially along the first screw 110 through the threaded connection.

[0032] The longitudinal drive assembly includes a power motor 201 bolted to the sawdust collection box 103. A first prism 203 is fixedly connected to the output end of the power motor 201. The first prism 203 is rotatably connected to the sawdust collection box 103 and fixedly connected to the drive pulley 106. A guide rail 202 is provided on one side of the first prism 203 to prevent the sanding bracket 207 from shifting in other directions during longitudinal movement. The guide rail 202 is fixedly connected to the sawdust collection box 103. A protective shell 205 is provided on the other side of the first prism 203 and fixedly connected to the sawdust collection box 103. The protective shell 205 prevents sawdust from falling onto the second screw 206 and creating a negative impact. The protective shell 205 is fixedly connected to a longitudinal motor 204 at one end, and a second screw 206 is fixedly connected to the output end of the longitudinal motor 204. The second screw 206 is rotatably connected to the protective shell 205. A grinding bracket 207 is sleeved on the first prism 203. One side of the grinding bracket 207 is slidably connected to the guide rail 202, and the other end of the grinding bracket 207 is threadedly connected to the second screw 206. The longitudinal motor 204 drives the second screw 206 to rotate, and the second screw 206 drives the grinding bracket 207 to move longitudinally through the threaded connection. The power motor 201 drives the first prism 203 to rotate, and the second screw 206 drives the drive pulley 106 to rotate. The drive pulley 106 drives several conveyor rollers 102 to rotate through the synchronous belt.

[0033] The milling cutter drive assembly includes a driving bevel gear 208 slidably connected to a first prism 203, a driving bevel gear 208 rotatably connected to a grinding bracket 207, a driven bevel gear 209 rotatably connected to the top of the grinding bracket 207, the driving bevel gear 208 and the driven bevel gear 209 meshing and orthogonally arranged, a second prism 210 fixedly connected to the top of the driven bevel gear 209, a tool connecting frame 211 slidably connected to the second prism 210, a grooving milling cutter 212 fixedly connected to the top of the tool connecting frame 211, and an electric telescopic rod 213 fixedly connected to the top of the grinding bracket 207. The output end of the electric telescopic rod 213 is rotatably connected to the tool connecting frame 211 via a connecting plate. The first prism 203 drives the active bevel gear 208 to rotate, the active bevel gear 208 drives the driven bevel gear 209 to rotate, the driven bevel gear 209 drives the second prism 210 to rotate, the second prism 210 drives the tool connecting frame 211 to rotate, and the tool connecting frame 211 drives the grooving cutter 212 to rotate. In this way, the grooving cutter 212 can be kept rotating during the longitudinal movement of the grinding bracket 207. The electric telescopic rod 213 drives the tool connecting frame 211 to rise and fall through the connecting plate. The sliding cooperation between the second prism 210 and the tool connecting frame 211 ensures that the grooving cutter 212 keeps rotating during the rising and falling process. The rising and falling of the grooving cutter 212 can control the depth of the grooving.

[0034] Working principle: The worker places the timber on the table 101. The power motor 201 drives the first prism 203 to rotate, and the second screw 206 drives the drive pulley 106 to rotate. The drive pulley 106 drives several conveyor rollers 102 to rotate via a synchronous belt, thus realizing the function of conveying the timber. The first prism 203 drives the drive bevel gear 208 to rotate, the drive bevel gear 208 drives the driven bevel gear 209 to rotate, the driven bevel gear 209 drives the second prism 210 to rotate, and the second prism 210 drives the tool connecting frame 211 to rotate. The tool connecting frame 211 carries... The grooving cutter 212 rotates, thus maintaining its rotation during the longitudinal movement of the grinding bracket 207. The electric telescopic rod 213 drives the tool connecting frame 211 to rise and fall via the connecting plate. The sliding engagement between the second prism 210 and the tool connecting frame 211 ensures that the grooving cutter 212 maintains its rotation during the rising and falling process. The rising and falling of the grooving cutter 212 controls the grooving depth. The longitudinal motor 204 drives the second screw 206 to rotate. The second screw 206 drives the grinding bracket 207 and the grooving cutter 212 on it to move longitudinally via a threaded connection. The lowering motor 107 drives the lifting screw 108 to rotate. The lifting screw 108 drives the longitudinal frame 109 to rise and fall via a threaded connection. The longitudinal frame 109 drives the sliding block 111 to rise and fall. The sliding block 111 drives the positioning and clamping mechanism to rise and fall. The sliding block 111 descends, causing the top roller bracket 301 to descend. The top roller bracket 301 drives the top pressure roller 302 to contact the top of the timber. At this time, the top roller bracket 301 cannot move, while the sliding block 111 continues to descend. The sliding block 111 presses the first piston rod 306 to retract into the hydraulic pipe 307. The first piston rod 306 is controlled by hydraulic oil. The second piston rod 308 is pushed out, which drives the drive plate 309 to move. The drive plate 309 drives the two side roller supports 303 to retract and clamp the sides of the wood through the guide groove 310. This achieves automatic clamping of the wood during the descent of the positioning and clamping mechanism, preventing the wood from shifting during the grooving process. The operator can adjust the position of the sliding block 111 by rotating the operating handle 112. The operating handle 112 drives the first screw 110 to rotate. The first screw 110 drives the sliding block 111 to move axially along the first screw 110 through a threaded connection.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for slotting a wood square arc-shaped groove, comprising a workbench, wherein a slotting mechanism is arranged below the workbench, characterized in that: The workbench includes a table (101), and a lifting adjustment assembly is provided on one side of the table (101). The grooving mechanism includes a longitudinal drive assembly and a milling cutter drive assembly. A positioning and clamping mechanism is provided on the lifting adjustment assembly. The positioning and clamping mechanism includes a top roller bracket (301) located above the table (101). Two side roller brackets (303) are symmetrically arranged on both sides of the top roller bracket (301). Two symmetrically arranged L-shaped hydraulic pipes (307) are fixedly connected to the top of the top roller bracket (301). A first piston rod is slidably connected to the upper end of the hydraulic pipes (307). 306), the other end of the first piston rod (306) is fixedly connected to the lifting adjustment assembly, the other end of the hydraulic pipe (307) is slidably connected to the second piston rod (308), hydraulic oil is injected between the second piston rod (308) and the first piston rod (306), the top of the second piston rod (308) is fixedly connected to the drive plate (309), the drive plate (309) has two V-shaped guide grooves (310), the side roller bracket (303) has two protrusions, and the protrusions on the side roller bracket (303) are slidably connected to the guide grooves (310).

2. A device for grooving a curved slot in a timber according to claim 1, wherein: A guide telescopic rod (305) is fixedly connected between the top roller bracket (301) and the side roller bracket (303). Several symmetrically arranged top pressure rollers (302) are rotatably connected to both sides of the lower end of the top roller bracket (301). Several side pressure rollers (304) are rotatably connected to the bottom of the side roller bracket (303). The top pressure rollers (302) and the side pressure rollers (304) are perpendicular to each other and staggered.

3. A device for grooving a curved slot in a timber according to claim 1, wherein: The workbench also includes several conveying rollers (102) rotatably connected to the table (101). The several conveying rollers (102) are connected to each other by a synchronous belt. A sawdust collection box (103) is fixedly connected to the bottom of the table (101). A drawer (105) is slidably connected to the lower end of the sawdust collection box (103). A drive pulley (106) is rotatably connected to the sawdust collection box (103). The drive pulley (106) is connected to the conveying rollers (102) by a synchronous belt.

4. A device for grooving a curved slot in a timber according to claim 1, characterised in that: The lifting and adjusting assembly includes a side support column (104) fixedly connected to the rear side of the table (101), a lifting screw (108) rotatably connected to the side support column (104), a lifting motor (107) fixedly connected to the top of the side support column (104), the output end of the lifting motor (107) fixedly connected to the lifting screw (108), a longitudinal frame (109) slidably connected to the side support column (104), the longitudinal frame (109) threadedly connected to the lifting screw (108), a first screw (110) rotatably connected to the middle of the longitudinal frame (109), a sliding block (111) threadedly connected to the first screw (110), the sliding block (111) slidably connected to the longitudinal frame (109), the sliding block (111) fixedly connected to the top of the first piston rod (306), and an operating handle (112) fixedly connected to one end of the first screw (110).

5. A device for grooving a curved slot in a timber according to claim 3, wherein: The longitudinal drive assembly includes a power motor (201) fixedly connected to the wood chip collection box (103). A first prism (203) is fixedly connected to the output end of the power motor (201). The first prism (203) is rotatably connected to the wood chip collection box (103). The first prism (203) is fixedly connected to a drive pulley (106). A guide rail (202) is provided on one side of the first prism (203), and the guide rail (202) is fixedly connected to the wood chip collection box (103). A protective shell (205) is provided on the other side of the first prism (203). The protective shell (205) is fixedly connected to the sawdust collection box (103). A longitudinal motor (204) is fixedly connected to one end of the protective shell (205). A second screw (206) is fixedly connected to the output end of the longitudinal motor (204). The second screw (206) is rotatably connected to the protective shell (205). A sanding bracket (207) is fitted on the first prism (203). One side of the sanding bracket (207) is slidably connected to the guide rail (202). The other end of the sanding bracket (207) is threadedly connected to the second screw (206).

6. A device for slotting a wood batten arcuate channel according to claim 5 wherein: The milling cutter drive assembly includes an active bevel gear (208) slidably connected to the first prism (203), the active bevel gear (208) being rotatably connected to the grinding bracket (207), a driven bevel gear (209) being rotatably connected to the top of the grinding bracket (207), the active bevel gear (208) and the driven bevel gear (209) meshing and orthogonally arranged, a second prism (210) being fixedly connected to the top of the driven bevel gear (209), a tool connecting frame (211) being slidably connected to the second prism (210), a slotting milling cutter (212) being fixedly connected to the top of the tool connecting frame (211), an electric telescopic rod (213) being fixedly connected to the top of the grinding bracket (207), and the output end of the electric telescopic rod (213) being rotatably connected to the tool connecting frame (211) through a connecting plate.

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