Drilling and milling head for forming V-shaped groove in concrete

Abstract

The utility model discloses a drilling and milling head for forming a V-shaped groove in concrete, which comprises a cylindrical base body, the upper surface of the base body is integrally connected with the base body and is provided with a circular-truncated-cone-shaped cutter tooth base body, the lower bottom surface of the circular truncated cone of the cutter tooth base body and the upper surface of the base body are integrally arranged, and the diameter of the lower bottom surface of the circular truncated cone of the cutter tooth base body is the same as that of the base body. The diameter of the upper bottom face of an upper circular truncated cone of the cutter tooth base body is smaller than that of the lower bottom face of the cutter tooth base body, a plurality of spiral grooves are evenly formed in the side face of the circular truncated cone of the cutter tooth base body in the clockwise direction to serve as cutter teeth, and a plurality of water guide holes are evenly formed in the bottom face of the cutter tooth base body and vertically extend upwards from the bottom face of the cutter tooth base body to the side face of the circular truncated cone of the cutter tooth base body. The cutting device solves the problems that in the prior art, dust is large in the cutting process of a linear slotting piece, and the cut root is rough.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of concrete grooving tool, and relates to a drill milling head for V-shaped groove of concrete. BACKGROUND

[0002] In the process of infrastructure construction, it is often necessary to open a groove with a specific shape on the surface of concrete in the construction of cable, pipeline installation, drainage system of water conservancy project, and it is necessary to accurately groove the surface of concrete in structural reinforcement, such as V-shaped groove which can be used for inserting reinforcing materials or special treatment.

[0003] The existing concrete grooving tool is mostly a straight line cutting tool, such as Figure 1 As shown in the cutting schematic diagram of the ordinary straight line grooving piece, for some special application scenarios requiring V-shaped groove, such as drainage system, special type of structural joint or decorative cutting, there is no solution, and the straight line grooving piece generates a lot of dust in the cutting process, and because several grooving pieces are used together when the straight line grooving piece grooves, the root of the groove is rough and the error is large. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a drill milling head for V-shaped groove of concrete, solving the problems of large dust in the cutting process of the straight line grooving piece and rough cutting root in the prior art.

[0005] The utility model adopts the technical scheme that the drill milling head for V-shaped groove of concrete comprises a cylindrical base body, a circular truncated cone shaped cutter tooth base body is arranged on the upper surface of the base body in an integrated manner, the lower bottom surface of the circular truncated cone of the cutter tooth base body is arranged in an integrated manner with the upper surface of the base body, the diameter of the lower bottom surface of the circular truncated cone of the cutter tooth base body is same with the diameter of the base body, the diameter of the upper bottom surface of the circular truncated cone of the cutter tooth base body is smaller than the diameter of the lower bottom surface, a plurality of spiral grooves are arranged on the side surface of the circular truncated cone of the cutter tooth base body in an even manner along the clockwise direction and are used as cutter teeth, a plurality of water guide holes are arranged on the bottom surface of the cutter tooth base body in an even manner, and the water guide holes vertically extend from the bottom surface of the cutter tooth base body to the side surface of the circular truncated cone of the cutter tooth base body.

[0006] The utility model is characterized in that:

[0007] The position, where the spiral groove is not arranged on the side surface of the circular truncated cone of the cutter tooth base body, is also plated with diamond grits in an even manner.

[0008] The lower surface of the base body is connected with the base body in an integrated manner and is provided with an outer hexagonal nut, the axis of the outer hexagonal nut is coincident with the axis of the base body, and the axis of the base body is coincident with the axis of the cutter tooth base body.

[0009] The inner threaded hole with the same diameter and coaxial with the inner threaded hole of the outer hexagonal nut is arranged in the base body.

[0010] The plurality of water guide holes are evenly distributed on the bottom surface of the cutter tooth base body and on the circumference of a concentric circle with the bottom surface of the cutter tooth base body, and the diameter of the circumference on which the water guide holes are distributed is smaller than the diameter of the internal thread hole of the base body.

[0011] The water guide holes are evenly distributed at an angle of 120° on the bottom surface of the cutter tooth base body.

[0012] The circular truncated cone side surface of the cutter tooth base body is evenly provided with three spiral grooves as cutter teeth in a clockwise direction, and the spiral angle of the spiral grooves is 45°.

[0013] The lower bottom surface of the circular truncated cone of the cutter tooth base body has a diameter of 60-160 mm, the upper bottom surface of the circular truncated cone of the cutter tooth base body has a diameter of 10 mm, the height of the circular truncated cone of the cutter tooth base body is 50-150 mm, and the included angle between the generatrix of the circular truncated cone of the cutter tooth base body and the shaft is 15-80°.

[0014] The base body and the external hexagonal nut are fixed on the output shaft of the slotting machine in a threaded connection manner.

[0015] The base body, the cutter tooth base body and the external hexagonal nut are all made of carbon structural steel.

[0016] The utility model discloses the beneficial effects are:

[0017] The utility model discloses the design of cutter tooth base body and cutter tooth shape and cutting angle can carry out accurate slotting to the place that needs V type slotting, and the slot is integrally formed, and because the front end has cutter tooth and the high strength of the diamond plating outer surface, therefore, can solve the problem of rough root, and the cooling water is supplied to the drill milling head in the cutting process through the central hole, and the chip is removed through the water tank, guarantees the smoothness of cutting surface, and there is no dust in the working process, and the error is small.

[0018] The use of high-strength material improves the service life of the drill milling head, and the drill milling head is light and portable and easy to disassemble and assemble. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of linear cutting in the prior art.

[0020] Figure 2 It is a structural schematic diagram of the drill milling head for opening V-shaped slots in concrete of the utility model;

[0021] Figure 3 It is a front view of the drill milling head for opening V-shaped slots in concrete of the utility model;

[0022] Figure 4 It is Figure 3 the bottom view of

[0023] Figure 5 It is Figure 3 the top view of

[0024] Figure 6 is Figure 3 a sectional view;

[0025] Figure 7 is the drilling and milling head installation schematic diagram for the V-shaped groove of the concrete of the utility model;

[0026] Figure 8 is the working schematic diagram of the drilling and milling head for the V-shaped groove of the concrete of the utility model;

[0027] Figure 9 is the structural schematic diagram of the slotting cutting machine head of the slotting machine applied in embodiment 7;

[0028] Figure 10 is Figure 9 a back structure schematic diagram;

[0029] Figure 11 is the structural schematic diagram of the feed drive mechanism in the slotting cutting machine head applied in embodiment 7.

[0030] In the figure: 1. cutter tooth, 2. water guide hole, 3. base body, 4. cutter tooth base body, 5. outer hexagonal nut;

[0031] 1-1. main motor, 2-1. speed reducer box, 4-1. box body support plate, 5-1. drilling and milling head, 6-1. stand column, 7-1. feed motor, 9-1. tool path motor, 13-1. tool path gear, 14-1. feed gear, 15-1. feed rack, 16-1. feed frame, 18-1. tool path base, 19-1. tool path rack, 20-1. guide rail body, 27-1. worm, 28-1. worm wheel. DETAILED DESCRIPTION

[0032] The utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0033] Embodiment 1

[0034] The utility model discloses a drilling and milling head for the V-shaped groove of the concrete, its structure as shown in Figures 1-6 Fig. 1, including cylindrical base body 3, the upper surface of base body 3 is integrally connected with base body 3 and is provided with circular truncated cone shaped cutter tooth base body 4, the lower bottom surface of the circular truncated cone of cutter tooth base body 4 is integrally arranged with the upper surface of base body 3 and the diameter of the lower bottom surface of the circular truncated cone of cutter tooth base body 4 is same with the diameter of base body 3, the diameter of the upper bottom surface of the circular truncated cone of cutter tooth base body 4 is less than the diameter of the lower bottom surface, the circular truncated cone side surface of cutter tooth base body 4 is evenly provided with a plurality of spiral grooves as cutter tooth 1 along the clockwise direction, the bottom surface of cutter tooth base body 4 is evenly provided with a plurality of water guide holes 2, and the water guide holes 2 vertically extend from the bottom surface of cutter tooth base body 4 to the circular truncated cone side surface of cutter tooth base body 4.

[0035] The lower surface of the base 3 is integrally connected with an outer hexagonal nut 5, the axis of the outer hexagonal nut 5 coincides with the axis of the base 3, and the axis of the base 3 coincides with the axis of the cutter tooth base 4.

[0036] An inner threaded hole coaxial with the inner threaded hole of the outer hexagonal nut 5 is formed in the base 3.

[0037] In use, as shown in the figure, the base 3 and the outer hexagonal nut 5 are fixed on the output shaft of the slotting machine through threaded connection, so that the V-shaped drill milling head can be fixed on the slotting machine. Figures 7-8

[0038] The utility model discloses a drill milling head for opening V-shaped groove in concrete, which has the advantages that the removal rate of dust reaches 98% after water is passed through the water guide hole in the cutter tooth base 4 in the actual working process, and the unique cutter tooth design makes the drill milling head applicable to various places and capable of accurately opening slots.

[0039] Embodiment 2

[0040] The utility model discloses a drill milling head for opening V-shaped groove in concrete, which has the advantages that the removal rate of dust reaches 98% after water is passed through the water guide hole in the cutter tooth base 4 in the actual working process, and the unique cutter tooth design makes the drill milling head applicable to various places and capable of accurately opening slots. Figure 1 The lower surface of the base 3 is integrally connected with an outer hexagonal nut 5, the axis of the outer hexagonal nut 5 coincides with the axis of the base 3, and the axis of the base 3 coincides with the axis of the cutter tooth base 4.

[0041] An inner threaded hole coaxial with the inner threaded hole of the outer hexagonal nut 5 is formed in the base 3.

[0042] The base 3, the cutter tooth base 4 and the outer hexagonal nut 5 are all made of carbon structural steel, which guarantees the strength and reduces the weight to the maximum extent, and the position of the side surface of the circular table of the cutter tooth base 4, which is not provided with the spiral groove, is uniformly plated with diamond grits, so that the drill milling head is more rapid in the working process and the working surface is smoother and does not need to be treated again after the working process.

[0043] In use, as shown in the figure, the base 3 and the outer hexagonal nut 5 are fixed on the output shaft of the slotting machine through threaded connection, so that the V-shaped drill milling head can be fixed on the slotting machine.

[0044] Figures 7-8 ​​​

[0045] The utility model discloses a water guide hole is opened on the cutter tooth base body 4, and the removal rate of dust reaches 98% after water is passed in the actual working process, and due to the unique cutter tooth design, it can cope with various places and carry out accurate grooving.

[0046] Example 3

[0047] The utility model discloses a drill and mill head for opening V-shaped groove of concrete, and the structure is as shown in Figure 1 The utility model discloses a drill and mill head for opening V-shaped groove of concrete, and the structure is as shown in

[0048] The lower surface of the base body 3 is integrally connected with the base body 3 and provided with an outer hexagonal nut 5, the axis of the outer hexagonal nut 5 coincides with the axis of the base body 3, and the axis of the base body 3 coincides with the axis of the cutter tooth base body 4.

[0049] The base body 3 is provided with an inner thread hole coaxial with the inner thread hole of the outer hexagonal nut 5.

[0050] The base body 3, the cutter tooth base body 4 and the outer hexagonal nut 5 are all made of carbon structural steel, which ensures the strength and reduces the weight to the maximum extent, and the side surface of the cutter tooth base body 4 is evenly plated with diamond sand at the position without spiral groove, so that the working process is faster and the working surface is smoother, and the working surface does not need to be treated again after the work is completed.

[0051] In use, as shown in Figures 7-8 The base body 3 and the outer hexagonal nut 5 are fixed on the output shaft of the grooving machine through threaded connection, so that the V-shaped drill and mill head is fixed on the grooving machine.

[0052] The plurality of water guide holes 2 are evenly distributed on the bottom surface of the cutter tooth base body 4 and on the circumferences of the concentric circles of the bottom surface of the cutter tooth base body 4, and the diameters of the circumferences where the water guide holes 2 are distributed are smaller than the diameter of the inner thread hole of the base body 3, so that the water guide holes 2 are leaked in the inner thread hole of the base body 3 and flow out after water is passed, the water guide hole is opened on the cutter tooth base body 4, and the removal rate of dust reaches 98% after water is passed in the actual working process, and due to the unique cutter tooth design, it can cope with various places and carry out accurate grooving.

[0053] Example 4

[0054] The utility model is used for the drilling and milling head of V-shaped groove of concrete, and its structure is as shown in the figure Figure 1 The utility model discloses a drilling and milling head for V-shaped groove of concrete, and its structure is as shown in the figure

[0055] The lower surface of the base body 3 is integrally connected with the base body 3 and provided with an outer hexagonal nut 5, the axis of the outer hexagonal nut 5 coincides with the axis of the base body 3, and the axis of the base body 3 coincides with the axis of the blade tooth base body 4.

[0056] The inner thread hole coaxial with the inner thread hole diameter of the outer hexagonal nut 5 is formed in the base body 3.

[0057] The base body 3, the blade tooth base body 4 and the outer hexagonal nut 5 are all made of carbon structural steel, which guarantees the strength and reduces the weight to the maximum extent, the position of the blade tooth base body 4 without spiral groove is also uniformly plated with diamond sand, so that the working process is more efficient, the working surface is smoother, and the working surface does not need to be treated again after the work is completed.

[0058] In use, as shown in the figure Figures 7-8 The base body 3 and the outer hexagonal nut 5 are fixed on the output shaft of the slotting machine through threaded connection, so that the V-shaped drilling and milling head can be fixed on the slotting machine.

[0059] The three water guide holes 2 are uniformly distributed on the bottom surface of the blade tooth base body 4 and are concentric with the bottom surface of the blade tooth base body 4, and the diameter of the circle where the water guide holes 2 are distributed is smaller than the diameter of the inner thread hole of the base body 3, so that the water guide holes 2 can be leaked in the inner thread hole of the base body 3 and flow out conveniently, the removal rate of dust after water passing in the actual working process reaches 98%, and the unique blade tooth design can be used for precise slotting in various places.

[0060] Example 5

[0061] The utility model is used for the drilling and milling head of V-shaped groove of concrete, and its structure is as shown in the figure Figure 1As shown, it includes a cylindrical base 3, and a frustum-shaped cutting tooth base 4 integrally connected to the upper surface of the base 3. The lower bottom surface of the frustum of the cutting tooth base 4 is integrally formed with the upper surface of the base 3, and the diameter of the lower bottom surface of the frustum of the cutting tooth base 4 is the same as the diameter of the base 3. The diameter of the upper bottom surface of the frustum of the cutting tooth base 4 is smaller than the diameter of the lower bottom surface. Three spiral grooves are evenly provided on the side of the frustum of the cutting tooth base 4 in a clockwise direction as cutting teeth 1. The spiral angle of the spiral grooves is 45°. Multiple water guide holes 2 are evenly provided on the bottom surface of the cutting tooth base 4. The water guide holes 2 extend vertically upward from the bottom surface of the cutting tooth base 4 to the side of the frustum of the cutting tooth base 4.

[0062] An external hexagonal nut 5 is integrally connected to the lower surface of the base 3. The axis of the external hexagonal nut 5 coincides with the axis of the base 3, and the axis of the base 3 coincides with the axis of the toothed base 4.

[0063] The base 3 has an internal thread hole with the same diameter as the internal thread hole of the external hexagonal nut 5 and is coaxial.

[0064] The base 3, the tooth base 4, and the external hexagonal nut 5 are all made of carbon structural steel. While ensuring their strength, their weight is reduced to the greatest extent. The side of the frustum of the tooth base 4 without the spiral groove is uniformly coated with diamond grit, which makes it faster in the working process and the working surface smoother, eliminating the need for secondary treatment of the working surface after the work is completed.

[0065] Three water guide holes 2 are evenly distributed at a 120° angle on the bottom surface of the toothed base 4. The three water guide holes 2 are evenly distributed on the bottom surface of the toothed base 4 and are concentric circles with the bottom surface of the toothed base 4. The diameter of the circumference of the distribution of the water guide holes 2 is smaller than the diameter of the internal thread hole of the base 3. The water guide holes 2 are inserted into the internal thread hole of the base 3 to facilitate the flow out after water is introduced. By opening water guide holes on the toothed base 4, the dust removal rate reaches 98% after water is introduced during actual operation. Due to its unique tooth design, it can cope with various places and perform precise grooving.

[0066] Example 6

[0067] This utility model relates to a drill and milling head for creating V-grooves in concrete, and its structure is as follows: Figure 1 As shown, it includes a cylindrical base 3, and a frustum-shaped cutting tooth base 4 integrally connected to the upper surface of the base 3. The lower bottom surface of the frustum of the cutting tooth base 4 is integrally formed with the upper surface of the base 3, and the diameter of the lower bottom surface of the frustum of the cutting tooth base 4 is the same as the diameter of the base 3. The diameter of the upper bottom surface of the frustum of the cutting tooth base 4 is smaller than the diameter of the lower bottom surface. Three spiral grooves are evenly provided on the side of the frustum of the cutting tooth base 4 in a clockwise direction as cutting teeth 1. The spiral angle of the spiral grooves is 45°. Multiple water guide holes 2 are evenly provided on the bottom surface of the cutting tooth base 4. The water guide holes 2 extend vertically upward from the bottom surface of the cutting tooth base 4 to the side of the frustum of the cutting tooth base 4.

[0068] An external hexagonal nut 5 is integrally connected to the lower surface of the base 3. The axis of the external hexagonal nut 5 coincides with the axis of the base 3, and the axis of the base 3 coincides with the axis of the toothed base 4.

[0069] The base 3 has an internal thread hole with the same diameter as the internal thread hole of the external hexagonal nut 5 and is coaxial.

[0070] The diameter of the lower base of the 4-cylinder base is 60-160mm, the diameter of the upper base is 10mm, the height is 50-150mm, and the angle between the generatrix of the 4-cylinder base and the axis is 15-80°.

[0071] The base 3, the tooth base 4, and the external hexagonal nut 5 are all made of carbon structural steel. While ensuring their strength, their weight is reduced to the greatest extent. The side of the frustum of the tooth base 4 without the spiral groove is uniformly coated with diamond grit, which makes it faster in the working process and the working surface smoother, eliminating the need for secondary treatment of the working surface after the work is completed.

[0072] Three water guide holes 2 are evenly distributed at a 120° angle on the bottom surface of the blade base 4. The three water guide holes 2 are evenly distributed on the bottom surface of the blade base 4 and are concentric circles with the bottom surface of the blade base 4. The diameter of the circumference of the distribution of the water guide holes 2 is smaller than the diameter of the internal thread hole of the base 3. The water guide holes 2 are leaked into the internal thread hole of the base 3 to facilitate the flow out after water is introduced. By opening water guide holes on the blade base 4, the dust removal rate reaches 98% after water is introduced during actual operation. Due to its unique blade design, precise grooving can be performed.

[0073] This invention, through the design of the cutting tooth base, the shape of the cutting teeth, and the cutting angle, can accurately groove the places that require V-grooving. During the cutting process, cooling water is supplied to the drill and milling head through the central hole, and the chips are discharged through the water tank, ensuring a smooth cutting surface. There is no dust during the operation and the error is small.

[0074] The use of high-strength materials in this invention improves the service life of the drill and milling head, and the drill and milling head is lightweight, easy to carry, and convenient to assemble and disassemble.

[0075] Example 7

[0076] Based on Embodiment 6, when the drill and milling head of this utility model is used, an external thread is provided on the output shaft of the grooving machine, such as... Figures 7-8 As shown, the base 3 and the external hexagonal nut 5 are fixed to the output shaft of the grooving machine by means of threaded connection, so that the V-type drill and milling head can be fixed on the grooving machine.

[0077] The slotting machine comprises a slotting cutting head, and the lower end of the slotting cutting head is connected with a guide rail assembly and the slotting cutting head moves on the guide rail assembly.

[0078] As shown in Figures 9-10 The slotting cutting head comprises a box support plate 4-1 arranged in a horizontal state, a feed cutting frame 16-1 fixedly connected with the box support plate 4-1 and perpendicular to the box support plate 4-1, a driving mechanism fixed on the box support plate 4-1, a drill milling head 5-1 connected with the driving mechanism, a feed cutting driving mechanism fixed on the feed cutting frame 16-1, a feed cutting gear 14-1 drivingly connected with the feed cutting driving mechanism, a feed cutting rack 15-1 drivingly connected with the feed cutting gear 14-1, a feed cutting base 18-1 fixedly connected with the feed cutting rack 15-1, and a feed cutting driving mechanism fixed on the feed cutting base 18-1 and drivingly connected with a feed cutting gear 13-1, wherein the feed cutting gear 13-1 is drivingly connected with the guide rail assembly.

[0079] The driving mechanism comprises a speed reducer 2-1 fixed on the box support plate 4-1, a main motor 1-1 fixed on the speed reducer 2-1, an output end of the main motor 1-1 fixedly connected with an input end of the speed reducer 2-1, and the drill milling head 5-1 connected with an output end of the speed reducer 2-1, wherein the rotating shaft of the drill milling head 5-1 is in a vertical state.

[0080] As shown in Figure 11 The feed cutting driving mechanism comprises a feed cutting motor 7-1 fixed on the feed cutting frame 16-1, the feed cutting motor 7-1 drivingly connected with the feed cutting gear 14-1 through a worm and gear mechanism, the feed cutting motor 7-1 rotatingly driving the worm and gear mechanism to drive the feed cutting gear 14-1 to move up and down on the feed cutting rack 15-1, thereby driving the feed cutting frame 16-1, the box support plate 4-1, the driving mechanism and the drill milling head 5-1 to move up and down.

[0081] The feed cutting base 18-1 is arranged in a horizontal state, a vertical column 6-1 is arranged on the upper surface of the feed cutting base 18-1, and the feed cutting rack 15-1 is fixed on the vertical column 6-1.

[0082] The feed cutting driving mechanism comprises a feed cutting motor 9-1 fixed on the feed cutting base 18-1, the output end of the feed cutting motor 9-1 drivingly connected with the feed cutting gear 13-1 through a worm and gear mechanism, and the rotating shaft of the feed cutting gear 13-1 arranged in a horizontal state.

[0083] The worm and gear mechanism comprises a worm 27-1 fixedly connected with the output shaft of the feed cutting motor 7-1 or the feed cutting motor 9-1, the worm 27-1 drivingly connected with a worm gear 28-1, the worm gear 28-1 fixed on a rotating shaft, the rotating shaft rotatingly fixed on the feed cutting frame 16-1 or the feed cutting base 18-1, and the other end of the rotating shaft fixedly connected with the feed cutting gear 14-1 or the feed cutting gear 13-1.

[0084] The guide rail assembly comprises a guide rail body 20-1, the upper surface of the guide rail body 20-1 is provided with a tool feed rack 19-1, and a tool feed gear 13-1 is engaged with the tool feed rack 19-1.

[0085] The working principle of the drilling and milling head 5-1 after installation is taken as an example of the top to be slotted as a plane, and the guide rail body 20-1 is in a horizontal state.

[0086] The guide rail body 20-1 is fixed on the trolley, and then the slotting cutting head is installed at any cutting position of the guide rail body 20-1. The main motor of the slotting cutting head is turned on, when cutting starts, the tool feed motor 7-1 is turned on, the tool feed motor 7-1 drives the tool feed gear 14-1 to rotate, moves upward on the tool feed rack 15-1, drives the tool feed rack 16-1 and the box support plate 4-1 to move upward until the top of the drilling and milling head 5-1 contacts the slotting plane, this position is taken as the zero position, then the tool feed motor 7-1 continues to drive the drilling and milling head 5-1 upward and the main motor 1-1 is turned on, the inner wall of the top to be slotted is slotted from the zero position, when the feeding amount of the tool feed motor 7-1 driving the drilling and milling head 5-1 is consistent with the set slotting depth, the tool feed is stopped, that is, the tool feed motor 7-1 is turned off.

[0087] At this time, the tool feed motor 7-1 is turned on, the tool feed motor 7-1 drives the tool feed gear 14-1 to rotate in the reverse direction, and the drilling and milling head 5-1 is retracted.

[0088] If the surface to be slotted is arc-shaped, the guide rail body 20-1 can be made into an arc shape corresponding to the slotted surface.

Claims

1. A drill and mill head for concrete V-guttering, characterised in that, The utility model relates to a cutting tooth (1) and a cutting tooth base (4) are arranged on the upper surface of the base (3), and the cutting tooth base (4) is provided with a plurality of spiral grooves as the cutting tooth (1) on the side surface of the truncated cone.

2. The drill and mill head for concrete V-gutter according to claim 1, characterized in that, The side surface of the cutting tooth base (4) is evenly plated with diamond grits at the position without spiral grooves.

3. The drill-mill head for V-guttering of concrete according to claim 1, characterized in that, The lower surface of the base (3) is integrally connected with the base (3) and provided with an outer hexagonal nut (5), the axis of the outer hexagonal nut (5) coincides with the axis of the base (3), and the axis of the base (3) coincides with the axis of the cutting tooth base (4).

4. The drill and mill head for concrete V-gutter according to claim 3, characterized in that, The base (3) is provided with an inner threaded hole coaxial with the inner threaded hole of the outer hexagonal nut (5).

5. The drill and mill head for concrete V-gutter according to claim 4, characterized in that, The plurality of water guide holes (2) are evenly distributed on the bottom surface of the cutting tooth base (4) and on the circumference of the concentric circle of the bottom surface of the cutting tooth base (4), and the diameter of the circumference where the water guide holes (2) are distributed is smaller than the diameter of the inner threaded hole of the base (3).

6. The drill and mill head for concrete V-gutter according to claim 5, characterized in that, The water guide holes (2) are evenly distributed at an angle of 120 degrees on the bottom surface of the cutting tooth base (4).

7. The drill-mill head for V-guttering of concrete according to claim 1, characterized in that, The side surface of the cutting tooth base (4) is evenly provided with three spiral grooves as the cutting tooth (1) in the clockwise direction, and the spiral angle of the spiral groove is 45 degrees.

8. The drill milling head for concrete V-gutter according to claim 1, characterized in that, The diameter of the lower bottom surface of the cutting tooth base (4) is 60-160mm, the diameter of the upper bottom surface of the cutting tooth base (4) is 10mm, the height of the cutting tooth base (4) is 50-150mm, and the angle between the generatrix of the cutting tooth base (4) and the axis is 15-80 degrees.

9. The drill and mill head for concrete V-gutter according to claim 4, characterized in that, The base (3) and the outer hexagonal nut (5) are fixed on the output shaft of the grooving machine through threaded connection.

10. The drill milling head for concrete V-gutter according to claim 1, characterized in that, The base (3), the cutting tooth base (4) and the outer hexagonal nut (5) are all made of carbon structural steel.

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