WO2021129513A1 - 一种拼合式倒角装置 - Google Patents

一种拼合式倒角装置 Download PDF

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Publication number
WO2021129513A1
WO2021129513A1 PCT/CN2020/137273 CN2020137273W WO2021129513A1 WO 2021129513 A1 WO2021129513 A1 WO 2021129513A1 CN 2020137273 W CN2020137273 W CN 2020137273W WO 2021129513 A1 WO2021129513 A1 WO 2021129513A1
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WO
WIPO (PCT)
Prior art keywords
water
hole
chamfering device
thin tooth
base body
Prior art date
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PCT/CN2020/137273
Other languages
English (en)
French (fr)
Inventor
宋京新
龙慧玲
叶勇
梁安宁
王志勇
秦凤明
Original Assignee
桂林创源金刚石有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201911372377.9A external-priority patent/CN110948404A/zh
Priority claimed from CN201922391112.5U external-priority patent/CN211639550U/zh
Application filed by 桂林创源金刚石有限公司 filed Critical 桂林创源金刚石有限公司
Priority to EP20908116.5A priority Critical patent/EP4082719A4/en
Publication of WO2021129513A1 publication Critical patent/WO2021129513A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/06—Drills with lubricating or cooling equipment
    • B23B51/068—Details of the lubricating or cooling channel
    • B23B51/0684—Deflector or nozzle on drill to point the coolant in a desired direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/18—Wheels of special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/12—Cooling and lubrication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/108—Bits for countersinking having a centering drill

Definitions

  • the invention relates to the field of abrasive processing tools, in particular to a split chamfering device.
  • the existing chamfering device (chamfering grinding head or chamfering sleeve that can be used with a drill bit) is a conical integrated structure.
  • a number of drainage grooves 4 are provided on the conical surface of the chamfering device.
  • the drainage groove 4 is provided with a drainage hole 15 communicating with the inside of the chamfering device and draining outward.
  • cold water is discharged through the drainage hole 15 to achieve the cooling effect.
  • the axial height position of the drain hole 15 is different to drain water in different directions.
  • the above-mentioned integrated chamfering device has the following defects:
  • the drain hole 15 cannot be spread all over the cone surface of the chamfering device, so the cold water discharged from the drain hole 15 cannot cover all the working surface of the chamfering device, and the cooling is not complete;
  • the processing volume of the chamfering device at different positions in the axial direction is different.
  • the processing volume at a is greater than the processing volume at b on the chamfering device, so the chamfering device
  • the amount of wear at a is greater than that at b, that is, the longer the grinding distance H on the chamfering device, the greater the wear. Therefore, the wear at different positions cannot be synchronized (quantity), which will eventually make the chamfering device out of shape (dotted line in Figure 2) ).
  • the technical problem to be solved by the present invention is to provide a split chamfering device.
  • a split chamfering device including a base and a number of thin tooth pieces; all the thin tooth pieces are fixedly spliced on the side wall of the lower part of the base and form a tapered shape.
  • Chamfered body, and all the thin tooth pieces extend below the base body, and all the thin tooth pieces have their lower sides close to the base body against each other, and two adjacent thin tooth pieces
  • a drainage groove communicating with the water hole inside the base body is formed therebetween.
  • the beneficial effect of the present invention is that the chamfering device is formed by splicing a plurality of thin tooth pieces, and drainage grooves are formed between every two adjacent thin tooth pieces, so that the working surface of the chamfering device is densely distributed with drainage grooves.
  • the cooling water discharged to the outside can cover all the working surface, improve work efficiency and extend the service life of the chamfering device.
  • the circumferential thickness of the thin tooth at each point in the radial direction of the working surface is the same, and the cumulative arc length of the circumference is the same, that is, the wear resistance and anti-deformation ability are the same; although the machining volume and wear volume of the circumference at each point in the radial direction of the working surface As the diameter becomes smaller, it becomes larger, but compared with the chamfering device of the prior art, the relative deformation rate of each point in the radial direction tends to be close, and the deformation problem is alleviated, thus prolonging the life of the chamfering device.
  • the present invention can also be improved as follows:
  • the side wall of the base body is provided with an insertion hole for inserting the upper side of the thin tooth sheet
  • the side wall of the base body is provided with an insertion hole corresponding to the lower side of the insertion hole to connect the water through hole and the drain hole.
  • Water supply tank connected to the water tank.
  • the beneficial effect of adopting the above-mentioned further solution is to realize the communication between the water-passing hole and the drainage groove.
  • a locking block is provided on one side of the middle of the thin toothed piece, and a locking groove is provided on the side wall of the base body at a position corresponding to the locking block; on the base body and corresponding to a position above the thin toothed piece
  • the thread is sleeved with a nut, and the nut squeezes the upper end of the thin tooth piece downward to fix the thin tooth piece at the corresponding position of the base.
  • the beneficial effect of adopting the above-mentioned further solution is that it is convenient to assemble and position the clamping block, and realize the fixation of the thin tooth piece on the base body.
  • the lower part of the thin toothed piece is provided with a drainage channel communicating with the water through hole and draining water to the outside.
  • the beneficial effect of adopting the above-mentioned further solution is to ensure that there is drainage at the lower part of the thin tooth piece.
  • the drainage channel is a semicircular hole, which is provided with a plurality of holes and is arranged horizontally and vertically at the lower part of the thin tooth piece.
  • the beneficial effect of adopting the above-mentioned further solution is that it can not only ensure the drainage of the lower part of the thin tooth piece, but also prevent the thin tooth piece from losing its strength when the thickness is too thin.
  • the water mechanism also includes a water blocking mechanism that blocks the cold water in the water through hole axially so that the cold water in the water through hole passes through the water supply groove and is then discharged radially to the drain groove.
  • the water mechanism is installed on the base body.
  • the water blocking mechanism includes a shaft center and a blocking cover; the upper end of the shaft center is fixed inside the water passage hole, and the lower end thereof extends out of the water passage hole, and the shaft center is connected to the water passage hole.
  • the inner wall of the hole is provided with a gap; the blocking cover is fixed at the lower end of the shaft center and sticks to the thin tooth piece to axially block the cold water in the water through hole.
  • the beneficial effect of adopting the above-mentioned further solution is that the cold water is discharged radially to cool the working surface.
  • it also includes a joint; one end of the joint is connected to the spindle of the machine tool, and the other end of the joint is connected to the end of the base away from the thin toothed piece.
  • a water supply hole is provided inside the joint to connect an external water source with the water passage .
  • the beneficial effect of adopting the above-mentioned further solution is to realize the connection between the chamfering device and the main shaft of the machine tool.
  • the upper end of the shaft center extends to the inside of the water supply hole, a screw hole is horizontally provided in the joint corresponding to the upper end of the shaft center, and the shaft center is extruded in the screw hole. The upper end is used to fix the shaft with screws.
  • the beneficial effect of adopting the above-mentioned further solution is to realize the fixation of the shaft center so as to form an upward pressure on the thin tooth piece.
  • the position of the upper end of the shaft center corresponding to the screw is a plane structure.
  • the beneficial effect of adopting the above-mentioned further solution is to improve the squeezing effect of the screw.
  • Figure 1 is a three-dimensional view of an existing chamfering grinding head
  • Figure 2 is a schematic diagram of the processing and wear of the existing chamfer grinding head (the arc and the dotted line indicate the shape of the chamfering grinding head after wear);
  • Figure 3 is an overall three-dimensional view of Embodiment 1 of the present invention.
  • Figure 4 is an exploded view of the first embodiment of the present invention (a thin tooth is retained);
  • Figure 5 is a cross-sectional view of the first embodiment of the present invention (the arrow indicates the flow direction of cold water);
  • Fig. 6 is an enlarged view of A of Fig. 5 (the straight and thick dashed line indicates the shape of the thin gear after abrasion);
  • Figure 7 is a cross-sectional view of the base of the first embodiment
  • Figure 8 is a three-dimensional view of a thin toothed piece inserted on the base of the first embodiment
  • FIG. 9 is a three-dimensional view of the first embodiment of the present invention, after removing the shaft and other parts, leaving only two thin tooth pieces;
  • Fig. 10 is an enlarged view of B in Fig. 9;
  • Figure 11 is a three-dimensional view of the second embodiment of the present invention (excluding the holding ring);
  • Figure 12 is an enlarged view of C in Figure 11;
  • Figure 13 is a cross-sectional view of Figure 11;
  • Fig. 14 is an exploded view of the second embodiment of the present invention (a thin tooth is retained).
  • a split chamfering grinding head includes a base 1 and a number of thin tooth pieces 2 in which processing abrasive diamond particles 17 are provided. All the thin tooth pieces 2 are fixedly spliced on the side wall of the lower part of the base 1 to form a conical chamfer, and all the thin tooth pieces 2 extend below the base 1, all The side of the lower part of the thin toothed piece 2 close to the base 1 abuts against each other, and a drainage groove 4 communicating with the internal water hole 3 of the base 1 is formed between two adjacent thin toothed pieces 2.
  • the chamfering grinding head is formed by splicing a number of thin tooth pieces 2, and a drainage groove 4 is formed between every two adjacent thin tooth pieces 2, so that the working surface of the chamfering grinding head is densely distributed with drainage grooves 4 and 4
  • the cooling water discharged to the outside can cover all the working surface, improve work efficiency and extend the service life of the chamfering grinding head.
  • the relative deformation rate between the points in the radial direction tends to be close, the deformation problem is alleviated and the life of the chamfering device is prolonged. The specific reasons are as follows:
  • Abrasive entity of the working face, the cumulative arc length of the thin tooth 2 on the circumference of each point in the radial direction is B, and they are approximately equal everywhere (approximately equal means that the difference lies in different radial points, the curvature of the arc is different, and the arc length is slightly different) .
  • the cumulative arc length of the thin-toothed piece 2 on the circumference of point a is B 1
  • Abrasive entity of working face the circumference L of each point in the radial direction is proportional to the diameter.
  • the circumference L at point a is B 1
  • the processing volume at the big end is smaller than the processing volume at the small end. Therefore, the deformation rate of the big end is smaller than that of the small end.
  • the present invention reduces the abrasive substance at the big end, so that the deformation rate of the big end is increased and the deformation rate of the small end tends to be close, that is, the deformation problem of the chamfering device is alleviated and thus lengthened.
  • the life of the chamfering device because the thickness of the thin tooth plate 2 at each point in the radial direction of the working surface is the same in the circumferential direction and the cumulative arc length of the circumference is the same, the wear resistance and deformation resistance are the same.
  • the side wall of the base 1 is provided with a socket 5 for inserting the upper side of the thin tooth sheet 2, and the side wall of the base 1 corresponds to the bottom of the socket 5
  • a water supply tank 6 connecting the water through hole 3 and the drain tank 4 is provided.
  • a clamping block 7 is provided on one side of the middle of the thin tooth sheet 2, and a clamping slot 8 is provided on the side wall of the base body 1 at a position corresponding to the clamping block 7.
  • a nut 11 is threaded on the base 1 and corresponding to the position above the thin tooth plate 2, and the nut 11 presses down the upper end of the thin tooth plate 2 to fix the thin tooth plate 2 in The corresponding position of the substrate 1.
  • the lower part of the thin tooth plate 2 is provided with a drainage channel 9 that communicates with the water hole 3 and drains water to the outside.
  • the drainage channel 9 ensures that even if the lower part of the thin tooth plate 2 abuts against each other, there will be drainage. , To ensure the cooling effect.
  • the drainage channel 9 is a semi-circular hole, which is provided with a plurality of holes and is arranged vertically and axially horizontally at the lower part of the thin tooth plate 2 respectively.
  • the semicircular hole drainage channel 9 can not only ensure the drainage of the lower part of the thin tooth plate 2, but also prevent the thin tooth plate 2 from being too thin to lose its strength.
  • the chamfering grinding head also includes axially blocking the cold water in the water through hole 3, so that the cold water in the water through hole 3 passes through the water supply groove 6 and then is radially discharged to the drain groove 4
  • the water-retaining mechanism, the water-retaining mechanism is installed on the base 1.
  • the limiting mechanism includes a shaft 10 and a blocking cover. The upper end of the shaft 10 is fixed inside the water passing hole 3, and its lower end extends out of the water passing hole 3, and a gap is provided between the shaft 10 and the inner wall of the water passing hole 3;
  • the cover is fixed on the lower end of the shaft 10 and is attached to the thin tooth sheet 2 to axially block the cold water in the water through hole 3.
  • the upper end of the shaft 10 extends to the inside of the water supply hole 13, a screw hole 14 is horizontally provided in the joint 12 corresponding to the upper end of the shaft, and the screw hole is provided with the extrusion
  • the upper end of the shaft core 10 is provided with screws for fixing the shaft core 10.
  • the position of the upper end of the shaft core 10 corresponding to the screw is a plane structure.
  • One end of the joint 12 is connected to the main shaft of the machine tool, and the other end is connected to the end of the base body 1 away from the thin tooth plate 2.
  • the joint 12 is provided with a water supply hole 13 that connects an external water source with the water through hole 3 . The external water source first enters the water supply hole 13 and then to the water hole 3.
  • a part of the cold water in the water hole 3 will then pass through the water supply trough 6 and be discharged out through the drainage trough 4 to cool the working surface, and the other part of the cold water will flow through the drainage channel 9
  • the external discharge cools the working surface, so that the cooling area can cover the entire working surface to ensure the cooling effect.
  • the split structure of the thin sprocket 2 in the first embodiment can also be applied to a chamfer sleeve that can be used with a drill bit.
  • the thin sprocket 2 is also fixed and spliced through the cover plate 18 and the aluminum pad 19
  • a tapered chamfered body is formed on the side wall of the lower part of the base body 1.
  • the base body 1 is connected with the main shaft of the corresponding machine tool through a holding ring 20, and a connecting water hole inside the base body 1 is formed between two adjacent thin tooth pieces 2 In the drain groove 4 of 3, the lower part of the thin tooth plate 2 is provided with a drain 9 communicating with the water hole 3 and draining water to the outside.
  • the chamfer sleeve can also form a drainage groove 4 and a drainage channel 9 between every two adjacent thin tooth pieces 2, so that the working surface of the chamfer sleeve is densely distributed with the drainage grooves 4 and 9 drainage channels.
  • the cooling water discharged from the sink 4 and the drain 9 can completely cover the working surface, which also has the advantages of improving work efficiency and prolonging the service life of the chamfer sleeve.
  • a water tank 21 for equipment is opened in the lower part of the base body 1.
  • the spare water tank 21 is used for the thin sprocket 2 to be worn to a certain extent (when the spare water tank 21 is exposed), the adjacent thin sprocket 2 can still be normal after passing through the spare water tank 21 Water.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

一种拼合式倒角装置，包括基体（1）和若干薄齿片（2）；所有的薄齿片（2）固定拼接在基体（1）下部的侧壁上并形成锥形的倒角体，并且所有的薄齿片（2）下部延伸到基体（1）的下方，所有的薄齿片（2）下部靠近基体（1）的一侧相互抵靠住，相邻两个薄齿片（2）之间形成连通基体（1）内部通水孔（3）的排水槽（4）。该倒角装置采用若干薄齿片（2）拼接而成，每相邻两个薄齿片（2）之间均形成排水槽（4），从而使得倒角装置的工作面密集分布排水槽（4），排水槽（4）向外排出的冷却水能将工作面全部覆盖，提高工作效率并且延长了倒角装置的使用寿命；同时，径向各点之间相对比较的变形率趋于接近，变形问题得到缓解，因而延长了倒角装置的寿命。

Description

一种拼合式倒角装置 技术领域
本发明涉及磨具加工工具领域，具体涉及一种拼合式倒角装置。
背景技术
如图1所示，现有倒角装置(倒角磨头或可与钻头配套使用的倒角套)为锥形的一体结构，在倒角装置的锥面上设有若干排水槽4，在排水槽4内设有连通倒角装置内部且向外排水的排水孔15，在倒角加工中冷水通过排水孔15向外排出以达到冷却的功效。其中，排水孔15的轴向高度位置不同以向不同方向排水。上述一体结构的倒角装置，存在如下的缺陷：
(1)排水孔15不能遍布在倒角装置的锥面上，因此排水孔15向外排出的冷水无法将倒角装置的工作面全部覆盖，冷却不彻底；
(2)由于排水孔15的轴向高度位置不同，当加工面刚好处在上下两排水孔15之间时，排水孔15排出的冷水无法到达加工面进行冷却；
(3)加工过程中，倒角装置在轴向上不同位置的加工量不不同，如图2所示，倒角装置上a处的加工量要大于b处的加工量，因此倒角装置上a处的磨损量要大于b处的磨损量，即倒角装置上磨距离H越长，磨损越大，因此不同位置的磨损不能同步(量)，最终使得倒角装置失形(图2虚线)。
(4)倒角装置在工作面径向各点的圆周长随直径的变大而变大，即耐磨性及抗变形能力随直径的变大而变大，但径向各点所处圆周的加工量随直径的变小而变大，即磨损量随直径的变小而变大，直径越小处越易变形。
发明内容
综上所述，为克服现有技术的不足，本发明所要解决的技术问题是提供 一种拼合式倒角装置。
本发明解决上述技术问题的技术方案如下：一种拼合式倒角装置，包括基体和若干薄齿片；所有的所述薄齿片固定拼接在所述基体下部的侧壁上并形成锥形的倒角体，并且所有的所述薄齿片下部延伸到所述基体的下方，所有的所述薄齿片下部靠近所述基体的一侧相互抵靠住，相邻两个所述薄齿片之间形成连通所述基体内部通水孔的排水槽。
本发明的有益效果是：该倒角装置采用若干薄齿片拼接而成，每相邻两个薄齿片之间均形成排水槽，从而使得倒角装置的工作面密集分布排水槽，排水槽向外排出的冷却水能将工作面全部覆盖，提高工作效率并且延长了倒角装置的使用寿命。同时，在工作面径向各点的薄齿片周向厚度一致、圆周累计弧长相等，即耐磨性及抗变形能力一致；虽然工作面径向各点所处圆周的加工量及磨损量随直径的变小而变大，但相对于现有技术的倒角装置，径向各点之间相对比较的变形率趋于接近，变形问题得到缓解因而延长了倒角装置的寿命。
在上述技术方案的基础上，本发明还可以做如下改进：
进一步，所述基体的侧壁上设有插接所述薄齿片上侧的插孔，在所述基体的侧壁上对应所述插孔的下方设有将所述通水孔与所述排水槽连通的供水槽。
采用上述进一步方案的有益效果是：实现通水孔与排水槽连通。
进一步，所述薄齿片中部一侧设有卡块，所述基体的侧壁上对应所述卡块的位置处设有卡槽；在所述基体上且对应所述薄齿片上方的位置螺纹套装有螺母，并且所述螺母向下挤压所述薄齿片的上端以将所述薄齿片固定在所述基体相应的位置。
采用上述进一步方案的有益效果是：便于对卡块的装配定位，实现将薄齿片固定在基体上。
进一步，所述薄齿片下部设有连通所述通水孔并向外部排水的排水道。
采用上述进一步方案的有益效果是：保证薄齿片下部有排水。
进一步，所述排水道为半圆形孔，其设有多个并分别上下轴向水平布置在所述薄齿片下部。
采用上述进一步方案的有益效果是：既能保证薄齿片下部有排水，又能避免薄齿片厚度太薄失去强度。
进一步，还包括所述通水孔内的冷水轴向阻挡住，进而使所述通水孔内的冷水经所述供水槽后再向所述排水槽径向排出的挡水机构，所述挡水机构安装在所述基体上。
进一步，所述挡水机构包括轴心和挡盖；所述轴心的上端固定在所述通水孔内部，其下端伸出所述通水孔外，并且所述轴心与所述通水孔内壁设有间隙；所述挡盖固定在所述轴心的下端并贴住所述薄齿片以将所述通水孔内的冷水轴向阻挡住。
采用上述进一步方案的有益效果是：实现将冷水径向排出以对工作面进行冷却。
进一步，还包括接头；所述接头一端连接机床主轴，其另一端连接所述基体远离所述薄齿片的一端，在所述接头内部设有将外部水源与所述通水孔连通的供水孔。
采用上述进一步方案的有益效果是：实现将倒角装置与机床主轴的连接。
进一步，所述轴心的上端延伸到所述供水孔的内部，在所述接头内对应所述轴心上端的位置水平设有螺孔，在所述螺孔内设有挤压所述轴心上端以将所述轴心固定的螺钉。
采用上述进一步方案的有益效果是：实现对轴心的固定以使其对薄齿片形成上压的作用。
进一步，所述轴心上端对应所述螺钉的位置为平面结构。
采用上述进一步方案的有益效果是：提高螺钉的挤压效果。
附图说明
图1为现有倒角磨头的三维图；
图2为现有倒角磨头加工磨损示意图(圆弧虚线表示倒角磨头磨损后的形状)；
图3为本发明实施例一的整体三维图；
图4为本发明实施例一的爆炸图(保留一薄齿片)；
图5为本发明实施例一的剖视图(箭头表示冷水的流向)；
图6为图5的A放大图(直粗虚线表示薄齿片磨损后的形状)；
图7为实施例一基体的剖视图；
图8为实施例一基体上插接一薄齿片的三维图；
图9为本发明实施例一除去轴心等部件后只留两片薄齿片的三维图；
图10为图9的B放大图；
图11为本发明实施例二的三维图(除去抱紧环)；
图12为图11的C放大图；
图13为图11的剖视图；
图14为本发明实施例二的爆炸图(保留一薄齿片)。
附图中，各标号所代表的部件列表如下：
1、基体，2、薄齿片，3、通水孔，4、排水槽，5、插扣，6、供水槽，7、卡块，8、卡槽，9、排水道，10、轴心，11、螺母，12、接头，13、供水孔，14、螺孔,15、排水孔，17、金刚石，18、盖板，19、铝垫，20、抱紧环，21、备用水槽。
具体实施方式
以下结合附图对本发明的原理和特征进行描述，所举实例只用于解释本发明，并非用于限定本发明的范围。
实施例一
如图3-5所示，一种拼合式倒角磨头，包括基体1和若干薄齿片2，薄齿片2内设有加工磨料金刚石颗粒17。所有的所述薄齿片2固定拼接在所述基体1下部的侧壁上并形成锥形的倒角体，并且所有的所述薄齿片2下部延伸到所述基体1的下方，所有的所述薄齿片2下部靠近所述基体1的一侧相互抵靠住，相邻两个所述薄齿片2之间形成连通所述基体1内部通水孔3的排水槽4。该倒角磨头采用若干薄齿片2拼接而成，每相邻两个薄齿片2之间均形成排水槽4，从而使得倒角磨头的工作面密集分布排水槽4，排水槽4向外排出的冷却水能将工作面全部覆盖，提高工作效率并且延长了倒角磨头的使用寿命。同时，径向各点之间相对比较的变形率趋于接近，变形问题得到缓解因而延长了倒角装置的寿命，具体原因如下：
本发明采用薄齿片2拼合式结构：工作面径向某点所处圆周的加工量A＝该点圆周长L*该点轴向加工距离H，对于同一倒角装置，径向直径越大，圆周长L越大，但H越小。工作面磨料实体，其径向各点圆周上的薄片齿2累计弧长为B，且处处近似相等(近似相等是指差异在于不同的径向点，弧的曲率不同，弧长略有差异)。如图2中，在a点圆周上薄齿片2累计弧长为B 1,在b点圆周上薄齿片2累计弧长为B 2,其中B 1＝B 2。因此，B＝n*l，(n-薄片齿的数量，l-薄片齿的周向弧长),磨料实体与各点的直径变化关联极小。
现有一体结构的倒角装置：工作面径向某点所处圆周的加工量A＝该点圆周长L*该点轴向加工距离H。工作面磨料实体，其径向各点圆周长L与直径成正比例关系。如图2中，在a点圆周长L为B 1,在b点圆周长L为B 2,其中B 1＞B 2(a点直径大于b点直径)。因此，B＝L,磨料实体与各点的直径变化关联 较大。
倒角装置，大端处的加工量比小端处的加工量小。所以，大端的变形率小于小端的变形率。综上所述，本发明和现有技术相比，减少了大端的磨料实体，从而使大端的变形率增大而和小端的变形率趋于接近，即倒角装置的变形问题得到缓解因而延长了倒角装置的寿命。另外，由于在工作面径向各点的薄齿片2周向厚度一致、圆周累计弧长相等，其耐磨性及抗变形能力一致。
如图7和8所示，所述基体1的侧壁上设有插接所述薄齿片2上侧的插孔5，在所述基体1的侧壁上对应所述插孔5的下方设有将所述通水孔3与所述排水槽4连通的供水槽6。所述薄齿片2中部一侧设有卡块7，所述基体1的侧壁上对应所述卡块7的位置处设有卡槽8。在所述基体1上且对应所述薄齿片2上方的位置螺纹套装有螺母11，并且所述螺母11向下挤压所述薄齿片2的上端以将所述薄齿片2固定在所述基体1相应的位置。将薄齿片2的上侧插接到基体1的插孔5中实现对薄齿片2的径向定位，由于薄齿片2的卡块7卡合在卡槽8内，转动螺母11进使其向下挤压薄齿片2的上端，从而实现薄齿片2的轴向定位。通过上述方式，能快速将薄齿片2的固定拼接在基体1，并且定位可靠。
如图9和10所示，所述薄齿片2下部设有连通所述通水孔3并向外部排水的排水道9，排水道9保证薄齿片2下部即使相互抵靠也会有排水，保证冷却效果。优选的：所述排水道9为半圆形孔，其设有多个并分别上下轴向水平布置在所述薄齿片2下部。半圆形孔排水道9的既能保证薄齿片2下部有排水，又能避免薄齿片2厚度太薄失去强度。
该倒角磨头还包括将所述通水孔3内的冷水轴向阻挡住，进而使所述通水孔3内的冷水经所述供水槽6后再向所述排水槽4径向排出的挡水机构，所述挡水机构安装在所述基体1上。所述限位机构包括轴心10和挡盖。所 述轴心10的上端固定在所述通水孔3内部，其下端伸出所述通水孔3外，并且所述轴心10与所述通水孔3内壁设有间隙；所述挡盖固定在所述轴心10的下端并贴住所述薄齿片2以将所述通水孔3内的冷水轴向阻挡住。所述轴心10的上端延伸到所述供水孔13的内部，在所述接头12内对应所述轴心上端的位置水平设有螺孔14，在所述螺孔内设有挤压所述轴心10上端以将所述轴心10固定的螺钉。所述轴心10上端对应所述螺钉的位置为平面结构。所述接头12一端连接机床主轴，其另一端连接所述基体1远离所述薄齿片2的一端，在所述接头12内部设有将外部水源与所述通水孔3连通的供水孔13。外部水源先进入供水孔13后再到通水孔3，通水孔3内的冷水一部分会再经供水槽6并通过排水槽4向外排出对工作面冷却，另外一部分冷水通过排水道9向外排出对工作面冷却，从而实现冷却面积可以覆盖整个工作面，保证冷却效果。
实施例二
实施例一中的薄齿片2拼合式结构同样可以应用在可与钻头配套使用的倒角套上，如图11-14所示，薄齿片2通过盖板18和铝垫19同样固定拼接在基体1下部的侧壁上并形成锥形的倒角体，基体1通过抱紧环20与相应机床的主轴连接，并且相邻两个薄齿片2之间形成连通基体1内部通水孔3的排水槽4，薄齿片2下部设有连通通水孔3并向外部排水的排水道9。通过上述结构，倒角套同样在每相邻两个薄齿片2之间均可形成排水槽4以及排水道9，从而使得倒角套的工作面密集分布排水槽4以及排水道9，排水槽4以及排水道9向外排出的冷却水能将工作面全部覆盖，同样具有提高工作效率并且延长了倒角套的使用寿命等优点。另外，在基体1下部开设备用水槽21，备用水槽21的作用为薄齿片2使用磨损到一定程度后(备用水槽21外露时)，通过备用水槽21后相邻薄齿片2依然能正常通水。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明 的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种拼合式倒角装置，其特征在于，包括基体(1)和若干薄齿片(2)；所有的所述薄齿片(2)固定拼接在所述基体(1)下部的侧壁上并形成锥形的倒角体，并且所有的所述薄齿片(2)下部延伸到所述基体(1)的下方，所有的所述薄齿片(2)下部靠近所述基体(1)的一侧相互抵靠住，相邻两个所述薄齿片(2)之间形成连通所述基体(1)内部通水孔(3)的排水槽(4)。
  2. 根据权利要求1所述的拼合式倒角装置，其特征在于，所述基体(1)的侧壁上设有插接所述薄齿片(2)上侧的插孔(5)，在所述基体(1)的侧壁上对应所述插孔(5)的下方设有将所述通水孔(3)与所述排水槽(4)连通的供水槽(6)。
  3. 根据权利要求1所述的拼合式倒角装置，其特征在于，所述薄齿片(2)中部一侧设有卡块(7)，所述基体(1)的侧壁上对应所述卡块(7)的位置处设有卡槽(8)；在所述基体(1)上且对应所述薄齿片(2)上方的位置螺纹套装有螺母(11)，并且所述螺母(11)向下挤压所述薄齿片(2)的上端以将所述薄齿片(2)固定在所述基体(1)相应的位置。
  4. 根据权利要求1所述的拼合式倒角装置，其特征在于，所述薄齿片(2)下部设有连通所述通水孔(3)并向外部排水的排水道(9)。
  5. 根据权利要求4所述的拼合式倒角装置，其特征在于，所述排水道(9)为半圆形孔，其设有多个并分别上下轴向水平布置在所述薄齿片(2)下部。
  6. 根据权利要求1所述的拼合式倒角装置，其特征在于，还包括将所述通水孔(3)内的冷水轴向阻挡住，进而使所述通水孔(3)内的冷水经所述供水槽(6)后再向所述排水槽(4)径向排出的挡水机构，所述挡水机构 安装在所述基体(1)上。
  7. 根据权利要求6所述的拼合式倒角装置，其特征在于，所述挡水机构包括轴心(10)和挡盖；所述轴心(10)的上端固定在所述通水孔(3)内部，其下端伸出所述通水孔(3)外，并且所述轴心(10)与所述通水孔(3)内壁设有间隙；所述挡盖固定在所述轴心(10)的下端并贴住所述薄齿片(2)以将所述通水孔(3)内的冷水轴向阻挡住。
  8. 根据权利要求7所述的拼合式倒角装置，其特征在于，还包括接头(12)；所述接头(12)一端连接机床主轴，其另一端连接所述基体(1)远离所述薄齿片(2)的一端，在所述接头(12)内部设有将外部水源与所述通水孔(3)连通的供水孔(13)。
  9. 根据权利要求8所述的拼合式倒角装置，其特征在于，所述轴心(10)的上端延伸到所述供水孔(13)的内部，在所述接头(12)内对应所述轴心(10)上端的位置水平设有螺孔(14)，在所述螺孔(14)内设有挤压所述轴心(10)上端以将所述轴心(10)固定的螺钉。
  10. 根据权利要求9所述的拼合式倒角装置，其特征在于，所述轴心(10)上端对应所述螺钉的位置为平面结构。
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