CN110948404A - Split type chamfering device - Google Patents
Split type chamfering device Download PDFInfo
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- CN110948404A CN110948404A CN201911372377.9A CN201911372377A CN110948404A CN 110948404 A CN110948404 A CN 110948404A CN 201911372377 A CN201911372377 A CN 201911372377A CN 110948404 A CN110948404 A CN 110948404A
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- water
- base body
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- thin
- thin tooth
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention relates to a split type chamfering device, which comprises a base body and a plurality of thin tooth sheets; all the thin tooth sheets are fixedly spliced on the side wall of the lower part of the base body and form a conical chamfer body, the lower parts of all the thin tooth sheets extend to the lower part of the base body, one sides of the lower parts of all the thin tooth sheets, which are close to the base body, are abutted against each other, and a drainage channel communicated with a water through hole in the base body is formed between every two adjacent thin tooth sheets. The invention has the beneficial effects that: the chamfering device is formed by splicing a plurality of thin tooth sheets, and a drainage groove is formed between every two adjacent thin tooth sheets, so that the drainage grooves are densely distributed on the working surface of the chamfering device, and cooling water discharged from the drainage grooves can completely cover the working surface, thereby improving the working efficiency and prolonging the service life of the chamfering device; meanwhile, relative comparative deformation rates among all radial points tend to be close, and the deformation problem is relieved, so that the service life of the chamfering device is prolonged.
Description
Technical Field
The invention relates to the field of grinding tool machining tools, in particular to a split type chamfering device.
Background
As shown in fig. 1, the conventional chamfering device (chamfering wheel head or chamfering sleeve capable of being used with a drill bit) is a conical integral structure, a plurality of drainage grooves 4 are formed in the conical surface of the chamfering device, drainage holes 15 which communicate with the inside of the chamfering device and drain water outwards are formed in the drainage grooves 4, and cold water is drained outwards through the drainage holes 15 during chamfering processing to achieve the cooling effect. The axial height of the drain hole 15 is different to drain water in different directions. The chamfering device with the integrated structure has the following defects:
(1) the drain holes 15 cannot be distributed on the conical surface of the chamfering device, so that cold water discharged outwards from the drain holes 15 cannot cover the working surface of the chamfering device completely, and the cooling is not thorough;
(2) because the axial height positions of the water discharging holes 15 are different, when the processing surface is just positioned between the upper water discharging hole 15 and the lower water discharging hole 15, cold water discharged by the water discharging holes 15 cannot reach the processing surface for cooling;
(3) in the machining process, the machining amount of the chamfering device at different positions in the axial direction is not different, as shown in fig. 2, the machining amount of a position a on the chamfering device is larger than that of a position b, so that the abrasion amount of a position a on the chamfering device is larger than that of a position b, namely the abrasion of the chamfering device is larger as the grinding distance H is longer, so that the abrasion of different positions cannot be synchronized (amount), and finally the chamfering device is deformed (dotted line in fig. 2).
(4) The chamfering device has the advantages that the circumferential length of each radial point of the working surface is increased along with the increase of the diameter, namely, the wear resistance and the deformation resistance are increased along with the increase of the diameter, but the processing amount of the circumference where each radial point is located is increased along with the decrease of the diameter, namely, the abrasion amount is increased along with the decrease of the diameter, and the chamfering device is more easily deformed along with the decrease of the diameter.
Disclosure of Invention
In summary, to overcome the deficiencies of the prior art, the present invention provides a split type chamfering apparatus.
The technical scheme for solving the technical problems is as follows: a split type chamfering device comprises a base body and a plurality of thin tooth sheets; all the thin tooth sheets are fixedly spliced on the side wall of the lower part of the base body and form a conical chamfer body, the lower parts of all the thin tooth sheets extend to the lower part of the base body, one sides of the lower parts of all the thin tooth sheets, which are close to the base body, are abutted against each other, and a drainage channel communicated with a water through hole in the base body is formed between every two adjacent thin tooth sheets.
The invention has the beneficial effects that: this chamfering device adopts a plurality of thin teeth pieces concatenation to form, all forms water drainage tank between every two adjacent thin teeth pieces to make chamfering device's the intensive water drainage tank that distributes of working face, water drainage tank outside exhaust cooling hydroenergy covers the working face is whole, improves work efficiency and has prolonged chamfering device's life. Meanwhile, the circumferential thickness of the thin tooth sheets at each radial point of the working surface is consistent, and the cumulative arc length of the circumference is equal, namely the wear resistance and the deformation resistance are consistent; although the amount of machining and wear of the working surface on the circumference of each radial point increases as the diameter decreases, the relative comparative deformation rates between the radial points tend to approach each other relative to prior art chamfering devices, and the problem of deformation is alleviated and the life of the chamfering device is extended.
On the basis of the technical scheme, the invention can be further improved as follows:
furthermore, the side wall of the base body is provided with a jack which is inserted and connected with the upper side of the thin tooth piece, and a water supply groove which is used for communicating the limber hole with the drainage groove is arranged on the side wall of the base body and corresponds to the lower part of the jack.
The beneficial effect of adopting the further scheme is that: the communication between the limber holes and the drainage channel is realized.
Furthermore, a clamping block is arranged on one side of the middle part of the thin tooth sheet, and a clamping groove is formed in the position, corresponding to the clamping block, on the side wall of the base body; and a nut is sleeved on the base body in a threaded manner at a position corresponding to the upper part of the thin toothed sheet, and the nut downwards presses the upper end of the thin toothed sheet to fix the thin toothed sheet at the corresponding position of the base body.
The beneficial effect of adopting the further scheme is that: the fixture block is convenient to assemble and position, and the thin tooth piece is fixed on the base body.
Furthermore, a drainage channel which is communicated with the water through hole and drains water to the outside is arranged at the lower part of the thin tooth sheet.
The beneficial effect of adopting the further scheme is that: and the lower part of the thin tooth sheet is ensured to be drained.
Further, the water drainage channel is a semicircular hole which is provided with a plurality of water drainage channels which are respectively and horizontally arranged at the lower parts of the thin tooth sheets in the vertical axial direction.
The beneficial effect of adopting the further scheme is that: the drainage can be ensured at the lower part of the thin tooth sheet, and the loss of strength caused by the too thin thickness of the thin tooth sheet can be avoided.
And the water retaining mechanism is arranged on the base body and can axially block cold water in the through hole, so that the cold water in the through hole is radially discharged to the drainage groove after passing through the water supply groove.
Further, the water retaining mechanism comprises an axis and a blocking cover; the upper end of the shaft center is fixed in the water through hole, the lower end of the shaft center extends out of the water through hole, and a gap is formed between the shaft center and the inner wall of the water through hole; the blocking cover is fixed at the lower end of the shaft center and is attached to the thin tooth sheet so as to axially block cold water in the water through hole.
The beneficial effect of adopting the further scheme is that: the cold water is radially discharged to cool the working surface.
Further, the device also comprises a joint; one end of the joint is connected with a main shaft of the machine tool, the other end of the joint is connected with one end of the base body, which is far away from the thin tooth piece, and a water supply hole for communicating an external water source with the water through hole is formed in the joint.
The beneficial effect of adopting the further scheme is that: the chamfering device is connected with the main shaft of the machine tool.
Further, the upper end of the shaft center extends into the water supply hole, a screw hole is horizontally arranged in the joint corresponding to the upper end of the shaft center, and a screw for extruding the upper end of the shaft center to fix the shaft center is arranged in the screw hole.
The beneficial effect of adopting the further scheme is that: the fixing of the axle center is realized so as to form the function of pressing the thin tooth sheet.
Furthermore, the position of the upper end of the axle center corresponding to the screw is of a plane structure.
The beneficial effect of adopting the further scheme is that: the extrusion effect of the screw is improved.
Drawings
FIG. 1 is a three-dimensional view of a prior art chamfer grinding head;
fig. 2 is a schematic view of the existing chamfer grinding head in terms of processing wear (the arc dotted line shows the shape of the chamfer grinding head after wear);
FIG. 3 is an overall three-dimensional view of a first embodiment of the present invention;
FIG. 4 is an exploded view of a first embodiment of the present invention (with a thin blade remaining);
FIG. 5 is a cross-sectional view of a first embodiment of the present invention (arrows indicate the flow of cold water);
FIG. 6 is an enlarged view A of FIG. 5 (the thick straight dotted line indicates the worn shape of the thin blade);
FIG. 7 is a cross-sectional view of a substrate according to one embodiment;
FIG. 8 is a three-dimensional view of a base with a thin blade attached thereto according to one embodiment;
FIG. 9 is a three-dimensional view of a first embodiment of the present invention with the shaft, etc. removed and only two thin webs remaining;
FIG. 10 is an enlarged view B of FIG. 9;
FIG. 11 is a three-dimensional view of a second embodiment of the invention (with the clasp removed);
FIG. 12 is an enlarged view C of FIG. 11;
FIG. 13 is a cross-sectional view of FIG. 11;
fig. 14 is an exploded view of a second embodiment of the invention (leaving a thin blade).
In the drawings, the components represented by the respective reference numerals are listed below:
1. the water supply device comprises a base body, 2 parts of thin toothed sheets, 3 parts of water through holes, 4 parts of drainage grooves, 5 parts of inserting buckles, 6 parts of water supply grooves, 7 parts of clamping blocks, 8 parts of clamping grooves, 9 parts of drainage channels, 10 parts of axes, 11 parts of nuts, 12 parts of joints, 13 parts of water supply holes, 14 parts of screw holes, 15 parts of drainage holes, 17 parts of diamonds, 18 parts of cover plates, 19 parts of aluminum pads, 20 parts of clasping rings, 21 parts of spare water tanks.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example one
As shown in fig. 3-5, the split chamfering grinding head comprises a base body 1 and a plurality of thin tooth sheets 2, wherein the thin tooth sheets 2 are internally provided with processing abrasive diamond particles 17. All the thin tooth sheets 2 are fixedly spliced on the side wall of the lower part of the base body 1 and form a conical chamfer body, the lower parts of all the thin tooth sheets 2 extend to the lower part of the base body 1, one sides of the lower parts of all the thin tooth sheets 2 close to the base body 1 are mutually abutted, and a drainage groove 4 communicated with a water through hole 3 in the base body 1 is formed between every two adjacent thin tooth sheets 2. This chamfer bistrique adopts a plurality of thin teeth piece 2 concatenations to form, all forms water drainage tank 4 between every two adjacent thin teeth piece 2 to make the intensive water drainage tank 4 that distributes of working face of chamfer bistrique, water drainage tank 4 outside exhaust cooling hydroenergy covers the working face is whole, improves work efficiency and has prolonged the life of chamfer bistrique. Meanwhile, relative comparative deformation rates among radial points tend to be close, and the deformation problem is relieved, so that the service life of the chamfering device is prolonged, and the specific reasons are as follows:
the invention adopts a thin tooth sheet 2 split structure: the machining amount A of the circumference of a certain radial point of the working surface is equal to the circumference length L of the point and the axial machining distance H of the point, and the larger the radial diameter is, the larger the circumference length L is, but the smaller the circumference length H is. The accumulated arc length of the sheet teeth 2 on the circumference of each radial point of the working surface abrasive material entity is B, and the accumulated arc length is approximately equal everywhere (approximately equal means that the difference is different from different radial points, the curvature of the arc is different, and the arc length is slightly different). As shown in FIG. 2, the cumulative arc length of the thin teeth 2 at the point a on the circumference is B1The cumulative arc length of the thin teeth 2 on the circumference of the point B is B2In which B is1＝B2. Thus, B ═ n × l, (n-the number of lamella teeth, l-the circumferential arc length of the lamella teeth), the abrasive grainThe volume has minimal associated diameter variation with each point.
The chamfer device of the existing integrated structure: the processing amount A of the circle where the radial certain point of the working surface is located is equal to the circumferential length L of the point and the axial processing distance H of the point. The working surface abrasive material entity has the circumference L of each radial point in direct proportion to the diameter. As shown in FIG. 2, the circumference L of the circle at point a is B1The circumference L of the circle at point B is B2In which B is1＞B2(the diameter of the point a is larger than that of the point b). Thus, B ═ L, the abrasive entities correlate more with the change in diameter at each point.
And the chamfer device is used for processing the workpiece with a smaller amount at the large end than at the small end. Therefore, the deformation rate of the large end is smaller than that of the small end. In conclusion, compared with the prior art, the invention reduces the abrasive material entity of the big end, thereby increasing the deformation rate of the big end and approaching the deformation rate of the small end, namely, the deformation problem of the chamfering device is relieved, and the service life of the chamfering device is prolonged. In addition, the circumferential thickness of the thin tooth piece 2 at each radial point of the working surface is consistent, and the cumulative arc length of the circumference is equal, so that the wear resistance and the deformation resistance are consistent.
As shown in fig. 7 and 8, the side wall of the base 1 is provided with an insertion hole 5 inserted into the upper side of the thin blade 2, and a water supply tank 6 for communicating the water passage hole 3 with the drain tank 4 is provided on the side wall of the base 1 corresponding to the insertion hole 5. A clamping block 7 is arranged on one side of the middle of the thin tooth sheet 2, and a clamping groove 8 is arranged on the side wall of the base body 1 corresponding to the clamping block 7. A nut 11 is screwed on the base body 1 at a position corresponding to the upper part of the thin toothed plate 2, and the nut 11 presses the upper end of the thin toothed plate 2 downwards to fix the thin toothed plate 2 at the corresponding position of the base body 1. The upper side of the thin tooth piece 2 is inserted into the jack 5 of the base body 1 to realize radial positioning of the thin tooth piece 2, and the clamping block 7 of the thin tooth piece 2 is clamped in the clamping groove 8, so that the nut 11 is rotated to downwards extrude the upper end of the thin tooth piece 2, and the axial positioning of the thin tooth piece 2 is realized. By the mode, the thin tooth sheet 2 can be fast and fixedly spliced on the base body 1, and the positioning is reliable.
As shown in fig. 9 and 10, the lower part of the thin teeth piece 2 is provided with a water drainage channel 9 which is communicated with the water through hole 3 and drains water to the outside, and the water drainage channel 9 ensures that the lower parts of the thin teeth piece 2 can drain water even if the lower parts abut against each other, thereby ensuring the cooling effect. Preferably: the drainage channel 9 is a semicircular hole which is provided with a plurality of drainage channels which are respectively and horizontally arranged at the lower part of the thin toothed sheet 2 in the vertical axial direction. The semicircular hole drainage channel 9 can ensure that the lower part of the thin tooth piece 2 has drainage and can also avoid the phenomenon that the thin tooth piece 2 loses strength due to too thin thickness.
The chamfering grinding head further comprises a water retaining mechanism which axially blocks cold water in the limber hole 3 so that the cold water in the limber hole 3 passes through the water supply groove 6 and then is radially discharged to the water discharge groove 4, and the water retaining mechanism is arranged on the substrate 1. The limiting mechanism comprises an axis 10 and a blocking cover. The upper end of the shaft center 10 is fixed inside the water through hole 3, the lower end of the shaft center extends out of the water through hole 3, and a gap is formed between the shaft center 10 and the inner wall of the water through hole 3; the blocking cover is fixed at the lower end of the shaft center 10 and is attached to the thin tooth piece 2 so as to axially block cold water in the water through hole 3. The upper end of the shaft center 10 extends into the water supply hole 13, a screw hole 14 is horizontally arranged in the joint 12 corresponding to the upper end of the shaft center, and a screw for pressing the upper end of the shaft center 10 to fix the shaft center 10 is arranged in the screw hole. The upper end of the shaft center 10 corresponding to the position of the screw is of a plane structure. One end of the joint 12 is connected with a main shaft of the machine tool, the other end of the joint is connected with one end of the basal body 1 far away from the thin tooth piece 2, and a water supply hole 13 for communicating an external water source with the water through hole 3 is arranged in the joint 12. The outside water source firstly goes into supply hole 13 back to limbers 3 again, and the partly outside discharge through water drainage tank 4 of cold water in the limbers 3 can be cooled off the working face through supply tank 6 again, and partly cold water passes through water drainage 9 and outwards discharges and cool off the working face in addition to realize that cooling area can cover whole working face, guarantee the cooling effect.
Example two
The thin tooth plate 2 split type structure in the first embodiment can also be applied to a chamfer cover which can be used with a drill bit, as shown in fig. 11-14, the thin tooth plate 2 is fixedly spliced on the side wall of the lower part of the base body 1 through a cover plate 18 and an aluminum pad 19 to form a conical chamfer body, the base body 1 is connected with a main shaft of a corresponding machine tool through a holding ring 20, a drainage groove 4 which is communicated with a water through hole 3 in the base body 1 is formed between two adjacent thin tooth plates 2, and a drainage channel 9 which is communicated with the water through hole 3 and drains water to the outside is arranged at the lower part of the thin tooth plate 2. Through the structure, the chamfer cover can form the drainage channel 4 and the drainage channel 9 between every two adjacent thin tooth sheets 2, so that the drainage channel 4 and the drainage channel 9 are densely distributed on the working surface of the chamfer cover, the cooling water discharged outwards from the drainage channel 4 and the drainage channel 9 can completely cover the working surface, and the chamfer cover has the advantages of improving the working efficiency, prolonging the service life of the chamfer cover and the like. In addition, a spare water tank 21 is arranged at the lower part of the base body 1, and after the thin tooth piece 2 is worn to a certain extent (when the spare water tank 21 is exposed), the adjacent thin tooth piece 2 can still normally pass through the spare water tank 21.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A split type chamfering device is characterized by comprising a base body (1) and a plurality of thin tooth sheets (2); all the thin tooth sheets (2) are fixedly spliced on the side wall of the lower part of the base body (1) to form a conical chamfer body, the lower parts of all the thin tooth sheets (2) extend to the lower part of the base body (1), one sides of the lower parts of all the thin tooth sheets (2) close to the base body (1) are abutted against each other, and a drainage groove (4) communicated with a water through hole (3) in the base body (1) is formed between every two adjacent thin tooth sheets (2).
2. The split chamfering device according to claim 1, wherein a hole (5) for inserting an upper side of the serration (2) is provided on a side wall of the base body (1), and a water supply groove (6) for communicating the water passage hole (3) with the drain groove (4) is provided on the side wall of the base body (1) corresponding to a lower portion of the hole (5).
3. The split chamfering device according to claim 1, wherein a clamping block (7) is arranged on one side of the middle of the thin tooth plate (2), and a clamping groove (8) is arranged on the side wall of the base body (1) at a position corresponding to the clamping block (7); a nut (11) is sleeved on the base body (1) in a threaded manner at a position corresponding to the upper part of the thin toothed sheet (2), and the nut (11) downwards presses the upper end of the thin toothed sheet (2) to fix the thin toothed sheet (2) at a corresponding position of the base body (1).
4. The split chamfering apparatus according to claim 1, wherein a drain passage (9) communicating with the water passage hole (3) and discharging water to the outside is provided at a lower portion of the thin blade (2).
5. The split chamfering apparatus according to claim 4, wherein the water drain passage (9) is a semicircular hole provided in plurality and horizontally arranged up and down in the lower portion of the thin blade (2), respectively.
6. The split-type chamfering apparatus according to claim 1, further comprising a water blocking means for blocking the cold water in the water passage hole (3) in an axial direction so that the cold water in the water passage hole (3) is discharged radially toward the water discharge groove (4) after passing through the water supply groove (6), the water blocking means being installed on the base body (1).
7. The split chamfering apparatus according to claim 6, wherein the water blocking mechanism includes a hub (10) and a shield cover; the upper end of the shaft center (10) is fixed inside the water through hole (3), the lower end of the shaft center extends out of the water through hole (3), and a gap is formed between the shaft center (10) and the inner wall of the water through hole (3); the blocking cover is fixed at the lower end of the shaft center (10) and is attached to the thin tooth piece (2) so as to axially block cold water in the water through hole (3).
8. The split chamfer apparatus according to claim 7, further comprising a joint (12); one end of the joint (12) is connected with a main shaft of the machine tool, the other end of the joint is connected with one end of the base body (1) far away from the thin tooth piece (2), and a water supply hole (13) for communicating an external water source with the water through hole (3) is formed in the joint (12).
9. The split-type chamfering apparatus according to claim 8, wherein an upper end of the shaft (10) extends to an inside of the water supply hole (13), a screw hole (14) is horizontally provided in the joint (12) at a position corresponding to the upper end of the shaft (10), and a screw for pressing the upper end of the shaft (10) to fix the shaft (10) is provided in the screw hole (14).
10. The split chamfering apparatus according to claim 9, wherein a position of an upper end of the shaft center (10) corresponding to the screw is a planar structure.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372377.9A CN110948404A (en) | 2019-12-27 | 2019-12-27 | Split type chamfering device |
| EP20908116.5A EP4082719A4 (en) | 2019-12-27 | 2020-12-17 | Spliced chamfering device |
| PCT/CN2020/137273 WO2021129513A1 (en) | 2019-12-27 | 2020-12-17 | Spliced chamfering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911372377.9A CN110948404A (en) | 2019-12-27 | 2019-12-27 | Split type chamfering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110948404A true CN110948404A (en) | 2020-04-03 |
Family
ID=69984298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911372377.9A Pending CN110948404A (en) | 2019-12-27 | 2019-12-27 | Split type chamfering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110948404A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618712A (en) * | 2020-05-15 | 2020-09-04 | 桂林创源金刚石有限公司 | Grinding wheel base body with communication structure |
| WO2021129513A1 (en) * | 2019-12-27 | 2021-07-01 | 桂林创源金刚石有限公司 | Spliced chamfering device |
| WO2021228170A1 (en) * | 2020-05-15 | 2021-11-18 | 桂林创源金刚石有限公司 | Special-shaped wheel having positive correlation water passing structure for full-grinding surface |
-
2019
- 2019-12-27 CN CN201911372377.9A patent/CN110948404A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129513A1 (en) * | 2019-12-27 | 2021-07-01 | 桂林创源金刚石有限公司 | Spliced chamfering device |
| CN111618712A (en) * | 2020-05-15 | 2020-09-04 | 桂林创源金刚石有限公司 | Grinding wheel base body with communication structure |
| WO2021228170A1 (en) * | 2020-05-15 | 2021-11-18 | 桂林创源金刚石有限公司 | Special-shaped wheel having positive correlation water passing structure for full-grinding surface |
| CN111618712B (en) * | 2020-05-15 | 2024-05-14 | 桂林创源金刚石有限公司 | Grinding wheel matrix with communication structure |
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