CN210334475U - Large-diameter deep hole drill without tool holder - Google Patents
Large-diameter deep hole drill without tool holder Download PDFInfo
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- CN210334475U CN210334475U CN201921062153.3U CN201921062153U CN210334475U CN 210334475 U CN210334475 U CN 210334475U CN 201921062153 U CN201921062153 U CN 201921062153U CN 210334475 U CN210334475 U CN 210334475U
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Abstract
The utility model belongs to the technical field of large-diameter deep hole machining, in particular to a large-diameter deep hole drill without using a tool holder, which comprises a cutter body and an interface fixedly connected with the cutter body, wherein the front end of the peripheral surface at the top end of the cutter body is provided with two supporting plates, the top of the cutter body is provided with a first chip removal groove and a second chip removal groove which are arranged diagonally, the side wall of the first chip removal groove is provided with a central blade, a first middle blade and a peripheral blade which are sequentially distributed from the center to the edge of the cutter body, the inner side cutting edge fillet of the central blade passes through the center of the cutter body, the height of the central blade is lower than that of the first chip, and a second middle blade and a third middle blade are sequentially arranged on the side wall of the second chip groove from the center of the cutter body to the outer edge, and the vertical heights of the third middle blade, the first middle blade and the second middle blade from the edge of the cutter body to the cutting edge of the cutter body in the center direction are sequentially reduced. The hole straightness and cylindricity that this deep hole bored processing are better, have prolonged the life of cutter.
Description
Technical Field
The utility model belongs to the technical field of major diameter deep hole machining, especially, relate to a major diameter deep hole bores that does not use cutter holder.
Background
In the first world war, a large number of firearms are widely used in large-scale wars, particularly firearms and small-diameter gun platforms, are popular with soldiers due to convenience in carrying and transportation, and are widely applied to wars. If continue to use traditional fluted drill and flat drill etc. traditional technology need go rough machining out the drilling with the fluted drill when processing the deep hole, then the reaming of reuse traditional reamer, at last carry out finish reaming etc. with the reamer in order to guarantee the precision and the surface quality of deep hole again, though can process the service standard, but also have a lot of defects to exist, for example fluted drill when processing the deep hole, its drill bit rigidity is poor, vibrations are big, straightness accuracy and cylindricity are very poor, the shape error that leads to is difficult to repair. The complicated and tedious process flow can not meet the requirements of a huge number of novel weapons and mechanical equipment. At that time, the high-precision deep hole machining becomes a first challenge for mechanical engineers, and deep hole drilling is carried out at the same time, so that the deep hole drilling is greatly optimized and developed, but a plurality of problems exist. More and more problems of large size requirement, high precision requirement, service life requirement of cutters and blades, requirement of simple operation, most important economic requirement and the like emerge endlessly. And the common large-size deep hole drill has more accessories and simultaneously contains a tool holder, so the use is more complicated. How to improve the economy of the deep hole drill on the premise of ensuring perfect drilling is a current problem.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of above-mentioned prior art, the utility model provides a do not use major diameter deep hole of cutter holder bores, and the straightness accuracy and the cylindricity in the hole of processing are better, have prolonged the life of cutter, for the deep hole of taking the cutter holder bores, the utility model discloses satisfying the cutter life-span, realized the jumbo size deep hole drilling of better economic nature under the prerequisite of size required precision and simple easy operation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a large-diameter deep hole drill without using a tool holder comprises a tool body and a connector, wherein the tool body is fixedly connected with the connector, two support plates are arranged at the front end of the peripheral surface at the top end of the tool body, four threads are arranged at the periphery of the connector, the large-diameter deep hole drill is characterized in that the top of the tool body is in a conical surface shape, a first chip removal groove and a second chip removal groove which are diagonally arranged are arranged at the top of the tool body, a central blade, a first middle blade and a peripheral blade are arranged at the top of the tool body and along the side wall of the first chip removal groove, the central blade, the first middle blade and the peripheral blade are sequentially distributed from the center to the edge of the tool body, the inner side cutting edge fillet of the central blade passes through the center of the tool body, the height of the central blade is lower than that of the first chip removal groove and the center height of the tool body, and a second middle blade and a third middle blade are sequentially arranged at the top, the first middle blade, the second middle blade and the third middle blade are positioned in the middle diameter of the cutter body, the vertical height of the cutting edge of the first middle blade closest to the peripheral blade is lower than that of the cutting edge of the peripheral blade, and the vertical heights of the cutting edges of the third middle blade, the first middle blade and the second middle blade from the edge of the cutter body to the center of the cutter body are sequentially reduced.
The peripheral blade and the vertical direction form a feeding and avoiding angle of 1.25 degrees.
The peripheral blade, the first middle blade, the central blade, the second middle blade and the third middle blade are all fixed in blade grooves of the cutter body through screws and are arranged in a straight line shape.
The two supporting plates are fixedly connected with the cutter body through screws, one of the supporting plates is positioned on an extension line of the axes of the second middle blade and the third middle blade, the other supporting plate is positioned on the outer peripheral surface of the cutter body, and an included angle between the center of the two supporting plates and the central connecting line of the cutter body is 90-120 degrees.
Two the backup pad is 0.43 back taper setting.
The first, second, third, center and peripheral inserts are 800 drill inserts.
The first chip groove and the second chip groove are large wide-mouth chip grooves.
The utility model has the advantages that: the large-diameter deep hole drill in the prior art is provided with the cutter holder, the cutter body of the utility model has a diameter of more than 65mm, does not contain the cutter holder, and directly fixes five blades in the cutter body blade groove, so that compared with the cutter holder, the large-diameter deep hole drill has the advantages of simple structure, less material consumption and convenient use; compared with the 801 drill bit, the manufacturing method is simple and easy to implement, the period is short, the processing technology is simple, a lot of working time and raw materials can be saved in each process, and the economical efficiency is improved. The five blades are 800 blades, the three middle blades are reasonably overlapped with the central blade and the peripheral blades, so that the blades are uniformly stressed, and the original shape and structure of the cutter body are further not changed. The peripheral blades are arranged at a certain angle with the vertical direction, the central blade is arranged through the center of the cutter body, and the three middle blades and the other two blades adopt proper lap joint distances, so that the interference problem generated in processing is avoided; two backup pads become certain tapering and put, improve the centering nature and the stability of cutter body, make the cutting more steady under the supporting role of two backup pads, guarantee the atress of cutter body even to the life of extension cutter, and the straightness accuracy and the cylindricity in the hole of drilling are better. This novel little blade is used to many choices, the smear metal is littleer under the circumstances of assurance intensity like this, and two big wide-mouth chip grooves that cooperate and ordinary major diameter deep hole bores difference are under the effect of high-pressure cutting fluid, can be better discharge the smear metal outside the brill body.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a rear view of the present invention;
fig. 4 is a top view of the present invention.
In the figure, 1, a central blade, 2, a first middle blade, 3, a blade screw, 4, a peripheral blade, 5, a first chip discharge groove, 6, a cutter body, 7, a wrench clamping position, 8, an interface, 9, a second middle blade, 10, a third middle blade, 11, a support plate, 12, a positioning surface, 13, a four-head thread, 14 and a second chip discharge groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, which are only used for explaining the present invention, and are illustrative of the embodiments of the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terminology used in the description is intended to be interpreted broadly unless explicitly stated or limited otherwise. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, the utility model provides a large diameter deep hole drill without cutter holder, including cutter body 6 and interface 8, connect through locating surface 12 between cutter body 6 and the interface 8, the interface 8 periphery is equipped with four-head screw 13, and cutter body 6 lower extreme periphery is equipped with spanner screens 7, and cutter body 6 top periphery front end is equipped with two backup pads 11, and two backup pads 11 become certain tapering and put, are 0.43 back taper setting preferably, can effectively improve the centering nature and the stability of cutter body 6.
The top of the cutter body 6 is in a conical surface shape, a first chip groove 5 and a second chip groove 14 which are arranged diagonally are arranged at the top of the cutter body, and in order to prevent the chips of the blade from being piled up, the first chip groove 5 and the second chip groove 14 are both provided with wide-mouth chip grooves.
The top of the cutter body 6 is provided with a central blade 1, a first middle blade 2 and a peripheral blade 4 along the side wall of the first chip groove 5, the central blade 1, the first middle blade 2 and the peripheral blade 4 are sequentially distributed from the center to the edge of the cutter body 6, the inner side cutting edge fillet of the central blade 1 passes through the center of the cutter body 6, the height of the central blade 1 is slightly lower than the height of the first chip groove 5 and the center height of the cutter body 6, and the cutter body plays a role in protecting the blades in the cutting process.
The peripheral blade 4 and the vertical direction form a certain feeding avoiding angle, wherein the feeding avoiding angle is 1.25 degrees, and the effect is better. The top of the cutter body 6, along the cutter body 6 center outward edge on the second chip groove 14 lateral wall have second middle blade 9 and third middle blade 10 in proper order, first middle blade 2, second middle blade 9, third middle blade 10 are located the cutter body 6 pitch diameter, the middle blade nearest to peripheral blade 4 namely the vertical height of the first middle blade 2 blade edge is lower than the vertical height of the peripheral blade 4 blade edge, the third middle blade 10, first middle blade 2, the vertical height of the second middle blade 9 blade edge from the cutter body 6 edge to the cutter body 6 center direction reduces in proper order.
The peripheral blade 4, the first middle blade 2, the central blade 1, the second middle blade 9 and the third middle blade 10 are all fixed in blade grooves of the cutter body 6 by blade screws 3 and are arranged in a straight line.
The two supporting plates 11 are fixedly connected with the cutter body 6 through the supporting plates 11 by screws, one supporting plate 11 is positioned on the extension line of the axes of the second middle blade 9 and the third middle blade 10, the other supporting plate 11 is positioned on the peripheral surface of the cutter body 6, and the included angle between the center of the two supporting plates 11 and the central connecting line of the cutter body 6 is 90-120 degrees.
The five blades are reasonably overlapped to form a perfect cutting edge, so that the complete cutting function from the center to the excircle can be formed, the cutting force is dispersed to the maximum extent, and the cutter body 6 is prevented from being deformed under stress.
The arrangement of the blades plays a crucial role in order to make the life of the five blades and the cutter body 6 longer. The peripheral blades 4 are placed at a certain angle with the vertical direction, the central blade 1 is placed over the center, the three middle blades and the other two blades are reasonably placed at a proper lap joint distance and the two supporting plates 11, so that the problem of interference generated in machining can be avoided, the cutter body 6 can be uniformly stressed, the straightness and the cylindricity of a machined hole are better, and the service life of the cutter is prolonged.
The utility model discloses satisfying under the circumstances of intensity and blade load, having selected small blade as far as possible and having carried out the drilling, small blade cutting makes the blade become littleer to the blade becomes certain angle and puts, the formation that does benefit to the smear metal more, in addition utility model has taken and has bored different chip grooves with jumbo size deep hole in the past, and this chip groove is bigger, synthesizes above factor under the drive of the fast-speed cutting fluid of high pressure, and the drilling body is discharged more easily to produced smear metal. Ordinary jumbo size deep hole bores the accessory than many, and it is more miscellaneous to use, the utility model discloses cancelled jumbo size deep hole bores the cutter holder, directly passed through the fix with screw on cutter body 6 the blade, such method makes processing more convenient, has reduced process flow, and then reduces man-hour, has guaranteed the economic nature of cutter. Therefore, the novel drilling tool has the advantages that the large-size deep hole drilling with better economical efficiency is realized on the premise of meeting the requirements of the service life and the size precision and being simple and easy to operate.
The above detailed description is for one embodiment of the present invention, but the above description is only for the preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (7)
1. A large-diameter deep hole drill without using a tool holder comprises a tool body and an interface, wherein the tool body is fixedly connected with the interface, two supporting plates are arranged at the front end of the outer peripheral surface at the top end of the tool body, the large-diameter deep hole drill is characterized in that the top of the tool body is in a conical surface shape, a first chip removal groove and a second chip removal groove which are arranged diagonally are arranged at the top of the tool body, a central blade, a first middle blade and a peripheral blade are arranged on the side wall of the first chip removal groove and sequentially distributed from the center to the edge of the tool body, the inner side fillet cutting edge of the central blade passes through the center of the tool body, the height of the central blade is lower than that of the first chip removal groove and that of the tool body, a second middle blade and a third middle blade are sequentially arranged on the side wall of the second chip removal groove and from the center to the outer edge of the tool body, and the vertical height of the first middle blade closest to the The vertical heights of the cutting edges of the third middle blade, the first middle blade and the second middle blade from the edge of the cutter body to the center of the cutter body are reduced in sequence.
2. The gun drill of claim 1 wherein said peripheral cutting insert is at a feed relief angle of 1.25 degrees from vertical.
3. The gun drill of claim 1 wherein said peripheral insert, said first intermediate insert, said central insert, said second intermediate insert, and said third intermediate insert are all secured by screws in insert pockets in said cutter body and are in a "straight" configuration.
4. The deep hole drill as claimed in claim 1, wherein two of the support plates are fixedly connected to the cutter body by screws, one of the support plates is located on an extension of the axes of the second intermediate blade and the third intermediate blade, the other support plate is located on the outer circumferential surface of the cutter body, and an angle between the center of the two support plates and a line connecting the centers of the cutter body is between 90 ° and 120 °.
5. The gun drill according to claim 1, wherein said two support plates are arranged in a 0.43 ° inverted cone.
6. The deep hole drill of claim 1, characterized in that the first middle insert, the second middle insert, the third middle insert, the center insert, the peripheral insert are 800 drill inserts.
7. The deep hole drill of claim 1, wherein said first flutes and said second flutes are large wide mouth flutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921062153.3U CN210334475U (en) | 2019-07-08 | 2019-07-08 | Large-diameter deep hole drill without tool holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921062153.3U CN210334475U (en) | 2019-07-08 | 2019-07-08 | Large-diameter deep hole drill without tool holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210334475U true CN210334475U (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921062153.3U Active CN210334475U (en) | 2019-07-08 | 2019-07-08 | Large-diameter deep hole drill without tool holder |
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| CN (1) | CN210334475U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743128A (en) * | 2020-12-30 | 2021-05-04 | 浙江欣兴工具有限公司 | Welded BTA deep hole bores |
| CN115415581A (en) * | 2022-09-23 | 2022-12-02 | 东莞市纳百医疗科技有限公司 | Deep hole drill bit structure |
-
2019
- 2019-07-08 CN CN201921062153.3U patent/CN210334475U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743128A (en) * | 2020-12-30 | 2021-05-04 | 浙江欣兴工具有限公司 | Welded BTA deep hole bores |
| CN115415581A (en) * | 2022-09-23 | 2022-12-02 | 东莞市纳百医疗科技有限公司 | Deep hole drill bit structure |
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