MX2014016026A - Deep hole machining apparatus and deep hole machining method. - Google Patents
Deep hole machining apparatus and deep hole machining method.Info
- Publication number
- MX2014016026A MX2014016026A MX2014016026A MX2014016026A MX2014016026A MX 2014016026 A MX2014016026 A MX 2014016026A MX 2014016026 A MX2014016026 A MX 2014016026A MX 2014016026 A MX2014016026 A MX 2014016026A MX 2014016026 A MX2014016026 A MX 2014016026A
- Authority
- MX
- Mexico
- Prior art keywords
- cutting tool
- guide bushing
- hole
- machining apparatus
- deep hole
- Prior art date
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- Auxiliary Devices For Machine Tools (AREA)
- Drilling And Boring (AREA)
- Drilling Tools (AREA)
Abstract
[Technical Problem] To provide a deep hole machining apparatus capable of increasing the durability of a guide bush. [Solution] The deep hole machining apparatus 1 performs a hole cutting or the like in the workpiece 2. The guide bush 30, which is deposed radially outward of the cutting tool 20 separately from the outer periphery of the cutting tool 20, includes the injection hole 31 for injecting oil toward the outer periphery of the cutting tool 20. Accordingly, since an oil film is formed between the inner wall of the guide bush 30 and the cutting tool 20, the cutting tool 20 rotates out of contact with the inner wall of the guide bush 30.
Description
DEEP HOLE MACHINING APPARATUS AND METHOD OF
DEEP HOLE MACHINING
Field of the Invention
The present invention relates to a deep hole machining apparatus and a deep hole machining method.
Background of the Invention
A deep-hole machining apparatus is known for machining a hole in a workpiece made of metal or resin using, for example, a cutting tool such as a drill, and finishing the inner wall of the hole using a cutting tool such as a reamer. Here, the term "deep hole" means a hole, the depth of which is larger than the diameter of the hole. Japanese Patent Application Laid-Open No. 2002-321111 discloses this deep hole machining apparatus which includes a guide bushing located radially outwardly of a cutting tool for cutting a hole in a workpiece. The guide bushing suppresses lateral vibration of the edge of the cutting tool when the cutting tool rotates at a high speed.
However, in the deep-hole machining apparatus described in the above patent document, due to
REF.252992
because the cutting tool contacts the inner wall of the guide bushing, a large amount of heat is generated due to friction between them, and the guide bushing is subjected to abrasion when the cutting tool is rotated to a high speed. As a result, there is concern that the durability of the guide bushing could be degraded, and that its service life could be shortened.
Summary of the Invention
An exemplary embodiment provides a deep hole machining apparatus that includes:
a cutting tool driven to rotate about an axis thereof for cutting a hole in a workpiece or for finishing a hole formed in a workpiece;
a rotating device that drives the cutting tool to rotate; and a guide bushing in which the cutting tool is inserted with a partition with an inner wall of the guide bushing, the guide bushing is formed with at least one injection hole for the injection of a gas or liquid towards the periphery outside of the cutting tool that is being driven by the rotating device.
The exemplary embodiment also provides a method of machining a deep hole in a piece of
Work that uses the previous apparatus of deep hole machining, the method comprises:
a step of injecting the injection of a gas or a liquid from the injection hole of the guide socket, and a step of adjusting the pressure of the adjustment of the pressure of the gas or liquid to a value where the inner wall of the socket The guide and the cutting tool are kept out of contact with each other.
In accordance with the exemplary embodiment, a deep hole machining apparatus and a deep hole machining method is provided which can increase the durability of a guide bushing for guiding a cutting tool.
Other advantages and features of the invention will be apparent from the following description which includes the figures and the claims.
Brief Description of the Figures
In the attached figures:
Figure 1 is a diagram showing the structure of a deep hole machining apparatus according to a first embodiment of the invention;
Figure 2 is a cross-sectional view of the remote end portion of a cutting tool included in the deep hole machining apparatus according to the first embodiment of the invention;
Figure 3 is a cross-sectional view of a guide dowel included in the deep hole machining apparatus according to the first embodiment of the invention;
Figure 4 is an amplification view of the guide bushing;
Figure 5 is a diagram explaining the movement of the cutting tool at the time of cutting a deep hole;
Figure 6 is an amplification view of a guide bushing included in a deep hole machining apparatus according to a second embodiment of the invention;
Figure 7 is a cross-sectional view of a guide bushing included in a deep-hole machining apparatus according to a third embodiment of the invention;
Figure 8 is an amplification view of a guide bushing included in a deep hole machining apparatus according to a fourth embodiment of the invention;
Figure 9 is a perspective view of a deep hole machining apparatus according to a fifth embodiment of the invention;
Figure 10 is a cross-sectional view of Figure 9 taken along the line X-X;
Figure 11 is a diagram showing the structure of the deep hole machining apparatus according to the fifth embodiment of the invention;
Figure 12 is a perspective view of a deep hole machining apparatus according to a sixth embodiment of the invention;
Figure 13 is a cross-sectional view of Figure 12 taken along line XIII-XIII;
Figure 14 is a perspective view of a deep hole machining apparatus according to a seventh embodiment of the invention;
Figure 15 is a cross-sectional view of Figure 14 taken along the line XV-XV; Y
Figures 16 and 17 are diagrams showing the structure of the deep hole machining apparatus according to the seventh embodiment of the invention;
Detailed description of the invention
In the following described embodiments, each of the parts, devices and portions having the same structures are indicated by the same reference numbers or characters.
First Modality
A deep hole machining apparatus 1 according to a first embodiment of the invention is described with reference to Figures 1-5. The machining device
Deep hole 1 is for the machining of a deep hole in a workpiece 2 made, for example, of metal or resin. As shown in Figure 1, the deep-hole machining apparatus 1 includes a rotating device 10, a cutting tool 20 and a guide bushing 30. The rotating device 10 includes a small motor such as a small motor. stem. The cutting tool 20 is placed in the rotation device 10 at its axial end, and is driven by the rotation device 10 to rotate about the axis.
As shown in Figure 2, the cutting tool 20 is of the type called BTA (Hole Cutting and Cutting Association) in which a supply channel 22 and a discharge channel 23 are radially located inside its outer peripheral wall. The cutting tool 20 is formed with the guide walls 21 having an annular shape at its outer periphery. The supply channel 22 extends in the axial direction of the cutting tool 20 and opens towards the distal side of the cutting tool 20 beyond the guide walls 21. The supply channel 22 is for the supply of the cutting the far end of the cutting tool 20. The discharge channel 23 is formed in the axial center of the cutting tool 20 and opens towards the distal end of the cutting tool 20. The channel
of discharge 23 is for the discharge of the cutting fluid together with the chips or burrs that originate from the cut. In Figure 2, the arrows A-E indicate the direction of flow of the cutting liquid.
The guide walls 21 contact, in sliding manner, with the inner wall of a hole being cut into the workpiece 2 when the distal end portion of the cutting tool 20 enters the hole to suppress or eliminate the lateral vibration of the cutting tool 20. Incidentally, the guide wall 21 can not suppress lateral vibration of the cutting tool 20 until the distal end portion of the cutting tool 20 enters the hole.
As shown in Figure 1, the cutting tool 20 can be inserted into the guide bushing 30 located in the vicinity of the workpiece 2. Because the guide bushing 30 is located in the vicinity of the workpiece. work 2, the cutting tool 20 can be suppressed from the lateral vibration around the positioning point of the rotation device 10 such as a fixed point of support or axis. The supply channel 22 and the discharge channel 23 of the cutting tool 20 inserted in the guide bushing 20 are radially provided within the outer peripheral wall of the cutting tool 20. Consequently, because there is no slot or
similar in the outer periphery, the cross section of the cutting tool 20 is circular.
As shown in Figures 3 and 4, the guide socket 30 is located slightly spaced from the outer periphery of the cutting tool 20. The guide sleeve 30 includes an injection hole 31, the restriction portions 32 and a part 2. The injection hole 31 opens towards the inner periphery wall of the guide bushing 30, so that the gas or liquid can be injected radially into the interior of the guide bushing 30. In this embodiment, the oil supplied to the from an oil pressure supply device is injected at a predetermined pressure towards the outer periphery of the cutting tool 20 of the injection hole 31. The groove portion 33 formed in the inner periphery wall of the guide bushing 30 can storing therein the injected oil of the injection hole 31. The slot part 33 includes a slot X 34 extending in a pattern X from the opening of the iny hole Ection 31 and a plurality of depressions 35.
The restriction part 32 is formed in the inner wall of the guide bushing 30 in a part where the slot X 33 is not formed. The restriction portion 32 prevents a quantity of gas or liquid flow from escaping between the outer periphery of the cutting tool 20 and the
guide bush 30. In Figure 3, the arrow F indicates the flow of the oil supplied to the injection hole 31, and the arrows G indicate the flows of the oil escaping from between the outer periphery of the cutting tool 20 and each part of restriction 32. The oil pressure stored between the outer periphery of the cutting tool 20 and the guide bushing 30 can be adjusted by adjusting the flow velocity of the injected oil from the opening of the injection hole 31 and the speed of flow of the oil escaping from between the outer periphery of the cutting tool 20 and each restriction part 32. The flow velocity of the leaking or leaking oil between the outer periphery of the cutting tool 20 and the part of the restriction 32 depends on the distance d between them. Incidentally, the oil escaping from each restriction part 32 can be used by removing the foreign matter from the oil using a filter (not shown).
Next, a deep hole machining method using the deep hole machining apparatus described above is explained. 1. The deep hole machining method includes an injection step, a pressure adjustment stage and a cutting stage. of hole. In the injection stage, the oil is supplied from the oil pressure supply device 3 to the
oil injection hole 31 of the guide bush 30, so that the oil is injected from the opening of the injection hole 31. In the pressure adjustment stage, the pressure of the oil supplied from the pressure supply device of the Oil 3 to the oil injection hole 31 is adjusted to this value so that the cutting tool 20 can be kept out of contact with the inner wall of the guide bush 30. The edge of the cutting tool 20 has a greater vibration lateral when its rotational speed is higher. In consecuense, it is preferable to increase the oil pressure supplied from the oil pressure supply device 3 to the injection hole 31 with the increase in the rotational speed of the cutting tool 20. The oil pressure supplied from the oil pressure supply device 3 to the injection hole 31 can be reduced by reducing the distance d between the outer periphery of the cutting tool 20 and the restriction part 32. On the other hand, the oil pressure supplied from the oil pressure supply device 3 to the hole injection 31 has to be increased with increasing distance d between the outer periphery of the cutting tool 20 and the restricting part 32.
In the hole cutting step, the cutting tool 20 is driven by the rotation device 10 for
rotate in order to cut a hole in the workpiece 2. At this time, the cutting oil is supplied to the distal end of the cutting tool 20 through the supply channel 22 to discharge the chips that originate from cutting together with the cutting oil through the discharge channel 23. The cutting tool 20 is suppressed from the lateral vibration by the guide socket 30 before the annular guide walls 21 formed in the far end portion of the cutting tool 20 enter in sliding contact with the inner wall of the hole being cut in the workpiece 2. The guide bushing 30 suppresses the lateral vibration of the cutting tool 20 without contacting the cutting tool 20.
Figure 5 shows the manner in which the guide bushing 30 suppresses lateral vibration of the cutting tool 20. In Figure 5, the slot portion 33 of the guide bushing 30 is omitted from the illustration. In the hole cutting step, as the rotational speed of the cutting tool 20 increases, the centrifugal force is increased causing the distal end of the cutting tool 20 to perform a lateral vibration, as a result of which the The central axis 02 of the cutting tool 20 rotates about the central axis 01 of the guide bushing 30. In FIG. 5, the chain line a and the arrows b show the values of the oil pressure between
the inner wall of the guide bushing 30 and the cutting tool 20 at various points. The oil pressure is higher when the distance between the inner wall of the guide bushing 30 and the cutting tool 20 is smaller, and is lower when the distance between the inner wall of the guide bushing 30 and the cutting tool 20. Accordingly, an oil film g is formed between the inner wall of the guide bushing 30 and the cutting tool 20 due to the reaction force of the oil, and the cutting tool 20 rotates out of contact with the cutting tool 20. the inner wall of the guide bushing 30. Therefore, because there is no fluctuation of the torque or torque due to friction between the inner wall of the guide bushing 30 and the cutting tool 20, the lateral vibration of the cutting tool 20 is additionally reduced. Therefore, even if the cross-sectional shape of the inner periphery of the guide bushing 30 or the outer periphery of the cutting tool 20 is not round due to manufacturing tolerance, the lateral vibration can be reduced by means of the oil film g.
The first modality described above provides the following advantages.
(1) The deep hole machining apparatus 1 includes the guide bushing 30 having the hole of
injection 1 for the injection of the oil towards the outer periphery of the cutting tool 20. Accordingly, because the oil film g is formed between the inner wall of the guide bushing 30 and the cutting tool 20, the tool cut 20 rotates out of contact with the inner wall of the guide bushing 30. Therefore, because heat generation and abrasion due to friction between the guide wall 30 and the cutting tool 20 can be suppressed, the The durability of the guide bushing 30 can be greatly increased.
(2) The supply channel 22 and the discharge channel 23 are radially located inwardly of the outer peripheral wall of the cutting tool 20. Therefore, the cutting tool 20 can be formed to have an outer cylindrical shape. Accordingly, it is possible to adjust the flow rate of the oil escaping from the gap between each restriction portion 32 of the guide bushing 30 and the cutting tool 20 to maintain the oil pressure inside the guide bushing 30. Therefore , the oil film g can be formed between the inner wall of the guide bushing 30 and the cutting tool 20.
(3) The guide bushing 30 includes the restricting portions 32 formed in the inner wall thereof at both axial ends thereof. By adjusting the
d separation between each restriction part 32 and the cutting tool 20, the oil pressure inside the guide bushing 30 can be maintained.
(4) The guide bushing 30 includes the slot portion 33 formed in its interior wall. Because the slot portion 33 stores the oil therein, the oil pressure inside the guide bushing 30 can be maintained constant. Accordingly, the oil film g can be formed between the interior wall of the guide bushing 30. and the cutting tool 20.
(5) In the deep-hole machining method described above, the pressure of the oil injected from the injection hole 31 of the guide bushing 30 is adjusted to a value, so that the oil film g can be formed between the inner wall of the guide bushing 30 and the cutting tool 20. Consequently, because the cutting tool 20 rotates out of contact with the inner wall of the guide bushing 30, the generation of heat and abrasion due to the friction between the guide wall 30 and the cutting tool 20 can be suppressed.
Second Modality
Next, a deep hole machining apparatus according to a second embodiment of the invention is described with reference to Figure 6. The deep hole machining apparatus according to the second
The embodiment includes a guide bushing 40, the radially inward part of which inner wall is formed of a porous part 41 made of porous material having a number of pores 41h as the injection holes. Figure 6 is an enlarged view of the inner wall of the guide bushing 40. In this embodiment, the compressed air supplied from an air supply device such as a compressor (not shown) is injected from the pores. of the porous part 41.
The guide bushing 40 prevents airflow from escaping between the inner wall of the guide bushing 40 and the outer periphery of the cutting tool 20 at both of its axial ends. By adjusting the flow velocity of the air injected from the pores of the porous part 41 and the velocity of air flow escaping between the inner wall of the guide bushing 40 and the outer periphery of the cutting tool 20, the air pressure stored between the guide bushing 40 and the cutting tool 20 is adjusted. Because an air layer is formed between the inner wall of the guide bushing 40 and the cutting tool 20, the cutting tool 20 rotates out of contact with the inner wall of the guide bushing 40.
In the second embodiment, the inner wall of the guide bushing 40 is formed of the porous part 41 which has a number of pores. Consequently, it is possible
injecting the air from the pores of the porous part 41 towards the entire outer periphery of the cutting tool 20 whereby, an air layer is formed between the inner wall of the guide socket 40 and the cutting tool 20. Therefore, because the generation of heat and abrasion due to friction between the guide bushing 40 and the cutting tool 20 can be suppressed, the durability of the guide bushing 40 can be increased.
Third Modality
Next, a deep-hole machining apparatus according to a third embodiment of the invention is described with reference to Figure 7. The deep-hole machining apparatus according to the third embodiment includes a guide bushing 50 whose inner wall it is formed of three circular arc-shaped surface parts 51, 52 and 53. The circular arc-shaped surface portions 51, 52 and 53 protrude radially outwardly. Accordingly, the distance between the inner wall of the guide bushing 50 and the cutting tool 20 becomes the smallest in the three uniformly spaced positions in a circle about the axial center of the cutting tool 20. Also, the distance between the inner wall of the guide bushing 50 and the cutting tool 20 becomes the largest in the three uniformly spaced positions in a circle around
of the axial center of the cutting tool 20. The reaction force of the oil in the position, the distance from which the inner wall of the guide bush 50 is the smallest, is larger than the reaction force of the oil in the positions, the distance of which the inner wall of the guide bushing 50 is the largest.
The guide bushing 50 is formed with the injection holes 54, 55 and 56 which open towards the positions, the distance of which to the inner wall of the guide bushing 50 is the greatest. The oil supplied from the oil pressure supply device 3 is injected from the injection holes 54, 55 and 56 at a predetermined pressure. Accordingly, the injection holes 54, 55 and 56 do not transmit the reaction force of the oil in the positions, of which the inner wall of the guide bushing 50 is the smallest. Because the injection holes 54, 55 and 56 are formed in all positions in which the distance between the inner wall of the guide bushing 50 and the cutting tool 20 is the largest, the variation of oil pressure within of the guide bushing 50 can be reduced.
In the third embodiment, the inner wall of the guide bushing 50 is formed of the three circular arc-shaped surface parts 51, 52 and 53, so that there are three positions, in each of which is large
the reaction force of the oil. Because the cutting tool 20 is suspended at three points by means of the oil film, the cutting tool 20 can be suppressed from lateral vibration. Although the inner wall of the guide bushing 50 is formed of the three circular arc-shaped surface portions 51, 52 and 53 in the third embodiment, it could be formed of a number no larger than three of the surface portions of Circular arc shape. Also in that case, the cutting tool 20 is suspended at multiple points by means of the oil film, and can be suppressed from the lateral vibration.
Fourth Modality
Next, a deep hole machining apparatus according to a fourth embodiment of the invention is described with reference to Figure 8.
Figure 8 is an amplification view of the inner wall of a guide bushing 60 included in the deep hole machining apparatus according to the fourth embodiment of the invention. In the fourth embodiment, the inner wall of the guide bushing 60 is formed with three injection holes 61, 62 and 63, a plurality of V-shaped slot portions 64 and the restriction portions 65. The oil supplied from the The oil pressure supply device 3 is injected from the injection holes 61, 62 and 63 at a predetermined pressure. Each part of
slot 64 can store therein the injected oil from injection holes 61, 62 and 63. The fourth embodiment provides the same advantages as those provided by the first to third modes.
Fifth Modality
Next, a deep hole machining apparatus according to a fifth embodiment of the invention is described with reference to Figures 9-11. Each of Figures 9, 12 and 14 is a partial cross-sectional view of the guide bushing 30. The deep-hole machining apparatus according to the fifth embodiment includes two discharge channels 24 and 25 radially located away from the center axial. The discharge channels 24 and 25 open towards the far end side of the cutting tool 20 and towards the side of the rotation device. Each of the discharge channels 24 and 25 includes a chip introduction hole 26 on the far end side of the cutting tool 20, and a chip discharge hole 27 on the side of the rotation device. As shown in Figures 9 and 10, the cutting tool 20 includes a cover part 28 that covers the radially outward part of the discharge holes 24 and 25. The cutting tool 20 is formed to have a cylindrical shape in a portion in which the cover part 28 is formed. The guide bush 30 is located radially
out from the deck part 28.
Here, it is assumed that the axial length of the cover portion 28 is Ll, the axial length of the guide sleeve 30 is L2, and the depth of a hole 4 that will be machined is L3 as shown in Figure 11. In this In this embodiment, the axial length Ll of the cover portion 28 is larger than the sum of the axial length L2 of the guide sleeve and the depth L3 of the hole 4 to be machined. That is, the ratio of L1 > (L2 + L3). Accordingly, it is possible to avoid the flow velocity of a gas or liquid escaping from the separation between each restriction portion 32 of the guide bushing 30 and the cover part 28. Therefore, it is possible to maintain the air pressure or oil stored between the guide bushing 30 and the cover part 28 to form an air layer or an oil film therein.
According to the fifth embodiment, it is possible to discharge the chips originating from the cut through the discharge channels 24 and 25, and it is possible to suppress heat generation and abrasion due to friction between the guide bushing 30 and the cutting tool 20.
Sixth Modality
Next, a deep-hole machining apparatus according to a sixth embodiment of the invention
is described with reference to Figures 12 and 13. In the sixth embodiment, the cutting tool 20 includes a discharge channel 29 at its axial center. The discharge channel includes the chip introduction hole 26 on the distal side of the cutting tool 20 and includes the chip discharge hole 27 on the side of the rotation device. As shown in Figure 13, the cutting tool 20 includes the cover part 28 which covers the radially outward part of the discharge channel 29. The cutting tool 20 is formed to have a cylindrical shape in a portion in which the cover part 28 is formed. The guide bushing 30 is located radially outwardly of the cover part 28. Consequently, air or oil is stored between the guide bushing 30 and the cover part 28, and a layer of air or an oil film are formed there.
Seventh Modality
Next, a deep hole machining apparatus according to a seventh embodiment of the invention is described with reference to Figures 14-17. In the seventh embodiment, the cutting tool 20 does not include any download channel. The guide bushing 30 is located closer to the side of the rotation device than is the slanted cutting distance portion 200 of the cutting tool 20. As shown in Figure 15, the tool
cut 20 is formed in a cylindrical shape in its part closest to the side of the rotating device that is where the distal cut portion 200 is located. Consequently, air or oil is stored between the guide bushing 30 and the periphery outside of the cutting tool 20, and an air layer or oil film are formed therein.
As shown in Figure 16, in the second embodiment, the cutting tool 20 can be used for finishing the inner wall of a through hole 5 formed in the workpiece 2. The burrs or chips that originate from the The end of the through hole 5 is discharged from a hole 6 located on the side opposite the through hole 5 through the cutting tool 20. As shown in Figure 17, the cutting tool 20 can be used in the same way for the finishing of a blind hole 7 formed in the work piece 2. The blind hole 7 is formed with a side hole 8. The burrs or chips that originate from the finish of the blind hole 7 are discharged from the side hole 8
Other Modalities
Although the deep-hole machining apparatus of each of the modalities described above is for the machining of a deep hole in a workpiece, these can be used for finishing the
inner surface of a hole formed in the work piece.
The preferred embodiments explained above are exemplary of the invention of the present application which is simply described by the following appended claims. It should be understood that modifications of the preferred embodiments could be made as would occur to a person skilled in the art.
It is noted that in relation to this date the best method known by the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.
Claims (10)
1. A deep hole machining apparatus, characterized in that it comprises: a cutting tool driven to rotate about an axis thereof for cutting a hole in a workpiece or for finishing a hole formed in a workpiece; a rotating device that drives the cutting tool to rotate; Y a guide bushing in which the cutting tool is inserted with a partition with an inner wall of the guide bushing, the guide bushing is formed with at least one injection hole for the injection of a gas or liquid towards the outer periphery of the cutting tool that is being driven by the rotating device.
2. The deep hole machining apparatus according to claim 1, characterized in that the guide bushing is formed with a restricting part at both axial ends thereof to prevent the escape of gas or liquid from between the separation.
3. The deep hole machining device of according to claim 1, characterized in that the guide bushing is formed with a groove part in the inner wall thereof for the storage of the liquid therein.
4. The deep hole machining apparatus according to claim 1, characterized in that the inner wall of the guide bushing is formed of a porous part having a plurality of pores with the ability to inject the gas towards the outer periphery of the tool. cut.
5. The deep-hole machining apparatus according to claim 1, characterized in that the inner wall of the guide bushing is formed of a number no larger than three of the circular arc-shaped surface portions each having a shaped surface. of circular arc extending in the axial direction.
6. The deep-hole machining apparatus according to claim 1, characterized in that the cutting tool is formed with a discharge channel extending in the axial direction for the discharge of chips originating from the cutting or finishing of the hole, and the guide bushing is positioned to orient a part of the cutting tool in which the discharge channel is located radially inwardly of the outer periphery of the cutting tool.
7. The deep hole machining apparatus according to claim 6, characterized in that the discharge channel is located at the axial center of the cutting tool.
8. The deep hole machining apparatus according to claim 6, characterized in that the cutting tool includes a covering part covering a radially outer part of the discharge channel, the axial length of the covering part being larger than the sum of the depth of the hole that will be cut in the work piece and the axial length of the guide bushing.
9. The method of machining a deep hole in a workpiece using the deep hole machining apparatus according to claim 1, characterized in that it comprises: a step of injecting the injection of a gas or a liquid from the injection hole of the guide bushing; Y a pressure adjusting step of adjusting the pressure of the gas or liquid to a value such that the inner wall of the guide bushing and the cutting tool are kept out of contact with each other.
10. The method of machining a deep hole in a workpiece according to claim 9, characterized in that the guide bushing is formed with a restriction part at both axial ends thereof to prevent the gas or liquid from escaping between the separation, and in the pressure adjustment stage, the pressure of the gas or liquid injected from the injection hole is reduced with the decrease of the distance between the restricting part and the outer periphery of the cutting tool, and is increased with distance.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013264747A JP6201730B2 (en) | 2013-12-23 | 2013-12-23 | Deep hole processing apparatus and deep hole processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX2014016026A true MX2014016026A (en) | 2015-07-29 |
| MX369622B MX369622B (en) | 2019-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2014016026A MX369622B (en) | 2013-12-23 | 2014-12-19 | Deep hole machining apparatus and deep hole machining method. |
Country Status (2)
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| JP (1) | JP6201730B2 (en) |
| MX (1) | MX369622B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6722153B2 (en) | 2017-07-28 | 2020-07-15 | 株式会社Ｓｕｂａｒｕ | Drill, drilling unit and drilling method |
| JP7207983B2 (en) | 2018-12-10 | 2023-01-18 | 株式会社Subaru | Drills, drilling units and methods of making workpieces |
| JP7267766B2 (en) | 2019-02-14 | 2023-05-02 | 株式会社Subaru | Rotary cutting tool, rotary cutting unit and method of making workpiece |
| JP2021186914A (en) | 2020-05-27 | 2021-12-13 | 株式会社Subaru | Hole-finish processing tool and manufacturing method for hole-finished product |
| EP4374994A1 (en) * | 2021-08-27 | 2024-05-29 | Yamazaki Mazak Corporation | Workpiece support device for machine tool, machine tool, and method for using machine tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS496264B1 (en) * | 1970-02-23 | 1974-02-13 | ||
| JPS53156982U (en) * | 1977-05-16 | 1978-12-09 | ||
| JPS5768714U (en) * | 1980-10-07 | 1982-04-24 | ||
| JPS6039410U (en) * | 1983-08-25 | 1985-03-19 | 三菱重工業株式会社 | deep hole cutting tool |
| JPH04141303A (en) * | 1990-10-01 | 1992-05-14 | Fusao Yamada | Fixed type guide bush and work feeding method by using it in main spindle travelling automatic lathe for machining bar |
-
2013
- 2013-12-23 JP JP2013264747A patent/JP6201730B2/en not_active Expired - Fee Related
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- 2014-12-19 MX MX2014016026A patent/MX369622B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015120216A (en) | 2015-07-02 |
| MX369622B (en) | 2019-11-14 |
| JP6201730B2 (en) | 2017-09-27 |
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