CN110091005B - Gear grinding device - Google Patents
Gear grinding device Download PDFInfo
- Publication number
- CN110091005B CN110091005B CN201811201591.3A CN201811201591A CN110091005B CN 110091005 B CN110091005 B CN 110091005B CN 201811201591 A CN201811201591 A CN 201811201591A CN 110091005 B CN110091005 B CN 110091005B
- Authority
- CN
- China
- Prior art keywords
- tailstock
- grinding wheel
- workpiece
- vertical direction
- support
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F19/00—Finishing gear teeth by other tools than those used for manufacturing gear teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
- B23F5/02—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding
Abstract
A gear grinding device is provided with: a workpiece table (3) that rotatably supports a workpiece (W) on the bed (2); a grinding wheel support (4) that drives a grinding wheel (T) that grinds a workpiece (W) to rotate and supports the grinding wheel (T) on the bed (2) so as to be movable relative to the workpiece table (3); a tailstock (6) capable of pressing a workpiece (W) supported by the workpiece table (3) from above in the vertical direction; a tailstock support unit (7) that supports the tailstock (6) on the bed (2) so as to be movable in the vertical direction; and a dressing device (5) which is supported by the tailstock support part (7) so as to be movable in the vertical direction and which can dress the grinding wheel (T). When the tailstock support (7) is viewed from the grinding wheel support (4) side, at least a part of the movement region of the tailstock (6) overlaps at least a part of the movement region of the dresser (5).
Description
Technical Field
The present invention relates to a gear grinding apparatus.
This application claims priority with respect to application No. 2018-015427 filed in the sun on 31/1/2018, the contents of which are incorporated herein by reference.
Background
The gear is required to have high machining accuracy depending on the purpose of use. A gear required to have high machining accuracy is manufactured by grinding a rough-machined workpiece with a grinding wheel.
As an apparatus for grinding a gear, patent document 1 describes a gear grinding machine. The gear grinding machine grinds a workpiece by relatively rotating a spiral grinding wheel and the workpiece in a meshed state. A column for movably supporting a rotating grinding wheel is provided on a bed of a gear grinding machine. A workpiece table that rotatably supports a workpiece is provided on the bed so as to face the grinding wheel. A reverse column is provided at a position facing the column via the work table. The reverse column is formed in a single column shape extending in the vertical direction from the bed in view of space saving of the entire apparatus.
The reversing column described in patent document 1 is provided with a conveying mechanism for conveying a workpiece to a workpiece table by rotating the workpiece around the reversing column. The reverse column is provided with a dresser for dressing the grinding wheel and a tailstock (center tool) for pressing the workpiece from above in the vertical direction.
[ Prior Art document ]
[ patent document ]
[ patent document 1 ] Japanese patent laid-open No. 2005-111600
[ problem to be solved by the invention ]
However, in the gear grinding machine as described above, a space for moving the tailstock and the dresser must be secured around the column. If a space is secured around the reverse column, the apparatus as a whole is enlarged.
Disclosure of Invention
The invention provides a gear grinding device which can ensure the space for moving a tailstock and a dressing device and realize miniaturization.
[ MEANS FOR solving PROBLEMS ] A method for solving the problems
A gear grinding device according to a first aspect of the present invention includes: a bed body; a workpiece table that rotatably supports a workpiece to be a gear on the bed; the grinding wheel is used for grinding the workpiece; a grinding wheel support portion that drives the grinding wheel to rotate about a grinding wheel rotation axis and supports the grinding wheel on the machine bed so as to be movable relative to the workpiece table; a tailstock capable of pressing the workpiece supported by the workpiece table from above in a vertical direction; a tailstock support unit that supports the tailstock on the bed so as to be movable in the vertical direction; and a dressing device supported by the tailstock support unit so as to be movable in a vertical direction, the dressing device being capable of dressing the grinding wheel, wherein at least a part of a movement region of the tailstock overlaps at least a part of a movement region of the dressing device when the tailstock support unit is viewed from the grinding wheel support unit side.
With this configuration, it is possible to reduce the space that must be secured around the tailstock support portion with respect to the direction intersecting the vertical direction in order to move the tailstock and the dresser. As a result, the area required for installing the tailstock and the dresser on the bed can be reduced.
In the gear grinding device according to the second aspect of the present invention, in addition to the first aspect, the dresser may intersect a virtual straight line that passes through a center of a tip of the tailstock and is orthogonal to the grinding wheel rotation axis when viewed from above in a vertical direction, and the grinding wheel may intersect the virtual straight line.
With such a configuration, the space that must be secured in the direction intersecting the same virtual line in order to move the tailstock and the dresser can be minimized around the tailstock support. This enables further downsizing of the entire gear grinding device.
In the gear grinding device according to the third aspect of the present invention, in addition to the first or second aspect, the dresser may be disposed at a position closer to the wheel support than the tailstock.
With such a configuration, it is not necessary to move the dresser so as to avoid the tailstock when dressing. Therefore, the moving time of the dresser and the grinding wheel can be reduced, and the cycle time during dressing can be shortened.
[ Effect of the invention ]
According to the present invention, it is possible to secure a space for moving the tailstock and the dresser and to reduce the size.
Drawings
Fig. 1 is a side view schematically showing a gear grinding device according to the present embodiment.
Fig. 2 is a plan view schematically showing the gear grinding device according to the present embodiment.
Fig. 3 is a perspective view showing the tailstock support unit according to the present embodiment.
Fig. 4 is a main-part cross-sectional view showing the tailstock moving unit located at the tailstock use position according to the present embodiment.
Fig. 5 is a main-part cross-sectional view showing the tailstock moving unit located at the tailstock standby position according to the present embodiment.
[ Mark Specification ]
1 Gear grinding device
T-shaped grinding wheel
W workpiece
Dv vertical direction
D1 first direction
D2 second direction
2 lathe bed
20 upper surface of the lathe bed
3 workpiece table
O3 table axis
4 grinding wheel support
41 grinding wheel support part body
42 grinding wheel moving part
43 grinding wheel drive part
5 dressing device
6 tailstock
7 tailstock supporting part
71 supporting leg
713 Top plate
72 support leg upper connection
73 lower connecting part of support leg
74 fixing plate part
75 first guide rail
76 second guide rail
77 upper reinforcing part
65 tailstock moving part
55 dressing device moving part
8 workpiece rotary conveying part
O5 workpiece rotary shaft
Use position of A tailstock
Standby position of B tailstock
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to fig. 1 to 5.
The gear grinding apparatus 1 is a grinding apparatus that grinds a workpiece W to be a gear by a grinding wheel T. In the gear grinding device 1, the grinding wheel T is brought into contact with the workpiece W while rotating synchronously, thereby grinding the workpiece W. The workpiece W is a workpiece formed in a disc shape or a cylindrical shape, for example. The workpiece W grinds the teeth formed on the outer peripheral surface by the grinding wheel T.
The grinding wheel T is formed in a cylindrical shape. A spiral grinding tooth corresponding to the tooth profile of a desired gear is formed on the outer peripheral surface of the grinding wheel T.
As shown in fig. 1 and 2, the gear grinding apparatus 1 includes a bed 2, a workpiece table 3, a grinding wheel support 4, a dresser 5, a tailstock 6, a tailstock support 7, a dresser moving unit 55, a tailstock moving unit 65, and a workpiece turning and conveying unit 8.
As shown in fig. 1, the bed 2 is a base provided on the ground. The bed 2 is provided with a workpiece table 3, a grinding wheel support 4, and a tailstock support 7.
The workpiece table 3 rotatably supports the workpiece W on the bed 2. The workpiece table 3 is attached to the bed 2 at a position where the workpiece W can be faced to the grinding wheel T. The workpiece table 3 is rotatable about a table axis O3 extending in the vertical direction Dv with respect to the bed 2.
The grinding wheel support 4 rotates the grinding wheel T that grinds the workpiece W. The grinding wheel support 4 supports the grinding wheel T on the bed 2 so as to be movable relative to the workpiece table 3. As shown in fig. 2, the grinding wheel support unit 4 includes a grinding wheel support unit main body 41, a grinding wheel moving unit 42, and a grinding wheel driving unit 43.
The grinding wheel support body 41 is disposed on the bed 2 so as to be separated from the workpiece table 3. The grinding wheel support body 41 allows the grinding wheel T to move in the horizontal direction with respect to the workpiece table 3. Here, the moving direction of the wheel supporting unit main body 41 with respect to the bed 2 is referred to as a first direction D1. The first direction D1 is one of horizontal directions, and is a longitudinal direction of the bed 2. Therefore, the grinding wheel support main body 41 adjusts the position of the grinding wheel T in the first direction D1 with respect to the workpiece table 3.
The grindstone moving portion 42 is movable in the vertical direction Dv with respect to the grindstone support portion main body 41. Therefore, the grinding wheel moving unit 42 adjusts the position of the grinding wheel T in the vertical direction Dv with respect to the workpiece table 3.
The grinding wheel driving unit 43 is movable relative to the grinding wheel moving unit 42 in a horizontal direction (referred to as a second direction D2) orthogonal to the first direction D1. The second direction D2 is a direction orthogonal to the first direction D1 and the vertical direction Dv, and is the width direction of the bed 2. A grinding wheel T is detachably attached to the grinding wheel driving unit 43. The grinding wheel driving unit 43 moves the grinding wheel T by power of a driving source such as a motor while rotating the grinding wheel T about a grinding wheel rotation axis O4 extending in a direction intersecting the first direction D1. Therefore, the grinding wheel driving unit 43 adjusts the position of the grinding wheel T in the second direction D2 with respect to the workpiece table 3 while rotating the grinding wheel T.
As shown in fig. 1 and 2, the truing device 5 is capable of truing the grinding wheel T. The dressing apparatus 5 has a dressing tool driven to rotate. The dresser 5 grinds the grinding wheel T by bringing a dresser into contact with the grinding wheel T. The dresser 5 is supported by the tailstock support unit 7 via a dresser moving unit 55 so as to be movable in the vertical direction Dv.
The tailstock support portion 7 supports the tailstock 6 and the dresser 5 so as to be movable in the vertical direction Dv. The tailstock support 7 is disposed at a position separated from the wheel support 4 in the first direction D1 with the workpiece table 3 interposed therebetween. As shown in fig. 3, the tailstock support portion 7 includes support legs 71, a top plate 713, support leg upper coupling portions 72, support leg lower coupling portions 73, a fixed plate portion 74, a first rail 75, a second rail 76, and an upper reinforcement portion 77.
The tailstock 6 can press the workpiece W supported by the workpiece table 3 from above in the vertical direction Dv.
The support leg 71 has a support leg main body portion 711 and a support leg reinforcing portion 712. The support leg body 711 has a rectangular flat plate shape. The support leg body 711 is disposed such that the widest surface thereof faces the second direction D2. The pair of support legs 71(71a, 71b) are fixed to the bed 2 via support leg lower connection portions 73. Each support leg 71 extends in the vertical direction Dv. The support legs 71 are arranged in the second direction D2 at substantially equal intervals from a plane including the table axis O3 and a workpiece swiveling axis O5, which will be described later.
The first guide rail 75 is fixed to the side of the support-leg upper coupling portion 72 facing the wheel support portion 4. The first guide rail 75 linearly extends in the vertical direction Dv. The first guide rail 75 is composed of two members, and is disposed apart from the table axis O3 in the second direction D2 so as to be equally spaced from a plane including a workpiece swiveling axis O5 described later.
The second guide rail 76 is fixed to the side of the support-leg upper coupling portion 72 facing the wheel supporting portion 4. The second guide rail 76 linearly extends in the vertical direction Dv. The second guide rails 76 are formed of two, and the second guide rails 76 are disposed apart from each other in the second direction D2 so as to be equally spaced from a plane including the table axis O3 and a workpiece swiveling axis O5, which will be described later. The pair of second guide rails 76 are disposed so as to sandwich the pair of first guide rails 75 inward in the second direction D2.
The tailstock moving unit 65 is attached to the support leg upper connection unit 72 via a first rail 75 so as to be movable in the vertical direction Dv. The tailstock moving unit 65 moves the tailstock 6 between a tailstock use position a and a tailstock standby position B. As shown in fig. 4, the tailstock use position a is a position at which the tailstock 6 supports the workpiece W mounted on the workpiece table 3. At the tailstock use position a, the tailstock 6 presses the workpiece W. As shown in fig. 5, the tailstock standby position B is a position which is vertically above the tailstock use position a and which is not in contact with the workpiece W.
The tailstock 6 is fixed to the tailstock moving unit 65. The tailstock moving unit 65 is moved relative to the first rail 75 by a driving device such as a motor, not shown.
The dresser moving portion 55 supports the dresser 5 movably in the first direction D1. The dresser moving portion 55 is supported by the support-leg upper connecting portion 72 via the second guide rail 76 so as to be movable in the vertical direction Dv. The finisher moving unit 55 linearly moves the finisher 5 between a finisher use position not shown and a finisher standby position not shown. The dressing apparatus use position is a position where the grinding wheel T can be dressed. That is, the dressing apparatus use position is a position where the dressing tool contacts the grinding wheel T. The dresser standby position is a position which is vertically above the dresser use position Dv and which is not in contact with the grinding wheel T.
The dresser moving unit 55 is configured not to interfere with the tailstock moving unit 65 when viewed from above in the vertical direction Dv. Therefore, the dresser moving unit 55 and the tailstock moving unit 65 do not interfere with each other when moving in the vertical direction Dv. The dresser moving unit 55 is moved relative to the second guide rail 76 by a driving device such as a motor, not shown.
The dresser 5 is disposed closer to the wheel support 4 than the tailstock 6 when viewed from above in the vertical direction Dv.
The moving region of the tailstock 6 is a region connecting the tailstock-use position a and the tailstock-standby position B. The moving region of the tailstock 6 extends linearly in the vertical direction Dv in parallel with the first rail 75.
The movement region of the finisher 5 is a region connecting the finisher use position and the finisher standby position. The movement region of the finisher 5 linearly extends in the vertical direction Dv in parallel with the second guide rail 76. The movement region of the tailstock 6 and the movement region of the dressing device 5 are formed in such a manner that the position of the tailstock 6 in the second direction D2 overlaps with a part of the position of the dressing device 5 in the second direction D2.
In the gear grinding device 1 as described above, the tailstock 6 and the dresser 5 are supported by the support-leg upper connecting portion 72 so as to be movable in the vertical direction Dv at positions where the movement regions overlap without interfering with each other. Therefore, the space that must be secured around the support leg upper connection portion 72 in the first direction D1 or the second direction D2 to move the tailstock 6 and the dresser 5 can be reduced. As a result, the entire gear grinding apparatus 1 can be reduced in size as compared with a case where the tailstock 6 or the dresser 5 is moved so as to rotate around the tailstock support 7.
The tailstock moving unit 65 moves the tailstock 6 only in the vertical direction Dv. Therefore, the movement region of the tailstock 6 extends linearly with respect to the vertical direction Dv in parallel with the first rail 75. Similarly, the dresser moving unit 55 moves the dresser 5 only in the vertical direction Dv. Therefore, the movement region of the finisher device 5 extends linearly with respect to the vertical direction Dv in parallel with the second guide rail 76. Therefore, the length of the movement region of the tailstock 6 and the length of the movement region of the dresser 5 can be further reduced as compared with the case where the movement regions are curved or inclined. As a result, the moving time of the tailstock 6 or the dresser 5 can be shortened. Therefore, the cycle time can be shortened.
Further, the tailstock 6 and the dresser 5 are arranged on the same virtual straight line VL so as to overlap with each other in a position in the second direction D2 so as to coincide with the grinding wheel T when viewed from above in the vertical direction Dv. Specifically, the same virtual straight line VL is a straight line passing through the center of the center, not shown, of the tailstock 6 and orthogonal to the grinding wheel rotation axis O4 when viewed from above in the vertical direction Dv. The same virtual straight line VL intersects the dresser 5 and a part of the grinding wheel T when viewed from above in the vertical direction Dv. Therefore, the space that must be secured in the second direction D2 to move the tailstock 6 and the dresser 5 around the support-leg upper coupling portion 72 can be minimized. This enables further downsizing of the entire gear grinding device 1.
The dresser 5 is disposed closer to the wheel support 4 than the tailstock 6 when viewed from above in the vertical direction Dv. The dresser 5 needs to be closer to the grinding wheel T than the tailstock 6 when dressing the grinding wheel T. In the present embodiment, the truing device 5 is disposed at a position closer to the grinding wheel T than the tailstock 6, and thus, it is not necessary to move the truing device 5 so as to avoid the tailstock 6 at the time of truing. Therefore, the amount of movement of the dresser 5 or the grinding wheel T can be reduced, and the cycle time during dressing can be shortened.
(other modification of the embodiment)
Although the embodiments of the present invention have been described above with reference to the drawings, the configurations and combinations thereof in the embodiments are examples, and additions, omissions, substitutions, and other modifications of the configurations can be made without departing from the scope of the present invention.
The tailstock support portion 7 is not limited to the structure having the support leg 71 of the present embodiment. The tailstock support 7 may be configured to move the tailstock 6 and the dresser 5 in the vertical direction Dv.
The tailstock moving unit 65 and the dresser moving unit 55 are not limited to those linearly moving only in the vertical direction. The tailstock moving unit 65 and the dresser moving unit 55 may be movable in a direction including a component in the vertical direction. Therefore, the tailstock moving unit 65 and the dresser moving unit 55 may be movable in a direction inclined with respect to the vertical direction when the tailstock support unit 7 is viewed from the grinding wheel support unit 4 side, or may be movable along a curved movement path.
The tailstock moving unit 65 and the dresser moving unit 55 are not limited to being attached to the support leg upper connecting unit 72. The tailstock moving unit 65 and the dresser moving unit 55 may be attached to other portions of the tailstock support unit 7 such as the support leg 71.
The workpiece W is not limited to the case of being conveyed by the workpiece turning and conveying part 8 so as to turn around the workpiece turning axis as in the present embodiment. The workpiece W may be moved between the workpiece machining position and the workpiece replacement position. Therefore, the workpiece W can also be moved so as to swing around the tailstock support 7. Further, the workpiece W may also be linearly moved in the first direction D1 between the support legs 71.
When the tailstock support unit 7 is viewed from the grinding wheel support unit 4 side, at least a part of the movement region of the tailstock 6 may overlap at least a part of the movement region of the dresser 5. Therefore, when the tailstock support 7 is viewed from the wheel support 4 side, the movement region of the tailstock 6 and the movement region of the dresser 5 may be formed so that the position of the tailstock 6 in the second direction D2 overlaps with a partial region of the position of the dresser 5 in the second direction D2, or may be formed so that the entire regions overlap.
[ INDUSTRIAL APPLICABILITY ]
According to the present invention, it is possible to secure a space for moving the tailstock and the dresser and to reduce the size.
Claims (3)
1. A gear grinding device is provided with:
a bed body;
a workpiece table that rotatably supports a workpiece to be a gear on the bed;
the grinding wheel is used for grinding the workpiece;
a grinding wheel support portion that drives the grinding wheel to rotate about a grinding wheel rotation axis and supports the grinding wheel on the machine bed so as to be movable relative to the workpiece table;
a tailstock capable of pressing the workpiece supported by the workpiece table from above in a vertical direction;
a tailstock support unit that supports the tailstock on the bed body via a first rail extending in a vertical direction so as to be linearly movable in a direction including a component in the vertical direction; and
a dressing device supported by the tailstock supporting unit via a second rail extending in the vertical direction so as to be linearly movable in a direction including the component in the vertical direction, the dressing device being capable of dressing the grinding wheel,
at least a part of a movement region of the tailstock overlaps at least a part of a movement region of the dresser when the tailstock support is viewed from the grinding wheel support portion side,
and the dressing device and the tailstock can move in the vertical direction without interfering with each other.
2. The gear grinding apparatus according to claim 1,
the dressing device intersects with a same imaginary straight line that passes through a center of a tip of the tailstock and is orthogonal to the grinding wheel rotation axis when viewed from above in a vertical direction,
the grinding wheel can intersect the same imaginary straight line.
3. The gear grinding apparatus according to claim 1 or 2,
the dresser is disposed closer to the wheel support than the tailstock.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-015427 | 2018-01-31 | ||
| JP2018015427A JP6653339B2 (en) | 2018-01-31 | 2018-01-31 | Gear grinding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110091005A CN110091005A (en) | 2019-08-06 |
| CN110091005B true CN110091005B (en) | 2020-12-22 |
Family
ID=67443596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811201591.3A Active CN110091005B (en) | 2018-01-31 | 2018-10-16 | Gear grinding device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6653339B2 (en) |
| CN (1) | CN110091005B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115464496B (en) * | 2022-10-10 | 2023-11-21 | 宿州市祁南工贸有限责任公司 | Gear burr cleaning device |
| CN116372281A (en) * | 2023-03-23 | 2023-07-04 | 湖南中大创远数控装备有限公司 | Single-process numerical control worm grinding wheel gear grinding machine |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4220944B2 (en) * | 2004-07-15 | 2009-02-04 | 三菱重工業株式会社 | Gear grinding machine |
| US8882569B2 (en) * | 2009-09-29 | 2014-11-11 | Mitsubishi Heavy Industries, Ltd. | Gear grinding machine |
| DE102011015447A1 (en) * | 2011-03-29 | 2012-10-25 | Liebherr-Verzahntechnik Gmbh | gear cutting |
| JP6059947B2 (en) * | 2012-10-24 | 2017-01-11 | Dmg森精機株式会社 | Combined processing machine and processing method |
| JP5536250B1 (en) * | 2013-03-22 | 2014-07-02 | 三菱重工業株式会社 | Gear processing equipment |
| DE102013011048A1 (en) * | 2013-07-02 | 2015-01-08 | Liebherr-Verzahntechnik Gmbh | Doppelabrichter |
| JP5626429B1 (en) * | 2013-08-23 | 2014-11-19 | アイシン・エィ・ダブリュ株式会社 | Rotating machine and processing method thereof |
| DE102013015234A1 (en) * | 2013-09-13 | 2015-03-19 | Liebherr-Verzahntechnik Gmbh | Method for controlling a gear cutting machine and gear cutting machine |
| CN104889863B (en) * | 2015-05-13 | 2017-06-16 | 秦川机床工具集团股份公司 | Large-scale high-precision gear composite grinding center |
-
2018
- 2018-01-31 JP JP2018015427A patent/JP6653339B2/en active Active
- 2018-10-16 CN CN201811201591.3A patent/CN110091005B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019130620A (en) | 2019-08-08 |
| CN110091005A (en) | 2019-08-06 |
| JP6653339B2 (en) | 2020-02-26 |
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