CN203636124U - Gear hobbing machine hydraulic fixture - Google Patents

Gear hobbing machine hydraulic fixture Download PDF

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Publication number
CN203636124U
CN203636124U CN201320786498.XU CN201320786498U CN203636124U CN 203636124 U CN203636124 U CN 203636124U CN 201320786498 U CN201320786498 U CN 201320786498U CN 203636124 U CN203636124 U CN 203636124U
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CN
China
Prior art keywords
cylinder
hydraulic
piston
hydraulic oil
oil
Prior art date
Application number
CN201320786498.XU
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Chinese (zh)
Inventor
梁振东
高云
文芳芳
Original Assignee
奇瑞汽车股份有限公司
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Priority to CN201320786498.XU priority Critical patent/CN203636124U/en
Application granted granted Critical
Publication of CN203636124U publication Critical patent/CN203636124U/en

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Abstract

The utility model provides a gear hobbing machine hydraulic fixture comprising a cylinder base, a piston, a piston rod, a fixture body, a pulling rod, an expansion sleeve, an upper cover, a dropping hydraulic oil pipe and a rising hydraulic oil pipe. A hydraulic cylinder is formed on the upper portion of the cylinder base, the piston is arranged in the hydraulic cylinder and is connected to one end of the piston rod, the other end of the piston rod is connected to the pulling rod, the upper cover sleeves the cylinder base, the fixture body sleeves the upper cover, and the expansion sleeve sleeves the fixture body; the upper cover, the fixture body and the expansion sleeve are provided with coaxial through holes, the piston rod is raised into the through hole of the upper cover, the pulling rod is raised into the through holes of the fixture body and expansion sleeve, and the top of the pulling rod is provided with an expansion face matching with the inner wall of the through hole of the expansion sleeve; the dropping hydraulic oil pipe is communicated with the hydraulic cylinder above the piston, and the rising hydraulic oil pipe is communicated with the hydraulic cylinder below the piston. According to the gear hobbing machine hydraulic fixture, a workpiece machined through a gear hobbing machine can be clamped through the hydraulic power, and workpiece assembly and disassembly efficiency is improved.

Description

A kind of hydraulic jig for gear hobbing machine

Technical field

The utility model relates to mechanical manufacturing field, relates to more specifically a kind of hydraulic jig for gear hobbing machine in machine-building.

Background technology

Gear-hobbing machine is the gear cutting machine of processing straight-tooth, helical teeth and double helical tooth roller gear and worm gear etc. with hobboing cutter by generating, belong to most widely used a kind of gear cutting machine, machinable straight-tooth, helical gears on gear-hobbing machine, also can machining worm wheel, sprocket wheel etc., this lathe uses special hobboing cutter also can process the workpiece of the various special tooth profiles such as spline.Using gear-hobbing machine to add man-hour requirement to workpiece is fixedly clamped workpiece, in prior art in Gear Processing process, the clamping of workpiece is all adopted screw thread hand-operated clamping and unclamped with unclamping, Workpiece clamping is wasted time and energy, and firm workpiece clamping degree is lower, easily in process, there is the danger getting loose, thereby affected the working (machining) efficiency of gear-hobbing machine.

Summary of the invention

The utility model is based on above-mentioned prior art problem, a kind of hydraulic jig for gear hobbing machine of proposition of innovation, utilize hydraulic power to realize being fixedly clamped to gear-hobbing machine processing work, using the base of fixture simultaneously as hydraulic jack, structure simple to manufacture, reliable in function clamps gear-hobbing machine processing work, effectively reduce Workpiece clamping labour intensity, improved work-handling efficiency.

It is as follows that the utility model solves the problems of the technologies described above taked technical scheme:

A kind of hydraulic jig for gear hobbing machine, comprise: cylinder pedestal 1, piston 5, piston rod 6, clamp body 7, pull bar 8, ringfeder 11, upper cover 12, decline hydraulic oil pipe 14 and rising hydraulic oil pipe 15, the top of described cylinder pedestal 1 is formed with cylinder body of hydraulic oil cylinder, described piston 5 is arranged in described cylinder body of hydraulic oil cylinder, and be connected in one end of described piston rod 6, the other end of described piston rod 6 is connected in described pull bar 8, described upper cover 12 is sheathed on described cylinder pedestal 1, described clamp body 7 is sheathed on described upper cover 12, described ringfeder 11 is sheathed on described clamp body 7, described upper cover 12, clamp body 7 and ringfeder 11 have coaxial through-hole, described piston rod 6 rises up in the through hole of described upper cover 12, described pull bar 8 rises up in the through hole of described clamp body 7 and ringfeder 11, the top of described pull bar 8 has the tensioner working face matching with the through-hole wall of described ringfeder 11, described decline hydraulic oil pipe 14 is communicated in the cylinder body of hydraulic oil cylinder of described piston 5 tops, described rising hydraulic oil pipe 15 is communicated in the cylinder body of hydraulic oil cylinder of described piston 5 belows.

Further according to hydraulic jig for gear hobbing machine described in the utility model, the outer wall of wherein said piston 5 is close to the inwall of described cylinder body of hydraulic oil cylinder, and the outer wall of described piston 5 is along being circumferentially formed with oil seal groove, the outer wall of described piston rod 6 is close to the through-hole wall of described upper cover 12, and the outer wall of described piston rod 6, along being circumferentially formed with oil seal groove, is provided with oil seal washer in described oil seal groove.

Further according to hydraulic jig for gear hobbing machine described in the utility model, the bottom of wherein said upper cover 12 is formed with boss, described boss inlay card is in the opening of described cylinder body of hydraulic oil cylinder, and the bottom of described clamp body 7 is formed with boss, and described boss inlay card is in the via openings of described upper cover 12.

Further according to hydraulic jig for gear hobbing machine described in the utility model, wherein said ringfeder 11 comprises tensioner part and socket boss, described socket boss inlay card is in the via openings of described clamp body 7, the outside wall surface of described tensioner part is the face of cylinder, internal face is formed with inverted round table face along through hole direction, and the top of described pull bar 8 is formed with the inverted round table face matching with the internal face of tensioner part.

Further according to hydraulic jig for gear hobbing machine described in the utility model, wherein also include overcoat 4, described overcoat 4 is sheathed on the outer wall of described cylinder pedestal 1, and described cylinder pedestal 1 is close to the wall of overcoat 4 along being circumferentially provided with oil seal groove and point oil groove, in described oil seal groove, oil seal washer is installed, the turnover oilhole on described point of oil groove and cylinder body of hydraulic oil cylinder aligns.

Further, according to hydraulic jig for gear hobbing machine described in the utility model, wherein also include fixed block 2 and support plate 3, described fixed block 2 is fixed on the outer wall of described overcoat 4, and one end of described support plate 3 is connected in described fixed block 2.

Further according to hydraulic jig for gear hobbing machine described in the utility model, comprising having upper top 10 and guard shield 9, on the end face of described pull bar 8, be provided with pit, described top 10 bottom snaps in described pit, and described top 10 periphery arranges described guard shield 9.

Further according to hydraulic jig for gear hobbing machine described in the utility model, on the sidewall of wherein said cylinder pedestal 1 and overcoat 4, offer two groups of oil pipe pipelines, described decline hydraulic oil pipe 14 is through the cylinder body of hydraulic oil cylinder part between piston 5 and upper cover 12 described in one group of oil pipe pipeline connection, described rising hydraulic oil pipe 15 is through the cylinder body of hydraulic oil cylinder part of piston 5 belows described in another group oil pipe pipeline connection, and is provided with oil stifled 17 at the oil-out of described another group oil pipe pipeline.

Further, according to hydraulic jig for gear hobbing machine described in the utility model, wherein said decline hydraulic oil pipe 14 is connected with the oil circuit control of upper top decline, and described rising hydraulic oil pipe 15 is connected with the oil circuit control of upper top rising.

Further, according to hydraulic jig for gear hobbing machine described in the utility model, the inwall of wherein said cylinder body of hydraulic oil cylinder and the inwall of described through hole are cylindrical inner wall, and described piston 5, piston rod 6 and pull bar 8 have column structure.

At least can reach following technique effect by the technical solution of the utility model:

1), fixture described in the utility model utilizes hydraulic power to realize Workpiece clamping and fixes, and greatly improved workpiece fix tightly soundness, the danger that gets loose of having avoided workpiece process to occur;

2), while utilizing fixture described in the utility model to carry out Workpiece clamping, easy to operate, reduced labour intensity, improved work-handling efficiency;

3), fixture described in the utility model is using base simultaneously as hydraulic jack, simple in structure, easily realizes, replicability is strong, market prospects are wide.

Brief description of the drawings

The structural representation that accompanying drawing 1 is hydraulic jig for gear hobbing machine described in the utility model.

In figure, the implication of each Reference numeral is as follows:

1-cylinder pedestal, 2-fixed block, 3-support plate, 4-overcoat, 5-piston, 6-piston rod, 7-clamp body, 8-pull bar, 9-guard shield, 10-is upper top, 11-ringfeder, 12-upper cover, 13-oil seal groove, 14-decline hydraulic oil pipe, 15-rising hydraulic oil pipe, 16-nut, 17-oil is stifled.

Detailed description of the invention

Below in conjunction with accompanying drawing, the technical solution of the utility model is described in detail, so that those skilled in the art can more clearly understand scheme of the present utility model, but does not therefore limit protection domain of the present utility model.

As shown in Figure 1, hydraulic jig for gear hobbing machine described in the utility model comprises cylinder pedestal 1, fixed block 2, support plate 3, overcoat 4, piston 5, piston rod 6, clamp body 7, pull bar 8, guard shield 9, upper top 10, ringfeder 11, upper cover 12, decline hydraulic oil pipe 14, rising hydraulic oil pipe 15, nut 16 and oil stifled 17.The bottom surface of described cylinder pedestal 1 is as support works plane, be positioned on gear hobbing machine worktable, the top of cylinder pedestal 1 has cylinder-like structure, the inside of cylinder is as cylinder body of hydraulic oil cylinder, be arranged with described overcoat 4 at the cylinder outer wall of described cylinder pedestal 1, described overcoat 4 has circular, and circle ring inner wall is close to the cylinder outer wall of cylinder pedestal 1, and the cylinder outer wall that described cylinder pedestal 1 coordinates with overcoat 4 is along being circumferentially provided with three groups of oil seal grooves, in described oil seal groove, oil seal washer is installed, on cylinder pedestal outer wall in the middle of three groups of oil seal grooves, be designed with 2 annular grooves simultaneously, described annular groove is enterprising with cylinder block respectively, fuel-displaced oilhole aligns, thereby realize a point functional oil, when described overcoat 4 is sheathed on cylinder pedestal 1, both end faces are concordant.Described fixed block 2 use bolts are fixed on the outer wall of described overcoat 4, one end of described support plate 3 is connected with fixed block 2 use bolts, the other end of support plate 3 is fixed on the rear column of gear-hobbing machine at work, and effect is to make overcoat 4 not with gear hobbing machine worktable rotation, thereby avoids hydraulic oil pipe to be wound around.Described piston 5 is arranged in the cylinder body of hydraulic oil cylinder on described cylinder pedestal 1 top, described piston 5 has cylindrical-shaped structure and its outer wall is close to cylinder block inwall, and at piston outer wall along being circumferentially formed with 2 groups of oil seal grooves, for realizing piston oil sealing when elevating movement in cylinder block.The middle part of described piston 5 is fixedly connected on described piston rod 6 by nut 16.On described cylinder pedestal 1, be arranged with described upper cover 12, described upper cover 12 entirety have cylinder-like structure, the external diameter of cylinder approximates cylinder block internal diameter, the internal diameter of cylinder approximates the external diameter of piston rod, and the cylinder periphery of upper cover 12 is formed with flange, the low end face that connects described cylinder pedestal 1 of the peripheral outer lips of upper cover 12 described in when installation, it is that upper cover 12 peripheries are formed with inlay card in the boss structure of cylinder body opening that the cylinder outer wall part of while upper cover 12 rises up in cylinder block, described piston rod 6 rises up into the cylinder interior of described upper cover 12, and the cylinder inner wall of piston rod 6 outer walls and upper cover is close to, and be circumferentially formed with oil seal groove 13 on piston rod 6 outer walls edges, oil sealing when the cylinder inner wall lifting moving of piston rod along upper cover is provided, described upper cover 12 is also for the lifting moving of piston rod 6 provides guide channel.The other end of described piston rod 6 is fixedly connected on described pull bar 8.Described clamp body 7 is further sheathed on described upper cover 12, the middle part of described clamp body 7 offers cylindrical hole vertically, and be circumferentially formed with flange on outer wall edge, one end of described clamp body 7 rises up in the cylinder of described upper cover 12, the low end face (being that clamp body 7 peripheries are formed with inlay card in the boss structure of upper cover 12) that is connected to described upper cover of its flange, described pull bar 8 rises up in the cylindrical hole of described clamp body 7, moves up and down along described through hole.Described ringfeder 11 is sheathed on described clamp body 7, described ringfeder comprise tensioner part, flange and socket part (boss), and the middle part of described ringfeder 11 has through hole vertically, described socket part rises up in the cylindrical hole of described clamp body 7, described flange is arranged in the end face of described clamp body 7, and described pull bar 8 is through the through hole of described ringfeder, and described tensioner part is positioned at flange top, and its outside wall surface is the face of cylinder, and internal face is formed with inverted round table face along through hole direction.Described pull bar entirety has cylindrical outer surface and forms inverted round table outer surface on its top, in operation, workpiece to be clamped is sheathed on the outer wall face of cylinder of the tensioner part of ringfeder 11, the inverted round table face at described pull bar 8 tops mates with the inverted round table face of tensioner part internal face, thus the elastic telescopic by tensioner part under the effect of pull bar and by Workpiece clamping.Further on the end face of described pull bar 8, be provided with pit, on described pit, place described top 10, the sheathed described guard shield 9 of top 10 periphery described, prevents radially wobbling of pull bar in process by upper top 10 pits that embed described pull bar end face.On the sidewall of described cylinder pedestal 1 and overcoat 4, also offer oil pipe pipeline, decline hydraulic oil pipe 14 passes into the cylinder block part between piston 5 and upper cover 12 through this pipeline, rising hydraulic oil pipe 15 passes into the cylinder block part of piston 5 belows through this pipeline, and is provided with oil stifled 17 in the pipeline termination of rising hydraulic oil pipe.Above-mentioned cylinder pedestal 1, fixed block 2, support plate 3, overcoat 4, piston 5, piston rod 6, upper cover 12, decline hydraulic oil pipe 14, rising hydraulic oil pipe 15, nut 16 and the common hydraulic jack unit that form whole hydraulic jig for gear hobbing machine of oil stifled 17, above-mentioned clamp body 7, pull bar 8, guard shield 9, upper top 10, the common fixture unit that forms whole hydraulic jig for gear hobbing machine of ringfeder 11.

The specific operation process that uses hydraulic jig for gear hobbing machine described in the utility model to carry out Workpiece clamping is: first hydraulic jig for gear hobbing machine is placed on gear hobbing machine worktable, the other end of support plate 3 is fixed on the rear column of gear-hobbing machine.Then top decline oil circuit on decline hydraulic oil pipe 14 and lathe is joined (manually go up top lathe can enter oil circuit with workbench join), top rising oil circuit on rising hydraulic oil pipe 15 and lathe is joined (manually go up top lathe can exit oil circuit with workbench join).Add the tensioner part that be sleeved on workpiece (dotted portion in figure) ringfeder 11 man-hour, then install top and guard shield, start hydraulic pressure unit, when top decline (or workbench enters) on hydraulic pressure, decline hydraulic oil pipe 14 oil supply, piston 5 moves down, drive pull bar 8 to move down, the inverted round table face on pull bar top is adjacent to the inverted round table face on tensioner part inwall, and pull bar continues to move down the tensioner part of ringfeder is outwards out of shape, thereby the internal face of tensioner workpiece, has realized the clamping to workpiece; In the time machining, by rising hydraulic oil pipe 15 oil supply, on piston 5, on the moving pull bar 8 of shipper pole, move, and make pull bar top depart from the inwall of tensioner part, thereby realized the loosening of workpiece, just complete a fabrication cycles after taking off workpiece.

Scheme described in the utility model becomes to include the structure of cylinder body of hydraulic oil cylinder the base designs of gear-hobbing machine fixture, and reasonably use top clamping on rear column, the oil circuit that loosens realizes piston in in-oil cylinder movement, thereby utilize pull bar to realize the clamping to workpiece, the function of loosening to the effect of ringfeder, greatly improved the fix tightly soundness of work-handling efficiency and workpiece.

Below be only that preferred embodiment of the present utility model is described; the technical solution of the utility model is not limited to this; the any known distortion that those skilled in the art do on the basis of major technique design of the present utility model all belongs to the claimed technology category of the utility model, and the concrete protection domain of the utility model is as the criterion with the record of claims.

Claims (10)

1. a hydraulic jig for gear hobbing machine, it is characterized in that, comprise: cylinder pedestal (1), piston (5), piston rod (6), clamp body (7), pull bar (8), ringfeder (11), upper cover (12), decline hydraulic oil pipe (14) and rising hydraulic oil pipe (15), the top of described cylinder pedestal (1) is formed with cylinder body of hydraulic oil cylinder, described piston (5) is arranged in described cylinder body of hydraulic oil cylinder, and be connected in one end of described piston rod (6), the other end of described piston rod (6) is connected in described pull bar (8), described upper cover (12) is sheathed on described cylinder pedestal (1), described clamp body (7) is sheathed on described upper cover (12), described ringfeder (11) is sheathed on described clamp body (7), described upper cover (12), clamp body (7) and ringfeder (11) have coaxial through-hole, described piston rod (6) rises up in the through hole of described upper cover (12), described pull bar (8) rises up in the through hole of described clamp body (7) and ringfeder (11), the top of described pull bar (8) has the tensioner working face matching with the through-hole wall of described ringfeder (11), described decline hydraulic oil pipe (14) is communicated in the cylinder body of hydraulic oil cylinder of described piston (5) top, described rising hydraulic oil pipe (15) is communicated in the cylinder body of hydraulic oil cylinder of described piston (5) below.
2. hydraulic jig for gear hobbing machine according to claim 1, it is characterized in that, the outer wall of described piston (5) is close to the inwall of described cylinder body of hydraulic oil cylinder, and the outer wall of described piston (5) is along being circumferentially formed with oil seal groove, the outer wall of described piston rod (6) is close to the through-hole wall of described upper cover (12), and the outer wall of described piston rod (6), along being circumferentially formed with oil seal groove, is provided with oil seal washer in described oil seal groove.
3. hydraulic jig for gear hobbing machine according to claim 1, it is characterized in that, the bottom of described upper cover (12) is formed with boss, described boss inlay card is in the opening of described cylinder body of hydraulic oil cylinder, the bottom of described clamp body (7) is formed with boss, and described boss inlay card is in the via openings of described upper cover (12).
4. hydraulic jig for gear hobbing machine according to claim 1, it is characterized in that, described ringfeder (11) comprises tensioner part and socket boss, described socket boss inlay card is in the via openings of described clamp body (7), the outside wall surface of described tensioner part is the face of cylinder, internal face is formed with inverted round table face along through hole direction, and the top of described pull bar (8) is formed with the inverted round table face matching with the internal face of tensioner part.
5. according to the hydraulic jig for gear hobbing machine described in claim 1-4 any one, it is characterized in that, also include overcoat (4), described overcoat (4) is sheathed on the outer wall of described cylinder pedestal (1), and described cylinder pedestal (1) is close to the wall of overcoat (4) along being circumferentially provided with oil seal groove and point oil groove, in described oil seal groove, oil seal washer is installed, the turnover oilhole on described point of oil groove and cylinder body of hydraulic oil cylinder aligns.
6. hydraulic jig for gear hobbing machine according to claim 5, it is characterized in that, also include fixed block (2) and support plate (3), described fixed block (2) is fixed on the outer wall of described overcoat (4), and one end of described support plate (3) is connected in described fixed block (2).
7. hydraulic jig for gear hobbing machine according to claim 5, it is characterized in that, on the sidewall of described cylinder pedestal (1) and overcoat (4), offer two groups of oil pipe pipelines, the cylinder body of hydraulic oil cylinder part of described decline hydraulic oil pipe (14) between piston (5) described in one group of oil pipe pipeline connection and upper cover (12), the cylinder body of hydraulic oil cylinder part of described rising hydraulic oil pipe (15) below piston (5) described in another group oil pipe pipeline connection, and be provided with oil stifled (17) at the oil-out of described another group oil pipe pipeline.
8. according to the hydraulic jig for gear hobbing machine described in claim 1-4 any one, it is characterized in that, also include top (10) and guard shield (9), on the end face of described pull bar (8), be provided with pit, the bottom of described top (10) snaps in described pit, and the periphery of described top (10) arranges described guard shield (9).
9. hydraulic jig for gear hobbing machine according to claim 8, is characterized in that, described decline hydraulic oil pipe (14) is connected with the oil circuit control of upper top decline, and described rising hydraulic oil pipe (15) is connected with the oil circuit control of upper top rising.
10. according to the hydraulic jig for gear hobbing machine described in claim 1-4 any one, it is characterized in that, the inwall of described cylinder body of hydraulic oil cylinder and the inwall of described through hole are cylindrical inner wall, and described piston (5), piston rod (6) and pull bar (8) have column structure.
CN201320786498.XU 2013-12-04 2013-12-04 Gear hobbing machine hydraulic fixture CN203636124U (en)

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Application Number Priority Date Filing Date Title
CN201320786498.XU CN203636124U (en) 2013-12-04 2013-12-04 Gear hobbing machine hydraulic fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320786498.XU CN203636124U (en) 2013-12-04 2013-12-04 Gear hobbing machine hydraulic fixture

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CN203636124U true CN203636124U (en) 2014-06-11

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105215478A (en) * 2015-11-19 2016-01-06 天津天海同步科技有限公司 A kind of axle class gear-hobbing clamp
CN105689812A (en) * 2016-04-07 2016-06-22 中车戚墅堰机车车辆工艺研究所有限公司 High-precision gear centering and clamping device based on inner hole centering and machining method of high-precision gear centering and clamping device
CN106270815A (en) * 2015-06-12 2017-01-04 浙江东风齿轮有限公司 A kind of axis products gear-hobbing clamp
CN106808031A (en) * 2017-02-28 2017-06-09 西安法士特汽车传动有限公司 A kind of high accuracy quick change axle gear grinding clamp
CN108296725A (en) * 2018-04-16 2018-07-20 杭州吉利机械有限公司 Split type differential casing internal expanding processing method
CN110449615A (en) * 2019-08-09 2019-11-15 东风格特拉克汽车变速箱有限公司 A kind of rear pull type self-centering hydraulic pressure fixture of the airtight detection of band

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106270815A (en) * 2015-06-12 2017-01-04 浙江东风齿轮有限公司 A kind of axis products gear-hobbing clamp
CN105215478A (en) * 2015-11-19 2016-01-06 天津天海同步科技有限公司 A kind of axle class gear-hobbing clamp
CN105689812A (en) * 2016-04-07 2016-06-22 中车戚墅堰机车车辆工艺研究所有限公司 High-precision gear centering and clamping device based on inner hole centering and machining method of high-precision gear centering and clamping device
CN106808031A (en) * 2017-02-28 2017-06-09 西安法士特汽车传动有限公司 A kind of high accuracy quick change axle gear grinding clamp
CN106808031B (en) * 2017-02-28 2019-08-16 西安法士特汽车传动有限公司 A kind of high-precision quick change axis gear grinding clamp
CN108296725A (en) * 2018-04-16 2018-07-20 杭州吉利机械有限公司 Split type differential casing internal expanding processing method
CN110449615A (en) * 2019-08-09 2019-11-15 东风格特拉克汽车变速箱有限公司 A kind of rear pull type self-centering hydraulic pressure fixture of the airtight detection of band

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Effective date of registration: 20160303

Address after: 241006 Wuhu economic and Technological Development Zone, Anhui, No. 8 Changchun Road

Patentee after: CHERY AUTOMOBILE CO., LTD.

Address before: 241009 Wuhu economic and Technological Development Zone, Anhui, No. 8 Changchun Road

Patentee before: Saic Chery Automobile Co., Ltd.

C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 241000 Anhui city of Wuhu Province, Hunan Road economic and Technological Development Zone No. 11

Patentee after: Wuhu WanLiYang transmission Co., Ltd.

Address before: 241006 Wuhu economic and Technological Development Zone, Anhui, No. 8 Changchun Road

Patentee before: CHERY AUTOMOBILE CO., LTD.