JP2004025433A - Multi-head lathe - Google Patents

Multi-head lathe Download PDF

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Publication number
JP2004025433A
JP2004025433A JP2003069157A JP2003069157A JP2004025433A JP 2004025433 A JP2004025433 A JP 2004025433A JP 2003069157 A JP2003069157 A JP 2003069157A JP 2003069157 A JP2003069157 A JP 2003069157A JP 2004025433 A JP2004025433 A JP 2004025433A
Authority
JP
Japan
Prior art keywords
headstock
transfer
tool
bed
transfer screw
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.)
Abandoned
Application number
JP2003069157A
Other languages
Japanese (ja)
Inventor
Hyun-Keun Han
Seong-Oh Hong
ソン−オー,ホン
ヒョン−クン,ハン
Original Assignee
Hwacheon Machine Tool Co Ltd
ファチョン マシーン ツール カンパニー リミテッド
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to KR1020020015179A priority Critical patent/KR20030075805A/en
Application filed by Hwacheon Machine Tool Co Ltd, ファチョン マシーン ツール カンパニー リミテッド filed Critical Hwacheon Machine Tool Co Ltd
Publication of JP2004025433A publication Critical patent/JP2004025433A/en
Abandoned legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22Feeding members carrying tools or work
    • B23Q5/34Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B3/00General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
    • B23B3/30Turning-machines with two or more working-spindles, e.g. in fixed arrangement

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-head lathe capable of preventing that transfer accuracy of a head stock and a tool rest attached to a bed is deteriorated by the external causes such as heat generated during machining. <P>SOLUTION: The normal multi-head lathe includes a first headstock 2 and a second tool rest 3 transferred along the bed 1 provided on the frame, a first tool rest 6 and a second headstock 7. Horizontal guide groove part 11 is formed in the center of the bed, a first servo motor 4 is included in the one side of the inside of the guide groove part, and a first transfer screw 41 fastened through a ball nut 31 is provided at the lower part of the first headstock. A servo motor 5 is included in the other side of the inside of the guide groove part. A second transfer screw 51 fastened through the ball nut, is provided at the lower part of the second tool rest on the same central axis as the first transfer screw. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a multi-head lathe that enables precise transfer of a headstock and a tool table, and more specifically, to a headstock and a tool table mounted on a bed due to external causes such as heat generated during processing. The present invention relates to a multi-head lathe capable of preventing a decrease in transfer precision.
[0002]
[Prior art]
In general, a multi-head lathe increases processing efficiency by sequentially processing both sides of a workpiece through a single machine tool equipped with two headstocks and two tool stands. It means a lathe developed to maximize productivity.
[0003]
FIG. 4 is a front view showing a conventional multi-head lathe, and FIG. 5 is a side view. First, the configuration will be described as follows.
[0004]
A frame provided with a bed 100 on the upper side, a first headstock 400 and a second tool stand 500 mounted on the bed 100 and transferred to the X-axis via two transfer screws 200 and 300; The first tool stand 600 and the second headstock 700 are provided below the first tool head 400 and are mounted between the first headstock 400 and the second tool stand 500.
[0005]
Therefore, when processing a workpiece through the lathe configured as described above, first, after receiving the workpiece via the first headstock 400, one side of the workpiece is received via the first tool base 600. After the work is processed and the work piece whose one side is processed by the first headstock 400 is moved to the second headstock 700, the other side of the work piece is processed via the second tool stand 500. Then, the machining is completed by finally discharging the workpiece through the second tool stand 500 to the outside.
[0006]
Particularly, by performing the above-described processing, the first headstock 400 and the second tool table 500 are transferred along the bed 100 via two transfer screws 200 and 300 that are horizontal to each other. is there.
[0007]
[Problems to be solved by the invention]
However, when the first headstock and the second tool table are transferred by the respective transfer screws parallel to each other, the parallelism between the two screws is different due to heat generated at the time of repetitive transfer, and a transfer error occurs. Due to the occurrence, there is a problem that the processing accuracy of the workpiece is reduced.
[0008]
In addition, the transfer screw of the first headstock that transfers only one side and the transfer screw of the second tool stand that transfers only the other side have the same length as the length of the bed, and are mounted on the upper and lower sides, thereby increasing the length. There is a problem that the cost is increased by mounting the transfer screw.
[0009]
Also, as shown in FIG. 5, a guide rail 101 is mounted in front of and behind the bed 100, and is inserted into the guide rail 101 below the first headstock 400 and the second tool base 500. The first headstock 400 and the second tool stand are formed by forming fine grooves between the guide rail 101 and the guide grooves 401 and 501. When the workpiece 500 is transferred along the guide rail 101 and is processed at the same time, there is also a problem that a fine swing phenomenon occurs and the processing accuracy is reduced.
[0010]
Therefore, the present invention has been devised in order to solve the conventional problems as described above, and mounting a transfer screw for transferring the first headstock and the second tool stand on both sides on the same central shaft. This minimizes the change in the center error between the transfer screws with respect to the heat generated during the repetitive transfer of the first headstock and the second tool stand, thereby preventing the accuracy from being reduced during machining. It is an object of the present invention to provide a multi-head lathe that can perform the operation.
[0011]
In addition, by reducing the length of each transfer screw and mounting each transfer screw on the same central axis so as to correspond to the transfer process of the first headstock and the second tool stand, Another object is to reduce the waste of the installation of the lower transfer screw.
[0012]
In addition, the bed and the first headstock and the second toolrest are completely brought into close contact with each other via the load of the first headstock and the second toolrest, thereby transferring the first headstock and the second toolrest. It also has the purpose of preventing the shaking phenomenon at the time.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a first headstock and a second tool table which are transported along a bed provided on a frame, and a first headstock and a lower part of a lower part of the bed. In an ordinary multi-head lathe including a first tool stand and a second headstock mounted between two tool stands, a horizontal guide groove is formed at the center of the bed, and the inside of the guide groove is formed. One side includes a first servomotor, and a lower part of the first headstock is provided with a first transfer screw fastened through a ball nut, and a second transfer screw is mounted on the other side inside the guide groove. A second transfer screw including a servomotor and fastened to a lower portion of the second tool base via a ball nut is mounted on the same central axis as the first transfer screw.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
[0015]
FIG. 1 is a front view showing a multi-head lathe of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. 1. First, the configuration will be described as follows.
[0016]
A first headstock 2 and a second tool table 3 mounted horizontally on a frame and transferred along the bed 1, and fixed to a lower portion of the frame, which is a lower portion of the bed 1, the first headstock In a general multi-head lathe including a first tool stand 6 and a second headstock 7 mounted between the second and second tool stands 3, a horizontal guide groove 11 is formed at the center of the bed 1. A first transfer screw 41 fastened via a ball nut 21 to a lower portion of the first headstock 2 is mounted on one side of the inside of the guide groove 11. On the other side, a second transfer screw 51 fastened to the lower part of the second tool base 3 via the ball nut 31 is mounted on the same central axis as the first transfer screw 41.
[0017]
The first and second transfer screws 41 and 51 are respectively rotated outside the frame, which is the outer ends of the first and second transfer screws 41 and 51, and the first headstock 2 and the second tool table are rotated. The servomotors 4 and 5 are mounted so that the robot 3 can be transported by itself.
[0018]
Also, the inner ends of the first and second transfer screws 41 and 51 are fixed via a separate bracket including a bearing, and the inner ends are required for the first headstock 2 and the second tool stand 3. It is located just above the second headstock 7 so that a proper transfer process can be obtained. In addition, since the inner ends of the first and second transfer screws 41 and 51 are separated from each other, the first and second transfer screws 41 and 51 can be rotated without interference with each other.
[0019]
Therefore, when the first servomotor 4 mounted on one side of the frame is operated, the first transfer screw 41 rotates to transfer the first headstock 2 along the bed 1 and mount it on the other side. When the second servomotor 5 is operated, the second transfer screw 51 rotates, and the second tool table 3 is transferred along the bed 1.
[0020]
As described above, when the first headstock 2 and the second tool table 3 are repeatedly transferred, heat is generated in the first and second transfer screws 41 and 51, but the first and second transfer screws 41 and 51 are generated. Are arranged on the same central axis, thereby minimizing a change in mutual center error due to heat.
[0021]
Therefore, by minimizing the range of the center error between the first and second transfer screws 41 and 51, the transfer error of the first headstock 2 and the second tool stand 3 during the processing is reduced, and the processing accuracy is improved. That is, it can be prevented from being lowered.
[0022]
In addition, since the length of each transfer screw is reduced so as to correspond to the transfer process of the first headstock 2 and the second tool stand 3, the mounting cost of the transfer screw can be minimized. .
[0023]
In addition, the bed 1 and the first headstock 2 and the second toolrest 3 are completely brought into close contact with each other via the load of the first headstock 2 and the second toolrest 3, so that the first headstock 2 It is possible to prevent the swinging phenomenon during the transfer of the second tool stand 3.
[0024]
FIG. 3 is an enlarged view of a portion B of FIG. 2, wherein a front inclined surface 12 inclined forward is formed at an upper portion of the bed 1, and front and rear protruding guides are provided before and behind the front inclined surface 12. 121 and 122 are formed, and rear inclined surfaces 22 and 32 that are in close contact with the front inclined surface 12 are formed below the first headstock 2 and the second tool stand 3. Before and behind the front and rear protruding guides 121 and 122, rear insertion grooves 221, 321, 222 and 322 are formed before and after the front and rear ends 22 and 32.
[0025]
Therefore, a front inclined surface 12 is formed on the upper portion of the bed 1, and rear inclined surfaces 22, 32 to which the front inclined surface 12 is tightly attached below the first headstock 2 and the second tool stand 3. Is formed, a force is generated that causes the first headstock 2 and the second tool rest 3 to slide downward along the front inclined surface 12 due to the load.
[0026]
Behind the rear inclined surfaces 22 and 32 of the first headstock 2 and the second tool stand 3, rear insertion grooves 222 and 322 into which the rear projecting guide 122 of the front inclined surface 12 is inserted are formed. Since the rear protruding guide 122 and the rear insertion groove portions 222 and 322 are completely adhered to each other, the front and rear inclined surfaces 12, 22, and 32 are kept in close contact with each other without slipping.
[0027]
Further, front insertion grooves 221 and 321 into which the front projecting guides 121 of the front inclined surface 12 are inserted are formed in front of the rear inclined surfaces 22 and 32 of the first headstock 2 and the second tool stand 3. Thus, the state where the front protruding guide 121 and the front insertion groove portions 221 and 321 are in close contact with each other is maintained.
[0028]
Accordingly, the first headstock 2 and the second tool rest 3 are completely brought into close contact with the bed 1 without any gap via the load, so that the first headstock 2 and the second tool rest 3 are usually placed on the bed. In this way, it is possible to prevent the swaying phenomenon that occurs when the sheet is transferred.
[0029]
【The invention's effect】
As described above, the present invention minimizes the change in the center error between the transfer screws with respect to the heat generated during the repeated transfer of the first headstock and the second tool table during processing, thereby reducing the number of errors. There is an effect that the transfer accuracy of the first headstock and the second tool table can be improved, and a multi-head lathe capable of obtaining high precision can be provided.
[0030]
Also, by reducing the length of each transfer screw corresponding to the transfer process of the first headstock and the second tool stand, it is possible to reduce the cost of mounting the transfer screw and reduce the manufacturing cost of the multi-head lathe. There is also an effect.
[0031]
In addition, the bed, the first headstock, and the second tool rest are completely adhered to each other to prevent the first headstock and the second tool rest from swaying at the time of transfer, thereby preventing a decrease in transfer precision. As a result, there is an effect that not only the processing precision can be improved, but also the transfer noise can be prevented.
[0032]
Although the present invention has been described with reference to an embodiment illustrated in the drawings, it is intended to be illustrative only and that various modifications and equivalents may occur to those skilled in the art. It will be appreciated that other embodiments are possible.
[Brief description of the drawings]
FIG. 1 is a front view showing a multi-head lathe of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is an enlarged view of a portion B in FIG. 2;
FIG. 4 is a front view showing a conventional multi-head lathe.
FIG. 5 is a side view showing a conventional multi-head lathe.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 Bed 11 Guide groove 12 Front inclined surface 121 Front projecting guide 122 Rear projecting guide 2 First headstock 21 Ball nut 22 Rear inclined surface 221 Front insertion groove 222 Rear insertion groove 3 Second tool table 31 Ball nut 32 Rear inclined surface 321 Front insertion groove 322 Rear insertion groove 4 First servo motor 41 First transfer screw 5 Second servo motor 51 Second transfer screw 6 First tool stand 7 Second headstock

Claims (3)

  1. A first headstock 2 and a second tool table 3 which are transferred along a bed 1 provided on a frame, and a lower portion of the bed 1 and mounted between the first headstock 2 and the second tool table 3. In the usual multi-head lathe including the first tool stand 6 and the second headstock 7
    At the center of the bed 1, a horizontal guide groove 11 is formed.
    A first servomotor 4 is included on one side of the guide groove 11, and a first transfer screw 41 fastened via a ball nut 21 is attached to a lower portion of the first headstock 2.
    A second servomotor 5 is included on the other side inside the guide groove 11, and a second transfer screw 51 fastened to a lower portion of the second tool base 3 via a ball nut 31 is the first transfer screw 51. A multi-head lathe which is mounted on the same central axis as 41.
  2. The inner ends of the first and second transfer screws 41 and 51 are located directly above the second headstock 7 so that a necessary transfer process of the first headstock 2 and the second tool stand 3 can be obtained. The multi-head lathe according to claim 1, wherein the lathes are installed so as to be separated from each other.
  3. A front inclined surface 12 inclined forward is formed on an upper portion of the bed 1, and front and rear protruding guides 121 and 122 are formed in front of and behind the front inclined surface 12, and the first main shaft is formed. At the lower part of the table 2 and the second tool stand 3, there are formed rear inclined surfaces 22 and 32 which are in close contact with the front inclined surface 12, and before and after the rear inclined surfaces 22 and 32, the front and rear are provided. The multi-head lathe according to claim 1, wherein the rear insertion grooves (221, 321, 222, 322) are formed before the protrusion guides (121, 122) are inserted.
JP2003069157A 2002-03-20 2003-03-14 Multi-head lathe Abandoned JP2004025433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020020015179A KR20030075805A (en) 2002-03-20 2002-03-20 Multiple spindle lathe

Publications (1)

Publication Number Publication Date
JP2004025433A true JP2004025433A (en) 2004-01-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003069157A Abandoned JP2004025433A (en) 2002-03-20 2003-03-14 Multi-head lathe

Country Status (3)

Country Link
JP (1) JP2004025433A (en)
KR (1) KR20030075805A (en)
DE (1) DE10311721A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102189432A (en) * 2011-03-25 2011-09-21 无锡华联精工机械有限公司 Transverse transmission mechanism of numerically controlled drilling and milling machine
CN102189405A (en) * 2011-03-25 2011-09-21 无锡华联精工机械有限公司 Numerical control milling and drilling machine
CN102189429A (en) * 2011-03-25 2011-09-21 无锡华联精工机械有限公司 Beam transmission structure for numerical control milling and drilling machine
CN102699694A (en) * 2012-06-19 2012-10-03 无锡华联精工机械有限公司 Manual displacement mechanism of rotary machine tool
CN103878409A (en) * 2014-03-14 2014-06-25 江苏映彤机械设备有限公司 Digital controlled drill
CN104493238A (en) * 2014-09-28 2015-04-08 上海奥林汽车安全系统有限公司 Equipment for machining multiple holes of back cover hinge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129601A (en) * 1983-01-12 1984-07-26 Shiyouun Kosakusho:Kk Machine tool
JPH0261542U (en) * 1988-10-27 1990-05-08
JP2518457B2 (en) * 1990-07-05 1996-07-24 三菱電機株式会社 How to synchronize the feed axis of the lathe
JPH04223802A (en) * 1990-12-26 1992-08-13 Tsugami Corp Compound machining lathe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102189432A (en) * 2011-03-25 2011-09-21 无锡华联精工机械有限公司 Transverse transmission mechanism of numerically controlled drilling and milling machine
CN102189405A (en) * 2011-03-25 2011-09-21 无锡华联精工机械有限公司 Numerical control milling and drilling machine
CN102189429A (en) * 2011-03-25 2011-09-21 无锡华联精工机械有限公司 Beam transmission structure for numerical control milling and drilling machine
CN102189405B (en) * 2011-03-25 2013-10-16 无锡华联精工机械有限公司 Numerical control milling and drilling machine
CN102699694A (en) * 2012-06-19 2012-10-03 无锡华联精工机械有限公司 Manual displacement mechanism of rotary machine tool
CN103878409A (en) * 2014-03-14 2014-06-25 江苏映彤机械设备有限公司 Digital controlled drill
CN104493238A (en) * 2014-09-28 2015-04-08 上海奥林汽车安全系统有限公司 Equipment for machining multiple holes of back cover hinge

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Publication number Publication date
DE10311721A1 (en) 2003-10-16
KR20030075805A (en) 2003-09-26

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Effective date: 20040604