CN103203649A - Power head lifting mechanism of gantry movable type numerical-control drilling and milling machine - Google Patents

Power head lifting mechanism of gantry movable type numerical-control drilling and milling machine Download PDF

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Publication number
CN103203649A
CN103203649A CN2013101301410A CN201310130141A CN103203649A CN 103203649 A CN103203649 A CN 103203649A CN 2013101301410 A CN2013101301410 A CN 2013101301410A CN 201310130141 A CN201310130141 A CN 201310130141A CN 103203649 A CN103203649 A CN 103203649A
Authority
CN
China
Prior art keywords
power head
unit head
screw
bearing block
ball
Prior art date
Application number
CN2013101301410A
Other languages
Chinese (zh)
Inventor
陆松茂
武文
周敏铨
薛静清
邵燕瑛
Original Assignee
无锡华联精工机械有限公司
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
Application filed by 无锡华联精工机械有限公司 filed Critical 无锡华联精工机械有限公司
Priority to CN2013101301410A priority Critical patent/CN103203649A/en
Publication of CN103203649A publication Critical patent/CN103203649A/en

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Abstract

A power head lifting mechanism of a gantry movable type numerical-control drilling and milling machine comprises a power head box. The power head lifting mechanism is characterized in that linear guide rails are fixedly mounted on two sides of the power head box, guide sliders are slidably connected onto the linear guide rails and are fixedly mounted on mounting seats, and the mounting seats are fixedly mounted on a moving plate; and a ball screw is fixedly arranged in the power head box and is in transmission connection with an output shaft of a servo motor, the axis of the ball screw is parallel to the linear guide rails, the servo motor is fixedly arranged inside the power head box, an upper bearing block and a lower bearing block are rotationally mounted on the ball screw, bearings are arranged in both the upper bearing block and the lower bearing block, the upper bearing block and the lower bearing block are fixedly connected with the power head box, a nut is screwed on the ball screw and is positioned between the upper bearing block and the lower bearing block and is fixedly connected onto a nut seat, and the nut seat is fixedly connected onto the moving plate. The power head lifting mechanism has the advantages that eccentric torque generated by a cutting tool is effectively reduced, the service life of the tool is prolonged, the cutting machining precision of the tool is improved, and space occupied by the power head lifting mechanism is reduced.

Description

The unit head elevating mechanism of movable gantry numerical control drilling-milling bed
Technical field
The present invention relates to numerical control drilling-milling turning equipment technical field, be specifically related to the mounting structure of drag chain in the movable gantry numerical control drilling-milling bed.
Background technology
The numerical control gantry drilling and milling machine is the process equipment at heavy parts, the design feature of movable gantry numerical control drilling-milling bed is that portal frame moves, stationary table, so it to the weight of workpiece without limits, can processing super long type part, along with improving constantly of its automation performance and compoundization degree, obtain application more and more widely.In the movable numerically-controlled drilling and milling machine of traditional large-sized gantry, it is for the line slideway of the drive mechanism of lifting brill milling unit head and the back side that ball screw is mounted in the lifting main shaft, and be to place with lifting main shaft flat raft, so whole drive mechanism can be arranged very widely, increase the width of lathe thus, owing to the outstanding body of lifting main shaft in this arrangement is big, can produce eccentric moment during machining simultaneously, easily shorten the service life of cutter, and the machining low precision.
Summary of the invention
The applicant improves at above-mentioned shortcoming of the prior art, a kind of unit head elevating mechanism of movable gantry numerical control drilling-milling bed is provided, the generation that it has reduced the cutting tool eccentric moment has effectively improved cutter life and machining precision, and has reduced to take up room.
Technical scheme of the present invention is as follows:
The unit head elevating mechanism of movable gantry numerical control drilling-milling bed, comprise unit head casing, ball wire bar pair and line slideway auxiliary, line slideway in the described line slideway auxiliary is fixedly mounted on the both sides of unit head casing, slidely connect guide runner on the line slideway, guide runner is fixedly mounted on the mount pad, and mount pad is fixedly installed on the movable plate; Described ball wire bar pair is contained in the unit head casing, ball-screw in the described ball wire bar pair and the output shaft of servomotor are in transmission connection, the axis of ball-screw is parallel to line slideway, servomotor is installed on the unit head box house, be rotatablely equipped with top chock and step on the ball-screw, bearing all is housed in top chock and the step, top chock and step and unit head casing are affixed, ball-screw between top chock and step is bolted with screw, screw is fixed on the nut seat, and nut seat is fixed on the movable plate.
Its further technical scheme is:
Described top chock and the step axially outside all are connected with cover plate, and cover plate is used for the axial restraint of bearing.
The described fixing position of top chock and step and unit head casing all is equipped with backing plate.
Technique effect of the present invention:
The present invention will be installed on the two sides of unit head casing for the line slideway of the drive mechanism of lifting unit head, ball screw is arranged in the space of unit head box house, changed the mounting structure that traditional line slideway and ball screw are installed on the main shaft back side, reduced to take up room, and ball screw is positioned as close to the lifting main shaft, the lifting alignment of shafts, line slideway center and ball screw center are in the same plane basically, the generation of eccentric moment when having reduced machining has like this improved cutter life and machine finish effectively.
Description of drawings
Fig. 1 is main TV structure schematic diagram of the present invention.
Fig. 2 be the A of Fig. 1 to view, broken section.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the C-C cutaway view of Fig. 1.
Fig. 5 is the enlarged drawing of I portion among Fig. 3.
Fig. 6 is the enlarged drawing of II portion among Fig. 3.
Wherein: 1, unit head casing; 2, line slideway; 3, guide runner; 4, mount pad; 5, movable plate; 6, ball-screw; 7, servomotor; 8, top chock; 9, step; 10, bearing; 11, screw; 12, nut seat; 13, cover plate; 14, backing plate.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
See Fig. 1, Fig. 2, Fig. 3, the present invention includes unit head casing 1, ball wire bar pair and line slideway auxiliary, line slideway 2 in the described line slideway auxiliary is fixedly mounted on the both sides of unit head casing 1, slidely connect guide runner 3 on the line slideway 2, guide runner 3 is fixedly mounted on the mount pad 4, mount pad 4 is fixedly installed on the movable plate 5, and line slideway 2 and guide runner 3 constitute described line slideway auxiliary; Described ball wire bar pair is contained in the unit head casing 1, ball-screw 6 in the described ball wire bar pair is in transmission connection with the output shaft of servomotor 7, the axis of ball-screw 6 is parallel to line slideway 2, servomotor 7 is installed on unit head casing 1 inside, be rotatablely equipped with top chock 8 and step 9 on the ball-screw 6, see Fig. 5, Fig. 6, in top chock 8 and the step 9 bearing 10 is housed all, top chock 8 and step 9 all are equipped with backing plate 14 with the described fixing position of unit head casing 1, see Fig. 4, described top chock 8 and step 9 axially all are connected with cover plate 13 in the outside, cover plate 13 is used for the axial restraint of bearing 10, top chock 8 and step 9 are affixed with unit head casing 1, ball-screw 6 between top chock 8 and step 9 is bolted with screw 11, screw 11 constitutes ball wire bar pair with ball-screw 6, and described screw 11 is fixed on the nut seat 12, and nut seat 12 is fixed on the movable plate 5.
The method of operation of the present invention is as follows:
At first, mount pad 4 is installed on the movable plate 5 by securing member, guide runner 3 is installed on the mount pad 4 by securing member, line slideway 2 is installed on the two sides of unit head casing 1 by securing member, pluck out a block space in unit head casing 1 inside, be used for installing described ball wire bar pair, the two ends of ball screw 6 are respectively by bearing 10 and top chock 8, bearing 10 and step 9 connect, top chock 8 and step 9 are fixed on unit head casing 1 inside by securing member, and with backing plate 14 bearing 10 axial restraints at ball screw 6 two ends, screw 11 is fixed on the nut seat 12 by securing member, and nut seat 12 then is to be fixed on the movable plate 5 by securing member.During work, because nut seat 12 and guide runner 3 are fixed on the movable plate 5, and ball screw 6 and line slideway 2 are fixed on the unit head casing 1, when servomotor 7 drove ball screw 6 rotations, whole unit head casing 1 was finished the transmission feeding of boring milling unit head together with ball screw 6 and line slideway 2.
The present invention will be installed on the two sides of unit head casing for the line slideway of the drive mechanism of lifting unit head, ball screw is arranged in the space of unit head box house, and be positioned as close to the lifting main shaft, reduced to take up room, the lifting alignment of shafts, line slideway center and ball screw center are in the same plane basically, the generation of eccentric moment when having reduced machining has like this improved cutter life and machine finish effectively.
More than describing is explanation of the invention, is not that institute of the present invention restricted portion within protection scope of the present invention, can be done any type of modification referring to claim to the restriction of invention.

Claims (3)

1. the unit head elevating mechanism of movable gantry numerical control drilling-milling bed, comprise unit head casing (1), ball wire bar pair and line slideway auxiliary, it is characterized in that: the line slideway in the described line slideway auxiliary (2) is fixedly mounted on the both sides of unit head casing (1), slidely connect guide runner (3) on the line slideway (2), guide runner (3) is fixedly mounted on the mount pad (4), and mount pad (4) is fixedly installed on the movable plate (5); Described ball wire bar pair is contained in the unit head casing (1), ball-screw in the described ball wire bar pair (6) is in transmission connection with the output shaft of servomotor (7), the axis of ball-screw (6) is parallel to line slideway (2), servomotor (7) is installed on unit head casing (1) inside, be rotatablely equipped with top chock (8) and step (9) on the ball-screw (6), in top chock (8) and the step (9) bearing (10) is housed all, top chock (8) and step (9) are affixed with unit head casing (1), ball-screw (6) between top chock (8) and step (9) is bolted with screw (11), screw (11) is fixed on the nut seat (12), and nut seat (12) is fixed on the movable plate (5).
2. press the unit head elevating mechanism of the described movable gantry numerical control drilling-milling of claim 1 bed, it is characterized in that: described top chock (8) and step (9) the axially outside all are connected with cover plate (13), and cover plate (13) is used for the axial restraint of bearing (10).
3. by the unit head elevating mechanism of the described movable gantry numerical control drilling-milling of claim 1 bed, it is characterized in that: top chock (8) and step (9) all are equipped with backing plate (14) with the described fixing position of unit head casing (1).
CN2013101301410A 2013-04-16 2013-04-16 Power head lifting mechanism of gantry movable type numerical-control drilling and milling machine CN103203649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013101301410A CN103203649A (en) 2013-04-16 2013-04-16 Power head lifting mechanism of gantry movable type numerical-control drilling and milling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101301410A CN103203649A (en) 2013-04-16 2013-04-16 Power head lifting mechanism of gantry movable type numerical-control drilling and milling machine

Publications (1)

Publication Number Publication Date
CN103203649A true CN103203649A (en) 2013-07-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013101301410A CN103203649A (en) 2013-04-16 2013-04-16 Power head lifting mechanism of gantry movable type numerical-control drilling and milling machine

Country Status (1)

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CN (1) CN103203649A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201124312Y (en) * 2007-11-29 2008-10-01 济南二机床集团有限公司 Accessory milling head
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
CN202162427U (en) * 2011-07-13 2012-03-14 高密市恒维机械有限公司 Numerical-control planer type milling machine
CN202655914U (en) * 2012-04-23 2013-01-09 高密市恒维机械有限公司 Ram structure of machine tool
CN202861773U (en) * 2012-11-19 2013-04-10 山东宏康机械制造有限公司 Ram device of gantry machining center
CN203236275U (en) * 2013-04-16 2013-10-16 无锡华联精工机械有限公司 Lifting mechanism of gantry-movable numerically controlled drilling and milling machine power head

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201124312Y (en) * 2007-11-29 2008-10-01 济南二机床集团有限公司 Accessory milling head
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
CN202162427U (en) * 2011-07-13 2012-03-14 高密市恒维机械有限公司 Numerical-control planer type milling machine
CN202655914U (en) * 2012-04-23 2013-01-09 高密市恒维机械有限公司 Ram structure of machine tool
CN202861773U (en) * 2012-11-19 2013-04-10 山东宏康机械制造有限公司 Ram device of gantry machining center
CN203236275U (en) * 2013-04-16 2013-10-16 无锡华联精工机械有限公司 Lifting mechanism of gantry-movable numerically controlled drilling and milling machine power head

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SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130717

C02 Deemed withdrawal of patent application after publication (patent law 2001)