CN201881189U - High-precision numerical-control vertical lathe saddle driving device - Google Patents

High-precision numerical-control vertical lathe saddle driving device Download PDF

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Publication number
CN201881189U
CN201881189U CN 201020669730 CN201020669730U CN201881189U CN 201881189 U CN201881189 U CN 201881189U CN 201020669730 CN201020669730 CN 201020669730 CN 201020669730 U CN201020669730 U CN 201020669730U CN 201881189 U CN201881189 U CN 201881189U
Authority
CN
China
Prior art keywords
ram
ball screw
turning head
screw assembly
vertical lathe
Prior art date
Application number
CN 201020669730
Other languages
Chinese (zh)
Inventor
张文武
孙先柱
杨志勇
石志民
赵康原
关涛
赵海东
于今
董学哲
Original Assignee
齐重数控装备股份有限公司
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 齐重数控装备股份有限公司 filed Critical 齐重数控装备股份有限公司
Priority to CN 201020669730 priority Critical patent/CN201881189U/en
Application granted granted Critical
Publication of CN201881189U publication Critical patent/CN201881189U/en

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Abstract

The utility model discloses a high-precision numerical-control vertical lathe saddle driving device, the specific structure of which is as follows: a left balancing oil cylinder and a right balancing oil cylinder with equal diameters are symmetrically arranged on oil cylinder supports at the left side and the right side of a ram of a turning head; the oil cylinder supports are connected with a rotating sliding seat through the ram of the turning head; a vertically feeding servo motor and a speed reducer are connected with the rotating sliding seat at the rear side of the ram of the turning head through a speed reducer support; a ball screw assembly is fixed on the speed reducer support by a locking nut; and the upper end of the ball screw assembly is connected with the speed reducer through a coupling, and the rear end of the ball screw assembly is connected with the ram of the turning head through a ball screw assembly support. The high-precision numerical-control vertical lathe saddle driving device has the following advantages: the balancing oil cylinders are symmetrically arranged, the bending deformation caused by gravity of the balancing ram is eliminated; and simultaneously, a driving motor is moved to the rear side of the ram from the original left side or right side of the ram, and the direct connection of a motor accelerator/reducer screw is adopted to replace an original feeding speed changing box, therefore, the ball screw generates pre-tensioning counter-force when being tensioned, so that bending and deformation can be avoided, and the geometric accuracy is not influenced.

Description

High precision numerical control vertical lathe knife rack driving mechanism
Technical field
The utility model relates to a kind of high precision numerical control vertical lathe knife rack driving mechanism.
Background technology
Be accompanied by the quick upgrading of technical field levels such as China naval vessel, military project, engineering machinery, electric power, domestic equipment manufacture is also more and more higher to the required precision of numerical control vertical lathe, has especially become the heavy focal issue of high-precision vertical lathe for every how much high-precision requirement of turning head.Existing vertical lathe knife rest adopts the distribution form of left and right sides single-sided arrangement balancing cylinder and leading screw more, because what produce during balancing cylinder balance knife rest ram one-sidedly can make ram produce certain flexural deformation to active force, simultaneously again because ball-screw also can produce the pretension counter-force when prestretched, this pretension counter-force and oil cylinder counter-force meeting acting in conjunction are in ram, the flexural deformation of ram on left and right directions is further strengthened, thereby directly influence the every geometric accuracy of knife rest.In order to solve this technical barrier, we have carried out a large amount of research and test, the important research achievement that the utility model is exactly wherein to be finished, this achievement content is under the jurisdiction of " the high-grade vertical car Compositions of metal-working machines that mills of HDVTM160 * 10/8L-MC " great special project of national science and technology, project number: 2010ZX04001-031.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of high precision numerical control vertical lathe knife rack driving mechanism, this device has characteristics such as balanced structure is rationally distributed, the flexural deformation of knife rest ram is little, knife rest driving rigidity is big, compact conformation, has application potential widely.
The technical scheme in the invention for solving the technical problem is: the left and right balancing cylinder of two equal diameters is arranged symmetrically on the cylinder bracket of the turning head ram left and right sides, and cylinder bracket is connected with rotary slide base by the turning head ram; Rear side at the turning head ram, vertical feed servomotor and decelerator are connected with rotary slide base by reducer stent, ball screw assembly, is fixed on the reducer stent by locking nut, its upper end is connected with decelerator by shaft coupling, and the rear end is connected with the turning head ram by the ball-screw assistant support.The pre-load nut of ball screw assembly, is housed in the bottom of rotary slide base.
The utility model has the advantages that: because balancing cylinder adopts the symmetric arrangement structure, when balance ram gravity, the stressed equal and opposite in direction in both sides, direction is identical, so the both sides bending moment is cancelled out each other, has eliminated because the flexural deformation that balance ram gravity produces; Simultaneously drive motors is moved to the ram rear side by the left side or the right side of original ram, and adopt motor acceleration and deceleration device leading screw direct connection to replace former feed change case, owing to adopt the direct connection structure, generation pretension counter-force does not produce flexural deformation during the ballscrew prestretched does not influence geometric accuracy.Owing to adopt the high accuracy reductor, can realize big retarding than slowing down, realize the big inertia coupling of small machine, simultaneously because reducing of transmission back clearance can better improve the knife rest positional precision.The utlity model has rationally distributed, characteristics such as the flexural deformation of knife rest ram is little, knife rest driving rigidity is big, compact conformation.
Description of drawings
Below in conjunction with drawings and embodiments the utility model is described in detail.
Fig. 1 is the front view of the utility model embodiment 1.
Fig. 2 is the left cutaway view of Fig. 1.
Number in the figure:
1, left balancing cylinder 2, right balancing cylinder 3, turning head ram 4, servomotor
5, decelerator 6, shaft coupling 7, locking nut 8, reducer stent 9, rotary slide base
10, ball screw assembly, 11, cylinder bracket 12, ball-screw assistant support 13, pre-load nut.
The specific embodiment
As shown in Figure 1 and Figure 2, the utility model knife rack driving mechanism adopts the balancing cylinder 1,2 of two equal diameters to be arranged symmetrically on the cylinder bracket 11 of the left and right sides of turning head ram 3, cylinder bracket 11 is connected with turning head ram 3 and rotary slide base 9, by balancing cylinder 1,2 can complete equipilibrium turning head ram 3 weight, and guarantee that turning head ram 3 does not produce flexural deformation.Rear side at lathe saddle ram 3, vertical feed servomotor 4 and decelerator 5 are connected with rotary slide base 9 by reducer stent 8, ball screw assembly, 10 is connected with turning head ram 3 by ball-screw assistant support 12, for improving ball screw assembly, 10 rigidity, need ball screw assembly, 10 to carry out prestretched, method is as follows: at first ball screw assembly, 10 is fixed on the reducer stent 8 by locking nut 7, and fixedly connected with knife rest ram 3 by ball-screw assistant support 12, regulate ball screw assembly, and carry out prestretched by the requirement of ball-screw sample, at last, the ball screw assembly, 10 through pre-load nut 13 prestretcheds is connected with decelerator 5 by shaft coupling 6.

Claims (2)

1. high precision numerical control vertical lathe knife rack driving mechanism, it is characterized in that: the left and right balancing cylinder of two equal diameters (1,2) is arranged symmetrically on the cylinder bracket (11) of turning head ram (3) left and right sides, and cylinder bracket (11) is connected with rotary slide base (9) by turning head ram (3); Rear side in turning head ram (3), vertical feed servomotor (4) and decelerator (5) are connected with rotary slide base (9) by reducer stent (8), ball screw assembly, (10) is fixed on the reducer stent (8) by locking nut (7), its upper end is connected with decelerator (5) by shaft coupling (6), and the rear end is connected with turning head ram (3) by ball-screw assistant support (12).
2. high precision numerical control vertical lathe knife rack driving mechanism according to claim 1 is characterized in that: the pre-load nut (13) that ball screw assembly, (10) are housed in the bottom of rotary slide base (9).
CN 201020669730 2010-12-21 2010-12-21 High-precision numerical-control vertical lathe saddle driving device CN201881189U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201020669730 CN201881189U (en) 2010-12-21 2010-12-21 High-precision numerical-control vertical lathe saddle driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201020669730 CN201881189U (en) 2010-12-21 2010-12-21 High-precision numerical-control vertical lathe saddle driving device

Publications (1)

Publication Number Publication Date
CN201881189U true CN201881189U (en) 2011-06-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201020669730 CN201881189U (en) 2010-12-21 2010-12-21 High-precision numerical-control vertical lathe saddle driving device

Country Status (1)

Country Link
CN (1) CN201881189U (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102380789A (en) * 2011-11-16 2012-03-21 宁波明润瑞达机械科技有限公司 Screw feeding device
CN102528523A (en) * 2011-12-07 2012-07-04 齐重数控装备股份有限公司 High-speed tool post of vertical machining center
CN102873349A (en) * 2012-10-19 2013-01-16 无锡京华重工装备制造有限公司 Vertical lathe saddle rotary structure
CN102922359A (en) * 2012-11-07 2013-02-13 无锡京华重工装备制造有限公司 Feeding structure of numerical control cutter rest of vertical lathe
CN102921973A (en) * 2012-11-21 2013-02-13 无锡京华重工装备制造有限公司 Numerically controlled four-station knife rest structure of vertical lathe
CN102921972A (en) * 2012-11-08 2013-02-13 无锡京华重工装备制造有限公司 Knife rest structure of vertical lathe
CN103317377A (en) * 2013-05-31 2013-09-25 济南二机床集团有限公司 High-speed feeding transmission mechanism for ram type milling head for numerical control machine tool
CN103639817A (en) * 2013-11-19 2014-03-19 无锡京华重工装备制造有限公司 Ball screw positioning structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102380789A (en) * 2011-11-16 2012-03-21 宁波明润瑞达机械科技有限公司 Screw feeding device
CN102528523A (en) * 2011-12-07 2012-07-04 齐重数控装备股份有限公司 High-speed tool post of vertical machining center
CN102873349A (en) * 2012-10-19 2013-01-16 无锡京华重工装备制造有限公司 Vertical lathe saddle rotary structure
CN102922359A (en) * 2012-11-07 2013-02-13 无锡京华重工装备制造有限公司 Feeding structure of numerical control cutter rest of vertical lathe
CN102921972A (en) * 2012-11-08 2013-02-13 无锡京华重工装备制造有限公司 Knife rest structure of vertical lathe
CN102921973A (en) * 2012-11-21 2013-02-13 无锡京华重工装备制造有限公司 Numerically controlled four-station knife rest structure of vertical lathe
CN103317377A (en) * 2013-05-31 2013-09-25 济南二机床集团有限公司 High-speed feeding transmission mechanism for ram type milling head for numerical control machine tool
CN103639817A (en) * 2013-11-19 2014-03-19 无锡京华重工装备制造有限公司 Ball screw positioning structure

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Granted publication date: 20110629