CN201304430Y

CN201304430Y - Wedge type multi-point compensation mechanism

Info

Publication number: CN201304430Y
Application number: CNU2008201931621U
Authority: CN
Inventors: 卢善华; 李望安
Original assignee: HUANGSHI HUAQIANG NUMERICAL CONTROL MACHINE TOOL CO Ltd
Current assignee: HUANGSHI HUAQIANG NUMERICAL CONTROL MACHINE TOOL CO Ltd
Priority date: 2008-11-27
Filing date: 2008-11-27
Publication date: 2009-09-09
Anticipated expiration: 2018-11-27

Abstract

The utility model relates to a wedge type multi-point compensation mechanism used in metal forming machinery, comprising a pedestal and a cover board which are connected through a vertical guide sliding pin. The wedge type multi-point compensation mechanism is characterized in that a groove is arranged on the pedestal along the length direction; an upper carriage and a lower carriage are arranged in the groove and are separated by left and right clamping plates; a plurality of wedge mounting holes corresponding to each other are arranged on the two carriages; upper and lower raised wedges corresponding to each other are arranged in the wedge mounting holes; a bearing block is installed at one end of the pedestal, and a transmission shaft is installed in the bearing block; the outer end of the transmission shaft is connected with a driving device and the other end of the transmission device is provided with a threaded rod and is connected with a nut seat arranged on the upper carriage or the lower carriage. The wedge type multi-point compensation mechanism overcomes the problems of low raising precision of the workbench of the oil cylinder and high manufacturing cost. The wedge type multi-point compensation mechanism is applicable for flexibility compensation on the whole length of the workbench and a silder during the bending process of a large-tonnage bending forming machine.

Description

Wedge-type multiple spot compensation mechanism

(1) technical field:

The utility model mechanism relates to the metal forming machinery in the mechanical engineering, be that plate bending machine is used for compensating lathe slide block and workbench owing to the stressed deflection deformation that produces in bending plate process, guarantee the linearity and the angle of Forming Workpiece, make Forming Workpiece possess a kind of Wedge-type multiple spot compensation mechanism of higher precision.

(2) background technology:

At present, (upper dynamic) numerical control bender of Sheng Chaning all is to move up and down by the slide block that control is fixed on the oil cylinder in the world, produces relative displacement thereby order about mold that is installed on the slide block and the bed die that is installed on the workbench, realizes the bending to workpiece.Because numerical control bender mostly is free bending when work, the completed state that is workpiece is decided by the relative position between mold and the bed die fully, the error of relative distance will greatly influence the linearity and the angle of shaping workpiece, and plate bending machine is in the bending process, the deflection deformation that slide block and workbench can produce under stress, thereby influence is the relative distance of mould up and down, promptly causes shaping workpiece angle and linearity not to meet the production demand.There is dual mode to remedy the deflection deformation that bending process kind slide block and workbench produce now under stress.A kind of for fixedly adding the flange that adds of convex curve.Because it adds convex curve for fixing, is suitable for the plate bending under the same stress, if change different plates, amount of deflection remedies and is greatly affected, so the angle of shaping workpiece and linearity are very undesirable.Second kind adds protrudingly for three oil cylinder hydraulics of installing in the workbench, utilizes the different stroke of three oil cylinders to produce and adds salient point, forms to add convex curve; Its shortcoming is that to add salient point few, and it is not high to add protruding precision, and leakage of oil easily, and manufacturing cost is higher.

(3) summary of the invention:

The purpose of this utility model solves existing oil cylinder exactly, and to add protruding workbench flexibility compensating device machining accuracy low, can not form the desirable convex curve that adds, and the problem that manufacturing cost is high provides a kind of precision height, the Wedge-type multiple spot compensation mechanism of low cost of manufacture.

Concrete scheme of the present utility model is: Wedge-type multiple spot compensation mechanism, have base and cover plate, both adopt the vertically-guided sliding pin to connect, and it is characterized in that: have the groove of arranging along its length on base, upper and lower planker is housed in the groove, adopts left and right clamping plate between two plankers every putting; And on two plankers, have a plurality of installing holes of voussoir one to one, and the upper and lower one to one protruding voussoir that adds is housed; End at base is equipped with bearing block, and power transmission shaft is installed in the bearing block, and the outer end of power transmission shaft connects drive unit, and the other end of power transmission shaft is a screw rod, and is connected with last planker or the nut seat that is provided with on the planker down.

Adding its upper surface of protruding voussoir on described in the utility model is the plane, and the lower surface is the inclined-plane; And under to add its upper surface of protruding voussoir be the inclined-plane, the lower surface is the plane, the upper and lower two inclined-plane positioned opposite that add protruding voussoir.

Be contained in many in the upper and lower planker described in the utility model and add protruding voussoir upper and lower, add protruding voussoir with centre a pair of and add protruding value maximum (being the upper and lower angle of inclination maximum that adds protruding voussoir inclined-plane), both sides add adding of protruding voussoir protruding value and progressively reduce, and form the parabola shaped convex surface that adds.Be out of shape with the actural deflection that adapts to workbench, thereby obtain high-precision deflection compensation.

The utility model has the advantages that: 1. multiple spot adds protrudingly, to forming a desirable convex curve that adds that matches with actural deflection, can guarantee the machining accuracy of workpiece in platen length; 2. can adopt computer control system that drive unit is controlled, variation adds convex curve, and to satisfy different plates, difference is subjected to the deflection compensation under the force environment; 3. compact conformation, low cost of manufacture, mechanical type adds protruding, can not produce oil leakage phenomenon, environmental protection.

(4) description of drawings:

Fig. 1 is a main cutaway view of the present utility model;

Fig. 2 is vertical view of the present utility model (removes cover plate and last planker among the figure, goes up voussoir);

Fig. 3 is the A-A zoomed-in view of Fig. 1;

Fig. 4 is the vertical view of following planker;

Fig. 5 is a vertical view of going up planker;

Fig. 6 is the protruding schematic diagram that adds of the present utility model;

Among the figure: 1-cover plate, the last planker of 2-, 3-clamping plate, the last voussoir of 4-, 5-screw drive axle, 6-nut seat, 7-bearing block, 8-drive unit, 9-groove, 10-lower wedge block, planker under the 11-, 12-base, the 13-sliding pin that leads.

(5) specific embodiment:

Referring to Fig. 1,2,3, the utlity model has base 12 and cover plate 1, both adopt vertically-guided sliding pin 13 to connect, particularly: on base 12, have the groove of arranging along its length 9, upper and

lower planker

2,11 is housed in the groove 9, and (wherein going up planker 2 adopts shop bolt to be connected the location with cover plate 1, also can directly utilize its location, two ends), adopt left and right clamping plate every putting between two plankers; And on two plankers, have 17 voussoir installing holes (referring to Fig. 4,5) one to one, and be equipped with and upper and lowerly one to one add protruding voussoir 4,10 (upper surface that adds protruding voussoir 4 wherein is the plane, and the lower surface is the inclined-plane; And under to add protruding voussoir 10 its upper surfaces be the inclined-plane, the lower surface is the plane, the upper and lower two inclined-plane positioned opposite that add protruding voussoir 4,10), and its 9th pair upper and lower protruding value maximum of adding of protruding

voussoir

4 and 10 that adds, both sides add adding of protruding voussoir protruding value and progressively reduce, and form the parabola shaped convex surface that adds; End at base 12 is equipped with bearing block 7, screw drive axle 5 is installed in the bearing block 7, and the outer end of screw drive axle 5 connects drive unit, and the other end of screw drive axle 5 is a screw rod, and with following planker 2 (or go up planker 11) on nut seat 6 be set be connected, promptly constitute the utility model.

Operation principle of the present utility model is: control drive unit 8 and drive screw drive axle 5, driving down by nut seat 6 again, planker 11 moves horizontally all lower wedge blocks 10 simultaneously, the corresponding voussoir 4 (referring to Fig. 6) of going up of 10 whiles of each lower wedge block jack-up, add convex curve thereby form one with the workbench amount of deflection matches, to reach the purpose of total length deflection compensation.

Claims

1. Wedge-type multiple spot compensation mechanism has base and cover plate, and both adopt the vertically-guided sliding pin to connect, and it is characterized in that: have the groove of arranging along its length on base, upper and lower planker is housed in the groove, adopt left and right clamping plate every putting between two plankers; And on two plankers, have a plurality of installing holes of voussoir one to one, and the upper and lower one to one protruding voussoir that adds is housed; End at base is equipped with bearing block, and power transmission shaft is installed in the bearing block, and the outer end of power transmission shaft connects drive unit, and the other end of power transmission shaft is a screw rod, and is connected with last planker or the nut seat that is provided with on the planker down.

2. Wedge-type multiple spot compensation mechanism according to claim 1 is characterized in that: adding its upper surface of protruding voussoir on described is the plane, and the lower surface is the inclined-plane; And under to add its upper surface of protruding voussoir be the inclined-plane, the lower surface is the plane, the upper and lower two inclined-plane positioned opposite that add protruding voussoir.

3. Wedge-type multiple spot compensation mechanism according to claim 1, it is characterized in that: describedly be contained in many in the upper and lower planker and add protruding voussoir upper and lower, adding protruding voussoir with centre a pair of, to add protruding value maximum, and both sides add adding of protruding voussoir protruding value and progressively reduce, and form the parabola shaped convex surface that adds.