CN201313126Y

CN201313126Y - Deflection compensating device for workbench

Info

Publication number: CN201313126Y
Application number: CNU2008201921954U
Authority: CN
Inventors: 吴国云; 叶泽刚
Original assignee: Hubei Sanhuan Forging and Pressing Equipment Co Ltd
Current assignee: Hubei Sanhuan Forging and Pressing Equipment Co Ltd
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2009-09-23
Anticipated expiration: 2018-11-07

Abstract

The utility model relates to a deflection compensating device for a workbench that is used in metal forming machinery. The device is characterized in that two grooves arrayed in parallel are arranged along the length direction of the workbench, the two ends of the two grooves are communicated together, a pull rod is respectively arranged in the two grooves, a plurality of convexity adding wedges and head/tail joined convexity adding wedges are arranged on the two pull rods, the external ends of the head joined convexity adding wedges are drilled with screw holes for installing screws, and the external ends of the screws are connected with a driving device; arc washers are respectively arranged above each convexity adding wedge and each head/tail joined convexity adding wedge, and pin shafts are arranged at the two sides of the arc washers; U-shaped grooves in vertical direction are respectively arranged on the pin shafts of the arc washers corresponding to the two lateral walls of the workbench, and the pin shafts of each arc washer are arranged in the U-shaped grooves correspondingly. The utility model overcomes such defects as low convexity adding precision and high manufacturing cost in the prior cylinder workbench. Therefore, the device is suitable for defection compensation of the workbench in full length when a large-tonnage bending machine works.

Description

The flexibility compensating device of workbench

(1) technical field:

The utility model relates to the metal forming machinery in the mechanical engineering, is a kind of large-tonnage bending forming machine flexibility compensating device to the workbench of the accurate deflection compensation of acquisition on the workbench total length when bending that is used for.

(2) background technology:

The bending forming machine of domestic production at present has fluid pressure type lower table flexibility compensating device to the deflection compensation of workbench.Workbench is formed by three, and the intermediate portion is divided into main workbench, and two of front and back are used for the workbench deflection compensation, add protruding motion by the lower table oil cylinder, thereby finishes the compensation hydraulic action.Its weak point is: add protruding motion by the lower table oil cylinder and reach compensation hydraulic, be difficult to guarantee that each point adds protruding value, do not form the desirable convex curve that adds, thereby can not guarantee the machining accuracy of workpiece.Reach tens tons for its workbench weight of large-tonnage bending forming machine, if add protruding motion by the workbench oil cylinder, manufacturing cost is higher, and the oil cylinder that is installed in workbench is too many, and the strength and stiffness of workbench are had certain influence.

(3) summary of the invention:

The purpose of this utility model will solve existing oil cylinder exactly, and to add protruding workbench flexibility compensating device machining accuracy low, can not form the desirable convex curve that adds, the problem that manufacturing cost is high provides a kind of machining accuracy height, the flexibility compensating device of the workbench of low cost of manufacture.

Concrete scheme of the present utility model is characterized in that: have the groove that twice are arranged in juxtaposition on workbench along its length, the both ends of twice groove are communicated with, one pull bar respectively is housed in the twice groove, respectively be equipped with some on two pull bars and add protruding voussoir, and be equipped with respectively in the end of two pull bars that the tail end disjunctor adds protruding voussoir and the head end disjunctor adds protruding voussoir, the outer end that the head end disjunctor adds protruding voussoir is drilled with screw installation screw rod, and the screw rod outer end connects drive unit; Described each add protruding voussoir and head, tail end disjunctor add protruding voussoir above the circular arc cushion block respectively is housed, circular arc cushion block both sides designs has bearing pin; The bearing pin of all circular arc cushion blocks all has the U-lag of vertical direction relatively in the groove two side of workbench, and the bearing pin correspondence of each circular arc cushion block is contained in the U-lag.

Be contained in described in the utility model and add protruding voussoir on the pull bar, with middle two to add protruding height the highest, both sides add adding of protruding voussoir protruding height 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. its bending power of large-tonnage bending forming machine is bigger, can add protruding voussoir length by increase and reduce groove and circular arc cushion block contact stress down, thereby guarantee the precision of deflection compensation effectively; 3. can adopt computer CNC control system that drive unit is controlled, realize the high accuracy deflection compensation; 4. compact conformation, low cost of manufacture.

(4) description of drawings:

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

Fig. 2 is a vertical view of the present utility model;

Fig. 3 is the I place zoomed-in view among Fig. 2;

Fig. 4 is the A-A zoomed-in view of Fig. 3;

Fig. 5 is the front view that adds protruding voussoir;

Fig. 6 is the vertical view that adds protruding voussoir;

Fig. 7 is the front view of circular arc cushion block;

Fig. 8 is the vertical view of circular arc cushion block;

Fig. 9 is the front view that the head end disjunctor adds protruding voussoir;

Figure 10 is the vertical view that the head end disjunctor adds protruding voussoir;

Figure 11 is the front view that the tail end disjunctor adds protruding voussoir;

Figure 12 is the vertical view that the tail end disjunctor adds protruding voussoir.

Among the figure: the 1-workbench, 2-circular arc cushion block, 3-adds protruding voussoir, the 4-groove, the 5-pull bar, the 6-drive unit, the 7-screw rod, the 8-head end adds protruding voussoir, and the 9-tail end adds protruding voussoir, 10-U shape groove, 11-bearing pin.

(5) specific embodiment:

Referring to Fig. 1,2,3,4, the utlity model has rectangular table 1, on workbench 1, have the groove 4 that twice are arranged in juxtaposition along its length, the both ends of twice groove 4 are communicated with; One pull bar 5 (employing screw mandrel) respectively is housed in twice groove 4, respectively being equipped with 33 on two pull bars 5 adds protruding voussoir 3 (its structure is referring to Fig. 5,6, its upper surface is the inclined-plane, and the middle part is shaped on through hole and is connected with pull bar 5), add in twos and adopt sleeve pipe to keep at a certain distance away between the protruding voussoir.And on every pull bar, add protruding voussoir 3, with middle two to add protruding height the highest, both sides add adding of protruding voussoir protruding amount and progressively reduce, and form the parabola shaped convex surface that adds.And be equipped with respectively in the end of two pull bars 5 that the tail end disjunctor adds protruding voussoir 9 (its structure has two screwed holes to be connected with pull bar 5 referring to Figure 10,11 on it) and the head end disjunctor adds protruding voussoir 7 (its structure is referring to Fig. 9,10).This head end disjunctor adds protruding voussoir 8 its upper surfaces and is shaped on two and adds protruding wedge surface, and the outer end is drilled with screw screw rod 7 is installed, and screw rod 7 outer ends connect drive unit 6 (being made up of motor and decelerator).And described each add protruding voussoir 3 and tail end disjunctor add protruding voussoir 9 above a circular arc cushion block 2 respectively is housed, correspondence is equipped with two circular arc cushion blocks 2 on the protruding voussoir 8 and add at the head end disjunctor, the structure of this circular arc cushion block 2 is referring to Fig. 7,8, its upper surface is circular-arc, bearing pin 11 (wherein be contained in the circular arc cushion block 2 of holding disjunctor to add on the protruding voussoir end to end and will grow in the longitudinal direction than other circular arc cushion block 2, with across the twice groove) is equipped with in its both sides; And in the groove two side of workbench 1 relatively the bearing pin 11 of all circular arc cushion blocks all have the U-lag 10 of vertical direction, bearing pin 11 correspondences of each circular arc cushion block are contained in the U-lag 10.Promptly constitute the utility model.

Operation principle of the present utility model is: control drive unit 6 and drive screw rod 7 rotations, 7 of screw rods promote the head end disjunctor and add protruding voussoir 8, driving pull bar 5 again makes all add protruding voussoir 3 to do moving of horizontal direction simultaneously, respectively add the corresponding circular arc cushion block 2 of 3 jack-up of protruding voussoir, add convex curve thereby form one with the workbench amount of deflection matches, to reach the purpose of total length deflection compensation.

Claims

1. the flexibility compensating device of workbench, has workbench, it is characterized in that: on workbench, have the groove that twice are arranged in juxtaposition along its length, the both ends of twice groove are communicated with, one pull bar respectively is housed in the twice groove, respectively is equipped with some on two pull bars and adds protruding voussoir, and be equipped with respectively in the end of two pull bars that the tail end disjunctor adds protruding voussoir and the head end disjunctor adds protruding voussoir, the outer end that the head end disjunctor adds protruding voussoir is drilled with screw installation screw rod, and the screw rod outer end connects drive unit; Described each add protruding voussoir and head, tail end disjunctor add protruding voussoir above the circular arc cushion block respectively is housed, circular arc cushion block both sides designs has bearing pin; The bearing pin of all circular arc cushion blocks all has the U-lag of vertical direction relatively in the groove two side of workbench, and the bearing pin correspondence of each circular arc cushion block is contained in the U-lag.

2. the flexibility compensating device of workbench according to claim 1, it is characterized in that: described being contained in adds protruding voussoir on the pull bar, with middle two to add protruding height the highest, both sides add adding of protruding voussoir protruding height and progressively reduce, and form the parabola shaped convex surface that adds.