CN201535668U

CN201535668U - Device for measuring nonstraightness of core rod

Info

Publication number: CN201535668U
Application number: CN2009200778830U
Authority: CN
Inventors: 周春立; 周春节; 顾启明
Original assignee: SHANGHAI BAOYE ELECTROMECHANICAL TECHNOLOGY Co Ltd
Current assignee: SHANGHAI BAOYE ELECTROMECHANICAL TECHNOLOGY Co Ltd
Priority date: 2009-07-06
Filing date: 2009-07-06
Publication date: 2010-07-28
Anticipated expiration: 2019-07-06

Abstract

The utility model provides a device for measuring nonstraightness of a core rod, which is characterized by comprising a trolley frame, wherein both sides of the bottom of the trolley frame are provided with trolley end frames; the trolley end frames can be arranged on a bolster in a mode of moving forward and backward; the core rod is arranged below the trolley frame by a bearing; and the direction of the trolley frame relative to the cross section of the core rod is provided with at least two laser ranging sensors. The utility model has the advantages that the device which can be used for measuring nonstraightness of large workpieces is provided; the application of the device can establish an accurate and three-dimensional model of bending situation of the core rod; and the device can work out the correct and reasonable straightening step by the model, can reasonably select a fulcrum and a pressing point according to parameters of the model, makes pressing quantity parameterized by measuring and calculating elasticity modulus and greatly improves straightening efficiency and straightening quality.

Description

A kind of plug non-straightness measurement device

Technical field

The utility model relates to a kind of plug non-straightness measurement device, is used for the nonstraightness of plug and model is offered hydraulic straightening machine, belongs to plug non-straightness measurement device technique field.

Background technology

Iron and steel enterprise produces the high-alloy steel plug that seamless large-diameter pipes need long 19m diameter 120～500mm.The manufacture craft more complicated of plug, after thermal treatment, need again plug to be sent to turning machine-shaping through aligning operation together, so-called aligning operation adopts the point type gag straightener with curvulate plug aligning in the heat treatment process exactly, can not stay casting skin during with road plug turning after an action of the bowels, all cars go out.The operation of plug aligning is also very simple, finds bending point the highest in the plug earlier, and this point is delivered under the hammer, starts straightener, hammer with certain pressure with this leveling.Seek new bending point again, so repeat several times, just can align plug.

At present, seek the work of bending point all by manually finishing.The workman adopts range estimation usually, or add an auxiliary wire rope and seek peak, the way that adopts machinery is also arranged, promptly a bit with mechanical fixation, allow this point move around along plug, look for maximum offset point, these methods not only efficient are low, and the error of seeking is also bigger, increases workload can for the aligning of postorder.Because straightener and plug all are huge monsters, plug will being moved once or start, straightener is not a nothing the matter, each action all needs accurate plan and calculates, and therefore adopts artificial method to measure the nonstraightness of plug, obviously can not satisfy the demand.

Summary of the invention

The purpose of this utility model provides a kind of device that can be used in the non-straightness measurement of big workpiece.

In order to achieve the above object, the technical solution of the utility model has provided a kind of plug non-straightness measurement device, it is characterized in that, comprise car rack, two bottom sides at car rack is provided with dolly end frame, dolly end frame can be located on the bolster movably forward and backward, and plug is located at the below of car rack by bearing, is provided with at least two laser range sensors on the cross-sectional direction of car rack with respect to plug.

The utility model as long as can record the air coordinates of mandrel surface three points on same xsect, just can be obtained the centre point of this xsect according to the principle of " three-point circle " geometrically at an easy rate.If length direction along plug, get a cross section every 1mm, try to achieve a centre point, then 1 meter long plug just has 1000 centre points, these points are linked up, this space curve has just been represented the physical location of the center of circle line of this 1 meter plug in the space, finds out the deviation between this curve and the theoretical centerline, just can find the bending point of plug maximum.The cross section number of getting in the longitudinal direction can depend on the needs, generally also needn't be too close, get final product to satisfy the demand.

The utility model has the advantages that: a kind of device that can be used in the non-straightness measurement of big workpiece is provided, the use of this device can set up that the crooked situation of plug is accurate, the model of three-dimensional, with this model can make correctly, rational alignment procedure, can select fulcrum and depress a little according to the Rational Parameters of model, measurement by elastic modulus is calculated, make drafts become parametrization, greatly improve the efficient and the alignment quality of alignment.

Description of drawings

The front elevation of a kind of plug non-straightness measurement device that Fig. 1 provides for the utility model;

The vertical view of a kind of plug non-straightness measurement device that Fig. 2 provides for the utility model;

The front elevation when pressing down of a kind of plug non-straightness measurement device that Fig. 3 provides for the utility model.

Embodiment

Specify the utility model below in conjunction with embodiment.

Embodiment

As shown in Figure 1 to Figure 3, a kind of plug non-straightness measurement device that provides for the utility model, comprise car rack 2, two bottom sides at car rack 2 is provided with dolly end frame 7, be provided with in the inboard of car rack 2 can be elastic extension arm 14, be provided with in the end of extension arm 14 and press down laser range finder 13, top and side at bolster 5 are respectively equipped with slide rail 15 and tooth bar 4, dolly end frame 7 is located on the slide rail 15 by slide 6, side at dolly end frame 7 is provided with servomotor 3, servomotor 3 connects mutually with speed reduction unit, wheel and rack 4 on the reducer output shaft is meshed, plug 12 is located at the below of car rack 2 by bearing 8, is provided with three laser range sensors 1 by clamper at car rack 2 on respect to the cross-sectional direction of plug 12, is provided with axial-adjustment unit 11 on clamper, clamper comprises rotation axis 9, laser range sensor 1 is located at the end of rotation axis 9, and rotation axis 9 is located in the bearing 10 by the screw of afterbody, and bearing 10 is located on the car rack 2.Press down laser range finder 13 and laser range sensor 1 external computing machine, computing machine connects the hydraulic straightening machine controller.

The course of work of the present utility model is:

Before step 1, the work beginning three laser range finders 1 are adjusted in the plane, concrete adjustment process is: unclamp the screw on the rotation axis 9 earlier, rotation axis 9 just rotates in bearing 10, and the laser beam that laser range finder 1 penetrates just marks a horizontal line on plug 12.We are standardized horizontal line with the same thick line of laser beam on plug 12 earlier.Laser range finder 1 rotates the horizontal line coincidence therewith of formed horizontal line.Just adjust axial-adjustment unit 11 if any error.

Step 2, the dolly of being made up of car rack 2 and dolly end frame 7 reached an end of plug 12.Three laser range finders 1 are aimed at the initiating terminal of plugs 12, open laser range finder 1, and the data on the computer screen begin to beat, and illustrate that laser range finder 1 started working.Select dolly whenever to advance 5mm with regard to measurement once, three laser range finders 1 record three distances, and computing machine writes down three data, convert with laser range finder 1 place great circle.The round garden heart position data in plug 12 cross sections has just stored up computing machine, and advancing of computer control dolly is synchronous with the measurement maintenance of laser range finder 1.

Step 3, surveyed full journey after, whole plug 12 is all noted every the central coordinate of circle data of the cross section of 5mm circle, Computer Processing is fallen some flex points, and fairing once, the curve that the plug 12 garden hearts are linked to be just shows, the data hydraulic straightening machine controller of making a gift to someone, straightener just carries out alignment by these data.Software is selected maximum crooked first alignment, suppose that plug has the bending of a maximum protuberance 30mm to 8.5m from starting point 1.2m, this bending becomes 35 ° of angles with vertical plane, straightener rotates plug 35 degree and a work mounting s is placed on the 1.2m place, another work mounting s is placed on the 8.5m place, hammer reaches (1.2+8.5)/2m place, begins to press down (above for straightener action and the utility model irrelevant).This moment, extension arm 14 stretched out, and was used in to measure the laser range finder 13 that presses down entangle curved degree and aim at fluid heads and depress a little bottom, pressed down laser range finder 13 measurements and depressed overall process, and data recording is got off.Be depressed into 0 from+30 as can be seen from data, can spring back to again+X, if from+30 being depressed into-Y then can spring back to 0.

After step 4, the alignment several times, can remeasure again once, new model is carried out alignment again till satisfaction.

Claims

1. plug non-straightness measurement device, it is characterized in that, comprise car rack (2), two bottom sides at car rack (2) is provided with dolly end frame (7), dolly end frame (7) can be located on the bolster (5) movably forward and backward, plug (12) is located at the below of car rack (2) by bearing (8), is provided with at least two laser range sensors (1) on the cross-sectional direction of car rack (2) with respect to plug (12).

2. a kind of plug non-straightness measurement device as claimed in claim 1 is characterized in that be provided with slide rail (15) at the top of described bolster (5), described dolly end frame (7) is located on the slide rail (15) by slide (6).

3. a kind of plug non-straightness measurement device as claimed in claim 1 or 2, it is characterized in that, side at described bolster (5) and described dolly end frame (7) is respectively equipped with tooth bar (4) and servomotor (3), be linked with speed reduction unit on described servomotor (3), the gear on the reducer output shaft is meshed with described tooth bar (4).

4. a kind of plug non-straightness measurement device as claimed in claim 1 is characterized in that described laser range sensor (1) is located on the described car rack (2) by clamper, is provided with axial-adjustment unit (11) on clamper.

5. a kind of plug non-straightness measurement device as claimed in claim 4, it is characterized in that, described clamper comprises rotation axis (9), described laser range sensor (1) is located at the end of rotation axis (9), rotation axis (9) is located in the bearing (10) by the screw of afterbody, and bearing (10) is located on the described car rack (2).

6. a kind of plug non-straightness measurement device as claimed in claim 1 is characterized in that, be provided with in the inboard of described car rack (2) can be elastic extension arm (14), be provided with in the end of extension arm (14) and press down laser range finder (13).

7. a kind of plug non-straightness measurement device as claimed in claim 6 is characterized in that, described laser range finder (13) and the external computing machine of described laser range sensor (1) of pressing down.