CN112276053B

CN112276053B - 3D rapid positioning tool for casting head cutting and operation method thereof

Info

Publication number: CN112276053B
Application number: CN202011126107.2A
Authority: CN
Inventors: 刘海波; 戴万祥; 何涛; 贾华; 曹小杰
Original assignee: Wuzhong Instrument Co Ltd
Current assignee: Wuzhong Instrument Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2022-02-11
Anticipated expiration: 2040-10-20
Also published as: CN112276053A

Abstract

The invention relates to a 3D quick positioning tool for casting head cutting of a casting, which comprises a cross beam; the connecting arm is vertically connected with the cross beam; the positive sucker is connected with one end of the connecting arm; the reverse sucker is suitable for being attracted with the positive sucker, and a plurality of first positioning points are arranged on the reverse sucker; the surface of the valve body is provided with a plurality of second positioning points; the three-dimensional camera is suitable for capturing the first positioning point and the second positioning point and fixing the relative positions of the anti-suction disc and the valve body; the reinforcing bar is suitable for connecting the counter sucking disc and the valve body; the storage of the positions of the positioning points on different valve bodies is realized by means of a three-dimensional camera, so that the valve bodies and the anti-suction cups are connected through reinforcing steel bars; after the valve body is accurately positioned and hoisted, the casting head is cut.

Description

3D rapid positioning tool for casting head cutting and operation method thereof

Technical Field

The invention relates to a valve body positioning and cutting device, in particular to a 3D rapid positioning tool for cutting a casting head of a casting.

Background

Valve body castings cast by companies need to cut a casting head, but a lot of pollution is caused in the cutting process, including dust pollution, metal dust pollution and cutting smoke; these pollutions have a lot of influence on the environment, especially for workers in the production line, and the automatic cutting mode is gradually replacing the manual operation at present, but the automatic cutting needs to accurately identify the workpiece. The valve body produced by casting usually affects the identification thereof because its shape is very complicated and the outer dimensions of the valve body before machining cannot be fully guaranteed. If the shape and the position of the casting cannot be accurately judged, the cut workpiece cannot be accurately positioned, and the cutting precision cannot be ensured under the condition that the positioning accuracy cannot be ensured; accurate positioning of the mass castings is very important; how to accurately position the cast valve body also becomes a key factor for cutting the automatic casting head of the cast valve body.

After the valve body is accurately positioned, the valve body can be fixed on a tool, and the manufacturing tool is very troublesome due to the fact that the valves produced by companies are very various in types, so that the valve body and the positioning tool are welded together by using a steel bar in a generally simple method to complete the task of integral clamping; it should be noted that because the valve body is heavy, the cutting usually adopts a hoisting mode, once the valve body is cut, all cut risers, gates and other bypasses fall off, and the rest part hung on the cantilever beam is the valve body which is primarily cut, and the method has the advantages that the cut materials can automatically fall off, the rest cut parts cannot be interfered, and meanwhile, the materials can fall on the lower impact-resistant plate chain transmission belt, so that the cleanness of a workshop is ensured;

because the valve body is particularly heavy, how to realize the positioning and hoisting of the valve body becomes a problem which needs to be solved urgently by researchers of the company.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: positioning and hoisting of the valve body are realized;

in order to solve the technical problems, the invention adopts the following technical scheme:

the invention relates to a 3D quick positioning tool for casting head cutting, which comprises a cross beam; the connecting arm is vertically connected with the cross beam; the positive sucker is connected with one end of the connecting arm; the reverse sucker is suitable for being attracted with the positive sucker, and a plurality of first positioning points are arranged on the reverse sucker; the surface of the valve body is provided with a plurality of second positioning points; the three-dimensional camera is suitable for capturing the first positioning point and the second positioning point and fixing the relative positions of the anti-suction disc and the valve body; the reinforcing bar is suitable for connecting the counter sucking disc and the valve body;

the positions of the cross beam, the connecting arm and the positive sucker are relatively fixed, and the positive sucker and the negative sucker are accurately positioned through the matching of the lug and the notch; the reverse sucker is provided with a plurality of first positioning points and the valve body is provided with a plurality of second positioning points so as to capture more coordinates for the three-dimensional camera in the positioning process of the valve body and the reverse sucker, thereby not only preventing the positions of the valve body and the reverse sucker from being wrong in the positioning process, but also realizing that different valve bodies have a plurality of different positioning coordinate data; the three-dimensional camera can store positioning data of various valves, and the same type of valve positioning can be repeated; the anti-suction disc is provided with a plurality of positioning points, a plurality of positioning points can be prefabricated on the valve body, the positioning points of the valve body of the same type are relatively fixed, and once the positioning points are set for the first time, all the positioning points can be recorded by a camera and can be stored in a computer to be used as the basis for repeated positioning; the anti-suction cup is light in weight, can be quickly positioned by means of a three-dimensional camera and can be quickly positioned by hand; it is worth noting that: 1. the valve body and the suckback disc are relatively fixed, and particularly, when the suckback disc is hung, the gravity center of the valve body passes through the center of the suckback disc as much as possible; 2. the casting profile of the cast valve body is influenced by the casting process, and the profile is irregular, so that the reference positioning mode is less, and the repeated precision can be better ensured by using individual points with easily ensured precision as the salient point positioning.

The operation method of the invention is as follows:

s1: capturing a second positioning point on the valve body through the three-dimensional camera;

s2: the reverse sucker is held by a hand, and the relative position of the second positioning point and the first positioning point is adjusted;

s3: after the positioning is finished, connecting the valve body and the counter sucking disc by using a steel bar;

s4: and (5) attracting the positive sucker and the negative sucker to complete the hoisting and positioning of the valve body.

The invention has the beneficial effects that: the invention relates to a 3D quick positioning tool for cutting casting heads of castings, which realizes the storage of the positions of positioning points on different valve bodies by means of a three-dimensional camera, thereby realizing the connection of the valve bodies and a reverse sucker through reinforcing steel bars; after the valve body is accurately positioned and hoisted, the casting head is cut.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a beam, a connecting arm, a positive sucker and a negative sucker of the present invention;

FIG. 2 is a schematic structural diagram of a three-dimensional camera, a suction cup and a valve body according to the present invention;

in the figure: the positioning method comprises the following steps of 1-beam, 2-connecting arm, 3-reverse sucker, 4-positive sucker, 5-first positioning point, 6-second positioning point, 7-three-dimensional camera, 8-valve body, 11-second positioning point, 12-second positioning point, 13-second positioning point, 14-reinforcing bar, 20-power line and 21-control button.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1-2, firstly, the valve body is accurately positioned; the valve body 8 is difficult to operate because of its complex shape, heavy weight, and some of them are tens of kilograms or even hundreds of kilograms. The connector is added in the middle, the connector is divided into an upper sucker and a lower sucker which are in positive and negative butt joint (a positive sucker 4 and a negative sucker 3), the positive sucker 4 and the negative sucker 3 are respectively only a few kilograms, two

first positioning points

5 and 6 are arranged on the negative sucker, and patch type positioning points are adopted; three second positioning points are reserved on the surface of the valve body 8, and the three second positioning points (11, 12 and 13) have several characteristics and can be preset with three small salient points during casting; the three salient points are all positioned on the surface of the valve body 8 and are also positioned in an area which is easier to ensure the casting size, so that the position of each cast valve body 8 can be ensured to be completely determined through the three salient points; three patches are attached to the salient points, an ideal suspension point of the valve body 8 is selected, the center of the point is basically overlapped with the gravity center of the valve body 8, the position of the suckback disc 3 is fixed, then 5 points of two objects can be fixed in a mode of rapid imaging through the three-dimensional camera 7, at the moment, the relative position of the valve body 8 and the suckback disc 3 is fixed, then the suckback disc 3 and the valve body 8 are welded together rapidly through the reinforcing

steel bar

14, 3 or more reinforcing steel bars 14 can be used, and the valve body 8 and the suckback disc 3 are integrated as long as the fixing requirements are met. 5 points (a first positioning point and a second positioning point) positioned by each type of valve body 8 can be stored in a computer, so that when the valve is used next time, only the anti-suction cup 3 (with the weight of several kilograms) is held by a hand to coincide two points on the anti-suction cup 3 according to the positioning position in software, the position of the anti-suction cup 3 is guided by three points on the valve body 8 by the aid of the three-dimensional camera 7, once the two points on the suction cup coincide, the position of the anti-suction cup 3 is fixed, and the anti-suction cup can be welded and fixed at the moment, so that the requirement of quick positioning is met, and after each cutting is finished, the reinforcing steel bar 14 between the valve body 8 and the anti-suction cup 3 is cut off to prepare for the next installation;

then, the valve body 8 and the suckback disc 3 can be hoisted, and the suckback disc 3 and the positive sucker 4 are in one-to-one correspondence through the middle notches; the counter chuck 3 and the positive chuck 4 use high performance magnets, which are very light in weight and strong in magnetism, and the magnetic force is about 300 kg or more. Thus, the valve body 8 can be firmly fixed together and the relative position is fixed through the positive sucker 4 and the negative sucker 3.

Meanwhile, the three parts of the positive sucker 4, the connecting arm 2 and the cross beam 1 are fixed together according to the mode of figure 1, so once the two parts of the reverse sucker 3 and the positive sucker 4 are attracted together through magnetism, the whole valve body 8 is completely fixed on the cantilever beam. This completes the accurate positioning of the valve body 8, which is done under the guidance of the stored data of the three-dimensional camera 7, each valve having a fixed positioning position.

The power line 20 and the control button 21 are arranged on the positive sucker, and when the power is switched on, the positive sucker 4 and the negative sucker 3 are in magnetic connection in a one-to-one correspondence manner; the requirement of accurate positioning is realized. When the valve is cut off, the anti-suction disc 3 can be freely separated, and only a few kilograms of anti-suction discs are arranged between the valve body 8, so that the valve is convenient to position and mount, and the final requirement of quick positioning is met.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a foundry goods dead head cutting 3D fixes a position frock fast which characterized in that: comprises that

A cross beam;

a connecting arm vertically connected to the cross beam;

the positive sucker is connected with one end of the connecting arm;

the reverse sucker is suitable for being attracted with the positive sucker, and a plurality of first positioning points are arranged on the reverse sucker;

the surface of the valve body is provided with a plurality of second positioning points;

the three-dimensional camera is suitable for capturing the first positioning point and the second positioning point and fixing the relative positions of the counter sucking disc and the valve body;

and the reinforcing bar is suitable for connecting the counter sucking disc and the valve body.

2. The operation method of the casting head cutting 3D quick positioning tool according to claim 1 is characterized in that: comprises the following steps:

s1: capturing the second positioning point on the valve body through the three-dimensional camera;

s2: the reverse sucker is held by hand, and the relative position of the second positioning point and the first positioning point is adjusted;

s3: after the positioning is finished, the reinforcing steel bar is adopted to connect the valve body and the counter suction cup;

s4: and (4) attracting the positive sucker and the negative sucker to complete the hoisting and positioning of the valve body.