阅读说明：本技术 闭合定位链的零件定位方法 (Part positioning method of closed positioning chain ) 是由 江涛 谭秀阳 张峰 林华 朱成云 陈晶晶 黄建 于 2020-05-26 设计创作，主要内容包括：本发明属于造车设备技术领域,具体涉及一种零件定位方法。闭合定位链的零件定位方法,采用闭合定位链对多个零件进行定位,包括如下步骤：将固定支架固定在地面上,将主工装安装在固定支架上,在主工装上定位第一零件；在固定支架上定位线旁工装,在线旁工装上定位抓手,在抓手上定位第二零件。本发明采用闭合定位链的方法,将两个或两个以上没有精准配合和固定连接的零件进行定位匹配,使之产品达到使用要求。本发明提高了工作效率,节省了空间,提高了产品的精度,降低了生产成本,非常适合无固定连接的零件之间的定位。(The invention belongs to the technical field of vehicle manufacturing equipment, and particularly relates to a part positioning method. The part positioning method of the closed positioning chain adopts the closed positioning chain to position a plurality of parts, and comprises the following steps: fixing a fixed support on the ground, installing a main tool on the fixed support, and positioning a first part on the main tool; and positioning a tool beside the line on the fixed support, positioning a gripper on the tool beside the line, and positioning a second part on the gripper. The invention adopts a method of closing the positioning chain to position and match two or more parts which are not accurately matched and fixedly connected, so that the product meets the use requirement. The invention improves the working efficiency, saves the space, improves the product precision, reduces the production cost and is very suitable for positioning parts without fixed connection.)

1. The part positioning method of the closed positioning chain is characterized in that the closed positioning chain is adopted to position a plurality of parts, and the method comprises the following steps:

fixing a fixed support on the ground, installing a main tool on the fixed support, and positioning a first part on the main tool;

and positioning a line-side tool on the fixed support, positioning a gripper on the line-side tool, and positioning a second part on the gripper.

2. The part positioning method of the closed positioning chain according to claim 1, wherein the main tool and the line-side tool are positioned on the same fixing support by positioning pins.

3. The closed positioning chain of claim 1, wherein when the main fixture is positioned on the fixing support, at least two positioning pins are required for positioning the main fixture, and the distance error between two adjacent positioning pins is not more than 0.05 mm.

4. The part positioning method of the closed positioning chain according to claim 1, wherein when the tool beside the line is positioned on the fixing support, at least two positioning pins are required for positioning the tool beside the line, and a distance error between two adjacent positioning pins is not greater than 0.05 mm.

5. The closed positioning chain of claim 1, wherein a minimum of two positioning pins are required to position the gripper when the gripper is positioned on the off-line tooling, and the distance error between two adjacent positioning pins is no greater than 0.05 mm.

6. The method of claim 1, wherein a minimum of two locating pins are required to locate the first part when the first part is located on the master tool, and the distance error between two adjacent locating pins is no greater than 0.05 mm.

7. The closed positioning chain of claim 1, wherein a minimum of two positioning pins are required to position the second part when the second part is positioned on the gripper, and the distance between two adjacent positioning pins has a tolerance of no more than 0.05 mm.

8. The part placement method of a closed placement chain of claim 1, wherein said first part and said second part are devoid of precision fit and secure connection.

9. The part positioning method of a closed positioning chain according to any one of claims 1 to 8, wherein the closed positioning chain comprises a fixed support, a main tool for positioning a first part is arranged on the fixed support, a line side tool is further arranged on the fixed support, and the line side tool clamps and positions a hand grip for positioning a second part.

10. The part positioning method of the closed positioning chain as claimed in claim 9, wherein the main tool is fixed on the fixing bracket by a positioning pin, and the line side tool is fixed on the fixing bracket by a positioning pin;

preferably, the main tool is fixed on the fixing support by adopting at least two positioning pins; the distance error between two adjacent positioning pins is not more than 0.05 mm;

preferably, the line side tool is fixed on the fixing support by adopting at least two positioning pins; the distance error between two adjacent positioning pins is not more than 0.05 mm;

preferably, the hand grip is fixed on the tool beside the wire by adopting at least two positioning pins; the distance error between two adjacent positioning pins is not more than 0.05 mm;

more preferably, the first part is fixed on the main tool by using at least two positioning pins; the distance error between two adjacent positioning pins is not more than 0.05 mm;

more preferably, the second part is fixed on the hand grip by at least two telescopic pins; the distance error between two adjacent telescopic pins is not more than 0.05 mm.

Technical Field

The invention belongs to the technical field of vehicle manufacturing equipment, and particularly relates to a method for positioning a plurality of parts.

Background

In a modern automatic vehicle manufacturing process, a single tool clamp is generally adopted to position and clamp parts in order to realize the positioning and welding functions of two or more parts without precise matching and fixed connection.

At present, the commonly used method is as follows: and (4) manually or by a robot, conveying the part to a tool clamp, clamping and positioning the part by the tool clamp, welding the part, and conveying the part to the next station by the robot after welding.

The method has the advantages of low efficiency, large occupied space during processing and high use cost.

Disclosure of Invention

The invention aims to solve the technical problems of low efficiency, large processing occupied space and high cost when two or more than two parts without precise matching and fixed connection are subjected to positioning welding, and aims to provide a part positioning method of a closed positioning chain.

The part positioning method of the closed positioning chain adopts the closed positioning chain to position a plurality of parts, and comprises the following steps:

fixing a fixed support on the ground, installing a main tool on the fixed support, and positioning a first part on the main tool;

and positioning a line-side tool on the fixed support, positioning a gripper on the line-side tool, and positioning a second part on the gripper.

Preferably, on the same fixed support, positioning pins are adopted to respectively position the main tool and the line side tool.

Preferably, when the main tool is positioned on the fixing support, at least two positioning pins are needed for positioning the main tool, and the distance error between every two adjacent positioning pins is not more than 0.05 mm.

Preferably, when the line side tool is positioned on the fixing support, at least two positioning pins are needed for positioning the line side tool, and the distance error between every two adjacent positioning pins is not more than 0.05 mm.

Preferably, when the hand grip is positioned on the tool beside the line, at least two positioning pins are needed for positioning the hand grip, and the distance error between every two adjacent positioning pins is not more than 0.05 mm.

More preferably, when the first part is positioned on the main tool, at least two positioning pins are needed for positioning the first part, and the distance error between two adjacent positioning pins is not more than 0.05 mm.

More preferably, when the second part is positioned on the hand grip, at least two positioning pins are needed for positioning the second part, and the distance error between two adjacent positioning pins is not more than 0.05 mm.

More preferably, the first part and the second part are not precisely fitted and fixedly connected.

The closed positioning chain comprises a fixed support, a main tool used for positioning the first part is arranged on the fixed support, a line side tool is further arranged on the fixed support, and the line side tool clamps and positions the hand grip used for positioning the second part.

Preferably, the main tool is fixed on the fixing support through a positioning pin, and the line side tool is fixed on the fixing support through a positioning pin.

Preferably, the main tool is fixed on the fixing support by adopting at least two positioning pins. The distance error between two adjacent locating pins is not more than 0.05 mm.

Preferably, the line side tool is fixed on the fixing support by adopting at least two positioning pins. The distance error between two adjacent locating pins is not more than 0.05 mm.

Preferably, the hand grip is fixed on the tool beside the wire by adopting at least two positioning pins. The distance error between two adjacent locating pins is not more than 0.05 mm.

More preferably, the first part is secured to the main fixture using at least two locating pins. The distance error between two adjacent locating pins is not more than 0.05 mm.

More preferably, the second part is secured to the grip using at least two telescopic pins. The distance error between two adjacent telescopic pins is not more than 0.05 mm.

The positive progress effects of the invention are as follows: the invention adopts a method of closing the positioning chain to position and match two or more parts which are not accurately matched and fixedly connected, so that the product meets the use requirement. The invention improves the working efficiency, saves the space, improves the product precision, reduces the production cost and is very suitable for positioning parts without fixed connection.

Drawings

FIG. 1 is a schematic view of an overall structure of a closed positioning chain according to the present invention;

FIG. 2 is an enlarged schematic view of a portion of the closed positioning chain of the present invention;

FIG. 3 is a flow chart of a method of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific drawings.

The part positioning method of the closed positioning chain is characterized in that the closed positioning chain is adopted to position a plurality of parts, and the parts are not accurately matched and fixedly connected.

Referring to fig. 1 and 2, the closed positioning chain comprises a fixed support 1, a main tool 2 for positioning a first part is arranged on the fixed support 1, a line side tool 3 is further arranged on the fixed support 1, and the line side tool 3 clamps and positions a hand grip 4 for positioning a second part. The positions of the main tool 2 and the line side tool 3 can be determined according to the specifications of the first part and the second part. If the specifications of the first part and the second part are not changed, after the welding position relationship of the first part and the second part is determined for the first time, the position relationship of the main tool 2 and the line side tool 3 does not need to be changed, and the subsequent parts are continuously positioned and welded, so that the clamping and positioning operation of the invention is simple and convenient, and the working efficiency is greatly improved.

The main tool 2 is fixed on the fixing support 1 by positioning pins, and preferably, the main tool 2 is fixed on the fixing support 1 by at least two positioning pins. The distance error between two adjacent positioning pins is not more than 0.05 mm. First part adopts two at least locating pins to fix on main frock 2, and the distance error between two adjacent locating pins is not more than 0.05 mm. As shown in fig. 1, the first part is fixed to the main fixture 2 using positioning pins 21 and 22.

The other frock of line 3 adopts the locating pin to fix on fixed bolster 1. The other frock of line 3 adopts two at least locating pins to fix on fixed bolster 1. The distance error between two adjacent positioning pins is not more than 0.05 mm. As shown in fig. 1, the wayside fixture 3 is fixed on the fixing support 1 by using a positioning pin 11 and a positioning pin 12.

The hand grip 4 is fixed on the line side tool 3 by adopting at least two positioning pins. The distance error between two adjacent positioning pins is not more than 0.05 mm. As shown in fig. 1, the gripper 4 is fixed to the line side tool 3 using a positioning pin 31 and a positioning pin 32. The second part is fixed on the hand grip 4 by at least two telescopic pins. The distance error between two adjacent telescopic pins is not more than 0.05 mm. As shown in fig. 1, the second part is secured to the hand grip 4 using a telescopic pin 41 and a telescopic pin 42.

The part positioning method comprises the following steps:

s1, positioning the first part: fixing the fixed support 1 on the ground, installing the main tool 2 on the fixed support 1, and positioning the first part on the main tool 2.

And a main tool 2 is positioned on the fixed support 1 by a positioning pin. When main frock 2 location is on fixed bolster 1, need two locating pins at least to carry out the location of main frock 2, and the distance error between two adjacent locating pins is not more than 0.05 mm.

When the first part is positioned on the main tool 2, at least two positioning pins are needed for positioning the first part, and the distance error between two adjacent positioning pins is not more than 0.05 mm. Specifically, the first part is positioned on the main tool 2 by using the positioning pins 21 and 22.

S2, positioning the second part: and positioning a line side tool 3 on the fixed support 1, positioning a gripper 4 on the line side tool 3, and positioning a second part on the gripper 4.

And on the same fixed support 1, a positioning pin is adopted to position a tooling 3 beside the line. When the other frock 3 of line was fixed a position on fixed bolster 1, need two locating pins at least and carry out the location of other frock of line 3, the distance error between two adjacent locating pins is not more than 0.05 mm. Specifically, the line side tool 3 is positioned on the fixing support 1 by using a positioning pin 11 and a positioning pin 12.

When the gripper 4 is positioned on the line side tool 3, at least two positioning pins are needed for positioning the gripper 4, and the distance error between every two adjacent positioning pins is not more than 0.05 mm. Specifically, the gripper 4 is positioned on the line side tool 3 by using a positioning pin 31 and a positioning pin 32.

When the second part is positioned on the hand grip 4, at least two positioning pins are needed for positioning the second part, and the distance error between two adjacent positioning pins is not more than 0.05 mm. In particular, the second part is positioned on the hand grip 4 using a telescopic pin 41 and a telescopic pin 42.

In one embodiment, referring to fig. 3, the method of the present invention may be subdivided into the following specific steps:

1) fixing a support: the fixing bracket 1 is fixed on the ground.

2) Positioning the tool: the main tool 2 is installed on the fixed support 1.

3) Positioning the first part: a first part is positioned on the main tooling 2.

4) Positioning a line side tool: and positioning a tooling 3 beside the line on the fixed support 1.

5) Positioning the gripper: and positioning the gripper 4 on the line side tool 3.

6) Positioning the second part: the second part is positioned on the grip 4.

In the above steps, after the step 1) is completed, the positioning of the steps 4) to 6) may be performed first, and then the positioning of the steps 2) to 3) may be performed.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.