KR20140118098A

KR20140118098A - Burnishing apparatus using robot gripper

Info

Publication number: KR20140118098A
Application number: KR1020130033397A
Authority: KR
Inventors: 봉혁
Original assignee: (주)트윈테크
Priority date: 2013-03-28
Filing date: 2013-03-28
Publication date: 2014-10-08

Abstract

The present invention relates to a device for burnishing a wheel using a robot gripper. More specifically, the device can burnish wheels in various shapes without an additional burnishing fixation frame. Therefore, a user of the device does not need to quickly respond to various products and to manufacture an additional and customized fixture.

Description

BURNISHING APPARATUS USING ROBOT GRIPPER USING ROBOT GRIPPER

The present invention relates to a burnishing apparatus for a wheel using a robot gripper. More particularly, the present invention relates to a burnishing apparatus for a wheel using a robot gripper, which can process various types of wheels without a separate burnishing fixture, .

The burnishing process is as follows.

Burnishing is to form compressive residual stress on the surface to prevent fatigue breakdown due to long use of important parts with weak use environment, which can be expected to improve the life of aluminum wheel under dynamic load. Hydrostatic burnishing consists of a hydraulic device and a fixture. Depending on the shape, several fixtures are used.

It is possible to improve the surface roughness (Ra0.2 um), surface hardness (20 ~ 30% increase), and surface roughness Fatigue strength improvement (150% to 400% increase), no dust, and no sharp burr.

However, the maximum angle of burnishing is within 30 degrees, but burnishing is required at various angles due to the shape characteristic of the wheel.

Therefore, whenever the production specifications of the wheel are changed, it is troublesome to replace and install the burnishing tool fixture inside the CNC lathe.

Therefore, the present invention intends to provide a device that does not require a separate burnishing tool fixture for various types of wheels by performing the work performed by the robot in place of the robot and performing burnishing using the robot.

In order to solve the above-mentioned problem, the present invention provides a robot arm comprising: a body 10 connected to a robot arm; A pair of actuators 21 provided on both sides of the body 10; A pair of grippers 22 driven by the actuator 21 and rotatably provided symmetrically with respect to the body 10; A secondary fixing member (25) linked to the inside of the gripper (22) and provided to move forward or backward by the rotation of the gripper (22); And a burnishing arm 12 provided on the body 10.

According to the present invention, handling and burnishing of heavy aluminum wheels can be performed by using one robot, thereby providing an effect of increasing productivity and stabilizing product quality due to reduction in labor costs.

1 is a sectional view of a wheel to which the present invention is applied;
2 is a perspective view of a burnishing apparatus for a wheel using a robot gripper according to the present invention.
3 to 6 are views of a burnishing apparatus for a wheel using a robot gripper according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Even if the terms are the same, it is to be noted that when the portions to be displayed differ, the reference signs do not coincide.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

The terms first, second, etc. in this specification may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings.

As shown in Fig. 1, aluminum wheels have various specifications. In particular, the produced wheels are used for commercial vehicles. They are about 25kg ~ 47kg in weight and about 20kg in weight.

The manufacturing process thereof is as follows.

1) The aluminum wheel is melted through casting and then the primary molding is performed. 2) The inside of the product is compacted into a compact structure by pressing it. 3) Roughing using CNC lathe, MCT 4) After finishing machining by V-machine, finish machining by final finishing process using CNC lathe.

The core of the present invention is the turning process of the wheels produced in the casting process and the burnishing process for improving the surface roughness and hardness in the plastic processing field using the robot. The robot holds the aluminum wheel by using the multipurpose grip, The gripper is inserted into the gripper holder and the burnishing is performed in the intermediate step between the lathe machining and the V machining using the burnishing tool attached to the arm of the robot.

This enables the various types of wheels to be processed without a separate burnishing fixture, which makes it possible to quickly respond to various products and eliminate the necessity of manufacturing separate jig. In addition, through this, there is an advantage that productivity is expected to increase and the robot performs the work performed by the operator, thereby reducing safety accidents.

5 and 7 are flowcharts of a robot applying process in a system to which the present invention is applied.

The process of producing aluminum wheels consists of casting, forging, plastic working, inspection and post-treatment processes. In the present invention, a burnishing process is performed using a single robot and a handling and burnishing tool for performing an operation of loading / unloading an aluminum wheel on a CNC lathe in a plastic working process.

More specifically, 1) supplying the aluminum wheel through the input conveyor, 2) using the multipurpose gripper to grasp the wheel and supplying it to the CNC lathe, 3) the robot removes the multipurpose gripper to the gripper die, A burnishing operation is carried out using a burnishing tool fixedly mounted on the robot arm, and 4) a step of mounting the gripping wheel to the burnishing operation finisher and placing the wheel on the discharge conveyor to discharge the finished product.

Figure 4 shows a layout view of such a process system.

2 shows a burnishing apparatus using a gripper according to the present invention.

The present invention seeks to develop a versatile gripper for loading / unloading aluminum wheels of various shapes and sizes. So that the circular portion of the wheel can be clamped by the three-point support. In addition, clamping is performed using an actuator using air pressure.

The burnishing tool is operated by hydraulic pressure and is applied to the type that is fixed to the robot arm.

There is a fixture that can fix the verticing tool to the arm of the robot, and the function of the burnishing ball part is to move forward / backward. The stroke at this time is about 6mm, And provide a buffering role.

The burnishing apparatus according to the present invention will be described with reference to FIG.

A main body 10 serving as a mounting fixture is mounted on a robot arm (not shown). On both sides of the main body 10, a pair of actuators 21 are provided to actuate the gripper 22. The gripper 22 is connected to the front end of the main body 10 in a rotatable manner and is provided in a curved or bent form as shown in FIG. And rotates about the pivotal part by the movement of the actuator. A main fixing member 23 is provided at the end of the gripper 22 so as not to slip by holding the wheel. As shown in Fig. 2, these grippers are provided with a symmetrical structure.

Further, for the three-point support, a sub fixing member 25 is provided on the inside of the gripper through a link connection. When the gripper 22 moves inward, the sub fixing member 25 is moved to the wheel side by the link operation and supported.

A burnishing arm 12 is provided at the other portion of the body 10. The burnishing arm 12 has a high degree of freedom and must be provided so that the burnishing tool 13 can operate as smoothly as possible. The burnishing tool 13 is provided in the burnishing arm 12, and the own maker controls the burnishing arm to move the burnishing tool 13 to the wheel side to perform the burning operation.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

10: Body
12: Burnishing arm
13: burnishing tool
21: Actuator
22: Gripper
23: Main fixing member
24: Link
25:
100: Wheel

Claims

A body 10 connected to the robot arm;
A pair of actuators 21 provided on both sides of the body 10;
A pair of grippers 22 driven by the actuator 21 and rotatably provided symmetrically with respect to the body 10;
A secondary fixing member (25) linked to the inside of the gripper (22) and provided to move forward or backward by the rotation of the gripper (22);
And a burnishing arm (12) provided on the body portion (10)
Burning device of wheel using robot gripper.

The method according to claim 1,
A burnishing tool (13) is provided at an end of the burnishing arm (12)
Burning device of wheel using robot gripper.

The method according to claim 1,
And a main fixing member 23 for preventing sliding with the wheel is further provided at an end of the gripper 22,
Burning device of wheel using robot gripper.