KR100680843B1 - System for preventing t00th nick - Google Patents

Abstract

A system for preventing a tooth nick is provided to reduce the load of a worker by reducing a tooth nick generating rate, to improve an efficiency of work, and to save a cost. In a system for preventing a tooth nick, chambers(42) are installed on the right and left sides of a ball guide(41) of a pin cage assembly(40). A damper and a power supply apparatus connected to one side of the damper are provided in the chamber. An encoder for measuring the rotational displacement is installed on one side of the ball guide. A computer analyzes the data of the encoder. A spring is installed in the chamber. If a chuck collides with a work, the encoder measures the rotational displacement. A current is supplied to the chamber filled with MR fluid. The maximum displacement is set and then the minimum mounting time is set. The ball guide of the pin cage assembly functions as a guide of the work.

Description

Tooth prevention device {SYSTEM FOR PREVENTING T00TH NICK}

1 is a view schematically showing the configuration of a conventional pin cage assembly.

Figure 2 is a schematic view showing the configuration of a tooth protector according to the present invention.

Figure 3 is a schematic flow chart showing the operation of the chinkkeki according to the present invention in sequence.

4 is a schematic time-displacement graph to which the present invention is applied.

<Description of Symbols for Main Parts of Drawings>

40. Pin Cage Assemblies

41. Ball Guide

42. Chamber

42a. Fluid

The present invention relates to a tooth protector, and more particularly, to a tooth protector for preventing damage due to a collision of a pincage assembly (CHUCK) and the work (WORK).

FIG. 1 shows, for example, the tooth end of a gear WORK 13 first touching the ball guide 12 of the pincage assembly 10 while rotating, and rotating along the ball guide 12. At the same time, the system engages the pin 11 and finally the pin 11 advances to clamp the work 13.

And collides with the ball guide 12 and the end of the workpiece 13 when engaged with the workpiece 13, which is rotating in the opposite direction to the pin cage assembly 10 which is rotating at 50 RPM when the workpiece 13 is being loaded. This happens.

Accordingly, since the ball guide (complete bolt fixation-flexibility 0%) 12 does not absorb the impact amount, the end of the work 13 receives the impact amount without filtration, causing nicking and breakage.

As described above, in the prior art, when the workpiece 13 is loaded, chinches are generated and broken due to the collision between the tooth ends and the pin cage assembly 10 which is the chuck CHUCK.

In addition, the automation of mass production line (disruption of operation rate) occurs, the operation rate is lowered by manual modification by the operator, and quality problems occur when the defective transmission is installed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a device for preventing a leak due to a collision between a pincage assembly CHUCK and a work.

In order to achieve the above object, a device for preventing a toothache includes a damper having a chamber installed at left and right sides of a ball guide of a pin cage assembly and inserting a fluid into the chamber; And a power supply connected to one side of the damper.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic diagram showing the configuration of the apparatus for preventing tooth chin according to the present invention.

Referring to the drawings, the device for preventing a tooth leak according to the present invention is provided with a chamber 42 on the left and right sides of the ball guide 41 of the pin cage assembly 40 and a fluid 42a inserted into the chamber 42. It comprises a damper and a power supply (not shown) connected to one side of the damper.

And the fluid comprises an MR fluid.

In addition, an encoder (ENCODER) (not shown) for measuring a rotational displacement is provided at one side of the ball guide 41, and a computer (not shown) for analyzing data of the encoder is provided.

In addition, a spring 43 is installed in the chamber 42.

Referring to the operation of the tooth protector according to the present invention having the configuration as described above are as follows.

Referring again to the drawings, the device for preventing the tooth leak according to the present invention is to prevent damage due to the collision between the pin cage assembly (CHUCK) 40 and the work.

In the existing apparatus as shown in FIG. 1, the biggest cause of the occurrence of the leak is a large inertial body called the pincage assembly 40, while the weak portion of the workpiece collides with the tooth tip while the collision amount is not absorbed in the workpiece. Because of the transmission, breakage of gear teeth occurs.

In order to solve this problem, the present invention is to install a device that absorbs the amount of impact generated during a collision because such a collision is unavoidable during work setup of an existing apparatus.

Although a method of slowing down the rotational speed of the CHUCK part was also tried, when the rotational speed of an object of several hundred kg was lower than the reference set value (50 rpm), an incorrect operation problem occurred.

Figure 2 is a schematic flow chart showing the operation of the tooth protector according to the present invention in sequence.

First, when the chuck (pin cage assembly 40) collides with the workpiece, the encoder measures the rotational displacement. (Steps 110, 120)

Then, a current is supplied to the chamber filled with MR fluid (step 130).

The device (system) can then be stabilized (step 140).

The maximum displacement is set between the steps 130 and 140, and the minimum settling time is set (step 150).

In addition, as shown in Figure 4, the maximum displacement limit (C), the ball guide 41 of the pin cage assembly 40 should act as a guide of the work, so if there is too large position change, functional limitations There is a possibility.

The minimum fixation time (D) is a short time for the ball guide 41 and the work of the pin cage assembly 40 to be coupled, so that if the fixation time is late and a position change occurs, there is a possibility of functional limitation.

As described above, the device for preventing ticks according to the present invention has the following effects.

Damage due to collision between the pincage assembly CHUCK and the workpiece WORK can be prevented.

In addition, the reduction in the occurrence rate of the chin can reduce the load of the worker, increase the work efficiency, reduce the cost, and improve the product quality.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (4)

A damper provided with chambers on the left and right sides of the ball cage of the pin cage assembly, and a fluid inserted into the chamber; And a power supply connected to one side of the damper. The method of claim 1, The fluid prevention device, characterized in that the fluid comprises MR fluid. The method of claim 1, An encoder for measuring a rotational displacement is installed at one side of the ball guide, and the chinkkeki device, characterized in that the computer for analyzing the data of the encoder is provided. The method of claim 1, The device of claim 1, wherein a spring is installed in the chamber.

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