KR20110025256A

KR20110025256A - Location pin

Info

Publication number: KR20110025256A
Application number: KR1020090083239A
Authority: KR
Inventors: 김철우
Original assignee: (주)유스텍
Priority date: 2009-09-04
Filing date: 2009-09-04
Publication date: 2011-03-10
Also published as: WO2011027934A1

Abstract

PURPOSE: A positioning pin is provided to enable reaction force to a target to be stably and efficiently absorbed in contact since a four-bar link, which uses two leaf springs, is applied. CONSTITUTION: A positioning pin(100) comprises a contact bearing member(110), a shaft member(107) and a first leaf spring member(101). The contact bearing member reduces contact resistance and is inserted into the groove of a target. The contact bearing member is installed on the leading end of the shaft member, and the shaft member supports the contact bearing member. One end of the first leaf spring member is fixed to a base(10), and the other end of the first leaf spring member is coupled to the shaft member perpendicularly to an axial direction. The first leaf spring member absorbs resistance when the contact bearing member is inserted into the groove of the target.

Description

Positioning pin {Location Pin}

The present invention relates to a pin for positioning to detect the position of the object by being fitted to the groove provided in the object to face the object during the rotational movement or linear movement, and to reduce the friction between the groove and the pin as much as possible It relates to a positioning pin to reduce the wear of the groove.

Positioning pins are applied to various fields such as press processing, automobiles, and semiconductor equipment, and are means for determining or detecting the position of an object by inserting the pin into a groove formed in the object.

For example, even if the object in the rotational movement or linear movement is controlled to a certain position by the motor control or the like, there is bound to include some errors. In this case, the positioning pin is inserted into the groove formed in the object to finally find the correct position.

The insertion of the pin may be made as the object moves to the positioning pin, or the positioning pin itself may be made by moving to the groove of the object by other means. In this process, the insertion of the pin is subjected to some friction and contact repulsive force due to the fact that the center of the groove and the pin axis do not coincide exactly.

An object of the present invention is provided so as to oppose an object during rotational movement or linear movement, while being inserted into a groove provided in the object to detect the position of the object while reducing the friction between the groove and the pin to reduce the wear of the pin and the groove. In providing a positioning pin.

In order to achieve the above object, a positioning pin for positioning the object by being positioned facing the groove formed in the object according to the present invention and fitted into the groove includes a contact bearing member, a shaft member, and a first leaf spring member. It includes.

The contact bearing member is inserted into the groove of the object to determine the position of the object to reduce the friction of the insertion process, the shaft member is to support the contact bearing member provided extending in the axial direction at the tip. One end of the first leaf spring member is fixed to the base and the other end thereof is coupled to the shaft member perpendicularly to the axial direction, thereby absorbing resistance generated in the process of fitting the contact bearing member into the groove. Therefore, not only the reduction of friction by the contact bearing member but also the absorption of contact resistance by the leaf spring member can prevent wear of the object or the positioning pin in the positioning process.

Here, it is preferable that the contact bearing member is a rolling bearing which reduces friction by rolling when fitted into the groove of the object.

According to another embodiment, the positioning pin may include a second leaf spring member provided in parallel with the first leaf spring member at a predetermined interval and having one end fixed to the base, and the other end of the second leaf spring member. It may further include a connecting member coupled to the other end of the first leaf spring member to maintain the gap so that the first leaf spring member and the second leaf spring member interlock with each other.

This two leaf spring structure has a four-section link structure to absorb the resistance transmitted through the contact bearing member more effectively and stably than the one leaf spring structure.

The positioning pin according to the present invention can reduce friction in the contact process by using a bearing as a contact tip contacting the groove. In addition, the positioning pin of the present invention has a four-section link structure using two leaf springs, and can effectively reduce the wear of the object or itself by absorbing the repulsive force with the object generated in the contact process stably and efficiently. .

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the drawings.

1 is a perspective view of a positioning pin according to an embodiment of the present invention, Figure 2 is a plan view of the positioning pin of Figure 1, Figure 3 is provided to explain the operation of the positioning pin of the present invention Drawing.

Referring to FIG. 1, the positioning pin 100 includes a first spring member 101, a second spring member 103, a connection member 105, a shaft 107, and a contact bearing member 110. It is fixed to the base 10.

The first spring member 101 and the second spring member 103 are provided in parallel with each other at a predetermined interval, and one end of the first spring member 101 and the second spring member 103 is bolted or the like. It is fixed to the base 10 in the form of being coupled to the base 10 by the coupling means of the. The other ends of the first spring member 101 and the second spring member 103 are also coupled to each other by being spaced apart from each other by the connection member 105. The connecting member 105 also interconnects the first spring member 101 and the second spring member 103 by using a coupling means such as a bolt.

As a result, the first spring member 101 and the second spring member 103 have a four-section link structure, and stably and effectively absorb the contact repulsive force transmitted through the contact bearing member as described below.

The shaft 107 is vertically coupled to the other end of the first spring member 101. The shaft 107 supports the contact bearing member 110 provided at its front end and transmits the repulsive force transmitted from the contact bearing member 110 to the first spring member 101 and the second spring member 103.

The contact bearing member 110 is a tip that determines the position of the object 20 by being fitted into the groove 21 of the object 20, thereby reducing the contact resistance generated in the process of being fitted into the groove 21. The repulsive force due to friction with the inner surface of the groove 21 is transmitted to the shaft 107.

The contact bearing member 110 may use all types of bearings, and rolling bearings that reduce friction by rolling when fitted into the grooves are preferable. 1 and 2 is an example using a rolling bearing that rotates in only one direction, the rolling bearing 111 is fitted to the shaft member 113 is provided at the tip of the shaft 107, the shaft Fixing pins 115 are coupled to both ends of the member 113.

The contact bearing member 110 may appropriately set the rolling direction of the rolling bearing or rotate the bearing in various directions depending on whether the entire object 20 is rotated and moved, the rotating or moving direction, the internal shape of the groove 21, and the like. Can be used.

Hereinafter, the operation of the positioning pin 100 around the contact bearing member 110 will be described with reference to FIG. 3.

Referring to FIG. 3, the groove 21 formed in the object 20 is formed to be inclined so that its diameter becomes narrower as it enters from the entrance. The inclined surface inside the groove 21 guides the progress of the contact bearing member 110 of the positioning pin 100.

The contact bearing member 110 of the positioning pin 100 is positioned to face the groove 21 formed in the object 20. The object 20 may be rotating or moving, and after reaching a predetermined predetermined position, the positioning pin 100 is seated in the groove 21 of the object 20 to accurately correct the position of the object 20. And decide.

As described above, the insertion of the contact bearing member 110 of the positioning pin 100 may be made as the object moves toward the positioning pin 100, and the positioning pin 100 may be a cylinder ( It may be made while moving in the direction of the groove 21 of the object 20 by an external drive means such as Cy linder.

For example, when the object 20 moves in the direction of the positioning pin 100 as shown in FIG. 3, the contact bearing member 110 is moved as the groove 21 of the object 20 approaches the contact bearing member 110. Insertion is made. In this process, the insertion of the positioning pin 100 proceeds while rolling along the inner slope of the groove 21 due to the reason that the center of the groove 21 and the center of the contact bearing member 110 do not coincide exactly. And some friction and repulsive force are caused by the movement of the object and the contact with the object. However, the contact bearing member 110 reduces friction as much as possible, and the repulsive force from the object 20 is transmitted to and absorbed by the first spring member 101 and the second spring member 103 through the shaft 107.

As a result, the problem of wear of the object or the positioning pin that may occur due to friction in the insertion process, even if the groove of the object and the center of the positioning pin is not exactly matched, or even if the center is the same. Is eliminated by

The positioning pin according to another exemplary embodiment of the present invention may not include two leaf spring members as in the positioning pin 100 of FIGS. 1 to 3 but may include only one leaf spring member. However, this structure may be somewhat inferior to the absorption performance of the repulsive force compared to the positioning pin 100 of Figure 1 having a four-section link structure.

Although the above has been illustrated and described with respect to preferred embodiments of the present invention, the present invention is not limited to the above-described specific embodiments, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a perspective view of a positioning pin according to an embodiment of the present invention,

2 is a plan view of the positioning pin of FIG. 1, and

3 is a view provided to explain the operation of the positioning pin of the present invention.

10: base 20: object

21: groove 101: first leaf spring member

103: second leaf spring member 105: connecting member

107: shaft 110: contact bearing member

111: rolling bearing 113: shaft member

115: push pin

Claims

In the positioning pin that is positioned to face the groove formed in the object and is fitted into the groove to determine the position of the object,

A contact bearing member fitted into a groove of the object while reducing contact resistance;

A shaft member supporting the contact bearing member provided axially extending at a tip end thereof;

And a first leaf spring member having one end fixed to the base and the other end coupled to the shaft member perpendicularly to the axial direction to absorb resistance generated in the process of fitting the contact bearing member to the groove. Positioning pin.

The method of claim 1,

The contact bearing member,

Positioning pin, characterized in that the rolling bearing to reduce the friction by rolling when fitted into the groove of the object.

The method of claim 1,

A second leaf spring member spaced apart from the first leaf spring member in parallel with a predetermined interval and having one end fixed to the base; And

And a connecting member configured to mutually couple the other end of the second leaf spring member to the other end of the first leaf spring member to maintain the gap so that the first leaf spring member and the second leaf spring member interlock with each other. Positioning pin, characterized in that.