KR20080103818A

KR20080103818A - A jig unit for connecting rod

Info

Publication number: KR20080103818A
Application number: KR1020070051029A
Authority: KR
Inventors: 현승순
Original assignee: 기아자동차주식회사
Priority date: 2007-05-25
Filing date: 2007-05-25
Publication date: 2008-11-28

Abstract

The present invention provides a connecting rod machining jig unit for improving the productivity by increasing the line operation rate to have a common for connecting rods of various specifications.

Description

Jig unit for connecting rod machining {A JIG UNIT FOR CONNECTING ROD}

1 is a perspective view of a connection between a general connecting rod and a piston and a crankshaft.

2 is a perspective view of a general connecting rod.

3 is a side view of the jig unit for connecting rod machining according to the prior art.

Figure 4 is a partial side view of a jig unit for connecting rod machining according to an embodiment of the present invention.

5 is a partially enlarged perspective view of a jig unit for connecting rod machining according to an embodiment of the present invention.

The present invention relates to a jig unit for connecting rod processing, and more particularly, to a jig unit for connecting rod processing for improving productivity by increasing the line operation rate by having commonality for connecting rods of various specifications.

As is well known, as shown in FIG. 1, the engine 1 is slidably installed inside the cylinder bore to vertically reciprocate by the explosion pressure in the combustion chamber. It is connected to the crankshaft 5 through the necking rod 3 to transfer the up and down reciprocating motion to the crankshaft 5 in a rotational motion.

As shown in FIG. 2, the connecting rod 3 has a small end portion 11 formed thereon for connecting to the piston 1 via a piston pin 7, and a lower portion thereof. A large end 13 is formed for connecting to the shaft 5.

The connecting rod 3 is introduced into the final engine assembly process through the production line and the processing line, which is connected to the jig unit 20 as shown in FIG. 3 in the processing line. It is processed in a fixed state.

The conventional connecting rod processing jig unit 20, as shown in the drawing, on the upper and lower reference blocks (23, 25) configured on the jig base 21 and the large end 13 of the connecting rod (3) The small end 11 is positioned, respectively, and the large end clamper 27 and the small end clamper 29 are bolted to fix the connecting rod 3 to the jig base 21.

In this state, the jig unit 20 makes it possible to process the respective bore of the large end 13 and the small end 11 of the connecting rod 3 by a boring machine.

However, in the conventional connecting rod machining jig unit as described above, when the specifications of the connecting rod for each vehicle are varied, the upper and lower reference blocks, the large end clamper and the small end clamper that meet the specifications of the corresponding connecting rod must be replaced. As a result, there is a problem in that the line operation rate decreases as much as the replacement time.

Therefore, the present invention has been invented to solve the above problems, an object of the present invention is to have a common for the connecting rod of various specifications to increase the line operation rate to improve the productivity of the connecting rod machining jig unit To provide.

Jig unit for connecting rod processing according to the present invention for achieving the above object is a jig base; An upper reference block mounted above the jig base; A large end clamper for fixing a large end of the connecting rod positioned in the upper reference block; A slide block mounted on both sides of the jig base at a lower portion of the upper reference block through guide means and slidably mounted in a vertical direction along a cross section of the jig base; A small end clamper for fixing a small end of the connecting rod positioned in the slide block; A driving cylinder mounted at a lower center on the jig base, and an operating rod of which is connected to a lower end of the slide block through a bracket to slide the slide block up and down with respect to the jig base; The upper side of the jig base is configured to include a stopper means for limiting the slide stroke by supporting one side of the slide block for each specification of the connecting rod.

The guide means includes a guide shaft mounted on both sides of the jig base in the vertical direction through a fixed block at both ends; It is formed of the slide housing which is formed at both ends of the slide block and fitted to each of the guide shaft.

Each of the slide housings may be integrally formed with a stopper support end that protrudes outward and is supported by the stopper means.

It is preferable that the said drive cylinder consists of a hydraulic cylinder which makes hydraulic pressure an operating pressure.

The stopper means may include a circular stopper block bolted to a mounting end integrally formed at both upper ends of the jig base; Characterized in that the bottom surface of the stopper block is made of a plurality of stoppers are installed in different lengths for each specification along the circumferential direction.

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

4 is a partial side view of the jig unit for connecting rod processing according to an embodiment of the present invention, Figure 5 is a partially enlarged perspective view of the jig unit for connecting rod processing according to an embodiment of the present invention.

The connecting rod machining jig unit according to the present embodiment is provided with a jig base 51.

The upper reference block 53 is mounted on the jig base 51 in the width direction.

In addition, the upper reference block 53 is provided with a large end clamper 55 to fix the large end 60 of the connecting rod 50 located therein and fastened thereto.

In addition, the lower side of the upper reference block 53, the slide block 57 is mounted on both sides of the jig base 51 through the guide means, the slide block 57 is a cross section of the jig base 51 It is mounted so as to slide in the vertical direction.

Here, the guide means 59 is mounted to both sides of the jig base 51 in the vertical direction through the fixed block 61 at both ends in the up and down direction, and the both ends of the slide block (57) The slide housing 65 fitted to each guide shaft 63 is formed integrally.

In addition, the slide block 57 is provided with a small end clamper 67 to fix the small end 70 of the connecting rod 50 located therein, and is fastened to the slide block 57.

Meanwhile, a driving cylinder 69 is mounted at the lower center of the jig base 51, and the driving cylinder 69 has the operating rod 71 through the bracket 73 at the lower end of the slide block 57. The slide block 57 is operated to slide up and down with respect to the jig base 51.

Here, it is preferable that the said drive cylinder 69 consists of a hydraulic cylinder which makes hydraulic pressure an operating pressure.

In addition, stopper means 75 are configured at both upper ends of the jig base 51 to support one side of the slide block 57 according to the specifications of the connecting rod 50 to limit the slide stroke. A circular stopper block 79 bolted to a mounting end 77 integrally formed at both upper ends of the jig base 51 and a lower surface of the stopper block 79 along the circumferential direction. It consists of five stoppers 81 installed with different lengths for each specification.

In the slide housing 65, the stopper support end 83 is integrally formed so as to protrude outwardly so as to be supported corresponding to the stopper 81 for each specification of the stopper means 75.

Therefore, the operation of the connecting rod machining jig unit having the configuration as described above, as shown in Figure 5, first, the stopper 81 corresponding to the specification of the connecting rod 50 to be fixed is a stopper support end ( The drive block 69 is moved to move the slide block 57 in a state in which the stopper block 79 is operated and fixed to correspond to 83.

Then, the slide block 57 is fixed while the stopper support end 81 is in contact with and supported by the stopper 81 of the specification.

In this state, the large end portion 60 and the small end portion 70 of the connecting rod 50 are positioned on the upper reference block 53 and the slide block 57 formed on the jig base 51, respectively. In each case, the large end clamper 55 and the small end clamper 67 are bolted to fix the connecting rod 50 to the jig base 51.

In this way, while the connecting rod 50 is fixed to the jig base 51, the bores of the large end 60 and the small end 70 of the connecting rod 50 can be processed by a boring machine. Will be.

Therefore, the connecting rod machining jig unit according to the present embodiment is to support the stopper support end 83 with the stopper 81 corresponding to the specification for each connecting rod when the specification of the connecting rod 50 is changed. As a result, the stroke of the slide block 57 by the driving cylinder 69 may be limited so that the slide block 57 may correspond to the specification of the connecting rod 50 for each specification based on the upper reference block 53.

According to the connecting rod machining jig unit of the present invention as described above, the slide block is limited by the stopper according to the specification of the connecting rod based on the upper reference block supporting the large end of the connecting rod, the connecting By supporting the small end of the rod, it has commonality for connecting rods of various specifications, which makes it possible to increase the line utilization rate and improve productivity by not requiring replacement of jig parts by specifications.

Claims

In the jig unit for connecting rod machining,

Jig base;

An upper reference block mounted above the jig base;

A large end clamper for fixing a large end of the connecting rod positioned in the upper reference block;

A slide block mounted on both sides of the jig base at a lower portion of the upper reference block through guide means and slidably mounted in a vertical direction along a cross section of the jig base;

A small end clamper for fixing a small end of the connecting rod positioned in the slide block;

A driving cylinder mounted at a lower center on the jig base, and an operating rod of which is connected to a lower end of the slide block through a bracket to slide the slide block up and down with respect to the jig base;

The jig unit for connecting rod processing comprises a stopper means configured to support both sides of the slide block according to the specifications of the connecting rod is configured on both sides of the jig base to limit the slide stroke.

The method of claim 1,

The guide means

Guide shafts mounted on both sides of the jig base through fixing blocks at both ends in a vertical direction;

Jig unit for connecting rod processing is formed on both ends of the slide block made of a slide housing fitted to each of the guide shaft.

The method of claim 2,

Each of the slide housing is jig unit for connecting rod processing, characterized in that the stopper supporting end which is protruded to the outside to be supported by the stopper means integrally formed.

The method of claim 1,

The driving cylinder is a connecting rod processing jig unit, characterized in that made of a hydraulic cylinder with the hydraulic pressure as the operating pressure.

The method of claim 1,

The stopper means

A circular stopper block bolted to a mounting end integrally formed at both upper ends of the jig base;

Jig unit for connecting rod processing, characterized in that consisting of a plurality of stoppers are installed in the lower surface of the stopper block to vary the length for each specification along the circumferential direction.