KR101602118B1 - A connecting rod processing jig - Google Patents

A connecting rod processing jig Download PDF

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Publication number
KR101602118B1
KR101602118B1 KR1020150168645A KR20150168645A KR101602118B1 KR 101602118 B1 KR101602118 B1 KR 101602118B1 KR 1020150168645 A KR1020150168645 A KR 1020150168645A KR 20150168645 A KR20150168645 A KR 20150168645A KR 101602118 B1 KR101602118 B1 KR 101602118B1
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KR
South Korea
Prior art keywords
plate
connecting rod
fixed
support
base plate
Prior art date
Application number
KR1020150168645A
Other languages
Korean (ko)
Inventor
허경범
Original Assignee
주식회사 대송
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Priority to KR1020150168645A priority Critical patent/KR101602118B1/en
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Publication of KR101602118B1 publication Critical patent/KR101602118B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/08—Work-clamping means other than mechanically-actuated
    • B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/04—Connecting rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The present invention can quickly and accurately replace a machining apparatus when machining a variety of workpieces having different sizes, so that a small quantity of various types of workpieces can be smoothly processed, so that it can be economically applied to a small-sized machining site.
A connecting rod processing jig which is disposed and fixed at a working position of a processing device for processing a connecting rod workpiece having a small end portion having a pinhole into which a piston pin is inserted and a large end portion of the coupling portion being coupled to the crankshaft via a bearing, ; A jig base plate made of a plate shaped plate placed on an upper portion of a machining base plate disposed at a machining position of the machining apparatus; A fixing plate composed of a plate-shaped plate which is arranged and fixed in a direction parallel to a position vertically spaced from the jig base plate; A small end support member provided on a surface of the fixing plate and supporting a small end portion of the connecting rod workpiece; and a large end support member for supporting a large end portion of the connecting rod workpiece; And the upper surface of the large end portion is closely contacted with and spaced apart from the large end support member in a direction perpendicular to the fixed plate, And a fixing means.

Description

[0001] A connecting rod processing jig [

The present invention relates to a jig for fixing a workpiece when the connecting rod is operated, and more particularly, to a jig for fixing a connecting rod workpiece by stably fixing the workpiece, The present invention relates to a connecting rod processing jig that can be smoothly carried out in a small quantity of various types and can be economically applied to a small-scale processing site.

Generally, when the components of an automobile engine are roughly divided, a plurality of cylinders are integrally formed as a part constituting the main body of the engine, and a water jacket in which cooling water flows and a cylinder block And a cylinder head disposed at the upper portion of the cylinder block and forming a combustion chamber together with the piston. The cylinder head is provided with various valve mechanisms, spark plugs, injection valves, and the like, and a crankcase provided with a crankshaft.

A cylinder formed integrally with the cylinder block is provided with a piston which moves up and down along the wall surface of the cylinder by the rotational force of the crankshaft transmitted through the connecting rod. In the combustion chamber provided by the cylinder head and the head portion of the piston, The air introduced into the intake port through the manifold is sucked.

As described above, the air sucked through the intake system mixes with the fuel injected from the injection valve to form a mixer, and the mixer compressed by the piston moving up and down along the cylinder wall by the connecting rod connected to the crankshaft By ignition by the spark plug, the crankshaft is rotated by the explosive force generated at this time to obtain power.

The connecting rod is connected to the crankshaft and is used as a medium for vertically reciprocating the piston. Bearing is provided on the crankshaft, and the connecting rod and the connecting cap are mounted on the crankshaft as bolt fastening means .

Accordingly, in order to connect the connecting cap to the connecting rod with a bolt, a flange portion facing each other is formed on the connecting rod and the connecting cap, and the bolt hole is machined through the flange portion.

And the connecting rod and the connecting cap have an assembling surface which is in contact through the flange portion.

Therefore, the assembling surfaces of the connecting rod and the connecting cap are given a tolerance with respect to each other, and the crankshaft is precisely assembled.

As described above, the connecting rod may be a separate type connecting rod that is manufactured by separating a rod portion and a cap portion from each other in a material state according to a manufacturing method thereof, And an integral type connecting rod which is manufactured by separating the rod portion and the cap portion and then tightening them.

These connecting rods have various advantages compared to the detachable type connecting rods, that is, the high output / light weight / low cost of the engine, and the durability life of the main parts due to the extended durability guarantee period. Which is advantageous in that it can reduce the investment cost by simplifying the processing method (simplification of broaching due to the deletion of the broaching process and simplification of the logistics due to the integrated material type).

Such an integral type connecting rod is manufactured by integrally forming the rod using grinding, drilling and boring in the state of a material, and then cracking the rod to a rod portion and a cap portion for assembly, .

Here, the cracking method utilizes a stress concentration phenomenon in which a stress greater than a nominal stress is applied to a notch portion where a cross-sectional area or a shape rapidly changes, that is, a large portion of the connecting rod A laser (LASER) is used inside, or a notch is generated with a width of 0.3 mm and a depth of 0.5 mm in a material mold state. Then, a force is applied to a stressed portion by using a hydraulic mandrel (MANDREL) It is separated into rod and cap.

The connecting rod manufacturing method using the cracking method is separated into a rod and a cap by using a hydraulic mandrel MANDREL so that particles separated from the large end surface Inevitably, this causes air bubbles to be generated at the fracture site, and vibrations are applied to the connecting rod to remove the sludge particles attached to the material.

The present invention relates to a jig applicable to an apparatus for machining a connecting rod as described above, which is one of conventionally known connecting rod processing jigs, which is disclosed in Korean Patent Registration No. 10-0208825 (entitled: A horizontal jig that can horizontally position the connecting rod on a base plate that maintains parallelism is fixed by a fixing means and a piston ring hole formed in the connecting rod is inserted, A plurality of guide pawls for fixing the attitude of the outer surface of the connecting rod through the horizontal platen are formed on the base plate, and a dial gauge And the measuring gauge of the dial gauge is set as a guide installed on the horizontal platen So that the measurement can be made by allowing the measurer to come into contact with the assembled surface machined on both flange portions of the connecting rod.

On the other hand, in Korean Patent Registration No. 10-0191613 (titled "Fixing Jig for starting connecting rod"), as disclosed in the publication, a small end portion having a pinhole into which a piston pin is inserted and a small end portion having a pinhole inserted into a crankshaft The connecting rod of an engine for an automobile, which is constituted by a large end portion having a bearing seating surface on which an oil hole is formed, is characterized in that the connecting rod comprises a first fixing bolt for fixing a large end portion of two adjacent connecting rods to a workpiece of a vertical machining center A first clamp for fixing the small end portion of the connecting rod to the object to be worked by the third fixing bolt and a second clamp for fixing the small end portion of the connecting rod to the work object by the third fixing bolt, 3 fixing jig is described.

In the Korean Patent Registration No. 10-0361309 entitled " jig for a short pinning of a connecting rod ", a connecting rod composed of a large end portion, a small end portion and an end portion is subjected to a shot peening process The jig for fixing the connecting rods of the present invention is characterized in that the connecting rod is inserted so that the connecting rod is inserted into the jig, A jig in which a number of support rods are vertically erected on a support member is described.

In addition, in Korean Patent Registration No. 10-0456551 (name: split process jig and split breaking method of forged split steel connecting rod), as described in the publication, it is built in the inner diameter of the large end portion of the connecting rod, A wedge having a slope for applying a circumferential pressing force to the divided parts of the mandrel, the wedge being provided on the hollow part of the mandrel, Wherein the inclined surface of the wedge has an inclination angle of 5 to 9 degrees on the rod side and zero on the cap side and a difference in diameter between the mandrel and the connecting rod is 0.1 mm, The gap between the outer diameter of the mandrel decentered to the rear side of the small end portion of the connecting rod and the inner diameter of the small end portion is 2 mm and 0.2 mm respectively, The jig is a base material.

In addition, in Korean Patent Laid-Open No. 10-2008-0103209 (entitled "Connecting rod splitting device"), as described in the publication, while the connecting rod is positioned on the jig base forming the overall shape, And a plurality of connecting rod positioners vertically erected so as to hold the connecting rod, which is placed on the rod seating plate, at both widths thereof, A jig unit provided; A cylinder for moving the cylinder upward and downward while tightly fixed to the bottom surface of the jig base, and a support end for supporting the cylinder portion against the bottom surface of the jig base.

In addition, in Korean Patent Registration No. 10-1015070 (titled "boring hole processing machine of connecting rod"), as described in the publication, the front and back of the clamping unit provided on the left side of the clamping unit applied to the boring hole processing machine A left jig having a third groove formed on the left and right sides of the center thereof and a right jig having a fourth groove formed at a predetermined distance apart and having a left jig and a center jig, And a ninth cylinder corresponding to the lower boring hole of the connecting rod is provided under the gap formed between the right jig and a jig portion provided with a compression jig bundle having a fifth groove formed in the lower portion of the ninth cylinder, .

1, Korean Patent Registration No. 10-0208825 2, Korean Patent Registration No. 10-0191613 3, Korean Patent Registration No. 10-0361309 4, Korean Patent Registration No. 10-0456551 5, Korean Patent Publication No. 10-2008-0103209 6, Korean Patent Registration No. 10-1015070

However, the conventional connecting rod processing tool as described above has a problem in that it can not be applied to a small-scale processing site in which a small quantity of various kinds of processing is performed.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems of the prior art. It is an object of the present invention to improve the machining quality by stably fixing the connecting rod workpiece, The present invention provides a jig for connecting rod processing that can be smoothly performed in a small quantity and can be economically applied to a small-scale processing site.

According to an aspect of the present invention, there is provided a connecting rod processing jig including a small end portion having a pinhole into which a piston pin is inserted, a connecting rod workpiece having a large end portion coupled to the crankshaft via a bearing, In a processing position of a machining apparatus for machining a workpiece to be machined; A jig base plate made of a plate shaped plate placed on an upper portion of a machining base plate disposed at a machining position of the machining apparatus; A fixing plate composed of a plate-shaped plate which is arranged and fixed in a direction parallel to a position vertically spaced from the jig base plate; A small end support member which is fixed to the surface of the fixing plate and supports the small end portion of the connecting rod workpiece, and a large end support member which supports the large end portion of the connecting rod workpiece; A support plate elastically supported on the upper end of the fixing plate so as to be movable upward and downward and resiliently supported by an elastic spring, and a support plate provided on the jig base plate and spaced in parallel with the fixing plate And fixing means having a movable link which is vertically disposed and fixed and which reciprocates in a direction close to and spaced apart from the supporting plate so as to press the supporting plate so that the supporting plate closely contacts and supports the upper surface of the large end portion; The small-end support member includes a small-end support member fitted to the stationary plate and adapted to support the bottom surface of the small-end portion in surface contact with the stationary plate, and a small- And a support bolt screwed to the small-end support bracket, the end of the support bolt being in contact with both side surfaces of the small-end support, respectively; The large supporting member includes a large supporting member provided on the fixing plate and fitted into the large end portion, a large supporting bolt provided on the fixing plate and supporting a side surface of the large supporting member, And a support pipe having a gap between the support bolt and the other end of the support member, the support bolt being rotatably fixed to the support member, the support bolt being in contact with the side surface of the support member. The fixing means includes a fixed cylinder fixed to the jig base plate, a movable link having one end connected to the end of the piston rod of the fixed cylinder, and a movable link movable up and down And a support plate elastically supported by an elastic spring; The fixing plate includes a plate-shaped lower base plate fixed to the jig base plate in a parallel direction with an interval between vertical phases, a lower plate fixed to the upper portion of the lower base plate, And a 'base' shaped replacement base plate provided with the large base support member.

In the connecting rod processing jig of the present invention as described above, the connecting rod workpiece is stably fixed to the machining position of the machining base plate through the small end support member, the large end support member and the fixing means, It is possible to smoothly perform the machining operation such as fixing the sleeve to the pinhole of the pinhole, thereby improving the machining quality.

In addition, since the configuration of the entire jig can be changed by replacing the replacement base plate in the lower base plate, it is possible to quickly and accurately replace a jig suitable for a machining apparatus when various workpieces of different sizes are machined , It is possible to smoothly carry out a small quantity of various kinds of products, and thus it can be economically applied to a small-scale processing site.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic frontal view showing a connecting rod processing jig according to an embodiment of the present invention; FIG.
Fig. 2 is a schematic plan view showing a connecting rod processing jig according to the embodiment. Fig.
Fig. 3 is a partial schematic illustration showing a fixing plate constituting a connecting rod processing jig according to the embodiment. Fig.
Figs. 4 to 7 are schematic views showing the use state of the connecting rod processing jig according to the embodiment. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a connecting rod processing jig according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

1 to 7 show a jig for connecting rod processing according to an embodiment of the present invention. The connecting rod processing jig 1 according to this embodiment has a small end portion having a pinhole into which a piston pin is inserted, The present invention is applied to arranging and connecting the connecting rod workpiece having the large end portion coupled to the crankshaft via the bearing and having the large end portion to which the cap is engaged, at the working position of the working device.

That is, the present invention is applied to performing a stable machining operation by fixing the connecting rod workpiece 10 to a machining position in which the machining tool 21 moves in the machining apparatus and performs a machining process.

The connecting rod processing jig 1 according to the present embodiment has a jig base plate 3 formed of a plate shaped plate placed on the upper portion of a processing base plate 22 disposed at a processing position of the processing apparatus I have.

At this time, it is preferable that the jig base plate 3 is replaceably coupled to and separated from the machining base plate 22, and it is most preferable that the jig base plate 3 is coupled through a normal bolt material.

The fixing plate 4 includes a lower plate 41 having a plate shape fixed to the jig base plate 3 in a direction parallel to the upper surface of the lower base plate 41, Shaped replacement base plate 42 fixed on the upper surface of the lower base plate 41 and having the small end support member 5 and the large end support member 6 on the upper surface thereof, Preferably, the replacement base plate 42 is detachably coupled through a fastening element such as a conventional bolt material.

Thus, by replacing the replacement base plate 42 in the lower base plate 41, the structure of the jig 1 can be replaced, and when the various workpieces of different sizes are machined, the jig 1 ) Can be quickly and accurately replaced.

Therefore, it is possible to smoothly perform a small quantity of various kinds of products, and thus it can be economically applied to small-sized processing sites.

It is preferable that when the fixing plate 4 is arranged in the form of a figure on the jig base plate 3, all the jigs can be assembled at exactly the same position by the positioning pins not shown, The working time is shortened and the precision state is improved.

The connecting rod processing jig 1 according to the present embodiment is provided with a fixing plate 4 composed of a "plate" shaped plate fixedly arranged in a direction parallel to a position spaced vertically from the jig base plate 3 )Wow; A small end support member 5 provided on the surface of the fixing plate 4 for supporting the small end portion of the connecting rod workpiece 10 and an end support member for supporting the large end portion of the connecting rod workpiece 10 6).

That is, the connecting rod workpiece 10 is stably fixed to the fixing plate 4 via the small end support member 5 and the large end support member 6. [

Accordingly, when the connecting rod workpiece 10 is stably fixed through the small-end support member 5 and the large-end support member 6, it is subjected to finishing work for precision work of the large inner diameter and the small end inner diameter do.

The small-end support member 5 includes a small-end support 51 fitted to the stationary plate 4 and adapted to support the small-end portion of the small-end support member 5, And support bolts 53 screwed to the small-end support brackets 52 so that ends of the support bolts 53 are in contact with both side surfaces of the small-end support brackets 52, .

That is, the small end portion is supported on the bottom surface and both side surfaces through the support bolt 52 and the small end support body 51.

At this time, the pinhole of the small end portion is exposed toward the top in an open state, so that the processing tool 21 can stably perform the machining operation of the small end portion.

The large supporting member 6 includes a large supporting member 61 provided on the fixing plate 4 and supporting the large end portion of the large supporting member 6, And a support bolt (62) having an interval between the fixing plate (4) and the large end support bolt (62) and supporting the other side surface of the large end, And a support pipe (64) rotatably fixed.

That is, the large end support 61, the large end support bolt 62, and the support bolt 63 support the large end portion on both the bottom surface and both sides.

Thus, the connecting rod workpiece is primarily supported and fixed via the small end support member 5 and the large end support member 6.

The large end support bolt 62 and the support bolt 63 may be formed in a hexagonal bolt head shape with a bolt head and may be formed in a cylindrical shape having a frictional surface It is most preferable that a cylindrical shape having a frictional surface and a hexagonal bolt head shape are used in combination.

The connecting rod processing jig 1 according to the present embodiment as described above is fixedly arranged on the upper end of the large-end support member 6 so as to be movable up and down in the fixing plate 4, , And a fixing plate (74) which is provided on the jig base plate (3) and is arranged and fixed in a vertical phase with a gap therebetween in parallel to the fixing plate (4) And a movable link (73) which is reciprocated in a close and spaced relation to press and support and fix the upper surface of the support plate (74).

That is, by supporting the large end portion of the connecting rod workpiece 10 in close contact with and supporting the connecting rod workpiece 10 via the support plate 74, the connecting rod workpiece 10 is prevented from flowing, do.

At this time, the support plate 74 is machined and passed through a circle having a dimension larger than that of the large end portion of the workpiece, so that the machining tool can enter the support plate 74 to perform the machining for aligning the large-end precision workpiece.

The fixing means 7 includes a fixed cylinder 71 fixed to the jig base plate 3 and a movable link 73 having one end connected to the end of the piston rod 72 of the fixed cylinder 71, And a support plate 74 fixed to the upper end of the fixed plate 4 so as to be movable upward and downward and elastically supported by an elastic spring.

That is, the support plate 74 is moved close to and away from the end portion in accordance with the movement of the movable link 73 fixed to the reciprocating piston rod 72 as the fixed cylinder 71 is driven So that it is pressed or supported or released from the upper part.

In this case, the support plate 74 presses the support plate 74 while the movable link 73 pushes the support plate 74 by the elastic spring, thereby fixing the upper surface of the large end portion of the workpiece.

On the other hand, in the fixing means 7, one end of the movable link 73 is rotatably fixed to the piston rod 72, and one end of the movable link 73 is rotatably connected to the fixed cylinder 71 It is preferable that the other end of the fixed support link 75 is rotatably coupled to the other end so as to perform a seesaw motion at both ends.

That is, when the fixed cylinder 71 is driven, the movable link 73 performs a seesaw motion so that the support plate 74 presses or releases the large end portion. When the movable link 73 is seated, The link 75 stably supports the movable link 73 so that the movable link 73 can stably move.

The fixing cylinder 71 is fixed to the support plate 8 fixed in the direction in which the fixing plate 4 is disposed in the jig base plate 3 and is fixed to the fixing plate 4, So that the position of the support plate 74 with respect to the support plate 10 can be stably secured.

The small end support member 5 is fitted to the small end support body 51 when the work is fastened to the jig while supporting the bottom end of the small end portion of the workpiece and the movable link 73 is engaged with the support plate 74, The small end support body 51 descends below the stationary plate 4 so that the small end inner diameter and the large end inner diameter can be machined.

The operation and effect of the connecting rod processing jig according to the present embodiment will be described in detail as follows.

Figs. 4 to 7 are views showing the use state of the connecting rod processing jig according to the present embodiment. When the connecting rod processing jig 1 according to the present embodiment is applied to process the connecting rod, A jig base plate 3 to which a fixing plate 4 having a small end support member 5 and a large end support member 6 suitable for the size and shape to be machined is coupled is fixed to the processing base plate 2 with bolts The small end portion is fixed to the small end support member 5 and the large end portion is first fixed to the large end support member 6. [

At this time, the upper surface of the pinhole of the small end portion is arranged to face the processing tool 21 disposed on the upper side.

When the connecting rod workpiece 10 is first fixed to the fixed plate 4 and the fixed cylinder 71 is driven, one end of the connecting rod rod member 72 is rotatably fixed to the end of the piston rod 72 While the movable link 73 seesaw motion, the support plate 74 moves close to the large end portion side while pressing the top of the large end portion in surface contact.

Accordingly, the remaining portions of the connecting rod workpiece 10 except the upper portion of the small end portion are firmly supported and stably disposed at the machining position.

When the disposition of the connecting rod workpiece 10 is completed as described above, a working process such as a work of attaching the sleeve to the pinhole of the small end portion is performed by applying a normal working process through the processing tool 21 do.

When the processing of the connecting rod is completed as described above, the processing tool 21 and the support plate 74 are returned to their original positions, and the small end support member 5 and the large end support member 6 The connecting rod workpiece 10 may be separated and the lane connecting rod workpiece 10 to be processed may be processed by sequentially applying the steps described above.

The connecting rod processing jig 1 according to the present embodiment having such a structure as described above is arranged such that when a suitable jig 1 is changed in accordance with the distance between the centers of the large end portion and the small end portions of the connecting rod to be machined, The configuration of the entire jig 1 may be replaced or the remaining components except for the machining base plate 22 may be replaced by replacing the replacement base plate 42 in the lower base plate 41, It is preferable to suitably apply it according to the field.

In other words, when the distance between the large end and the small end center is small 109 or smaller or larger than 195, it is preferable to process the remainder except for the machining base plate 22 and to process the large end and the small end center In the case of a medium type having an inter-axis distance of 109 to 195 or less, it is most preferable to replace and process the replacement base plate 42 as described above.

As described above, the connecting rod processing jig 1 according to the present embodiment is configured such that the connecting rod workpiece 10 forming the connecting rod is connected to the small end support member 5, the large end support member 6, 7 at a machining position of the machining base plate 22 in a stable and simultaneous manner.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the scope of the present invention as defined by the appended claims and their equivalents. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: Jig 10: Connecting rod workpiece
21: machining tool 22: machining base plate
3: jig base plate 4: fixing plate
41: lower base plate 42: replacement base plate
5: Small end support member 51: Small end support
52: Small end support bracket 53: Support bolt
6: large end support member 61: large end support member
62: large end support bolt 63: support bolt
64: Support tube 7: Fixing means
71: fixed cylinder 72: piston rod
73: movable link 74: supporting plate
75: Support link 8: Support plate

Claims (1)

A connecting rod work (10) having a small end having a pinhole into which a piston pin is inserted, a connecting rod work (10) coupled to the crankshaft via a bearing and having a large end to which the cap is engaged, 1. A processing jig, comprising:
A jig base plate 3 composed of a plate shaped plate placed on the upper part of the machining base plate 22 disposed at the machining position of the machining apparatus;
A fixing plate 4 composed of a 'plate' shaped plate which is arranged and fixed in a direction parallel to a position spaced vertically from the jig base plate 3;
A small end support member 5 provided on the surface of the fixing plate 4 for supporting the small end portion of the connecting rod workpiece 10 and an end support member for supporting the large end portion of the connecting rod workpiece 10 6);
A support plate 74 fixed to the upper end of the fixed plate 4 so as to be movable up and down and resiliently supported by an elastic spring and a support plate 74 fixed to the jig base plate 3 And is reciprocally moved in a direction perpendicular to the fixed plate 4 so as to be vertically spaced apart from and parallel to the fixed plate 4 and close and spaced in the direction of the large end support member 6 to closely contact the upper surface of the support plate 74, And fixing means (7) having a movable link (73) adapted to support and fix;
The small-end support member (5)
A small end support bracket 51 fitted to the fixing plate 4 and adapted to support the small end portion and a small end support bracket disposed at an interval to accommodate the small end portion of the fixing plate 4 And a support bolt (53) threadedly engaged with the small end support bracket (52), and the end of the support bolt (53) adapted to support both side surfaces of the small end portion in contact with each other.
The large-end support member (6)
A large end support bolt 62 provided on the fixing plate 4 and supporting one side surface of the large end, and a large end support bolt 62 provided on the fixing plate 4, And a supporting bolt (63) provided on the plate (4) and spaced apart from the large end supporting bolt (62) to support the other side surface of the large end and being in contact with the side surface of the large end, 64);
The fixing means (7)
A movable link 73 having one end connected to the end of the piston rod 72 of the fixed cylinder 71 and a fixed link 71 fixed to the fixed base plate 3, And a support plate (74) fixedly disposed on the upper portion of the large end support member (6) movably up and down and elastically supported by an elastic spring;
The above-mentioned fixing plate (4)
Shaped lower base plate 41 fixed to the jig base plate 3 in a vertical direction with a gap therebetween in a vertical direction and fixed to the upper portion of the lower base plate 41, And a plate-shaped replacement base plate (42) provided with an end support member (5) and the large end support member (6).
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Publication number Priority date Publication date Assignee Title
CN106078286A (en) * 2016-07-11 2016-11-09 平湖市品耀机器自动化有限公司 A kind of circular tube shaped work pieces process clamp mechanism
CN107470952A (en) * 2017-09-21 2017-12-15 安徽力成机械装备有限公司 A kind of connecting rod milling hydraulically operated fixture
CN110090987A (en) * 2019-06-03 2019-08-06 舟山嘉程机械有限公司 The processing unit (plant) of oilhole in gonnecting rod body
CN110193735A (en) * 2019-06-03 2019-09-03 邵东智能制造技术研究院有限公司 Pull body jacking positioning mechanism
CN110434646A (en) * 2019-08-05 2019-11-12 浙江奥利达气动工具股份有限公司 One kind four axis brill attacks center frock clamp
KR102053667B1 (en) * 2019-06-07 2019-12-09 진광복 Jig device for machining spindle head for machine tool
CN110732727A (en) * 2019-10-11 2020-01-31 丽水市盛裕机械制造有限公司 automatic cracking equipment for crank connecting rod
KR20230151166A (en) * 2022-04-25 2023-11-01 (주)성림엔지니어링 Apparatus for Machining Chain Link for Infinite
CN117773618A (en) * 2024-01-24 2024-03-29 山东鲁联机械制造有限公司 Mechanical processing equipment for engine connecting rod

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JPS6335540U (en) * 1986-08-25 1988-03-07
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106078286A (en) * 2016-07-11 2016-11-09 平湖市品耀机器自动化有限公司 A kind of circular tube shaped work pieces process clamp mechanism
CN107470952A (en) * 2017-09-21 2017-12-15 安徽力成机械装备有限公司 A kind of connecting rod milling hydraulically operated fixture
CN110090987A (en) * 2019-06-03 2019-08-06 舟山嘉程机械有限公司 The processing unit (plant) of oilhole in gonnecting rod body
CN110193735A (en) * 2019-06-03 2019-09-03 邵东智能制造技术研究院有限公司 Pull body jacking positioning mechanism
KR102053667B1 (en) * 2019-06-07 2019-12-09 진광복 Jig device for machining spindle head for machine tool
CN110434646A (en) * 2019-08-05 2019-11-12 浙江奥利达气动工具股份有限公司 One kind four axis brill attacks center frock clamp
CN110732727A (en) * 2019-10-11 2020-01-31 丽水市盛裕机械制造有限公司 automatic cracking equipment for crank connecting rod
CN110732727B (en) * 2019-10-11 2020-10-20 诸暨企周企业管理有限公司 Automatic cracking equipment for crank connecting rod
KR20230151166A (en) * 2022-04-25 2023-11-01 (주)성림엔지니어링 Apparatus for Machining Chain Link for Infinite
KR102629143B1 (en) 2022-04-25 2024-01-25 (주)성림엔지니어링 Apparatus for Machining Chain Link for Infinite
CN117773618A (en) * 2024-01-24 2024-03-29 山东鲁联机械制造有限公司 Mechanical processing equipment for engine connecting rod
CN117773618B (en) * 2024-01-24 2024-05-28 山东鲁联机械制造有限公司 Mechanical processing equipment for engine connecting rod

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