KR101740318B1 - Hydraulic pump nut ring stopper production methods and pultrusion equipment - Google Patents

Hydraulic pump nut ring stopper production methods and pultrusion equipment Download PDF

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Publication number
KR101740318B1
KR101740318B1 KR1020150145222A KR20150145222A KR101740318B1 KR 101740318 B1 KR101740318 B1 KR 101740318B1 KR 1020150145222 A KR1020150145222 A KR 1020150145222A KR 20150145222 A KR20150145222 A KR 20150145222A KR 101740318 B1 KR101740318 B1 KR 101740318B1
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KR
South Korea
Prior art keywords
raw material
upper edge
shape
conformity
presses
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KR1020150145222A
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Korean (ko)
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KR20170045546A (en
Inventor
박홍수
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하은테크(주)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/06—Dies; Selection of material therefor; Cleaning thereof with adjustable section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00—Cooling, heating or lubricating drawing material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

A method of manufacturing a nut pump ring stopper according to the present invention is a method of manufacturing a nut pump ring stopper which contacts an upper surface of a raw material 10 and presses an upper surface thereof and rotates in conformity with a traveling direction of a raw material 10, (100); A pair of side inserting portions 200 contacting both sides of the raw material 10 to press both sides thereof and rotate in conformity with the advancing direction of the raw material 10 to thereby perform pulling in both sides; A lower inlet portion 300 that presses the lower surface of the raw material 10 and presses the lower surface of the raw material 10 and rotates in conformity with the advancing direction of the raw material 10 to thereby perform pulling-down of the lower surface; Is positioned between the upper surface inlet portion 100 and the side inlet portion 200 and presses the upper edge of the raw material 10 and rotates in conformity with the traveling direction of the raw material 10, And a pair of upper edge engaging portions 400 for performing pulling-in of the upper edge of the workpiece 10, wherein an upper edge engaging portion 400 for pressing the upper edge of the workpiece 10 is formed, , A right angle, or a polygonal shape; The upper edge engaging portion 400 may further include a pressure regulating device for regulating a force for pressing the upper edge engaging portion 400 toward the raw material side, Wherein the upper edge pull-in part (400) is formed in an elliptical shape and has a pull angle adjustment for determining a shape of a portion contacting the upper edge of the raw material, A step (A) of inserting the raw material (10) of a plate shape into a raw material hydraulic pump nut ring stopper drawing machine; A raw material drawing step (B) in which the shaped workpiece is drawn by the hydraulic pump nut ring stopper draw-out molding machine after the step (A) of inserting the raw material into a hydraulic pump nut ring stopper draw-out molding machine; A molded body cutting step (C) for cutting the shape-processed molded body to a desired length after the raw material drawing step (B); A hole forming step (D) of forming a hole penetrating the upper surface and the lower surface of the molded body after the molded body cutting step (C); And a surface processing step (E) of polishing the entire surface including the end face of the molded body cut in the compact cutting step (C).

Description

Technical Field [0001] The present invention relates to a hydraulic pump nut ring stopper manufacturing method and a pultrusion apparatus,

The present invention is a result of research carried out by the Ministry of Commerce, Industry and Energy and the Korea Industrial Technology Development Institute as a region-specific industry development project.
The present invention relates to a method of manufacturing a hydraulic pump nut ring stopper which can reduce the loss of material by complementing the disadvantages of material loss and long manufacturing time through conventional material cutting, roughing, finishing, finishing, NC drilling and boring processes, And more particularly, to a method of manufacturing a hydraulic pump nut ring stopper using a draw-forming method capable of shortening a manufacturing time and a drawing and forming apparatus.

As is well known, the drawing process is a plastic working method widely used for producing products such as rods, wire rods and pipes, and is mainly used to produce long-length products having a certain cross-section.

In recent years, machine parts with complicated cross-sectional shapes have been produced through the drawing process and have been applied to various fields such as machinery, electric / electronic, IT, and advanced robots.

In the past, products with complicated cross-sectional shapes were mainly produced by machining or hot extrusion.

However, in the case of machining, there are problems such as deterioration in productivity and mechanical properties, and material loss due to excessive chips.

Accordingly, it is possible to perform net shape forming by manufacturing the product through the cold drawing process, reduce the loss of the material, improve the dimensional accuracy, reduce the tool cost, and mass production.

The nut ring stopper is a key component used in the reduction gear of a heavy equipment driving motor assembly. It is a core part that permanently supports the center shaft and shaft rotation load (torque) of the motor reducer part and determines the rotation axis of the whole frame of the equipment.

Since the lifetime of the traveling motor is determined by the continuous rotation load and vibration, the surface roughness of the component is very important in order to suppress the vibration at the time of traveling as much as possible.

The conventional production process of such a nut ring stopper is produced by a total of six steps of machining, as shown in Fig.

Nut ring stoppers produced through cutting, roughing, finishing, finishing, NC drilling and boring processes have a large amount of machining and material loss due to machining.

In the case of many machining, there is a disadvantage of low productivity, and in the case of a nut ring stopper, the productivity is 13.5 ~ 17MH / EA.

Therefore, there is a need for a production process capable of reducing material loss so as to increase productivity significantly.

KR Patent Registration No. 10-1258004 B1

KR Patent Registration No. 10-1398525 B1

KR Patent Registration No. 10-0807274 B1

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems of the prior art.

Specifically, the object of the present invention is to reduce the loss of materials and shorten the production time by complementing the disadvantages of material loss and long manufacturing time through the conventional material cutting, roughing, finishing, finishing, NC drilling and boring processes The present invention provides a method of manufacturing a hydraulic pump nut ring stopper using a draw-forming method and a drawing and forming apparatus.

In order to accomplish the above object, the present invention provides a method for manufacturing a nut ring stopper of a hydraulic pump, which is in contact with an upper surface of a raw material (10) An upper surface inlet portion 100 for carrying out the above-described operation; A pair of side inserting portions 200 contacting both sides of the raw material 10 to press both sides thereof and rotate in conformity with the advancing direction of the raw material 10 to thereby perform pulling in both sides; A lower inlet portion 300 that presses the lower surface of the raw material 10 and presses the lower surface of the raw material 10 and rotates in conformity with the advancing direction of the raw material 10 to thereby perform pulling-down of the lower surface; Is positioned between the upper surface inlet portion 100 and the side inlet portion 200 and presses the upper edge of the raw material 10 and rotates in conformity with the traveling direction of the raw material 10, And a pair of upper edge engaging portions 400 for performing pulling-in of the upper edge of the workpiece 10, wherein an upper edge engaging portion 400 for pressing the upper edge of the workpiece 10 is formed, , A right angle, or a polygonal shape; The upper edge engaging portion 400 may further include a pressure regulating device for regulating a force for pressing the upper edge engaging portion 400 toward the raw material side, Wherein the upper edge pull-in part (400) is formed in an elliptical shape and has a pull angle adjustment for determining a shape of a portion contacting the upper edge of the raw material, A step (A) of inserting the raw material (10) of a plate shape into a raw material hydraulic pump nut ring stopper drawing machine; A raw material drawing step (B) in which the shaped workpiece is drawn by the hydraulic pump nut ring stopper draw-out molding machine after the step (A) of inserting the raw material into a hydraulic pump nut ring stopper draw-out molding machine; A molded body cutting step (C) for cutting the shape-processed molded body to a desired length after the raw material drawing step (B); A hole forming step (D) of forming a hole penetrating the upper surface and the lower surface of the molded body after the molded body cutting step (C); And a surface processing step (E) of polishing the entire surface including the end face of the molded body cut in the compact cutting step (C).

INDUSTRIAL APPLICABILITY As described above, the present invention adopts the draw-forming method and has the effect of minimizing the loss of material and shortening the manufacturing time in manufacturing the hydraulic pump nut ring stopper.

1 is an exemplary view showing a manufacturing process of a conventional nut ring stopper;
2 is a flowchart of a method of manufacturing a hydraulic pump nut ring stopper according to an embodiment of the present invention;
3 is an explanatory view showing a method of manufacturing a hydraulic pump nut ring stopper according to an embodiment of the present invention;
4 is a view showing a hydraulic pump nut ring stopper drawing and forming apparatus according to an embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited by the scope of the present invention.

Referring to FIG. 2, the method for manufacturing a nut pump ring stopper according to the present invention includes: a step (A) of inserting a raw material drawing die into which a raw material 10 in the form of a plate is inserted into a draw forming machine; A raw material drawing step (B) in which the formed workpiece is drawn by the drawing machine after the raw material drawing machine inserting step (A); A molded body cutting step (C) for cutting the shape-processed molded body to a desired length after the raw material drawing step (B); A hole forming step (D) of forming a hole penetrating the upper surface and the lower surface of the molded body after the molded body cutting step (C); And a surface machining step (E) of polishing the entire surface including the end face of the formed body cut in the compact cutting step (C).

Specifically, as shown in FIGS. 2 and 3, a raw material drawing apparatus insertion step (A) for inserting a raw material of a rectangular plate shape into a draw forming apparatus is performed. At this time, It is preferable to further include a raw material heating step (A1) for heating the raw material to soften the raw material, thereby weakening the rigidity of the raw material.

Next, the raw material drawing step (B), in which the formed workpiece is drawn by the draw-out molding machine after the step (A) of inserting the raw material drawing machine, is performed by pressing the raw material (10) The present invention pushes both ends of the upper edge and pulls out the shape of the desired molded body as shown in FIG.

Next, a hole forming step (D) for forming a hole passing through the upper surface and the lower surface of the molded body through a molded body cutting step (C) for cutting the shaped molded body to a desired length after the drawing step (B) Thereafter, the drawing process is terminated through a surface processing step (E) of grinding and processing the entire surface including the end face of the formed article cut in the step (C) of cutting the compact.

As shown in Fig. 4, the hydraulic pump nut ring stopper for this drawing process contacts the upper surface of the raw material 10, presses the upper surface thereof, and rotates in conformity with the advancing direction of the raw material 10, An upper surface inlet portion 100 for performing a pulling-in operation; A pair of side inserting portions 200 contacting both sides of the raw material 10 to press both sides thereof and rotate in conformity with the advancing direction of the raw material 10 to thereby perform pulling in both sides; A lower inlet portion 300 that presses the lower surface of the raw material 10 and presses the lower surface of the raw material 10 and rotates in conformity with the advancing direction of the raw material 10 to thereby perform pulling-down of the lower surface; Is positioned between the upper surface inlet portion 100 and the side inlet portion 200 and presses the upper edge of the raw material 10 and rotates in conformity with the traveling direction of the raw material 10, And a pair of upper edge engaging portions 400 for performing pulling-in of the upper edge of the upper corner edge.

4, the upper surface inlet portion 100 and the lower surface inlet portion 300, which are pressed against the upper and lower ends of the raw material, are located at the upper and lower ends of the raw material, respectively, A pair of side inlet portions 200 for pressing both side surfaces of the raw material are made to abut on both side surfaces of the raw material so that the raw raw material is pressed and pulled out from above,

4, an upper corner recess 400 for pressing the upper edge of the raw material 10 is additionally formed between the upper surface inlet 100 and the side inlet 200, The upper end edge can be a circular arc shape as shown in FIG. 4, but can be drawn in a rectangular or polygonal shape.

In this case, when a rectangular or polygonal shape is taken, the upper edge engaging portion 400 for pulling out such a shape has a shape in which the surface in contact with the raw material 10 takes such a rectangular or polygonal shape, .

The top drawer 100, the side drawer 200, the bottom drawer 300 and the top edge drawer 400 may be of a rotary type that takes the shape of each individual roller and rotates, It is also possible to take the form of a fixed draw-out molding machine in which the respective draw-in parts are connected and the raw material is drawn through the narrow outlet without rotation of the draw-in part.

The upper edge engaging portion 400 may further include a pressure regulating device for regulating a force for urging the upper edge engaging portion 400 toward the raw material side so that the shape of the top edge can be adjusted. The cutting edge of the upper edge engaging portion 400 is formed in an oval shape so that the pull angle for adjusting the shape of the portion contacting the upper edge of the raw material can be adjusted, It is possible to mold it into a shape.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

10: raw material
100: upper surface inlet portion
200: side inlet
300: lower inlet
400: Corner inlet

Claims (5)

An upper surface inlet portion 100 which is in contact with an upper surface of the raw material 10 and presses the upper surface of the raw material 10 and rotates in conformity with the advancing direction of the raw material 10 to thereby perform pulling-in of the upper surface;
A pair of side inserting portions 200 contacting both sides of the raw material 10 to press both sides thereof and rotate in conformity with the advancing direction of the raw material 10 to thereby perform pulling in both sides;
A lower inlet portion 300 that presses the lower surface of the raw material 10 and presses the lower surface of the raw material 10 and rotates in conformity with the advancing direction of the raw material 10 to thereby perform pulling-down of the lower surface;
Is positioned between the upper surface inlet portion 100 and the side inlet portion 200 and presses the upper edge of the raw material 10 and rotates in conformity with the traveling direction of the raw material 10, And a pair of upper edge engaging portions 400 for performing pulling-in of the upper edge of the upper edge engaging portion 400,
A top edge recess 400 for pressing the top edge of the blank 10 is configured so that the top edge is drawn in the shape of an arc, a right angle, or a polygon;
The upper edge engaging portion 400 may further include a pressure regulating device for regulating a force for pressing the upper edge engaging portion 400 to the raw material side so that the shape of the upper edge can be adjusted to be pulled out;
Wherein the upper edge pull-in part (400) is formed in an elliptical shape and has a pull angle adjustment for determining a shape of a portion contacting the upper edge of the raw material, A step (A) of inserting the raw material (10) of a plate shape into a raw material hydraulic pump nut ring stopper drawing machine;
A raw material drawing step (B) in which the shaped workpiece is drawn by the hydraulic pump nut ring stopper draw-out molding machine after the step (A) of inserting the raw material into a hydraulic pump nut ring stopper draw-out molding machine;
A molded body cutting step (C) for cutting the shape-processed molded body to a desired length after the raw material drawing step (B);
A hole forming step (D) of forming a hole penetrating the upper surface and the lower surface of the molded body after the molded body cutting step (C); And
And a surface machining step (E) of polishing the entire surface including the end face of the compact cut in the compact cutting step (C). The method according to claim 1,
The step (A) of inserting the raw material into the hydraulic pump nut ring stopper draw-out molding machine comprises heating the raw material before the step (A) of inserting the raw material into the hydraulic pump nut ring stopper draw-out molding machine to soften the raw material Further comprising a raw material heating step (A1). An upper surface inlet portion 100 which is in contact with an upper surface of the raw material 10 and presses the upper surface of the raw material 10 and rotates in conformity with the advancing direction of the raw material 10 to thereby perform pulling-in of the upper surface;
A pair of side inserting portions 200 contacting both sides of the raw material 10 to press both sides thereof and rotate in conformity with the advancing direction of the raw material 10 to thereby perform pulling in both sides;
A lower inlet portion 300 that presses the lower surface of the raw material 10 and presses the lower surface of the raw material 10 and rotates in conformity with the advancing direction of the raw material 10 to thereby perform pulling-down of the lower surface;
Is positioned between the upper surface inlet portion 100 and the side inlet portion 200 and presses the upper edge of the raw material 10 and rotates in conformity with the traveling direction of the raw material 10, And a pair of upper edge engaging portions 400 for performing pulling-in of the upper edge of the upper edge engaging portion 400,
A top edge recess 400 for pressing the top edge of the blank 10 is configured so that the top edge is drawn in the shape of an arc, a right angle, or a polygon;
The upper edge engaging portion 400 may further include a pressure regulating device for regulating a force for pressing the upper edge engaging portion 400 to the raw material side so that the shape of the upper edge can be adjusted to be pulled out;
Wherein the upper edge engaging portion (400) is formed in an elliptical shape and has a pull angle adjustment for determining a shape of a portion contacting the upper edge of the workpiece.
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KR1020150145222A 2015-10-19 2015-10-19 Hydraulic pump nut ring stopper production methods and pultrusion equipment KR101740318B1 (en)

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KR1020150145222A KR101740318B1 (en) 2015-10-19 2015-10-19 Hydraulic pump nut ring stopper production methods and pultrusion equipment

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KR1020150145222A KR101740318B1 (en) 2015-10-19 2015-10-19 Hydraulic pump nut ring stopper production methods and pultrusion equipment

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KR101740318B1 true KR101740318B1 (en) 2017-05-29

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100270174B1 (en) * 1998-04-03 2000-10-16 임진수 Manufacturing process of square nut
KR101137158B1 (en) * 2011-12-29 2012-04-20 (주) 금영이티에스 Drawing type shift shatft for automobile transmission and manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100270174B1 (en) * 1998-04-03 2000-10-16 임진수 Manufacturing process of square nut
KR101137158B1 (en) * 2011-12-29 2012-04-20 (주) 금영이티에스 Drawing type shift shatft for automobile transmission and manufacturing method

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