CN110576139A - ball socket forging die set and forging process thereof - Google Patents

ball socket forging die set and forging process thereof Download PDF

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Publication number
CN110576139A
CN110576139A CN201910954717.2A CN201910954717A CN110576139A CN 110576139 A CN110576139 A CN 110576139A CN 201910954717 A CN201910954717 A CN 201910954717A CN 110576139 A CN110576139 A CN 110576139A
Authority
CN
China
Prior art keywords
forging
die
composite insulator
ball socket
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910954717.2A
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Chinese (zh)
Inventor
征大生
葛乃晨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RUGAO DASHENG LINE EQUIPMENT CO Ltd
Original Assignee
RUGAO DASHENG LINE EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RUGAO DASHENG LINE EQUIPMENT CO Ltd filed Critical RUGAO DASHENG LINE EQUIPMENT CO Ltd
Priority to CN201910954717.2A priority Critical patent/CN110576139A/en
Publication of CN110576139A publication Critical patent/CN110576139A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/02Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00Making hollow articles not covered by a single preceding sub-group
    • B21K21/08Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
    • B21K21/10Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs cone-shaped or bell-shaped articles, e.g. insulator caps

Abstract

The invention relates to a ball socket forging die and a forging process thereof, which are characterized in that: comprises a drawing die, a forging forming die and a demoulding ejector rod; the demolding ejector rod is arranged on the forging forming die; the specific forging process is as follows: s1: blanking and surface treatment; s2: heating; s3: removing oxide skin; s4: forging and forming; according to the invention, the upper die is matched with the lower die, so that the inner cavity of the ball socket of the composite insulator can be directly formed during forging, the use of materials can be greatly reduced, and the forged materials are saved; in addition, the high-pressure water tank is adopted in the forging process to remove the oxide layer on the surface of the composite insulator, so that the surface damage caused in the forging process can be reduced, and the defective rate is reduced; and a mold stripping ejector rod is arranged on the lower mold base, so that the insulator ball socket in the mold cavity can be conveniently and quickly taken out.

Description

Ball socket forging die set and forging process thereof
Technical Field
The invention relates to the field of composite insulator forging, in particular to a ball socket forging die set and a forging process thereof.
Background
the ball socket composite insulator hardware fitting of the composite insulator is a metal end at two ends of the composite insulator and is an important component of the composite insulator. The composite insulator consists of composite insulator hardware, a glass fiber drawing rod and silicon rubber;
for the composite insulator ball socket hardware, the current common processing method is to directly forge a round steel bar after heating or directly process the round steel, and only large-size raw materials can be selected, so that the problem of serious waste of the materials with large allowance is solved, and the processing difficulty is increased; the processing procedures are multiple, the manpower and material resources are wasted, and the product cost is high; in addition, since heating treatment is required during forging, surface oxidation may occur during heating, and the scale on the surface may destroy the surface structure after forming during forging, resulting in a high defective rate of products.
disclosure of Invention
The invention aims to solve the technical problem of providing a ball socket forging die and a forging process thereof, which can solve the problem that the material consumption is large because a subsequent hole opening mode is adopted instead of forging the inner cavities of ball sockets together in a die adopted in the forging of a common composite insulator; and the problem that the surface oxide skin of the blank is not removed in the common ball socket forging process, so that the composite insulator forging hardware has many surface defects.
in order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a ball socket forges mould group which innovation point lies in: comprises a drawing die, a forging forming die and a die stripping and material ejecting mechanism; the die-stripping and material-ejecting mechanism is arranged on the forging forming die;
the drawing die comprises an upper forging punch and a lower forging die; the upper forging punch is provided with a through hole along the vertical center, and the lower forging die comprises an outer die holder and an inner forging die core; the inner forging die core is arranged in the outer die holder and is connected with the outer die holder through a wedge-shaped surface structure; a forging cavity for accommodating the upper forging punch is formed in the center of the inner forging mold core; the upper forging punch head enters and exits the forging cavity of the lower forging die along the vertical direction to realize the stretching forging of the composite insulator ball socket;
the forging forming die comprises an upper die, a lower die and a die stripping and ejecting hole; the upper die and the lower die are both in cylindrical structures; a groove is formed in the center of the lower die along the horizontal direction, and a ball socket lower die cavity is formed in the groove; a mold ejection hole for accommodating mold ejection lifters is arranged below the lower mold ball socket lower mold cavity along the vertical direction; and a pair of guide holes is respectively formed in two sides of the upper groove of the lower die.
a forging process of a ball socket forging die set is characterized in that: the specific process steps are as follows:
s1: blanking and surface treatment: carbon steel is used as a raw material, so that the hardenability, the purity and the grain refinement of the steel are ensured; the surface of the cylindrical blank is subjected to grinding, polishing, barreling and oil removal treatment to remove the surface defects of the carbon steel; cutting the cylindrical blank to obtain a plurality of cylindrical composite insulator round bar units;
S2: heating: heating the cylindrical composite insulator round rod unit to 950-1050 ℃ by an intermediate frequency heating furnace; and keeping the temperature for 1 hour;
S3: descaling: placing the heated composite insulator round bar unit into special descaling equipment, and washing by a high-pressure water gun in the equipment to remove the surface scale;
S4: forging and forming: placing the composite insulator round bar unit subjected to scale removal into a die for forging and molding; forging the whole cylindrical composite insulator round bar unit into a specified blank specification, and punching a ball socket inner cavity on the round bar unit forged into a blank; then the forged blank is subjected to heat treatment and then naturally cooled to normal temperature.
The invention has the advantages that:
1) according to the invention, the upper die is matched with the lower die, so that the inner cavity of the ball socket of the composite insulator can be directly formed during forging, the use of materials can be greatly reduced, and the forged materials are saved; in addition, the high-pressure water tank is adopted in the forging process to remove the oxide layer on the surface of the composite insulator, so that the surface damage caused in the forging process can be reduced, and the defective rate is reduced; the lower die base is provided with a die ejecting mechanism, so that the insulator ball socket in the die cavity can be taken out quickly.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a main sectional view of a lower die of a forming die of a ball and socket forging die according to the present invention.
fig. 2 is a plan view of a lower die of a forming die of a ball and socket forging die according to the present invention.
fig. 3 is a main sectional view of a lower die of a drawing die of a ball and socket forging die according to the present invention.
Fig. 4 is a top view of a lower drawing die of the ball and socket forging die of the present invention.
FIG. 5 is a main sectional view of the upper die of the drawing die of the ball and socket forging die of the present invention
fig. 6 is a drawing of a structure of a knockout pin of the ball and socket forging die according to the present invention.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
The ball socket forging die set shown in fig. 1 to 6 comprises a drawing die 1, a forging forming die 2 and a die ejector rod 3; the demolding ejector rod 3 is arranged on the forging forming die 2.
The drawing die 1 includes an upper forging punch 11 and a lower forging die 12; the upper forging punch 11 is provided with a through hole along the vertical center, and the lower forging die 12 comprises an outer die holder 121 and an inner forging die core 122; the inner forging mold core 122 is arranged in the outer mold base 121, and the inner forging mold core 122 is connected with the outer mold base 121 through a wedge-shaped surface structure; the center of the inner forging mold core 122 is provided with a forging cavity for accommodating the upper forging punch 11; and the upper forging punch 11 enters and exits from the forging cavity of the lower forging die 12 along the vertical direction to realize the stretching forging of the composite insulator ball socket.
the forging forming die 2 comprises an upper die, a lower die 21 and a die-out thimble hole 22; the upper die and the lower die 21 are both in a cylindrical structure; a groove is formed in the center of the lower die 21 along the horizontal direction, and a ball socket lower die cavity 23 is formed in the groove; a mold stripping and ejecting hole 22 for accommodating the mold stripping and ejecting rod 3 is arranged below the ball socket lower mold cavity of the lower mold 21 along the vertical direction; two sides of the groove on the lower die 21 are respectively provided with a pair of guide holes.
A forging process of a ball socket forging die set comprises the following specific process steps:
s1: blanking and surface treatment: carbon steel is used as a raw material, so that the hardenability, the purity and the grain refinement of the steel are ensured; the surface of the cylindrical blank is subjected to grinding, polishing, barreling and oil removal treatment to remove the surface defects of the carbon steel; cutting the cylindrical blank to obtain a plurality of cylindrical composite insulator round bar units;
S2: heating: heating the cylindrical composite insulator round rod unit to 950-1050 ℃ by an intermediate frequency heating furnace; and keeping the temperature for 1 hour;
S3: descaling: placing the heated composite insulator round bar unit into special descaling equipment, and washing by a high-pressure water gun in the equipment to remove the surface scale;
S4: forging and forming: placing the composite insulator round bar unit subjected to scale removal into a die for forging and molding; forging the whole cylindrical composite insulator round bar unit into a specified blank specification, and punching a ball socket inner cavity on the round bar unit forged into a blank; then the forged blank is subjected to heat treatment and then naturally cooled to normal temperature.
it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. A ball socket forges mould group which characterized in that: comprises a drawing die, a forging forming die and a die stripping and material ejecting mechanism; the die-stripping and material-ejecting mechanism is arranged on the forging forming die;
The drawing die comprises an upper forging punch and a lower forging die; the upper forging punch is provided with a through hole along the vertical center, and the lower forging die comprises an outer die holder and an inner forging die core; the inner forging die core is arranged in the outer die holder and is connected with the outer die holder through a wedge-shaped surface structure; a forging cavity for accommodating the upper forging punch is formed in the center of the inner forging mold core; the upper forging punch head enters and exits the forging cavity of the lower forging die along the vertical direction to realize the stretching forging of the composite insulator ball socket;
The forging forming die comprises an upper die, a lower die and a die stripping and ejecting hole; the upper die and the lower die are both in cylindrical structures; a groove is formed in the center of the lower die along the horizontal direction, and a ball socket lower die cavity is formed in the groove; a mold ejection hole for accommodating mold ejection lifters is arranged below the lower mold ball socket lower mold cavity along the vertical direction; and a pair of guide holes is respectively formed in two sides of the upper groove of the lower die.
2. A forging process of the ball and socket forging die set of claim 1, wherein: the specific process steps are as follows:
S1: blanking and surface treatment: carbon steel is used as a raw material, so that the hardenability, the purity and the grain refinement of the steel are ensured; the surface of the cylindrical blank is subjected to grinding, polishing, barreling and oil removal treatment to remove the surface defects of the carbon steel; cutting the cylindrical blank to obtain a plurality of cylindrical composite insulator round bar units;
s2: heating: heating the cylindrical composite insulator round rod unit to 950-1050 ℃ by an intermediate frequency heating furnace; and keeping the temperature for 1 hour;
S3: descaling: placing the heated composite insulator round bar unit into special descaling equipment, and washing by a high-pressure water gun in the equipment to remove the surface scale;
S4: forging and forming: placing the composite insulator round bar unit subjected to scale removal into a die for forging and molding; forging the whole cylindrical composite insulator round bar unit into a specified blank specification, and punching a ball socket inner cavity on the round bar unit forged into a blank; then the forged blank is subjected to heat treatment and then naturally cooled to normal temperature.
CN201910954717.2A 2019-10-09 2019-10-09 ball socket forging die set and forging process thereof Pending CN110576139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910954717.2A CN110576139A (en) 2019-10-09 2019-10-09 ball socket forging die set and forging process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910954717.2A CN110576139A (en) 2019-10-09 2019-10-09 ball socket forging die set and forging process thereof

Publications (1)

Publication Number Publication Date
CN110576139A true CN110576139A (en) 2019-12-17

Family

ID=68814378

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910954717.2A Pending CN110576139A (en) 2019-10-09 2019-10-09 ball socket forging die set and forging process thereof

Country Status (1)

Country Link
CN (1) CN110576139A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548894B2 (en) * 1978-03-27 1980-12-09
CN202123188U (en) * 2011-06-24 2012-01-25 四川名齿齿轮制造有限公司 Large gear combination forging die
CN102989947A (en) * 2012-10-22 2013-03-27 如皋市大生线路器材有限公司 Compound insulator ball socket armor clamp forging and molding process
CN103909078A (en) * 2013-01-07 2014-07-09 苏州昆仑重型装备制造有限公司 Descaling machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548894B2 (en) * 1978-03-27 1980-12-09
CN202123188U (en) * 2011-06-24 2012-01-25 四川名齿齿轮制造有限公司 Large gear combination forging die
CN102989947A (en) * 2012-10-22 2013-03-27 如皋市大生线路器材有限公司 Compound insulator ball socket armor clamp forging and molding process
CN103909078A (en) * 2013-01-07 2014-07-09 苏州昆仑重型装备制造有限公司 Descaling machine

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