CN110369603A - A kind of coarse pitch thickness carrier bar secondary punching technique - Google Patents
A kind of coarse pitch thickness carrier bar secondary punching technique Download PDFInfo
- Publication number
- CN110369603A CN110369603A CN201910669673.9A CN201910669673A CN110369603A CN 110369603 A CN110369603 A CN 110369603A CN 201910669673 A CN201910669673 A CN 201910669673A CN 110369603 A CN110369603 A CN 110369603A
- Authority
- CN
- China
- Prior art keywords
- carrier bar
- away
- secondary punching
- thick
- hole
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses a kind of coarse pitch thickness carrier bar secondary punching techniques, comprise the following steps that step 1, roughing；Step 2, heat treatment；Step 3, secondary punching；The technique carries out pre-perforated before thick carrier bar is heat-treated, and the pre-perforated hole heart away from be less than design value the hole heart away from, make thick carrier bar in the hole heart of expanded by heating latter two circular hole away from close to design value, make punching machine in the hole heart of secondary punching latter two circular hole away from design value can be reached, the hardness of thick carrier bar can either be made to increase, it in turn avoids causing the expansion of thick carrier bar to make the hole heart between circular hole away from inaccurate due to heat treatment, the process flow is simple, reduce traditional handicraft need to by numerical control device to two hole hearts away from the operation modified, improve processing efficiency and machining accuracy, it saves process time and reduces processing charges.
Description
Technical field
The present invention relates to thick carrier bar processing technique field, in particular to a kind of coarse pitch thickness carrier bar secondary punching technique.
Background technique
When at present to thick chain board ends punching, generally can first it be punched out on thick carrier bar according to standard value, in order to improve
The hardness of thick carrier bar needs to be heat-treated thick carrier bar, but after post-processing, is easy to cause thick carrier bar temperature distortion,
The long growth between two holes of plate is set to result in the need for devoting a tremendous amount of time so that numerical control device device to hole be needed to be modified,
Processing efficiency is low, and fund cost is high.
Summary of the invention
The object of the present invention is to provide a kind of coarse pitch thickness carrier bar secondary punching techniques.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of coarse pitch thickness carrier bar secondary punching technique, comprises the following steps that
Step 1, roughing: beating reserved aperture to the both ends of thick carrier bar, makes the hole heart between two holes away from less than standard design value；
Step 2, heat treatment: the thick carrier bar that step 1 obtains is heat-treated, reaches its hardness between 36-42；
Step 3, secondary punching: carrying out secondary punching to the carrier bar after heat treatment, makes the hole heart on carrier bar between two holes away from reaching
Design value.
Preferably, the thickness carrier bar is medium carbon alloy steel.
Preferably, the heat treatment process is that will be placed in 860 degree of automatic quenching mesh-belt furnaces by rough machined thick carrier bar
It is interior, the duration about 2 hours, oil quenching is then carried out, then be placed in 480 degree of automatic meshbeltfurnace and be tempered with thick carrier bar, held
It the continuous time about 2.5 hours, finally takes out in merging air and is cooled down, until thick chain plate temperature reaches room temperature.
Preferably, the punch diameter of step 1 punching machine is less than the punch diameter of step 3 punching machine.
The utility model has the advantages that the technique carries out pre-punched hole before thick carrier bar is heat-treated, and the hole heart of pre-punched hole is set away from being less than
The hole heart of evaluation is away from making thick carrier bar in the hole heart of expanded by heating latter two circular hole away from close to design value, can making the thickness chain piece
Hardness after heat treatment increases, and when guarantee secondary punching, punching surplus is uniform, and the euphotic belt in aperture is enable to reach 90%
More than, make punching machine in the hole heart of second of punching latter two circular hole away from design value can be reached, the significant surface between axis and carrier bar
Product deduction, improves the service life of degree of firmly installing and chain, after chain piece comes from same punching die and chain is made,
Two chain pairings use, and can be improved the consistency that chain syn-chro-step uses.
The process flow is simple, reduce traditional handicraft need to by numerical control device to two hole hearts away from the behaviour modified
Make, improve processing efficiency and machining accuracy, saves process time and delivery duration, while reducing processing charges.
Specific embodiment
As described below is only the preferred embodiment of the present invention, and protection scope is not limited merely to the embodiment, all to belong to
Protection scope of the present invention should belong in technical solution under thinking of the present invention.Simultaneously it should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Embodiment one: a kind of coarse pitch thickness carrier bar secondary punching technique comprises the following steps that step 1, roughing: to thickness
Reserved aperture is beaten at the both ends of carrier bar, and thick carrier bar is medium carbon alloy steel, makes the hole heart between two holes away from less than standard design value；Step
2, it is heat-treated: the thick carrier bar that step 1 obtains is heat-treated, heat treatment process is will be by rough machined thick carrier bar merging
In 860 degree of automatic quenching mesh-belt furnaces, the duration about 2 hours, oil quenching is then carried out, then be placed in 480 degree automatic with thick carrier bar
It is tempered in meshbeltfurnace, the duration about 2.5 hours, finally takes out in merging air and cooled down, until thick chain plate temperature
Reach room temperature, reaches its hardness between 36-42；Step 3, secondary punching: secondary punching is carried out to the carrier bar after heat treatment, is made
For the hole heart on carrier bar between two holes away from design value is reached, the formed punch that the punch diameter of step 1 punching machine is less than step 3 punching machine is straight
Diameter.
Wherein thick carrier bar is cleaned before being tempered, the greasy dirt of thick chain plate surface is removed, thus when reducing tempering
The dense smoke of generation reduces the pollution to environment.
Embodiment two, the difference between this embodiment and the first embodiment lies in: select thickness >=10mm of thick carrier bar, and two holes it
Between the hole heart away from >=400mm when, reserved aperture is beaten to the both ends of thick carrier bar, the hole heart between two holes compared to design value away from shortening
Between 0.8-1mm, after Overheating Treatment and secondary punching, the hole heart on carrier bar between two holes is away from reaching standard design value.
Embodiment three, the difference between this embodiment and the first embodiment lies in: select the thickness < 10mm of thick carrier bar, and two holes it
Between 250mm≤hole heart away from < 400mm when, reserved aperture is beaten to the both ends of thick carrier bar, the hole heart between two holes is away from compared to setting
Evaluation shortens between 0.5-0.6, and after Overheating Treatment and secondary punching, the hole heart on carrier bar between two holes is set away from standard is reached
Evaluation.
The technique carries out pre-punched hole before thick carrier bar is heat-treated, and the hole heart of pre-punched hole is away from the hole heart for being less than design value
Away from making thick carrier bar in the hole heart of expanded by heating latter two circular hole away from the thickness chain piece close to design value, can be made after heat treatment
Hardness increase, and guarantee secondary punching when, punching surplus it is uniform, so that the euphotic belt in aperture is reached 90% or more, make punching machine
In the hole heart of second of punching latter two circular hole away from that can reach design value, the effective area deduction between axis and carrier bar is improved
The service life of degree of firmly installing and chain is matched after chain piece comes from same punching die and chain is made in two chains
To using, the consistency that chain syn-chro-step uses can be improved.
Present invention process process is simple, reduce traditional handicraft need to by numerical control device to two hole hearts away from being modified
Operation improves processing efficiency and machining accuracy, saves process time and delivery duration, while reducing processing charges.
Claims (4)
1. a kind of coarse pitch thickness carrier bar secondary punching technique, which is characterized in that comprise the following steps that
Step 1, roughing: beating reserved aperture to the both ends of thick carrier bar, makes the hole heart between two holes away from less than standard design value；
Step 2, heat treatment: the thick carrier bar that step 1 obtains is heat-treated, reaches its hardness between 36-42；
Step 3, secondary punching: carrying out secondary punching to the carrier bar after heat treatment, makes the hole heart on carrier bar between two holes away from reaching
Design value.
2. a kind of coarse pitch thickness carrier bar secondary punching technique according to claim 1, which is characterized in that it is described thickness carrier bar be
Medium carbon alloy steel.
3. a kind of coarse pitch thickness carrier bar secondary punching technique according to claim 1, which is characterized in that the heat treatment work
Skill is that will be placed in 860 degree of automatic quenching mesh-belt furnaces by rough machined thick carrier bar, the duration about 2 hours, then carries out oil
It quenches, then is placed in 480 degree of automatic meshbeltfurnace and is tempered with thick carrier bar, the duration about 2.5 hours, it is empty finally to take out merging
It is cooled down in gas, until thick chain plate temperature reaches room temperature.
4. a kind of coarse pitch thickness carrier bar secondary punching technique according to claim 1, which is characterized in that step 1 punching machine
Punch diameter is less than the punch diameter of step 3 punching machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669673.9A CN110369603A (en) | 2019-07-24 | 2019-07-24 | A kind of coarse pitch thickness carrier bar secondary punching technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669673.9A CN110369603A (en) | 2019-07-24 | 2019-07-24 | A kind of coarse pitch thickness carrier bar secondary punching technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110369603A true CN110369603A (en) | 2019-10-25 |
Family
ID=68255311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910669673.9A Pending CN110369603A (en) | 2019-07-24 | 2019-07-24 | A kind of coarse pitch thickness carrier bar secondary punching technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110369603A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263169A (en) * | 1999-02-11 | 2000-08-16 | 承德钢铁集团有限公司 | Low-carbon microalloy steel and method for producing chain and link joint by using one |
| US20070060429A1 (en) * | 2005-09-15 | 2007-03-15 | Takuma Ono | Chain and method for blanking hole in chain plate |
| JP4425209B2 (en) * | 2005-11-29 | 2010-03-03 | 株式会社椿本チエイン | Manufacturing method of silent chain for engine timing |
| CN102343388A (en) * | 2010-07-23 | 2012-02-08 | 金建铭 | Hot extrusion manufacturing method for multi-hole circular taper hole anchor plate |
| CN103639676A (en) * | 2013-12-25 | 2014-03-19 | 安徽日升机械制造有限公司 | Machining method of crescent shear blade with high wear resistance and impact resistance |
| CN105290309A (en) * | 2015-11-05 | 2016-02-03 | 安徽黄山中友链条制造有限公司 | Chain plate hole machining method and hole extrusion device thereof |
-
2019
- 2019-07-24 CN CN201910669673.9A patent/CN110369603A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263169A (en) * | 1999-02-11 | 2000-08-16 | 承德钢铁集团有限公司 | Low-carbon microalloy steel and method for producing chain and link joint by using one |
| US20070060429A1 (en) * | 2005-09-15 | 2007-03-15 | Takuma Ono | Chain and method for blanking hole in chain plate |
| JP4425209B2 (en) * | 2005-11-29 | 2010-03-03 | 株式会社椿本チエイン | Manufacturing method of silent chain for engine timing |
| CN102343388A (en) * | 2010-07-23 | 2012-02-08 | 金建铭 | Hot extrusion manufacturing method for multi-hole circular taper hole anchor plate |
| CN103639676A (en) * | 2013-12-25 | 2014-03-19 | 安徽日升机械制造有限公司 | Machining method of crescent shear blade with high wear resistance and impact resistance |
| CN105290309A (en) * | 2015-11-05 | 2016-02-03 | 安徽黄山中友链条制造有限公司 | Chain plate hole machining method and hole extrusion device thereof |
Non-Patent Citations (1)
| Title |
|---|
| 汪晓林等: "影响链板孔距的因素及其控制", 《影响链板孔距的因素及其控制》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101612700B (en) | Method for preparing seamless steel tubes made of martensite precipitation hardening stainless steel | |
| CN104759843B (en) | A kind of flange production technology | |
| CN103433278B (en) | A kind of LED industry mild steel precision cold-rolled steel band production method | |
| CN105463311B (en) | A kind of preparation method of cold-drawn high-precision | |
| CN101539163B (en) | Manufacturing method of anti-delayed fracture 16.9 grade bolt | |
| CN101265514A (en) | Composite heat treatment method for 30CrMnSiA steel thin wall spinning cylinder-shape element | |
| CN106670363A (en) | Manufacturing method for high-strength stainless steel forge piece | |
| CN111424150A (en) | SPHC hot-rolled pickled plate without transverse crease defect and production method thereof | |
| CN109266964A (en) | A kind of steel forgings production and processing technology | |
| CN113642210A (en) | Method for eliminating band-shaped structure in gear steel through heating process | |
| CN103464507A (en) | Production method for high-precision austenite seamless steel pipe | |
| CN1884602A (en) | Steel wire rod excellent in wire-drawability and fatigue property, and production method thereof | |
| CN105880934A (en) | Manufacturing method for high-precision cold-drawn inner-hole honed pipe | |
| CN104439935A (en) | Bolt manufacturing process | |
| CN101417384A (en) | Production method of low-carbon free-cutting steel | |
| CN1718771A (en) | Prehardening treatment method of NAK80 mould steel | |
| CN105220067A (en) | The resonant rod of the radio-frequency (RF) device production method of invar cold-heading silk | |
| CN104060081B (en) | Prevent the method that carburized gears heat treatment deformation is overproof | |
| CN100349691C (en) | Manufacture for casting low-alloy cold-working die steel and die steel thereby | |
| CN110369603A (en) | A kind of coarse pitch thickness carrier bar secondary punching technique | |
| CN1936032A (en) | On-line bright quenching and tempering method and production line of steel wire | |
| CN105316575A (en) | Cold-heading wire for resonance rod and production method thereof | |
| CN107755454A (en) | A kind of manufacture method of high-strength corrosion-resisting drawn tube for marine settings engineering | |
| CN109136746A (en) | A kind of bimetal bandsaw backing steel band and preparation method thereof | |
| CN110157979B (en) | Rolling method for improving surface quality of steel plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191025 |