CN110434564A - A kind of manufacture craft of high intensity side's U-bolt - Google Patents
A kind of manufacture craft of high intensity side's U-bolt Download PDFInfo
- Publication number
- CN110434564A CN110434564A CN201910805021.3A CN201910805021A CN110434564A CN 110434564 A CN110434564 A CN 110434564A CN 201910805021 A CN201910805021 A CN 201910805021A CN 110434564 A CN110434564 A CN 110434564A
- Authority
- CN
- China
- Prior art keywords
- bolt
- rod column
- newel
- bent
- high intensity
- 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.)
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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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
- B21D7/162—Heating equipment
-
- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to a kind of high intensity side's U-bolt manufacture crafts, belong to technical field of mechanical processing；Including cutting thread, Heating and Bending Formation and non-oxidation heat treatment process；Heating and Bending Formation process: to part bent angle center two sidesRange heating, wherein R is angular radius in being bent, and d is the diameter of bolt, and A is part material elongation；The heating temperature of part is controlled in (Ac3+30 DEG C)-(Ac3+100 DEG C) range, wherein Ac3 is part material austenite transition temperature；The brake forming time is controlled in the case where guaranteeing the indeformable situation of bent angle in K × d seconds ranges, wherein K=1-1.3；Controlling cooling velocity is 80-120 DEG C/h.Prior art is compared, present invention optimizes high intensity side's U-bolt fabrication processings, improve high intensity side's U-bolt processing efficiency, reduce operator's labor intensity, without using dedicated hard alloy hand thread screw die, have saved cost.
Description
Technical field
The invention belongs to technical fields of mechanical processing, are related to a kind of high intensity side's U-bolt manufacture craft.
Background technique
High intensity side's U-bolt is the locking device (as shown in Figure 1) of my connection of company's product chassis girder and auxiliary girder,
Effect is to prevent vehicle when turning, weight bearing, deforms, is broken, needs a kind of high intensity side's U-bolt, and by
In the particularity of be locked design of part and shape, square U-bolt need to be designed to R10 curved transitions arc, but will increase high-strength
The risk of the manufacture difficulty of degree side's U-bolt and knee cracking.
It need to be high-tensile structural steel to reach the selected square U-bolt material of high-intensitive requirement, and heat treatment process need to be passed through
Reach required intensity.Currently, the process flow of mechanical processing industry processing high intensity side's U-bolt are as follows: brake forming → routine
Heat treatment → tapping, since such material also increases in the hardness that intensity improves material therewith after Overheating Treatment, according to this
Dedicated hard alloy hand thread screw die is needed when tapping after kind process flow heat treatment, difficulty of processing is big, and time-consuming.
Cost is reduced to improve high intensity side's U-bolt processing efficiency, it is necessary to be explored a kind of suitable for the U-shaped spiral shell in high intensity side
The process for making of bolt.
Summary of the invention
The purpose of the invention is to overcome the limitation of prior art, solve high intensity side's U-bolt processing efficiency is low, at
This high problem proposes a kind of high intensity side's U-bolt process for making.
The purpose of the present invention is what is be achieved through the following technical solutions.
A kind of manufacture craft of high intensity side's U-bolt, comprising the following steps:
(1) cutting thread；
(2) Heating and Bending Formation；
(3) non-oxidation is heat-treated.
Beneficial effect
The prior art is compared, U-bolt manufacture craft in high intensity side's proposed by the present invention optimizes the U-shaped spiral shell in high intensity side
Bolt fabrication processing improves high intensity side's U-bolt processing efficiency, operator's labor intensity is reduced, without using special
With hard alloy hand thread screw die, cost has been saved.
Detailed description of the invention
Fig. 1 is square U-bolt working state schematic representation；
Fig. 2 is a kind of device front view of side's U-bolt brake forming of the embodiment of the present invention；
Fig. 3 is a kind of device rearview of side's U-bolt brake forming；
Appended drawing reference: 1- part, 2- pedestal, 3- rotating disk, 4- newel, 5- support frame, 6- limiting device, 7- adjust spiral shell
Bolt, 8- rod column I, 9- rod column II, 10- vertical plate.
Specific embodiment
Process for making of the invention is described in detail combined with specific embodiments below.
Below to illustrate a kind of high intensity side's U-bolt manufacture craft for the 40Cr material for being bent interior angle R10, the present invention
Method the following steps are included:
(1) cutting thread, the step, by figure processing, can effectively solve existing method by this step using center lathe
It is middle to use specific purpose tool tapping flow operations person large labor intensity, the problem that processing efficiency is low, manufacturing cost is high；
(2) Heating and Bending Formation；
Existing bending and molding method can be used by spares bend into the U-shaped shape in the side for meeting specification requirement in this step；
Preferably, following processes can be used to realize: to part bent angle center two sidesRange
Heating；Wherein: R is angular radius in being bent, and d is the diameter of bolt, and A is part material elongation；The heating temperature of control part exists
In (Ac3+30 DEG C)-(Ac3+100 DEG C) range, wherein Ac3 is part material austenite transition temperature；Guaranteeing that bent angle is constant
The brake forming time is controlled in the case of shape in K × d seconds ranges；Wherein, 1.3 K=1-；Controlling cooling velocity is 80-120
DEG C/h.Can solve that high intensity side's U-bolt bending forming qualification rate is low and the manufacture difficulty of knee cracking.
Specifically, for this example using high intensity side's U-bolt of 40Cr material production bending interior angle R10, for control zero
The heating temperature of part is 810 DEG C -880 DEG C；Part bent angle center two sides 41-50mm range is heated；Guaranteeing that bent angle is constant
The brake forming time is controlled in the case of shape in 18-23s；Controlling cooling velocity is 80-120 DEG C/h.
(3) non-oxidation is heat-treated.
Salt bath quenching or other non-oxidation heat treatments can be used in the step, reaches needed for existing heat treatment process meeting
While the enhancing part material intensity arrived, guarantee that thread size precision is unaffected, during solving existing normative heat treatment
Screw thread conventional quenching method leads to the problem of oxide skin and causes thread size precision underproof.
Further, corner uniform force can ensure that by using the device of square U-bolt brake forming, bent angle is constant
Shape, and then the hardness of steel of guarantor's U-bolt corner.
A kind of device of side's U-bolt brake forming, including；Pedestal, rotating disk, newel, rod column I, rod column II, support
Frame；Pedestal is fixed plate, and rotating disk is attached achievable rotary motion, newel and rotating disk maintenance by bearing and pedestal
Connection, by support frame groove maintenance part one end, the part other end passes through the groove maintenance on newel and rod column I, rod column I
In the same horizontal line and parallel with part with II center of rod column, applying active force to rotating disk when brake forming turns round it
Movement drives part rotation, and part is bent under newel, rod column I, II synergy of rod column around newel equal diameter.Pass through
The restriction of rod column I ensure that part is indeformable in knee, and then ensure that the stiffness in U-bolt knee.
Preferably, being uniform force when making spares bend, groove is opened up on rod column II.
Preferably, to make part stress that position play not occur when being bent, rod column II is equipped with two pieces of protrusive boards, part is limited
In protrusive board.
Preferably, described device further includes vertical plate I and vertical plate II, I He of rod column to adapt to the processing of different model part
Rod column II is connect by bolt with vertical plate I and vertical plate II maintenance respectively, by the adjusting of bolt front-rear position, adjusts rod column I, rod
The center of column II and newel away from.The vertical plate being connected with rod column I can be both installed in rotating disk with maintenance, can also be installed with maintenance
In on pedestal.When being installed in rotating disk, rod column I and newel are rotated with rotating disk together, mistake of the rod column I in spares bend
The forced contact point of Cheng Zhongyu part is constant.When being mounted on the base, newel is rotated with rotating disk, and rod column I is curved in part
Constantly change in bent process with the forced contact point of part, gives inside support point by point from outer rim to spares bend position
Power.II position of rod column is constant always, and not with the rotation of rotating disk, change location overcomes torsion during spares bend always
Square provides the inside support force of part, guarantees that part is bent by angle is subscribed.Fig. 2 and structure shown in Fig. 3 are former using lever
Reason circumferentially pushes stock to drive the bending of rotating disk rotation realization part by stretching out a stock in rotating disk.It is not limited to
This, can also rotate the bending for realizing part by motor control rotating disk.
Preferably, described device further includes limiting device, when part end is seated in limit to simplify the determination of bending point
When the device of position, the point between rod column I and newel is bending point.
Preferably, the limiting device is equipped with muti-piece limit plate, it is respectively used to the determination of differently curved point, limit plate
Position can be seated in predeterminated position using movable connection method, such as by adjusting bolt maintenance, or pass through card slot maintenance etc..
Preferably, the limiting device is equipped with scale and limit plate, pass through mobile limit plate to different position of rule
Determination for differently curved point.If limit plate is equipped with groove, by sliding back and forth mobile position on limiting device both side plate
It sets, after limit plate is slided into predetermined position by the scale being located on side plate, by adjusting bolt maintenance.
As shown in Figure 2,3, a kind of device of U-bolt brake forming, including；Part 1, pedestal 2, rotating disk 3, newel
4, support frame 5, limiting device 6, adjusting bolt 7, rod column I 8, rod column II 9, vertical plate 10.Wherein, pedestal 2 is fixed plate, rotating disk
It is attached realization rotary motion by bearing and fixed plate, rod column I, II is connect by vertical plate and adjusting bolt with pedestal, and
Back-and-forth motion can be realized by adjusting bolt, to adjust the spacing with center intercolumniation, newel is connect with rotating disc fastener, work
Spares bend size is fixed by limiting device when making, applying active force to rotating disk makes it make rotary motion drive part rotation
Turn, part is bent under newel, rod column I, II synergy of rod column around newel equal diameter.
Pedestal 2 is fixed, is connect with rotating disk 3 by bearing, plays connection, supporting role；It will be stood by welding manner
Plate 10 is fixed on pedestal, and the one end for adjusting bolt 7 is welded and fixed with rod column I 8, rod column II 9 respectively by welding manner, adjusts
The other end of section bolt 7 is threadedly coupled with vertical plate 10, realizes fine adjustment function, adjusts rod column I, rod column II in by adjusting bolt
Gap between stem.When being bent work, relative motion does not occur for rod column I 8, rod column II 9 and fixing seat.Rotating disk 3 and pedestal
Make opposite rotary motion, power when bending is provided；Newel 4, which is connected through a screw thread, to be fixed in rotating disk 3, rotating disk and solid
Reservation is connected by bearing drives newel 4 and rod column I 8, rod column II 9 that opposite rotary motion occurs at work.Support frame 5,
Play guide support at work.Limiting device 6, in the accurate control bending size of work.
Bending process: rotation rotating disk, newel rotate with it, and the gap adjusted between part and newel, rod column I makes
Its leading portion moves under frictional force effect along newel gyratory directions, and part rear end keeps former direction under II reaction force of rod column
State rotates 90 ° according to rotating disk in this way, and the leading portion of part just forms 90 ° of bending angle with back segment.
Rotation speed by controlling above-mentioned rotating disk can control part to be rotated by 90 ° within the scope of certain time.
Although combining example describes process for making of the invention, it will be apparent to those skilled in the art that
Without departing from the principle of the present invention, various modifications and improvements can be made, these also should be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of manufacture craft of high intensity side's U-bolt, it is characterised in that: the following steps are included:
(1) cutting thread；
(2) Heating and Bending Formation；
(3) non-oxidation is heat-treated.
2. manufacture craft according to claim 1, it is characterised in that: the step (2) is realized by following procedure:
(2.1) to part bent angle center two sidesRange heating, in which: R is angular radius in being bent, d
For the diameter of bolt, A is part material elongation；
(2.2) heating temperature of part is controlled in (Ac3+30 DEG C)-(Ac3+100 DEG C) range, and wherein Ac3 is part material
Austenite transition temperature；
(2.3) the brake forming time is controlled in the case where guaranteeing the indeformable situation of bent angle in K × d seconds ranges；Wherein, 1.3 K=1-；
(2.4) control cooling velocity is 80-120 DEG C/h.
3. manufacture craft according to claim 2, it is characterised in that: the part material is 40Cr, the heating temperature
Range is 810 DEG C -880 DEG C；The heated perimeter is part bent angle center 41-50mm of two sides；The brake forming time model
It encloses for 18-23s.
4. according to the method described in claim 1, it is characterized by: non-oxidation heat treatment is to be heat-treated using salt bath quenching
Method.
5. method according to claim 1 to 4, it is characterised in that: the brake forming is using such as the U-shaped spiral shell in lower section
Bolt bend molding apparatus is bent, and corner is indeformable；
Side's U-bolt bend molding apparatus, including pedestal (2), rotating disk (3), newel (4), rod column I (8), rod column II
(9), support frame (5)；Rotating disk is attached achievable rotary motion by bearing and pedestal, and newel and rotating disk maintenance connect
It connects, by support frame groove maintenance part (1) one end, the part other end passes through the groove maintenance on newel and rod column I, bending
Applying active force to rotating disk when molding makes it make rotary motion drive part rotation, and part is in newel, rod column I, rod column II
It is bent under synergy around newel equal diameter.
6. device according to claim 5, it is characterised in that: be uniform force when making spares bend, opened up on rod column II
Groove.
7. device according to claim 5, it is characterised in that: for the processing for adapting to different model part, described device is also
Including vertical plate (10), rod column I and rod column II are connect by adjusting bolt (7) with one piece of vertical plate maintenance respectively, by adjusting bolt
The adjusting of front-rear position, adjust rod column I, rod column II and newel center away from.
8. according to any device of claim 6-7, it is characterised in that: for the determination for simplifying bending point, described device is also
Including limiting device (6), when part end is seated in limiting device, the point between rod column I and newel is as curved
Qu Dian.
9. device according to claim 8, it is characterised in that: the limiting device is equipped with muti-piece limit plate, uses respectively
In the determination of differently curved point.
10. device according to claim 8, it is characterised in that: the limiting device is equipped with scale and limit plate, passes through
Mobile limit plate is used for the determination of differently curved point to different position of rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805021.3A CN110434564B (en) | 2019-08-29 | 2019-08-29 | Manufacturing process of high-strength square U-shaped bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805021.3A CN110434564B (en) | 2019-08-29 | 2019-08-29 | Manufacturing process of high-strength square U-shaped bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110434564A true CN110434564A (en) | 2019-11-12 |
| CN110434564B CN110434564B (en) | 2021-08-06 |
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ID=68438129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910805021.3A Active CN110434564B (en) | 2019-08-29 | 2019-08-29 | Manufacturing process of high-strength square U-shaped bolt |
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| Country | Link |
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| CN (1) | CN110434564B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008339A (en) * | 2020-08-24 | 2020-12-01 | 山东汽车弹簧厂淄博有限公司 | Machining process for microalloying machining and strengthening U-shaped bolt |
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| RU105204U1 (en) * | 2010-12-13 | 2011-06-10 | Василий Григорьевич Двоенкин | TUBE BENDER FOR THIN WALL PIPES |
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| CN104259271A (en) * | 2014-09-17 | 2015-01-07 | 贵州航天新力铸锻有限责任公司 | Bending device and method for machining U-shaped bolt by use of bending device |
| CN205732402U (en) * | 2016-05-17 | 2016-11-30 | 厦门美驰汽配工业有限公司 | A kind of Bus Frame angle pipe equipment |
| CN206215713U (en) * | 2016-12-07 | 2017-06-06 | 绍兴赛得空调设备有限公司 | A kind of copper pipe apparatus for bending |
| CN106925642A (en) * | 2015-12-31 | 2017-07-07 | 天津市深呼吸自行车业有限公司 | A kind of automatic charging bending machine |
| CN108057743A (en) * | 2017-11-15 | 2018-05-22 | 郭弘 | A kind of bending machine that can control bend pipe angle |
| CN109570290A (en) * | 2018-10-25 | 2019-04-05 | 中国建筑第八工程局有限公司 | Tubular object extruding platform and its tubing angle pipe equipment for construction |
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2019
- 2019-08-29 CN CN201910805021.3A patent/CN110434564B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102858477A (en) * | 2010-06-04 | 2013-01-02 | 武州工业株式会社 | Pipe bender and method for spiral pipe bending with the pipe bender |
| RU105204U1 (en) * | 2010-12-13 | 2011-06-10 | Василий Григорьевич Двоенкин | TUBE BENDER FOR THIN WALL PIPES |
| CN203955804U (en) * | 2014-06-30 | 2014-11-26 | 江苏民森机械有限公司 | Simple U-shaped bending machine |
| CN104259271A (en) * | 2014-09-17 | 2015-01-07 | 贵州航天新力铸锻有限责任公司 | Bending device and method for machining U-shaped bolt by use of bending device |
| CN106925642A (en) * | 2015-12-31 | 2017-07-07 | 天津市深呼吸自行车业有限公司 | A kind of automatic charging bending machine |
| CN205732402U (en) * | 2016-05-17 | 2016-11-30 | 厦门美驰汽配工业有限公司 | A kind of Bus Frame angle pipe equipment |
| CN206215713U (en) * | 2016-12-07 | 2017-06-06 | 绍兴赛得空调设备有限公司 | A kind of copper pipe apparatus for bending |
| CN108057743A (en) * | 2017-11-15 | 2018-05-22 | 郭弘 | A kind of bending machine that can control bend pipe angle |
| CN109570290A (en) * | 2018-10-25 | 2019-04-05 | 中国建筑第八工程局有限公司 | Tubular object extruding platform and its tubing angle pipe equipment for construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008339A (en) * | 2020-08-24 | 2020-12-01 | 山东汽车弹簧厂淄博有限公司 | Machining process for microalloying machining and strengthening U-shaped bolt |
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| Publication number | Publication date |
|---|---|
| CN110434564B (en) | 2021-08-06 |
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