CN104128396A - Workpiece straightening machine and straightening method thereof - Google Patents

Workpiece straightening machine and straightening method thereof Download PDF

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Publication number
CN104128396A
CN104128396A CN201410329880.7A CN201410329880A CN104128396A CN 104128396 A CN104128396 A CN 104128396A CN 201410329880 A CN201410329880 A CN 201410329880A CN 104128396 A CN104128396 A CN 104128396A
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China
Prior art keywords
pressure block
pressure
press
bending amount
pressure head
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Granted
Application number
CN201410329880.7A
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Chinese (zh)
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CN104128396B (en
Inventor
郝建军
石晓辉
刘子涛
石钧仁
李玉煌
黄继鑫
朱建伟
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Chongqing University of Technology
Chongqing Academy Of Science and Technology
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Chongqing University of Technology
Chongqing Academy Of Science and Technology
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Priority to CN201410329880.7A priority Critical patent/CN104128396B/en
Publication of CN104128396A publication Critical patent/CN104128396A/en
Application granted granted Critical
Publication of CN104128396B publication Critical patent/CN104128396B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a workpiece straightening machine which comprises a follow-up thimble, a pressing head, a driving thimble, a bearing supporting column, a work sliding table, a bearing plate, a pressure measuring part and a bending control device. The follow-up thimble, the bearing supporting column and the driving thimble are arranged on the work sliding table, and the work sliding table is in sliding fit with the bearing plate. The bending control device comprises an upper bearing block, a lower bearing block, a feeding block, a spring and a baffle, a through hole is formed in the work sliding table, and the position, below the through hole, on the bearing plate is provided with a cavity used for arranging the bending control device. Meanwhile, the invention further discloses a workpiece straightening method. In the anti-bent straightening process of shaft and rod workpieces, the bending of the workpieces and the stroke of the pressing head can be effectively controlled. It is guaranteed that deformation of the workpieces is within a preset range, and the phenomena of insufficient bending and over bending in the workpiece straightening process are avoided. Particularly to the hydraulically-driven pressing head, the precision control demand of the pressing head strokes can be effectively lowered, operation and production efficiency is improved, and the scrappage of the workpieces is reduced.

Description

Workpiece straightener and aligning method thereof
Technical field
The present invention relates to a kind of workpiece straightener and aligning method thereof, particularly relate to a kind of axle rod workpieces straightener and aligning method thereof.
Background technology
In the alignment processing method of axle rod workpieces, straightening method is one of method often adopting, the theory of its alignment principle based on elastic-plastic deformation, and workpiece is realized alignment under cold conditions.Operation principle is the work mounting s with original curved to be aimed to turn of bilge position with pressure head between certain two moving fulcrum of workbench oppositely bend.Make by this method workpiece produce plastic deformation, thereby reach the object of alignment.
At present, press-bending amount is mainly controlled by ram travel, and pressure head adopts the modes such as hydraulic-driven or servo-drive.In actual alignment process, the height of the compression struts under pressure head will add the minimum altitude that man-hour, workpiece can arrive lower than press-bending, cause pressing down the obstruction of process avoiding, but it highly can not regulate, as shown in Figure 1.Impact due to factors such as axostylus axostyle class workpiece size deviation, hardness deviation and the elastic-plastic deformation feature of self and the rigidity of machine tools, causes under same ram travel specified criteria, and the press-bending amount dispersiveness of the actual generation of workpiece is very large.The press-bending amount of part workpiece departs from desired value scope, makes workpiece easily produce crooked not enough and excessively curved phenomenon, and also can reduce work production efficiency in this process, increases percent defective.
Summary of the invention
In order to overcome existing pressure straightening machine, in alignment process, axle rod workpieces press-bending amount and ram travel are controlled to the undesirable crooked not enough and excessively curved phenomenon of workpiece that causes, the invention provides a kind of workpiece straightener.
For the deficiencies in the prior art, the present invention also provides a kind of workpiece aligning method.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
Workpiece straightener, comprises servo-actuated thimble, pressure head, driving thimble, compression struts, working slider, bearing plate, pressure measurement unit and press-bending amount control device; Described servo-actuated thimble, compression struts and driving thimble are arranged on working slider and can move with working slider, and described working slider is arranged on bearing plate and with bearing plate and slidably coordinates; Described press-bending amount control device comprises pressure block, lower pressure block, feeding piece, spring and baffle plate, on described working slider and be positioned at pressure head under a through hole is set, on described bearing plate and be positioned at through hole under cavity is set, described press-bending amount control device is arranged in cavity, described lower pressure block is positioned at the bottom of cavity, upper pressure block is pressed on lower pressure block and with the upper surface slide of lower pressure block and coordinates, and described upper pressure block and bearing plate in the horizontal direction fixing and in the vertical direction are slidably matched; Described feeding piece oblique cutting is between a side of lower pressure block and a sidewall of cavity, described baffle plate is near another sidewall of cavity, one end of described spring is pressed on baffle plate, the other end of spring is pressed on lower pressure block, compression struts under described pressure head passes through hole and is slidably matched with working slider in the vertical direction, and the bottom of the compression struts under pressure head is pressed on pressure block;
Described pressure measurement unit is arranged on the bottom face of pressure head, between the compression struts under pressure head and upper pressure block, between upper pressure block and lower pressure block or between the bottom in lower pressure block and cavity.
This straightener is equiped with pressure measurement unit, and when being mainly used to detect pressure head and pressing down, whether the press-bending amount of workpiece reaches set-point.For adopting hydraulically powered pressure head, also can judge by the change situation of detected pressures whether press-bending amount reaches set-point.
As a preferred embodiment of the present invention, the lower surface of the upper surface of described upper pressure block and lower pressure block is the inclined plane cooperatively interacting, and the upper surface of described upper pressure block is high near the height of a side of baffle plate near the aspect ratio of a side of feeding piece.
A kind of workpiece aligning method provided by the invention, has adopted above-mentioned workpiece straightener in the method, and the method comprises the steps:
1), for the initial bending amount that is bearing in the axle rod workpieces of the distortion on working slider, determine the press-bending amount of axle rod workpieces;
2) according to the press-bending amount of axle rod workpieces, by press-bending amount control device, regulate the height of compression struts under pressure head to make it reach set-point;
3) oppositely bending in the turn of bilge position that pressure head is aimed at the axle rod workpieces of distortion, when the axle rod workpieces by alignment is when compression struts under pressure head contacts, shows that the press-bending amount of axle rod workpieces reaches set-point, and pressure head stops pressing down.
The invention has the beneficial effects as follows: in the straightening process of axle rod workpieces, can effectively control workpiece press-bending amount and ram travel; Guarantee that the distortion of workpiece is in predetermined scope, avoid being produced crooked not enough and excessively curved phenomenon by alignment workpiece; Particularly, for adopting hydraulically powered pressure head, can effectively reduce the precision of ram travel and control requirement, improve work production efficiency, reduce the scrappage of workpiece.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing workpiece straightener;
Fig. 2 is the schematic diagram of workpiece straightener of the present invention;
Fig. 3 is the structural representation of press-bending amount control device.
In figure: 1-servo-actuated thimble; 2-pressure head; 3-driving thimble; 4-compression struts; 5-working slider; 6-bearing plate; 7-upper pressure block; 8-lower pressure block; 9-feeding piece; 10-spring; 11-baffle plate; 12-axle rod workpieces.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 2, workpiece straightener comprises servo-actuated thimble 1, pressure head 2, drives thimble 3, compression struts 4, working slider 5, bearing plate 6, pressure measurement unit and press-bending amount control device.Servo-actuated thimble 1, compression struts 4 and driving thimble 3 are arranged on working slider 5 and can move with working slider 5 (can move left and right), and pressure head 2 working slider 5 relative to bearing plate 6 is static.Working slider 5 is arranged on bearing plate 6 and with bearing plate 6 and slidably coordinates.
As shown in Figure 3, press-bending amount control device comprises that pressure block 7, lower pressure block 8, feeding piece 9(feeding piece 9 are a skewback to the structure of press-bending amount control device), spring 10 and baffle plate 11.On working slider 5 and be positioned at pressure head 2 under a through hole is set, on bearing plate 6 and be positioned at through hole under cavity is set, press-bending amount control device is arranged in cavity, lower pressure block 8 is positioned at the bottom of cavity, upper pressure block 7 is pressed on lower pressure block 8 and with the upper surface slide of lower pressure block 8 and coordinates, and upper pressure block 7 fixes in the horizontal direction with bearing plate 6 and in the vertical direction is slidably matched.Feeding piece 9 oblique cuttings are between a side of lower pressure block 8 and a sidewall of cavity, baffle plate 11 is near another sidewall of cavity, one end of spring 10 is pressed on baffle plate 11, the other end of spring 10 is pressed on lower pressure block 8, compression struts 4 under pressure head 2 passes through hole and is slidably matched with working slider 5 in the vertical directions, and the bottom of the compression struts 4 under pressure head 2 is pressed on pressure block 7.
The lower surface of the upper surface of upper pressure block 7 and lower pressure block 8 is the inclined plane cooperatively interacting, and the upper surface of upper pressure block 7 is high near the height of a side of baffle plate 11 near the aspect ratio of a side of feeding piece 9.Feeding piece 9, lower pressure block 8 and spring 10 are in same level position, and lower pressure block 8 and upper pressure block 7 are in same vertical position.When using this press-bending amount control device, by the adjusting to feeding piece 9 horizontal lengthwise positions, change lower pressure block 8 horizontal cross positions, and then make pressure block 7 produce relative displacement at vertical direction, the horizontal cross displacement of pressure block 8 under this process medi-spring 10 changes.
The maximum difference of this workpiece straightener and existing straightener is that the height of the compression struts 4 under pressure head 2 can regulate, and by the press-bending of the fine adjustment Control Shaft rod workpieces 12 to this compression struts 4, measures.
Pressure measurement unit is arranged on the bottom face of pressure head 2, between compression struts 4 and upper pressure block 7 under pressure head 2, between upper pressure block 7 and lower pressure block 8 or between the bottom in lower pressure block 8 and cavity.Pressure measurement unit can be both pressure sensor, can be also stress strain gauge, or other load-sensing unit.
Workpiece aligning method, by the fine adjustment to compression struts height under pressure head, reaches the object of Control Shaft rod workpieces press-bending amount, and the method comprises the steps:
1), for the initial bending amount that is bearing in the axle rod workpieces 12 of the distortion on working slider 5, determine the press-bending amount of axle rod workpieces 12.
2) according to the press-bending amount of axle rod workpieces 12, by press-bending amount control device, regulate the height of compression struts 4 under pressure head 2 to make it reach set-point.
3) oppositely bending in the turn of bilge position that pressure head 2 is aimed at the axle rod workpieces 12 of distortion, when the axle rod workpieces 12 by alignment is when compression struts 4 under pressure head 2 contacts, shows that the press-bending amount of axle rod workpieces 12 reaches set-point.
In this process, under pressure head 2, the height of compression struts 4 is by regulating press-bending amount control device to realize, and when pressure measurement unit is mainly used to detect pressure head 2 and presses down, whether the press-bending amount of axle rod workpieces 12 reaches set-point.For adopting hydraulically powered pressure head 2, also can judge by the change situation of detected pressures whether press-bending amount reaches set-point.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.

Claims (3)

1. workpiece straightener, comprises servo-actuated thimble (1), pressure head (2), drives thimble (3), compression struts (4), working slider (5), bearing plate (6) and pressure measurement unit, described servo-actuated thimble (1), compression struts (4) and driving thimble (3) are arranged on working slider (5) above and can move with working slider (5), and described working slider (5) is arranged on bearing plate (6) above and slidably coordinates with bearing plate (6), it is characterized in that: also comprise press-bending amount control device, described press-bending amount control device comprises pressure block (7), lower pressure block (8), feeding piece (9), spring (10) and baffle plate (11), described working slider (5) upper and be positioned at pressure head (2) under a through hole is set, described bearing plate (6) upper and be positioned at through hole under cavity is set, described press-bending amount control device is arranged in cavity, described lower pressure block (8) is positioned at the bottom of cavity, upper pressure block (7) is pressed in lower pressure block (8) above and coordinates with the upper surface slide of lower pressure block (8), described upper pressure block (7) fixes in the horizontal direction with bearing plate (6) and in the vertical direction is slidably matched, described feeding piece (9) oblique cutting is between a side of lower pressure block (8) and a sidewall of cavity, described baffle plate (11) is near another sidewall of cavity, one end of described spring (10) is pressed on baffle plate (11), the other end of spring (10) is pressed on lower pressure block (8), compression struts (4) under described pressure head (2) passes through hole and is slidably matched with working slider (5) in the vertical direction, and the bottom of the compression struts (4) under pressure head (2) is pressed on pressure block (7),
Described pressure measurement unit is arranged on the bottom face of pressure head (2), between compression struts (4) and upper pressure block (7) under pressure head (2), between upper pressure block (7) and lower pressure block (8) or between the bottom in lower pressure block (8) and cavity.
2. workpiece straightener according to claim 1, it is characterized in that: the lower surface of the upper surface of described upper pressure block (7) and lower pressure block (8) is the inclined plane cooperatively interacting, the upper surface of described upper pressure block (7) is high near the height of a side of baffle plate (11) near the aspect ratio of a side of feeding piece (9).
3. workpiece aligning method, is characterized in that, has adopted in the method the workpiece straightener described in claim 1 or 2, and the method comprises the steps:
1), for the initial bending amount that is bearing in the axle rod workpieces (12) of the distortion on working slider (5), determine the press-bending amount of axle rod workpieces (12);
2) according to the press-bending amount of axle rod workpieces (12), by press-bending amount control device, regulate the height of compression struts (4) under pressure head (2) to make it reach set-point;
3) oppositely bend in the turn of bilge position that pressure head (2) is aimed at the axle rod workpieces (12) of distortion, when reaching press-bending amount set-point, pressure head (2) stops pressing down; When the axle rod workpieces (12) by alignment is when compression struts (4) under pressure head (2) contacts, show that the press-bending amount of axle rod workpieces (12) reaches set-point.
CN201410329880.7A 2014-07-11 2014-07-11 Workpiece straightener and aligning method thereof Expired - Fee Related CN104128396B (en)

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Application Number Priority Date Filing Date Title
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CN104128396B CN104128396B (en) 2015-12-30

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475496A (en) * 2014-11-14 2015-04-01 燕山大学 Straightening method and device for thick shaft like parts
CN105268782A (en) * 2015-11-13 2016-01-27 舟山长宏国际船舶修造有限公司 Handrail correcting device
CN105499322A (en) * 2016-01-29 2016-04-20 合肥压力机械有限责任公司 Shaft part straightening auxiliary tool
CN106563714A (en) * 2016-10-31 2017-04-19 中国水利水电第十二工程局有限公司 Hydraulic correction platform for gate slot track of gate
CN107442602A (en) * 2016-05-31 2017-12-08 南京理工大学 A kind of antidote of aluminum alloy tripod casting height

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DE102006032829B3 (en) * 2006-05-06 2007-10-31 Esem Grünau GmbH & Co. KG Device for arranging or deforming shaft workpieces, comprises a lifting device, which is propelled by impact plunger on work piece, two supports that are supported between the workpiece, and measuring device coupled with a force sensor
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CN103419032A (en) * 2012-05-21 2013-12-04 昆山华辰重机有限公司 Multifunctional universal supporting mechanism
CN103480701A (en) * 2013-09-05 2014-01-01 格林精密部件(苏州)有限公司 Correcting device for gear shaft in vehicle steering system
CN203578458U (en) * 2013-12-11 2014-05-07 广东富华重工制造有限公司 Trailer axle automatic digital straightening machine

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475496A (en) * 2014-11-14 2015-04-01 燕山大学 Straightening method and device for thick shaft like parts
CN105268782A (en) * 2015-11-13 2016-01-27 舟山长宏国际船舶修造有限公司 Handrail correcting device
CN105268782B (en) * 2015-11-13 2017-06-16 舟山长宏国际船舶修造有限公司 A kind of railing apparatus for correcting
CN105499322A (en) * 2016-01-29 2016-04-20 合肥压力机械有限责任公司 Shaft part straightening auxiliary tool
CN105499322B (en) * 2016-01-29 2017-06-20 合肥压力机械有限责任公司 Aligning axis part accessory
CN107442602A (en) * 2016-05-31 2017-12-08 南京理工大学 A kind of antidote of aluminum alloy tripod casting height
CN106563714A (en) * 2016-10-31 2017-04-19 中国水利水电第十二工程局有限公司 Hydraulic correction platform for gate slot track of gate

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