CN106425351A - Machining method and mounting technology of plate shearing machine blade - Google Patents
Machining method and mounting technology of plate shearing machine blade Download PDFInfo
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- CN106425351A CN106425351A CN201611072610.8A CN201611072610A CN106425351A CN 106425351 A CN106425351 A CN 106425351A CN 201611072610 A CN201611072610 A CN 201611072610A CN 106425351 A CN106425351 A CN 106425351A
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- 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
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/40—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools
- B23P15/406—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools rotary or plane die cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/06—Sheet shears
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- 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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Abstract
The invention discloses a machining method and mounting technology of a plate shearing machine blade, and belongs to the field of plate shearing machines. According to the plate shearing machine blade, the material is limited, the isothermal quenching treatment technology is adopted, and the hardness and the wear resistance of the blade are ensured; meanwhile, the mounting technology of the blade on a plate shearing machine is provided; the technology comprises the steps that firstly, a wall board and a pressing base are welded to form a rack; secondly, a tool rest and the other components are mounted; thirdly, a bracket is welded, and is placed on the rack; fourthly, a main supporting plate and an auxiliary supporting plate are subject to spot welding positioning; fifthly, a lower tool base is mounted, and the linearity of a lower tool body is adjusted; and sixthly, the opposite angle welding sequence is adopted for welding the bracket. On one hand, the machining method of the blade is improved; and on the other hand, the mounting technology of the plate shearing machine is improved, the defect of the blade and the influence of the blade mounting technology on use of the plate shearing machine are reduced, the service life of a tool is prolonged, and the good shearing effect is obtained.
Description
Technical field
A kind of the present invention relates to plate shearing machine processing technique field, more particularly, it relates to processing method of shear machine knife blade
And its mounting process.
Background technology
Plate shearing machine is used for the shearing of sheet metal, and the shearing power resources of plate shearing machine, in hydraulic drive or machine driving, are cut
It is necessary to top cutter cutting edge and bottom knife sword are adjusted according to the thickness of the shear strength being sheared sheet metal and sheet metal during plate
Gap between mouthful, and the uniformity in gap to be kept, if gap is different or blade itself has certain deformation, are entering
During row sheet shearing it is easy to cause that otch is uneven, sheet deformation and occurring situations such as blade tipping.
The most basic reason causing tool damage in prior art mainly has two, is on the one hand blade itself combination property
Difference, yielding or tipping during use；On the other hand it is the impact that the installation process of plate shearing machine causes to cutting performance.
The used blade of plate shearing machine, general requirement has higher hardness and anti-wear performance.If hardness is not enough, be difficult to into
Row sheet shearing, easily deforms and tipping in shear history.For shear machine knife blade, affect blade capabilities main because
Element is its process for machining and manufacturing, including the selection of material, forges technique, Technology for Heating Processing etc., different processing procedure, all can be right
The performance of blade causes large effect.
In the installation process of plate shearing machine, for cutter, what follow-up service life impact was larger is the group of frame and lower tool rest
Dress technique, frame is the bearing part of whole device, and the wallboard of frame both sides is used for installing upper tool post, if frame is in welding peace
There is larger internal stress during dress, then in blade work, affected by shearing force, blade can be badly influenced
Stability in use, easily produces tipping phenomenon；If additionally, frame install unqualified, plate shearing machine in upper bottom knife shear action,
By sheet material internal stress, up and down and the in front and back joint effect such as shearing force and shear plasticity elastic deformation, the plate cutting side of formation
Edge is not identical with cutting edge, but the curve of deformation.
Why the deformation of blade and processing sheet material can be affected by the installation process of plate shearing machine, main reason is that and cut
Trigger length is larger, typically in more than 2m, leads to deformation to be difficult to control to.Such as binder seat in plate shearing machine, its length is big, thickness
Little, during welding, it is easy in the middle part of tool rest that interior arch or evagination phenomenon occur, and striker plate is connected with binder seat, may affect it
Backgauge accuracy；Wallboard deformation can be made simultaneously, and then affect the shape of cutter.Certainly, the external presentation of this phenomenon is not
Very prominent, but it may be possible to serious deviate from standard for installation requirement.
In sum, the installation process of the plate shearing machine that the processing technique of either blade, or blade itself is applied to,
The shear precision of sheet material will be had influence on, influence whether the service life of blade and equipment simultaneously.Therefore, how reasonably to design
Various techniques when blade and shear machining, enable the blade to overcome various problems present in prior art, are current institutes
The main bugbear facing.
Content of the invention
1. invent technical problem to be solved
It is an object of the invention to overcoming sheet shearing low precision in prior art, the yielding tipping of shear machine knife blade not
Foot, there is provided a kind of processing method of shear machine knife blade and its mounting process.The blade stiffness of the present invention is high, and wearability is good, with
When the mounting process of plate shearing machine is optimized, reduce the blade self performance and blade mounting process on plate shearing machine to cutting
The impact of plate effect, improves the glacing flatness of plate shears otch, extends cutting-tool's used life.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that the present invention provides is：
A kind of processing method of shear machine knife blade of the present invention, using 9GrSi tool steel blanking, the component that 9GrSi includes
And weight content is C：0.86～0.90%, Mn：0.38～0.5%；Cr：1.00～1.22%, Si：1.3～1.5%, Ni：
0.14～0.16%, Cu：0.07～0.13；Remaining is Fe and inevitable impurity；Its procedure of processing is：
Step 1, blanking is carried out using 9GrSi material, then forge into blade blank；
Step 2, blank is annealed, 810～850 DEG C of annealing temperature, it is incubated 3～4 hours, then furnace cooling；
Step 3, to cooling after blade carry out planing operation, be then processed in lathe, and on blade punch；
Step 4, carry out Quenching Treatment, then carry out double tempering at 180～200 DEG C, tempering insulation 1～1.2 is little every time
When, temper number is 52～54HRC；
Step 5, to blade fine grinding process.
As quenching technical in further improvement of the present invention, step 4 it is：In heating furnace, blade is heated to 840
～860 DEG C, it is incubated 3.5～4 hours；Oil cooling, or put into 210～220 DEG C of salt made from earth containing a comparatively high percentage of sodium chloride bath insulations 30～35 minutes, then air cooling.
A kind of mounting process of shear machine knife blade of the present invention, installs the knife as described in claim 1～2 on plate shearing machine
Piece, concrete mounting process is：
Step one, between two wallboards welding support beam, binder seat, formed frame；
Step 2, in frame mounting tool post, oil cylinder, kicker cylinder, backgauge frame；Binder cylinder is installed on binder seat；Described
Blade is provided with knife rest, the installed surface on knife rest be helicoid, by hold-down bolt blade pressing on helicoid；
Step 3, weld brackets, are lifted into the bracket being welded on the wallboard of frame, and adjust the position of bracket；
Step 4, main support plate and the first wallboard junction spot welding positioning；Then to auxiliary support plate and second wallboard
Junction carries out spot welding positioning；Then successively to main support plate and the second wallboard, auxiliary support plate and the first wallboard in junction spot welding
Positioning；
Knife holder mechanism under step 5, installation on the workbench of bracket, adjusts the straight line of lower knife body in lower knife holder mechanism
Degree；
Step 6, carry out ground floor welding according to the diagonal welding sequence in step 4, after welding finishes, detect and adjust
The linearity of lower knife body, carries out second layer welding according to ground floor welding sequence, carries out deformation adjustment by second layer welding；
Step 7, complete the installation of operation device, fluid pressure line, distribution line, finally between adjustment blade and lower knife body
Gap.
As in further improvement of the present invention, step one welding binder seat during, first to binder seat and frame
Carry out spot welding positioning, then carry out ground floor welding；The linearity of upper base plate in detection binder seat after welding, using second layer weldering
Tap into row deformation adjustment.
As spot welding order in further improvement of the present invention, step one it is：From outside spot welding first wallboard and the seat of honour
The junction of plate, then from the junction of outside spot welding second wallboard and upper base plate；Weld the first wallboard and the seat of honour from interior measuring point again
The junction of plate, the then junction of spot welding second wallboard and upper base plate.
As in the ground floor welding in further improvement of the present invention, step one, using alternating expression welding method pair
Wallboard Outboard Sections are welded,
As further improvement of the present invention, when carrying out deformation adjustment using second layer welding, if upper base plate evagination,
Inside wallboard, then carry out second layer welding；If arch, carries out second layer welding outside wallboard in upper base plate.
As further improvement of the present invention, knife rest described in step 2 is arranged on knife rest balance staff, by oil cylinder and
Backhaul hydraulic oil cylinder driving knife rest swings around knife rest balance staff.
As further improvement of the present invention, bracket described in step 3 is mainly by workbench, main support plate and auxiliary
Plate forms, and during welding, first welds tool rest adjustable plate on the table, then workbench, main support plate and auxiliary support plate are welded on one
Rise, the workbench after welding is horizontally situated.
As further improvement of the present invention, lower knife body described in step 5 is fixed on lower tool rest, and this lower tool rest leads to
Draw bolt and interior supporting bolt to be connected with tool rest adjustable plate outside crossing, adjust the straight line of lower knife body by drawing outward bolt and interior supporting bolt
Degree.
3. beneficial effect
The technical scheme being provided using the present invention, compared with prior art, is had the advantages that：
(1) a kind of shear machine knife blade of the present invention, using 9GrSi tool steel material, by the control to technique, is processed
Blade has higher hardness and anti-wear performance, it is to avoid deformation, the generation of tipping phenomenon when using, and can extend making of cutter
Use the life-span；
(2) a kind of mounting process of shear machine knife blade of the present invention, on the one hand improves to the processing method of blade, carries
High blade capabilities；On the other hand the mounting process of plate shearing machine is improved, and with bolt blade pressing on helicoid,
Reduce the self-defect of blade and impact when plate shearing machine is used the mounting process of equipment, extend the use longevity of cutter
Life, obtains preferable shear effect；
(3) a kind of mounting process of shear machine knife blade of the present invention, is welded to binder seat using alternating expression welding method
Connect, more conducively weld the mutual rectification of thermal deformation；If advanced side is welded on the welding carrying out opposite side, due to whole piece
Weld seam is longer, it is possible that overall deformation, and be difficult to correct；And adopt alternating expression welding method, due between middle presence
Disconnected part, weld seam is relatively short, and one side deformation quantity is less, on the other hand can mutually carry out heat change in staggered welding process
Shape is corrected, and contributes to the raising of welding quality；Additionally, carry out the regulation of interior arch or evagination deformation using two layers of welding, significantly drop
The stress that low upper base plate exists, linearity is guaranteed；
(4) mounting process of a kind of shear machine knife blade of the present invention, in the welding entering line carrier, using diagonal Welder
Skill, contributes to eliminating deformation dislocation；Carry out every time to during fillet welding, being all first to weld main support plate, main support plate rises mainly to workbench
Supporting role, auxiliary support plate simply improves structural strength further, therefore, it is necessary to be first to weld main support plate it is ensured that its position is accurate
Really property and structural stability, and then ensure the positional precision of tool rest under workbench, improve integral solder quality.
Brief description
Fig. 1 is the installation procedure figure of plate shearing machine；
Fig. 2 is the cross section structure schematic diagram of plate shearing machine；
Fig. 3 is the distributing position schematic diagram of plate shearing machine cornice sheathing；
Fig. 4 is the structural representation of binder seat；
Fig. 5 is alternating expression welding method schematic diagram；
Fig. 6 is the structural representation of knife rest；
Fig. 7 is the A direction view in Fig. 6；
Fig. 8 is the structural representation of bracket；
Fig. 9 is the structural representation of lower knife holder mechanism；
Figure 10 is the outer position distribution schematic diagram drawing bolt and interior supporting bolt.
Label declaration in schematic diagram：1st, frame；11st, the first wallboard；12nd, the second wallboard；13rd, knife rest；131st, blade；
132nd, hold-down bolt；14th, knife rest balance staff；15th, support beam；2nd, bracket；21st, workbench；22nd, assist support plate；23rd, main support plate；24、
Transverse slat；25th, lower knife holder mechanism；251st, tool rest adjustable plate；252nd, feed support plate；253rd, lower tool rest；254th, lower knife body；255th, draw outward
Bolt；256th, interior supporting bolt；26th, reinforcing plate；3rd, binder seat；31st, upper base plate；32nd, binder connecting plate；33rd, binder cylinder.
Specific embodiment
For further appreciating that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
A kind of processing method of shear machine knife blade of the present embodiment, using 9GrSi tool steel blanking, the group that 9GrSi includes
Divide and weight content is C：0.86%, Mn：0.38%；Cr：1.14%, Si：1.3%, Ni：0.16%, Cu：0.09%, remaining
For ferrum and inevitable impurity；Its procedure of processing is：
Step 1, blanking is carried out using the 9GrSi material of said ratio, then forge into blade blank；
Step 2, blank is annealed, 840～850 DEG C of annealing temperature, it is incubated 3.5 hours, then furnace cooling；
Step 3, to cooling after blade carry out planing operation, be then processed in lathe, and on blade punch, use
In installation hold-down bolt；
Step 4, the blade after processing is carried out Quenching Treatment, using isothermal quenching technique, in heating furnace blade plus
Heat, to 855～860 DEG C, is incubated 3.5 hours；It is then placed in 215～220 DEG C of salt made from earth containing a comparatively high percentage of sodium chloride bath insulations 30 minutes, then air cooling, complete to quench
Fire；Blade after quenching is carried out being tempered for the first time, 190～200 DEG C of temperature；It is incubated 1 hour, temper number is
58HRC；Then second tempering, 185～190 DEG C of temperature are carried out；Insulation 1.1 hours, temper number is 58HRC.
Step 5, to blade fine grinding process.
In the present invention, chromium (Gr) can increase the quenching degree of steel and have post-curing to act on, and can improve hardness and the wearability of steel
And so that steel is become fragile；Silicon (Si) can improve the quenching degree of steel, has remarkable effect for the intensity improving blade；Manganese (Mn) is steel
Important alloying element in material, can form the alloyed cementite containing manganese, the forming core of alloyed cementite when can reduce perlitic transformation
With long speed, improve quenching degree.By temper, eliminate stress concentration phenomenon, it is to avoid the generation of crackle；Using isothermal hardening
Method, can make blade obtain higher hardness and toughness.
Embodiment 2
A kind of processing method of shear machine knife blade of the present embodiment, using 9GrSi tool steel blanking, carbon weight in 9GrSi
Content is 0.88%, and weight of chromium content is 1.18%, and silicon weight content is 0.9%, and manganese weight content is 0.45%, its with for ferrum
With inevitable impurity, its procedure of processing is：
Step 1, blanking is carried out using the 9GrSi material of said ratio, then forge into blade blank；
Step 2, blank is annealed, 850 DEG C of annealing temperature, it is incubated 3 hours, then furnace cooling；
Step 3, to cooling after blade carry out planing operation, be then processed in lathe, and on blade punch, use
In installation hold-down bolt；
Step 4, the blade after processing is carried out Quenching Treatment, using isothermal quenching technique, in heating furnace blade plus
Heat, to 855～860 DEG C, is incubated 3.5 hours；It is then placed in 210～220 DEG C of salt made from earth containing a comparatively high percentage of sodium chloride bath insulations 30 minutes, then air cooling, complete to quench
Fire；Blade after quenching is carried out being tempered for the first time, 180～200 DEG C of temperature, be incubated 1 hour, temper number is
58HRC；Then carry out second tempering, 190～200 DEG C of temperature, be incubated 1.1 hours, temper number is 57HRC.
Step 5, to blade fine grinding process.
Embodiment 3
In conjunction with Fig. 2, plate shearing machine generally comprises the frame being made up of two wallboards and support beam, the binder being connected with wallboard
Seat, knife rest, oil cylinder etc. are although structure is more conventional, but its installation process affects larger, this reality for the service life of equipment
Apply example and provide a kind of mounting process of shear machine knife blade, such as Fig. 1, its detailed process is：
Step one, between two wallboards welding support beam 15, binder seat 3, formed frame 1.
As shown in figure 3, wallboard includes the first wallboard 11 and the second wallboard 12, first two wallboard frames are fixed, then
Welding support beam 15, then welds binder seat 3.In binder seat 3 welding process, first spot welding is carried out to binder seat 3 and frame 1 fixed
Position, is fixed on binder seat 3 between two wallboards, then carries out ground floor welding；Upper base plate in detection binder seat 3 after welding
31 linearity, carries out deformation adjustment using second layer welding.
As shown in figure 4, binder seat 3 is mainly combined by upper base plate 31 and binder connecting plate 32, both form T junction
Structure, wherein, binder connecting plate 32 is primarily used to install feeding pressure mechanism, and upper base plate 31 is then used to fixing binder connecting plate
32 so as to be fixed in frame.Upper cutter head is usually mounted in the position in frame near upper base plate 31, if upper base plate 31 welds
When connecing, deformation is larger, and whole frame can be made all to there is stress concentration phenomenon, leads to structural strength not enough, when using it is easy to
Crack；On shear effect impact larger in some instances it may even be possible to occur that sword splits phenomenon, have a strong impact on cutter and equipment use the longevity
Life.Accordingly, it would be desirable to draw using second layer welding ensure overall welding quality.
What deserves to be explained is, when carrying out deformation adjustment using second layer welding, if upper base plate 31 evagination, i.e. upper base plate 31
Middle part is protruded to the side deviateing frame, then carry out second layer welding inside wallboard, and leg can be to upper base plate 31 1 lateral deviation
Move；If arch in upper base plate 31, that is, near the side of frame depression in the middle part of upper base plate 31, then carry out second layer weldering outside wallboard
Connect.The paving open area of leg can be increased after second layer welding, due to the difference of welding position, reach the aligning seat of honour from different directions
The purpose of plate 31, thus allow guarantee welding quality.
Additionally, before carrying out second layer welding, if upper base plate 31 deformation quantity is larger, support beam 15 can be carried out with two layers of weldering
Connect.The Main Function of support beam 15 is reinforcement structure intensity, and is distributed in the both sides in front and back of frame with binder seat 3, in deformation
In the case of larger, simple it is difficult to make it recover shape by adjusting to the weld seam of binder seat 3, and by support beam 15
Two layers of welding, can be adjusted with internal stress, contributes to the release of stress, reduces the impact to deformation for the support beam.
Step 2, in frame 1 mounting tool post 13, oil cylinder, kicker cylinder, backgauge frame；Binder cylinder is installed on binder seat 3
33.
Described knife rest 13 is arranged on knife rest balance staff 14, by oil cylinder and backhaul hydraulic oil cylinder driving knife rest 13 around knife rest balance staff 14
Swing, oil cylinder and kicker cylinder are used for driving knife rest 13 to move, and carry out sheet shearing by the upper knife body on knife rest 13, this upper knife body
It is blade 131；In conjunction with Fig. 6, Fig. 7, the installed surface on the present embodiment intermediate slide 13 is helicoid, by hold-down bolt 132
Blade 131 is pressed on helicoid, need not arrange backing plate to adjust blade work face shape, reduce maintenance difficulties, have simultaneously
Help improve shear precision.
Equipped with striker plate on backgauge frame, for controlling panel length.Binder cylinder 33 is set in qually spaced in binder seat 3 bottom,
And be bolted；The piston shaft of binder cylinder 33 is connected with spring.Binder cylinder 33 is used for compressing sheet material, prevents in shearing
During sheet material dislocation.If binder seat 3 has deformation, on the one hand sheet material can be made during binder to have certain deformation,
On the other hand wallboard can be led to produce faint deformation, and knife rest 13 is mounted on wallboard, the making of impact machining accuracy and cutter
Use the life-span.
Step 3, weld brackets 2, are lifted into the bracket 2 being welded on the wallboard of frame 1, and adjust the position of bracket 2
Put.
As shown in figure 8, the Main Function of bracket 2 is to carry lower tool rest, mainly by workbench 21, main support plate 23 and auxiliary
Plate 22 forms.During welding, first on workbench 21, weld tool rest adjustable plate 251, then workbench 21, main support plate 23 and auxiliary are propped up
Plate 22 welds together, and the workbench 21 after welding is horizontally situated.
Main support plate 23 is vertically arranged, and auxiliary support plate 22 can be vertically arranged, also tiltable setting, because it primarily serves auxiliary
Supporting role, is not specifically limited.
In order to increase structural strength, it is connected with transverse slat 24 in the bottom position of main support plate 23 and auxiliary support plate 22, this transverse slat
24 are prevented from main support plate 23 and auxiliary support plate 22 internally deformation during welding, have certain thermal deformation supporting role.
After step 4, step 3 adjustment good position, need to carry out spot welding positioning.Because bracket overall dimensions are larger, its change
Shape very little, the deformation that main deformation occurs in position skew during ground floor welding and causes, accordingly, it would be desirable to determine in spot welding
Good welding position.During concrete operations, spot welding is carried out using diagonal welding manner, in the junction of main support plate 23 and the first wallboard 11
Spot welding positions；Then spot welding positioning is carried out to the junction of auxiliary support plate 22 and the second wallboard 12；Then successively to main support plate 23
Position in junction spot welding with the second wallboard 12, auxiliary support plate 22 and the first wallboard 11.
Knife holder mechanism 25 under step 5, installation on the workbench 21 of bracket 2, adjusts lower knife body in lower knife holder mechanism 25
254 linearity.
Step 6, carry out ground floor welding according to the diagonal welding sequence in step 4, after welding finishes, detect and adjust
The linearity of lower knife body 254, carries out second layer welding according to ground floor welding sequence, carries out deformation tune by second layer welding
Whole；
Step 7, complete the installation of operation device, fluid pressure line, distribution line and remainder, its step can be according to normal
Rule method is operated, and repeats no more.
The present invention passes through the reasonable arrangement to assembling, welding procedure, each part of plate shearing machine is mounted together, Er Qietong
The interaction crossing two layers of welding procedure reduces deformation and internal stress, thus overcoming the difficult point of tool rest deformation during welded and installed,
Improve welding quality, eliminate deformation when shear cutter uses and stress concentration phenomenon, extend making of cutter and equipment
Use the life-span.
Embodiment 4
A kind of mounting process of shear machine knife blade of the present embodiment, its basic process is same as Example 3, its difference
It is：In step one, spot welding order is：From the junction of outside spot welding the first wallboard 11 and upper base plate 31, then from outside spot welding
Second wallboard 12 and the junction of upper base plate 31；Again from the junction of interior measuring point weldering the first wallboard 11 and upper base plate 31, Ran Houdian
Weld the junction of the second wallboard 12 and upper base plate 31.
Embodiment 5
In conjunction with Fig. 5, a kind of mounting process of shear machine knife blade of the present embodiment, its basic process is same as Example 4, its
Difference is：In ground floor welding in step one, using alternating expression welding method, wallboard Outboard Sections are welded,
Alternating expression welding sequence is：
A, the first wallboard 11 and upper base plate 31 upper and lower combination spot welding, then weld the second wallboard 12 and upper base plate
31 middle part binding site；
The middle part binding site of B, welding the first wallboard 11 and upper base plate 31；
The upper and lower binding site of C, welding the second wallboard 12 and upper base plate 31.
First in the position of a framed side wallboard, 1. place is welded, intermediate formation spaced points；Then in the position of wallboards of opposite side
2. place is welded, and 1. locates welding with position and forms complementation；Then in position, 3. place is welded, and 4. last welding position is located,
Which can shorten weld seam, reduce thermal deformation, the thermal deformation of both sides can be made again to cancel out each other, and obtain and preferably weld matter
Amount.
If first carrying out the welding that side welding carries out opposite side again, because whole piece weld seam is longer, it is possible that whole
The bodily form becomes, and is difficult to correct；And adopt alternating expression welding method, and there is interruption part due to middle, weld seam is relatively short, one
Aspect deformation quantity is less, there is certain cooling meat time；On the other hand heat can mutually be carried out in staggered welding process
Straightening, contributes to the raising of welding quality.
Embodiment 6
A kind of mounting process of shear machine knife blade of the present embodiment, its basic process is same as Example 5, its difference
It is：
In conjunction with Fig. 8, enter in step 3 line carrier welding when, in order to ensure the structural strength of main support plate 23, at main
It is welded with reinforcing plate 26 between plate 23 and workbench 21, between main support plate 23, workbench 21 and reinforcing plate 26, form a triangle
Structure.
In concrete welding, after having welded main support plate 23, adjust the position of reinforcing plate 26, itself and main support plate 23 can be set
Angle be 38 °, may be alternatively provided as other angle values in 30～48 °, be not specifically limited；Then reinforcing plate 26 spot welding is fixed
Position, then carry out seam to two and weld.
Due to strength support effect will be played, and it is connected with workbench 21, so needing angle between 30～48 °,
If angle is excessive, the lateral bearing component that can share becomes big, and longitudinal load-bearing component diminishes, the stable support that can play
Effect less, therefore will make restriction to angle.
When specifically used, also as structural reinforcing plate in the form of two pieces of points of plates, but the welding process of point plate can be adopted
More trouble it is not easy to control overall deformation, therefore, operation relatively complicated it is difficult to produce a desired effect, can root when specifically used
According to the version needing selection reinforcing plate.
Embodiment 7
A kind of mounting process of shear machine knife blade of the present embodiment, its basic process is same as Example 6, its difference
It is：
In conjunction with Fig. 9, Figure 10, in step 5, lower knife body 254 is fixed on lower tool rest 253, lower tool rest 253 top be fixed with into
Material support plate 252, tool rest adjustable plate 251 is welded on workbench 21 upper surface, and this lower tool rest 253 passes through to draw outward bolt 255 and interior supports
Bolt 256 is connected with tool rest adjustable plate 251.Wherein, bolt 255 is drawn outward can to strain lower tool rest 253 to the right；Interior supporting bolt
256 can prop up lower tool rest 253 to the left；By drawing outward the straight line of bolt 255 and interior supporting bolt 256 scalable lower knife body 254
Degree, can adjust the position of lower knife body 254 simultaneously, change the spacing of upper knife body and lower knife body, adapt to cutting of different-thickness sheet material
Cut.
In the second layer welding process of step 6, need to carry out the adjustment of Size of welds, this adjustment according to testing result
It is mainly reflected in the adjustment of Size of welds at main support plate 23.Due to there is auxiliary support plate, when carrying out second layer welding, usually
Leg is offset to main support plate side, thus obtaining larger paving open area, i.e. the exterior surface area of leg, thus overcome presence
Faint thermal deformation.
The present invention is by blade processing method, and assembling, the reasonable arrangement of welding procedure, each part of plate shearing machine
It is mounted together, and deformation and internal stress are reduced by the interaction of welding procedure, thus reducing plate shearing machine welding
The impact to blade for the mounting process, improves welding quality, overcomes blade self-defect and plate shearing machine frame to shearing
Impact, eliminate deformation when shear machine knife blade uses, tipping phenomenon, shear precision is higher, extend cutter and equipment
Service life.
Below schematically the present invention and embodiments thereof are described, this description does not have restricted, institute in accompanying drawing
Show is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel enlightened by it, in the case of without departing from the invention objective, designs and this technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of processing method of shear machine knife blade is it is characterised in that adopt 9GrSi tool steel blanking, the component that 9GrSi includes
And weight content is C：0.86～0.90%, Mn：0.38～0.5%；Cr：1.00～1.22%, Si：1.3～1.5%, Ni：
0.14～0.16%, Cu：0.07～0.13；Its procedure of processing is：
Step 1, blanking, then forge into blade blank；
Step 2, blank is annealed, 810～850 DEG C of annealing temperature, it is incubated 3～4 hours, then furnace cooling；
Step 3, to cooling after blade carry out planing operation, then carry out processing and forming in lathe, and on blade punch；
Step 4, carry out Quenching Treatment, then carry out double tempering at 180～200 DEG C, tempering insulation 1～1.2 hour, returns every time
After fire, hardness is 52～54HRC；
Step 5, to blade fine grinding process.
2. a kind of shear machine knife blade according to claim 1 processing method it is characterised in that：Quenching technical in step 4
For：In heating furnace, blade is heated to 840～860 DEG C, is incubated 3.5～4 hours；Oil cooling, or put into 210～220 DEG C of salt made from earth containing a comparatively high percentage of sodium chloride
Bath insulation 30～35 minutes, then air cooling.
3. a kind of mounting process of shear machine knife blade it is characterised in that：Plate shearing machine is installed as described in claim 1～2
Blade (131), concrete mounting process is：
Step one, welding support beam, binder seat (3), formation frame (1) between two wallboards；
Step 2, in frame (1) upper mounting tool post (13), oil cylinder, kicker cylinder, backgauge frame；In binder seat (3) upper installation binder cylinder
(33)；Blade (131) is provided with described knife rest (13), the installed surface on knife rest (13) is helicoid, by hold-down bolt
(132) blade (131) is pressed on helicoid；
Step 3, weld brackets (2), are lifted into the bracket (2) being welded on the wallboard of frame (1), and adjust bracket (2)
Position；
Step 4, main support plate (23) and the first wallboard (11) junction spot welding positioning；Then to auxiliary support plate (22) and the
The junction of two wallboards (12) carries out spot welding positioning；Then successively to main support plate (23) and the second wallboard (12), auxiliary support plate
(22) position in junction spot welding with the first wallboard (11)；
Knife holder mechanism (25) under the upper installation of step 5, the workbench (21) in bracket (2), under adjusting in lower knife holder mechanism (25)
The linearity of cutter hub (254)；
Step 6, carry out ground floor welding according to the diagonal welding sequence in step 4, after welding finishes, detect and adjust lower knife
The linearity of body (254), carries out second layer welding according to ground floor welding sequence, carries out deformation adjustment by second layer welding；
Step 7, complete the installation of operation device, fluid pressure line, distribution line, finally adjustment blade (131) and lower knife body
(254) gap.
4. a kind of shear machine knife blade according to claim 1 mounting process it is characterised in that：In welding pressure in step one
During material seat (3), first spot welding positioning is carried out to binder seat (3) and frame (1), then carry out ground floor welding；Examine after welding
The linearity of upper base plate (31) in pressure measurement material seat (3), carries out deformation adjustment using second layer welding.
5. a kind of shear machine knife blade according to claim 4 mounting process it is characterised in that：Spot welding order in step one
For：From the junction of outside spot welding first wallboard (11) and upper base plate (31), then from outside spot welding second wallboard (12) with upper
The junction of seat board (31)；Weld the junction of the first wallboard (11) and upper base plate (31), then spot welding second wall again from interior measuring point
Plate (12) and the junction of upper base plate (31).
6. a kind of shear machine knife blade according to claim 4 mounting process it is characterised in that：Ground floor in step one
In welding, using alternating expression welding method, wallboard Outboard Sections are welded.
7. a kind of shear machine knife blade according to claim 4 mounting process it is characterised in that：Welded using the second layer
When carrying out deformation adjustment, if upper base plate (31) evagination, carry out second layer welding inside wallboard；If arch in upper base plate (31),
Outside wallboard, then carry out second layer welding.
8. a kind of shear machine knife blade according to any one of claim 3～7 mounting process it is characterised in that：Step
Knife rest described in two (13) is arranged on knife rest balance staff (14), by oil cylinder and backhaul hydraulic oil cylinder driving knife rest (13) around knife rest balance staff
(14) swing.
9. a kind of shear machine knife blade according to any one of claim 3～7 mounting process it is characterised in that：Step
Bracket described in three (2) is main to be made up of workbench (21), main support plate (23) and auxiliary support plate (22), during welding, first in work
Platform (21) is upper to weld tool rest adjustable plate (251), then workbench (21), main support plate (23) and auxiliary support plate (22) are welded on one
Rise, the workbench (21) after welding is horizontally situated.
10. a kind of shear machine knife blade according to any one of claim 3～7 mounting process it is characterised in that：Step
Lower knife body described in five (254) is fixed on lower tool rest (253), this lower tool rest (253) pass through outward draw bolt (255) and interior to spiral shell
Bolt (256) is connected with tool rest adjustable plate (251), adjusts lower knife body (254) by drawing outward bolt (255) and interior supporting bolt (256)
Linearity.
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| CN107160124A (en) * | 2017-06-29 | 2017-09-15 | 沈忠伟 | A kind of thin sword cutting knife processing method of mould |
| CN110695625A (en) * | 2019-10-21 | 2020-01-17 | 奚峰利 | Production process of forklift plate |
| CN111299988A (en) * | 2020-03-19 | 2020-06-19 | 马鞍山市申力特重工机械股份有限公司 | Manufacturing method of thick blade for plate shearing machine |
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| CN110695625A (en) * | 2019-10-21 | 2020-01-17 | 奚峰利 | Production process of forklift plate |
| CN110695625B (en) * | 2019-10-21 | 2020-12-29 | 奚峰利 | Production process of forklift plate |
| CN111299988A (en) * | 2020-03-19 | 2020-06-19 | 马鞍山市申力特重工机械股份有限公司 | Manufacturing method of thick blade for plate shearing machine |
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| CN106425351B (en) | 2019-12-03 |
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