CN108015146A - A kind of tension force ball spinning method - Google Patents
A kind of tension force ball spinning method Download PDFInfo
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- CN108015146A CN108015146A CN201611149197.0A CN201611149197A CN108015146A CN 108015146 A CN108015146 A CN 108015146A CN 201611149197 A CN201611149197 A CN 201611149197A CN 108015146 A CN108015146 A CN 108015146A
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- tension force
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- 238000009987 spinning Methods 0.000 title claims abstract description 153
- 238000000034 method Methods 0.000 title claims abstract description 39
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- 238000009434 installation Methods 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims description 96
- 238000001816 cooling Methods 0.000 claims description 17
- 230000001050 lubricating effect Effects 0.000 claims description 16
- 239000004576 sand Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000007812 deficiency Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
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- 238000003754 machining Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
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Classifications
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- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
-
- 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)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention proposes a kind of tension force ball spinning method, prepared by spinning blank, spinning machine prepares, determine spinning program, the installation of spinning blank and spinning and etc. prepare special thin-wall tube-shaped element.The present invention uses outside spinning technology combination ball spinning and spinning with tension, meets the high integral spinning forming of special thin-wall tube-shaped element precision height, high yield rate, production efficiency；The present invention increases tension function in ball spinning technique, flow formed part bears the effect of a longitudinal tension force all the time in spinning process, solve special thin-wall tube-shaped element wall thickness it is excessively thin caused by workpiece stiffness deficiency, material swelled before spinning roller during rotary pressure deformation it is excessive, drop off, bulge phenomena such as.
Description
Technical field
The present invention relates to a kind of tension force ball spinning method, belong to metal-pipe spinning field shaping technique.
Background technology
Ball spinning is a kind of continuous Local Multipoint plastic deformation shaping technique, belongs to shear spinning category.It is shaped
Area is relatively small, and mechanical loading is smaller and circumferentially symmetrical, and the tube wall thickness being process by ball spinning is up to 0.04-
0.2 millimeter, Wall-Thickness Difference allows for 5 microns, and draw ratio 30-60, dimensional accuracy is very high, thus is widely used in navigating in aviation
My god, machinery and civilian industry field accurate ultra-thin tube production.
The characteristics of due to ball bearing mechanism structure and function, in rotation minor diameter spy thin-walled (50 millimeters of diameter, the milli of wall thickness 0.2
Rice is following) cylindrical member when, the pressure of ball spinning acts directly on outer surface of pipe fittings, and is passed along wall thickness direction by outer layers towards inner layers
Pass, outer layer deflection is more than internal layer, and this unhomogeneity of deformation easily causes the accumulation of metal in front of ball, protuberance even peeling
The problems such as.
Traditional spinning roller flow turning can produce thin-wall tube-shaped element (60 millimeters of diameter, 0.5 millimeter of the wall thickness of large-size
More than), but for the processing of special thin-walled (below 50 millimeters of diameter, 0.2 millimeter of wall thickness) cylindrical member, since workpiece stiffness is very low,
Workpiece easily produces phenomena such as bulge, tear, and machining accuracy and surface smoothness are relatively low, is not suitable for special thin-wall tube-shaped
The processing of part.
For solve spinning when material during rotary pressure deformation before ball protuberance, unsmooth flowing the problems such as, Ma Shicheng etc.
People proposes a kind of thinking for applying longitudinal pulling force in spinning blank free end；《A kind of dextrorotation spin-on process》In mention a kind of
Power spin-on process, applies identical tension, floating core die and tubular member synchronous rotary in tubular member free end.But this main pin of mode
Processing to great diameter and long thin-wall barrel, for special thin-wall tube-shaped element, favourable axis is born under axial tensile force effect
Xiang Li, while unavoidably it is subject to radial load so that special thin-wall tube-shaped element torsional deflection, have impact on the shape and size essence of product
Degree.
The content of the invention
It is an object of the invention to overcome the shortage of prior art, there is provided a kind of precision height, high yield rate, production efficiency are high
Tension force ball spinning method.
The technical solution of the present invention：A kind of tension force ball spinning method, is realized by following steps：
The first step, spinning blank prepare, and the spinning blank includes flanging flange end and closing in end；
Thin plate bending is welded into the spinning blank of straight tubular construction, and shell nosing treatment is carried out to one end, the other end carries out
Flange processing, level weld seam requirement meet II grade of weldquality standard；
The specific size of spinning blank is set as techniques well known, and content refers to the old of National Defense Industry Press's publication
State and first wait work《Shear spinning technique and equipment》Deng document.
It is specific as follows：
(1) spinning blank wall thickness t is determined1
According to the spinning force size of spinning machine, the limit of the material of wall thickness requirement, institute's spinning according to spinning product subtracts
The arrangement etc. of thin rate, spinning pass calculates the wall thickness t of spinning blank1。
(2) the theoretical length L of blank is determined1
According to the length of special thin-wall tube-shaped element final product structure, wall thickness and spinning blank wall thickness t identified above1, according to
Blank theoretical length is calculated according to the isometric principle of flow formed part, and considers the technique that installation positioning is reserved at spinning blank both ends
Surplus determines the theoretical length L of blank1。
(3) the outside diameter Φ D of spinning blank are determined2And internal diameter Φ D1
According to the outside diameter of core, requirement of the spinning blank by core is considered, increase surplus.Spinning blank internal diameter Φ D1It is logical
It is often the outside diameter Φ D of core0The surplus of+0.02mm or so；Spinning blank outside diameter Φ D2Usually spinning blank internal diameter Φ D1+
2t1.The outside diameter Φ D of core0Determine, the footpath of rising according to diameter after the internal diameter and spinning of special thin-wall tube-shaped element final product structure
Amount considers, is usually that the internal diameter of final product structure subtracts the mass runoff that rises of diameter.
Second step, spinning machine prepare,
The spinning machine includes lathe bed, line slideway, axis system, shedding mechanism, longitudinal feed system, tensioner
Structure and longitudinal slide body mechanism, the tension mechanism include sound conversion equipment, tensioning guide rod and hydraulic cylinder, sound conversion equipment
It is connected by being tensioned guide rod with hydraulic cylinder, hydraulic cylinder provides longitudinal tension force, drives sound conversion equipment lengthwise movement；
The sound conversion equipment includes contiguous block, stretcher, rear end cap and bearing, and contiguous block passes through bearing and tensioning
Device connects, and stretcher is only vertically moved, and longitudinal tension force is passed to stretcher by bearing, and contiguous block passes through rear end cap
It is connected with tensioning guide rod；
3rd step, rotary pressure process parameter selection, determines spinning program；
Rotary pressure process parameter selection includes ball diameter, reduction, feed rate, speed of mainshaft etc., and (rotary pressure process parameter selects
Techniques well known is selected as, the statement that particular content refers to National Defense Industry Press's publication first waits work《Shear spinning technique
With equipment》), spinning program is worked out based on rotary pressure process parameter and track.
4th step, the installation of spinning blank,
A4.1, spinning blank are sleeved on the core of spinning machine；
A4.2, tension mechanism make the stretcher clamping spinning blank flanging of tension mechanism to core direction length feed
Flange end；
Stretcher drives spinning blank length feed during spinning, and with spinning blank synchronous rotary, make spinning blank only by
Axial force, from radial load, so as to avoid the torsional deflection of workpiece.
A4.3, tension mechanism continue length feed, until spinning blank closing in end is contacted with core end；
5th step, spinning is carried out according to the spinning program of the 3rd step setting,
A5.1, longitudinal slide body mechanism vertically move, and make the ball length feed of longitudinal slide body mechanism to spinning procedure stipulation
Initial position, open cooling and lubricating；
A5.2, spinning the blank synchronous rotary under the drive of axis system, longitudinal slide body mechanism longitudinal direction in rotary course
Feeding, the direction of motion of longitudinal slide body mechanism is identical with material flow direction during spinning blank spinning, and tension mechanism speed is automatic
Adaptation follows longitudinal slide body mechanism to vertically move, while it is identical with length feed direction to be applied to spinning blank flanging flange end
Tension force；
Tension mechanism works under the pattern of constant-tension, realizes that speed adapts to follow longitudinal slide body mechanism longitudinally to move automatically
It is dynamic, while it is applied to the spinning blank flange end constant-tension identical with length feed direction.The speed of tension mechanism is by hydraulic pressure
Default, typically much deeper than material flow rate, disclosure satisfy that the demand of speed adaptive；Constant of tension mechanism application
Power size is set according to technological requirement, and the more general tension force of the constant-tension is bigger, its size is σ1=0.6 σ2~0.7 σ2, σ2For
The yield strength of spinning blank material, σ2For the yield strength of spinning blank material, wall thickness is thinner, and tension force is bigger.
A5.3, longitudinal slide body mechanism drive ball to vertically move, and spinning blank is rotated while longitudinally through ball
Gap between spinning mandrel, realizes the spinning of a passage of workpiece；
A5.4, according to spinning program finishes execution after, tension mechanism is retracted, shedding mechanism drive spinning blank be moved out
Core, removes workpiece.
Further, following process is further included, product is cut to both ends surplus on the basis of outside diameter after centering, meets product
Design requirement.
Longitudinal slide body mechanism of the second step spinning machine includes ball bearing mechanism and babinet, and ball bearing mechanism is installed on babinet
Interior, babinet vertically moves ball bearing mechanism under longitudinal feed system drive, and lateral position is fixed；The ball bearing mechanism bag
Ball, sand frame, rotation mould and rotation die sleeve are included, ball is fixed on rotation die sleeve by sand frame and rotation mould, and rotation die sleeve is fixed on babinet；
Cooling and lubricating mechanism is processed on the sand frame, rotation mould and rotation die sleeve, the cooling and lubricating mechanism includes processing
Annular of the annular ditch groove and deflector hole in communication and processing of lubrication hole, processing on rotation mould on sand frame in rotation die sleeve
Groove and groove in communication.
The beneficial effect of the present invention compared with prior art：
(1) present invention uses outside spinning technology combination ball spinning and spinning with tension, meets special thin-walled (being not more than 0.1mm)
The high integral spinning forming of cylindrical member precision height, high yield rate, production efficiency；
(2) present invention increases tension function in ball spinning technique, and flow formed part bears one all the time in spinning process
The effect of a longitudinal tension force, solve special thin-wall tube-shaped element wall thickness it is excessively thin caused by workpiece stiffness deficiency, material is in rotary pressure deformation
During swell before spinning roller it is excessive, drop off, bulge phenomena such as；
(3) tension mechanism of spinning machine of the present invention makes special thin-wall tube-shaped element in axial tensile force by sound conversion equipment
Favourable axial force is born under effect, avoids unnecessary radial load, the problems such as special thin-wall tube-shaped element torsional deflection is solved, carries
The high form and dimensional precision of special thin-wall tube-shaped element；
(4) spinning machine of the present invention uses new cooling and lubricating system, is the good combination of tension mechanism and ball bearing mechanism
Lay a good foundation, solve the problems, such as that tension mechanism disturbs ball bearing mechanism cooling and lubricating, the device space is greatly saved and is manufactured into
This；
(5) method that the present invention uses HYDRAULIC CONTROL SYSTEM Tensity size and speed speed, it is simple in structure, can be very easily
Realize spinning with tension.
Brief description of the drawings
Fig. 1 is integral structure layout's schematic diagram of the present invention；
Fig. 2 is tension mechanism schematic diagram of the present invention；
Fig. 3 is sound conversion equipment sectional view of the present invention；
Fig. 4 is rotary pressing processing schematic diagram of the present invention；
Fig. 5 is ball bearing mechanism schematic diagram of the present invention；
Fig. 6 is present invention rotation mould schematic diagram, and a is side view, and b is the A-A sectional views of a；
Fig. 7 is sand frame schematic diagram of the present invention, and a is side view, and b is the A-A sectional views of a；
Fig. 8 is spinning blahk structure schematic diagram of the present invention；
Fig. 9 is flow chart of the present invention.
Embodiment
With reference to instantiation and attached drawing, the present invention is described in detail.
The special thin-wall tube-shaped element of processing, its wall thickness 0.1mm, factory length L are 136mm, and product outside diameter φ D are 52.6mm, material
Expect for 304 stainless steel alloys.
Preparation process is realized as shown in Fig. 4,9 by following steps：
1st, spinning blank is prepared
(1) Blank Design
It is straight tube shape oral area turnup structure as shown in Figure 8 by spinning Blank Design, its wall thickness t1According to spinning machine
Spinning force size, the wall thickness requirement of spinning product, the calculating such as the design of limit attenuating rate, spinning pass of the material rotation of institute's spinning
The wall thickness t of dabbing base1, blank length L1Obtained by according to isometric computational methods and considering reserved process allowance COMPREHENSIVE CALCULATING, its hair
The wall thickness t of base1=0.3mm, internal diameter Φ D1It is designed as 52.4mm, outside diameter Φ D2It is designed as 53mm, length L1For 87mm, both ends work
Skill surplus is respectively 25mm.
(2) spinning blank is processed
By the spinning blank requirement from 304 stainless sheet steels that producer purchases according to design, straight tubular construction is welded into
Spinning blank, and shell nosing treatment is carried out to one end oral area, other end oral area is turned-out, is processed into size, the shape of requirement, is easy to
Blank is installed.Thin plate bending spinning blank machining-size, required precision is as follows：
Blank thickness：0.3mm
Blank outside diameter：53mm
Blank internal diameter：52.4mm
Blank length：87mm
Flange height：4mm
Closing in outside diameter：33~37mm
2nd, spinning machine prepares
Spinning machine is as shown in Figure 1, including lathe bed 1, line slideway 11, axis system, shedding mechanism, length feed system
System, tension mechanism and longitudinal slide body mechanism, lathe bed 1 is arranged above connects various mechanical parts and guide rail, bears various force and works
It can realize, axis system is fixed on lathe bed 1, and longitudinal slide body mechanism moves on line slideway 11.Lathe bed 1 passes through fang bolt
Connected with ground, improve system stiffness.Lathe bed 1 is casting or welding structure, it is contemplated that the problems such as manufacturing, transporting, can be divided into more
Finally rigid connection forms Duan Jiagong.
Tension mechanism is as shown in Fig. 2, including sound conversion equipment 13, tensioning guide rod 16 and hydraulic cylinder 17, sound converting means
Put 13 and be connected by being tensioned guide rod 16 with hydraulic cylinder 17, hydraulic cylinder 17 provides longitudinal tension force, drives the longitudinal direction of sound conversion equipment 13
Movement.Tension mechanism can realize spinning with tension, and the hydraulic cylinder 17 of tension mechanism is operated under permanent moment of torsion maximum (top) speed operating mode,
With making tension mechanism speed adaptive relative to longitudinal slide body mechanism opposite direction move, while be applied to spinning blank flange end with
The opposite identical tension in length feed direction.
Hydraulic cylinder 17 uses electrohydraudic servomechanism drive cylinder, and cylinder rod is fixed, and cylinder body movement promotes sound conversion equipment
13 vertically move, and encoder detection feedback, forms closed-loop control system.
Sound conversion equipment 13 is as shown in figure 3, including contiguous block 1301, stretcher 1304, drive end bearing bracket 1302, rear end cap
1307th, bearing 1303, preceding oil baffle disc 1305 and rear oil baffle disc 1306, contiguous block 1301 are connected by bearing 1303 and stretcher 1304
Connect, stretcher 1304 is only vertically moved, and longitudinal tension force is passed to by stretcher 1304, stretcher by bearing 1303
The flanging flange end of 1304 internal boss clamping spinning blank 10, drives 10 length feed of spinning blank during spinning, and with
10 synchronous rotary of spinning blank, makes spinning blank 10 only by axial force, from radial load, become so as to avoid the torsion of workpiece
Shape, contiguous block 1301 are connected by rear end cap 1307 with tensioning guide rod 16, and drive end bearing bracket 1302 passes through nut and 1301 phase of contiguous block
Even, preceding oil baffle disc 1305 is connected to stretcher 1304 through round nut, and rear oil baffle disc 1306 passes through bearing 1303 and stretcher 1304
The shaft shoulder is spacing, and drive end bearing bracket 1302, rear end cap 1307, preceding oil baffle disc 1305 and rear oil baffle disc 1306, which play, preferably prevents oil
Liquid splashes and the effect of isolation external dust.Ball bearing 1303 uses angular contact ball bearing.
Longitudinal slide body mechanism includes ball bearing mechanism 14 and babinet 15, and ball bearing mechanism 14 is installed in babinet 15, under babinet 15
Portion is connected with longitudinal feed system, vertically moves ball bearing mechanism 14 under longitudinal feed system drive, and lateral position is fixed.
Ball bearing mechanism 14 is as shown in figure 5, including ball 1402, sand frame 1401, rotation mould 1403 and rotation die sleeve 1404, ball
1402 are fixed on rotation die sleeve 1404 by sand frame 1401 and rotation mould 1403, and rotation die sleeve 1404 is fixed on babinet 15.Longitudinal direction into
Servomotor 19 to system drives synchronous cog belt 3 to rotate, and drives longitudinal slide body mechanism to be vertically moved along line slideway 11, from
And ball 1402 is vertically moved, the frictional force produced between the effect and workpiece during work due to spinning force drives ball passive
Rotation, makes workpiece bear the spinning force and dynamic balance of circumferential equally distributed ball.
To improve the machining accuracy and surface smoothness of workpiece, spinning machine should all possess cooling and lubricating system.But this
The spinning with tension technology that invention uses is combined with ball spinning technology, since tension mechanism acts on the oral area of workpiece, is located at
The front of ball bearing mechanism, both distances are very short, in the way of cooling and lubricating mechanism can not be squeezed into by conventional outside.Due to opening
Force mechanisms are acted on workpiece at the same time with ball bearing mechanism, and the size of workpiece is again very small, can not use being sprayed from outside for routine
Mode carry out cooling and lubricating.
The cooling and lubricating mechanism of the present invention and conventional difference, sand frame 1401, rotation mould 1403 and rotation in ball bearing mechanism 14
Cooling and lubricating mechanism is processed on die sleeve 1404.Shown in cooling and lubricating mechanism such as Fig. 5,6 (a, b), 7 (a, b), including processing is in rotation mould
Annular ditch groove 14031 and in communication deflector hole 14032 and of the lubrication hole 14041, processing of set 1404 on rotation mould 1403
Process the annular groove 14011 on sand frame 1401 and groove 14012 in communication.
Cooling-lubricant is first injected into the annular ditch groove 14031 of rotation mould 1403 by the lubrication hole 14041 of rotation die sleeve 1404,
The annular groove 14011 of sand frame 1401 is flowed into by deflector hole 14032 again, then by the uniformly distributed groove 14012 on sand frame,
Flow on ball 1402, complete cooling and lubricating process., can be with using such a by the way of ball bearing mechanism sets cooling and lubricating mechanism
Cooling-lubricant is injected inside ball bearing mechanism so that cooling-lubricant directly washes away ball and workpiece spinning in process
Deformed area, is effectively reduced friction of workpiece fever, ensures workpiece accuracy.
(the wide W of annular ditch groove 140311, deep H1)、φD1Deflector hole 14032, (the wide W of annular groove 140112, deep H2), ditch
(the wide W of groove 140123, deep H2) size design, be considered as that the big calorimetric for being plastically deformed generation in spinning process can be played compared with
Good cooling and lubricating effect, generally should ensure that the flow of coolant is not less than 20L/min.
Longitudinal feed system includes ball-screw 12, spindle motor 2, servomotor 19, bearing block 18 and synchronous cog belt
3, servomotor 19 drives the ball-screw 12 being installed on bearing block 18 to rotate by synchronous cog belt 3, so as to drive longitudinal direction
Slide body mechanism is vertically moved on line slideway 11.
Longitudinal feed system is vertically moved using ball-screw rotation driving babinet, and encoder detection feedback, forms closed loop
Control system, using double ball-screws, both ends are arranged below babinet.
Axis system is as shown in Figure 1, including main shaft 4, main spindle box 5 and core 9, and main shaft 4 is installed on main spindle box 5, longitudinal direction
Position is fixed, and main spindle box 5 is installed on lathe bed 1, and 4 one end of main shaft installation core 9, core 9 and main shaft 4 are longitudinally fixed, and main shaft 4 is another
One end drives main shaft 4 to rotate by spindle motor 2 by synchronous cog belt 3.
Main spindle box 5 passes through stress-relieving by beat treatment using steel plate welding blank.2 power of spindle motor is set according to load
Meter determines that motor works operation below rated power, motor feels hot is reduced to minimum.The speed of mainshaft has electrodeless tune
Speed, uniformly linear function, meet the requirement of spinning process.9 one end of core is connected with main shaft, and is in close contact with discharging push plate, separately
One end installation spinning blank 10.
Shedding mechanism is as shown in Figure 1, including discharging push plate 8, discharging guide rod 7 and hydraulic cylinder 6, hydraulic cylinder 6 is installed
Above main spindle box 5, drive discharging push plate 8 to move by discharging guide rod 7, realize spinning blank 10 from the dismounting on core 9.
3rd, spinning process selects
Spinning process is set according to the working ability of the limit attenuating rate of 304 stainless steels, raw material preparation and spinning machine
Meter, selects dextrorotation to reduce feed distance, reduction tail pushes work, raising efficiency.According to spinning blank wall thickness t1The hair of=0.3mm
Base, a spinning to 0.1mm, reduction 66.7%.
Feed speed 1000mm/min；
Speed of mainshaft 800r/min；
Tension force is 0.8KN.
4th, spinning blank is installed
Spinning blank 10 is sleeved on outside the core 9 of spinning machine, the 1304 clamping spinning blank 10 of stretcher of tension mechanism
Flanging flange end, closing in end is contacted with core end.
5th, spinning (as shown in figure 4, right side is longitudinal slide body mechanism)
Specific operation process is as follows：
(1) it is moved to defined lengthwise position according to establishment spinning program tension mechanism and longitudinal slide body mechanism；
(2) spinning is started according to spinning program, spinning blank synchronously rotates with spindle, and tension mechanism turns up in spinning blank
Side flange end applies an identical tension, and coolant is begun to cool down；
(3) longitudinal slide body mechanism vertically moves to the left, rotate spinning blank while to the left longitudinally through ball with
The gap of setting between core, tension mechanism apply spinning blank tension force, tension force 0.8KN, direction and main direction of feed
Identical, tension mechanism translational speed is adaptive, and velocity magnitude is determined by the reduction of active feeding and material, to be acted
With spinning blank has revolved a time under two-way longitudinal direction effect by program；
(4) after according to spinning program finishes execution, tension mechanism is retracted to the right, and shedding mechanism drives spinning blank to move right
It is dynamic to depart from core, remove workpiece.
6th, following process
Product is cut to both ends surplus on the basis of outside diameter after centering, product is met design requirement.
Unspecified part of the present invention is known to the skilled person technology, can refer to National Defense Industry Press's publication
Statement first wait work《Shear spinning technique and equipment》.
Claims (4)
- A kind of 1. tension force ball spinning method, it is characterised in that realized by following steps：The first step, spinning blank prepare, and the spinning blank includes flanging flange end and closing in end；Second step, spinning machine prepare,The spinning machine include lathe bed (1), line slideway (11), axis system, shedding mechanism, tension mechanism, longitudinal direction into To system and longitudinal slide body mechanism, the tension mechanism includes sound conversion equipment (13), tensioning guide rod (16) and hydraulic cylinder (17), sound conversion equipment (13) is connected by being tensioned guide rod (16) with hydraulic cylinder (17), and hydraulic cylinder (17) provides longitudinal tension force, Sound conversion equipment (13) lengthwise movement is driven, the sound conversion equipment (13) includes contiguous block (1301), stretcher (1304) it is connected with bearing (1303), contiguous block (1301) by bearing (1303) with stretcher (1304), makes stretcher (1304) only vertically move, and longitudinal tension force is passed to by stretcher (1304) by bearing (1303)；3rd step, rotary pressure process parameter selection, determines spinning program；4th step, the installation of spinning blank,A4.1, spinning blank are sleeved on the core of spinning machine；A4.2, tension mechanism make the stretcher clamping spinning blank flanging flange of tension mechanism to core direction length feed End；A4.3, tension mechanism continue length feed, until spinning blank closing in end is contacted with core end；5th step, spinning is carried out according to the spinning program of the 3rd step setting.
- A kind of 2. tension force ball spinning method according to claim 1, it is characterised in that：5th step passes through following step It is rapid to realize,A5.1, longitudinal slide body mechanism vertically move, and make ball length feed the rising to spinning procedure stipulation of longitudinal slide body mechanism Beginning position, open cooling and lubricating；A5.2, spinning the blank synchronous rotary under the drive of axis system, longitudinal slide body mechanism length feed in rotary course, The direction of motion of longitudinal slide body mechanism is identical with material flow direction during spinning blank spinning, tension mechanism speed automatically adapt to Vertically moved with longitudinal slide body mechanism, while be applied to spinning blank flanging flange end identical with length feed direction Power；A5.3, longitudinal slide body mechanism drive ball to vertically move, and spinning blank is rotated while longitudinally through ball and rotation The gap between core is pressed, realizes the spinning of a passage of workpiece；A5.4, according to spinning program finishes execution after, tension mechanism is retracted, shedding mechanism drive spinning blank be moved out core Mould, removes workpiece.
- A kind of 3. tension force ball spinning method according to claim 2, it is characterised in that：Tensioner in the step A5.2 It is σ that structure, which provides longitudinal tension force size,1=0.6 σ2~0.7 σ2, σ2For the yield strength of spinning blank material.
- A kind of 4. tension force ball spinning method according to claim 1, it is characterised in that：Longitudinal gliding mass in the second step Mechanism includes ball bearing mechanism (14) and babinet (15), and ball bearing mechanism (14) is installed in babinet (15), babinet (15) longitudinal direction into Ball bearing mechanism (14) is vertically moved under being driven to system；The ball bearing mechanism (14) includes ball (1402), sand frame (1401), rotation mould (1403) and rotation die sleeve (1404), ball (1402) it is fixed on by sand frame (1401) and rotation mould (1403) on rotation die sleeve (1404), rotation die sleeve (1404) is fixed on babinet (15) on；Cooling and lubricating mechanism is processed on the sand frame (1401), rotation mould (1403) and rotation die sleeve (1404), the cooling is moistened Sliding mechanism includes annular ditch groove of lubrication hole (14041), processing of the processing in rotation die sleeve (1404) on rotation mould (1403) (14031) and deflector hole in communication (14032) and process annular groove (14011) on sand frame (1401) and connect therewith Logical groove (14012).
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|---|---|---|---|
| CN201611149197.0A CN108015146A (en) | 2016-12-14 | 2016-12-14 | A kind of tension force ball spinning method |
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| CN201611149197.0A CN108015146A (en) | 2016-12-14 | 2016-12-14 | A kind of tension force ball spinning method |
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| CN108015146A true CN108015146A (en) | 2018-05-11 |
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| CN111036746A (en) * | 2019-12-13 | 2020-04-21 | 王海锋 | Wave wheel edge covering process |
| CN112642911A (en) * | 2020-12-02 | 2021-04-13 | 浙江上风高科专风实业股份有限公司 | Non-mold numerical control spinning equipment for air inlet of fan and using method of non-mold numerical control spinning equipment |
| CN113118286A (en) * | 2021-05-12 | 2021-07-16 | 江苏元奇数控科技有限公司 | Spinning rapid forming process of rotational molding die |
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Application publication date: 20180511 |