CN105328045A - Pre-hole-punching rivet-free constant-temperature stamping die capable of performing positioning and control method thereof - Google Patents
Pre-hole-punching rivet-free constant-temperature stamping die capable of performing positioning and control method thereof Download PDFInfo
- Publication number
- CN105328045A CN105328045A CN201510944778.2A CN201510944778A CN105328045A CN 105328045 A CN105328045 A CN 105328045A CN 201510944778 A CN201510944778 A CN 201510944778A CN 105328045 A CN105328045 A CN 105328045A
- Authority
- CN
- China
- Prior art keywords
- die shoe
- cooling fluid
- drift
- temperature
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- 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
- B21D37/16—Heating or cooling
-
- 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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
- B21D39/034—Joining superposed plates by piercing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses a pre-hole-punching rivet-free constant-temperature stamping die capable of performing positioning. The stamping die comprises a punch, a lower die holder and a hydraulic cylinder. The punch is of a circular truncated cone structure. The radius of the upper surface of the punch is larger than that of the lower surface of the punch. The center of the lower die holder is a containing cavity. The upper portion of the containing cavity is a regular circular truncated cone cavity, and the lower portion of the containing cavity is provided with a through hole. An upper end opening of the regular circular truncated cone cavity is formed in the upper plane of the lower die holder, and the lower end of the regular circular truncated cone cavity is communicated with the through hole. The hydraulic cylinder is located in the through hole. A piston of the hydraulic cylinder stretches out of the upper end opening of the regular circular truncated cone cavity in the non-stamping process. The punch and the lower die holder are both provided with a cooling channel and are provided with a temperature sensor and a controller. The invention further discloses a control method of the pre-hole-punching rivet-free constant-temperature stamping die capable of performing positioning. The pre-hole-punching rivet-free constant-temperature stamping die capable of performing positioning achieves connection between high-strength steel and aluminum alloy without rivets and has the advantages that accurate positioning can be achieved, and meanwhile riveting accuracy is not affected due to the cooling punch and the die.
Description
Technical field
The present invention relates to without rivet diel field, be specifically related to a kind of orientable pre-punched hole without the diel of rivet constant temperature and control method thereof.
Background technology
In order to pursue body lightening, under the prerequisite not changing body specifications, by optimizing body structure, bodywork parts manufacture and Joining Technology can be upgraded, substitute the methods such as traditional Medium And Low Strength Steels with light material and realize body structure lightweight.High-strength steel has the advantages such as high loss of weight potentiality, high impact absorption energy, high-fatigue strength, high formability and low degree anisotropy, and aluminium alloy has that quality is light, corrosion-resistant, specific strength is high, easy processing, surface aesthetic and the advantage such as cost recovery is low.So present vehicle body starts widely apply high-strength steel and aluminium alloy.But along with the development of heat forming technology, the high-strength steel intensity produced is also more and more higher, and super-high strength steel can reach about 1600Mpa, in traditional self-pierce riveting Joining Technology, rivet has been difficult to thrust steel plate and has formed effective joint.So just occurred that a kind of pre-punched hole is without rivet method, namely in heat forming processes by the punching in advance of high-strength steel steel plate, then in riveting process, aluminium sheet to be pressed in steel plate hole made in advance thus to form joint.Wherein, location between hole made in advance on steel plate and drift is a key point, because aluminium sheet is placed on above steel plate, so just can't see the position in hole on steel plate, if locate inaccurate, just aluminium sheet can accurately be pressed in the hole of steel plate and form effective joint.Therefore, the present invention devises a kind of orientable pre-punched hole without the diel of rivet constant temperature.
Summary of the invention
The present invention has designed and developed a kind of orientable pre-punched hole without the diel of rivet constant temperature.
An object of the present invention to solve in prior art because fusing point and thermal expansion coefficient difference are comparatively large when the dissimilar metal spot welding such as steel and aluminium alloy are connected, and the metallic compound that during welding, solder joint appearance is hard and crisp, is difficult to the problem realizing welding point effectively.
Two of object of the present invention solves in prior art to be difficult to pinpoint problem between drift and pre-punched hole.
The present invention has has also designed and developed the control method of a kind of orientable pre-punched hole without the diel of rivet constant temperature.Object solves drift and mould temperature after long-time punching operation in prior art to raise, thus the impact riveted joint degree of accuracy, and then affect the problem of forming quality of riveting parts, and solve the problem making cooling fluid fine adjustment.
The present invention has the connection realizing between high-strength steel and aluminium alloy without rivet, and can the feature of precise positioning, meanwhile, also has and makes the impregnable feature of the riveted joint degree of accuracy by cooling drift and mould.
Technical scheme provided by the invention is:
A kind of orientable pre-punched hole, without the diel of rivet constant temperature, comprising:
Drift, it is circular platform type structure, and described drift upper surface radius is greater than described drift lower surface radius;
Die shoe, its center is container cavity, and described container cavity top is positive circular platform type chamber, and bottom is through hole; Positive circular platform type chamber upper end open is arranged on plane on described die shoe, and lower end is communicated with described through hole;
Hydraulic cylinder, it is arranged in described through hole; The piston of described hydraulic cylinder stretches out described positive circular platform type chamber upper end open when non punching;
Wherein, described drift and described die shoe are respectively arranged with cooling fluid passage, and set temperature sensor and controller; When temperature exceedes first threshold, controller controlled cooling model liquid enters cooling fluid passage; When temperature is lower than Second Threshold, cooling fluid is found time.
Preferably, also comprise base, described die shoe is arranged on described base.
Preferably, described die shoe is divided into fixing die shoe and movable die shoe along described container cavity symmetry; Described base is also provided with guide rail, and described movable die shoe along guide rail movement, thus can close with described fixing die shoe and is separated.
Preferably, described movable die shoe side connecting power device, it is for making described movable die shoe along described guide rail movement.
Preferably, annular cooling fluid passage is set in described drift.
Preferably, described fixing die shoe and/or described movable die shoe upper end edge through hole are around arranging cooling fluid passage.
Preferably, the cooling fluid passage inside of described die shoe arranges memorial alloy deflection plate, it is arranged multiple through hole, and when described cooling fluid passage fluid temperature (F.T.) is higher than distortion threshold value, described deflection plate distortion is 15 ° ~ 20 ° angles with cooling fluid passage wall; When described cooling fluid passage fluid temperature (F.T.) road is lower than distortion threshold value, described deflection plate laminating cooling fluid passage wall.
Orientable pre-punched hole, without a control method for rivet constant temperature diel, comprises the steps:
Step one, when temperature sensor monitors is to drift underlaying surface temperature T
1>=T
atime, the cooling fluid in drift opened by controller; When temperature sensor monitors is to die shoe upper surface temperature T
2>=T
btime, the cooling fluid in die shoe opened by controller; Wherein, T
1for drift underlaying surface temperature, T
2for die shoe upper surface temperature, T
afor drift underlaying surface temperature threshold value, T
bfor die shoe upper surface temperature threshold;
The liquid inlet volume of step 2, calculating drift
calculate the liquid inlet volume of die shoe
controller controls the liquid inlet volume entering drift and die shoe; Wherein, A is heat conduction correction coefficient, K
1for drift thermal conductivity factor, K
2for die shoe thermal conductivity factor, S
1for cooling fluid passage vertical direction cross-sectional area in drift, S
2for cooling fluid passage vertical direction cross-sectional area in die shoe, T
afor drift underlaying surface temperature threshold value, T
bfor die shoe upper surface temperature threshold, T
1for drift underlaying surface temperature, T
2for die shoe upper surface temperature, η is heat transfer efficiency, ρ
wfor cooling fluid density, C
wfor cooling fluid specific heat capacity, Δ T
w1for cooling fluid liquid outlet and the inlet temperature difference of drift, Δ T
w2for cooling fluid liquid outlet and the inlet temperature difference of die shoe, e is the truth of a matter of natural logrithm;
Step 3, as temperature sensor monitors drift underlaying surface temperature T
1< T
atime, controller cuts out the cooling fluid in drift, when temperature sensor monitors is to die shoe upper surface temperature T
2< T
btime, controller cuts out the cooling fluid in die shoe; As temperature sensor monitors drift underlaying surface temperature T
1< 0.95T
atime, the cooling fluid of finding time in drift, when temperature sensor monitors is to die shoe upper surface temperature T
2< 0.95T
btime, the cooling fluid of finding time in die shoe.
Preferably, in described step 2, when temperature sensor monitors is to die shoe upper surface temperature T
2> 1.18T
btime, the now liquid inlet volume Q of die shoe
w2be corrected to Q
w2', Q
w2'=(0.0002lnQ
w2+ 1.51) Q
w2 0.93.
Preferably, the cooling fluid passage inside in die shoe also arranges memorial alloy deflection plate, and when described cooling fluid passage fluid temperature (F.T.) is higher than distortion threshold value, described deflection plate distortion is 15 ° ~ 20 ° angles with cooling fluid passage wall; When described cooling fluid passage fluid temperature (F.T.) is lower than distortion threshold value, described deflection plate laminating cooling fluid passage wall.
The beneficial effect that the present invention is had compared with prior art:
1. aluminium alloy due to have higher thermal conductivity, surface oxidizable, therefore traditional spot welding Joining Technology is difficult to the connection realized between alloy plate material, when particularly steel is connected with dissimilar metal spot welding such as aluminium alloys due to fusing point and thermal expansion coefficient difference larger, during welding there is hard and crisp metallic compound in solder joint, is difficult to realize welding point effectively; Pre-punched hole of the present invention adopts the self-piercing riveting of mechanical connection effectively to solve this problem without rivet diel, realizes the connection between high-strength steel and aluminium alloy;
2. compared with self-pierce riveting production technology in existing industrial production, the present invention adopts without rivet mode, by the location of accurate drift and pre-punched hole, exactly in the hole of aluminium sheet press-in steel plate, form effective joint, joint better effects if, tensile strength is higher, and cost is also lower;
3. by coaxially arranged to drift, piston and die, the diameter in the hole that the diameter of piston is made in advance with steel plate is identical, punching press secondary piston is up exceeds die one segment distance, borehole jack made in advance on high-strength steel steel plate can be realized on piston the accurate location in hole on drift and steel plate, simply be easy to realize, guarantee to stamp out qualified riveted joint;
4. after a large amount of punching press, drift inherently heats up, and drift not only can be made to expand thus affect the dimensional accuracy of riveting parts; The forming quality of riveting parts also can be affected because of very high temperature, by arranging cooling fluid passage and precisely being controlled by the flow of temperature to cooling fluid of monitoring drift lower surface, and the temperature of drift lower surface can be fluctuated up and down in threshold value by the adjustment of coolant rate, cooling process is carried out to drift, can riveting quality be ensured;
5. in die shoe, arrange cooling fluid passage and precisely controlled by the flow of temperature to cooling fluid of monitoring die shoe upper surface, and the temperature of die shoe upper surface can be fluctuated up and down in threshold value by the adjustment of coolant rate, thus ensure the size of riveted joint; Because the round platform hole in overall die shoe is the region that aluminium sheet punching press is filled, if the too high intensity that can affect this part position of temperature, cooling fluid passage can keep the constant temperature of this part, thus proof strength, also extend the mold use life-span simultaneously.
Accompanying drawing explanation
Fig. 1 is the full sectional view of front view before riveting set of the present invention riveted joint;
Fig. 2 is the full sectional view that riveting set of the present invention has riveted rear front view;
Fig. 3 is the axonometric projection graph that riveting set of the present invention has riveted when rear die shoe is opened;
Fig. 4 is drift front view of the present invention;
Fig. 5 is the sectional view of drift of the present invention along A-A face;
Fig. 6 is the front view of die shoe of the present invention;
Fig. 7 is of the present invention when cooling fluid passage fluid temperature (F.T.) higher than memorial alloy distortion threshold value, the sectional view along B-B face of fixing die shoe or movable die shoe.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to description word to make those skilled in the art.
As shown in Fig. 1 ~ 7, the invention provides a kind of orientable pre-punched hole without the diel of rivet constant temperature, comprise drift 110, die shoe, positioning hydraulic cylinders, hole on high-strength steel steel plate 140 is the diameter gone out at the position of needs riveted joint in advance in hot forming operation is the manhole of 9.9mm ~ 10mm, wherein, drift 110 is truncated cone-shaped structural member, the axis of great circle of upper surface is 10mm, the axis of small circle of lower surface is 8mm, is highly 15mm, and the centre bore being placed in blank holder 120 is interior for being slidably connected, blank holder 120 is annulus bodily form structural member, be highly 15mm, outside diameter is 20mm, and interior circular diameter is 10mm, die shoe entirety is square shape, the length of side is 80mm, a circular port is had from the center of lower surface, the degree of depth in hole is 79mm, namely from die holder lower surface until distance upper surface 1mm, bore dia is 14mm ~ 16mm, the hole of a truncated conical shape is down opened in the upper surface center of die shoe, the axis of small circle of round platform is 10mm, axis of great circle is 12mm, bus angle of inclination is 30 ° ~ 60 °, be highly 1mm, thus it is through with cylindrical hole below, drift 110 and die shoe coaxially arranged, then be fixed on track base 170 and guarantee that position no longer changes, piston 150 and cylinder barrel 160 constitute positioning hydraulic cylinders, positioning hydraulic cylinders and drift 110 and overall die shoe require coaxially arranged, then be fixed on track base 170 and guarantee invariant position, cylinder barrel 160 is highly 79mm, namely the upper surface of cylinder barrel 160 contacts with the upper surface of overall die shoe cylindrical hole, cylinder barrel 160 diameter is 14mm, bottom has two diameters to be the through hole of 2mm, one of them is inlet, another is leakage fluid dram, piston 150 diameter is 9.9mm ~ 10mm, concordant with cylinder barrel 160 upper surface when bottom dead center position, form a circular platform, because positioning hydraulic cylinders and drift 110 and overall die shoe coaxial, so piston 150 also with drift 110 and overall die shoe coaxial, drift 110 and die shoe are respectively arranged with cooling fluid passage, and are connected to temperature sensor and controller, and when temperature exceedes first threshold, controller controlled cooling model liquid enters cooling fluid passage, and according to monitor temperature controlled cooling model liquid measure, when temperature is lower than Second Threshold, cooling fluid is found time.
In another kind of embodiment, die shoe is divided into fixing die shoe 180 and movable die shoe 190 to constitute overall die shoe, fixing die shoe 180 is identical with movable die shoe 190, just fixing die shoe 180 is fixed on track base 170 and guarantees that position no longer changes, and movable die shoe 190 can slide along track base 170.
In another kind of embodiment, the piston rod of push-and-pull hydraulic cylinder 200 is welded on movable die shoe 190, and diameter of piston rod is 20mm ~ 30mm, and length is 60mm ~ 70mm; Before formation, piston rod stretches out promotion activity die shoe 190 and fixing die shoe 180 good closure, thus the truncated cone-shaped hole formed in overall die shoe, fill out riveting button for aluminium sheet during punching press and space is provided, complete back piston bar in punching press to retract, movable die shoe 190 is retracted the position away from fixing die shoe 180, and overall die shoe is opened, and can be taken out by riveting parts after track base 170 direction translation.
In another kind of embodiment, annular cooling fluid passage is had in drift 110, diameter is 2mm ~ 3mm, cooling fluid passage axial plane distance drift lower surface 3mm ~ 5mm, drift 110 in the vertical direction has two cylindrical holes and cools fluid passage with annular below and communicate, diameter is identical with the diameter of cooling fluid passage, and one of them cylindrical hole is water inlet, and another one cylindrical hole is delivery port.
In another kind of embodiment, fixing die shoe 180 and movable die shoe 190 are all provided with cooling fluid passage, cooling fluid passage arranges along the round platform hole of die shoe, two die shoes are arranged a cooling fluid passage respectively, water channel is around half, round platform hole circumference, water channel diameter is 5mm ~ 6mm, axial plane 9mm ~ 10mm lower than die shoe upper surface.
In another kind of embodiment, fixing die shoe 180 and movable die shoe 190 arrange memorial alloy deflection plate 181, it is arranged multiple through hole, it can be out of shape according to coolant temperature, the heat exchange that cooling fluid passage internal coolant is carried out is more abundant, the temperature of more efficiently reduction die shoe upper surface, when cooling fluid passage fluid temperature (F.T.) higher than distortion threshold value, it is 15 ° ~ 20 ° angles that deflection plate 181 is out of shape with cooling fluid passage wall; When cooling fluid passage fluid temperature (F.T.) lower than distortion threshold value, deflection plate 181 is fitted and is cooled fluid passage wall.
As shown in Figure 1, before punching press, hydraulic cylinder leakage fluid dram is closed, inlet feed liquor, the up 3mm of piston 150 arrives top dead centre and namely exceeds die shoe plane 2mm, by borehole jack made in advance on steel plate on piston 150, because piston 150 and drift 110 coaxially arranged, and piston 150 diameter is identical with the diameter in hole on steel plate, so achieve the accurate location in hole on drift 110 and steel plate 140, then aluminium sheet 130 is put, push-and-pull hydraulic cylinder 200 is implemented to carry out journey, along track base 170 promotion activity die shoe 190, until movable die shoe 190 contacts with fixing die shoe 180 contact surface, realize good closure.
As shown in Figure 2, when punching press is carried out, drift 110 is descending, and hydraulic cylinder leakage fluid dram is opened simultaneously, inlet is closed, and the descending arrival lower dead center of piston 150 is namely concordant with cylinder barrel 160 upper surface, form a circular platform, the aluminium sheet be stamped is packed in truncated cone-shaped hole and forms riveted joint snap close, and riveted joint terminates.
As shown in Figure 3, push-and-pull hydraulic cylinder 200 is implemented to draw stroke, and drive activity die shoe 190 is along track base 170 away from fixing die shoe 180, and overall die shoe realizes being separated, and riveting parts can be taken out riveting parts after track base 170 direction translation one segment distance.
Embodiment
In high-strength steel steel plate 140 heat forming processes, steel plate is gone out at riveting location the manhole that diameter is 10mm.
As shown in Figure 1, drift 110, positioning hydraulic cylinders and overall die shoe realize coaxially arranged, and hydraulic cylinder and fixing die shoe 180 position are fixed; Drift 110 is truncated cone-shaped structural member, and the axis of great circle of upper surface is 10mm, and the axis of small circle of lower surface is 8mm, and bus angle of inclination is 45 °, is highly 15mm, and internal cooling fluid passage diameter is 2.5mm, and axial plane and drift lower surface distance are 3mm.The centre bore that drift 110 is placed in blank holder 120 is interior for being slidably connected, blank holder 120 is annulus bodily form structural member, and be highly 15mm, outside diameter is 20mm, interior circular diameter is 10mm, piston 150 diameter 10mm, cylinder barrel 160 diameter 14mm, height 79mm, the upper contact i.e. distance die shoe upper surface of cylinder barrel 160 upper surface and overall die shoe cylindrical hole is 1mm, the square of overall die shoe to be the length of side be 80mm, the cylinder bore diameter at center is 16mm, is highly 79mm.
As shown in Figure 3, the diameter of push-and-pull hydraulic cylinder piston rod is 20mm, and length is 60mm.
A kind of riveting process of the present invention is as follows:
As shown in Figure 1, inlet opening is opened, the up 3mm of piston 150 arrives top dead centre and holding position no longer changes, by borehole jack made for high-strength steel steel plate 140 on piston 150, realize the coaxial positioning of hole and drift 110, high-strength steel steel plate 140 is put aluminium sheet 130, pushes movable die shoe 190 to fixing die shoe 180 along track base 170, closed overall die shoe;
As shown in Figure 2, drift 110 is descending, the leakage fluid dram of hydraulic cylinder is opened simultaneously, the descending arrival lower dead center of piston 150 and holding position is constant, now the upper surface of piston 150 and cylinder barrel 160 forms a circular platform, the lower surface of drift 110 and the upper surface of high-strength steel steel plate 140 arrive lower dead center stroke when same level height to be terminated, and aluminium sheet 130 is filled to enter in the truncated cone-shaped hole of die shoe and formed riveted joint snap close under the pressure of drift 110;
As shown in Figure 3, push-and-pull hydraulic cylinder is implemented to draw stroke, pulls movable die shoe 190 along track base 170 away from fixing die shoe 180, is taken out by riveting parts, complete riveted joint after track base 170 direction translation 20mm.
Present invention also offers a kind of orientable pre-punched hole without the control method of rivet constant temperature diel, it is characterized in that, comprise the steps:
Step one, when temperature sensor monitors is to drift underlaying surface temperature T
1>=T
atime, the cooling fluid in drift opened by controller; When temperature sensor monitors is to die shoe upper surface temperature T
2>=T
btime, the cooling fluid in die shoe opened by controller; Wherein, T
1for drift underlaying surface temperature, unit is DEG C, T
2for die shoe upper surface temperature, unit is DEG C, T
afor drift underlaying surface temperature threshold value, unit is DEG C, T
bfor die shoe upper surface temperature threshold, unit is DEG C; In the present embodiment, T
a=35 DEG C, T
b=40 DEG C;
The liquid inlet volume of step 2, calculating drift
calculate the liquid inlet volume of die shoe
controller controls the liquid inlet volume entering drift and die shoe, Q
w1, Q
w2unit be m
3/ s; A is heat conduction correction coefficient, K
1for drift thermal conductivity factor, unit is W/m
2dEG C, K
2for die shoe thermal conductivity factor, unit is W/m
2dEG C, S
1for cooling fluid passage vertical direction cross-sectional area in drift, unit is m
2, S
2for cooling fluid passage vertical direction cross-sectional area in die shoe, unit is m
2, T
1for drift underlaying surface temperature, unit is DEG C, T
2for die shoe upper surface temperature, unit is DEG C, T
afor drift underlaying surface temperature threshold value, unit is DEG C, T
bfor die shoe upper surface temperature threshold, unit is DEG C, and η is heat transfer efficiency, ρ
wfor cooling fluid density, unit is kg/m
3, C
wfor cooling fluid specific heat capacity, unit is J/kg DEG C, Δ T
w1for cooling fluid liquid outlet and the inlet temperature difference of drift, unit is DEG C, Δ T
w2for cooling fluid liquid outlet and the inlet temperature difference of die shoe, unit is DEG C, and e is the truth of a matter of natural logrithm; In the present embodiment, A=0.985, T
a=35 DEG C, T
b=40 DEG C;
Step 3, as temperature sensor monitors drift underlaying surface temperature T
1< T
atime, controller cuts out the cooling fluid in drift, when temperature sensor monitors is to die shoe upper surface temperature T
2< T
btime, controller cuts out the cooling fluid in die shoe; As temperature sensor monitors drift underlaying surface temperature T
1< 0.95T
atime, the cooling fluid of finding time in drift, when temperature sensor monitors is to die shoe upper surface temperature T
2< 0.95T
btime, the cooling fluid of finding time in die shoe; In the present embodiment, T
a=35 DEG C, T
b=40 DEG C.
In another kind of embodiment, in step 2, when temperature sensor monitors is to die shoe upper surface temperature T
2> 1.18T
btime, now experimentally data summary of experience, by the liquid inlet volume Q of die shoe
w2be corrected to Q
w2', Q
w2'=(0.0002lnQ
w2+ 1.51) Q
w2 0.93; In the present embodiment, T
b=40 DEG C.
In another kind of embodiment, cooling fluid passage inside in die shoe arranges NiTi memorial alloy deflection plate 181, it does not stop the cooling fluid being not orthogonal to the direction of motion, deflection plate 181 arranges through hole, utilize the memory effect of NiTi memorial alloy, when cooling fluid passage fluid temperature (F.T.) higher than distortion threshold value, it is 15 ° ~ 20 ° angles that deflection plate 181 is out of shape with cooling fluid passage wall, increase the glide path of coolant fluid " snake " font, and then improve heat transfer efficiency; When cooling fluid passage fluid temperature (F.T.) lower than distortion threshold value, deflection plate 181 is fitted and is cooled fluid passage wall.
Although embodiment of the present invention are open as above, but it is not restricted to listed in description and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. orientable pre-punched hole is without the diel of rivet constant temperature, it is characterized in that, comprising:
Drift, it is circular platform type structure, and described drift upper surface radius is greater than described drift lower surface radius;
Die shoe, its center is container cavity, and described container cavity top is positive circular platform type chamber, and bottom is through hole; Positive circular platform type chamber upper end open is arranged on plane on described die shoe, and lower end is communicated with described through hole;
Hydraulic cylinder, it is arranged in described through hole; The piston of described hydraulic cylinder stretches out described positive circular platform type chamber upper end open when non punching;
Wherein, described drift and described die shoe are respectively arranged with cooling fluid passage, and set temperature sensor and controller; When temperature exceedes first threshold, controller controlled cooling model liquid enters cooling fluid passage; When temperature is lower than Second Threshold, cooling fluid is found time.
2. orientable pre-punched hole as claimed in claim 1 is without the diel of rivet constant temperature, it is characterized in that, also comprises base, and described die shoe is arranged on described base.
3. orientable pre-punched hole as claimed in claim 2 is without the diel of rivet constant temperature, it is characterized in that, described die shoe is divided into fixing die shoe and movable die shoe along described container cavity symmetry; Described base is also provided with guide rail, and described movable die shoe along guide rail movement, thus can close with described fixing die shoe and is separated.
4. orientable pre-punched hole as claimed in claim 3 is without the diel of rivet constant temperature, it is characterized in that, described movable die shoe side connecting power device, and it is for making described movable die shoe along described guide rail movement.
5. orientable pre-punched hole as claimed in claim 4 is without the diel of rivet constant temperature, it is characterized in that, arranges annular cooling fluid passage in described drift.
6. orientable pre-punched hole as claimed in claim 4 is without the diel of rivet constant temperature, it is characterized in that, described fixing die shoe and/or described movable die shoe upper end edge through hole are around arranging cooling fluid passage.
7. orientable pre-punched hole as claimed in claim 6 is without the diel of rivet constant temperature, it is characterized in that, the cooling fluid passage inside of described die shoe arranges memorial alloy deflection plate, it is arranged multiple through hole, when described cooling fluid passage fluid temperature (F.T.) is higher than distortion threshold value, described deflection plate distortion is 15 ° ~ 20 ° angles with cooling fluid passage wall; When described cooling fluid passage fluid temperature (F.T.) road is lower than distortion threshold value, described deflection plate laminating cooling fluid passage wall.
8. orientable pre-punched hole is without a control method for rivet constant temperature diel, it is characterized in that, comprises the steps:
Step one, when temperature sensor monitors is to drift underlaying surface temperature T
1>=T
atime, the cooling fluid in drift opened by controller; When temperature sensor monitors is to die shoe upper surface temperature T
2>=T
btime, the cooling fluid in die shoe opened by controller; Wherein, T
1for drift underlaying surface temperature, T
2for die shoe upper surface temperature, T
afor drift underlaying surface temperature threshold value, T
bfor die shoe upper surface temperature threshold;
The liquid inlet volume of step 2, calculating drift
calculate the liquid inlet volume of die shoe
controller controls the liquid inlet volume entering drift and die shoe; Wherein, A is heat conduction correction coefficient, K
1for drift thermal conductivity factor, K
2for die shoe thermal conductivity factor, S
1for cooling fluid passage vertical direction cross-sectional area in drift, S
2for cooling fluid passage vertical direction cross-sectional area in die shoe, T
afor drift underlaying surface temperature threshold value, T
bfor die shoe upper surface temperature threshold, T
1for drift underlaying surface temperature, T
2for die shoe upper surface temperature, η is heat transfer efficiency, ρ
wfor cooling fluid density, C
wfor cooling fluid specific heat capacity, Δ T
w1for cooling fluid liquid outlet and the inlet temperature difference of drift, Δ T
w2for cooling fluid liquid outlet and the inlet temperature difference of die shoe, e is the truth of a matter of natural logrithm;
Step 3, as temperature sensor monitors drift underlaying surface temperature T
1< T
atime, controller cuts out the cooling fluid in drift, when temperature sensor monitors is to die shoe upper surface temperature T
2< T
btime, controller cuts out the cooling fluid in die shoe; As temperature sensor monitors drift underlaying surface temperature T
1< 0.95T
atime, the cooling fluid of finding time in drift, when temperature sensor monitors is to die shoe upper surface temperature T
2< 0.95T
btime, the cooling fluid of finding time in die shoe.
9. pre-punched hole as claimed in claim 8 is without the control method of rivet constant temperature diel, it is characterized in that, in described step 2, when temperature sensor monitors is to die shoe upper surface temperature T
2> 1.18T
btime, the now liquid inlet volume Q of die shoe
w2be corrected to Q
w2', Q
w2'=(0.0002lnQ
w2+ 1.51) Q
w2 0.93.
10. pre-punched hole as claimed in claim 8 is without the control method of rivet constant temperature diel, it is characterized in that, cooling fluid passage inside in die shoe also arranges memorial alloy deflection plate, when described cooling fluid passage fluid temperature (F.T.) is higher than distortion threshold value, described deflection plate distortion is 15 ° ~ 20 ° angles with cooling fluid passage wall; When described cooling fluid passage fluid temperature (F.T.) is lower than distortion threshold value, described deflection plate laminating cooling fluid passage wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510944778.2A CN105328045B (en) | 2015-12-16 | 2015-12-16 | A kind of orientable pre-punched hole is without rivet constant temperature stamping mold and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510944778.2A CN105328045B (en) | 2015-12-16 | 2015-12-16 | A kind of orientable pre-punched hole is without rivet constant temperature stamping mold and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105328045A true CN105328045A (en) | 2016-02-17 |
| CN105328045B CN105328045B (en) | 2017-03-29 |
Family
ID=55278922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510944778.2A Expired - Fee Related CN105328045B (en) | 2015-12-16 | 2015-12-16 | A kind of orientable pre-punched hole is without rivet constant temperature stamping mold and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105328045B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097953A (en) * | 2017-12-15 | 2018-06-01 | 华中科技大学 | A kind of mold intelligence follow-cooling passageway and its manufacturing method |
| CN113172119A (en) * | 2021-04-01 | 2021-07-27 | 刘冬 | Bending part constant temperature control system in die working, control method, terminal and medium |
| CN113333986A (en) * | 2021-05-31 | 2021-09-03 | 帝国理工创新有限公司 | Method for quickly forming dissimilar alloy tailor-welded blank component |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08215778A (en) * | 1995-02-14 | 1996-08-27 | Murata Mfg Co Ltd | Method for joining metallic plates |
| JP2003080328A (en) * | 2001-09-10 | 2003-03-18 | Aizemu:Kk | Metal plate joining method |
| CN2774671Y (en) * | 2005-03-09 | 2006-04-26 | 韩君良 | Pipe spherical forming mould and pipe spherical mouth shrinking mould |
| CN101168181A (en) * | 2006-10-27 | 2008-04-30 | 昆山施耐特机械有限公司 | Location riveting method and stamping mould between two metal plates |
| CN103447401A (en) * | 2012-05-28 | 2013-12-18 | 株式会社理光 | Plate-shaped component connecting body, plate-shaped component connecting method, and image forming apparatus |
| JP2014144860A (en) * | 2013-01-30 | 2014-08-14 | Hitachi Ltd | Plate-like member and production method of the same, transport machine and production method of the same, and escalator |
-
2015
- 2015-12-16 CN CN201510944778.2A patent/CN105328045B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08215778A (en) * | 1995-02-14 | 1996-08-27 | Murata Mfg Co Ltd | Method for joining metallic plates |
| JP2003080328A (en) * | 2001-09-10 | 2003-03-18 | Aizemu:Kk | Metal plate joining method |
| CN2774671Y (en) * | 2005-03-09 | 2006-04-26 | 韩君良 | Pipe spherical forming mould and pipe spherical mouth shrinking mould |
| CN101168181A (en) * | 2006-10-27 | 2008-04-30 | 昆山施耐特机械有限公司 | Location riveting method and stamping mould between two metal plates |
| CN103447401A (en) * | 2012-05-28 | 2013-12-18 | 株式会社理光 | Plate-shaped component connecting body, plate-shaped component connecting method, and image forming apparatus |
| JP2014144860A (en) * | 2013-01-30 | 2014-08-14 | Hitachi Ltd | Plate-like member and production method of the same, transport machine and production method of the same, and escalator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097953A (en) * | 2017-12-15 | 2018-06-01 | 华中科技大学 | A kind of mold intelligence follow-cooling passageway and its manufacturing method |
| CN113172119A (en) * | 2021-04-01 | 2021-07-27 | 刘冬 | Bending part constant temperature control system in die working, control method, terminal and medium |
| CN113333986A (en) * | 2021-05-31 | 2021-09-03 | 帝国理工创新有限公司 | Method for quickly forming dissimilar alloy tailor-welded blank component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105328045B (en) | 2017-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205200338U (en) | No rivet constant temperature stamping die that punches a hole in advance that can fix a position | |
| CN103600017B (en) | Between ultra-high strength steel plate or with the self-piercing riveting device of aluminium alloy plate | |
| CN106391874B (en) | A kind of floor heating pipeline Slot shaping method | |
| CN102672062B (en) | Laser heating rivetless riveting device | |
| CN101181730A (en) | Drill pipe joint precision die forging process | |
| CN100382911C (en) | Pressure variable edge force difference temperature drawing method for magnesium alloy plate | |
| CN105328045B (en) | A kind of orientable pre-punched hole is without rivet constant temperature stamping mold and its control method | |
| CN104607557B (en) | The self-piercing riveting device of ultra-high strength steel plate and aluminium alloy plate | |
| CN101091978A (en) | New technique for forging bracket of back axle of automobile | |
| CN104607524A (en) | Tailor welded blank integral drawing forming device and method for large-scale curved surface part | |
| CN105798538B (en) | Differential carrier squeezes punching technology | |
| CN107900234A (en) | A kind of slide block type cavity plate friction of lightweight plate is without riveting connection method | |
| CN110586831B (en) | Die assembly for forging miter pipe and forging method | |
| CN200998752Y (en) | Die assembly for producing special-shaped condensation tube | |
| CN103084466A (en) | Method of flexible punch head ultrasonic micro deep drawing step-by-step molding and device thereof | |
| CN109692911A (en) | A kind of large size toroidal shell part monolithic molding device and method | |
| CN106424180A (en) | Extruding device and method for double-mouth and thick-wall pipe blank extrusion manufacturing | |
| CN106363067B (en) | A kind of spacecraft fuel tank bottom monolithic molding device and its manufacturing process | |
| CN106180257B (en) | Large plate list weld seam threeway forming process and forming device | |
| CN111036814A (en) | Special-shaped multi-way joint multi-way flexible loading integral forming device and method | |
| CN106041415B (en) | A kind of hollow valve filled with sodium manufacturing process squeezing base | |
| CN204504006U (en) | The self-piercing riveting device of ultra-high strength steel plate and aluminium alloy plate | |
| CN110116170A (en) | A kind of expansion tube necking method | |
| CN105149391A (en) | Device and method for forming titanium alloy corrugation-reinforced cylindrical part | |
| CN207325778U (en) | A kind of coining attachment device of ultrasonic wave added |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20171216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |