CN101337239A - Hollow pipe internal and external forming device - Google Patents
Hollow pipe internal and external forming device Download PDFInfo
- Publication number
- CN101337239A CN101337239A CNA2008101086536A CN200810108653A CN101337239A CN 101337239 A CN101337239 A CN 101337239A CN A2008101086536 A CNA2008101086536 A CN A2008101086536A CN 200810108653 A CN200810108653 A CN 200810108653A CN 101337239 A CN101337239 A CN 101337239A
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- core
- hollow tube
- combined
- housing
- final molding
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/08—Making helical bodies or bodies having parts of helical shape internal screw-threads
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- Mechanical Engineering (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention relates to a device for molding the internal and external parts of hollow pipe with high forming accuracy and simple molding process. The device comprises the following components: an elementary molding unit which is used for elementarily molding a small-dimension part (21b) used for molding sawteeth (22b) in the hollow pipe (20); and a final molding unit which is provided on an elementary molding pipe (21) elementarily molded through the elementary molding unit for finally molding the sawteeth (22b) and final guide groove (22a). The molding device and molding method according to the invention use a hollow pipe to elementarily mold the elementary molding pipe and finally molding with the secondary molding pipe. The molding device and molding method have the advantages of convenient preparing and high accuracy.
Description
Technical field
The present invention relates to the hollow tube internal and external forming device, especially relate to moulding accuracy height, the simple hollow tube internal and external forming device of moulding process.
Background technology
Turning cylinder as automobile needs the bigger power of twisting, and therefore uses the bigger hollow tube of polar moment of inertia (polar moment ofinertia).And, be extensive use of the hollow tube that weight ratio solid shafting is light, twisting resistance had big patience.
Recently, go up the application hollow tube, can when automobile collides, protect mental awareness at steering axles (Steering Column).
The transfer of automobile is the operating means that changes the automobilism direction according to the wish of human pilot.
Above-mentioned transfer directly carries out steering operation by human pilot, and its operating physical force is communicated to following each parts,, comprising for this reason: operating means comprises steering wheel, steering spindle, steering column etc.; Gear (gear) device by slowing down the rotation of steering spindle, increases steering force, changes the direction of operating mechanism simultaneously and is communicated to linkage; And, jockey, when front-wheel is passed in the motion of this geared system, keep correct left and right wheels position, comprise pitman arm (pitman arm), steering drag link (drag link) and knuckle arm (Knuckle Arm), pull bar (tie rod).
Steering spindle comprises: the universal joint (universal joint) that is connected to steering wheel is gone up end link (Link), is connected to the following end link (Link) of universal joint (universal joint) of steering box (gear box); Connect on the universal joint (universal joint)/following end link by universal joint (universal joint).
Steering column surrounds and to be incorporated into the outer peripheral face that steering column universal joint (universal joint) is gone up end link, and rotatably is provided with and can regulates the lever (tiltlever) of steering wheel angle according to the build of human pilot.
In addition, if the place ahead crashes when vehicle operating, impulsive force passes to steering box (gear box) by cabin (engineroom), and the impulsive force that passes to steering box is delivered on the steering wheel by steering spindle.
At this moment, because of the impulsive force steering box is pushed into driver's cabin inside, steering spindle that is connected with steering box and steering wheel also are pushed into driver's cabin inside then, and the danger that steering wheel hits human pilot takes place.
For this reason, as shown in Figure 1, steering spindle 2 comprises the upper axis 3 that connects steering wheel (not shown) and lower shaft 4 and is connected the chuck 5 of the hollow of above-mentioned two axles.
Lower shaft 4 is fixed on the chuck 5 by pin 6, and the outer peripheral face of lower shaft 4 is pressed into steel ball 8, and lower shaft 4 is pressed into chuck 5 inside during impact, and steel ball 8 enters into chuck 5 inside to reduce impulsive force.
But the upper axis of using in the above-mentioned transfer 3 is shaft-like for being made into, and has not only increased the weight of itself, and the space that need be used in conjunction with upper axis 3 and lower shaft 4 is chuck 5, has therefore increased assembling procedure.
In addition, for making above-mentioned transfer upper axis, use the forging machine (swaging machine) that hits repeatedly rapidly with the cam that rotates to carry out molding procedure, the strike in the molding procedure can reduce the mechanical strength of axle.
Fig. 2 is for solving the transfer axle 10 that the above-mentioned shortcoming inventor has filed an application.This transfer comprises with axle 10, and hollow body portion 11 is formed with key lock (keylock) slot part 12 that is used to insert switch operation devices such as lighting switch, rain brush switch; External diameter sawtooth (Serration) 14 is combined with steering wheel at an end outer diameter part of axle 10; Internal diameter sawtooth 13 is combined with lower shaft at the other end inside diameter of axle 10.
The axle 10 of this structure, when vehicle collision, lower shaft axially enters through sawtooth 13 with interior, can relax impulsive force.
Be at the inner sawtooth that forms of hollow tube, by drawing pin (Broaching) method or utilizing forging and pressing (swaging) device to form sawtooth in the past.By drawing the pin method or utilizing forging press to form sawtooth, have shortcomings such as cost height, molding time are long, when especially using forging press, manufacturing process's noise is bigger, when the inner formation of hollow tube sawtooth, strain can take place in conical interface, and near the sawtooth that forms the conical interface is distorted, and has the uneven shortcoming of sawtooth.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of novel hollow tube internal and external forming device is provided, be convenient to relative axle at hollow tube inner formation guide groove and enter, its production costs is cheap simultaneously, and the guide groove that is shaped easily.
Another object of the present invention provides a kind of hollow tube internal and external forming device, and is inner and outside to form hollow tube simultaneously.
The present invention is directed to the problems referred to above, a kind of hollow tube internal and external forming device is provided, this hollow tube internal and external forming device is used for forming sawtooth at hollow tube one end outer peripheral face, form a plurality of guide grooves at hollow tube other end inner peripheral surface, it is characterized in that, this hollow tube internal and external forming device comprises: preliminary forming unit, and this preliminary forming unit is used for beginning to take shape minor diameter part and guide groove at hollow tube, and this minor diameter part is used to form sawtooth; Final molding unit, this final molding unit are used at the one-level moulding pipe by the first one-step forming of above-mentioned preliminary forming unit, final molding sawtooth and final guide groove.
Above-mentioned preliminary forming unit comprises: the first fixation side forming unit, and this first fixation side forming unit is used for fixing first core (core), and this first core is used to form above-mentioned guide groove; First moves the side forming unit, and this first moves the side forming unit and be used to form above-mentioned minor diameter part, and above-mentioned first core is pressed into above-mentioned hollow tube.
The above-mentioned first fixation side forming unit comprises: first fixed pedestal (base); First housing (housing) of hollow, this first housing are fixed on above-mentioned first fixed pedestal; Support component, this support component combination is fixed on the said first shell, and supports above-mentioned first core; The first preliminary profiled part, this first preliminary profiled part is combined on the said first shell, and above-mentioned first core is positioned at the center of the described first preliminary profiled part, and inside diameter forms inclined plane and polygonal; First stripper apparatus (ejector), this first stripper apparatus combines with above-mentioned first core, takes out the above-mentioned one-level moulding pipe that (extraction) begun to take shape.
Above-mentioned first moves the side forming unit comprises: first mobile foundation, and this first mobile foundation moves to the above-mentioned first fixation side forming unit by drive source; Second housing of hollow, this second housing are fixed on above-mentioned first mobile foundation; The second preliminary profiled part, this second preliminary profiled part is combined in the above-mentioned second housing front end, and inner peripheral surface has and is used for tapered portion and the forming surface that the above-mentioned minor diameter part of moulding is used.
Above-mentioned first stripper apparatus comprises: the first demoulding pin (ejector pin), and this first demoulding keying is synthetic to connect above-mentioned support component, and can moving axially along above-mentioned first core; The guide member of hollow, this guide member is combined in said first shell inside, and above-mentioned first core is positioned at its center; First moving-member, this first moving-member is combined in the inner peripheral surface of guide sections part slidably, and links with the above-mentioned first demoulding pin; First moves sleeve pipe, and this first moves sleeve pipe and be combined in above-mentioned first core slidably, and with above-mentioned first moving-member interlock; Back-moving spring, this back-moving spring are combined in the inside of the above-mentioned first preliminary profiled part; Compression member, this compression member are combined in the inner peripheral surface of the above-mentioned first preliminary profiled part slidably, and with above-mentioned first move sleeve pipe interlock, thereby compress above-mentioned back-moving spring.
Above-mentioned final molding unit comprises: the second fixation side forming unit, and this second fixation side forming unit is used for fixing second core, and this second core is used to form above-mentioned final guide groove; Second moves the side forming unit, and this second moves the side forming unit and be used for forming sawtooth at above-mentioned minor diameter part, and above-mentioned one-level moulding pipe is pressed into above-mentioned second core.
The above-mentioned second fixation side forming unit comprises: second fixed pedestal; The 3rd housing of hollow, the 3rd housing are fixedly supported on above-mentioned second fixed pedestal; The first final molding parts, these first final molding parts are combined in the front end of above-mentioned the 3rd housing, and above-mentioned second core is positioned at the center of the first final molding parts, and the inner peripheral surface of the first final molding parts forms the first final molding face; Mobile guide member, this moves guide member and is combined in above-mentioned the 3rd enclosure interior slidably; Pressure-producing part, this pressure-producing part are combined in above-mentioned the 3rd enclosure interior slidably, and support above-mentioned second core; First spring, this first spring are installed between above-mentioned mobile guide member and the 3rd shell end; Second spring, this second spring are installed between above-mentioned mobile guide member and the pressure-producing part; Second stripper apparatus, this second stripper apparatus are used to take out the one-level moulding pipe that is combined in second core.
Second moves the side forming unit comprises: second mobile foundation, and this second mobile foundation moves to the above-mentioned second fixation side forming unit by drive source; The 4th housing of hollow, the 4th housing are fixed on above-mentioned second mobile foundation; The second final molding parts, these second final molding parts are combined in the front end of above-mentioned the 4th housing, and the inner peripheral surface of the described second final molding parts has the second final molding face that is used for forming at above-mentioned minor diameter part sawtooth; The 3rd core, the 3rd core is combined in the center of the above-mentioned second final molding parts, and can move along its axis; Back-moving spring, this back-moving spring are combined on above-mentioned the 4th housing, are used for above-mentioned the 3rd core returned to original position.
Above-mentioned second stripper apparatus comprises: second moves sleeve pipe, and this second moves sleeve pipe and be combined in slidably on above-mentioned second core, and a termination contacts the end of the one-level moulding pipe that combines with above-mentioned second core; Second moving-member, this second moving-member are combined in above-mentioned second core slidably, and touch above-mentioned second and move the sleeve pipe other end; The second demoulding pin, this second demoulding pin connects above-mentioned mobile guide member and pressure-producing part, and links with above-mentioned second moving-member.
For achieving the above object, the present invention also provides a kind of inside and outside forming method of hollow tube, this method is used for forming sawtooth at hollow tube one end outer peripheral face, carry out final molding at hollow tube other end inner peripheral surface formation guide groove and outer peripheral face with definite shape, it is characterized in that, the inside and outside forming method of described hollow tube comprises: preliminary forming step, this preliminary forming step forms tapered portion and minor diameter part at an end of above-mentioned hollow tube, begins to take shape guide groove and forms polygon at the outer peripheral face of this other end at the inner peripheral surface of the other end of described hollow tube simultaneously; Final molding step, this final molding step are carried out final molding according to the meander-shaped of above-mentioned inner peripheral surface to the described outer peripheral face of polygon when above-mentioned minor diameter part forms sawtooth.
And the outer peripheral face of above-mentioned minor diameter part is a polygon.
As mentioned above, shaped device of the present invention and forming method, by the first one-step forming one-level moulding pipe of hollow tube, with secondary moulding pipe final molding, not only production process is simplified, and the accuracy height.
Description of drawings
Fig. 1 is the summary sectional view of the steering spindle of existing use hollow tube;
Fig. 2 is the summary sectional view of existing hollow tube;
Fig. 3 is the sectional view of hollow tube;
Fig. 4 a and 4b are the sectional views of one-level moulding pipe;
Fig. 5 a to 5c is the sectional view of secondary moulding pipe;
Fig. 6 to Fig. 8 is the sectional view of the preliminary forming unit duty of explanation;
Fig. 9 to Figure 11 is the sectional view of explanation final molding cell operation state.
Wherein, Reference numeral:
20: hollow tube
21: one-level moulding pipe
22: secondary moulding pipe
100: the first fixation side forming units
Move the side forming unit at 200: the first
300: the second fixation side forming units
Move the side forming unit at 400: the second.
The specific embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail.
The hollow tube of the embodiment of the invention is convenient to the structure that relative axle enters into hollow tube inside to transmitting turning power with the relative axle of its combination, having simultaneously.
Aforesaid hollow tube, as in the transfer of automobile, steering wheel is combined in an end of hollow tube; the other end of hollow tube is in conjunction with relative axle; when the collision happens accident, axle enters into hollow tube inside and absorbs impulsive force relatively, can protect human pilot from accident.
Fig. 3 to Fig. 5 shows the forming process of aforesaid hollow tube, by the circular hollow tube 20 of hollow shown in Figure 3, by the first one-step forming shown in Fig. 4 a, final molding shown in Fig. 5 a.
Fig. 4 a to Fig. 4 c begins to take shape minor diameter part 21b and tapered portion 21c at a first end of the one-level moulding pipe 21 of one-step forming, and other end inner peripheral surface forms guide groove 21a and outer peripheral face begins to take shape hexagonal configuration.
Fig. 5 a to 5c is the minor diameter part 21b outer peripheral face formation sawtooth 22b at the one-level moulding pipe 21 of first one-step forming, and the outer peripheral face of the other end is according to the shape final molding of inner circumferential surface.
In the aforesaid structure, steel ball during impact (not shown) enters in the guide groove 22a and is directed, and above-mentioned sawtooth 22a is incorporated into steering wheel (not shown).
The device that forms final molding pipe 22 by aforesaid hollow tube 20 as shown in the figure.
Fig. 6 to Fig. 8 is the preliminary shaped device that forms one-level moulding pipe 21, and Fig. 9 to Figure 11 is the final molding device that is molded into final molding pipe 22 from one-level moulding pipe 21.
The internal and external forming device of the hollow tube in the embodiment of the invention comprises: preliminary forming unit, this preliminary forming unit is used for beginning to take shape minor diameter part 21b and guide groove 21a on hollow tube 20, this minor diameter part 21b is used to form sawtooth (Serration) 22b (Fig. 6 to Fig. 8); Final molding unit, this final molding unit are used at the one-level moulding pipe 21 by the first one-step forming of above-mentioned preliminary forming unit, final molding sawtooth 22b and final guide groove 22a (Fig. 9 to Figure 11).
To shown in Figure 8, above-mentioned preliminary forming unit comprises as Fig. 6: the first fixation side forming unit 100, be used for fixing first core 170, and this first core 170 is used to form above-mentioned guide groove 21a; First moves side forming unit 200, is used to form above-mentioned minor diameter part 21b, and above-mentioned first core 170 is pressed into above-mentioned hollow tube 20.
The above-mentioned first fixation side forming unit 100 comprises: first fixed pedestal 110; First housing 120 of hollow, this first housing 120 are fixed on above-mentioned first fixed pedestal 110; Support component 130, these support component 130 combinations are fixed on the said first shell 120, and support above-mentioned first core 170; The first preliminary profiled part 150, this first preliminary profiled part 150 is combined on the said first shell 120, above-mentioned first core 170 is positioned at the center of the described first preliminary profiled part 150, and the inside diameter of the described first preliminary profiled part 150 forms inclined plane 151 and polygonal 152; First stripper apparatus, this first stripper apparatus combines with above-mentioned first core 170, takes out the above-mentioned one-level moulding pipe that has begun to take shape.Mark 141 is the fixed parts that support the bottom of first core 170 among the figure.
Above-mentioned first moves side forming unit 200 comprises: first mobile foundation 210, and this first mobile foundation 210 moves to the above-mentioned first fixation side forming unit 100 by drive source (oil pressure or air pressure); Second housing 220 of hollow, this second housing 220 are fixed on above-mentioned first mobile foundation 210; The second preliminary profiled part 230, this second preliminary profiled part 230 is combined in above-mentioned second housing, 220 front ends, and inner peripheral surface has tapered portion 231 and the forming surface 232 that is used for the above-mentioned minor diameter part 21b of moulding.
Above-mentioned first stripper apparatus comprises: the first demoulding pin 160, this first demoulding pin 160 are combined into and connect above-mentioned support component 130, can moving axially along above-mentioned first core 170; The guide member 140 of hollow, this guide member 140 is combined in said first shell 120 inside, and above-mentioned first core 170 is positioned at the center of this guide member 140; First moving-member 161, this first moving-member 161 is combined in the inner peripheral surface of guide sections part 140 slidably, with 160 interlocks of the above-mentioned first demoulding pin; First moves sleeve pipe 162, and this first moves sleeve pipe 162 and be combined in above-mentioned first core 170 slidably, with 161 interlocks of above-mentioned first moving-member; Back-moving spring 164, this back-moving spring 164 are combined in the above-mentioned first preliminary profiled part 150 inside; Compression member 163, this compression member 163 is combined in the inner peripheral surface of the above-mentioned first preliminary profiled part 150 slidably, and above-mentioned first moves sleeve pipe 162 interlock, thereby compresses above-mentioned back-moving spring 164.
In addition, to shown in Figure 11, above-mentioned final molding unit comprises as Fig. 9: the second fixation side forming unit 300, and this second fixation side forming unit 300 is used for fixing second core 380, and this second core 380 is used to form above-mentioned final guide groove 22a; Second moves side forming unit 400, and this second moves side forming unit 400 and be used on above-mentioned minor diameter part 21b forming sawtooth 22b, and above-mentioned one-level moulding pipe 21 is pressed into above-mentioned second core 380.
The above-mentioned second fixation side forming unit 300 comprises: second fixed pedestal 310; The 3rd housing 320, the three housings 320 of hollow are fixedly supported on above-mentioned second fixed pedestal 310; The first final molding parts 360, these first final molding parts 360 are combined in the front end of above-mentioned the 3rd housing 320, above-mentioned second core 380 is positioned at the center of these first final molding parts 360, and the inner peripheral surface of these first final molding parts 360 forms the first final molding face 361; Mobile guide member 340, this moves guide member 340 and is combined in above-mentioned the 3rd housing 320 inside slidably; Pressure-producing part 350, this pressure-producing part 350 are combined in above-mentioned the 3rd housing 320 inside slidably, support above-mentioned second core 380; First spring 391, this first spring 391 are installed between above-mentioned mobile guide member 340 and the 3rd housing 320 ends; Second spring 392, this second spring 392 are installed between above-mentioned mobile guide member 340 and the pressure-producing part 350; Second stripper apparatus, this second stripper apparatus are used to take out the one-level moulding pipe 21 that is combined in second core 380.
Second moves side forming unit 400 comprises: second mobile foundation 410, and this second mobile foundation 410 moves to the above-mentioned second fixation side forming unit 300 by drive source (oil pressure or air pressure); The 4th housing 420, the four housings 420 of hollow are fixed on above-mentioned second mobile foundation 410; The second final molding parts 430, these second final molding parts 430 are combined in the front end of above-mentioned the 4th housing 420, and inner peripheral surface has the second final molding face 431 that is used for forming at above-mentioned minor diameter part sawtooth 22b; 440, the three cores 440 of the 3rd core are combined in the center of the above-mentioned second final molding parts 430, can move along its axis; Back-moving spring 450, this back-moving spring 450 are combined on above-mentioned the 4th housing 420, are used for above-mentioned the 3rd core 440 returned to original position; The 3rd stripper apparatus, the 3rd stripper apparatus are used to take out the one-level moulding pipe 21 that is combined in above-mentioned the 3rd core 440.
Above-mentioned second stripper apparatus comprises: second moves sleeve pipe 373, and this second moves sleeve pipe 373 and be combined in slidably on above-mentioned second core 380, and a termination contacts one-level moulding pipe 21 ends that combine with above-mentioned second core 380; Second moving-member 372, this second moving-member 372 are combined on above-mentioned second core 380 slidably, and touch above-mentioned second and move sleeve pipe 373 other ends; The second demoulding pin 371, this second demoulding pin 371 connects above-mentioned mobile guide member 340 and pressure-producing part 350, and links with above-mentioned second moving-member 372.
Above-mentioned the 3rd stripper apparatus comprises: the 3rd moves sleeve pipe 480, the three moves sleeve pipe 480 and is combined in slidably on above-mentioned the 3rd core 440, and a termination contacts one-level moulding pipe 21 ends that combine with above-mentioned the 3rd core 440; The 3rd moving-member 470, the three moving-members 470 are combined on above-mentioned the 3rd core 440 slidably, and touch the above-mentioned the 3rd and move sleeve pipe 480 other ends; The 3rd demoulding pin 460, the three demoulding pins 460 and 470 interlocks of above-mentioned the 3rd moving-member.
The building mortion that utilization has as above-mentioned structure comes the method for moulding hollow tube as follows.
The forming method of the embodiment of the invention comprises: preliminary forming step at the end formation tapered portion 21c and the minor diameter part 21b of above-mentioned hollow tube 20, begins to take shape guide groove 21a and outer peripheral face formation polygon at other end inner peripheral surface simultaneously; The final molding step when above-mentioned minor diameter part 21b forms sawtooth 22b, is carried out the final molding of above-mentioned polygon outer peripheral face according to the meander-shaped of above-mentioned inner peripheral surface.
At first, as shown in Figure 3 hollow tube 20 is installed to preliminary forming unit as illustrated in fig. 6.At this moment, an end of hollow tube 20 is positioned at the front end of first core 170, and the other end is positioned on the second preliminary profiled part 230.
Under this state, start first as illustrated in fig. 7 and move side forming unit 200, during to hollow tube 20 pressurizations, hollow tube 20 moves and is pressed into first core 170 to the left.
At this moment, one side of hollow tube 20 is first one-step formings between first core 170 and the first preliminary profiled part 150, the end face of formation shown in Fig. 4 b, and the opposite side of hollow tube 20 is moulding in the second preliminary profiled part 230, begins to take shape taper 21c and minor diameter part 21b shown in Fig. 4 a.
After this, as shown in Figure 8, start drive sources such as oil pressure or pneumatics, move right and first move side forming unit 200, the first demoulding pin 160 is moved right, take out the one-level moulding pipe 21 of one-step forming just.At this moment, the first demoulding pin 160, first moving-member 161 and first that links successively moves sleeve pipe 162 and compression member 163, takes out one-level forming tubes 21 from first core 170.
Afterwards, as shown in Figure 9, one-level moulding pipe 21 is installed to the final molding unit.At this moment, an end of one-level moulding pipe 21 is positioned at second core 380, and the other end is positioned at the 3rd core 440.
Under this state, as shown in figure 10, start second and move side forming unit 400, during to 21 pressurizations of one-level moulding pipe, one-level moulding pipe 21 moves to the left, and a side is pressed into second core 380, and the other end is pressed into the 3rd core 440.
At this moment, one side of one-level moulding pipe 21 is moulding between the first final molding parts 360 and second core 380, form shape as Fig. 5 b, and the opposite side of one-level moulding pipe 21 is final molding between the 3rd core 440 and the second final molding parts 430, at the sawtooth of outer peripheral face formation shown in Fig. 5 c of minor diameter part 21b.
In addition, the outer peripheral face of minor diameter part 21b can form sphere or hexagon.
After the final molding, as shown in figure 11, utilize the second demoulding pin 371 and the 3rd demoulding pin 460 to take out secondary forming tube 22 like this.
Claims (8)
1, a kind of hollow tube internal and external forming device, this hollow tube internal and external forming device are used for forming sawtooth at hollow tube one end outer peripheral face, form a plurality of guide grooves at hollow tube other end inner peripheral surface, it is characterized in that this hollow tube internal and external forming device comprises:
Preliminary forming unit, this preliminary forming unit is used for beginning to take shape minor diameter part (21b) and guide groove (21a) on described hollow tube (20), and this minor diameter part (21b) is used to form sawtooth (22b);
Final molding unit, this final molding unit are used at the one-level moulding pipe (21) by the first one-step forming of described preliminary forming unit, final molding sawtooth (22b) and final guide groove (22a).
2, hollow tube internal and external forming device according to claim 1 is characterized in that,
Described preliminary forming unit comprises: the first fixation side forming unit (100), and this first fixation side forming unit (100) is used for fixing first core (170), and this first core (170) is used to form described guide groove (21a); First moves side forming unit (200), and this first moves side forming unit (200) and be used to form described minor diameter part (21b), and described first core (170) is pressed into described hollow tube (20);
The described first fixation side forming unit (100) comprising: first fixed pedestal (110); First housing (120) of hollow, this first housing (120) is fixed on described first fixed pedestal (110); Support component (130), this support component (130) combination is fixed on described first housing (120), and supports described first core (170); The first preliminary profiled part (150), this first preliminary profiled part (150) is combined on described first housing (120), described first core (170) is positioned at the center of the described first preliminary profiled part (150), and the inside diameter of the described first preliminary profiled part (150) forms inclined plane (151) and polygonal (152); First stripper apparatus, this first stripper apparatus combines with described first core (170), takes out the described one-level moulding pipe that has begun to take shape;
Described first moves side forming unit (200) comprising: first mobile foundation (210), and this first mobile foundation (210) moves to the described first fixation side forming unit (100) by drive source; Second housing (220) of hollow, this second housing (220) is fixed on described first mobile foundation (210); The second preliminary profiled part (230), this second preliminary profiled part (230) is combined in described second housing (220) front end, and inner peripheral surface has tapered portion (231) and the forming surface (232) that is used for the described minor diameter part of moulding (21b).
3, hollow tube internal and external forming device according to claim 2, it is characterized in that, described first stripper apparatus comprises: the first demoulding pin (160), this first demoulding pin (160) are combined into and connect described support component (130), and can moving axially along described first core (170); The guide member of hollow (140), this guide member (140) are combined in described first housing (120) inside, and described first core (170) is positioned at the center of the guide member (140) of described hollow; First moving-member (161), this first moving-member (161) is combined on the inner peripheral surface of described guide member (140) slidably, and links with the described first demoulding pin (160); First moves sleeve pipe (162), and this first moves sleeve pipe (162) and be combined in slidably on described first core (170), and links with described first moving-member (161); Back-moving spring (164), this back-moving spring (164) are combined in described first preliminary profiled part (150) inside; Compression member (163), this compression member (163) is combined in the inner peripheral surface of the described first preliminary profiled part (150) slidably, and with described first move sleeve pipe (162) interlock, thereby compress described back-moving spring (164).
4, according to any described hollow tube internal and external forming device in the claim 1 to 3, it is characterized in that, described final molding unit comprises: the second fixation side forming unit (300), this second fixation side forming unit (300) is used for fixing second core (380), and this second core (380) is used to form described final guide groove (22a); Second moves side forming unit (400), and this second moves side forming unit (400) and be used for forming sawtooth (22b) at described minor diameter part (21b), and described one-level moulding pipe (21) is pressed into described second core (380);
The described second fixation side forming unit (300) comprising: second fixed pedestal (310); The 3rd housing (320) of hollow, the 3rd housing (320) are fixedly supported on described second fixed pedestal (310); The first final molding parts (360), these first final molding parts (360) are combined in the front end of described the 3rd housing (320), described second core (380) is positioned at the center of the described first final molding parts (360), and the inner peripheral surface of the described first final molding parts (360) is formed with the first final molding face (361); Mobile guide member (340), this moves guide member (340) and is combined in described the 3rd housing (320) inside slidably; Pressure-producing part (350), this pressure-producing part (350) are combined in described the 3rd housing (320) inside slidably, and support described second core (380); First spring (391), this first spring (391) are installed between described mobile guide member (340) and the 3rd housing (320) end; Second spring (392), this second spring (392) are installed between described mobile guide member (340) and the pressure-producing part (350); Second stripper apparatus, this second stripper apparatus are used for taking out the one-level moulding pipe (21) that is combined in described second core (380);
Second moves side forming unit (400) comprising: second mobile foundation (410), and this second mobile foundation (410) moves to the described second fixation side forming unit (300) by drive source; The 4th housing (420) of hollow, the 4th housing (420) are fixed on described second mobile foundation (410); The second final molding parts (430), these second final molding parts (430) are combined in the front end of described the 4th housing (420), and the inner peripheral surface of the described second final molding parts (430) has the second final molding face (431) that is used for forming at described minor diameter part (21b) sawtooth (22b); The 3rd core (440), the 3rd core (440) is combined in the center of the described second final molding parts (430), and can moving axially along described second final molding parts (430); Back-moving spring (450), this back-moving spring (450) is combined on described the 4th housing (420), is used for described the 3rd core (440) returned to original position; The 3rd stripper apparatus, the 3rd stripper apparatus are used for taking out the one-level moulding pipe (21) that is combined in described the 3rd core (440).
5, hollow tube internal and external forming device according to claim 4, it is characterized in that, described second stripper apparatus comprises: second moves sleeve pipe (373), this second moves sleeve pipe (373) and is combined in slidably on described second core (380), and this second termination that moves sleeve pipe (373) contacts the end of the one-level moulding pipe (21) that combines with described second core (380); Second moving-member (372), this second moving-member (372) is combined on described second core (380) slidably, and touches described second and move the other end of sleeve pipe (373); The second demoulding pin (371), this second demoulding pin (371) connects described mobile guide member (340) and pressure-producing part (350), and links with described second moving-member (372).
6, hollow tube inside and outside moulding dress according to claim 4, it is characterized in that, described the 3rd stripper apparatus comprises: the 3rd moves sleeve pipe (480), the 3rd moves sleeve pipe (480) is combined on described the 3rd core (440) slidably, and the 3rd termination that moves sleeve pipe (480) contacts the end of the one-level moulding pipe (21) that combines with described the 3rd core (440); The 3rd moving-member (470), the 3rd moving-member (470) is combined in described the 3rd core (440) slidably, and touches the described the 3rd and move the other end of sleeve pipe (480); The 3rd demoulding pin (460), the 3rd demoulding pin (460) and described the 3rd moving-member (470) interlock.
7, a kind of inside and outside forming method of hollow tube, the inside and outside forming method of this hollow tube is used for forming sawtooth at hollow tube one end outer peripheral face, form guide groove and outer peripheral face with the definite shape final molding at hollow tube other end inner peripheral surface, it is characterized in that the inside and outside forming method of described hollow tube comprises:
Preliminary forming step, this preliminary forming step forms tapered portion and minor diameter part at an end of described hollow tube, begins to take shape guide groove and forms polygon at the outer peripheral face of this other end at the inner peripheral surface of the other end of described hollow tube simultaneously;
Final molding step, this final molding step are carried out final molding according to the meander-shaped of described inner peripheral surface to the described outer peripheral face of polygon when described minor diameter part forms sawtooth.
8, hollow tube as claimed in claim 7 inside and outside forming method is characterized in that the outer peripheral face of described minor diameter part is a polygon.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070066748 | 2007-07-03 | ||
| KR10-2007-0066748 | 2007-07-03 | ||
| KR1020070066748A KR100888255B1 (en) | 2007-07-03 | 2007-07-03 | Pipe inner and outer forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101337239A true CN101337239A (en) | 2009-01-07 |
| CN101337239B CN101337239B (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101086536A Active CN101337239B (en) | 2007-07-03 | 2008-05-30 | Hollow pipe internal and external forming device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100888255B1 (en) |
| CN (1) | CN101337239B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056209A (en) * | 2011-10-21 | 2013-04-24 | 高屋股份有限公司 | Manufacture method of break piston |
| CN109967675A (en) * | 2017-12-26 | 2019-07-05 | 丰田自动车株式会社 | Convex surface manufacturing process and convex surface forming device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139287B (en) * | 2010-11-19 | 2013-03-06 | 无锡曙光模具有限公司 | Stamping die for necking of pipe body |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000176591A (en) | 1998-12-17 | 2000-06-27 | Ondo Kosakusho:Kk | Method for forging pipe metallic tool |
| JP2003071538A (en) * | 2001-09-04 | 2003-03-11 | Kawasaki Seikoki:Kk | Manufacturing method of pipe-shaped processed goods |
| KR100590117B1 (en) * | 2004-08-26 | 2006-06-19 | 이재구 | Wheel shaft production method |
-
2007
- 2007-07-03 KR KR1020070066748A patent/KR100888255B1/en active IP Right Grant
-
2008
- 2008-05-30 CN CN2008101086536A patent/CN101337239B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056209A (en) * | 2011-10-21 | 2013-04-24 | 高屋股份有限公司 | Manufacture method of break piston |
| CN109967675A (en) * | 2017-12-26 | 2019-07-05 | 丰田自动车株式会社 | Convex surface manufacturing process and convex surface forming device |
| CN109967675B (en) * | 2017-12-26 | 2021-06-29 | 丰田自动车株式会社 | Convex surface forming method and convex surface forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100888255B1 (en) | 2009-03-10 |
| CN101337239B (en) | 2010-10-27 |
| KR20090003794A (en) | 2009-01-12 |
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