CN1511665A - Method and its device for forming internal screw thread on nut - Google Patents
Method and its device for forming internal screw thread on nut Download PDFInfo
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- CN1511665A CN1511665A CNA021597030A CN02159703A CN1511665A CN 1511665 A CN1511665 A CN 1511665A CN A021597030 A CNA021597030 A CN A021597030A CN 02159703 A CN02159703 A CN 02159703A CN 1511665 A CN1511665 A CN 1511665A
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Abstract
The apparatus for forming internal screw thread in nut includes one driven rotary screw tap, one driving unit and one control unit on the driving unit, and the control unit includes one rear sensor, one relay sensor and one front sensor. When the nut blank is fed to behind the screw tap, the rear sensor senses it and the driving unit is made to push the blank forward to the screw tap in the first pressure. After the first turn of screw thread is tapped, the relay sensor senses and the driving unit is made to push the blank forward with a relatively small pressure for tapping the internal screw thread. In finishing the tapping, the front sensor will make the driving unit back to original position.
Description
Technical field
The present invention relates to a kind of manufacturing process and device thereof, particularly a kind of method and device of the internal thread that in nut, is shaped.
Background technology
The manufacturing of general nut, be that the wire rod of rolling is sent in the nut shaping machine substantially, become the stock of predetermined length through charging straightening, blank, these stocks are pinched in regular turn step by step to plural decompressor, carry out a series of forging and die-cut, become the circular nut semi-finished product with predetermined profile and a central hole, then send the nut semi-finished product after this impact forging to continue tapping operation again, make internal thread to attack on the internal face that defines this perforation at the nut semi-finished product, to finish the manufacturing of nut.
And tap is the cutting instrument of making internal thread that is exclusively used in, and is the multiple whorl body of rod that a front end has predetermined cutting angle and quantity, attacks or workpiece via rotary screw during use, makes in the half-finished perforation of this nut of tap precession and cuts out internal thread.Manual screw is attacked and mild steel machine screw is attacked and general tap can be divided into.Manual screw is attacked to be attacked by first tap, second tap, three and is formed one group, and every all has the external screw thread that is used to cut out pre-fixed inclination, these taps is shot in these nut semi-finished product, to form predetermined internal screw thread form in regular turn during use.And mild steel machine screw is attacked and is called the tapping machine, it is a side that a tap with predetermined profile is installed in a board, and accept the opposite side that the half-finished bearing of this nut is installed in this board with one, can make this tap shoot this nut semi-finished product relatively during use, or making this bearing drive these nut semi-finished product shifts to this tap relatively, and swivel nut is in the tap periphery, and can return by automatic reverse when cutting to fixed point in attacking, to cut out internal thread automatically.Below be that internal thread at this tapping machine and its institute's tapping illustrates.
As shown in Figures 1 and 2, known tapping machine 1 comprises: a board 11, one be installed in these board 11 tops and be installed in plural nut semi-finished product 12 go into barrel 13, one is installed in this bottom of going into barrel 13 and these nut semi-finished product 12 can be directed to one by one guide seat 14 on this board 11 downwards, one is installed in this goes in the barrel 13 and can stir to make these nut semi-finished product 12 enter agitating device 15 in this guide seat 14, one is installed in the front side of this board 11 and can be driven and the tap 16 that rotates around a horizontal axis, one is installed in the rear side of this board 11 and is positioned at the pneumatic cylinder 17 of the below of this guide seat 14, and one is installed in the discharge barrel 19 that these tap 16 the place aheads are used to export the nut 18 that tapping finishes.Each nut semi-finished product 12 has an internal face 121, and this internal face 121 defines a perforation.This tap 16 has the external screw thread 161 that is formed at around the leading portion.This pneumatic cylinder 17 is used for these nut semi-finished product 12 are moved to this tap 16 places tapping, and have a pair of should tap 16 and controlled and can arrive these dead points, back and the back sensor 172 of driving cylinder axle 171 reaches by this cylinder axle 171 of sensing between a preceding dead point and dead point, a back along the cylinder axle 171, that this horizontal axis moves, and one can these cylinder axle 171 these preceding dead points of arrival of sensing and the preceding sensor 173 that moves behind the driving cylinder axle 171.
When starting, this tap 16 is driven and rotates with default speed, and these nut semi-finished product 12 also are guided cylinder axle 171 the place aheads that seat 14 is directed to this pneumatic cylinder 17, at this moment, this pneumatic cylinder 17 can drive this cylinder axle 171 reaches, and promote these nut semi-finished product 12 and shift to this tap 16, make these nut semi-finished product 12 by the tap 16 in this rotation, tap 16 is stretched through into perforation, and on the internal face 121 of these nut semi-finished product 12 tapping thread 122, to finish the tapping operation, sensor 173 move up to these back sensor 172 places after will drive this cylinder axle 171 before then being somebody's turn to do, with continuation tapping operation next time, and these nuts 18 of finishing tapping export next flow process to by this discharge barrel 19 again.
Yet, the cylinder axle 171 of this pneumatic cylinder 17 at preceding dead point and the back between the dead point suffered pressure identical, so these nut semi-finished product 12 are also identical by the pressure that cylinder axle 171 drives.In the use, if control personnel with the pressure of this pneumatic cylinder 17 adjust less, then when these nut semi-finished product 12 have just begun to touch this tap 16, make internal face 121 firmly be pressed against the periphery of this tap 16 with not having enough pressure, and the external screw thread 161 that makes tap 16 can not formally be attacked this internal face 121 of incision, so reach along with these nut semi-finished product 12, tap 16 in the rotation can't follow certain spiral path and attack and cut, the friction of only can on this internal face 121, skidding relatively, and form an aperture of boring a hole is big reaming, or forms rambling random tooth on internal face 121.If the user of service adjusts the pressure of this pneumatic cylinder 17 bigger, then when these nut semi-finished product 12 have just begun to touch this tap 16, though the external screw thread 161 of this tap 16 is tapping thread 122 on this internal face 121 relatively, but these nut semi-finished product 12 are subjected to pushes pressure and also can act on this tap 16, and the tap 16 in the rotation is slowed down because of being subjected to pushing resistance speed, but these nut semi-finished product 12 are still with set speed, pressure advances, because two sides' speed is inconsistent, the position that makes this external screw thread 161 shoot this internal face 121 is in regular turn produced skew, make a side of internal thread become the arc of non-rule, cause the internal screw thread form distortion of formed thereby.
If suitably adjust the pressure size of this pneumatic cylinder 17, make that the pressure that drives nut semi-finished product 12 is appropriate, then when tapping, these nut semi-finished product 12 can have enough suitable pressure this tap 16 of conflicting, make this tap 16 can cut this internal face 121, and on this internal face 121 tapping thread 122 successively.In addition, as shown in Figure 2, usually this tap 16 is because of making the nargin that is provided with machining accuracy, so direction as Fig. 2, the aperture that the right side of head end 162 diameter is partly bored a hole is smaller, and in the time of therefore in the perforation that stretches through, this right side four screw threads partly can not shot internal face 121, and the diameter that is marked with 123 external screw thread 161 among the figure just can equal perforation, so can formally shoot internal face 121.Yet after this tap 16 uses a period of time, these external screw threads 161 will become comparatively smooth because of wearing and tearing, particularly be positioned at the external screw thread 161 at head end 162 places of this tap 16, because of the depth of thread more shallow, so the unconspicuous situation of thread profile is more serious, particularly keep under certain situation at promotion pressure, when just beginning to contact tapping, each external screw thread 161 is shot the tooth of this internal face 121 in regular turn and is attacked center 123,124,125 ... will produce skew, particularly the tooth of the external screw thread 161 at head end 162 places is attacked center 123,124,125, this will cause the internal screw thread form distortion of the nut of formed thereby, make a side of internal thread become the trapezoidal arc of non-rule, especially the screw thread form of the first part of these internal threads is imperfect especially, and this tap 16 is using day to put down blunt because of serious wear especially long afterwards, as shown in Figure 3, label (1) → (2) → (3) → (4) are to demonstrate more first tapping in regular turn to the shape than the internal thread in each stage in the tapping of back, serious by the situation that can find out the internal thread distortion among the figure along with the time growth of using, so that make the fraction defective of the nut after the tapping high, make product quality have a greatly reduced quality.
Summary of the invention
The objective of the invention is, provide a kind of on nut the method and the device thereof of shaping internal thread, have the effect that screw thread form is complete and precision is higher.
Provided by the invention on nut the method for shaping internal thread, be to utilize the tapping machine internal thread that on the half-finished internal face of the nut of a hollow, is shaped, this internal face defines a perforation, this tapping machine comprises a board, one is installed in a front side of this board and can be driven and the tap that rotates around a horizontal axis, an and passing unit that is installed in a rear side of this board, this tap has one and is formed with externally threaded head section, an and figure that extends forward from this section, this passing unit have accept these nut semi-finished product and can be driven and along this horizontal axis one the back dead point, one tapping point, and the bearing that moves back and forth between a preceding dead point, when the dead point, back, these nut semi-finished product are the rears that are located at interval at this tap, when tapping point, these nut semi-finished product are leading edge peripheries that are nested with the head section that is closely against this tap, when preceding dead point, these nut semi-finished product are whole by this section, and be nested with a periphery at the figure of this tap, and this method is to carry out according to following step: (1) this passing unit is at this dead point, back, and above-mentioned nut semi-finished product are led on the bearing of this passing unit, make above-mentioned perforation over against this tap.(2) this is passed the unit and passes pressure with one first, and this bearing is passed forward to this tapping point by this dead point, back together with the nut semi-finished product.(3) arrive this tapping point when these nut semi-finished product, and the tap in this rotation can be attacked on the half-finished internal face of this nut when being cut into internal thread of shape relatively, this passes the unit can pass pressure less than second of the first passing pressure with one immediately, continue to pass these nut semi-finished product, the tap of these nut semi-finished product in this rotation shot relatively, on internal face, to be formed with internal thread.(4) move to preceding dead point when finishing tapping after, this passing unit pulls back to the dead point, back with being about to bearing.
Provided by the invention on nut the device of shaping internal thread, be to be used on the half-finished internal face of the nut of a hollow, being shaped internal thread, this internal face defines a perforation, and this device comprises: the unit is passed in a board, a tapping unit,, and a control module.This tapping unit is installed in a front side of this board, and has one and can be driven and the tap that rotates around a horizontal axis, and this tap has one and is formed with externally threaded head section in a periphery, and a figure that extends forward from this section.This passing unit and this tapping unit are installed in a rear side of this board at intervals, and have accept above-mentioned nut semi-finished product and can be controlled and along this horizontal axis at dead point, a back, one tapping point, and the bearing that moves back and forth between a preceding dead point, with together with pushing these nut semi-finished product to this tap forward, when moving to the dead point, back, these nut semi-finished product are the rears that are located at interval at this tap, when moving to tapping point, these nut semi-finished product are leading edge peripheries that are nested with the head section that is closely against this tap, when moving to preceding dead point, these nut semi-finished product are whole by this section, and be nested with in a periphery of the figure of this tap, and the half-finished internal face of this nut is cut the tapping internal thread by this tap.This control module is to be installed on this passing unit, and sensor after having, one relaying sensor, and sensor before, when this passing unit is positioned at this dead point, back, this back sensor will sensing and make this passing unit pass this bearing of pressure-driven together with this nut semi-finished product reach with one first, when this passing unit arrives this tapping point, and the tap in this rotation can be attacked on the half-finished internal face of this nut relatively and be cut when being formed with an internal thread, this relaying sensor will sensing and make this passing unit pass second of pressure with one less than first passing this bearing of pressure-driven together with this nut semi-finished product reach, the tap of these nut semi-finished product in this rotation shot relatively, on internal face, to be formed with internal thread, when this passing unit moved to this preceding dead point, this preceding sensor will sensing and is moved back into this dead point, back after making the bearing of this passing unit.
Characteristics of the present invention and advantage are: in the tapping process, passing the unit can begin at first to be tight against on tap at the nut semi-finished product, push the nut semi-finished product with bigger and enough pushing and pressing pressure, the external screw thread of tap can really and be made deep cuts in this internal face, article one internal thread is shaped, then reduce this pushing and pressing pressure immediately, make these nut semi-finished product not cause tap to slow down under the situation of burden, continue relatively on internal face, to attack along the rotation of this tap and be cut into shape and go out the internal thread that shape is complete and precision is higher.In addition, solve the situation of this tap because of the wearing and tearing rust in order to arrange in pairs or groups, in the tapping operation if begin to occur the incomplete situation of screw thread form, the staff can adjust the position of this relaying sensor, just can be shaped the once more shape of complete internal thread prolongs service life of this tap thus.
Description of drawings
Fig. 1 is a schematic side view of known tapping machine;
Fig. 2 is the partial schematic sectional view of Fig. 1, shows the local state of a head end relative tapping in a nut of a tap, and nut wherein only demonstrates a local part;
Fig. 3 is the shape schematic diagram of the internal thread made with known technology, and (1) among the figure → (2) → (3) → (4) are to demonstrate this tap in regular turn in use for some time, because of the flat blunt institute of wearing and tearing tapping gradually earlier to than after each stage internal screw thread form;
Fig. 4 is a schematic side view of a preferred embodiment of device of the present invention;
Fig. 5 is a broken section vertical view of the preferred embodiment of device of the present invention, shows a tapping unit and a part of relative configurations of passing the unit;
Fig. 6 is a broken section vertical view of the preferred embodiment of device of the present invention, demonstrates this passing unit and promotes nut semi-finished product forward, makes a tap half-finished state of this nut of spiral shell of attacking against each other mutually.
The specific embodiment
Below in conjunction with drawings and Examples device and method of the present invention is elaborated:
As Fig. 4 and shown in Figure 5, one preferred embodiment of device of the present invention is to be used at grommet nut semi-finished product 2 internal thread that is shaped, the nut semi-finished product 2 of this belt washer have one and define the outside wall surface 22 that a perforation internal face 21, of 24 has predetermined profile, and a washer portion 23 that protrudes out from an ora terminalis radial outward of this outside wall surface.The device of this shaping internal thread on nut is a tapping machine just, and comprises a board 3, a feed unit 4, a tapping unit 5, a passing unit 6, and a control module 7.
This board 3 has a upright front side portion 31 at forward and backward interval, the rear lateral portion 32 of a level, and two guide rods 33 that connect these 31,32 of forward and backward sidepieces and parallel interval.This front side portion 31 has the relative forward and backward sidewall in forward and backward interval 311,312.
This feed unit 4 has a barrel 41, of going into that is installed in a top of this board 3 and can be installed in described nut semi-finished product 2 and is installed in this bottom of going into barrel 41 and these nut semi-finished product 2 can be directed to guide seat 42 on the board 3 downwards, and one be installed in this go in the barrel 41 and can be driven and stir described nut semi-finished product 2 stir flitch 43.This goes into barrel 41 is the open hollow cylinder in the end, a top.This guide seat 42 is a upright plate piece, and have one and be connected to be communicated with this slideway 421 of going into a bottom of barrel 41 and uprightly extending to 31,32 of this forward and backward sidepieces, this slideway 421 has and only holds the width that nut semi-finished product 2 pass through, and the washer portion 23 of these nut semi-finished product 2 is dropped down onto on the board 3 backwards.
This tapping unit 5 is the place aheads that are installed on the front side portion 31 of this board 3 and are located at interval at above-mentioned nut semi-finished product 2, and has an assembly 51 that resets that is installed on these guide rods 33, one is fixed on the rear wall 312 of this front side portion 31 and quill shaft bearing 52 that front and back are communicated with, one plural bearing 531 of cooperation and packing ring 532 are set on the hollow main shaft 53 in this bearing block 52, one is fixed on the peripheral of this main shaft 53 and is driven and drives this main shaft 53 pivoted pulley 54, one is set in this main shaft 53 and is driven by main shaft 53 and the hollow sleeve assembly 55 that rotates, one contact drives and the drive block 56 of rotation in the leading edge of this main shaft 53 and by this sleeve combination body 55, one is resisted against the leading edge of this drive block 56 and can be driven piece 56 drives and the block 57 of rotation, one is fixed on the front side wall 311 of this front side portion 31 and for the discharge barrel 58 of this block 57 pivots dress, and one stretches through in this sleeve combination body 55 and the assembly 51 that resets and can be driven and the tap 59 that rotates around a horizontal axis.This assembly 51 that resets has a slide 511 that is set on 33 of these guide rods slippingly, and two be nested with respectively on guide rod 33 and contact at the spring 512 of 3 of this slide 511 and boards.This slide 511 have one for this tap 59 stretch through and diameter greater than the perforation 513 of the external diameter of these nut semi-finished product 2.This main shaft 53 is rotatably to be set on this rear wall 312.This belt pulley 54 can be driven and rotate by a power source 541.This sleeve combination body 55 has an inner tube surface and the rubber-like spring leaf 552 that a tube wall 551, around this horizontal axis protrudes into this tube wall 551, and a nose bar 553 of front end that radially is fixed on an outer tube surface of this tube wall 551.This tube wall 551 has a fluting 554 that is formed at a leading portion upper half part, makes these tube wall 551 leading portions become a upper half part and lacks empty semi-circular arc piece.This nose bar 553 is that contact is positioned this drive block 56, can drive this drive block 56 and together rotate when rotating.This drive block 56 is one to be nested with the ring bodies in the periphery of this tube wall 551, and has the open and corresponding short slot 561 that is arranged in this fluting 554 of a radial outward.This discharge barrel 58 is hollow cases that a capping is enclosed in 57 of the leading edge of this main shaft 53 and blocks, and has a discharging opening 581 that is positioned at the below.This tap 59 has and is formed at one and protrudes out outer head section 591, one figure 592 that stretches through in this slide 511 and sleeve combination body 55 of this slide 511 backward, and a prying and protrude into rear 593 in this short slot 561 forward and upwards.This section 591 is one by the mast of bundle that contracts that tilts gradually behind the forward direction, and has and be formed at peripheral external screw thread 594, these external screw threads 594 by after be forward first screw thread, second screw thread, the 3rd screw thread in regular turn ... Deng.
This passing unit 6 is to be installed in the rear side of this board 3 and to be adjacent to above-mentioned nut semi-finished product 2, and has a bearing 61 that is set on slippingly on this guide rod 33, one is fixed on the pneumatic cylinder 62 of a rear lateral portion 32 of this board 3, one is connected the connecting rod 63 of 61 of this pneumatic cylinder 62 and bearings, two can be at a jaw 64 that clips a front end two sides that swingingly are articulated in this bearing 61 between a position and an ejected position, two be fixed in the front end of this bearing 61 respectively and be positioned at these jaws 64 the outside protrude out bar 65, and two are connected to this and protrude out a front end of bar 65 and the spring 66 of jaw 64.This bearing 61 has one and can accept the location and carry chamber 611 by the nut semi-finished product 2 of this guide seat 42 landing down to the board 3.This pneumatic cylinder 62 can be controlled and be driven this connecting rod 63 and bearing 61, along this horizontal axis dead point after, one tapping point, and move back and forth between a preceding dead point, to push these nut semi-finished product 2 to this tap 59 forward, make tap 59 relatively by this perforation 24, when moving to the dead point, back, these nut semi-finished product 2 are the rears that are located at interval at this tap 59, when moving to tapping point, the leading edge of these nut semi-finished product 2 is to be nested with on the trailing edge of the head section 591 that is closely against this tap 59, be positioned at about the 4th screw thread place, make this internal face 21 just be connected to the periphery of this section 591, when moving to preceding dead point, these nut semi-finished product 2 are whole by head section 591, and be nested with in a periphery of the figure 592 of this tap 59, and the internal face 21 of these nut semi-finished product 2 is cut the tapping internal thread by the external screw thread 594 of this tap 59.Each jaw 64 has one and clips on the outside wall surface of these nut semi-finished product 2 and the end 641, that clips that is positioned at these washer portion 23 the place aheads clips the link 642 that end 641 and ammunition feed spring 66 connect in contrast to this, and one is positioned at this and clips end 641 and 642 of links and be hubbed on articulated section 643 on this bearing 61.This protrudes out bar 65 and has a stiff end 651 that is positioned at these jaw 64 the place aheads and connects for this spring 66.When this bearing 61 was pushed reach, these jaws 64 were to clip the position, and these clip end 641 to fixing on the outside wall surface 22 of these nut semi-finished product 2.When this bearing 61 is moved after the place ahead of the head section 591 of tap 59 is pulled, these jaws 64 are in ejected position, just these jaws 64 are when clipping end 641 through this washer portion 23, pushed by this washer portion 23 and be center swing forward with this articulated section 643, simultaneously also swing this spring 66 that stretches backward of these links 642 has this spring 66 and makes this jaw 64 be reset to the elastic force that clips the position.
This control module 7 is to be installed on the pneumatic cylinder 62 of this passing unit 6, and has a back sensor 71, a relaying sensor 72, and sensor 73 before.When this passing unit 6 is positioned at this dead point, back, this back sensor 71 will sensing and make the pneumatic cylinder 62 of this passing unit 6 pass pressure with one first, promote bearing 61 and 2 reaches of nut semi-finished product, when this passes unit 6 these tapping points of arrival, this relaying sensor 72 will sensing and make the pneumatic cylinder 62 of this passing unit 6 pass second of pressure with one less than first passing pressure, drive socket 61 and 2 reaches of nut semi-finished product, when this passing unit 6 moved to this preceding dead point, this preceding sensor 73 will sensing and the pneumatic cylinder 62 that makes this passing unit 6 second is passed and is moved back into this dead point, back after pressure drives bearing 61 with this.
As Fig. 4, Fig. 5 and shown in Figure 6, before starting, get plural nut 8 coaxial being nested with outside the figure 592 of this tap 59 earlier, and second nut that is positioned at the forefront supported the fixed limit position by this spring leaf 552, can make this tap 59 stably be arranged in this sleeve combination body 55 by propping up of these nuts 8, and this rear 593 is leading edges that are resisted against this main shaft 53, and a preferred embodiment of method of the present invention is to carry out according to following step:
(1) adjust the position of this relaying sensor 72, make the position of the tapping point of this passing unit 6, the leading edge that is about these nut semi-finished product 2 is supported the 4th screw thread place that cover is fitted in the head section 591 of this tap 59.
(2) dead point after this passing unit 6 is positioned at this, and above-mentioned nut semi-finished product 2 is that washer portion 23 is led to carrying in the chamber 611 of this bearing 61 backwards, and is positioned at these jaw 64 clampings location that clip the position, to make above-mentioned perforation 24 over against this tap 59.
(3) this back sensor 71 can start and make the pneumatic cylinder 62 of this passing unit 6 pass this bearing 61 of pressure-driven together with 2 reaches of nut semi-finished product with one first, so that these nut semi-finished product 2 are passed forward to this tapping point by this dead point, back, when these nut semi-finished product 2 contacts arrive this tap 59, can will push away before this tap 59 earlier, the rear 593 of this tap 59 is resisted against forward on this block 57.
(4) when these tap 59 location no longer move forward, the 4th screw thread of the head section 591 of the tap 59 in this rotation can be attacked on the internal face 21 of these nut semi-finished product 2 relatively and is cut into shape and go out article one internal thread, this moment, these nut semi-finished product 2 were sitting at this tapping point, this relaying sensor 72 can start, and make the pneumatic cylinder 62 of this passing unit 6 drive this bearing 61 less than the first second passing pressure of passing pressure with one, transfer forward together with these nut semi-finished product 2, this internal face 21 can the head section 591 in rotation be shot relatively, be cut into shape and go out internal thread on the internal face 21 of these nut semi-finished product 2, to attack, simultaneously, this bearing 61 also pushes this assembly 51 that resets of drive, makes this spring 512 have one and moves the elastic force that resets after making slide 511.
(5) when these nut semi-finished product 2 by this section 591 and when finishing tapping and moving to preceding dead point, this nut 8 of finishing tapping just is nested with on this figure 592, and 8 on the nut that is positioned at the forefront is pushed forward, break away from the spacing of this spring leaf 552, and be thrown out of this rear 593, fall into this discharge barrel 58, send by discharging opening 581 again, simultaneously, should can startup make the pneumatic cylinder 62 drive bearings 61 of this passing unit 6 move backward by preceding sensor 73, at this moment, this nut 8 of finishing tapping can be limited in this section 591 the place aheads, and these jaws 64 then this washer portion 23 of finishing the nut 8 of tapping of quilt push, and with this articulated section 643 be the center forward swing to ejected position, when these jaws 64 pass through this washer portion 23, exactly by the elastic force of this spring 66 and return back to and clip the position, and after when moving to these section 591 rears, clip the nut semi-finished product 2 that fall in regular turn, and when bearing 61 was retracted into the dead point, back, this slide 511 was also by the elastic force of this spring 512 and homing.
(6) heavily be covered with step (2)-(5 of stating).
From the above, at tapping point to the process at preceding dead point, these nut semi-finished product 2 are to be nested with on tap 59, with the shaping internal thread, therefore the present invention is in this tapping process, can begin at first to be tight against on tap 59 at nut semi-finished product 2, just when the 4th screw thread place, push nut semi-finished product 2 with bigger and enough pushing and pressing pressure, the external screw thread 594 of tap 59 can really and be made deep cuts in this internal face 21, article one internal thread is shaped, then reduce this pushing and pressing pressure immediately, make these nut semi-finished product 2 not cause tap 59 to slow down under the situation of burden, continue relatively on internal face 21, to attack along the rotation of this tap 59 and be cut into shape and go out the complete internal thread of shape.In addition, solve the situation of this tap 59 because of the wearing and tearing rust in order to arrange in pairs or groups, in the tapping operation, experienced staff can pick up the nut 8 of having finished tapping, observe the shape of internal thread,, will adjust the position of this relaying sensor 72 if the incomplete situation of screw thread form is arranged, for example making this tapping point is the 5th screw thread place that is positioned at this tap 59, the shape of the complete internal thread that can be shaped.In practical operation, generally when being adjusted to when making this tapping point be positioned at the 9th screw thread place, the incomplete situation of this screw thread form also can't be improved, just the head section 591 of this tap 59 has worn up to and has been difficult to use, so adjust the appropriate location of this relaying sensor 72 as can be known, even this tapping point is positioned at the 8th screw thread place, it is the long life of this tap 59, so in above-mentioned steps (1), can be directly with the position of this relaying sensor 72, be adjusted to the leading edge that makes these nut semi-finished product 2 and be nested with the 8th screw thread place at this tap 59, when being checked through screw thread form incomplete situation is arranged, it is passable once new tap 59 to change the outfit again.
Take a broad view of above-mentioned, structure of the present invention, feature can provide really a kind of on nut the method and the device thereof of shaping internal thread, have the effect that screw thread form is complete and precision is higher, and can reach predetermined goal of the invention.
Claims (5)
1. the method for a shaping internal thread on nut, be to utilize the tapping machine internal thread that on the half-finished internal face of a nut, is shaped, this internal face defines a perforation, and this tapping machine comprises a board, one is installed in this board front side and is driven and the tap that rotates around a horizontal axis, an and passing unit that is installed in this board rear side, this tap has one and is formed with externally threaded head section, an and figure that extends forward from this section, this passing unit have accept these nut semi-finished product and can be driven and along this horizontal axis one the back dead point, one tapping point, and the bearing that moves back and forth between a preceding dead point, when the dead point, back, these nut semi-finished product are the rears that are located at interval at this tap, when tapping point, these nut semi-finished product are leading edge peripheries that are nested with the head section that is closely against this tap, and when preceding dead point, these nut semi-finished product are whole by this section, and be nested with in a periphery of the figure of this tap, it is characterized in that this method is to carry out according to following step:
(1) this dead point after this, passing unit, and above-mentioned nut semi-finished product is led on the bearing of this passing unit, makes above-mentioned perforation over against this tap;
(2) this is passed the unit and passes pressure with one first, and this bearing is passed forward to this tapping point by this dead point, back together with the nut semi-finished product;
(3) arrive this tapping point when these nut semi-finished product, and the tap in this rotation can be attacked on the half-finished internal face of this nut relatively and be cut when being formed with an internal thread, this passes the unit can pass pressure less than second of the first passing pressure with one immediately, continue to pass these nut semi-finished product, the tap of these nut semi-finished product in this rotation shot relatively, on internal face, to be formed with internal thread; And
(4) move to preceding dead point when finishing tapping after, this passing unit pulls back to this dead point, back with being about to bearing.
2. the device of a shaping internal thread on nut, be to be used on the half-finished internal face of a nut, being shaped internal thread, this internal face defines a perforation, and this device comprises the passing unit that tapping unit, that a board, is installed in this board front side is installed in this board rear side, and a control module that is installed on this passing unit, it is characterized in that:
This tapping unit has one and can be driven and the tap that rotates around a horizontal axis, and this tap has a periphery and is formed with externally threaded head section, and a figure that extends forward from this section;
This passing unit have accept above-mentioned nut semi-finished product and can be controlled and along this horizontal axis at dead point, a back, one tapping point, and the bearing that moves back and forth between a preceding dead point, with together with pushing these nut semi-finished product to this tap forward, this dead point, back is the rear that these nut semi-finished product are positioned at this tap, this tapping point is the leading edge periphery that these nut semi-finished product are nested with the head section that is closely against this tap, this preceding dead point is that these nut semi-finished product are whole by this section, and be nested with outside the figure of this tap and place, and the half-finished internal face of this nut is cut the tapping internal thread by this tap; And
This control module has a back and can sensing during the dead point makes this passings unit pass this bearing of pressure-driven with one first attacking when cutting out an internal thread relaying sensor of can sensing and making this passings unit move forward together with these nut semi-finished product with one second this bearing of passing pressure-driven together with the back sensor of this nut semi-finished product reach, relatively at tapping point and tap on internal face, and one can sensing when moving to this preceding dead point and make this bearing be moved back into the preceding sensor at this dead point, back backward, and above-mentioned second passes pressure less than the first passing pressure.
3. as claimed in claim 2 on nut the device of shaping internal thread, it is characterized in that: this passing unit has more a pneumatic cylinder, and one connect this pneumatic cylinder and bearing so that pneumatic cylinder can this bearing of interlock connecting rod.
4. as claimed in claim 3 on nut the device of shaping internal thread, it is characterized in that: these nut semi-finished product have more the outside wall surface of a predetermined profile, an and washer portion that protrudes out from an ora terminalis radial outward of this outside wall surface, this passing unit has more two can be at a jaw that clips a front end two sides that swingingly are articulated in this bearing between a position and an ejected position, two be fixed in the front end of this bearing respectively and be positioned at these jaws the outside protrude out bar, reach two and be connected to this front end that protrudes out bar and the spring of jaw, each jaw has one and clips on this outside wall surface and be positioned at the end that clips in this washer portion the place ahead, one clips the link that end and ammunition feed spring connect in contrast to this, and one be positioned at this and clip between end and link and be hubbed on articulated section on this bearing, and this protrudes out bar and has a stiff end that is positioned at this jaw the place ahead and connects for this spring.
5. as claimed in claim 2 on nut the device of shaping internal thread, it is characterized in that: more comprise a feed unit, this feed unit has one and is installed in a top of this board and can be installed in that described nut is half-finished goes into barrel, and be installed in this bottom of going into barrel and these nut semi-finished product can be directed to guide seat on the board downwards, and one is installed in this and goes in the barrel and can be driven and stir the half-finished flitch that stirs of described nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021597030A CN1511665A (en) | 2002-12-30 | 2002-12-30 | Method and its device for forming internal screw thread on nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021597030A CN1511665A (en) | 2002-12-30 | 2002-12-30 | Method and its device for forming internal screw thread on nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1511665A true CN1511665A (en) | 2004-07-14 |
Family
ID=34237600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021597030A Pending CN1511665A (en) | 2002-12-30 | 2002-12-30 | Method and its device for forming internal screw thread on nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1511665A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922060A (en) * | 2012-11-01 | 2013-02-13 | 丰兴精密产业（惠州）有限公司 | Automatic tapping machine for internal threads of miniature nuts |
| CN110280845A (en) * | 2019-07-19 | 2019-09-27 | 西北机电工程研究所 | The processing method and processing tool of double fixed point screw threads |
-
2002
- 2002-12-30 CN CNA021597030A patent/CN1511665A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922060A (en) * | 2012-11-01 | 2013-02-13 | 丰兴精密产业（惠州）有限公司 | Automatic tapping machine for internal threads of miniature nuts |
| CN102922060B (en) * | 2012-11-01 | 2015-12-02 | 丰兴精密产业（惠州）有限公司 | Miniature nut inner thread automatic tapping machine |
| CN110280845A (en) * | 2019-07-19 | 2019-09-27 | 西北机电工程研究所 | The processing method and processing tool of double fixed point screw threads |
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