CN105057714A - Automatic-feeding lathe tailstock mechanism - Google Patents
Automatic-feeding lathe tailstock mechanism Download PDFInfo
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- CN105057714A CN105057714A CN201510574839.0A CN201510574839A CN105057714A CN 105057714 A CN105057714 A CN 105057714A CN 201510574839 A CN201510574839 A CN 201510574839A CN 105057714 A CN105057714 A CN 105057714A
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- driven wheel
- gear
- fork
- driving
- rotating shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
Abstract
The invention relates to an automatic-feeding lathe tailstock mechanism. The automatic-feeding lathe tailstock mechanism comprises a frame body and a driving mechanism and a pushing mechanism which are installed on the frame body; the driving mechanism and the pushing mechanism are linked through pushing fork rods, the driving mechanism is driven by a power device and drives a drill bit to act, and the driving mechanism can drive a driving gear to conduct forward rotation and reverse rotation; the pushing mechanism comprises a pushing rod which is arranged in a sliding mode, and the two pushing fork rods are located on the out sides of the two ends of the driving gear respectively; one end of a driving shaft is provided with a screw, and a thread sleeve connected with a curved rod is connected to the screw in a sleeving mode; an oscillating rod is connected with the pushing rod through a first rotating shaft and connected with a chain rod through a second rotating shaft, and the oscillating rod rotates through a third rotating shaft; the two ends of a chain are connected with the free end of the chain rod and the free end of the curved rod, and the free end of the chain rod and the free end of the curved rod can be in butt joint; one end of a first spring is fixedly connected to the portion, located on the position of the second rotating shaft, of the oscillating rod, and the other end of the first spring is fixedly connected to a fixing block; the pushing rod is further provided with a protruding block, and the protruding block is linked with a stopping mechanism.
Description
Technical field
The present invention relates to a kind of tail stock, particularly relate to a kind of lathe back stand mechanism of auto-feed.
Background technology
Engine lathe is holed, general way is arranged in the taper hole of tailstock cylinder by the taper shank of drill bit, is fixed on by tailstock on lathe guide rail, then the handwheel of manual operation hand-operated tailstock rear end, make tailstock cylinder along the axial advancement of drill bit, realize the translation feed of drill bit; Otherwise oppositely shake handwheel, tailstock cylinder is retreated along the axis of drill bit, realizes drill bit translation withdrawing.This method is for production in enormous quantities axis hole, the especially operation of through hole, and labour intensity is large, and efficiency is low.
Therefore, for general Drilling operation, especially large batch of through hole processing, needs to design a set of mechanical transmission mechanism, realizes the automatic running of hand wheel rotating, commutation, stopping, substituting manually hand.
This type of mechanism is generally made up of the driving mechanism of Power output and the toggle mechanism of control commutation.After a Workpiece boring completes, drill bit needs after retreating to suspend to change the outfit workpiece, in order to realize temporarily disconnected Power output when driving mechanism does not shut down, also needs a set of servicing unit to control toggle mechanism.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, provide a kind of and drive with spring swinging rod, the tail stock of the lathe back stand mechanism of a kind of auto-feed that chain is assisted.
For achieving the above object, the technical solution used in the present invention is: a kind of lathe back stand mechanism of auto-feed, comprise: support body, and the driving mechanism be arranged on support body and toggle mechanism, driving mechanism and toggle mechanism are connected by shifting fork bar, and described driving mechanism is driven by power set, and described driving mechanism drives drill bit action, it is characterized in that
-described driving mechanism can drive driven wheel to rotate and reverse;
-described toggle mechanism comprises the driving lever sliding and arrange, and described driving lever is arranged two shifting fork bars, two shifting fork bars lay respectively at outside the two ends of driven wheel;
Described driving shaft one end is provided with screw rod, and the swivel nut thread bush connecting knee is connected on described screw rod;
Fork sets gradually the first rotating shaft, the second rotating shaft and the 3rd rotating shaft, fork connects driving lever by the first rotating shaft, and fork is by the second rotating shaft connection chain bar, and fork is rotated by the 3rd rotating shaft; Chain two ends connect the described free end of chain bar and the free end of knee respectively, and the free end of described chain bar and the free end of described knee can to together with withstanding on; One end of first spring is fixedly connected on the fork of the second rotating shaft place, and the first spring other end is fixedly connected on fixed block.
Described driving lever is also provided with projection, and described projection is connected with shut-down mechanism.
In a preferred embodiment of the present invention,
When-described driven wheel and described first gears meshing, the described first gear direction of described fork deflection, described first spring is positioned at side, described fork offset direction;
When-described driven wheel and described second gears meshing, the described second gear direction of described fork deflection, described first spring is positioned at side, described fork offset direction.
In a preferred embodiment of the present invention, described first spring is in extended state.
In a preferred embodiment of the present invention,
When-described driven wheel and described first gears meshing, described in described screw drive, swivel nut is away from described driven wheel, and described chain is in tensioned state;
When-described driven wheel and described second gears meshing, described in described screw drive, swivel nut is near driven wheel, and described chain is in relaxed state, and described chain bar free end and described knee free end are to together with withstanding on.
In a preferred embodiment of the present invention, the spacing described in two between shifting fork bar is greater than the axial length of described driven wheel.
In a preferred embodiment of the present invention, described fork free end both sides are respectively provided with a block.
In a preferred embodiment of the present invention, described driving lever two ends are slidably socketed respectively on each self-corresponding cover block.
In a preferred embodiment of the present invention, described driven wheel feather key is arranged on described driving shaft, described driven wheel displacement on the feather key of driving shaft be namely described first gear and described second gear shaft to distance.
In a preferred embodiment of the present invention, described driving mechanism comprises first gear and the second gear that can engage with driven wheel respectively, and described driven wheel is slidably arranged on driving shaft, and described first gear is contrary with described second gear direction of rotation;
Described first gear coaxial connection for transmission gear, described travelling gear and described second gears meshing.
In a preferred embodiment of the present invention, described shut-down mechanism comprises one end with the locking lever of sphenocephaly and a fixed head, the sphenocephaly of described locking lever stretches out outside described fixed head face, outside another face of stretching out described fixed head of sheathed the two the first springs of the described locking lever other end, described the two the first both ends of the spring are separately fixed on described fixed head and locking lever; Described sphenocephaly comprises a lozenges and a right-angle surface.
In a preferred embodiment of the present invention, the end of the locking lever on described shut-down mechanism is provided with handle.
In a preferred embodiment of the present invention, described first gear and described travelling gear are coaxially arranged on the first power transmission shaft, described second gear is arranged on second driving shaft, described first power transmission shaft and described second driving shaft be arranged in parallel, and described second gear and described travelling gear mesh together.
In a preferred embodiment of the present invention, described power set are motor, and described drill bit one end is coaxially provided with handwheel belt pulley.
In a preferred embodiment of the present invention, described first power transmission shaft connects described motor by belt, and described driving shaft belt connects described handwheel belt pulley.
The hand wheel shaft of the lathe position other end at described drill bit place is provided with handwheel belt pulley.
The invention solves the defect existed in background technology, the present invention possesses following beneficial effect:
(1) by the action of toggle mechanism, driven wheel can be shifted one's position between the first gear and the second gear, serve the effect of conversion driven wheel engagement object, simultaneously because the first gear is contrary with the second gear direction of rotation, ensure that each driven wheel conversion engagement object rear drive shaft all converts direction of rotation.
(2) direction of rotation of driving shaft and the direction of stirring of toggle mechanism form linkage structure just, when driven wheel and the first gears meshing, toggle mechanism driven shaft drives the tendency and power that toggle mechanism are had driven wheel is allocated to the second gear, and final driven wheel departs from the first gear, and the elastic potential energy of the first spring on fork is relied on to drive and the second gears meshing; Otherwise when driven wheel and the second gears meshing, toggle mechanism can make driven wheel counter motion.
(3) structure of feather key can ensure that the clip existed between driven wheel and driving shaft along driving shaft circumference limits on the one hand, ensure driven wheel can not circumferentially with driving shaft generation relative motion, on the other hand driven wheel can sliding axially along driving shaft, ensures that driven wheel moves between the first gear and the second gear.
(4) two shifting fork bars lay respectively at driven wheel both sides, driven wheel can driving lever drive under, along driving shaft axially-movable.
(5) athletic posture that block can limit driving lever is overlapped, the fork that first spring drives can be limited in certain hunting range by block simultaneously, and then the range of movement of driving lever is also defined, ensure the left and right skew that driving lever can not be excessive, only ensure that driven wheel converts the spacing of engagement between the first gear and the second gear.
(6) when driven wheel and the first gears meshing, fork offsets towards the first gear side, now the first spring straining fork, swivel nut by screw drive away from the first gear, then chain is tauted, and then pull fork to rotate towards the second gear side, when fork crosses vertical state, driven wheel and the first gear depart from, now fork just can pull and support towards the second gear side by the pulling force of the first spring, and fork is swung towards the second gear direction, driven wheel presses and the second gears meshing the most at last.
(7) shifting fork bar is constantly moved left and right along driving shaft by two shifting fork bars promotion driven wheels in the side-to-side movement process of driving lever, change engagement object.
(8) first rotating shafts, the second rotating shaft and the 3rd rotating shaft cooperatively interact, and make fork can with the 3rd rotating shaft for rotating in the center of circle, drive driving lever to move left and right, and then shift fork bar is followed driving lever and moved left and right.
(9) when the structure of chain can ensure swivel nut away from the first gear, chain is tauted, and chain adds the total length of chain bar and knee; Swivel nut chain when the first gear relaxes, and the end of knee and chain bar is to together with withstanding on, and total length does not now comprise the length of chain.
(10) by being flexible coupling of arranging, ensure that swivel nut is in reciprocatory movement, during promotion fork, spacing between swivel nut and fork can be produced the change of a chain length due to the change of chain, so auxiliary driving lever be promoted to change in location and the engagement object transformation of driven wheel.
(11) arranging of block ensures that the lower end of fork can not be departed from and overruns, and also namely fork can not make driving lever moving range excessive.
(12) structure of screw drive swivel nut, and then swivel nut provides power resources for toggle mechanism, because the rotation direction of screw rod is relevant with the object that driven wheel engages, so, the direction of motion of swivel nut is relevant with the rotation direction of driving shaft, and the rotation direction of driving shaft is subject to the control of toggle mechanism; Such said process just forms interactional cyclic motion process, and toggle mechanism and driving mechanism constantly affect continuous loop control.
Spacing between (13) two shifting fork bars is greater than the axial length of driven wheel, provides heterodromous inertia to cushion can to the motion of driven wheel.
Spacing between (14) two shifting fork bars is greater than the axial length of driven wheel, the length of being longer than gear is the length surpluses of two shifting fork bar spacing relative to driven wheel, due to the existence of above-mentioned surplus, fork is when being in vertical state, two shifting fork bars all can not stop by driven wheel, only need when fork crosses its vertical state to rely on inertia.
(15) travelling gear is coaxial with the first gear, and the second gear engages with travelling gear, achieves the reverse rotation of the first gear and the second gear.
(16) locking lever on shut-down mechanism can pull up by handle, and being stopped the projection that the right-angle surface in mechanism blocks like this can depart from constraint, and driving lever just can continue to move left and right, only otherwise pulling up mechanism just only can do monocyclic motion.
(17) projection can be blocked in the position of driven wheel just between the first gear and the second gear by the position that shut-down mechanism is arranged, and now driven wheel departs from engagement.
(18) by the gearing of driving mechanism, the object power of motor being transported to drill bit is achieved; Simultaneously by the effect of toggle mechanism, the engagement object of driven wheel can be converted, and then realize drill bit moving forward and backward and stopping after having retreated along its axis.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the three-dimensional structure diagram one of the preferred embodiments of the present invention;
Fig. 2 is the three-dimensional structure diagram two of the preferred embodiments of the present invention;
Fig. 3 is the three-dimensional structure diagram one of the preferred embodiments of the present invention toggle mechanism and driving mechanism;
Fig. 4 is the three-dimensional structure diagram two of the preferred embodiments of the present invention toggle mechanism and driving mechanism;
Fig. 5 is the three-dimensional structure diagram of shut-down mechanism of the present invention;
In figure: 1, first gear, 2, second gear, 3, driven wheel, 4, driving shaft, 5, feather key, 6, travelling gear, 7, driving lever, 8, shifting fork bar, 9, cover block, 10, screw rod, 11, swivel nut, 12, knee, 13, chain, 14, chain bar, 15, fork, 16, first rotating shaft, 17, second rotating shaft, 18, 3rd rotating shaft, 19, first spring, 20, block, 21, fixed block, 22, shut-down mechanism, 23, locking lever, 24, second spring, 25, sphenocephaly, 26, lozenges, 27, right-angle surface, 28, projection, 29, handle, 30, fixed head, 31, bolt locking devices, 32, support body, 33, first power transmission shaft, 34, second driving shaft, 35, motor, 36, drill bit, 37, belt, 38, handwheel, 39, handle, 40, handwheel belt pulley, 41, tail stock.
Detailed description of the invention
The present invention is further detailed explanation in conjunction with the accompanying drawings and embodiments now, and these accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As Figure 1-5, a kind of lathe back stand mechanism of auto-feed, comprising: support body 32, and the driving mechanism be arranged on support body 32 and toggle mechanism, driving mechanism and toggle mechanism are connected by shifting fork bar 8, and driving mechanism is driven by power set, driving mechanism drives drill bit 36 action
Driving mechanism comprises the driven wheel 3 that can engage with the first gear 1 and the second gear 2 respectively, and driven wheel 3 is slidably arranged on driving shaft 4, and the first gear 1 is contrary with the second gear 2 direction of rotation; Toggle mechanism comprises the driving lever 7 sliding and arrange, and driving lever 7 is arranged two shifting fork bar 8, two shifting fork bars 8 and lays respectively at outside the two ends of driven wheel 3; Two shifting fork bars 8 lay respectively at driven wheel 3 both sides, driven wheel 3 can driving lever 7 drive under, along driving shaft 4 axially-movable.
Driving shaft 4 one end is provided with screw rod 10, and swivel nut 11 thread bush connecting knee 12 is connected on screw rod 10; Screw rod 10 drives the structure of swivel nut 11, and then swivel nut 11 provides power resources for toggle mechanism, because the rotation direction of screw rod 10 is relevant with the object that driven wheel 3 engages, so, the direction of motion of swivel nut 11 is relevant with the rotation direction of driving shaft 4, and the rotation direction of driving shaft 4 is subject to the control of toggle mechanism; Such said process just forms interactional cyclic motion process, and toggle mechanism and driving mechanism constantly affect continuous loop control.
First gear 1 and travelling gear 3 are coaxially arranged on the first power transmission shaft 33, second gear 2 is arranged on second driving shaft 34, first power transmission shaft 33 be arranged in parallel with second driving shaft 34, second gear 2 meshes together with travelling gear 3, power set are motor 35, and drill bit 36 one end is coaxially provided with handwheel belt pulley 40.By the gearing of driving mechanism, achieve the object power of motor 35 being transported to drill bit 36; Simultaneously by the effect of toggle mechanism, the engagement object of driven wheel 3 can be converted, and then realize drill bit 36 moving forward and backward along its axis.
First power transmission shaft 33 connects motor 35 by belt 37, and driving shaft 4 belt 37 connects handwheel belt pulley 40.Belt pulley on belt pulley on motor 35, the first power transmission shaft 33, the belt pulley on driving shaft 4 and handwheel belt pulley 40 is by the gearing of two belts 37, and serve the effect of motor 35 rotational speed decelerates, the rotating speed of handwheel belt pulley 40 is lowered.The motor 35 that the present invention adopts also is slowspeed machine.
Handwheel belt pulley 40 end is provided with handwheel 38, and handwheel 38 is provided with handle 39, and handwheel 38 and arranging of handle 39 can realize manual operation driving drill bit 36 moving forward and backward along its axis.
Fork 15 sets gradually the first rotating shaft 16, second rotating shaft 17 and the 3rd rotating shaft 18, fork 15 connects driving lever 7 by the first rotating shaft 16, and fork 15 is by the second rotating shaft 17 connection chain bar 14, and fork 15 is rotated by the 3rd rotating shaft 18; Chain 13 two ends are the free end of connection chain bar 14 and the free end of knee 12 respectively, and the free end of chain bar 14 and the free end of knee 12 can to together with withstanding on; One end of first spring 19 is fixedly connected on the fork 15 at the second rotating shaft 17 place, and first spring 19 other end is fixedly connected on fixed block 21.First rotating shaft 16, second rotating shaft 17 and the 3rd rotating shaft 18 cooperatively interact, and make fork 15 with the 3rd rotating shaft 18 for the center of circle is rotated, drive driving lever 7 to move left and right, and then shift fork bar 8 to be followed driving lever 7 and moves left and right.
By the action of toggle mechanism, driven wheel 3 can be shifted one's position between the first gear 1 and the second gear 2, serve the effect that conversion driven wheel 3 engages object, simultaneously because the first gear 1 is contrary with the second gear 2 direction of rotation, ensure that each driven wheel 3 conversion engagement object rear drive shaft 4 all converts direction of rotation.
The direction of rotation of driving shaft 4 and the direction of stirring of toggle mechanism form linkage structure just, when driven wheel 3 engages with the first gear 1, toggle mechanism driven shaft 4 drives the tendency and power that toggle mechanism are had driven wheel 3 is allocated to the second gear 2, and final driven wheel 3 departs from the first gear 1, and the driving of the elastic potential energy of the first spring 19 on fork 15 is relied on to be engaged with the second gear 2; Otherwise when driven wheel 3 engages with the second gear 2, toggle mechanism can make driven wheel 3 counter motion.
Shifting fork bar 8 constantly promotes driven wheel 3 by two shifting fork bars 8 and moves left and right along driving shaft 4 in the side-to-side movement process of driving lever 7, change engagement object.
When the structure of chain 13 can ensure swivel nut 11 away from the first gear 1, chain 13 is tauted, and chain 13 adds the total length of chain bar 14 and knee 12; Swivel nut 11 chain 13 when the first gear 1 relaxes, and the end of knee 12 and chain bar 14 is to together with withstanding on, and total length does not now comprise the length of chain 13.
By being flexible coupling of arranging, ensure that swivel nut 11 is in reciprocatory movement, during promotion fork 15, spacing between swivel nut 11 and fork 15 can be produced the change of chain 13 length due to the change of chain 13, so auxiliary driving lever 7 be promoted to change in location and the engagement object transformation of driven wheel 3.
When-driven wheel 3 engages with the first gear 1, fork 15 is partial to the first gear 1 direction, and the first spring 19 is positioned at side, fork 15 offset direction;
When-driven wheel 3 engages with the second gear 2, fork 15 is partial to the second gear 2 direction, and the first spring 19 is positioned at side, fork 15 offset direction.
First spring 19 is in extended state.
When driven wheel 3 engages with the first gear 1, screw rod 10 drives swivel nut 11 away from driven wheel 3, and chain 13 is in tensioned state; When driven wheel 3 engages with the second gear 2, screw rod 10 drives swivel nut 11 near driven wheel 3, and chain 13 is in relaxed state, and chain bar 14 free end and knee 12 free end are to together with withstanding on.When driven wheel 3 engages with the first gear 1, fork 15 offsets towards the first gear 1 side, now fork 15 strained by the first spring 19, swivel nut 11 is driven away from the first gear 1 by screw rod 10, then chain 13 is tauted, and then pull fork 15 to rotate towards the second gear 2 side, when fork 15 crosses vertical state, driven wheel 3 and the first gear 1 depart from, now fork 15 just can pull and support towards the second gear 2 side by the pulling force of the first spring 19, and fork 15 is swung towards the second gear 2 direction, driven wheel 3 presses and engages with the second gear 2 the most at last.
Spacing between two shifting fork bars 8 is greater than the axial length of driven wheel 3, provides heterodromous inertia to cushion can to the motion of driven wheel 3.Spacing between two shifting fork bars 8 is greater than the axial length of driven wheel 3, the length of being longer than driven wheel 3 is the length surpluses of two shifting fork bar 8 spacing relative to driven wheel 3, due to the existence of above-mentioned surplus, fork 15 is when being in vertical state, two shifting fork bars 8 all can not stop by driven wheel 3, only need when fork 15 crosses its vertical state to rely on inertia.
Fork 15 free end both sides are respectively provided with a block 20, and the arranging of block 20 ensures that the lower end of fork 15 can not be departed from and overrun, and also namely fork 15 can not make driving lever 7 moving range excessive.
Driving lever 7 two ends are slidably socketed respectively on each self-corresponding cover block 9, cover block 9 can limit the athletic posture of driving lever 7, the fork 15 that first spring 19 drives can be limited in certain hunting range by block 20 simultaneously, and then the range of movement of driving lever 7 is also defined, ensure the left and right skew that driving lever 7 can not be excessive, only ensure that driven wheel 3 converts the spacing of engagement between the first gear 1 and the second gear 2.
Driven wheel 3 feather key 5 is arranged on driving shaft 4, and namely driven wheel 3 displacement on the feather key 5 of driving shaft 4 be the distance of the first gear 1 and the second gear 2 axis.The structure of feather key 5 can ensure that the clip existed between driven wheel 3 and driving shaft 4 along driving shaft 4 circumference limits on the one hand, ensure that driven wheel 3 circumferentially with driving shaft 4, relative motion can not occur, on the other hand driven wheel 3 can sliding axially along driving shaft 4, ensures that driven wheel 3 moves between the first gear 1 and the second gear 2.
The coaxial connection for transmission gear 6 of first gear 1, travelling gear 6 engages with the second gear 2, and travelling gear 6 is coaxial with the first gear 1, and the second gear 2 engages with travelling gear 6, achieves the reverse rotation of the first gear 1 and the second gear 2.
On shut-down mechanism 22, the end of locking lever 23 is provided with handle, locking lever 23 on shut-down mechanism 22 can pull up by handle 30, be stopped the projection 28 that the right-angle surface 27 in mechanism 22 blocks like this and can depart from constraint, driving lever 7 just can continue to move left and right, only otherwise pulling up mechanism just only can do monocyclic motion.Projection 28 can be blocked in the position of driven wheel 3 just between the first gear 1 and the second gear 2 by the position that shut-down mechanism 22 is arranged, and now driven wheel 3 departs from engagement.
Shut-down mechanism 22 comprises one end with the locking lever 23 of sphenocephaly 25 and a fixed head 30, fixed head 30 overlaps block 9 be connected with one, the sphenocephaly 25 of locking lever 23 stretches out outside fixed head 30 1 faces, outside another face of stretching out fixed head 30 of sheathed second spring 24 of locking lever 23 other end, second spring 24 two ends are separately fixed at fixed head 30 and locking lever 23, and sphenocephaly 25 comprises a lozenges 26 and a right-angle surface 27.
As shown in Figure 1, projection 28 is merely able to the lozenges 26 crossed shut-down mechanism 22 from the left side of shut-down mechanism 22 and reaches the right side of shut-down mechanism 22, but projection 28 right-angle surface 27 of crossing shut-down mechanism 22 can not reach the left side of shut-down mechanism 22 from the right side of shut-down mechanism 22.
Knee 12 is provided with a bolt locking devices 31 in its corner, knee 12 part parallel with driving shaft 4 can be nested in the endoporus of bolt locking devices 31, and within it slide in hole, the bolt on bolt locking devices 31 controls degree of tightness by being screwed into back-out; By regulating knee 12 and the relative position of bolt locking devices 31, the position adjustment of knee 12 pairs of shifting fork bars 8 can be realized, so as to adjust shifting fork bar 8 pairs of driven wheels stir opportunity.
Driving lever 7 is merely able to moving axially along driving lever 7 self under the restriction of cover block 9, but driving lever 7 can not along the axial-rotation of driving lever self in cover block 9, this ensure that the shifting fork bar 8 on driving lever 7 can not turn to, what also ensure that shifting fork bar 8 can toggle it to driven wheel 3 on its movement locus.
Above according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, related personnel in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on description, must determine technical scope according to right.
Claims (10)
1. a lathe back stand mechanism for auto-feed, comprising: support body, and the driving mechanism be arranged on support body and toggle mechanism, driving mechanism and toggle mechanism are connected by shifting fork bar, and described driving mechanism is driven by power set, and described driving mechanism drives drill bit action, it is characterized in that
-described driving mechanism can drive driven wheel to rotate and reverse;
-described toggle mechanism comprises the driving lever sliding and arrange, and described driving lever is arranged two shifting fork bars, two shifting fork bars lay respectively at outside the two ends of driven wheel;
Described driving shaft one end is provided with screw rod, and the swivel nut thread bush connecting knee is connected on described screw rod;
Fork sets gradually the first rotating shaft, the second rotating shaft and the 3rd rotating shaft, fork connects driving lever by the first rotating shaft, and fork is by the second rotating shaft connection chain bar, and fork is rotated by the 3rd rotating shaft; Chain two ends connect the described free end of chain bar and the free end of knee respectively, and the free end of described chain bar and the free end of described knee can to together with withstanding on; One end of first spring is fixedly connected on the fork of the second rotating shaft place, and the first spring other end is fixedly connected on fixed block,
Described driving lever is also provided with projection, and described projection is connected with shut-down mechanism.
2. the lathe back stand mechanism of a kind of auto-feed according to claim 1, it is characterized in that: described driving mechanism comprises first gear and the second gear that can engage with driven wheel respectively, described driven wheel is slidably arranged on driving shaft, and described first gear is contrary with described second gear direction of rotation;
Described first gear coaxial connection for transmission gear, described travelling gear and described second gears meshing.
3. the lathe back stand mechanism of a kind of auto-feed according to claim 2, is characterized in that:
When-described driven wheel and described first gears meshing, the described first gear direction of described fork deflection, described first spring is positioned at side, described fork offset direction;
When-described driven wheel and described second gears meshing, the described second gear direction of described fork deflection, described first spring is positioned at side, described fork offset direction.
4. the lathe back stand mechanism of a kind of auto-feed according to claim 3, is characterized in that: described first spring is in extended state.
5. the lathe back stand mechanism of a kind of auto-feed according to claim 2, is characterized in that:
When-described driven wheel and described first gears meshing, described in described screw drive, swivel nut is away from described driven wheel, and described chain is in tensioned state;
When-described driven wheel and described second gears meshing, described in described screw drive, swivel nut is near driven wheel, and described chain is in relaxed state, and described chain bar free end and described knee free end are to together with withstanding on.
6. the lathe back stand mechanism of a kind of auto-feed according to claim 1, is characterized in that: the spacing described in two between shifting fork bar is greater than the axial length of described driven wheel.
7. the lathe back stand mechanism of a kind of auto-feed according to claim 1, is characterized in that: described fork free end both sides are respectively provided with a block.
8. the lathe back stand mechanism of a kind of auto-feed according to claim 1, is characterized in that: described driving lever two ends are slidably socketed respectively on each self-corresponding cover block.
9. the lathe back stand mechanism of a kind of auto-feed according to claim 2, it is characterized in that: described driven wheel feather key is arranged on described driving shaft, described driven wheel displacement on the feather key of driving shaft be namely described first gear and described second gear shaft to distance.
10. the lathe back stand mechanism of a kind of auto-feed according to claim 1, it is characterized in that: described shut-down mechanism comprises one end with the locking lever of sphenocephaly and a fixed head, the sphenocephaly of described locking lever stretches out outside described fixed head face, outside another face of stretching out described fixed head of sheathed the two the first springs of the described locking lever other end, described the two the first both ends of the spring are separately fixed on described fixed head and locking lever; Described sphenocephaly comprises a lozenges and a right-angle surface.
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| CN201510574839.0A CN105057714B (en) | 2015-09-11 | 2015-09-11 | A kind of lathe back stand mechanism of auto-feed |
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| CN201510574839.0A CN105057714B (en) | 2015-09-11 | 2015-09-11 | A kind of lathe back stand mechanism of auto-feed |
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| CN105057714B CN105057714B (en) | 2017-06-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526496A (en) * | 2016-07-29 | 2018-09-14 | 赵红艳 | It is a kind of with cylinder driving can rigid tapping numerically controlled lathe tailstock autocontrol method |
| CN108526497A (en) * | 2016-07-29 | 2018-09-14 | 赵红艳 | A kind of numerically controlled lathe tailstock autocontrol method |
| CN110756832A (en) * | 2019-11-14 | 2020-02-07 | 上海机床厂有限公司 | Tailstock with two sleeve moving modes of manual operation and motor operation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108526496A (en) * | 2016-07-29 | 2018-09-14 | 赵红艳 | It is a kind of with cylinder driving can rigid tapping numerically controlled lathe tailstock autocontrol method |
| CN108526497A (en) * | 2016-07-29 | 2018-09-14 | 赵红艳 | A kind of numerically controlled lathe tailstock autocontrol method |
| CN110756832A (en) * | 2019-11-14 | 2020-02-07 | 上海机床厂有限公司 | Tailstock with two sleeve moving modes of manual operation and motor operation |
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|---|---|
| CN105057714B (en) | 2017-06-06 |
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