CN2114524U - Cutter control system for thread lathe - Google Patents

Abstract

The utility model relates to a turning tool control mechanism for the threading (screw thread) turning machine, which is composed of a control part of a cutter holder main shaft, a drive part and an eccentric cutter holder. A turning tool on the eccentric cutter holder carries out rotary knife feeding and returning movement by the eccentric shaft of the cutter holder main shaft control part, a ratchet wheel is used for controlling the amount of knife feeding and the turning reciprocation number of times, and the drive part controls the cutting stroke of the turning tool for automatically completing the turning of the screw thread once. The utility model simplifies the actions in the process of cutting and enhances the turning efficiency.

Description

Cutter control system for thread lathe

The utility model is the lathe tool controlling organization of a kind of car tooth (screw thread) machine, formed by three major parts, an i.e. tool spindle control section, one drive part and an eccentric cutter holder part, wherein the tool spindle control section is to be connected with the eccentric cutter holder main shaft with an eccentric shaft, do the feed action of rotating eccentricity displacement with the control lathe tool, and control the depth of cut and the turning number of times that cutter is controlled lathe tool on the tool spindle with a ratchet simultaneously, in addition, drive part is then controlled the feed cutting stroke of lathe tool, then make whole car system process be able to rapidly conveniently once finish, enhance productivity.

General thread cutting, all (number of packages is many as the production facility with lathe (number of packages is few) or car tooth machine for screw rods etc., the working angles of right this type of its lathe tool of facility, it is the vertical time cutter withdrawing of lathe tool, cutting and backhaul about parallel, promptly produce the action back and forth of a rectangle in the plane, the words that this kind working angles is operated with lathe, not only time-consuming, need higher operating technology simultaneously, and if to operate from motor-car tooth machine, though no longer need the operating personnel of high-tech, its actuating length is still time-consuming, and the control of the transmission in mechanism cutting automatically is all extremely complicated, is still a big defective concerning the economic benefit of producing.

The utility model is intended to eliminate above-mentioned all shortcomings, it is the lathe tool controlling organization that a kind of car tooth machine is provided, with the eccentric swing offset of tool spindle feed and tool backlash movement as lathe tool, and with the elastic force of compression spring as the power of lathe tool quick return, then can simplify the working angles of car system thread, enhance productivity.Specifically, the eccentric shaft that the utility model system borrows the tool spindle control section to have is connected with the tool spindle of eccentric cutter holder part, a ratchet that has with controlling organization orders about the lower slide main shaft at drive part and driving screw cam and rotatablely moves up and down again, make the displacement of the lathe tool generation rotating eccentricity that is set up on the tool spindle, just make lathe tool do near and leave the feed tool backlash movement of machined object, simplify whole car system working angles, enhance productivity.

So, main purpose of the present utility model, be eccentric shaft and the ratchet of borrowing the tool spindle control section to have, under the interoperation of drive part and driving screw cam, make the eccentric cutter holder lathe tool that tool spindle set up partly produce the feed tool backlash movement of eccentric swing offset, simplify turning process, improve the speed of the car system of production.

A purpose more of the present utility model is to borrow the ratchet of tool spindle control section, and its end face has the pin hole of several arrangements, cooperates its spinning movement with the grafting of latch, can conveniently promptly adjust car system thread round trip number of times.

Another purpose of the present utility model is the push rod by means of the tool spindle control section, cooperates the startup punching on its tailstock, under the situation that car tooth terminal location is fixed, adjusts the front and back position that starts punching, can control the length of car system thread easily.

Now with regard to structure of the present utility model and effect, conjunction with figs. is described in detail as follows:

At first make eccentric rotation turning principle and do an explanation with regard to the lathe tool on the tool spindle drive tool holder of the present utility model.As shown in Figure 1, A is a machined object, B is a tool spindle, C is the eccentric shaft pivot, tool spindle B connects with eccentric shaft C is eccentric, so when eccentric shaft C is rotated counterclockwise, the lathe tool D that promptly orders about on the tool spindle B drive knife rest leaves machined object A, on the contrary when it turns clockwise, promptly order about tool spindle by the position of B toward B ', and drive lathe tool D to machined object A feed cutting, and reach required cutting depth, the feed number of times in the middle of this and each depth of cut all can be adjusted (holding the back narration) by the tool spindle control section.Lathe tool need not remake the vertical feed tool backlash movement, saves the time of whole thread cutting stroke, improves turning efficient.

Fig. 2 is a lathe tool controlling organization exploded perspective schematic diagram

Fig. 3 is a tool spindle control section exploded perspective schematic diagram, it is the grafting tool spindle that its body ［ 1 ］ is gone up center through hole ［ 11 ］, upper limb through hole ［ 12 ］ is then in order to grafting eccentric shaft ［ 13 ］, one excentric sleeve ［ 131 ］ is arranged on the eccentric shaft ［ 13 ］, be coupling on the excentric sleeve cam ［ 14 ］, a spring ［ 15 ］ and an external tooth ratchet ［ 16 ］, other has and has contact with push rod ［ 17 ］, ［ 18 ］ hook on the ratchet ［ 161 ］ of the chase ［ 141 ］ of cam and ratchet.Moreover its body ［ 1 ］ lower edge is plugged with a hook pin ［ 19 ］ and a guide screw watt ［ 191 ］.

Eccentric pivot pin ［ 132 ］, coupling block ［ 133 ］ by eccentric shaft ［ 13 ］ tail end connect (as shown in Figure 4) with tool spindle ［ 2 ］, the clamping bar ［ 21 ］ of eccentric cutter holder part, then when rotating, eccentric shaft ［ 13 ］ can drive off-centre rotation feed or tool backlash movement that tool spindle ［ 2 ］ produces angular displacement, and be provided with a spring ［ 22 ］ and a push rod ［ 23 ］ in its main shaft ［ 2 ］, make lathe tool that tool spindle ［ 2 ］ drives front end at the end, do the action of backhaul rapidly by the elastic force of spring at the turning stroke.

As shown in Figure 5, the body of drive part ［ 3 ］ is positioned at edge within the main shaft control body ［ 1 ］, and be coupling on body ［ 3 ］ by through hole ［ 31 ］ and tool spindle ［ 2 ］, body ［ 3 ］ has a main hook ［ 32 ］ respectively, one push rod ［ 33 ］ and a spring ［ 34 ］, hook by main hook ［ 32 ］ on the hook pin ［ 19 ］ of main shaft control body lower edge, push rod ［ 33 ］ then hasp in ratchet ［ 16 ］ and have contact with push rod ［ 18 ］ upper limb, spring ［ 34 ］ is promptly controlled the lower edge inboard of body ［ 1 ］ in main shaft with its leading edge pushing tow, so, when main hook ［ 32 ］ gets loose hook pin ［ 19 ］, the elastic force of spring ［ 34 ］ can move down turn by the whole lathe tool controlling organization of pushing tow, causes the guide screw watt ［ 191 ］ and driving screw ［ 4 ］ engaged transmission (as shown in Figure 2) of main shaft control body lower edge.Turn with driving screw ［ 4 ］, promptly drive the stock removal action of the lathe tool do reach on the tool spindle ［ 2 ］, aforesaid whole cutting stroke, system is started by a pressing plate ［ 5 ］ on the body, press downwards and have contact with push rod ［ 17 ］ and ［ 18 ］, push rod ［ 17 ］ is upwards promoted, make cam ［ 14 ］ produce anticlockwise turn, and have contact with the ratchet ［ 161 ］ that ［ 18 ］ also upwards break away from ratchet ［ 16 ］, go back the push rod ［ 33 ］ of its upper limb drive division branch of pushing tow simultaneously, make it also to break away from ratchet ［ 16 ］, then ratchet ［ 16 ］ promptly borrows the elastic force of helical spring ［ 15 ］ to produce anticlockwise rotation, push up till one of the groove ［ 140 ］ of cam ［ 14 ］ side ［ 140a ］ until the latch ［ 163 ］ of being pegged graft on several pin-and-holes ［ 162 ］ that the ratchet end face is had, and being rotated counterclockwise of mat cam ［ 14 ］, make it lean on tail end side ［ 142 ］ one of originally to be embedded in its shallow slot (not indicating among the figure) to write off ［ 143 ］ running transform and be embedded in another wire casing (also not indicating among the figure), even also this abatement ［ 143 ］ produces promotion impulse force backward and promotes on the tail seat set one upper end ［ 61 ］ that starts punching ［ 6 ］, then promote the ejector pin ［ 321 ］ of drive part main hook ［ 32 ］ forward by its lower end ［ 62 ］, the tail end of pushing tow main hook ［ 32 ］, to making get loose hook pin ［ 19 ］ on the tool spindle control section of main hook ［ 32 ］, then the elastic force dolly cutter mechanism rotation by spring ［ 34 ］ moves down, guide screw watt ［ 191 ］ and driving screw ［ 4 ］ engaged transmission by the tool spindle control section, promptly drive lathe tool that whole lathe tool mechanism sets up tool spindle ［ 2 ］ and do the action of cutting, compress spring ［ 22 ］ in the tool spindle ［ 2 ］ simultaneously and treat that the turning stroke reaches home, the cam ［ 41 ］ of mat driving screw ［ 4 ］ front end cooperates with guide screw watt ［ 191 ］ front end roller bearing ［ 192 ］, whole lathe tool mechanism pushing tow is left driving screw ［ 4 ］, compress spring ［ 34 ］ simultaneously, make main hook ［ 32 ］ firm with hook pin ［ 19 ］ snapping again, then whole lathe tool mechanism suspended state, the elastic force that is compressed spring ［ 22 ］ in the mat tool spindle ［ 2 ］ makes lathe tool mechanism produce the action of backhaul rapidly, treat that backhaul when writing off ［ 143 ］ pushing tow is to the upper end ［ 61 ］ of startup punching ［ 6 ］ again, then is again the beginning of next cutting stroke.As for the feed of tool spindle ［ 2 ］ and the interoperation of withdrawing, when cutting just by latch ［ 163 ］ position on ratchet ［ 16 ］ end face, can appropriateness adjust with the angle that cooperates ratchet ［ 16 ］ to be rotated counterclockwise of position, cam ［ 14 ］ groove side ［ 140a ］, making eccentric shaft ［ 13 ］ drive tool spindle ［ 2 ］ and arrive the position (as the position of B among Fig. 1) of ingressing, is the action of cutting stroke for the first time with that.Upwards (counterclockwise) thrusting action of mat driving screw cam ［ 41 ］ makes the lathe tool of main shaft ［ 2 ］ behind the knife rest leave the action of working substance as withdrawing when reaching home.Meanwhile, promptly be back to the origin-location because of starting pressing plate ［ 5 ］, have contact with push rod ［ 17 ］, ［ 18 ］ and push rod ［ 33 ］ all spring ［ 171 ］ of its socket of mat separately and ［ 331 ］ return, push rod ［ 17 ］ hook is in chase ［ 141 ］, make the position of cam ［ 14 ］ keep firm, having contact with ［ 18 ］ makes ratchet ［ 16 ］ only can do clockwise unidirectional turn, push rod ［ 33 ］ is the upwards thrusting action of mat driving screw cam ［ 41 ］ then, with the also forward push-jump angle of ratchet ［ 16 ］, make eccentric shaft ［ 13 ］ drive the depth of cut that tool spindle ［ 2 ］ produces an eccentric swing offset.In other words, promptly when driving screw cam ［ 41 ］ orders about lathe tool mechanism and makes tool backlash movement, push rod ［ 33 ］ mat gesture promotion ratchet ［ 16 ］ forward rotates and makes tool spindle ［ 2 ］ that the depth of cut of an off-centre be arranged, this is the depth of cut that lathe tool mechanism cuts for the second time after backhaul, so motion that repeats, ratchet ［ 16 ］ is forward rotation in turn, the lathe tool that drives tool spindle ［ 2 ］ in turn progressive cutting (depth of cut successively by general car thread there is no too big variation, can be by ratchet ［ 16 ］, the anglec of rotation of ratchet ［ 161 ］ is set feed successively in advance), reach required cutting depth.And when ratchet end face pin-and-hole ［ 162 ］ latch ［ 163 ］ upward, at the opposite side ［ 140b ］ that goes to cam groove ［ 140 ］ with ratchet ［ 16 ］ dextrorotation, and actuating cam ［ 14 ］ dextrorotation goes to the abatement ［ 143 ］ that makes in the shallow slot of side when being retracted into the deep trouth position, its backhaul just again pushing tow start punching ［ 6 ］, thereby stock removal action is stopped, finishing the work of thread cutting.

Can adjust the number of times of control car tooth by the latch ［ 163 ］ on ratchet ［ 16 ］ end face, when in cam groove ［ 140 ］, the spacing that latch is ［ 163 ］ two is bigger, the number of times of cutting is then little, the spacing little cutting number of times of healing promptly increases thereupon on the contrary, if a latch, then Qie Xiao number of times maximum are only arranged.

The setting of startup punching ［ 6 ］ as shown in Figure 6, its position is adjusted before and after can being done by the turn of screw rod ［ 63 ］, the position of cutting terminal point is fixing by driving screw cam ［ 41 ］ control, start the position of punching ［ 6 ］ if adjust backward, then can increase backhaul distance, promptly increase the length of screw cutting, otherwise adjust the length that then reduces the car tooth forward, operate extremely easy.

In sum, structure of the present utility model and effect, be so that the whole cutting stroke of car tooth machine is simplified for it, improve cutting production efficiency, be convenient to the adjustment of car tooth number of times and car dental length simultaneously, can adapt to the turning of all size thread, have good efficacy.

Description of drawings:

The eccentric rotation of Fig. 1 turning action schematic diagram

Fig. 2 lathe tool controlling organization exploded perspective schematic diagram

Fig. 3 tool spindle control section exploded perspective schematic diagram

Fig. 4 eccentric cutter holder part exploded perspective schematic diagram

Fig. 5 drive part exploded perspective schematic diagram

Fig. 6 starts punching exploded perspective schematic diagram

Claims (3)

1, the lathe tool controlling organization of a kind of car tooth (screw thread) machine, system is by a tool spindle control section, an one eccentric cutter holder part and a drive part constitute, the tool spindle of interspersed eccentric cutter holder part in the body center through hole of tool spindle control section, grafting one eccentric shaft in the upper limb through hole, contiguous block on the one eccentric pivot pin of its tail end of nationality connects with a clamping bar of tool spindle, then be coupling on its a front end axle sleeve ratchet, a spring and has the cam of two chases, one groove, and has respectively at ratchet and cam upper limb and to have contact with and a push rod.In addition, peg graft a hook pin and a guide screw watt of body lower edge.The body of drive division branch is set at its body inner edge again, it also is coupling by body through-holes and tool spindle, and include a main hook, one push rod and a spring, hook pin snapping by main hook and tool spindle control body lower edge, and spring also is compressed pushing tow in its lower edge position, push rod then is positioned at outside the ratchet lateral margin and has contact with upper limb, then by the startup that presses down of a pressing plate on the body, tool spindle control section eccentric pivoted cams is promoted rotation by push rod, make its abatement of leaning on tail end side deep trouth to be embedded be transferred to the position of shallow slot, and generation thrusting action backward, promote the startup punching upper end on the body tailstock, make its lower end promote the main hook ejector pin of drive part again, the hook pin of main hook and snapping is broken away from, makes the driving screw engaged transmission of tool spindle control section lower edge do stock removal action by spring push, again by the driving screw cam when the cutting terminal point, cooperate by the roller bearing of guide screw watt front end, boost whole lathe tool mechanism and make tool backlash movement.Simultaneously a push rod that has in the nationality tool spindle and when cutting compressed spring force do the action of backhaul rapidly, the car system stroke of thread is simplified rapidly for it, enhance productivity.

2, lathe tool controlling organization according to the described car tooth of claim 1 (screw thread) machine, it is characterized in that the ratchet that is coupling on the eccentric shaft of tool spindle control part branch, have several pin-and-holes on its end face, but the latch position of nationality pin-and-hole cooperates the cam groove position, adjustment drives eccentric shaft by the spring driving pawl and rotates, make the tool spindle lathe tool arrive cutting position just, and the push rod of having contact with of cooperating that the ratchet upper limb had respectively and drive part, with the kinetic potential of revolving withdrawing and bottom driving in the lathe tool mechanism, can order about the tool spindle lathe tool that ratchet drives eccentric shaft motion successively has a depth of cut, but and then nationality with controlled required suitable cutting depth and cutting number of times.

3, according to the lathe tool controlling organization of the described car tooth of claim 1 (screw thread) machine, it is characterized in that starting punching is supported firm by a screw bracket bearing, but the punching front-back direction is adjusted in the turn of nationality screw rod, the length of cut of screw thread just can be determined in the position that cooperates driving screw cam cutting terminal point.

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