CN203330429U

CN203330429U - Servo feed drilling power head structure

Info

Publication number: CN203330429U
Application number: CN2013203827267U
Authority: CN
Inventors: 徐冠平; 赵苗; 龚喜; 殷东敏
Original assignee: SUGINO CHANGSHU CO Ltd
Current assignee: SUGINO CHANGSHU CO Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2013-12-11
Anticipated expiration: 2023-06-28

Abstract

The utility model relates to a servo feed drilling power head structure and belongs to the technical field of drilling tools. The servo feed drilling power head structure comprises a transmission case fixing base, a transmission case, a spline shaft, a spline shaft driving mechanism and a workpiece drilling mechanism. The servo feed drilling power head structure is characterized in that the servo feed drilling power head structure further comprises a servo feed control mechanism which is used for driving the workpiece drilling mechanism to travel upwards or downwards, wherein the servo feed control mechanism is arranged on the transmission case and is connected with the workpiece drilling mechanism. The servo feed drilling power head structure has the advantages that auxiliary facilities for providing compressed air are removed, the drilling quality of workpieces can be ensured, and drilling cutters can also be protected effectively, and the servo feed drilling power head structure has the advantages of being small in noise, capable of improving the environment of a working place remarkably and needless for artificial cumbersome adjustment and has excellent automated control effects.

Description

Servo feed drill unit structure

Technical field

The utility model belongs to the drilling tool technical field, is specifically related to a kind of servo feed drill unit structure, supporting on drilling hole machine tool or similar equipment, and metal works is processed to required hole.

Background technology

Technical information about drill unit can be seen in disclosed Chinese patent literature, " Pneumatic high-power drill unit " typically recommended as application for a patent for invention publication No. CN101797652A, the technical essential of this patent scheme is that cylinder is installed at the middle part of the length direction (also can claim short transverse) at hollow piston rod, and the cylinder piston of cylinder is connected with hollow piston rod, specifically can be referring to the 0004th section, the specification of this patent application.Again, " Pneumoelectric drilling head " that Granted publication CN202270999U introduces, the technical essential of this patent scheme is that cylinder is installed at the middle part of hollow piston rod equally, and the cylinder piston of cylinder is connected with hollow piston rod, specifically can be referring to the 1st page the 0005th section, the specification of this patent.Whether the latter aside from these two patent schemes is aforesaid reprint, but its common characteristics all belong to pneumatic type drill unit category, so-called pneumatic type drill unit refers to that the displacement of hollow piston rod controlled by cylinder piston rod, that is to say by pneumatic control processing stroke (advance or retreat).One of shortcoming of pneumatic feeding drilling power head structure, due to the power source that uses compressed air as piston rod movement, thereby for example device of air compressor or air pump and so on of compressed air source unit must be provided, cause pneumatic feeding drill unit only just to be able to work relying under the state that auxiliary equipment is air compressor machine etc.; Two, because the processing stroke for example advances, be by pneumatic realization, therefore pace must be regulated by hydraulic damper, yet the non-linear meeting of the unstability of gas and hydraulic damping causes the unstable of drilling process, not only easily affect the drilling precision, and can undermine the service life of drilling tool as drill bit (cutter); Three, realize because needs rely on the collision of hydraulic damper the switching that F.F. and work are advanced, thereby the noise added while being drilling man-hour is larger, especially when production scene is equipped with many bench drills to cut unit head, noise is larger, thereby affects the environment (noise pollution) of operation field; They are four years old, owing to being difficult to accomplish the accuracy controlling to stroke (F.F. stroke and work are carried out journey) in process even at all, therefore must be by loaded down with trivial details and complicated machinery adjustment, and this loaded down with trivial details and complicated machinery adjustment affects operating efficiency on the one hand, increase on the other hand operator's working strength, especially machinery adjustment is carried out with manual mode by the operator, and the precision that manual mode is adjusted is relevant due to the experience to the operator, sense of responsibility and mood, the precision effect of therefore adjusting objectively is difficult to ensure; Its five, due to control model limitation, thereby be difficult to be controlled by programmable controller (PLC).

In view of above-mentioned prior art, be necessary rational modification in addition, the applicant has done positive and useful design for this reason, finally formed technical scheme described below, and taking to have carried out contrast test in the applicant plant area and pneumatic type drill unit structure under secrecy provision, result has shockingly shown good technique effect.

Summary of the invention

Task of the present utility model be to provide a kind of contribute to abandon using compressed air and use as power source and break away from the auxiliary equipment relied on such as air compressor, be conducive to embody good drilling precision and protection cutter and use the drilling quality that ensures drilled turning work piece and the service life that extends cutter, be of value to noise decrease and use the noise pollution of avoiding the operation place, have and be convenient to avoid being subject to artificially to adjust the impact of factor and use the accurate control of guaranteeing stroke and have and be good at realizing that PLC controls and uses the servo feed drill unit structure that embodies good automation effect.

Task of the present utility model completes like this, a kind of servo feed drill unit structure, comprise the transmission case holder, be fixed on the top of transmission case holder and the transmission case that formation has the transmission case chamber, with vertical cantilever position pivotable be arranged on transmission case and be insinuated into the splined shaft in the transmission case chamber, be arranged on transmission case and splined shaft driving mechanism that be in transmission connection with splined shaft in the transmission case chamber and with splined shaft, be connected for the workpiece drilling sector to the workpiece drilling, be characterised in that and also include one for ordering about the servo feed controlling organization of described workpiece drilling sector upstream or downstream, this servo feed controlling organization is arranged on described transmission case, and with the workpiece drilling sector, be connected on described transmission case holder.

In a specific embodiment of the present utility model, form a splined shaft block bearing chamber is arranged in the bottom of described transmission case and in the position corresponding to described splined shaft, be provided with one first splined shaft block bearing and one second splined shaft block bearing in this splined shaft block bearing chamber, this is first years old, self correspondence of the second splined shaft block bearing, the upper end of described splined shaft is bearing on the first splined shaft block bearing and the second splined shaft block bearing rotationally, and after leaning out the first splined shaft block bearing, be stretched in described transmission case chamber, and the lower end of splined shaft is arranged with a splined shaft slip cap slidably, described transmission case holder has a holder top board and a holder base plate, be fixed with a guide pillar between this holder top board and holder base plate, described servo feed controlling organization and guide pillar are slidably matched, and this servo feed controlling organization also is connected with described slip cap, and slip cap and described holder base plate are slidably matched, and be connected with described workpiece drilling sector, be provided with at the top of described transmission case for described splined shaft driving mechanism and described servo feed controlling organization and cover the case lid protected.

In another specific embodiment of the present utility model, described splined shaft driving mechanism comprises motor, first, second drive and the first driving-belt, motor is fixed on the bottom of described transmission case, the motor shaft of this motor is in the bottom of transmission case is stretched over described transmission case chamber, the first drive is positioned at the transmission case chamber and fixes with motor shaft, the second drive is positioned at the transmission case chamber, and be fixed on the described upper end of described splined shaft, one end of the first driving-belt is nested with on the first drive, and the other end is nested with on the second drive.

In another specific embodiment of the present utility model, described first, second drive is synchronous pulley, and described the first driving-belt is Timing Belt.

In another specific embodiment of the present utility model, be extended with an outer tube connector on the described holder base plate of described transmission case holder and towards a side of described workpiece drilling sector, this outer tube connector is corresponding with described splined shaft slip cap, and connect the upper end of an outer tube with the vertical cantilever state on this outer tube connector, and the lower end of outer tube is connected with an outer tube sliding seat, described splined shaft slip cap is in the overcoat tube chamber through being stretched over outer tube after the outer tube connector and expand and be provided with a slip cap Connection Block, described workpiece drilling sector is in transmission connection with the described lower end of described splined shaft in casing cavity outside, and be slidably matched with described outer tube sliding seat, be fixed with a contiguous block on described holder base plate, be fixedly connected with a lead screw shaft bearing on this contiguous block, this lead screw shaft bearing is corresponding with described servo feed controlling organization, be provided with at least one case lid fixed bolt in the transmission case chamber of described transmission case, the middle part of the length direction of described case lid and case lid fixed bolt are fixed, it is vertically parallel that described guide pillar and described splined shaft keep.

Also has a specific embodiment of the present utility model, described servo feed controlling organization comprises servomotor, the 3rd, the 4th drive, the second driving-belt, the leading screw ball nut mount, sliding shoe, leading screw, first signal collector and secondary signal collector, servomotor is fixed on the bottom of described transmission case, the servo motor shaft of this servomotor is in the bottom of transmission case is stretched over described transmission case chamber, the 3rd drive is positioned at the transmission case chamber and is fixed on servo motor shaft, the leading screw ball nut mount is arranged on an end of sliding shoe, the middle part of sliding shoe is nested with slidably on described guide pillar, the other end of sliding shoe is nested with on described splined shaft slip cap and with the splined shaft slip cap and fixes, the upper end of leading screw is bearing in rotationally on transmission case by the leading screw upper bearing (metal) and is insinuated in the transmission case chamber, the middle part of leading screw and leading screw ball nut mount are rotatably assorted, and the lower end of leading screw is bearing on described lead screw shaft bearing rotationally by the leading screw lower bearing, the 4th drive is positioned at the transmission case chamber and is fixed on the described upper end of leading screw, one end of the second driving-belt is nested with on the 3rd drive, the other end is nested with on the 4th drive, the first signal collector is fixed on the bottom of transmission case, and corresponding with described sliding shoe, the secondary signal collector is fixed on described contiguous block in the position corresponding to the first signal collector, and same corresponding with sliding shoe.

More of the present utility model and, in specific embodiment, described the 3rd drive and the 4th drive are synchronous pulley, described the second driving-belt is Timing Belt.

In of the present utility model and then specific embodiment, described first signal collector and secondary signal collector are travel switch, microswitch, position approach switch, tongue tube or hall sensing element.

Of the present utility model again more and in specific embodiment, described workpiece drilling sector comprises inner sleeve, the splined shaft sleeve pipe that is in transmission connection, the inner sleeve Connection Block, sealing ring, seal cartridge and bearing chuck, inner sleeve and described outer tube sliding seat are slidably matched, and the upper end of this inner sleeve is connected with the outer wall thread of described slip cap Connection Block, and the lower end of inner sleeve is connected with the outer wall thread of inner sleeve Connection Block, the described lower end of the upper end of splined shaft joint sleeve and described splined shaft is in transmission connection, and form the splined shaft chamber of stepping down is arranged in the be in transmission connection upper end of sleeve pipe of this splined shaft, splined shaft is in transmission connection, and to be stretched over seal cartridge outer and form and have a drilling cutters to clamp head for the lower end of sleeve pipe, this drilling cutters clamps the head formation has a drilling cutters that taper hole is installed, the inner sleeve Connection Block is in transmission connection between sleeve pipe and inner sleeve at splined shaft, and be slidably matched with the splined shaft sleeve pipe that is in transmission connection, sealing ring matches with the inner sleeve Connection Block and is fixedly connected with inner sleeve, seal cartridge matches with sealing ring below corresponding to sealing ring, and clamping head with described drilling cutters is fixedly connected with, the bearing chuck is in transmission connection between sleeve pipe and inner sleeve at splined shaft, be provided with a upper bearing (metal) between the lower end surface of the upper end of this bearing chuck end face and described slip cap Connection Block, and be provided with lower bearing between the upper end end face of the lower end surface of bearing chuck and described inner sleeve Connection Block, be in transmission connection upper end and the upper bearing (metal) of sleeve pipe of splined shaft is rotatably assorted, and lower end and lower bearing are rotatably assorted.

In again of the present utility model and then specific embodiment, be embedded with a sliding seat sealing ring on the inwall of described outer tube sliding seat, the be in transmission connection outer wall of sleeve pipe of this sliding seat sealing ring and described splined shaft is sealed and matched; Described drilling cutters clamp the head outer wall on be provided with one first sealing ring and one second sealing ring, wherein: the first sealing ring is corresponding between described inner sleeve Connection Block and sealing ring, and the second sealing ring coordinates with the inner wall sealing of seal cartridge.

The technical scheme that the utility model provides has following technique effect with respect to prior art, and one owing to having adopted the servo feed controlling organization, thereby has been abandoned and usingd compressed air as power source, has saved compressed-air actuated auxiliary equipment is provided; Its two, accurately control because the servo feed controlling organization can carry out journey to F.F. stroke and work, thereby not only can ensure the drilling quality to workpiece, and can effectively protect drilling cutters; Its three, because the servo feed controlling organization has the strong point that noise is little with respect to usining compressed air for the feed mechanism of power source, thereby can significantly improve the environment of workplace; Its four, because the servo feed controlling organization can automatically accurately be controlled the stroke of workpiece drilling sector, thereby without artificial loaded down with trivial details adjustment; Its five, due to can with the Programmable Controller control connection, thereby there is excellent automation and control effect.

The accompanying drawing explanation

Fig. 1 is example structure figure of the present utility model.

The cutaway view that Fig. 2 is Fig. 1.

The specific embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but the description to embodiment is not all the restriction to the utility model scheme, any according to the utility model design, done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.

Refer to Fig. 1 and Fig. 2, provided a transmission case holder 1, the location status of current icon of take is example (as follows), the top of this transmission case holder 1 forms a holder top board 11, and bottom forms a holder base plate 12 is arranged, be fixedly connected with a contiguous block 121 and be connected with a lead screw shaft bearing 122 at the end of this contiguous block 121 by lead screw shaft bearing hold-down screw 1221 on holder base plate 12.The applicant it should be noted that: directly by lead screw shaft bearing hold-down screw 1221, that lead screw shaft bearing 122 is fixing with holder base plate 12 if abandon contiguous block 121, and should be considered as equivalent substitution so and still belong to the disclosed technology contents category of the utility model.Again, between aforesaid holder top, base plate 11,12 and the cavity 16 that is positioned at transmission case holder 1 be fixed with preferably rounded guide pillar 13 of a shape of cross section.And, be fixed with an outer tube connector 14 at holder base plate 12 back to a side of holder top board 11, form outer tube connector external screw thread is arranged on the outer wall of this outer tube connector 14, the upper end of an outer tube 141 is threaded on this outer tube connector external screw thread, and the lower end of outer tube 141 is the vertical cantilever state, and the mode connected with screw thread has connected an outer tube sliding seat 1411, be embedded with a sliding seat sealing ring 14111 on the inwall of this outer tube sliding seat 1411, the overcoat tube chamber 1412 of outer tube 141 coordinates for the following workpiece drilling sector that also will describe in detail 5.

Preferably, in order to ensure safety and to embody good sight effect, the utility model is fixed a guard shield 15 in the periphery of transmission case holder 1 by guard shield hold-down screw 151, specifically: guard shield hold-down screw 151 is screwed in and defaults in the guard shield fixing screw hole 17 on transmission case holder 1.

Provided a transmission case 2, this transmission case 2 forms a transmission case chamber 21, and this transmission case 2 both can be as fixing as the holder top board 11 of screw and aforesaid transmission case holder 1 by securing member, also can be fixing by the holder top board 11 of welding manner and transmission case holder 1, the present embodiment is selected the former.In transmission case chamber 21 and the middle position that is preferably placed at the length direction in transmission case chamber 21 form to have and a pair ofly (but be not limited to a pair of, for example can be also one) case lid fixed bolt 211, offer on the distal end faces of case lid fixed bolt 211 and cover fixing screw hole 2111, the case lid 23 of illustrating in figure shows by case lid hold-down screw 231(Fig. 2) fixing with case lid fixing screw hole 2111, cover and protect by 23 pairs of transmission case chambeies 21 of this case lid.In the bottom of transmission case 2 and offering corresponding to the following position that is about to the splined shaft 3 described or claiming to be processed with a splined shaft block bearing chamber 22, for fear of splined shaft 3 is produced and interferes, therefore on the holder top board 11 of aforementioned transmission case holder 1 and offering a splined shaft resigning hole 111 corresponding to 22 position, splined shaft block bearing chamber.Be provided with one first splined shaft block bearing 221 and one second splined shaft block bearing 222 in aforesaid splined shaft block bearing chamber 22, this first, second splined shaft block bearing 221,222 keeps upper and lower corresponding relation each other.For first, second splined shaft block bearing 221,222 is limited, therefore be provided with a bearing clamping ring 223 and a bearing snap ring 224 in splined shaft block bearing chamber 22, wherein: bearing clamping ring 223 is between first, second splined shaft block bearing 221,222, and bearing snap ring 224 is corresponding to the below of the second splined shaft block bearing 222.

A splined shaft 3 of having mentioned above having provided, the upper end of this splined shaft 3 is the smooth section without spline, lower end forms has spline 32(to belong to common practise), the upper end of splined shaft 3 is rotatably assorted and probes in aforesaid transmission case chamber 21 at step down corresponding to aforementioned splined shaft 111 position, chamber and aforesaid the second, first splined shaft block bearing 222,221.As shown in Figure 1, form a splined shaft flat key 33 is arranged in the upper end of splined shaft 3, and offer a drive restriction screw hole 34 at the middle position of upper end end face, limit on screw hole 34 and be equipped with one first platen 341 at this drive, it is fixing that this first platen 341 limits screw hole 34 by the first platen screw 3411 and drive.The lower end of splined shaft 3 is in transit through aforementioned cavity 16 and stretching through the direction towards the overcoat tube chamber 1412 of outer tube 141 after holder base plate 12, and be arranged with a splined shaft slip cap 31, the upper end of splined shaft slip cap 31 is connected with the following servo feed controlling organization 6 that also will describe in detail, and the expansion of the lower end of splined shaft slip cap 31 is provided with a slip cap Connection Block 311, this slip cap Connection Block 311 is positioned at overcoat tube chamber 1412, and is connected with the following workpiece drilling sector 5 that also will describe.Shown in figure, the position of matching with holder base plate 12 at splined shaft slip cap 31 is provided with a slip guiding sleeve 312.

Preferably, in the lower end of aforesaid splined shaft slip cap 31 and corresponding to position empty set one bumper ring 35 above slip cap Connection Block 311, or this bumper ring 35 is embedded in to aforementioned outer tube connector 14 on the end face of an end of slip cap Connection Block 311.

Provided one for ordering about the splined shaft driving mechanism 4 of aforesaid splined shaft 3 rotations, this splined shaft driving mechanism 4 preferably but not the structure definitely be limited to is as follows: comprise motor 41, first, the second drive 42, the 43 and first driving-belt 44, motor 41 is fixed on the bottom of transmission case 2 by one group of motor hold-down screw 412, with transmission case 2, back to a side in transmission case chamber 21, fix, the motor shaft 411 of this motor 41 is in the bottom of transmission case 2 is stretched over transmission case chamber 21, and form a motor shaft flat key 4111 is arranged on this motor shaft 411, and offer the first stop screw hole 4112 on the distal end faces of motor shaft 41, the first drive 42 is positioned at transmission case chamber 21, and be nested with on motor shaft 411, more particularly, fixing with the aforementioned electric arbor flat key 4111 on motor shaft 411.In order to prevent that the first drive 42 from escaping in motor shaft 411, therefore by one second platen 421, be limited, specifically: by the second platen screw 4211, the second platen 421 and the first stop screw hole 4112 are fixed.The second drive 43 is positioned at transmission case chamber 21, and is nested with in the upper end of aforementioned splined shaft 3, more particularly fixing with aforesaid splined shaft flat key 33, and is limited by aforesaid the first platen 341, to prevent this second drive 43, escapes in splined shaft 3.One end of the first driving-belt 44 is nested with on the first drive 42, and the other end of the first driving-belt 44 is nested with on the second drive 43.

As preferred scheme, aforesaid the first drive 42 and the second drive 43 are all used synchronous pulley, and correspondingly, aforesaid the first driving-belt 44 is used Timing Belt.Yet, if for the purpose of evading the disclosed technology contents of the utility model, first, second drive 42,43 is used instead to common driving pulley and even is used sprocket wheel instead, the first driving-belt 44 used instead to common driving belt and even used driving chain instead simultaneously, so certainly still belonging to the disclosed technology contents category of the utility model.

Please continue to see Fig. 1 and Fig. 2, the technical essential of the technical scheme provided as the utility model, adopted a servo feed controlling organization 6, by this servo feed controlling organization 6, ensured that the F.F. stroke (also can claim idle stroke) of workpiece drilling sectors 5 and work carry out journey when drilling (stroke) during workpiece.

Aforementioned servo feed controlling organization 6 preferably but not the structure definitely be limited to is as follows: comprise the servomotor 61 with rotating function, the 3rd, the

4th drive

62, 63, the second driving-belt 64, leading screw ball nut mount 65, sliding shoe 66, leading screw 67, first signal collector 68 and secondary signal collector 69, servomotor 61 is fixed on the bottom of described transmission case 2 by one group of servomotor hold-down screw 612, with transmission case 2, back to a side in transmission case chamber 21, fix, the servo motor shaft 611 of this servomotor 61 is in the bottom of transmission case 2 is stretched over described transmission case chamber 21, there is equally servo motor shaft flat key (not shown) on this servo motor shaft 611, and the middle position in the distal end faces of servo motor shaft 611 offers the second stop screw hole 6111, the 3rd drive 62 is positioned at transmission case chamber 21, and fixing with servo motor shaft 611, in order to prevent the 3rd drive 62, escape in servo motor shaft 611, therefore be equipped with one the 3rd platen 621, by the 3rd platen stop screw 6211, the 3rd platen 621 is defined on the second stop screw hole 6111, play the restriction effect to the 3rd drive 62 by the 3rd platen 621.Leading screw ball nut mount 65 is arranged on an end of sliding shoe 66, and cover and protect by nut flap 651, the middle part of sliding shoe 66 adds sliding sleeve 661 and is nested with slidably on described guide pillar 13, the other end of sliding shoe 66 is nested with on aforementioned splined shaft slip cap 31, and be fixedly connected with splined shaft slip cap 31 by slip cap hold-down screw 662, drive the corresponding movement of splined shaft slip cap 31 by the upper and lower displacement of sliding shoe 66, the upper end of leading screw 67 is bearing in rotationally on transmission case 2 and is insinuated in transmission case chamber 21 by a pair of stacked leading screw upper bearing (metal) 671.Shown in figure, in the bottom of aforesaid transmission case 2 and offer a leading screw upper bearing (metal) chamber 24 in the position corresponding to leading screw upper bearing (metal) 671, a pair of leading screw upper bearing (metal) 671 is arranged in this leading screw upper bearing (metal) chamber 24, and above leading screw upper bearing (metal) 671, adopt bearing cap 6711 to limit, specifically adopt one group of bearing cap hold-down screw 67111 that bearing cap 6711 and the bottom of transmission case 2 are fixed.The bottom in leading screw upper bearing (metal) chamber 24 be provided with one for and leading screw 67 between form the leading screw sealing ring 241 of sealing.The middle part of leading screw 67 and leading screw ball nut mount 65 are rotatably assorted, and the lower end of leading screw 67 is bearing on aforesaid lead screw shaft bearing 122 rotationally by leading screw lower bearing 672.The 4th drive 63 is positioned at transmission case chamber 21 and is fixed on the aforementioned upper end of leading screw 67.In order to prevent that the 4th drive 63 from escaping in the upper end of leading screw 67, therefore be equipped with one the 4th platen 631, limit screw 6311 by the 4th platen the 4th platen 631 is defined on the screw 673 on the upper end end face that is opened in leading screw 67.One end of the second driving-belt 64 is nested with on the 3rd drive 62, the other end is nested with on the 4th drive 63, first signal collector 68 is fixed on the bottom of transmission case 2, and corresponding with described sliding shoe 66, secondary signal collector 69 is fixed on described contiguous block 121 in the position corresponding to first signal collector 68, and same corresponding with sliding shoe 66.

For the selection of the 3rd, the

4th drive

62,63 and the second driving-belt 64 as the description to first, second drive 42,43 and the first driving-belt 44, that is to say in the present embodiment, the 3rd drive 62 and the 4th drive 63 are synchronous pulley, and described the second driving-belt 64 is Timing Belt.

Aforesaid first signal collector 68 and secondary signal collector 69 are all selected and are used travel switch, but, if use microswitch, position approach switch, tongue tube and even hall sensing element instead, should be considered as so not breaking away from technology contents category of the present utility model.

In order to ensure that sliding shoe 66 acts on first signal collector 68 and secondary signal collector 69 reliably, therefore on this sliding shoe 66 and be positioned at a side and be fixed with the seat 663 of raming, adjust screw 66311 by raming and be fixed with one and ram 6631 on the seat 663 of raming, by raming, 6631 with the corresponding relation of aforesaid first signal collector 68 and secondary signal collector 69, make first,

second signal picker

68,69 obtain the stroke signal of said workpiece drilling sectors 5.

When the motor 41 of aforementioned splined shaft driving mechanism 4 is worked, drive the first drive 42 by motor shaft 411, because the first driving-belt 44 is connected between first, second drive 42,43, therefore drive the second drive 43 by the first driving-belt 44, because the second drive 43 is fixed on the upper end of splined shaft 3, therefore drive splined shaft 3 rotations by the second drive 43, thereby drive workpiece drilling sector 5 to be described in detail below by the spline 32 on splined shaft 3.In this process, when the servomotor 61 with rotating function is worked, drive the 3rd drive 62 by servo motor shaft 611, drive the 4th drive 63 through the second driving-belt 64, because the 4th drive 63 is fixed in the upper end of leading screw 67, therefore drive leading screw 67 to rotation clockwise by the 4th drive 63, again because sliding shoe 66 is coordinated with leading screw 67 transmissions by leading screw ball nut mount 65, and sliding shoe 66 is fixedly connected with splined shaft slip cap 31 by sliding shoe hold-down screw 662, therefore when leading screw 67 rotation, drive sliding shoe 66 descending (under the guiding of guide pillar 13) through leading screw ball nut mount 65, thereby it is descending to drive splined shaft slip cap 31.In said process, ensure sleeve pipe 52 rotations that are in transmission connection of the splined shaft of workpiece drilling sectors 5 by the spline 32 on splined shaft 3, drive the splined shafts sleeve pipe 52 that is in transmission connection by splined shaft slip cap 31 descending simultaneously.According to the parameter of setting when raming 6631 while touching secondary signal collector 69, by this secondary signal collector 69, signal feedback is given and is arranged on the programmable controller (PLC) in electric control box, by the programmable controller instruction, motor 41 is quit work, while servomotor 61 reverse operations (servo motor shaft 611 produces and aforementioned contrary direction rotations), sliding shoe 66 is up, drive splined shaft slip cap 31 up, drive workpiece drilling sector 5 by splined shaft slip band 31 up.When raming 6631 while hitting first signal collector 68, servomotor 61 work that alters course again, and motor 41 is also worked.

The workpiece drilling sector 5 that the above has mentioned repeatedly preferably but not the structure definitely be limited to is as follows: comprise inner sleeve 51, the splined shaft sleeve pipe 52 that is in transmission connection, inner sleeve Connection Block 53, sealing ring 54, seal cartridge 55 and bearing chuck 56, inner sleeve 51 is slidably matched with aforementioned outer tube sliding seat 1411, and the upper end of this inner sleeve 51 is connected with the outer wall thread of aforementioned slip cap Connection Block 311, and the lower end of inner sleeve 51 is connected with the outer wall thread of inner sleeve Connection Block 53, the described lower end of the upper end of splined shaft joint sleeve 52 and described splined shaft 3 is in transmission connection, with splined shaft 3 on spline 32 be in transmission connection, drive its rotation by spline 32, form the splined shaft chamber 521 of stepping down is arranged in the be in transmission connection upper end of sleeve pipe 52 of this splined shaft, the be in transmission connection lower end of sleeve pipe 52 of splined shaft is stretched over outside seal cartridge 55, and form and to have a drilling cutters to clamp 522, this drilling cutters clamps 522 formation has a drilling cutters that taper hole 5221 is installed, inner sleeve Connection Block 53 is in transmission connection between sleeve pipe 52 and inner sleeve 51 at splined shaft, and be slidably matched with the splined shaft sleeve pipe 52 that is in transmission connection, sealing ring 54 matches with inner sleeve Connection Block 53 and is fixedly connected with inner sleeve 51 by sealing ring hold-down screw 541, seal cartridge 55 matches with sealing ring 54 below corresponding to sealing ring 54, and clamping 522 with seal cartridge hold-down screw 551 and aforementioned drilling cutters is fixedly connected with, bearing chuck 56 is in transmission connection between sleeve pipe 52 and inner sleeve 51 at splined shaft, be provided with a upper bearing (metal) 561 between the lower end surface of the upper end of this bearing chuck 56 end face and aforementioned slip cap Connection Block 311, and be provided with a pair of lower bearing 562 between the upper end end face of the lower end surface of bearing chuck 56 and aforesaid inner sleeve Connection Block 53, be in transmission connection upper end and the upper bearing (metal) 561 of sleeve pipe 52 of splined shaft is rotatably assorted, and lower end and lower bearing 562 are rotatably assorted.

Preferably, a bearing is set on splined shaft is in transmission connection sleeve pipe 52 and limits nut 523, limit nut 523 by this bearing and with contacting of aforementioned lower bearing 562, lower bearing 562 is limited.

Preferably, aforementioned, propose be embedded with a sliding seat sealing ring 14111(on the inwall of described outer tube sliding seat 1411 above), the be in transmission connection outer wall of sleeve pipe 52 of this sliding seat sealing ring 14111 and aforementioned splined shaft is sealed and matched.And then preferably, be provided with one first sealing ring 5222 and one second sealing ring 5223 clamping at described drilling cutters on 522 outer wall, wherein: the first sealing ring 5222 is corresponding between aforementioned inner sleeve Connection Block 53 and sealing ring 54, and the second sealing ring 5223 coordinates with the inner wall sealing of seal cartridge 55.

While using the utility model, the utility model is shown by the support arm 1413(Fig. 2 be provided on outer tube 141) clamp on the column on lathe or similar equipment, and make the top of workpiece drilling sector 5 corresponding to the workbench of lathe, drilling cutters the be in transmission connection drilling cutters of sleeve pipe 52 of splined shaft of packing into is clamped to 522 drilling cutters and installs in taper hole 5221, and by the applicant, to the description of the course of work of splined shaft driving mechanism 4 and servo feed controlling organization 6, by drilling cutters, to workpiece, drilling goes out required hole in the above.In drilling process, drive splined shafts sleeve pipe 52 rotations that are in transmission connection by the spline 32 of splined shaft 3, make the drilling cutters High Rotation Speed of clamping in drilling cutters is installed taper hole 5221, by the descending of splined shaft slip cap 31, made the splined shaft sleeve pipe 52 that is in transmission connection descending simultaneously, by slip cap Connection Block 311, force the splined shaft sleeve pipe 52 that is in transmission connection descending, in said process, because seal cartridge 55 clamps 522 fixingly by seal cartridge hold-down screw 551 and drilling cutters, so seal cartridge 55 clamps 522 rotation with drilling cutters.

In sum, the technical scheme that the utility model provides has overcome the shortcoming in the prior art effectively, has completed the invention task, has cashed objectively the technique effect referred in the superincumbent technique effect of applicant hurdle.

Claims

1. a kind of servo feed drill unit structure, comprise transmission case holder (1), be fixed on the top of transmission case holder (1) and the transmission case (2) that formation has transmission case chamber (21), with vertical cantilever position pivotable be arranged on transmission case (2) and be insinuated into the splined shaft (3) in transmission case chamber (21), be arranged on transmission case (2) and splined shaft driving mechanism (4) that be in transmission connection with splined shaft (3) in transmission case chamber (21) and with splined shaft (3), be connected for the workpiece drilling sector (5) to the workpiece drilling, characterized by further comprising one for ordering about the servo feed controlling organization (6) of described workpiece drilling sector (5) upstream or downstream, this servo feed controlling organization (6) is arranged on described transmission case (2), and above with workpiece drilling sector (5), be connected at described transmission case holder (1).

2. servo feed drill unit structure according to claim 1, it is characterized in that in the bottom of described transmission case (2) and form a splined shaft block bearing chamber (22) is arranged in the position corresponding to described splined shaft (3), be provided with one first splined shaft block bearing (221) and one second splined shaft block bearing (222) in this splined shaft block bearing chamber (22), this is first years old, the second splined shaft block bearing (221, 222) self correspondence, the upper end of described splined shaft (3) is bearing on the first splined shaft block bearing (221) and the second splined shaft block bearing (222) rotationally, and be stretched in described transmission case chamber (21) after leaning out the first splined shaft block bearing (221), and the lower end of splined shaft (3) is arranged with a splined shaft slip cap (31) slidably, described transmission case holder (1) has a holder top board (11) and a holder base plate (12), be fixed with a guide pillar (13) between this holder top board (11) and holder base plate (12), described servo feed controlling organization (6) is slidably matched with guide pillar (13), and this servo feed controlling organization (6) also is connected with described slip cap (31), and slip cap (31) is slidably matched with described holder base plate (12), and be connected with described workpiece drilling sector (5), be provided with at the top of described transmission case (2) for described splined shaft driving mechanism (4) and described servo feed controlling organization (6) and cover the case lid (23) protected.

3. servo feed drill unit structure according to claim 2, it is characterized in that described splined shaft driving mechanism (4) comprises motor (41), first, the second drive (42, 43) and the first driving-belt (44), motor (41) is fixed on the bottom of described transmission case (2), the motor shaft (411) of this motor (41) is in the bottom of transmission case (2) is stretched over described transmission case chamber (21), the first drive (42) is positioned at transmission case chamber (21) and fixing with motor shaft (411), the second drive (43) is positioned at transmission case chamber (21), and be fixed on the described upper end of described splined shaft (3), one end of the first driving-belt (44) is nested with on the first drive (42), and the other end is nested with on the second drive (43).

4. servo feed drill unit structure according to claim 3, is characterized in that described first, second drive (42,43) is synchronous pulley, and described the first driving-belt (44) is Timing Belt.

5. servo feed drill unit structure according to claim 2, it is characterized in that upper at the described holder base plate (12) of described transmission case holder (1) and be extended with an outer tube connector (14) towards a side of described workpiece drilling sector (5), this outer tube connector (14) is corresponding with described splined shaft slip cap (31), and in the upper upper end that connects an outer tube (141) with the vertical cantilever state of this outer tube connector (14), and the lower end of outer tube (141) is connected with an outer tube sliding seat (1411), described splined shaft slip cap (31) in the overcoat tube chamber (1412) through being stretched over outer tube (141) after outer tube connector (14) and expansion be provided with a slip cap Connection Block (311), described workpiece drilling sector (5) is in transmission connection with the described lower end of described splined shaft (3) in casing cavity (1412) outside, and be slidably matched with described outer tube sliding seat (1411), be fixed with a contiguous block (121) on described holder base plate (12), be fixedly connected with a lead screw shaft bearing (122) on this contiguous block (121), this lead screw shaft bearing (122) is corresponding with described servo feed controlling organization (6), be provided with at least one case lid fixed bolt (211) in the transmission case chamber (21) of described transmission case (2), the middle part of the length direction of described case lid (23) and case lid fixed bolt (211) are fixing, described guide pillar (13) keeps vertically parallel with described splined shaft (3).

6. servo feed drill unit structure according to claim 5, it is characterized in that described servo feed controlling organization (6) comprises servomotor (61), the 3rd, the 4th drive (62, 63), the second driving-belt (64), leading screw ball nut mount (65), sliding shoe (66), leading screw (67), first signal collector (68) and secondary signal collector (69), servomotor (61) is fixed on the bottom of described transmission case (2), the servo motor shaft (611) of this servomotor (61) is in the bottom of transmission case (2) is stretched over described transmission case chamber (21), the 3rd drive (62) is positioned at transmission case chamber (21) and is fixed on servo motor shaft (611), leading screw ball nut mount (65) is arranged on an end of sliding shoe (66), the middle part of sliding shoe (66) is nested with slidably on described guide pillar (13), the other end of sliding shoe (66) is nested with upper at described splined shaft slip cap (31) and fixing with splined shaft slip cap (31), the upper end of leading screw (67) is bearing in rotationally transmission case (2) above and is insinuated in transmission case chamber (21) by leading screw upper bearing (metal) (671), the middle part of leading screw (67) and leading screw ball nut mount (65) are rotatably assorted, and the lower end of leading screw (6) is bearing on described lead screw shaft bearing (122) rotationally by leading screw lower bearing (672), the 4th drive (63) is positioned at transmission case chamber (21) and is fixed on the described upper end of leading screw (67), one end of the second driving-belt (64) is nested with on the 3rd drive (62), the other end is nested with on the 4th drive (63), first signal collector (68) is fixed on the bottom of transmission case (2), and corresponding with described sliding shoe (66), secondary signal collector (69) is fixed on described contiguous block (121) in the position corresponding to first signal collector (68), and same corresponding with sliding shoe (66).

7. servo feed drill unit structure according to claim 6, is characterized in that described the 3rd drive (62) and the 4th drive (63) are synchronous pulley, and described the second driving-belt (64) is Timing Belt.

8. servo feed drill unit structure according to claim 6, is characterized in that described first signal collector (68) and secondary signal collector (69) are travel switch, microswitch, position approach switch, tongue tube or hall sensing element.

9. servo feed drill unit structure according to claim 5, it is characterized in that described workpiece drilling sector (5) comprises inner sleeve (51), the splined shaft sleeve pipe (52) that is in transmission connection, inner sleeve Connection Block (53), sealing ring (54), seal cartridge (55) and bearing chuck (56), inner sleeve (51) is slidably matched with described outer tube sliding seat (1411), and the upper end of this inner sleeve (51) is connected with the outer wall thread of described slip cap Connection Block (311), and the lower end of inner sleeve (51) is connected with the outer wall thread of inner sleeve Connection Block (53), the described lower end of the upper end of splined shaft joint sleeve (52) and described splined shaft (3) is in transmission connection, and form the splined shaft chamber (521) of stepping down is arranged in the be in transmission connection upper end of sleeve pipe (52) of this splined shaft, splined shaft is in transmission connection, and to be stretched over seal cartridge (55) outer and form and have a drilling cutters to clamp head (522) for the lower end of sleeve pipe (52), this drilling cutters clamps head (522) formation has a drilling cutters that taper hole (5221) is installed, inner sleeve Connection Block (53) is positioned at splined shaft and is in transmission connection between sleeve pipe (52) and inner sleeve (51), and be slidably matched with the splined shaft sleeve pipe (52) that is in transmission connection, sealing ring (54) matches with inner sleeve Connection Block (53) and is fixedly connected with inner sleeve (51), seal cartridge (55) matches with sealing ring (54) in the below corresponding to sealing ring (54), and clamping head (522) with described drilling cutters is fixedly connected with, bearing chuck (56) is positioned at splined shaft and is in transmission connection between sleeve pipe (52) and inner sleeve (51), be provided with a upper bearing (metal) (561) between the lower end surface of the upper end end face of this bearing chuck (56) and described slip cap Connection Block (311), and be provided with lower bearing (562) between the upper end end face of the lower end surface of bearing chuck (56) and described inner sleeve Connection Block (53), be in transmission connection upper end and the upper bearing (metal) (561) of sleeve pipe (52) of splined shaft is rotatably assorted, and lower end and lower bearing (562) are rotatably assorted.

10. servo feed drill unit structure according to claim 9, it is characterized in that being embedded with a sliding seat sealing ring (14111) on the inwall of described outer tube sliding seat (1411), the be in transmission connection outer wall of sleeve pipe (52) of this sliding seat sealing ring (14111) and described splined shaft is sealed and matched; Described drilling cutters clamp the head (522) outer wall on be provided with one first sealing ring (5222) and one second sealing ring (5223), wherein: the first sealing ring (5222) is corresponding between described inner sleeve Connection Block (53) and sealing ring (54), and the second sealing ring (5223) coordinates with the inner wall sealing of seal cartridge (55).