CN2072876U

CN2072876U - Stepless speed change drilling machine

Info

Publication number: CN2072876U
Application number: CN 90216621
Authority: CN
Inventors: 陈朝阳
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-07-19
Filing date: 1990-07-19
Publication date: 1991-03-13

Abstract

The utility model provides a simple drilling machine of stepless speed change, which is a structure improvement of the universal drilling machine in the mechanical industry. The simple drilling machine of stepless speed change comprises a column 2 with a worktable 3 installed on the base 1, a driving wheel device 5 installed on the column 2 and driven by a motor 4, a driven wheel device 11 for driving a feeding main shaft 23, a handle 24 with a feeding gear, and a machine enclosure 2. The simple drilling machine of stepless speed change proceeds stepless speed change by changing the pitch circle diameter of the pulley of driven wheel device 11 and the driving wheel device 5, the simple drilling machine of stepless speed change feeds the cutting tool by the handle 24 of the feeding gear engaging with the vertical rack of the column 2, and the simple drilling machine of stepless speed change resets and withdraws the cutting tool by a resetting spring 25 in the column 2. The utility model has simple structure and easy operation.

Description

Stepless speed change drilling machine

The utility model relates to the simple and easy drilling machine of a kind of infinitely variable speeds, is applicable to the speed change gear in the cutting machine drilling machine general in the mechanical industry and the architecture advances of feed mechanism.

In prior art, modern drilling machine substantially all passes through gearbox to processing with vertical major by motor transmission kinetic energy and is transformed into multiple needed rotating speed.Still utilize belt directly the motion of motor to be passed to main shaft and be used for the small desk drilling machine that instrument, electrical equipment and instrument system repair, and with the multistage belt wheel conversion speed of mainshaft that is contained on motor reel and the main shaft.The limited needs that can not satisfy current processing fully of its slewing range, and conversion rate work also bothers very much.The hand feeding mechanism of drilling machine control cutter vertical feed substantially all be adopt with handle rotate single-start worm, by with worm gear on the coaxial rotation of gear on the main shaft sleeve pinion rack roll and make main shaft vertical feed cutter or withdrawing, this kind feed mechanism more complicated, the manufacturing assembling is difficult, cost is higher.

The purpose of this utility model provides a kind of infinite variable speed simple and easy drilling machine, it be on drilling machine, make the motion that is delivered to the vertical major of processing by motor adopt a kind of do not need gearbox not need multistage belt wheel yet and can obtain the stepless speed change device of multiple required cutting speed easily and have do not have worm screw, the easy hand feeding mechanism of worm gear.

A kind of infinite variable speed simple and easy drilling machine of the utility model, it is by support substantially, be contained in the column that has workbench on the support, be contained in the motor on column top, the connected driven pulley device of driving wheel device on the motor, be subjected to the feeding main shaft of driven pulley device driven rotary, and the feed mechanism of control feeding main shaft lifting advance and retreat cutter is formed, it is characterized in that: the driving wheel device ［ 5 ］ on a. motor ［ 4 ］ by be fixed on motor ［ 4 ］ output shaft fast pulley ［ 6 ］ with can make axially movable movable wheel ［ 7 ］ on the output shaft and formed with being enclosed within the locating wheel ［ 9 ］ that spring ［ 8 ］ are housed, the disk inner plane of locating wheel ［ 9 ］ is provided with the protrusion of several hillside shapes on same circumference, the bottom surface of movable wheel ［ 7 ］ be provided with one can embed each arc convex thing by two circular grooves that circle surrounded, be provided with the projection that has identical interior external diameter equivalent amount with the arc convex thing in the groove, between locating wheel ［ 9 ］ circumference inner plane and movable wheel ［ 7 ］ groove baseplane, spring ［ 8 ］ be housed; B. driven pulley device ［ 11 ］ is the fast pulley ［ 12 ］ that has similar spoke-like rib on the feeding main shaft ［ 23 ］ by being fixed on, pushing down bearing ［ 14 ］ with bearing cap ［ 15 ］ can do with pushing ram ［ 20 ］, bottom offset also has and the be staggered activity wheel ［ 13 ］ of rib of fast pulley ［ 12 ］, and the outer end is equipped with knob ［ 19 ］ and is stood and have in middle and upper part, guide holder hole, positioning seat ［ 16 ］ top and can form with the pushing ram ［ 20 ］ of the wide screw thread of round bottom of steel ball ［ 17 ］ engagement, positioning seat ［ 16 ］ upper circular guide holder periphery is shaped on screw thread, the pedestal middle part is being provided with the circular hole of dress steel ball ［ 17 ］ in several on the lower side, cylindrical is gone up string near shaft-use elastic gear ring ［ 21 ］ is installed in the groove of upper end with restriction nut ［ 18 ］, be shaped in nut ［ 18 ］ hole can with the internal thread of guide holder periphery engagement, be shaped on can be in order to compress the taper seat of steel ball ［ 17 ］ in the bottom in the hole; C. driving wheel that the top circular surfaces of fast pulley ［ 12 ］, movable wheel ［ 13 ］ bottom circular surfaces institute form separately in the bottom circular surfaces of fast pulley ［ 6 ］, movable wheel ［ 7 ］ top circular surfaces and the driven pulley device ［ 11 ］ in the driving wheel device ［ 5 ］ and driven pulley in the middle of it relative all surface be working surface with the V belt contacts side surfaces, its V-arrangement corner dimension is all consistent with the pulley concial disk V-arrangement angle of using always; D. the feed mechanism that makes feeding main shaft ［ 23 ］ vertical feed cutter is by the handle that has feed gear wheel ［ 24 ］, column ［ 2 ］ is gone up the tooth bar that equivalent length can be meshed with feed gear wheel that has of installing, and be located at vertical shaft ［ 27 ］ in column ［ 2 ］ body and the return spring ［ 25 ］ more than stop ［ 26 ］ is formed, the return spring ［ 25 ］ that has the handle ［ 24 ］ of feed gear wheel and be located in the column ［ 2 ］ can make with the motor ［ 4 ］ that is contained in casing ［ 22 ］ inside and outside, driving wheel device ［ 5 ］, V belt ［ 10 ］, driven pulley device ［ 11 ］ and each parts of feeding main shaft ［ 23 ］ are done along the whole group of column ［ 2 ］, bottom offset is so that feeding main shaft ［ 23 ］ feeding cutter or upwards return withdrawing and restore.

The utility model compared with the prior art, can make former usefulness need can only make by two groups of multi-stage, belts wheel the feeding main shaft obtain about three kinds of different rotating speeds be improved to can be at any time by change earlier the pitch diameter that makes driving wheel that the driven pulley pitch diameter continues then also respective change promptly can obtain the stepless speed-regulating device of the needed any rotating speed of feeding main shaft, make the feed arrangement of more parts such as worm screw, worm gear are housed originally be improved to the hand feeding mechanism of no above-mentioned processed complex part and make drilling machine simple in structure, accessory reduces, and cost reduces and convenient the use.

Accompanying drawing:

Fig. 1. the total assembly drawing of infinite variable speed simple and easy drilling machine

Fig. 2. driving wheel device ［ 5 ］ assembly drawing

Fig. 3. driven pulley device ［ 11 ］ assembly drawing

Parts title in the figure:

1. support 2. columns 3. workbench 4. motor 5. driving wheel devices 6. fast pulleys 7. castors 8. springs 9. locating wheels 10. V belts 11. driven pulley devices 12. fast pulleys 13. castors 14. bearings 15. bearing caps 16. positioning seats 17. steel balls 18. nuts 19. knobs 20. pushing rams 21. shaft-use elastic gear rings 22. casings 23. feeding main shafts 24. are with handle 25. return springs 26. stops 27. vertical shafts of feed gear wheel

The accompanying drawings specific embodiment of the utility model: accompanying drawing 1 is depicted as the total assembly drawing of infinite variable speed simple and easy drilling machine, hollow and upper front right are equipped with the vertical column with suitable length tooth bar ［ 2 ］ and are fixed on the support ［ 1 ］ in vivo, the shaft of column ［ 2 ］ is installed with the workbench ［ 3 ］ that can move up and down and can be fixed, dress driving wheel device ［ 5 ］ in the top of column ［ 2 ］ is equipped with, the driven pulley device ［ 11 ］ that drags by V belt ［ 10 ］, the whole group of casing ［ 22 ］ that waits each critical piece by the feeding main shaft ［ 23 ］ of driven pulley device ［ 11 ］ driven rotary and the handle ［ 24 ］ that has a feed gear wheel as motive motor ［ 4 ］ connect hang over driving wheel device ［ 5 ］ below.The whole group of casing ［ 22 ］ that comprises each parts all is fixed on the vertical shaft ［ 27 ］ of hollow centre in pillar ［ 2 ］ body together with motor ［ 4 ］, and by going up fixing return spring ［ 25 ］ institute support with stop ［ 26 ］.Driving wheel device ［ 5 ］ as shown in Figure 2 coaxially the locating wheel ［ 9 ］ that transportable movable wheel ［ 7 ］ is equipped with spring ［ 8 ］ and is formed with being enclosed within by the fast pulley ［ 6 ］ that is fixed on motor ［ 4 ］ output shaft, remains and draws close fast pulley ［ 6 ］ and clamp V belt ［ 10 ］ because ［ 7 ］ are taken turns in the effect of spring ［ 8 ］, activity.As shown in Figure 3 driven pulley device ［ 11 ］ be by one be fixed on feeding main shaft ［ 23 ］ go up its top working face by one group have some categories like the fast pulley ［ 12 ］ of spoke-like rib, its underpart working face have with the staggered rib of fast pulley ［ 12 ］ mutually the activity of corresponding insertion take turns ［ 13 ］, upper end is equipped with knob ［ 19 ］ lower end and the pushing ram ［ 20 ］ that has the wide screw thread of round bottom on bearing ［ 14 ］ body of rod is housed is formed.Use screwed bearing cap ［ 15 ］ to be pressed on the bearing of placing in the circle on movable wheel ［ 13 ］ body ［ 14 ］, pushing ram ［ 20 ］ vertically stands on being shaped in the middle circular hole of the cylindrical guide way of external screw thread on the positioning seat ［ 16 ］, the guide way bottom is provided with several circular holes that steel ball ［ 17 ］ are housed, push down to be shaped on the nut ［ 18 ］ that the internal thread bottom is rotary with taper surface, nut ［ 18 ］ end face is limited with the shaft-use elastic gear ring ［ 21 ］ that is installed on cylindrical guide way upper end does not make slippage, the steel ball ［ 17 ］ that nut ［ 18 ］ compresses is engaged on the wide screw thread of round bottom of pushing ram ［ 20 ］, can move up and down by drive activity wheel ［ 13 ］ when making pushing ram ［ 20 ］ rotation to reverse knob ［ 19 ］, adjustment activity wheel ［ 13 ］ with fast pulley ［ 12 ］ even between the distance of working face and corner dimension also therebetween the V belt ［ 10 ］ of installation change corresponding to the pitch diameter on this driven pulley and also bring the respective change of driving wheel pitch diameter, because driving wheel ［ 5 ］ device of being installed on V belt ［ 10 ］ and motor ［ 4 ］ output shaft is connected, and the V belt of a shared fixed length ［ 10 ］ is for the variation of driven pulley pitch diameter, and the rotating speed that makes feeding main shaft ［ 23 ］ can be adjusted transformation on demand, nut ［ 18 ］ can be tightened after rotating speed is reserved, thereby finish power transmission and infinite variable speed adjustment between motor ［ 4 ］ and the feeding main shaft ［ 23 ］.The advance and retreat cutter of its feeding main shaft is then all controlled by the handle that has feed gear wheel ［ 24 ］ that is contained on the casing ［ 22 ］, feed gear wheel and column ［ 2 ］ go up that the vertical tooth rack that is provided with is meshed, downfeed its return spring ［ 25 ］ is by compression when handle ［ 24 ］ is rotated counterclockwise Shi Zeke, after finishing the work of drilling and reaming, release handle ［ 24 ］, spring by compression is because the effect of recuperability, and each parts of being contained in the casing ［ 22 ］ risen simultaneously together with the motor ［ 4 ］ of outside and feeding main shaft ［ 23 ］ withdrawing is restored.This kind hand feed apparatus structure is simple, processing ease.

Claims

1, a kind of infinite variable speed simple and easy drilling machine, it substantially by support, be contained in the column that has workbench on the support, be contained in the motor on column top, the connected driven pulley device of the driving wheel device on the motor, be subjected to driven pulley device driven rotary the feeding main shaft, and the feed mechanism of control feeding main shaft lifting advance and retreat cutter formed, it is characterized in that;

A. the driving wheel device [5] on the motor [4] by be fixed on motor [4] output shaft fast pulley [6] with can make axially movable movable wheel [7] on the output shaft and formed with being enclosed within the locating wheel [9] that spring [8] are housed, the disk inner plane of locating wheel [9] is provided with the protrusion of several hillside shapes on same circumference, the bottom surface of movable wheel [7] be provided with one can embed each arc convex thing by two circular grooves that circle surrounded, be provided with the projection that has identical interior external diameter equivalent amount with the arc convex thing in the groove, between locating wheel [9] circumference inner plane and movable wheel [7] groove baseplane, spring [8] be housed;

B. driven pulley device [11] is the fast pulley [12] that has similar spoke-like rib on the feeding main shaft [23] by being fixed on, pushing down bearing [14] with bearing cap [15] can do with pushing ram [20], bottom offset also has and the be staggered activity wheel [13] of rib of fast pulley [12], and the outer end is equipped with knob [19] and is stood and have in middle and upper part, guide holder hole, positioning seat [16] top and can form with the pushing ram [20] of the wide screw thread of round bottom of steel ball [17] engagement, positioning seat [16] upper circular guide holder periphery is shaped on screw thread, the pedestal middle part is being provided with the circular hole of dress steel ball [17] in several on the lower side, cylindrical is gone up string near shaft-use elastic gear ring [21] is installed in the groove of upper end with restriction nut [18], be shaped in nut [18] hole can with the internal thread of guide holder periphery engagement, be shaped on can be in order to compress the taper seat of steel ball [17] in the bottom in the hole;

C. driving wheel that the top circular surfaces of fast pulley [12], movable wheel [13] bottom circular surfaces institute form separately in the bottom circular surfaces of fast pulley [6], movable wheel [7] top circular surfaces and the driven pulley device [11] in the driving wheel device [5] and driven pulley in the middle of it relative all surface be working surface with the V belt contacts side surfaces, its V-arrangement corner dimension is all consistent with the pulley concial disk V-arrangement angle of using always;

D. the feed mechanism that makes feeding main shaft [23] vertical feed cutter is by the handle that has feed gear wheel [24], column [2] is gone up the tooth bar that equivalent length can be meshed with feed gear wheel that has of installing, and be located at vertical shaft [27] in column [2] body and the return spring [25] more than stop [26] is formed, the return spring [25] that has the handle [24] of feed gear wheel and be located in the column [2] can make with the motor [4] that is contained in casing [22] inside and outside, driving wheel device [5], V belt [10], driven pulley device [11] and each parts of feeding main shaft [23] are done along the whole group of column [2], bottom offset is so that feeding main shaft [23] feeding cutter or upwards return withdrawing and restore.