CN201098748Y

CN201098748Y - Bench drill

Info

Publication number: CN201098748Y
Application number: CNU2007200451463U
Authority: CN
Inventors: 严长国; 严卫华
Original assignee: YANCHENG SUYU MACHINERY MANUFACTURING Co Ltd
Current assignee: YANCHENG SUYU MACHINERY MANUFACTURING Co Ltd
Priority date: 2007-08-20
Filing date: 2007-08-20
Publication date: 2008-08-13
Anticipated expiration: 2017-08-20

Abstract

The utility model provides a bench-type drilling machine, which comprises a chassis, a pillar, a work bench, a cantilever base, a spindle, a motor, a drive wheel tower, a driven wheel tower, a delivering gear shaft, a delivering mechanism and a speed change mechanism. The delivering mechanism includes a worm, a worm wheel, a clutch gear pair and a poking fork, wherein the worm is connected with the spindle through the speed change mechanism, the worm is also engaged with the worm wheel on the delivering gear shaft; the fixed clutch gear of the clutch gear pair is arranged on the middle section of the worm, and the sliding clutch gear is arranged on the spline of the delivering gear shaft; a spring is arranged between two clutch gears; a poking fork fixing block with a poking fork is arranged on the delivering gear shaft on the outer side of the sliding clutch gear; the poking fork is arranged in a poking fork groove on the outer end face of the sliding clutch gear; and an adjusting nut and a disc spring are respectively arranged on both ends of the delivering gear shaft. The bench-type drilling machine has the advantages of novel design, reasonable structure and easy manufacture, and can achieve automatic delivering, effectively lower the labor intensity and improve the work efficiency on the basis of maintaining the manual delivering function.

Description

A kind of bench drill

Technical field

The utility model relates to a kind of machining equipment, particularly a kind of bench drill.

Background technology

Bench drill is one of common equipment in the machining.Existing bench drill mainly is made up of motor, base, column, workbench, main shaft, collar bush, operating grip and collar bush line reciprocator, motor drives main shaft by belt and rotates, the drill bit that is installed on the main shaft end also rotates thereupon, by manually-operated collar bush line reciprocator, make the feed gear shaft drive tooth bar motion on the collar bush, that be meshed with the feed gear shaft, thereby realize boring processing workpiece.Need manually-operated because boring adds man-hour, very painstaking during operation, labor strength is big, inefficiency.

Summary of the invention

For overcoming the deficiencies in the prior art part, the utility model provide a kind of modern design, rational in infrastructure, easily manufactured, can self-acting feed, the bench drill that reduces labour intensity, effectively increase work efficiency.

The technical scheme that its technical problem that solves the utility model adopts is: it comprises base, column, workbench, cantilever seat, main shaft, motor, driving wheel tower, driven pulley tower, feed gear shaft, and the driving wheel tower that is loaded on the motor output shaft links to each other with the driven pulley tower that is loaded on the main shaft upper end by belt; The bottom of main shaft is provided with collar bush, and collar bush is provided with the tooth bar that is meshed with the feed gear shaft; It is characterized in that: also comprise delivering gear and gear; The delivering gear that comprises worm screw, worm gear, clutch gear pair, shifting fork bar, the upper end of worm screw links to each other with main shaft through gear, the lower end of worm screw is meshed with worm gear on being placed on the feed gear shaft, the fixedly clutch gear of clutch gear pair is loaded on the middle part of worm gear, and fix with worm gear, the slide engaging and disengaging gear is loaded on the spline on the worm gear outside feed gear shaft, and this slide engaging and disengaging gear can endwisely slip on spline; Be provided with spring between two clutch gears, be provided with the shift fork fixed block that is loaded on the feed gear shaft in the outboard chambers of slide engaging and disengaging gear, be provided with several shifting fork bars (being control crank) on the shift fork fixed block equably, be provided with the figure of three fork slot that array is made of two half slots and bar shaped lead-over groove on the end face of the outside of slide engaging and disengaging gear, shifting fork bar is placed in the above-mentioned fork slot; The outside feed gear shaft axle head of shift fork fixed block is equipped with adjusting nut, and the other end of feed gear shaft is provided with disc spring.Under normal condition, shifting fork bar places the later half circular groove (in the direction of the clock) of figure of three fork slot, and at this moment, because the spring action between the clutch gear pair, two clutch gears are in released state.During work, if need carry out self-acting feed boring, only need shifting fork bar is pressed down and places on the lead-over groove of figure of three fork slot, because shift fork fixed block and feed gear shaft fix, thereby driving the feed gear shaft rotates, the tooth bar of feed gear shaft drive collar bush is descending, make drill bit come downwards to workpiece, simultaneously, the slide engaging and disengaging gear is meshed with fixing clutch gear owing to the effect of shifting fork bar overcomes the acting force of the spring between two clutch gears, and this moment, worm screw drove worm gear, clutch gear is secondary to rotate, thereby the feed gear shaft is rotated, and drive main shaft, drill bit is descending, realizes self-acting feed, boring; If the secondary engagement of clutch gear tension, then with adjusting nut to inner rotary; In like manner, if the clutch gear pair meshed pine, then the adjusting nut reverse rotation is got final product.Boring finishes, and then shifting fork bar is recalled to later half circular groove, and clutch gear this moment secondary separation, main shaft is under the effect of disc spring and reset.If need carry out manual feed boring, then shifting fork bar is pressed down in the preceding half slot that transfers to figure of three fork slot, at this moment, clutch gear vice division chief only needs during boring shifting fork bar is pressed down in released state, can manually hole as common driller.

Wheel disc, idler gear, speed change duplicate gear and driven wheel in the middle of above-mentioned gear comprises; Middle wheel disc links to each other with the driven pulley tower by belt, carries out the one-level speed change; Fix with middle wheel disc and coaxial idler gear is meshed with the gear wheel of speed change duplicate gear, carry out two speed changes; The pinion of speed change duplicate gear is meshed with the driven wheel that is loaded on the worm screw upper end, thereby realizes three-step gear shift, drives worm screw simultaneously and rotates.

Be to regulate the rate of tension of the belt between driven pulley tower and the middle wheel disc, the axle bed of middle wheel disc and idler gear fixes by the chute offered on it and bolt and cantilever seat.

Be to regulate the engagement degree between the gear wheel of idler gear and speed change duplicate gear, the axle bed of speed change duplicate gear is fixed on the fan-shaped adjustable plate that is set in the worm screw upper end, and fan-shaped adjustable plate fixes by the deep-slotted chip breaker offered on it and adjusting bolt and cantilever seat.

In order further to increase work efficiency, self-acting feed boring processing after advancing mechanism can be automatically reset, on the outer surface of slide engaging and disengaging gear, be equipped with annular shift fork fixed cover, the outboard end face of shift fork fixed cover offers the bar shaped stopper slot corresponding to the fork slot on the slide engaging and disengaging gear, the outer surface of shift fork fixed cover is equipped with the spacing shift fork cover of opening, opening part constitutes limited block to outer lug, and links to each other by regulating bolt, makes spacing shift fork cover lock ring on the shift fork fixed cover; On the cantilever seat, be provided with gag lever post corresponding to above-mentioned limited block.During work, at first by regulating the stroke that bolt regulates delivering gear, when delivering gear moves, spacing shift fork cover and shift fork fixed cover rotate along with the rotation of feed gear shaft, slide engaging and disengaging gear, when the limited block that puts when spacing shift fork goes to gag lever post, spacing shift fork cover and shift fork fixed cover stop operating, and feed gear shaft, slide engaging and disengaging gear and shifting fork bar also are rotated further, and the stopper slot of shifting fork bar and spacing shift fork cover produces relative motion; When shifting fork bar went to the stopper slot edge of spacing shift fork cover, shifting fork bar was obstructed and can't rotates, and got back in the later half circular groove of figure of three fork slot thereby shifting fork bar is dialled, and clutch gear is secondary to be separated, and delivering gear is resetted by the effect of disc spring.

For ease of the stroke adjustment of delivering gear, on the outer surface of slide engaging and disengaging gear, also be equipped with dial.

The beneficial effects of the utility model are: novel in design, rational in infrastructure, be easy to make, on the basis that keeps manual feed function, realize self-acting feed, and reduce labour intensity effectively, improved operating efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the structural representation of the delivering gear of the utility model embodiment;

Fig. 4 is the structural representation of the slide engaging and disengaging gear of the utility model embodiment.

Among the figure: 1 is the active wheel disc, 2 is belt, 3 is the gear wheel of speed change duplicate gear, 4 is the pinion of speed change duplicate gear, 5 is middle wheel disc, 6 is idler gear, 7 is worm screw, 8 is fan-shaped adjustable plate, 9 is driven wheel, 10 is belt, 11 is main shaft, 12 is driven wheel disc, 13 is gag lever post, 14 is spacing shift fork cover, 15 is the shift fork fixed cover, 16 is the slide engaging and disengaging gear, 17 is drill bit, 18 is shifting fork bar, 19 is adjusting nut, 20 is the cantilever seat, 21 is workbench, 22 is column, 23 is motor, 24 is base, 25 is axle bed, 26 is bolt, 27 is chute, 28 for regulating bolt, 29 is deep-slotted chip breaker, 30 is dial, 31 is spring, 32 is bearing, 33 are fixing clutch gear, 34 is axle sleeve, 35 are the feed gear shaft, 36 is disc spring, 37 is collar bush, 38 is tooth bar, 39 is limited block, 40 for regulating bolt, 41 is steady pin, 42 is fork slot, 42-1 is later half circular groove, 42-2 is a lead-over groove, 42-3 is preceding half slot, 43 is stopper slot, 44 is the shift fork fixed block, 45 is spline, 46 is worm gear, 47 is spline.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

The utility model comprises: base 24, column 22, workbench 21, cantilever seat 20, main shaft 11, motor 23, driving wheel tower 1, driven pulley tower 12, feed gear shaft 35, delivering gear and gear.The driving wheel tower 1 that is loaded on motor 23 output shafts links to each other with the driven pulley tower 12 that is loaded on main shaft 11 upper ends by belt 2; The bottom of main shaft 12 is provided with collar bush 37, and collar bush 37 is provided with the tooth bar 38 that is meshed with feed gear shaft 35; The delivering gear that comprises worm screw 7, worm gear 46, clutch gear pair and shifting fork bar 18, the upper end of its worm screw 7 links to each other with main shaft 11 through gear, and the lower end of worm screw 7 is meshed with worm gear 46 on being placed on feed gear shaft 35; The fixedly clutch gear 33 of clutch gear pair is fixed in the middle part (fixedly clutch gear 33 is made into integrative-structure with worm gear 46) of worm gear 46, and fixedly clutch gear 33 is placed on the feed gear shaft 35 by axle sleeve 34; Slide engaging and disengaging gear 16 is loaded on the spline 45 on worm gear 46 outside feed gear shafts 35 by the spline 47 at its middle part, and this slide engaging and disengaging gear 16 can endwisely slip on spline 45.All offer cavity on the adjacent end face of two clutch gears 16,33, be provided with spring 31 in the cavity, separate to realize that clutch gear is secondary, and in that fixedly 31 on clutch gear 33 and spring are provided with unilateral thrust spherical bearing 32; Be provided with the shift fork fixed block 44 that is placed on the feed gear shaft 35 in the outboard chambers of slide engaging and disengaging gear 16, be provided with three shifting fork bars 18 (being control crank) on the shift fork fixed block 44 equably, on the end face of the outside of slide engaging and disengaging gear 16, be provided with three groups by two half slot 42-1, the figure of three fork slot 42 that 42-3 and bar shaped lead-over groove 42-2 constitute, shifting fork bar 18 is placed in the above-mentioned fork slot 42, outside feed gear shaft 35 axle heads of shift fork fixed block 44 are provided with the adjusting nut of fixing with steady pin 41 19, and the other end of feed gear shaft 35 is provided with disc spring 36.Wheel disc 5, idler gear 6, speed change duplicate gear and driven wheel 9 in the middle of above-mentioned gear comprises; Middle wheel disc 5 links to each other with driven pulley tower 12 by belt 10, carries out the one-level speed change; Fix (or one) and coaxial idler gear 6 with middle wheel disc 5 and be meshed, carry out two speed changes with the gear wheel 3 of speed change duplicate gear; The pinion 4 of speed change duplicate gear is meshed with driven wheel 9 on being loaded on worm screw 7, thereby realizes three-step gear shift, drives worm screw 7 simultaneously and rotates; Like this, after the gear speed change, the speed change of driven pulley wheel disc 12 in addition, rotating speed of motor can be reduced to 30～50 rev/mins by 1000 rev/mins when transferring to feed gear shaft 35.For regulating the rate of tension of the belt 10 between driven pulley tower 12 and the middle wheel disc 5, middle wheel disc 5 fixes with cantilever seat 20 by chute 27 and the bolt of offering on it 26 with the axle bed 25 of idler gear 6.Be the engagement degree between the gear wheel 3 of regulating idler gear 6 and speed change duplicate gear, the axle bed of speed change duplicate gear is fixed on the fan-shaped adjustable plate 8 that is set on the worm screw 7, and fan-shaped adjustable plate 8 fixes with cantilever seat 20 by deep-slotted chip breaker 29 and the adjusting bolt of offering on it 28.In order further to increase work efficiency, self-acting feed boring processing after advancing mechanism can be automatically reset, on the outer surface of slide engaging and disengaging gear 16, be equipped with annular shift fork fixed cover 15, offer stopper slot 43 corresponding to the fork slot on the slide engaging and disengaging gear 16 42 on the outside end face of shift fork fixed cover 15; The outer surface of shift fork fixed cover 15 is equipped with the spacing shift fork cover 14 of opening, and its opening part constitutes limited block 39 to outer lug, and links to each other by regulating bolt 40, and spacing shift fork cover 39 is fixed with shift fork fixed cover 15; On cantilever seat 20, be provided with gag lever post 13 corresponding to above-mentioned limited block 39.For ease of the stroke adjustment of delivering gear, on the outer surface of slide engaging and disengaging gear 16, also be equipped with dial 30.

Under normal condition, shifting fork bar 18 places the later half circular groove 42-1 of figure of three fork slot 42, and at this moment, because the effect of the spring 31 between the clutch gear pair, two clutch gears 16,33 are in released state.

During work, if need carry out self-acting feed boring, at first regulate the stroke of delivering gear by the adjusting bolt 40 of spacing shift fork cover 14, it is the distance between limited block 39 and the gag lever post 13, again shifting fork bar 18 is pressed down and place on the lead-over groove 42-2 of the figure of three fork slot 42 on the slide engaging and disengaging gear 16, because shift fork fixed block 44 fixes with feed gear shaft 35, thereby driving feed gear shaft 35 rotates, tooth bar 38 on the gear driven main shaft 11 on the feed gear shaft 35 is descending, make drill bit 17 come downwards to workpiece, simultaneously, slide engaging and disengaging gear 16 is owing to spring 31 active forces that the effect of shifting fork bar 18 overcomes between the clutch gear pair mesh, and this moment, worm screw 7 drove worm gears 46, clutch gear is secondary to rotate, thereby feed gear shaft 35 is rotated, and drive main shaft 11, collar bush 37, drill bit 17 is descending, realizes self-acting feed; When the limited block 39 on the spacing shift fork cover 14 goes to gag lever post 13, spacing shift fork cover 14 and shift fork fixed cover 15 stop operating, and feed gear shaft 35, slide engaging and disengaging gear 16 and shifting fork bar 18 also are rotated further, and shifting fork bar 18 produces relative motion with the stopper slot 43 of spacing shift fork cover 14; When shifting fork bar 18 goes to stopper slot 43 edges of spacing shift fork cover 14, shifting fork bar 18 is obstructed and can't rotates, get back in the later half circular groove 42-1 of figure of three fork slot 42 thereby shifting fork bar 18 is dialled, clutch gear is secondary to be separated, and delivering gear is resetted by the effect of disc spring 36.

If need carry out manual feed boring, then shifting fork bar 18 is pressed down in the preceding half slot 42-3 that transfers to fork slot 42, this moment, clutch gear vice division chief was in released state; Only need shifting fork bar 18 is pressed down, can manually hole as common driller.

Claims

1, a kind of bench drill, it comprises base, column, workbench, cantilever seat, main shaft, motor, driving wheel tower, driven pulley tower, feed gear shaft, the driving wheel tower that is loaded on the motor output shaft links to each other with the driven pulley tower that is loaded on the main shaft upper end by belt; The bottom of main shaft is provided with collar bush, and collar bush is provided with the tooth bar that is meshed with the feed gear shaft; It is characterized in that: also comprise delivering gear and gear, the delivering gear that comprises worm screw, worm gear, clutch gear pair, shifting fork bar, the upper end of its worm screw links to each other with main shaft through gear, the lower end of worm screw is meshed with worm gear on being placed on the feed gear shaft, the fixedly clutch gear of clutch gear pair is loaded on the middle part of worm gear, and fix with worm gear, the slide engaging and disengaging gear is loaded on the spline on the worm gear outside feed gear shaft; Be provided with spring between two clutch gears; Be provided with the shift fork fixed block that is loaded on the feed gear shaft in the outboard chambers of slide engaging and disengaging gear, be provided with several shifting fork bars on the shift fork fixed block equably, be provided with the fork slot that array is made of two half slots and bar shaped lead-over groove on the end face of the outside of slide engaging and disengaging gear, shifting fork bar is placed in the above-mentioned fork slot; The outside feed gear shaft axle head of shift fork fixed block is provided with adjusting nut, and the other end of feed gear shaft is provided with disc spring.

2, a kind of bench drill according to claim 1, it is characterized in that: on the outer surface of slide engaging and disengaging gear, be equipped with annular shift fork fixed cover, the outboard end face of shift fork fixed cover offers stopper slot corresponding to the fork slot on the slide engaging and disengaging gear, the outer surface of shift fork fixed cover is equipped with the spacing shift fork cover of opening, opening part constitutes limited block to outer lug, and links to each other by regulating bolt; On the cantilever seat, be provided with gag lever post corresponding to above-mentioned limited block.

3, a kind of bench drill according to claim 1 and 2 is characterized in that: also be equipped with dial on the outer surface of slide engaging and disengaging gear.

4, a kind of bench drill according to claim 1 is characterized in that: wheel disc, idler gear, speed change duplicate gear and driven wheel in the middle of above-mentioned gear comprises; Middle wheel disc links to each other with the driven pulley tower by belt; Fix with middle wheel disc and coaxial idler gear is meshed with the gear wheel of speed change duplicate gear, the pinion of speed change duplicate gear is meshed with the driven wheel that is loaded on the worm screw upper end.

5, a kind of bench drill according to claim 4 is characterized in that: the axle bed of middle wheel disc and idler gear fixes by the chute offered on it and bolt and cantilever seat.

6, a kind of bench drill according to claim 4 is characterized in that: the axle bed of speed change duplicate gear is fixed on the fan-shaped adjustable plate that is set in worm screw upper end, and fan-shaped adjustable plate is by the deep-slotted chip breaker offered on it and regulate bolt and the cantilever seat fixes.