CN2152624Y - Main spindle box for drilling machine - Google Patents

Abstract

The utility model discloses a spindle box for a drilling machine, which solves the technical key that the inner part of a split style speed-varying box has a motor shaft, a driving shaft, and a spindle driving shaft; the inner part of a spindle feeding box has a motor, a spindle, a retracting device, and a lifting device; the retracting device comprises a sleeve barrel whose outer wall is provided with a long groove and fixed with a rack and a press-button whose top rod and head end are inserted into the groove; the lifting device comprises a worm gear bar and a gear rack. The utility model has the advantages of easy installation, convenient maintenance, simple speed changing, easy retracting, compact structure, and flexible lifting, which is suitable for a vertical drill and a table drill.

Description

Main spindle box for drilling machine

The utility model relates to a kind of drilling head that is suitable for vertical drill and bench drill.

The gearbox of upright drill mostly is monoblock type, casting wooden model complexity, expense height, moulding difficulty, yield rate are low, mechanical processing difficulty is big, assembling is loaded down with trivial details, when withdrawing, need wedge is inserted in the groove of main shaft mohs tapered bore back, beat, withdraw from cutter with hammer, this withdrawing mode is bothersome, time-consuming, efficient is low, and the lifting of main spindle box is a lead screw transmission.Bench drill is generally belt transmission, and speed change need be opened belt housing, moves belt with hand, changes the position of belt on cone pulley, and speed change is handled loaded down with trivial details and dangerous, and belt transmission is easily skidded, and the low speed torque deficiency also is to utilize wedge during withdrawing.No matter bench drill or vertical drill, motor all are installed in the outside, structure is not compact, moulding is not attractive in appearance.

The purpose of this utility model provides a kind of installation and maintenance convenience, speed change that is suitable for vertical drill and bench drill and handles simply, is easy to withdrawing, compact conformation, lifting drilling head flexibly.

The utility model is achieved in that a kind of drilling head, be suitable for vertical drill and bench drill, comprise that gearbox and main shaft send case to, it is characterized in that having motor shaft in the gearbox of dissection type, power transmission shaft and spindle drive axle, gear and shaft gear are arranged on the motor shaft, key connects, be provided with two gears engaged of arrangement of clutch with power transmission shaft, other two gears and spindle drive axle are provided with two gears engaged of arrangement of clutch on the power transmission shaft, main shaft is sent to has motor in the case, main shaft, tool retracting device and lowering or hoisting gear, the main shaft of band mohs tapered bore and the spindle drive axle key of band item bar is connected and by bearing fixing in sleeve, tool retracting device comprises that outer wall has elongated slot and the sleeve that is fixed with tooth bar, button in push rod and the head end insertion groove, lowering or hoisting gear comprises worm and gear and rack-and-pinion.

Be described in detail the utility model below in conjunction with embodiment and accompanying drawing thereof.

Fig. 1 is that the utility model gearbox is taken away behind half casing along the cutaway view of faying face.

Fig. 2 is tool retracting device figure.

Fig. 3 is lowering or hoisting gear figure.

In conjunction with Fig. 1, the gearbox 1 of dissection type is that the two halves casing by symmetry closes and is buckled together, connect as a whole with screw, when being assembling, the benefit of this structure in half casing, carries out earlier, situation comes into plain view in the case, as gears engaged OK, have or not foul etc., install, debugging second half casing that closes again after finishing therefore have installation and maintenance characteristics easily, and casting manufacturability is good, wooden model is simple, the blank airhole is few, and the yield rate height is if the blank that casts out is through suitable machining, can reach with the same assembly precision of monoblock type casing, and assembly process process is good.Has motor shaft 13 in the gearbox 1, power transmission shaft 16 and spindle drive axle 3, axial restraint, gear 12 and a shaft gear 11 of having a nylon to make on the motor shaft 13, key connects, be provided with two gears 14 of arrangement of clutch with power transmission shaft 16,15 engagements, two other gear 9 on the power transmission shaft 16,10 are provided with two gears 4 of arrangement of clutch with spindle drive axle 3,7 engagements, have 4 pairs of gear pairs like this in the gearbox 1 altogether, one is the gear that nylon is made in every pair of gear pair, one is the steel gear, and its purpose of this collocation mode is exactly in order to reduce noise and wear-resisting.Main shaft is sent to has motor, main shaft 2, tool retracting device and lowering or hoisting gear in the case.Motor is after removing shell, stator directly is installed in the casing, like this drilling head compact conformation, handsome in appearance that just becomes.In conjunction with Fig. 2, the main shaft 2 of band mohs tapered bore and be with spindle drive 3 key of push rod 19 to be connected and by bearing fixing in sleeve 17, it is matched in clearance that sleeve 17 is sent case to main shaft, tool retracting device comprises that outer wall has elongated slot and the interior button 18 of the sleeve 17, push rod 19 and the head end insertion groove that are fixed with tooth bar 20, tooth bar 20 on the sleeve 17 be fixed on the gear 21 that main shaft sends on the box body and cooperate, this gear 21 is moving by handle, the hand handle, gear 21 is passed to tooth bar 20 with power, and sleeve 17 slides up and down along casing.Under the cutter duty, button 18 head ends insert in sleeve 17 grooves, can limit sleeve 17 and upwards slide, and at this moment, push rod 19 does not contact with cutter, when needs unload bottom tool, transfers to button 18.Eliminated its position-limiting action, the hand handle upwards slides sleeve 17, and when push rod 19 was run into cutter, cutter was just launched in mohs tapered bore, thereby withdrawing is easy, not by other aid.In conjunction with Fig. 3, lowering or hoisting gear comprises worm gear 25 worm screws 26 and tooth bar 23, and tooth bar 23 is fixed on the column 22, and is coaxial with worm gear 25 with tooth bar 23 meshed gears 24, and worm gear 25 is driven by worm screw 26, and handle 27 drives worm screw 26.Thereby the main spindle box lifting is flexible.

Be provided with arrangement of clutch two gears and the axle between have bearing, on opposing end faces, be fixed with interior 12 jiaos of gear rings 5, promptly a gear riveted has 12 jiaos of gear rings 5 in, has outer-hexagonal gear shift seat 6 between 12 jiaos of gear rings 5 in two, be connected with key between the axle, shift fork 8 inserts in the circumferential recess at hexagonal gear shift seat 6 middle parts, outside gearbox 1, stir gear change hand lever, promote shift fork, outer-hexagonal gear shift seat 6 is moved vertically with 12 jiaos of gear rings 5 in one of them to be engaged, in conjunction with gear power is passed to axle, the gear of separation dallies on axle, thus one the cover arrangement of clutch can produce two kinds of rotating speeds, be provided with two cover arrangement of clutch in the gearbox of present embodiment, then can produce four kinds of rotating speeds, if adopt double-speed motor, then this gearbox can be realized 8 kinds of speed changes.

The part that button 18 penetrates dome has one section groove vertically, and radially in the insertion groove, dome is to be fixed on main shaft with rivet to send case to pin along dome, on the casing, button 18 can be pressed and transfer to easily, and pin limits the scope of activities of button, prevents that button from being dialled down.

The utility model has adopted the gearbox of dissection type, presses dress, debugging, easy to maintenance, and casting technique, assembly technology are all fine; Utilize gear change hand lever to stir shift fork, mobile hexagonal gear shift seat can carry out speed change easily and reliably; Main shaft is sent to and is provided with tool retracting device and lowering or hoisting gear in the case, can be convenient to withdrawing, and laborsaving again during joint, the main spindle box lifting is flexible; The gear that has adopted nylon to make has reduced noise and has improved wearability; Motor is arranged in the case, makes compact integral structure, handsome in appearance.

Claims (3)

1, a kind of drilling head, be suitable for vertical drill and bench drill, comprise that gearbox and main shaft send case to, it is characterized in that having motor shaft 13 in the gearbox 1 of dissection type, power transmission shaft 16 and spindle drive axle 3, gear 12 and wheel axle gear 11 are arranged on the motor shaft 13, key connects, be provided with two gears 14 of arrangement of clutch with turning cylinder 16,15 engagements, two other gear 9 on the power transmission shaft 16,10 are provided with two gears 4 of arrangement of clutch with spindle drive axle 3,7 engagements, main shaft is sent to has motor in the case, main shaft 2, tool retracting device and lowering or hoisting gear, the main shaft 2 of band mohs tapered bore and be with spindle drive axle 3 keys of push rod 19 to be connected and by bearing fixing in sleeve 17, tool retracting device comprises that outer wall has elongated slot and the sleeve 17 that is fixed with tooth bar 20, button 18 in push rod 19 and the head end insertion groove, lowering or hoisting gear comprises worm gear 25 worm screws 26 and gear 24 tooth bars 23.

2, according to the described drilling head of claim 1, it is characterized in that being provided with between two gears of arrangement of clutch and the axle and have bearing, on opposing end faces, be fixed with interior 12 jiaos of gear rings 5, has outer-hexagonal gear shift seat 6 between 12 jiaos of gear rings 5 in two, be connected with axle key, shift fork 8 inserts in the circumferential recess at hexagonal gear shift seat 6 middle parts.

3, according to claim 1 or 2 described drilling heads, it is characterized in that the part that button 18 penetrates dome has one section groove vertically, pin is along dome radially in the insertion groove.

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