CN2259247Y

CN2259247Y - Bench drilling machine

Info

Publication number: CN2259247Y
Application number: CN 96244176
Authority: CN
Inventors: 李忠文
Original assignee: Individual
Current assignee: Li Zhonglian
Priority date: 1996-11-21
Filing date: 1996-11-21
Publication date: 1997-08-13
Anticipated expiration: 2006-11-21

Abstract

The bench drilling machine of the utility model, besides having the general structure of the bench drilling machine, is provided with a spindle mounting arm, wherein, the spindle mounting arm is arranged on the top part of an upright post and is composed of a mounting arm supporting seat, a spindle rotating head, a rotating head driving shaft, a moving arm, and a spindle provided with an arm moving mechanism and a rotary mechanism of a spindle rotating head. The utility model is also provided with a micro feed mechanism forming interlocking with a straight reciprocating motion mechanism of a sleeve of the spindle, wherein, the micro feed mechanism is composed of a worm rod, a tapered sheath, a worm wheel, a push-pull rod, and a hand wheel shaft. According to the characteristics, the bench drilling machine can be both vertically drilling and inclined drilling. The utility model is characterized in that the spanning borehole of porous positions can be realized, the bench drilling machine has both the milling and the cutting functions. As a result, the utility model is a multifunctional bench drilling machine.

Description

Bench drill

The utility model relates to a kind of bench drill.

Bench drill mainly is made up of chassis, column, work stage, main shaft hold-down arm, main shaft, rack sleeve, main shaft speed change drive unit and rack sleeve linear reciprocating mechanism, because its main-shaft axis is vertical with the chassis forever, so main shaft only can be done the straight reciprocating motion of vertical direction except rotating, in addition, main shaft immobilizes again with the centre-to-centre spacing between the column, therefore known bench drill only can be processed the upright opening of some minor diameters to small workpiece, and its purposes is very single.

The purpose of this utility model provides a kind of multi-functional bench drill.

Solution of the present utility model is that described main shaft hold-down arm is by the hold-down arm supporting base, the main shaft rotary head, the rotary head power transmission shaft, transfer arm, main shaft hold-down arm travel mechanism and main shaft rotary head rotating mechanism are formed, wherein the hold-down arm supporting base is bearing in the top of column, the rotary head driving sleeve is loaded in the axis hole that is located at the hold-down arm supporting base, its front end is connected with the main shaft rotary head with the cooperation of transfer arm hole axle, the rear end connects with the motor bearing plate, main shaft hold-down arm travel mechanism is made up of the tooth bar that is arranged on the gear in the transfer arm and be arranged on the hold-down arm supporting base, and main shaft rotary head rotating mechanism is formed by being arranged on the worm screw on the hold-down arm supporting base and being sleeved on the rotary head power transmission shaft and with the worm gear that rotary head power transmission shaft feather key cooperates.

Further illustrate detailed content of the present utility model below in conjunction with drawings and Examples.

Fig. 1: side direction sketch of the present utility model;

Fig. 2: the structure diagram of main shaft hold-down arm;

Fig. 3: the structure chart of fine feed mechanism worm gear part;

Fig. 4: the structure chart of fine feed mechanism worm screw part.

As shown in the figure, bench drill described in the utility model also has chassis 1, column 2, work stage 41, the main shaft hold-down arm, main shaft 3, rack sleeve 4, main shaft speed change drive unit and rack sleeve linear reciprocating mechanism, wherein the main shaft speed change drive unit is by motor 5, drive pulley 6, negative pulley wheel 7 and driving belt 8 are formed, the rack sleeve linear reciprocating mechanism is by being arranged on the tooth bar 9 on the rack sleeve 4 and forming with the driven wheel 10 of this tooth bar 9 engagements, its principal character is that described main shaft hold-down arm is by hold-down arm supporting base 11, main shaft rotary head 12, rotary head power transmission shaft 13, transfer arm 4, main shaft hold-down arm travel mechanism and main shaft rotary head rotating mechanism are formed, wherein hold-down arm supporting base 11 is bearing in the top of column 2, rotary head power transmission shaft 13 is set in the axis hole that is located at hold-down arm supporting base 11, its front end is connected with the main shaft rotary head 12 with transfer arm 4 hole axles cooperations, the rear end connects with motor bearing plate 15, main shaft hold-down arm travel mechanism forms by being arranged on gear 16 in the transfer arm 14 and the tooth bar 17 that is arranged on the hold-down arm supporting base 11, and main shaft rotary head rotating mechanism is formed by being arranged on the worm screw 18 on the hold-down arm supporting base 11 and being sleeved on the rotary head power transmission shaft 13 and with the worm gear 19 that rotary head power transmission shaft 13 feather keys cooperate.Universal design according to lathe, with the parts that transfer arm 4 forms relative motion dial 20 is set at main shaft rotary head 12, can grasp the rotational angle of main shaft rotary head 12, the retaining mechanism of clamping hoop type is set on transfer arm 14 simultaneously, main shaft rotary head 12 after rotating is locked, and the handwheel 21 among Fig. 1 is the locking handwheel of this retaining mechanism; Transfer arm 4 also should be provided with retaining mechanism, and adopt the screw rod be installed on the hold-down arm supporting base 11 will be inlaid in the mode that the slide block tension in the chute on the rotary head power transmission shaft 13 is pressed on the runner wall slide block to lock transfer arm 14, the handwheel 22 among Fig. 1 is the locking handwheel of this retaining mechanism; Because transfer arm 14 is moving members, therefore on the position that transfer arm 14 stretches out for the operation handwheel 38 of locking handwheel 22 and worm screw 18, elongated slot 23 and elongated slot 24 to be set; For the connected mode of motor bearing plate 15 with rotary head power transmission shaft 13, present embodiment is provided with the bolster 25 that cooperates with rotary head power transmission shaft 13 hole axles on motor bearing plate 15, and this bolster 25 adopted groove pin ways of connecting with rotary head power transmission shaft 13, and suit belt pulley tensioning spring 27 in the support holes 26.In order to make the function that the utlity model has milling, fine feed mechanism can further be set, this mechanism is by the worm screw 28 that is installed on the main shaft rotary head 12, the taper sheath 30 that is sleeved on the driving shaft 29 of driven wheel 10 of rack sleeve linear reciprocating mechanism and connects with driving shaft 29 groove pins, endoporus is connected pull bar 34 compositions that the other end is threaded with hand wheel shaft 33 with taper sheath 30 taper fit and with an end in the worm gear 31 of worm screw 28 engagement and the endoporus that are sleeved on driving shaft 29 with the connecting pin 32 of taper sheath 30, this fine feed mechanism forms interlocked relationship with the rack sleeve linear reciprocating mechanism, promptly work as taper sheath 30 with worm gear 31 loose timings, the worm and gear transmission is thrown off with driving shaft 29, when taper sheath 30 during with worm gear 31 close-fittings, the worm and gear transmission changes driven wheel 10 into the rack-and-pinion transmission between the tooth bar on the rack sleeve 49 by driving shaft 29, makes main shaft 3 do the fine feed motion; In like manner, the retaining mechanism of the rack sleeve 4 of clamping hoop type should be set correspondingly also on the main shaft rotary head 12, the handwheel 35 among Fig. 1 is the locking handwheel of this retaining mechanism.The worm shaft of the gear shaft of said gear 16 and worm screw 18 can stretch out from the both sides of transfer arm 14 simultaneously, locking handwheel 22 and collar bush the operation handwheel 36 in the line reciprocating mechanism simply also can be provided with in the both sides of transfer arm 4 and main shaft rotary head 12 respectively simultaneously, present embodiment also is provided with cone clutch between left-hand operation handwheel 36 is with main shaft back-moving spring dish 40, with clamp nut 39 left-hand operation handwheel 36 is compressed combination with main shaft back-moving spring dish 40,4 of rack sleeves can upwards reset automatically, when milling, then cone clutch must be separated.Because main shaft hold-down arm of the present utility model is arranged on the top of column 2, in order to adjust the relative altitude of main shaft hold-down arm with chassis 1, the utility model is designed to lift with column 2, and the upright column elevator structure of pinion and-rack is set, and the turning handle 37 among Fig. 1 is the operating grip of this elevating mechanism.

After the bench drill of said structure is provided with the main shaft rotary head, but make both vertical drills of bench drill, can tiltedly bore again, after transfer arm is set, make bench drill realize the leap boring of multi-hole position, the fine motion delivering gear is set after, make bench drill have the function of milling concurrently, therefore, the utility model is a kind of multi-functional bench drill.

Claims

1, a kind of bench drill, has the chassis, column, work stage, the main shaft hold-down arm, main shaft, rack sleeve, main shaft speed change drive unit and rack sleeve linear reciprocating mechanism, wherein the main shaft speed change drive unit is by motor, drive pulley, negative pulley wheel and driving belt are formed, the rack sleeve linear reciprocating mechanism is by being arranged on the tooth bar on the rack sleeve and forming with the driven wheel of this tooth bar engagement, it is characterized in that: described main shaft hold-down arm is by hold-down arm supporting base (11), main shaft rotary head (12), rotary head power transmission shaft (13), transfer arm (4), main shaft hold-down arm travel mechanism and main shaft rotary head rotating mechanism are formed, wherein hold-down arm supporting base (11) is bearing in the top of column (2), rotary head power transmission shaft (13) is set in the axis hole that is located at hold-down arm supporting base (11), its front end is connected with the main shaft rotary head (12) with the cooperation of transfer arm (4) hole axle, the rear end connects with motor bearing plate (15), main shaft hold-down arm travel mechanism forms by being arranged on gear (16) in the transfer arm (14) and the tooth bar (17) that is arranged on the hold-down arm supporting base (11), and main shaft rotary head rotating mechanism upward and with the worm gear (19) that rotary head power transmission shaft (13) feather key cooperates is formed by being arranged on the worm screw (18) on the hold-down arm supporting base (11) and being sleeved on rotary head power transmission shaft (13).

2, bench drill according to claim 1 is characterized in that: be provided with by the worm screw (28) that is installed on the main shaft rotary head (12), be sleeved on the taper sheath (30) that driving shaft (29) is gone up and same driving shaft (29) groove pin connects of the driven wheel (10) of rack sleeve linear reciprocating mechanism, the worm gear (31) of the same taper sheath of endoporus (30) taper fit and same worm screw (28) engagement is connected the fine motion delivering gear of pull bar (34) composition that the same hand wheel shaft of the other end (33) is threaded with the connecting pin (32) of the same taper sheath of an end (30) in the endoporus that is sleeved on driving shaft (29).