CN201161322Y

CN201161322Y - Desk type bearing transmission threading machine

Info

Publication number: CN201161322Y
Application number: CNU2007200564245U
Authority: CN
Inventors: 甘增兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-31
Filing date: 2007-08-31
Publication date: 2008-12-10
Anticipated expiration: 2017-08-31

Abstract

The utility model relates to the mechanical work field, in particular to a bench bearing driving tapping machine which comprises a main post, an electric motor, a raising worktable, a reducer, a main shaft box and a main shaft. The bench bearing driving tapping machine is characterized in that a transmission chain wheel and the main shaft are not driven by a spline; two rows of rolling bearings are arranged in a square groove arranged above the transmission chain wheel, the flat square end of the main shaft inserts into a space formed between the two rows of rolling bearings, and the main shaft is cooperated with the transmission chain wheel in a rolling way; the main shaft is connected with a scroll chuck, the circumference of which is additionally provided with three equant locking screws; a self-centering cross saddle is arranged on the worktable, and the vertical saddle and the cross saddle are not provided with the transmission screw mandrel. The bench bearing driving tapping machine has the advantages that the pulling force between a screw tap and a workpiece in tapping can be removed, the processing range is wide, a left screw thread is not limited, the determination of the center line of the screw tap is easy, the cost is low and the production is easy.

Description

A kind of desk-top bearing transmission tapping machine

Technical field:

The utility model relates to field of machining, particularly a kind of desk-top bearing transmission tapping machine.

Background technology:

Present machining equipment field, mainly contain following several tapping machine: frictional disk disengaging type tapping machine, gear type tooth are apart from tapping machine, guide screw rod-type tapping machine, and common drilling and taping machine.Need in the frictional disk disengaging type tapping machine course of work to press down with hand is past energetically, operating personnel are more arduous, and for the big slightly workpiece of pitch, its belt and clutch discs are often skidded, and tapping has some setbacks, and the range of work is little; The gear type tooth is apart from the workpiece of tapping machine for different pitch, gear changing more, and special pitch and left-hand thread tapping all are difficult for realizing; Guide screw rod-type tapping machine will be changed screw rod and nut for the workpiece for different pitch, and is more inconvenient during the tapping line; Common drilling and taping machine is owing to adopt the spline transmission between drive and the main shaft, when tapping produces large drag forces, along with producing very big force of sliding friction between descending main shaft of screw tap pitch constant speed and the spline, also produce very big pulling force between screw tap and the workpiece, cause screw thread often to be pulled, even drawing badly, the workpiece softer for material is difficult for tapping.

The utility model content:

The utility model is at the prior art deficiency, and the spy provides a kind of desk-top bearing transmission tapping machine, its reasonable in design, easy to use, easy production, the pulling force in the time of eliminating tapping.

For reaching above-mentioned purpose, the technical scheme that the utility model is taked is: it comprises principal post, motor, self-powered platform, reductor, main spindle box and main shaft, motor and speed reducer is installed in both sides, main spindle box back upper place respectively, main shaft is arranged in the main spindle box, the main shaft top is socketed with drive sprocket, the drive sprocket lower end is installed in the dead eye position of main spindle box top by bearing, it is characterized in that: drive sprocket top offers square groove, be provided with the bearing transmission device in the square groove, the bearing transmission device is by rolling bearing, bearing pin constitutes, two row's rolling bearings are fixed in the square groove of drive sprocket by bearing pin, the main shaft upper end is a deltiod, and a left side is inserted in the main shaft upper end, in the formed space of right two row's rolling bearings.

Be connected by belt between motor and the reductor, be connected by chain between reductor and the drive sprocket.

Described rolling bearing is installed in the bearing holder (housing, cover), and is equiped with two rolling bearings in each bearing holder (housing, cover), and the main shaft both sides in square groove are equiped with the upper and lower two-layer bearing holder (housing, cover) that rolling bearing is housed respectively.

On the periphery of three-jaw self-centering chuck, be that the tapped through hole that is shaped on three five equilibriums is attacked at the center with the intersection point of the radial centre lines of the center line of the groove of claw and claw.

The self-centering cross saddle is installed on the described self-powered platform, the self-centering cross saddle comprises base, cross slide and vertical planker, base offers cross slide way, cross slide is placed on the guide rail of base, the cross slide upper surface offers longitudinal rail, and vertical planker is placed on the longitudinal rail of cross slide.

The beneficial effects of the utility model are: reducing gear is simple in structure, and is stable; During tapping, when producing big torsion between drive sprocket and main shaft, along with not producing sliding friction between descending main shaft of screw tap pitch constant speed and the drive sprocket, but a kind of rolling friction, so, can not produce pulling force between screw tap and the workpiece, tapping effect is very desirable, and is not subjected to materials limitations; Three-jaw self-centering chuck, good concentricity, chucking power is big, and clamping range is wide, need not the chuck of all size, and screw tap, the reamer of special requirement are unrestricted, in addition, can realize the screw die of clamping all size easily in conjunction with anti-claw; The self-centering cross saddle can be found the tapping position easily and quickly accurately, especially when having some identical holes to need tapping on the batch workpiece of clamping standard incomplete same (being casting) or the same workpiece as the clamping face, its advantage is more obvious, and when the screw tap rotation has when radially wobbling slightly, workpiece can be swung naturally along with screw tap, automatically eliminate produce because of the screw tap swing and workpiece between stress, make tapping effect unaffected.

Description of drawings:

Fig. 1 is a vertical view of the present utility model;

Fig. 2 is a cutaway view of the present utility model;

Fig. 3 is the structural representation of the utility model three-jaw self-centering chuck;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is the A-A cutaway view of Fig. 2;

Fig. 6 is the partial sectional view of the utility model bearing holder (housing, cover);

Fig. 7 is the structural representation of the utility model main shaft;

Fig. 8 is the cutaway view of the utility model main shaft guide pin bushing;

Fig. 9 is the structural representation of the utility model self-centering cross saddle;

The specific embodiment:

See shown in Fig. 1 to 9, the utility model comprises principal post 4, motor 2, self-powered platform 5, reductor 6, main spindle box 3 and main shaft 15, motor 2 and reductor 6 are installed in both sides, main spindle box 3 back upper place respectively, motor 2 is fastened on the motor cabinet 21, the upper end of motor cabinet 21 is connected by hinge 22 with the upper end of main spindle box 3, making motor cabinet 21 can be that circular motion is done at the center with the axle of hinge 22, the degree of tightness that can regulate belt 101 between motor 2 and the reductor 6 by the adjusting screw(rod) 23 between motor cabinet 21 lower ends and main spindle box 4 lower ends, overload protection during with the realization tapping, main shaft 15 is arranged in the main spindle box 3, main shaft 15 tops are socketed with drive sprocket 11, drive sprocket 11 lower ends are installed in the dead eye position of main spindle box 3 tops by bearing 16, be connected by chain 102 between reductor 6 and the drive sprocket 11, drive sprocket 11 tops offer square groove 100, be provided with bearing transmission device 1 in the square groove 100, bearing transmission device 1 is by rolling bearing 12, bearing holder (housing, cover) 13, bearing pin 14 constitutes, eight rolling bearings 12 are packed in four bearing holder (housing, cover)s 13 in twos, bearing holder (housing, cover) 13 divides two-layer up and down again, about two row be fixed in the square groove 100 of drive sprocket 11 by bearing pin 14, main shaft 15 upper ends are deltiod, and a left side is inserted in main shaft 15 upper ends, in right two row's bearing holder (housing, cover)s 13 formed spaces; Main shaft 15 lower ends are connected with three-jaw self-centering chuck 7.

Be provided with main shaft guide pin bushing 41 in the main spindle box 3, main shaft 15 is socketed in the main shaft guide pin bushing 41, be respectively equipped with bearing 16 in main shaft guide pin bushing 41 upper/lower terminals, main shaft guide pin bushing 41 surfaces are provided with straight-tooth 103, main spindle box 3 is provided with manual gear 104 and straight-tooth 103 engagements, can make the 41 upper and lower motions of main shaft guide pin bushing, the i.e. upper and lower motion of screw tap by handle 105 transmission manual gears 104.

On the periphery of three-jaw self-centering chuck 7, be that the tapped through hole 72 that is shaped on three five equilibriums is attacked at the center with the intersection point of the radial centre lines of the center line of the groove of claw 71 and claw 71, when the little screw tap of clamping, only need claw 71 lockings are got final product; When screw tap is big, after claw 71 lockings, again with the locking of the hexagonal grub screw in the tapped through hole 72.

On the described self-powered platform 5 self-centering cross saddle 51 is installed, self-centering cross saddle 51 comprises base 511, cross slide 512 and vertical planker 513, base 511 offers cross slide way, cross slide 512 is placed on the guide rail of base 511, cross slide 512 upper surfaces offer longitudinal rail, and vertical planker 513 is placed on the longitudinal rail of cross slide 512, and cross slide 512 and vertical planker 513 are equipped with locking device 514, do not establish drive lead screw, can promote gently with hand.During tapping, the hole that cross slide 512 and vertical planker 513 is pushed into the required processing of workpiece is probably aimed at screw tap, presses down manual gear 104, makes screw tap just run into the limit, hole, the hole of screw tap and workpiece promptly finds the center automatically, presses positive turn-off and closes screw tap and press down gently and promptly begin self-tapping.

Circuit of the present utility model is the common circuit that comes and goes automatically, is provided with a total power switch, and a positive turn-off closes a urgent reversal switch and a counter-rotating travel switch.

The above embodiment, it is preferred embodiments of the present utility model, be not to limit the utility model practical range,, all should comprise in the utility model patent claim so all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify.

Claims

1, a kind of desk-top bearing transmission tapping machine, it comprises principal post (4), motor (2), self-powered platform (5), reductor (6), main spindle box (3) and main shaft (15), motor (2) and reductor (6) are installed in main spindle box (3) both sides, back upper place respectively, main shaft (15) is arranged in the main spindle box (3), main shaft (15) top is socketed with drive sprocket (11), drive sprocket (11) lower end is installed in the dead eye position of main spindle box (3) top by bearing (16), it is characterized in that: drive sprocket (11) top offers square groove (100), be provided with bearing transmission device (1) in the square groove (100), bearing transmission device (1) is by rolling bearing (12), bearing pin (14) constitutes, two row's rolling bearings (12) are fixed in the square groove (100) of drive sprocket (11) by bearing pin (14), main shaft (15) upper end is a deltiod, and a left side is inserted in main shaft (15) upper end, in the formed space of right two row's rolling bearings (12); Main shaft (15) lower end is connected with three-jaw self-centering chuck (7).

2, a kind of desk-top bearing transmission tapping machine according to claim 1 is characterized in that: be connected by belt (101) between motor (2) and the reductor (6), be connected by chain (102) between reductor (6) and drive sprocket (11).

3, a kind of desk-top bearing transmission tapping machine according to claim 1, it is characterized in that: described rolling bearing (12) is installed in the bearing holder (housing, cover) (13), and be equiped with two rolling bearings (12) in each bearing holder (housing, cover) (13), main shaft (15) both sides in square groove (100) are equiped with the upper and lower two-layer bearing holder (housing, cover) (13) that rolling bearing (12) are housed respectively.

4, a kind of desk-top bearing transmission tapping machine according to claim 1, it is characterized in that: on the periphery of three-jaw self-centering chuck (7), be that the tapped through hole (72) that is shaped on three five equilibriums is attacked at the center with the intersection point of the radial centre lines of the center line of the groove of claw (71) and claw (71).

5, a kind of desk-top bearing transmission tapping machine according to claim 1, it is characterized in that: self-centering cross saddle (51) is installed on the described self-powered platform (5), self-centering cross saddle (51) comprises base (511), cross slide (512) and vertical planker (513), base (511) offers cross slide way, cross slide (512) is placed on the guide rail of base (511), cross slide (512) upper surface offers longitudinal rail, and vertical planker (513) is placed on the longitudinal rail of cross slide (512).