CN217571003U

CN217571003U - Stepless speed regulation bench drill

Info

Publication number: CN217571003U
Application number: CN202123184447.3U
Authority: CN
Inventors: 高汉华
Original assignee: Wuxi Institute of Commerce
Current assignee: Wuxi Institute of Commerce
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-10-14
Anticipated expiration: 2031-12-17

Abstract

A stepless speed regulation bench drill comprises a base, a support table and an upright post fixedly connected to the base, wherein a first sleeve is arranged at the left end of the support table, the lower part of a main shaft is inserted into the support table through the first sleeve, and two conical discs are sequentially sleeved on the upper part of the main shaft to form a large belt wheel; the lateral wall is provided with the dovetail on the right-hand member of brace table, is provided with the slider rather than sliding connection on the dovetail, and the slider right side is connected with motor fixed connection, and the pot head is equipped with little band pulley on the motor, big band pulley passes through the drive belt with little band pulley and is connected. The utility model discloses troublesome and the limited old-fashioned bench drill of speed governing scope of speed governing has improved, has designed a stepless speed governing bench drill easy operation, the wide of speed governing scope.

Description

Stepless speed regulation bench drill

Technical Field

The utility model belongs to the technical field of the technique of metal cutting equipment and specifically relates to a stepless speed governing bench drill is related to.

Background

The metal cutting apparatus includes: lathe equipment, milling machine equipment, planer equipment, slotting machine equipment, boring machine equipment, grinding machine equipment, drilling machine equipment and tooth-shaped equipment. The drilling machine is a universal machine tool with wide application, and can be used for drilling, reaming a plane, tapping and the like on parts. The types of drilling machines are mainly: upright drills, bench drills, rocker arm drills, horizontal drills, and the like. Among them, the bench drill is mostly an old bench drill used in the Chinese market. The speed regulation of the old bench drill depends on several groups of tower type belt wheel discs with fixed diameters, and the transmission ratio of belt transmission is calculated according to the requirement of the rotating speed of a drill hole. Thus selecting proper belt wheel and driving belt to change the rotation speed of the drilling hole. Therefore, every time of speed regulation, the belt is required to be disassembled and assembled to recombine the belt for transmission, and the speed regulation is very troublesome. And because the number of belt wheels is limited, the adjustable speed range of the drilling machine is limited. Therefore, the old bench drill which is troublesome in speed regulation and limited in speed regulation range is improved, and the bench drill capable of stepless speed regulation is designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stepless speed regulation bench drill to solve the trouble and the limited technical problem of speed governing scope of old-fashioned bench drill speed governing.

In order to achieve the above object, the utility model discloses a specific technical scheme of electrodeless speed governing bench drill as follows:

a stepless speed regulation bench drill comprises a base, a supporting table and an upright post fixedly connected to the base, wherein a first sleeve is arranged at the left end of the supporting table, the lower part of a main shaft is spliced with the supporting table through the first sleeve, and a first conical disc and a second conical disc are sequentially sleeved at the upper part of the main shaft to form a large belt wheel; the lateral wall is provided with the dovetail on the right-hand member of brace table, is provided with the slider rather than sliding connection on the dovetail, and the slider right side is connected with motor fixed connection, and the pot head is equipped with little band pulley on the motor, big band pulley passes through the drive belt with little band pulley and is connected.

Further, the middle part of brace table is provided with the second sleeve, and the stand passes through second sleeve and brace table sliding connection, can adjust the relative distance of base and brace table through the slip of the vertical direction of brace table to satisfy the drilling demand of not co-altitude part.

Furthermore, a rack is fixedly connected to the sliding block and meshed with a gear shaft to form gear-rack transmission so as to drive the sliding block to slide left and right.

Furthermore, the right side of the sliding block is provided with a side plate with a mounting hole, and the motor is fixedly connected to the side plate through a second screw, a second gasket and a nut.

Furthermore, a spline shaft and threads are arranged on the upper portion of the main shaft, and the first conical disc and the second conical disc are sequentially sleeved on the upper portion of the main shaft through spline connection.

Furthermore, the gear shaft sleeve is inserted into the bearing seat above the dovetail groove, the bearing seat on the front side of the dovetail groove is fixedly connected with the dovetail groove, and the bearing seat on the rear side of the dovetail groove is split and consists of a bearing cover and a first screw.

Furthermore, the rear end of the gear shaft is fixedly connected with a knob, and the gear shaft can rotate along with the knob by rotating the knob, so that the rack and the sliding block are pushed to move left and right, and the motor and the small belt pulley which are fixedly connected to the sliding block move left and right simultaneously. In the adjusting process, the axial line position of the large belt wheel is unchanged, the motor and the small belt wheel move left and right, and the transmission center distance of the belt is changed, so that the tightness degree of the transmission belt is changed, and the pressure applied to the large belt wheel and the small belt wheel is changed.

Furthermore, a compression spring, a first gasket and a compression nut are sequentially sleeved above the second conical disc.

Further, the compression nut can be unscrewed, so that the pressure of the compression spring at the upper end of the second conical disc is reduced; the narrow ports of the first conical disc and the second conical disc are mutually abutted when the compression nut is screwed, when the pressure applied to the first conical disc and the second conical disc by the transmission belt is greater than the pressure of the compression spring, the first conical disc and the second conical disc are separated along the axial direction, the transmission belt slides along the radial direction between the large belt wheel consisting of the first conical disc and the second conical disc, so that the action diameter of the large belt wheel is reduced, and the action positions of the transmission belt and the large belt wheel consisting of the first conical disc and the second conical disc are changed along with the change of the action positions, so that the transmission ratio of belt transmission is changed, and the purpose of adjusting the rotating speed of the drilling machine is achieved.

Furthermore, a flat key is arranged at the upper end of the small belt pulley to axially fix the small belt pulley on the motor.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a electrodeless speed governing bench drill is after the pine compresses tightly the nut soon, rotates the knob and can make the gear shaft rotate thereupon to control about promoting rack and the slider, control the removal simultaneously with the miniband wheel of motor of fixed connection on the slider. In the adjusting process, as the axle line position of the large belt wheel is unchanged, the motor and the small belt wheel move left and right, and the transmission center distance of the belt is changed, so that the tightness degree of the transmission belt is changed, and the pressure applied to the large belt wheel and the small belt wheel is changed; when the pressure applied by the transmission belt to the first conical disc and the second conical disc is larger than the pressure of the compression spring, the first conical disc and the second conical disc are separated along the axial direction, the transmission belt slides along the radial direction between the large belt wheel consisting of the first conical disc and the second conical disc, so that the action diameter of the large belt wheel is reduced, and the action position of the transmission belt and the large belt wheel consisting of the first conical disc and the second conical disc is changed along with the reduction of the action diameter of the large belt wheel, so that the transmission ratio of belt transmission is changed, and the purpose of adjusting the rotating speed of the drilling machine is achieved. And the old-fashioned bench drill speed governing need rely on several groups of tower belt pulley discs of fixed diameter, according to the requirement of drilling rotational speed, calculates belt drive's drive ratio, selects suitable band pulley and drive belt, changes the rotational speed of drilling, and the speed governing of every turn all needs the dismouting belt to reorganize the belt drive, and is very troublesome, because band pulley quantity is limited, old-fashioned drilling machine adjustable speed's scope is also very limited. And the utility model discloses a stepless speed regulation bench drill can adjust the drive ratio of belt drive at any time according to the size of the required different rotational speeds of drilling in the use, realizes belt drive's stepless speed regulation, satisfies different drilling speed's needs. Therefore, the utility model discloses an electrodeless speed regulation bench drill can be simple high-efficient and safety more when the speed governing, and the speed governing scope also becomes in succession and wide.

Drawings

FIG. 1 is an assembly view of the present invention;

fig. 2 is an exploded view of the present invention;

FIG. 3 is a front view of the present invention;

fig. 4 is a top view of the present invention;

the notation in the figure is: 1. a base; 2. a column; 3. a main shaft; 4. a first conical disk; 5. a second conical disk; 6. a compression spring; 7. a first gasket; 8. a compression nut; 9. a transmission belt; 10. a support table; 11. a gear shaft; 12. a first screw; 13. a bearing cap; 14. a knob; 15. a flat bond; 16. a small belt pulley; 17. a motor; 18. a rack; 19. a second screw; 20. a slider; 21. a second gasket; 22. And a nut.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following figures are combined to describe the stepless speed-adjusting bench drill in further detail.

Referring to fig. 1-4, the present invention provides a technical solution: a stepless speed regulation bench drill comprises a base 1, a supporting table 10 and an upright post 2 fixedly connected to the base 1, wherein a first sleeve is arranged at the left end of the supporting table 10, the lower part of a main shaft 3 is spliced with the supporting table 10 through the first sleeve, and a first conical disc 4 and a second conical disc 5 are sequentially sleeved on the upper part of the main shaft 3 to form a large belt wheel; the lateral wall is provided with the dovetail on the right-hand member of brace table 10, is provided with slider 20 rather than sliding connection on the dovetail, and slider 20 right side and motor 17 fixed connection, motor 17 upper end cover are equipped with little band pulley 16, big band pulley passes through drive belt 9 with little band pulley 16 and is connected.

Further, the middle part of brace table 10 is provided with the second sleeve, and stand 2 passes through second sleeve and brace table 10 sliding connection, can adjust the relative distance of base 1 and brace table 10 through the slip of the vertical direction of brace table 10 to satisfy the drilling demand of not co-altitude part.

Further, a rack 18 is fixedly connected to the sliding block 20, and the rack 18 is meshed with the gear shaft 11 to form rack-and-pinion transmission to drive the sliding block 20 to slide left and right.

Further, a side plate with a mounting hole is arranged on the right side of the sliding block 20, and the motor 17 is fixedly connected to the side plate through a second screw 19, a second gasket 21 and a nut 22.

Furthermore, the upper part of the main shaft 3 is provided with a spline shaft and a thread, and the first conical disc 4 and the second conical disc 5 are sequentially sleeved on the upper part of the main shaft 3 through spline connection.

Further, the gear shaft 11 is inserted in a bearing seat above the dovetail groove, the bearing seat on the front side of the dovetail groove is fixedly connected with the dovetail groove, and the bearing seat on the rear side of the dovetail groove is split and consists of a bearing cover 13 and a first screw 12.

Further, the rear end of the gear shaft 11 is fixedly connected with a knob 14, and the gear shaft 11 can rotate along with the knob 14 by rotating the knob, so that the rack 18 and the slider 20 are pushed to move left and right, and the motor 17 and the small belt wheel 16 which are fixedly connected to the slider 20 move left and right simultaneously. In the adjusting process, as the position of the axle of the large belt wheel is unchanged, the motor 17 and the small belt wheel 16 move left and right, the center distance of belt transmission is changed, and the tightness degree of the transmission belt 9 is changed, so that the pressure applied to the large belt wheel and the small belt wheel 16 is changed.

Further, a compression spring 6, a first gasket 7 and a compression nut 8 are sequentially sleeved above the second conical disc 5.

Further, the compression nut 8 can be unscrewed, so that the pressure of the compression spring 6 at the upper end of the second conical plate 5 is reduced; the narrow ports of the first conical disc 4 and the second conical disc 5 are mutually abutted when the compression nut 8 is screwed, when the pressure applied to the first conical disc 4 and the second conical disc 5 by the transmission belt 9 is greater than the pressure of the compression spring 6, the first conical disc 4 and the second conical disc 5 are separated along the axial direction, the transmission belt slides along the radial direction between the large belt wheels consisting of the first conical disc 4 and the second conical disc 5, so that the action diameter of the large belt wheels is reduced, and the action positions of the transmission belt 9, the first conical disc 4 and the second conical disc 5 are changed along with the change of the action positions, so that the transmission ratio of belt transmission is changed, and the purpose of adjusting the rotating speed of the drilling machine is achieved.

Further, a flat key 15 is arranged at the upper end of the small belt wheel 16, and the small belt wheel 16 is axially fixed on the motor 17.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. A stepless speed regulation bench drill is characterized in that: the device comprises a base (1), a supporting table (10) and an upright post (2) fixedly connected to the base (1), wherein a first sleeve is arranged at the left end of the supporting table (10), the lower part of a main shaft (3) is connected with the supporting table (10) in an inserting manner through the first sleeve, and a first conical disc (4) and a second conical disc (5) are sequentially sleeved on the upper part of the main shaft (3) to form a large belt wheel; the lateral wall is provided with the dovetail on the right-hand member of brace table (10), is provided with slider (20) rather than sliding connection on the dovetail, slider (20) right side and motor (17) fixed connection, and the pot head is equipped with little band pulley (16) on motor (17), big band pulley passes through drive belt (9) with little band pulley (16) and is connected.

2. The stepless speed regulating bench drill of claim 1, characterized in that the middle of the supporting platform (10) is provided with a second sleeve, the upright post (2) is connected with the supporting platform (10) in a sliding manner through the second sleeve, and the relative distance between the base (1) and the supporting platform (10) can be adjusted through the vertical sliding of the supporting platform (10), so as to meet the drilling requirements of parts with different heights.

3. The stepless speed-regulating bench drill according to claim 1, wherein a rack (18) is fixedly connected to the sliding block (20), and the rack (18) is meshed with the gear shaft (11) to form a rack-and-pinion transmission to drive the sliding block (20) to slide left and right.

4. The stepless speed regulating bench drill according to claim 1, wherein a side plate with a mounting hole is arranged on the right side of the sliding block (20), and the motor (17) is fixedly connected to the side plate through a second screw (19), a second gasket (21) and a nut (22).

5. The stepless speed regulating bench drill according to claim 1, characterized in that the upper part of the main shaft (3) is provided with a spline shaft and a thread, and the first conical disk (4) and the second conical disk (5) are sequentially sleeved on the upper part of the main shaft (3) through spline connection.

6. The stepless speed regulation bench drill according to claim 3, wherein the gear shaft (11) is inserted in the bearing seat above the dovetail groove in a sleeved manner, the bearing seat at the front side of the dovetail groove is fixedly connected with the dovetail groove, and the bearing seat at the rear side of the dovetail groove is split and consists of a bearing cover (13) and a first screw (12).

7. The stepless speed regulation bench drill of claim 3, characterized in that the rear end of the gear shaft (11) is fixedly connected with the knob (14), and the gear shaft (11) can rotate along with the knob (14) by rotating the knob, so that the rack (18) and the sliding block (20) are pushed to move left and right, and the motor (17) and the small belt pulley (16) which are fixedly connected with the sliding block (20) move left and right simultaneously.

8. The stepless speed regulation bench drill of claim 1, wherein a compression spring (6), a first gasket (7) and a compression nut (8) are sequentially sleeved above the second conical disc (5).

9. The stepless speed regulation bench drill of claim 8, characterized in that the compression nut (8) can be unscrewed, so as to reduce the pressure of the compression spring (6) at the upper end of the second conical disc (5); the narrow ports of the first conical disc (4) and the second conical disc (5) are mutually abutted when the compression nut (8) is screwed, when the pressure applied to the first conical disc (4) and the second conical disc (5) by the transmission belt (9) is greater than the pressure of the compression spring (6), the first conical disc (4) and the second conical disc (5) are axially separated, the transmission belt radially slides between the large belt wheels consisting of the first conical disc (4) and the second conical disc (5), so that the action diameter of the large belt wheel is reduced, and the action positions of the transmission belt (9), the first conical disc (4) and the second conical disc (5) are changed along with the action position of the large belt wheel.

10. The stepless speed regulating bench drill according to claim 1, characterized in that the upper end of the small belt wheel (16) is provided with a flat key (15) for axially fixing the small belt wheel (16) on the motor (17).