CN211866675U

CN211866675U - Pneumatic vertical drilling machine

Info

Publication number: CN211866675U
Application number: CN202020265574.2U
Authority: CN
Inventors: 梁西
Original assignee: Zhejiang Jubo Automation Equipment Co ltd
Current assignee: Taizhou Xidelong Technology Co.,Ltd.
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2020-11-06
Anticipated expiration: 2030-03-04

Abstract

The utility model belongs to the technical field of machinery, a pneumatic upright drill is related to, it has solved current upright drill occupation space big, poor stability scheduling problem. The vertical drilling machine comprises a main shaft, wherein a sealing block is arranged in the main shaft, the sealing block is matched with the lower end surface of the main shaft to form a sealing cavity, a piston is movably arranged in the sealing cavity, the sealing cavity is divided into an upper cavity and a lower cavity by the piston, and an air inlet hole communicated with the upper cavity is formed in the sealing block; still be provided with the integral key shaft that passes the piston in the main shaft, the upper end of integral key shaft is connected with and drives its pivoted actuating mechanism, and the lower extreme of integral key shaft is connected with the connecting rod through the keyway cooperation, and the piston can drive the connecting rod through removing and remove, and the lower extreme of connecting rod is connected with the cutter. Compared with the prior art, this application with pneumatic design in the main shaft, leave out external cylinder, effectively simplify the structure, avoid drilling machine top weight too big influence stability.

Description

Pneumatic vertical drilling machine

Technical Field

The utility model belongs to the technical field of machinery, a pneumatic upright drill is related to.

Background

With the continuous development of numerical control technology, more and more mechanical equipment is developing towards high speed, high precision and high intelligence, and the built-in spindle unit becomes a core functional component of the numerical control machine tool which can adapt to the high-performance working condition most.

For example, the broach spindle of the numerical control upright drilling machine disclosed in the chinese patent CN 203664685U is inserted into the spindle box body, the broach spindle can move up and down along the axial direction of the broach spindle relative to the spindle box body, and a pneumatic tool changer is arranged in the broach spindle and comprises a pressurizing cylinder, a push rod, a pull rod and a tool changing mechanism. The pneumatic tool changing can be realized through the pressurizing cylinder in the machining process of the main shaft, and the machining efficiency is improved.

However, the broach spindle needs to be additionally provided with a cylinder above the equipment, so that the drilling machine is heavy above the broach spindle, the center of gravity moves upwards and is easy to shake, and the broach spindle is complex in structure and large in occupied space.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a pneumatic upright drill, the utility model aims to solve the technical problem that: how to simplify the structure of this drilling machine, improve operating stability.

The purpose of the utility model can be realized by the following technical proposal:

a pneumatic vertical drilling machine is characterized by comprising a main shaft, wherein a sealing block is arranged in the main shaft, the sealing block is matched with the lower end face of the main shaft to form a sealing cavity, a piston is movably arranged in the sealing cavity, the sealing cavity is divided into an upper cavity and a lower cavity by the piston, and an air inlet hole communicated with the upper cavity is formed in the sealing block; still be provided with in the main shaft and pass the integral key shaft of piston, the upper end of integral key shaft is connected with and drives its pivoted actuating mechanism, the lower extreme of integral key shaft is connected with the connecting rod through the keyway cooperation, the piston can drive the connecting rod through removing and remove, the lower extreme of connecting rod is connected with the cutter.

The working principle is as follows: the vertical drilling machine can drive the spline shaft to rotate through the driving mechanism, so that the connecting rod and a cutter at the lower end of the connecting rod are driven to rotate; when the connecting rod needs to be driven to move, air can be injected into the upper cavity through the air inlet hole of the sealing block to drive the piston to move downwards, so that the connecting rod and the cutter are driven to move downwards. Compared with the prior art, this application with pneumatic design in the main shaft, leave out external cylinder, effectively simplify the structure, avoid drilling machine top weight too big influence stability.

In the pneumatic vertical drilling machine, the driving mechanism comprises a motor, a driving wheel and a driven wheel, the driving wheel is sleeved on an output shaft of the motor, the driven wheel is sleeved above the spline shaft, and the driving wheel is connected with the driven wheel through a transmission belt. The output shaft of motor is rotatory, drives the action wheel and rotates to drive through the drive belt and rotate from the driving wheel, finally drive the integral key shaft and rotate.

In the pneumatic vertical drilling machine, the main shaft comprises an upper shaft body and a lower shaft body, the sealing block is arranged at the lower end part of the upper shaft body, the outer side wall of the sealing block is provided with an external thread, and the upper end part of the lower shaft body is provided with an internal thread matched with the external thread. The upper shaft body is in threaded connection with the lower shaft body through the sealing block.

In the pneumatic vertical drilling machine, the sealing block is provided with an air inlet valve and an air outlet valve, the air inlet valve is communicated with the air inlet hole, and the air outlet valve is communicated with the upper cavity. After the air inlet valve and the air outlet valve are designed, the air pressure in the upper cavity can be adjusted, so that the movement of the piston is adjusted.

In the pneumatic vertical drilling machine, an opening is formed in the side wall of the upper shaft body, the upper end of the piston extends to the opening, a shifting piece is arranged at the upper end of the piston, and an upper travel switch and a lower travel switch are arranged on the upper shaft body in the vertical direction. The driving plate, the upper travel switch and the lower travel switch are designed to control the motion travel of the piston.

In the pneumatic vertical drilling machine, the copper sleeve is arranged in the sealing block, and the piston penetrates through the copper sleeve and is in sliding fit with the copper sleeve. After the design has the copper sheathing, can play the guide effect.

In the pneumatic vertical drilling machine, the cylinder barrel is arranged in the lower shaft body, the piston is arranged in the cylinder barrel in a sliding mode, the outer wall of the piston is provided with an annular groove, and a sealing ring which is attached to the cylinder barrel is embedded in the annular groove. The outer wall design of piston has the sealing washer, can play better sealed effect.

In the pneumatic vertical drilling machine, the lower end of the piston is provided with a step hole, the step hole is provided with a first step surface, the upper end of the connecting rod is inserted into the step hole, and the upper end of the connecting rod is provided with a second step surface which can be attached to the first step surface. After the first step surface and the second step surface are designed, when the piston moves, the first step surface is attached to the second step surface, and the connecting rod is driven to move.

In the pneumatic vertical drilling machine, the lower end of the lower shaft body is in threaded connection with the sealing plug, and the lower end of the connecting rod penetrates through the sealing plug. After the sealing plug is designed, the sealing plug can be matched with the sealing block, so that the sealing performance of the sealing cavity is ensured.

Compared with the prior art, the utility model has the advantages of it is following:

this application omits external cylinder with pneumatic design in the main shaft, effectively simplifies the structure, avoids the too big influence stability of drilling machine top weight.

Drawings

FIG. 1 is a schematic diagram of the present upright drill press.

FIG. 2 is an exploded view of the present upright drill press.

Fig. 3 is a schematic structural diagram of the present sealing block.

In the figure, 1, main shaft; 2. a sealing block; 3. a piston; 4. an upper cavity; 5. a lower cavity; 6. an air inlet; 7. a spline shaft; 8. a drive mechanism; 9. a connecting rod; 10. a motor; 11. a driving wheel; 12. a driven wheel; 13. an upper shaft body; 14. a lower shaft body; 15. an intake valve; 16. an air outlet valve; 17. an opening; 18. a shifting sheet; 19. an upper travel switch; 20. a lower travel switch; 21. a copper sleeve; 22. a cylinder barrel; 23. an annular groove; 24. a stepped bore; 25. a first step surface; 26. a step surface II; 27. and (6) sealing the plug.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the vertical drilling machine comprises a main shaft 1, wherein a sealing block 2 is arranged in the main shaft 1, the sealing block 2 is matched with the lower end surface of the main shaft 1 to form a sealing cavity, a piston 3 is movably arranged in the sealing cavity, the sealing cavity is divided into an upper cavity 4 and a lower cavity 5 by the piston 3, and an air inlet 6 communicated with the upper cavity 4 is formed in the sealing block 2; still be provided with the integral key shaft 7 that passes piston 3 in the main shaft 1, the upper end of integral key shaft 7 is connected with and drives its pivoted actuating mechanism 8, and the lower extreme of integral key shaft 7 is connected with connecting rod 9 through the keyway cooperation, and piston 3 can drive connecting rod 9 through removing and remove, and the lower extreme of connecting rod 9 is connected with the cutter.

Specifically, as shown in fig. 2, in the present embodiment, the driving mechanism 8 includes a motor 10, a driving wheel 11 and a driven wheel 12, the driving wheel 11 is sleeved on an output shaft of the motor 10, the driven wheel 12 is sleeved above the spline shaft 7, and the driving wheel 11 is connected to the driven wheel 12 through a transmission belt. As another solution, the driving mechanism 8 may also adopt a motor direct drive or a gear transmission manner.

As shown in fig. 2 and 3, the main shaft 1 includes an upper shaft body 13 and a lower shaft body 14, the seal block 2 is disposed at a lower end portion of the upper shaft body 13, an outer side wall of the seal block 2 has an external thread, and an upper end portion of the lower shaft body 14 has an internal thread engaged with the external thread. An air inlet valve 15 and an air outlet valve 16 are arranged on the sealing block 2, the air inlet valve 15 is communicated with the air inlet hole 6, and the air outlet valve 16 is communicated with the upper cavity 4.

In order to control the stroke and stability of the piston 3, as shown in fig. 1 and 2, an opening 17 is formed in a side wall of the upper shaft 13, an upper end of the piston 3 extends to the opening 17, a pick 18 is disposed at the upper end of the piston 3, and an upper stroke switch 19 and a lower stroke switch 20 are disposed on the upper shaft 13 in the vertical direction. A copper sleeve 21 is arranged in the sealing block 2, and the piston 3 penetrates through the copper sleeve 21 and is in sliding fit with the copper sleeve 21. A cylinder 22 is arranged in the lower shaft body 14, the piston 3 is arranged in the cylinder 22 in a sliding manner, an annular groove 23 is formed in the outer wall of the piston 3, and a sealing ring which is attached to the cylinder 22 in a leaning manner is embedded in the annular groove 23.

As shown in fig. 2, a stepped hole 24 is formed at the lower end of the piston 3, a first stepped surface 25 is formed on the stepped hole 24, the upper end of the connecting rod 9 is inserted into the stepped hole 24, and a second stepped surface 26 capable of abutting against the first stepped surface 25 is formed at the upper end of the connecting rod 9. A sealing plug 27 is screwed to the lower end of the lower shaft 14, and the lower end of the connecting rod 9 passes through the sealing plug 27.

The working principle of the utility model is as follows: the vertical drilling machine can drive the spline shaft to rotate through the driving mechanism, so that the connecting rod and a cutter at the lower end of the connecting rod are driven to rotate; when the connecting rod needs to be driven to move, air can be injected into the upper cavity through the air inlet hole of the sealing block to drive the piston to move downwards, so that the connecting rod and the cutter are driven to move downwards.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The pneumatic vertical drilling machine is characterized by comprising a main shaft (1), wherein a sealing block (2) is arranged in the main shaft (1), the sealing block (2) is matched with the lower end face of the main shaft (1) to form a sealing cavity, a piston (3) is movably arranged in the sealing cavity, the sealing cavity is divided into an upper cavity (4) and a lower cavity (5) by the piston (3), and an air inlet (6) communicated with the upper cavity (4) is formed in the sealing block (2); still be provided with in main shaft (1) and pass integral key shaft (7) of piston (3), the upper end of integral key shaft (7) is connected with and drives its pivoted actuating mechanism (8), the lower extreme of integral key shaft (7) is connected with connecting rod (9) through the keyway cooperation, piston (3) can drive connecting rod (9) through the removal and remove, the lower extreme of connecting rod (9) is connected with the cutter.

2. The pneumatic upright drilling machine as claimed in claim 1, wherein the driving mechanism (8) comprises a motor (10), a driving wheel (11) and a driven wheel (12), the driving wheel (11) is sleeved on an output shaft of the motor (10), the driven wheel (12) is sleeved above the spline shaft (7), and the driving wheel (11) is connected with the driven wheel (12) through a transmission belt.

3. The pneumatic vertical drilling machine according to claim 2, wherein the main shaft (1) comprises an upper shaft body (13) and a lower shaft body (14), the sealing block (2) is arranged at the lower end part of the upper shaft body (13), the outer side wall of the sealing block (2) is provided with an external thread, and the upper end part of the lower shaft body (14) is provided with an internal thread matched with the external thread.

4. The pneumatic upright drilling machine according to claim 3, wherein an air inlet valve (15) and an air outlet valve (16) are arranged on the sealing block (2), the air inlet valve (15) is communicated with the air inlet hole (6), and the air outlet valve (16) is communicated with the upper cavity (4).

5. The pneumatic vertical drilling machine according to claim 4, wherein an opening (17) is formed in a side wall of the upper shaft body (13), the upper end of the piston (3) extends to the opening (17), a shifting piece (18) is arranged at the upper end of the piston (3), and an upper travel switch (19) and a lower travel switch (20) are arranged on the upper shaft body (13) in the vertical direction.

6. Pneumatic upright drilling machine according to claim 5, characterized in that a copper bush (21) is provided inside said sealing block (2), said piston (3) passing through said copper bush (21) with a sliding fit.

7. The pneumatic vertical drilling machine according to claim 6, wherein a cylinder barrel (22) is arranged in the lower shaft body (14), the piston (3) is arranged in the cylinder barrel (22) in a sliding manner, an annular groove (23) is formed in the outer wall of the piston (3), and a sealing ring which is attached to the cylinder barrel (22) in a leaning manner is embedded in the annular groove (23).

8. The pneumatic vertical drilling machine according to claim 7, wherein the lower end of the piston (3) is provided with a step hole (24), the step hole (24) is provided with a first step surface (25), the upper end of the connecting rod (9) is inserted into the step hole (24), and the upper end of the connecting rod (9) is provided with a second step surface (26) which can be attached to the first step surface (25).

9. The pneumatic upright drilling machine according to claim 8, characterized in that a sealing plug (27) is screwed to the lower end of the lower shaft body (14), and the lower end of the connecting rod (9) passes through the sealing plug (27).