CN112620687A

CN112620687A - Horizontal drilling device

Info

Publication number: CN112620687A
Application number: CN202011586619.7A
Authority: CN
Inventors: 贾鑫; 宋国辉
Original assignee: Beijing Huandu Top Air Conditioning Co ltd
Current assignee: Beijing Huandu Top Air Conditioning Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-09

Abstract

The invention discloses a horizontal drilling device, which comprises a rack and a drilling assembly, wherein the rack is provided with a drilling hole; the rack comprises a machine table for placing a workpiece and a drill floor provided with a drilling assembly; the drill floor is connected with one side of the machine platform; the processing surface of the workpiece is parallel to the connecting surface of the drill floor and the machine platform, and the processing direction of the workpiece is vertical to the processing surface; the drilling assembly comprises a base, one or more high-speed motors, one or more drill bits and a gas-liquid damping cylinder; one end of the gas-liquid damping cylinder is fixed to one side, away from the machine platform, of the drilling platform; the driving shaft of the gas-liquid damping cylinder is fixedly connected to the base and used for driving the base to move along the machining direction; the high-speed motor is fixed on the base and moves together with the base; the drill is fixed to the front end of the rotating shaft of the high-speed motor. The horizontal drilling device can realize high-speed cutting and low-speed feeding during end face drilling, can drill holes with high smoothness and high roundness on sheet metal forming parts, and is particularly suitable for machining workpieces with large breadth and small thickness.

Description

Horizontal drilling device

Technical Field

The invention relates to a horizontal drilling device, and belongs to the field of drilling processing devices.

Background

In the prior art, drilling equipment for sheet metal parts is generally used for drilling in the vertical direction. The available drilling equipment for the end face machining of parts such as metal plates, thin plates and large in brittleness is very few. The problems of large burrs and insufficient roundness of holes can be caused when the existing drilling equipment and the existing drilling method are adopted to process sheet metal parts.

In addition, the existing vertical and horizontal drilling machines are not suitable for processing large plate-shaped parts because the mature equipment in the market does not have a large enough table top and a clamping mechanism.

Disclosure of Invention

The invention aims to solve the technical problem of providing a horizontal drilling device.

In order to achieve the technical purpose, the invention adopts the following technical scheme: a horizontal drilling device comprises a frame and a drilling assembly;

the rack comprises a machine table for placing a workpiece and a drill floor provided with the drilling assembly; the drill floor is connected with one side of the machine platform; the processing surface of the workpiece is parallel to the connecting surface of the drill floor and the machine platform, and the processing direction of the workpiece is vertical to the processing surface;

the drilling assembly comprises a machine base, one or more high-speed motors, one or more drill bits and a gas-liquid damping cylinder; one end of the gas-liquid damping cylinder is fixed to one side, far away from the machine platform, of the drill floor; the driving shaft of the gas-liquid damping cylinder is fixedly connected to the base and used for driving the base to move along the machining direction; the high-speed motor is fixed on the base and moves together with the base; the drill is fixed to a front end of a rotating shaft of the high-speed motor.

Furthermore, two sides of the drill floor perpendicular to the machining surface are respectively provided with a first slide rail, and the base is provided with a first slide block corresponding to the first slide rail.

Furthermore, a second slide rail parallel to the processing surface is arranged on the base, and a second slide block corresponding to the second slide rail is arranged at the bottom of the high-speed motor; the distance between a plurality of high-speed motors is adjustable.

Furthermore, the horizontal drilling device also comprises a clamping assembly and a positioning assembly which are arranged on the machine table;

the clamping assembly is arranged on one side, close to the drill floor, of the machine table and at least used for providing acting force in the vertical direction for the workpiece;

the positioning assembly is arranged on one side, far away from the drill floor, of the machine table and used for providing acting force in the horizontal direction for the workpiece.

Further, the clamping assembly is also used for providing horizontal acting force for the workpiece.

Furthermore, the positioning assembly comprises a horizontal supporting plate, two side connecting plates and a vertical limiting block;

two ends of the supporting plate are connected with the machine table through two side connecting plates; the limiting block is perpendicular to the supporting plate and used for providing acting force towards a machining face for the workpiece.

Furthermore, a slot for accommodating the side connecting plate is formed in the side surface of one end, away from the drill floor, of the machine platform; a first positioning block is arranged on the upper side of the slot; a second positioning block is arranged on the lower side of the slot; the second positioning block is closer to the opening of the slot than the first positioning block;

a plurality of positioning grooves are formed in the bottom edge of the side connecting plate; when the second positioning block is clamped in the positioning groove and the side connecting plate is located at a horizontal position, the upper surface of the side connecting plate is in contact with the lower surface of the first positioning block.

Further, the clamping assembly comprises a rotatable connecting shaft and one or more pressing plates;

two ends of the connecting shaft are rotatably connected with the machine table;

one end of the pressing plate is sleeved on the connecting shaft, and the pressing plate can rotate along with the connecting shaft; the other end of the pressing plate is used for clamping the workpiece together with the machine table; the connecting shaft is rotated to enable the pressure plate to be switched between a loosening state and a clamping state.

Further, the position of the plurality of pressure plates on the connecting shaft is adjustable.

Furthermore, still be provided with one or more backup pads on the board, the length direction of backup pad with the direction of processing is perpendicular.

The horizontal drilling device provided by the invention is combined with the high-speed motor and the gas-liquid damping cylinder, can realize high-speed rotation and low-speed feeding during lateral end face drilling, is particularly suitable for drilling holes on sheet metal forming workpieces with large breadth and small thickness, and is suitable for processing the end faces of large plate-shaped parts; the holes with higher smoothness and roundness can be punched on the sheet metal forming parts.

Drawings

FIG. 1 is a schematic perspective view of a horizontal drilling apparatus according to the present invention;

fig. 2 is a front view of the horizontal drilling apparatus shown in fig. 1.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the horizontal drilling device provided by the invention comprises a frame 1, a drilling assembly (including a movable base 21, a high-speed motor 22, a drill bit 23, a gas-liquid damping cylinder 24), a positioning assembly 3 and a clamping assembly 4.

Specifically, the frame 1 includes a machine table 10 for placing the workpiece 200 and a drill floor 11 provided with a drilling assembly. The drill floor 11 is connected to one side of the machine 10. The drill floor 11 may be disposed at any one side of the machine table 10, and is used for drilling or chamfering an end surface of the workpiece 200 placed on the machine table 10. The processing surface of the workpiece 200 is parallel to the connection surface of the drill floor 11 and the machine platform 10, and the processing direction of the workpiece is perpendicular to the processing surface.

The upper surface 10A of the machine 10 is preferably a rectangular plate. The upper table surface of the machine table 10 is parallel to the ground and is used for placing a workpiece a to be processed. A plurality of machine support legs 100 for supporting the upper surface 10A are provided under the machine 10. The machine support legs 100 are disposed at two long sides of the machine 10, extend to the ground, and are parallel to each other. A connecting rod 101 is arranged between two adjacent machine table supporting legs 100. Four machine supporting legs 100 and two connecting rods 101 form a machine supporting frame for supporting the upper table top 10A of the machine 10.

As shown in fig. 1 and 2, the drill floor 11 is connected to a first short side of the machine stand 10 (right side as shown in fig. 2). The upper table of the drill floor 11 is preferably of rectangular frame construction. The upper table surface of the drill floor 11 and the upper table surface of the machine table 10 can be equal in height or unequal in height. Typically, the upper surface of the drill floor 11 is lower than the upper surface of the machine floor 10. The upper surface of the drill floor 11 includes a plurality of support beams, and preferably, the support beams perpendicular to the machining surface are connected to the machine support legs 100, and both ends of the support beams parallel to the machining surface are respectively connected to the support beams perpendicular to the machining surface.

Below the drill floor 11, drill floor support legs 110 are provided for supporting the upper table and drilling assembly. The drill floor support legs 110 are provided at both short sides of the drill floor 10, extend to the ground, and are parallel to each other. The drilling support legs 110 may be configured to share one support leg with the machine support legs 100, or may be individually configured. When the machine table 10 and the drill floor 11 share the supporting legs, the stability of the whole drilling device is more facilitated. A connecting rod 111 is arranged between two adjacent drilling support legs 110, and four drilling support legs 110 and two connecting rods 111 form a drill floor support frame for supporting the drilling assembly.

In fig. 1 and 2, only one pair of sides of the machine stand 10 and the drill floor 11 are provided with connecting rods, and it is understood that the other pair of sides of the machine stand 10 and the drill floor 11 may be provided with connecting rods.

The drilling assembly includes a housing 21, one or more high speed motors 22, one or more drill bits 23, and a gas and liquid damping cylinder 24. Wherein, one end of the gas-liquid damping cylinder 24 is fixed on one side of the drill floor 11 far away from the machine platform 10; a driving shaft of the gas-liquid damping cylinder 24 is fixedly connected to the frame 21 for driving the frame 21 to move in a machining direction (i.e., a direction perpendicular to a machining surface); the high-speed motor 22 is fixed to the base 21, the drill 23 is fixed to the front end of the rotating shaft of the high-speed motor 22, and the high-speed motor 22, the drill 23 and the base 21 move together in the machining direction.

As shown in fig. 1 and 2, first slide rails 25 are provided on both sides of the drill floor 11 perpendicular to the machining surface (i.e., short sides of the drill floor 11 in fig. 1). The base 21 has a plurality of first sliding blocks 26 at the bottom, and the plurality of first sliding blocks 26 correspond to the first sliding rails 25 for moving the base 21.

One end of the gas-liquid damping cylinder 24 is fixed to the side of the drill floor 11 remote from the machine stand 10. The drive shaft of the gas-liquid damping cylinder 24 is fixedly connected to the machine base 21 for driving the machine base 21 to move in a direction perpendicular to the machining surface (i.e., in the machining direction). The gas-liquid damping cylinder 24 overcomes the instability of gas transmission, and after the gas-liquid damping cylinder is combined with high-speed drilling, the cutting amount and the cutting force can be controlled very little, and the gas-liquid damping cylinder is one of key technologies for ensuring the drilling quality.

In addition, the gas-liquid damping cylinder 24 is selected, so that the requirements of pushing the high-speed motor forwards at a low speed during drilling and realizing small feeding can be met, and the requirement of rapidly moving the base 21 during non-drilling can be met. By selecting a gas-liquid damping cylinder with appropriate parameters, two different speeds can be provided.

One or more drilling devices are provided on the stand 21. A single drilling apparatus includes a high speed motor 22 and a drill bit 23. The high-speed motor 22 is disposed on the base 21 and is movable in the machine direction together with the base 21. The drill 23 is fixed to the front end of the rotating shaft of the high-speed motor 22, rotates with the rotation of the high-speed motor, and punches a lateral end face with the movement of the base 21. The rotation axes of the two drills 23 are arranged in parallel and perpendicular to the machining face of the workpiece 200 to be machined.

Preferably, the plurality of drilling devices are movable in the direction of the working surface to adjust the hole pitch. For example, the drilling equipment is a double-shaft drilling equipment, and the drilling equipment can be suitable for the end face drilling requirements of various sheet metals and thin plates with different end face sizes by adjusting the distance between the two drilling equipment.

Two parallel second slide rails 27 are arranged on the machine base 21, the length direction of the second slide rails 27 is parallel to the processing surface, a plurality of second slide blocks 28 are arranged at the bottom of the high-speed motor 22, and the second slide blocks 28 correspond to the second slide rails 27. The high-speed motor 22 and the drill 23 are movable in a direction parallel to the machining surface by the second slider 28 and the second slide rail 27. When a plurality of high-speed motors 22 are arranged on the machine base 21, the hole spacing can be adjusted by adjusting the spacing between different high-speed motors 22, so that the drilling requirements of different hole spacing can be met, namely, the requirement of size change of the opening of the workpiece A to be processed is met.

In order to quantitatively adjust the distance between the drills 23, the base 21 may be provided with a scale, and the high-speed motor 22 may be provided with a pointer 29 corresponding to the position of the drill 23. By observing the distance between the plurality of pointers 29, the spacing between the plurality of bits 23 can be determined.

The high-speed motor 24 selected by the invention is a motor with the rotating speed of more than 6000 r/min. For example, 9000r/min is selected as the rated rotational speed of high-speed motor 22. The increase of the rotation speed during drilling reduces the cutting force, and the cutting force reduces the forced vibration born by the workpiece 200 and the drill 23, so the drilling quality is improved, and the burrs around the hole can be reduced.

Through above-mentioned drilling subassembly, combine the low-speed steady feed of gas-liquid damping cylinder and the high-speed rotation of high-speed motor, realize the processing demand of high accuracy, can improve the quality of punching, be applicable to the terminal surface of the panel beating class, the sheet metal class work piece that the thickness is less, the work piece is more fragile to process. For example, the processing of the guard plates of various fresh air machines and air conditioning equipment. According to the processing requirement, the requirement of chamfering can be realized by adjusting the height of the workpiece or the height of the drill bit.

In order to improve the processing quality of workpieces, the horizontal drilling device provided by the invention simultaneously provides the positioning component 3 and the clamping component 4 which are arranged on the machine table 10. The positioning assembly 3 is disposed on a side of the machine platform 10 away from the drill floor 11, and is configured to provide a horizontal acting force to the workpiece 200, that is, a acting force in a direction toward the drill floor 11, so as to position the workpiece 200. The chucking assembly 4 is disposed on a side of the machine 10 close to the drill floor 11, and at least is used for providing a vertical force to the workpiece 200. Preferably, the chucking assembly 4 is also used to provide a horizontal force to the workpiece 200. The end close to the machining surface of the workpiece 200 is the front end, and the end far from the machining surface of the workpiece 200 is the rear end. The positioning component 3 and the clamping component 4 are respectively used for applying acting force from the rear end and the front end of the workpiece 200 to realize the fixation of the workpiece 200. By combining the positioning component 3 and the clamping component 4, the workpiece 200 can be quickly clamped, and the deformation of the workpiece in the machining process can be reduced.

Specifically, the positioning assembly 3 is disposed at an end of the machine 10 away from the drill floor 11, and is used for positioning a rear end of the workpiece 200. The positioning assembly 3 comprises a horizontal support plate 30, two side connecting plates 31 and a limiting block 32. Wherein the supporting plate 30 is used to provide an upward supporting force to the rear end of the workpiece 200. The two ends of the supporting plate 30 are connected to the machine table 10 through two side connecting plates 31. The stoppers 32 are disposed perpendicular to the support plate 30, the workpiece 200 is placed on the support plate 30, and the stoppers 32 are used to provide the workpiece with an acting force toward the processing surface.

Preferably, the position of the positioning assembly 3 on the machine table 10 is adjustable to adapt to the processing of workpieces with different length dimensions. Since the positioning assembly 3 needs to provide a positioning function to the rear end of the workpiece 200, the positioning assembly 3 can only achieve position adjustment of a plurality of fixed sizes.

For the purpose of modular adjustment of the distance between the positioning element 3 and the chucking element 4, a slot 105 for receiving the side connection plate 31 is provided on the side of the machine 10 remote from the drill floor 11. Two positioning blocks (including a first positioning block 106 and a second positioning block 107) are arranged in the slot 105, the first positioning block is arranged at a position close to the upper side of the slot 105, the second positioning block 107 is arranged at a position close to the lower side of the slot 105, and the second positioning block 107 is closer to the opening position of the slot 105 than the first positioning block 106.

A plurality of positioning grooves 35 are arranged at the bottom edge of the side connecting plate 31; when the second positioning block 107 is snapped into the positioning groove 35 and the side link plate 31 is in a horizontal position, the upper surface of the side link plate 31 contacts the lower surface of the first positioning block 106.

When the position of the positioning component 3 is adjusted, the second positioning block 107 is clamped into different positioning grooves 35 by lifting the rear end of the positioning component 3 upwards and moving the position of the positioning component 3, and then the rear end of the positioning component 3 is put down, so that the adjustment of the positioning component 3 is realized. At this time, the upper surface of the side connection plate 31 is in contact with the first positioning block 106, and the first positioning block 106 serves to define the movement of the side connection plate 31 from above, thereby achieving the position definition of the positioning assembly 3.

The clamping assembly 4 is arranged at one end of the machine table 10 close to the drill floor 11 and used for fixing the front end of the workpiece 200. The chucking assembly 4 includes a rotatable coupling shaft 41 and one or more pressing plates 42. The positions of the pressing plates 42 on the connecting shaft 41 are adjustable, and the clamping device is suitable for clamping workpieces with different end surface lengths.

As shown in fig. 1, both ends of the connecting shaft 41 are rotatably connected to the machine 10. The cross-sections of the two ends of the connecting shaft 41 are circular, and are arranged on a fixing frame connected with the machine table 10 through bearings. The center portion of the coupling shaft 41 has a square cross section for fitting the pressing plate 42. One end of the pressing plate 42 is sleeved on the connecting shaft 41, and the pressing plate 42 can rotate along with the connecting shaft 41. The other end of the pressing plate 42 is used for clamping the workpiece 200 together with the machine table 11. The pressing plate 42 has a square hole for engaging with the middle portion of the coupling shaft 41, and the pressing plate 42 can be switched between a release state and a clamping state by rotating the coupling shaft 41.

The position of the positioning assembly 3 is adjusted according to the size of the workpiece to be processed, and the position between the plurality of pressing plates 42 in the chucking assembly 4 is adjusted. The pressing plate 42 is rotated to an open state, the workpiece is placed on the machine table, the rear end of the workpiece abuts against the limiting block 32, and the pressing plate 42 is rotated to a clamping state. In the process of rotating the pressure plate 42, the workpiece 200 is driven to cut into the workpiece at an angle of 45 degrees by the action of the pressure plate 42, so that the workpiece 200 is accurately positioned in the vertical and cutting feeding directions.

In order to reduce the deformation of the workpiece 200 during the machining process, one or more supporting members 5 may be further disposed on the machine table 10, and the length direction of the supporting members 5 is perpendicular to the machining direction, so that the friction force of the sheet metal part sliding towards the rear end is increased by the gravity of the sheet metal part. The supporting member 5 is made of a material different from the material of the upper surface 10A of the machine 10.

In conclusion, the horizontal drilling device provided by the invention is suitable for tapping on a sheet metal forming workpiece with a large breadth and a small thickness, is suitable for end face machining of a large plate-shaped part, and can be placed and positioned quickly; the holes with higher smoothness and roundness can be punched on the sheet metal forming parts.

The horizontal drilling device provided by the invention is explained in detail above. It will be apparent to those skilled in the art that any obvious modifications thereof can be made without departing from the spirit of the invention, which infringes the patent right of the invention and bears the corresponding legal responsibility.

Claims

1. A horizontal drilling device is characterized by comprising a frame and a drilling assembly;

2. The horizontal drilling apparatus according to claim 1,

the two sides of the drill floor, which are perpendicular to the processing surface, are respectively provided with a first slide rail, and the machine base is provided with a first slide block corresponding to the first slide rail.

3. The horizontal drilling apparatus according to claim 1,

a second sliding rail parallel to the processing surface is arranged on the base, and a second sliding block corresponding to the second sliding rail is arranged at the bottom of the high-speed motor; the distance between a plurality of high-speed motors is adjustable.

4. The horizontal drilling device according to claim 1, further comprising a clamping assembly and a positioning assembly arranged on the machine platform;

5. The horizontal drilling apparatus according to claim 4,

the clamping assembly is also used for providing horizontal acting force for the workpiece.

6. The horizontal drilling apparatus according to claim 4,

the positioning assembly comprises a horizontal supporting plate, two side connecting plates and a vertical limiting block;

7. The horizontal drilling apparatus according to claim 6,

a slot for accommodating the side connecting plate is formed in the side surface of one end, far away from the drill floor, of the machine table; a first positioning block is arranged on the upper side of the slot; a second positioning block is arranged on the lower side of the slot; the second positioning block is closer to the opening of the slot than the first positioning block;

8. The horizontal drilling apparatus according to claim 4,

the clamping assembly comprises a rotatable connecting shaft and one or more pressing plates;

9. The horizontal drilling apparatus according to claim 8,

the positions of the pressing plates on the connecting shaft are adjustable.

10. The horizontal drilling apparatus according to claim 1 or 4,

the machine table is also provided with one or more supporting plates, and the length direction of the supporting plates is perpendicular to the processing direction.