CN112440118B

CN112440118B - Automatic drilling, tapping and chamfering integrated machine tool

Info

Publication number: CN112440118B
Application number: CN202011282760.8A
Authority: CN
Inventors: 解美婷
Original assignee: Weihai Vocational College
Current assignee: Weihai Vocational College
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2022-03-01
Anticipated expiration: 2040-11-16
Also published as: CN112440118A

Abstract

The invention discloses an automatic drilling, tapping and chamfering integrated machine tool, and mainly relates to the field of mechanical equipment. The automatic feeding and clamping device comprises a feeding mechanism, an automatic feeding and clamping mechanism and a screw tap; the feeding mechanism is a feeding groove rail; the automatic feeding and clamping mechanism comprises a V-shaped positioning block, a pushing block and a feeding shifting bar; the feeding shifting strip comprises a long arc-shaped shifting strip and a short arc-shaped shifting strip, and a shifting head is arranged on one side, far away from the short arc-shaped shifting strip, of the long arc-shaped shifting strip; the screw tap is arranged on a machining main shaft of a machine tool transmission mechanism, and the machine tool transmission mechanism is an X-axis, Y-axis and Z-axis three-axis linkage mechanism and is controlled by a personal service system. The invention has the beneficial effects that: the automatic tapping machine can realize the whole processing process of automatic feeding, clamping, positioning and tapping, and greatly improves the processing efficiency; and for the processing of the internal thread flange connecting piece, the processes of tapping, drilling and chamfering can realize synchronous processing through a cutter combination, and the processing efficiency of the internal thread flange connecting piece is greatly improved.

Description

Automatic drilling, tapping and chamfering integrated machine tool

Technical Field

The invention relates to the field of mechanical equipment, in particular to an automatic drilling, tapping and chamfering integrated machine tool.

Background

Referring to the drawings, fig. 7 and 8 show two types of connectors, fig. 8 shows a common internally threaded column, and fig. 7 shows an internally threaded flange connector. The workpieces of fig. 7 and 8 both require internal threading, and the internally threaded flange connection shown in fig. 7 also requires drilling of the flange hole and chamfering of the flange outer edge. At present, when the workpiece is machined again, automatic feeding, clamping and positioning cannot be achieved, machining procedures are increased, and machining efficiency is slow. In addition, for the processing of the internal thread flange connecting piece shown in the figure 7, the processes of tapping, drilling and chamfering are separately and independently processed, and the processing efficiency is greatly reduced.

Disclosure of Invention

The invention aims to provide an automatic drilling, tapping and chamfering integrated machine tool, which can realize the whole processing process of automatic feeding, clamping, positioning and tapping, and greatly improve the processing efficiency; and for the processing of the internal thread flange connecting piece, the processes of tapping, drilling and chamfering can realize synchronous processing through a cutter combination, and the processing efficiency of the internal thread flange connecting piece is greatly improved.

In order to achieve the purpose, the invention is realized by the following technical scheme:

an automatic drilling, tapping and chamfering integrated machine tool comprises a feeding mechanism, an automatic loading and clamping mechanism and a screw tap, wherein the feeding mechanism, the automatic loading and clamping mechanism and the screw tap are arranged on a workbench; the feeding mechanism is a feeding groove rail, and a notch groove is formed in the tail end of the side wall of one side of the feeding groove rail; the automatic feeding and clamping mechanism comprises a V-shaped positioning block, a pushing block and a feeding shifting bar; the V-shaped positioning block is fixed on a clamping seat on the workbench, the pushing surface of the pushing block is a quarter arc surface, the pushing block is connected with a piston rod of the servo cylinder through a connecting rod, and the V-shaped positioning block corresponds to the pushing block; the feeding shifting strip is in an L shape and comprises a long arc-shaped shifting strip and a short arc-shaped shifting strip, the position of the feeding shifting strip is matched with the position of the notch groove, a shifting head is arranged on one side, away from the short arc-shaped shifting strip, of the long arc-shaped shifting strip, a material blocking plate is arranged on one side of the clamping seat, a hole with the same height as the notch groove is formed in the material blocking plate, the connecting part of the long arc-shaped shifting strip and the short arc-shaped shifting strip penetrates through the hole, a feeding spring is arranged on the material blocking plate, the other end of the feeding spring is fixed at the connecting part of the long arc-shaped shifting strip and the short arc-shaped shifting strip, and the tail end of the short arc-shaped shifting strip is rotatably connected and arranged on the workbench; a blanking hole is formed in the workbench between the V-shaped positioning block and the pushing block; the screw tap is arranged on a machining main shaft of a machine tool transmission mechanism, and the machine tool transmission mechanism is an X-axis, Y-axis and Z-axis three-axis linkage mechanism and is controlled by a personal service system.

The automatic drilling and tapping chamfering tool is characterized in that drill bits are coaxially arranged on the bottom surface of the screw tap, a grinding disc is arranged at the top of the screw tap, and the grinding disc, the screw tap and the drill bits form an automatic drilling and tapping chamfering tool combination.

The rear end of the workbench is provided with a conveying inclined plate, and the conveying inclined plate is provided with a blanking strip hole.

And a limit stop block is arranged on the outer side of the rear end of the shifting head of the long arc-shaped shifting strip.

And the working table is provided with a cutting fluid spray pipe.

The bottom surface of the feeding groove rail is an arc-shaped bottom surface.

And the edge of the inner disc surface of the grinding disc is provided with a round-corner grinding disc.

Compared with the prior art, the invention has the beneficial effects that:

the device can realize the whole processing process of automatic feeding, clamping, positioning and tapping through the cooperative matching of the V-shaped positioning block, the push block, the feeding shifting strip and the screw tap, thereby greatly improving the processing efficiency; and the grinding disc, the screw tap and the drill bit form a cutter combination for automatic drilling, tapping and chamfering, and for the processing of the internal thread flange connecting piece, the tapping, drilling and chamfering processes can realize synchronous processing through one cutter combination, so that the processing efficiency of the internal thread flange connecting piece is greatly improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a state diagram of the present invention in use.

Fig. 3 is a state diagram of the present invention in use.

Fig. 4 is a state diagram of the present invention in use.

Fig. 5 is a state diagram of the present invention in use.

FIG. 6 is a schematic view of the cutter assembly of the present invention.

FIG. 7 is a schematic view of the construction of an internally threaded flange connection piece.

Fig. 8 is a schematic structural view of a common internal threaded column workpiece.

Fig. 9 is a schematic structural view of a common internal thread column workpiece in a clamping and tapping machining state.

Fig. 10 is a schematic structural diagram of a common internal thread column workpiece which is tapped and is pulled out by a feeding pulling bar, and a next common internal thread column workpiece to be tapped is pulled to a push block by the feeding pulling bar in the process.

Fig. 11 is a schematic structural diagram of a common internal thread column workpiece which is tapped and then is pulled out by a feeding pulling bar, and a next common internal thread column workpiece to be tapped is pulled to a pushing block by the feeding pulling bar.

Fig. 12 is a schematic structural diagram of a process in which a common internal thread column workpiece to be tapped is pushed to a V-shaped positioning block by a push block, and a feeding shifting bar is pushed to a resetting process by the common internal thread column workpiece to be tapped.

Fig. 13 is a schematic structural diagram of the common internal thread column workpiece to be tapped when being pushed to the V-shaped positioning block by the push block and the feeding shifting bar is pushed to a reset state by the common internal thread column workpiece to be tapped.

Reference numerals shown in the drawings:

1. a work table; 2. a screw tap; 3. a feeding groove rail; 4. a notch groove; 5. a V-shaped positioning block; 6. a push block; 7. feeding and shifting strips; 8. installing a clamping seat; 9. a circular arc surface; 10. a connecting rod; 11. a servo cylinder; 12. a piston rod; 13. a long arc-shaped poking strip; 14. short arc-shaped poking strips; 15. a shifting block; 16. a striker plate; 17. hole deletion; 18. a feeding spring; 19. a blanking hole; 20. processing a main shaft; 21. a drill bit; 22. a grinding disc; 23. a conveying sloping plate; 24. blanking strip holes; 25. a limit stop block; 26. a cutting fluid spray pipe; 27. an arcuate bottom surface; 28. grinding a fillet; 29. and (5) horizontally pushing the surface.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

The invention relates to an automatic drilling, tapping and chamfering integrated machine tool, which comprises a main body structure and a screw tap 2, wherein the main body structure comprises a feeding mechanism, an automatic feeding and clamping mechanism and the screw tap 2 which are arranged on a workbench 1.

The feeding mechanism is a feeding groove rail 3, and the bottom surface of the feeding groove rail 3 is an arc-shaped bottom surface 27, so that the workpieces to be processed in the back row can fall and be conveyed conveniently. The tail end of the side wall of one side of the feeding groove rail 3 is provided with a notch groove 4 matched with the feeding shifting strip 7, and the feeding shifting strip 7 is shifted from the notch groove 4 to enter and exit.

The automatic feeding and clamping mechanism comprises a V-shaped positioning block 5, a pushing block 6 and a feeding shifting strip 7; the V-shaped positioning block 5 is fixed on a clamping seat 8 on the workbench 1, the pushing surface of the pushing block 6 is a quarter arc surface 9, and as shown in the attached drawing figure 1 of the specification, one side of the quarter arc surface 9 close to the feeding groove rail 3 is also provided with a section of flat pushing surface 29, so that a workpiece to be processed can be pushed, positioned and clamped conveniently. The push block 6 is connected with a piston rod 12 of a servo cylinder 11 through a connecting rod 10, and the V-shaped positioning block 5 corresponds to the push block 6; the reciprocating movement of the push block 6 is realized by the expansion and contraction of a piston rod 12 of the servo cylinder 11.

The feeding shifting strip 7 is an L-shaped shifting strip and comprises a long arc-shaped shifting strip 13 and a short arc-shaped shifting strip 14, the position of the feeding shifting strip 7 is matched with the position of the notch groove 4, a shifting head 15 is arranged on one side, far away from the short arc-shaped shifting strip 14, of the long arc-shaped shifting strip 13, and the shifting head 15 is used for pushing the next workpiece to be processed to the position of the pushing block 6 from the feeding groove rail 3. 8 one side of clamping seat is equipped with striker plate 16, be equipped with on striker plate 16 with breach groove 4 wait high scarce hole 17, strip 13 is dialled with the short arc to long arc passes scarce hole 17 with the junction that strip 14 is dialled to the short arc, be equipped with material loading spring 18 on striker plate 16, material loading spring 18's the other end is fixed and is dialled strip 13 and short arc and dial the junction that strip 14, short arc dials the end rotation of strip 14 and connects the setting on workstation 1. As shown in the attached drawings of the specification and fig. 2-5, when a part exists on the processing station, the long arc-shaped poking strip 13 is pressed and held by the part side arc surface 9 on the processing station, and the feeding spring 18 is stretched in the state; when the parts on the machining station are machined, and the push block 6 is pulled back by contraction of the piston rod 12 of the servo cylinder 11, the feeding shifting bar 7 is pulled to rotate along the rotation direction shown by an arrow a in the attached drawings of the specification and figures 2-5 under the action of the elastic force of the feeding spring 18, so that the long arc-shaped shifting bar 13 of the feeding shifting bar 7 rotates into the notch groove 4, the machined workpiece is shifted out of the machining station by the long arc-shaped shifting bar 13 of the feeding shifting bar 7 in the process, and the next workpiece to be machined is shifted to the push block 6 by the shifting head 15 of the feeding shifting bar 7. Then, the piston rod 12 of the servo cylinder 11 is extended again to push the push block 6 to one side of the V-shaped positioning block 5, in the process, the push block 6 pushes the next workpiece to be processed to overcome the elastic force of the spring of the feeding spring 18 to push the next workpiece to be processed to a processing station to be contacted with the V-shaped positioning block 5, in the process, the workpiece to be processed also pushes the feeding shifting bar 7 to reset, and the shifting head 15 of the feeding shifting bar 7 is reset to the outer side of the notch groove 4 again.

A blanking hole 19 is formed in the workbench 1 between the V-shaped positioning block 5 and the pushing block 6; the scrap iron at the rear end of the tapping and drilling and part of the abrasive dust after the round angle grinding fall from the blanking hole 19.

The screw tap 2 is arranged on a processing main shaft 20 of a machine tool transmission mechanism, and the machine tool transmission mechanism is an X-axis, Y-axis and Z-axis three-axis linkage mechanism and is controlled by a personal service system.

If the internally threaded flange connection shown in fig. 7 of the specification is machined, a special tool combination is required, namely: the bottom surface of the tap 2 is coaxially provided with a drill bit 21, the top of the tap 2 is provided with a grinding disc 22, and the grinding disc 22, the tap 2 and the drill bit 21 form a cutter combination for automatic drilling, tapping and chamfering.

The cutting fluid spraying pipe 26 is arranged on the workbench 1, the inclined conveying plate 23 is arranged at the rear end of the workbench 1, and the inclined conveying plate 23 is provided with a blanking strip hole 24. The scrap iron at the rear ends of tapping and drilling and the abrasive dust after round corner grinding cannot fall from the blanking hole 19, a small amount of cutting chips on the workbench 1 are remained, the cutting chips are flushed to the conveying inclined plate 23 by the cutting fluid flowing out of the cutting fluid spray pipe 26 in the machining process, and fall from the blanking strip hole 24 of the conveying inclined plate 23 for cleaning.

And a limit stop 25 is arranged on the outer side of the rear end of the shifting head 15 of the long arc-shaped shifting strip 13. The purpose of the limit stop 25 is to prevent the workpiece to be processed at the rear side from directly sliding out from the feeding grooved rail 3 to the V-shaped positioning block 5 along the outer side of the feeding shifting bar 7.

The grinding disc 22 is an inner disc edge provided with a rounded grinding disc 28. The fillet grinding plate 28 is used for carrying out fillet chamfering on the outer edge of the flange plate.

The specific use method comprises the following steps:

when the common internal thread column workpiece shown in the attached figure 8 of the specification is subjected to tapping processing:

as shown in figures 9 to 13 of the drawings of the specification:

as shown in the attached drawing 9 of the specification, when a part (a part in the attached drawing 9 of the specification) exists on a machining station, after the part is clamped and positioned by a push block 6 and a V-shaped positioning block 5, a machining main shaft 20 of a machine tool transmission mechanism drives a screw tap 2 to rotate, three shafts of an X shaft, a Y shaft and a Z shaft of the machine tool transmission mechanism are linked to perform tool setting, and then the Z shaft moves downwards so as to tap a common internal thread column workpiece on the machining station.

After the tapping of the common internal thread column workpiece (part A) on the machining station is finished, the screw tap 2 rotates reversely to be screwed out of the common internal thread column workpiece (part A), and then moves up and retreats along the Z-axis direction. The retraction of the piston rod 12 of the servo cylinder 11 then effects the retraction of the push block 6. When the long arc-shaped poking strip 13 is pressed and held by the part side arc surface 9 on the machining station in the tapping process, the feeding spring 18 is stretched and has elasticity in the state; as shown in the process of fig. 10 and 11 of the specification, during the process of pulling back the push block 6 by the contraction of the piston rod 12 of the servo cylinder 11, the feeding shifting bar 7 is pulled to rotate along the rotation direction indicated by the arrow a in the specification, fig. 2-5, under the action of the elastic force of the feeding spring 18, so that the long arc-shaped shifting bar 13 of the feeding shifting bar 7 rotates into the notch groove 4, in the process, the tapped workpiece (a part) is shifted out of the processing station by the long arc-shaped shifting bar 13 of the feeding shifting bar 7, and the next workpiece to be processed (B part) is shifted to the push block 6 by the shifting head 15 of the feeding shifting bar 7. The limiting stop 25 prevents the workpiece (C part) to be processed at the rear side from directly sliding out to the V-shaped positioning block 5 from the feeding groove rail 3 along the outer side of the feeding shifting strip 7.

Then, as shown in the process of fig. 12 and 13 of the attached drawings of the specification, the piston rod 12 of the servo cylinder 11 is re-extended to push the push block 6 to one side of the V-shaped positioning block 5, in the process, the push block 6 pushes the next workpiece to be processed (part B) to overcome the elastic force of the feeding spring 18 to push the next workpiece to be processed to the processing station to be contacted with the V-shaped positioning block 5, in the process, the workpiece to be processed (part B) also pushes the feeding shifting bar 7 to reset, so that the shifting head 15 of the feeding shifting bar 7 resets to the outer side of the notch groove 4 again, and in the resetting process of the feeding shifting bar 7, the shifting head 15 of the feeding shifting bar 7 also pushes (part C) to slightly and adaptively move backwards from the feeding groove rail 3, so as to ensure that the shifting head 15 of the feeding shifting bar 7 smoothly resets to the outer side of the notch groove 4 again.

Then, the workpiece (B part) which is just pushed to the processing station is subjected to tapping processing.

The internal thread flange connecting piece shown in the attached figure 7 of the specification is drilled, tapped and rounded and chamfered:

as shown in the attached drawings of the specification and fig. 9 to 13 as examples, a common internal thread column workpiece is supposed to be an internal thread flange connecting piece:

as shown in the attached drawing 9 of the specification, when a part (a part in the attached drawing 9 of the specification) exists on a machining station, after the part is clamped and positioned by a push block 6 and a V-shaped positioning block 5, a machining main shaft 20 of a machine tool transmission mechanism drives a screw tap 2 to rotate, three shafts of an X shaft, a Y shaft and a Z shaft of the machine tool transmission mechanism are linked to perform tool setting, and then the Z shaft moves downwards so as to tap a common internal thread column workpiece on the machining station. When the workpiece is tapped to the lowest end of the workpiece, the fillet grinding plates 28 at the edges of the inner disc surfaces of the grinding discs 22 just grind the outer edges of the flange plates to form round chamfers.

After tapping and chamfering of the common internal thread column workpiece (part A) on the machining station, the screw tap 2 rotates reversely to unscrew from the common internal thread column workpiece (part A), and then moves up and retracts along the Z-axis direction.

Then, the transmission mechanism of the machine tool is controlled by the personal service system, so that the drill bit 21 drills holes on the flange plate one by one, and the cutter is withdrawn after all the holes are drilled. And after all the tapping, the round angle chamfering and the drilling are finished and the cutter is withdrawn, the piston rod 12 of the servo cylinder 11 contracts to realize the pull-back of the push block 6. When the long arc-shaped poking strip 13 is pressed and held by the part side arc surface 9 on the machining station in the tapping process, the feeding spring 18 is stretched and has elasticity in the state; as shown in the process of fig. 10 and 11 of the specification, during the process of pulling back the push block 6 by the contraction of the piston rod 12 of the servo cylinder 11, the feeding shifting bar 7 is pulled to rotate along the rotation direction indicated by the arrow a in the specification, fig. 2-5, under the action of the elastic force of the feeding spring 18, so that the long arc-shaped shifting bar 13 of the feeding shifting bar 7 rotates into the notch groove 4, in the process, the tapped workpiece (a part) is shifted out of the processing station by the long arc-shaped shifting bar 13 of the feeding shifting bar 7, and the next workpiece to be processed (B part) is shifted to the push block 6 by the shifting head 15 of the feeding shifting bar 7. The limiting stop 25 prevents the workpiece (C part) to be processed at the rear side from directly sliding out to the V-shaped positioning block 5 from the feeding groove rail 3 along the outer side of the feeding shifting strip 7.

Then, the workpiece (part B) which is just pushed to the processing station is subjected to tapping, round angle chamfering and drilling processing.

In summary, the following steps:

the device can realize the whole processing process of automatic feeding, clamping, positioning and tapping through the cooperative matching of the V-shaped positioning block 5, the push block 6, the feeding shifting strip 7 and the screw tap 2, thereby greatly improving the processing efficiency; and the grinding disc 22, the screw tap 2 and the drill bit 21 form a cutter combination for automatic drilling, tapping and chamfering, and for the processing of the internal thread flange connecting piece, the tapping, drilling and chamfering processes can realize synchronous processing through one cutter combination, so that the processing efficiency of the internal thread flange connecting piece is greatly improved.

Claims

1. The utility model provides an automatic change drilling tapping chamfer integral type lathe which characterized in that: comprises a feeding mechanism, an automatic feeding clamping mechanism and a screw tap (2) which are arranged on a workbench (1);

the feeding mechanism is a feeding groove rail (3), and a gap groove (4) is formed in the tail end of the side wall of one side of the feeding groove rail (3);

the automatic feeding and clamping mechanism comprises a V-shaped positioning block (5), a pushing block (6) and a feeding shifting strip (7); the V-shaped positioning block (5) is fixed on a clamping seat (8) on the workbench (1), the pushing surface of the pushing block (6) is a quarter arc surface (9), the pushing block (6) is connected with a piston rod (12) of a servo cylinder (11) through a connecting rod (10), and the V-shaped positioning block (5) corresponds to the pushing block (6); the feeding shifting strip (7) is an L-shaped shifting strip and comprises a long arc-shaped shifting strip (13) and a short arc-shaped shifting strip (14), the position of the feeding shifting strip (7) is matched with the position of the notch groove (4), a shifting head (15) is arranged on one side, away from the short arc-shaped shifting strip (14), of the long arc-shaped shifting strip (13), a material baffle plate (16) is arranged on one side of the clamping seat (8), a hole (17) which is as high as the notch groove (4) is formed in the material baffle plate (16), the joint of the long arc-shaped shifting strip (13) and the short arc-shaped shifting strip (14) penetrates through the hole (17), a feeding spring (18) is arranged on the material baffle plate (16), the other end of the feeding spring (18) is fixed at the joint of the long arc-shaped shifting strip (13) and the short arc-shaped shifting strip (14), and the tail end of the short arc-shaped shifting strip (14) is rotatably connected and arranged on the workbench (1);

a blanking hole (19) is formed in the workbench (1) between the V-shaped positioning block (5) and the pushing block (6);

the screw tap (2) is arranged on a machining main shaft (20) of a machine tool transmission mechanism, and the machine tool transmission mechanism is an X-axis, Y-axis and Z-axis three-axis linkage mechanism and is controlled by a servo system;

the bottom surface of the screw tap (2) is coaxially provided with a drill bit (21), the top of the screw tap (2) is provided with a grinding disc (22), and the grinding disc (22), the screw tap (2) and the drill bit (21) form a cutter combination for automatic drilling, tapping and chamfering;

the edge of the inner disc surface of the grinding disc (22) is provided with a round-angle grinding disc (28);

when a part exists on the machining station, the long arc-shaped poking strip (13) is pressed and held by the part side arc surface (9) on the machining station, and the feeding spring (18) is stretched in the state; when the parts on the processing station are processed, the piston rod (12) of the servo cylinder (11) contracts to realize the pull-back of the push block (6), under the action of the elastic force of the feeding spring (18), the long arc-shaped poking strip (13) of the feeding poking strip (7) rotates into the notch groove (4), the processed workpiece is poked out of the processing station by the long arc-shaped poking strip (13) of the feeding poking strip (7) in the process, the next workpiece to be processed is poked to the position of the push block (6) by the poking head (15) of the feeding poking strip (7), then the piston rod (12) of the servo cylinder (11) is stretched to realize the push of the push block (6) to one side of the V-shaped positioning block (5), in the process, the push block (6) pushes the next workpiece to be processed to overcome the elastic force of the feeding spring (18) to push the next workpiece to be processed to the processing station to be processed to be contacted with the V-shaped positioning block (5), and in the process, the workpiece to be processed also pushes the feeding poking strip (7) to reset, the shifting head (15) of the feeding shifting bar (7) is reset to the outer side of the notch groove (4).

2. The automatic drilling, tapping and chamfering integrated machine tool according to claim 1, wherein: the rear end of the workbench (1) is provided with a conveying sloping plate (23), and the conveying sloping plate (23) is provided with a blanking bar hole (24).

3. The automatic drilling, tapping and chamfering integrated machine tool according to claim 1, wherein: and a limit stop block (25) is arranged on the outer side of the rear end of the shifting head (15) of the long arc-shaped shifting strip (13).

4. The automatic drilling, tapping and chamfering integrated machine tool according to claim 1, wherein: and a cutting fluid spray pipe (26) is arranged on the workbench (1).

5. The automatic drilling, tapping and chamfering integrated machine tool according to claim 1, wherein: the bottom surface of the feeding groove rail (3) is an arc-shaped bottom surface (27).