CN113477955A

CN113477955A - Novel lathe tool clamping device

Info

Publication number: CN113477955A
Application number: CN202110921962.0A
Authority: CN
Inventors: 耿新珂
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-10-08

Abstract

The invention discloses a novel lathe tool clamping device which comprises a lower tool edge, wherein two threaded holes are formed in the four side walls of the lower tool edge, four oblique angle sliding tables are respectively fixed on the lower tool edge by two hexagon bolts penetrating through countersunk head through holes and the threaded holes, two tool setting rails are respectively processed on the four oblique angle sliding tables, and a sliding platform is a core component for adjusting the tool setting position; compared with the traditional numerical control lathe tool clamping device, the tool clamping device has the advantages that the function of adjusting the tool up and down is added, the tool setting precision can be effectively guaranteed, the operation is simple, and the use is convenient; adopt oblique angle slip table and sliding platform cooperation large tracts of land to support can alleviate the lathe tool greatly and because of the vibrations of great cutting force production at the during operation, more can improve the machining precision and prolong the lathe tool life-span, can extensively promote and use.

Description

Novel lathe tool clamping device

Technical Field

The invention relates to the technical field of numerical control machinery, in particular to a novel lathe tool clamping device.

Background

When the numerical control lathe is used for processing parts, the movement track of a cutter of the machine tool is strictly controlled according to a program instruction, and when the cutter point of the cutter is higher or lower than the rotation center of a workpiece during cutter setting, the actual movement track is not coincident with the theoretical contour track of the parts. The traditional tool clamping device of the numerical control lathe does not have the function of vertically adjusting the tool, and a gasket is added on the lower side of a tool shank under the condition that the tool setting deviation occurs generally, so that the tool tip of the turning tool reaches the rotation center of a workpiece. Sometimes the lathe tool is less than work piece centre of rotation and can only process or change the knife handle and add the gasket and just can reach work piece centre of rotation to the handle of a knife, the phenomenon that produces and work piece centre of rotation do not coincide when numerical control lathe wearing and tearing and work piece shape in the use can lead to the tool setting irregularly, though traditional tool setting adds the gasket and can solve this problem but can receive the influence of gasket thickness, often can lead to great error, and consume plenty of time and manpower, work efficiency has been reduced.

Patent No. CN201710814061.5 discloses a clamping device for lathe tool. The design is that an upper pressing plate is added below the original upper cutter edge, a lower top plate is added above the lower cutter edge, the plate and the cutter edge are connected through a screw, and the upper plate and the lower plate move along the direction of a designed sliding column through rotating screws, so that the upper position and the lower position of a turning tool are adjusted.

Although above-mentioned patent document can be through the rotation to the screw to hypoplastron makes lathe tool and work piece centre of gyration coincidence in the regulation that can be accurate, has made things convenient for user of service's work, thereby guarantees the machining precision, still has following problem: firstly, when a lathe processes a workpiece, a turning tool can generate large cutting force, and a sliding column only can limit guiding and has no supporting effect, so that only one screw is used for supporting, and thread sliding and even screw breakage can be caused under the condition of excessive cutting force; two, the fixed mode of a piece of screw is relatively poor stability, and the lathe tool can produce great vibrations at the during operation, so not only can influence the lathe tool life-span, also can influence the machining precision.

Therefore, in view of the above, research and improvement are made on the existing structure and defects, and a novel lathe tool clamping device is provided to achieve the purpose of higher practical value.

Disclosure of Invention

The invention aims to solve the problems and provides a novel lathe tool clamping device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a novel lathe tool centre gripping device, is with the lower sword along as supporting the part, two screw holes have all been seted up on the wall along four sides to the lower sword, and four oblique angle slip tables are passed countersunk head through-hole and screw hole through two pieces of hex bolts respectively and are fixed the lower sword is followed upward. The function of oblique angle slip table is for providing the support to the tool setting.

Preferably, two tool setting tracks are machined on the four oblique angle sliding tables, the sliding platform is a core component for adjusting the tool setting positions, and the sliding platform can move along the tool setting tracks on the oblique angle sliding tables through the sliding blocks. When the height of the tool is required to be adjusted, the sliding platform can be fixed only by moving the sliding platform to the opposite position and screwing two hexagon bolts. The hexagon bolt is fixed on the outer wall of the oblique angle sliding table through a threaded hole.

Preferably, the four sliding platforms are provided with limiting grooves and limiting blocks for correcting the positions of the turning tools, and the limiting grooves and the limiting blocks are used for limiting the circular cutter bar and the square cutter bar respectively. A standard threaded hole is formed in the inner hole turning cutter rod, the inner hole turning cutter is fixed on the inner hole turning cutter rod through a hexagon bolt, and the direction of the inner hole turning cutter rod is constrained by the limiting groove on the sliding platform and is always perpendicular to the rotation center of the workpiece; and a standard threaded hole is formed in the excircle turning cutter rod, the excircle turning tool is fixed on the excircle turning cutter rod through a hexagon bolt, the side wall of the excircle turning cutter rod is in contact with the limiting block on the movable platform, and the direction of the excircle turning cutter rod is constrained to be perpendicular to the center of rotation of the workpiece all the time. Therefore, the phenomenon of position deviation during tool setting can be effectively solved.

Preferably, the lower cutter edge is provided with four threaded holes along the upper end face, the upper cutter edge is provided with four through holes coaxially arranged in the four threaded holes, the connecting top plate is also provided with four counter bores coaxially arranged with the threaded holes, the upper cutter edge and the lower cutter edge are fixed together by four hexagon bolts penetrating through the counter bores, the through holes and the threaded holes, and meanwhile, the transmission shaft is connected with the lathe cutter clamping device into a whole through the top plate.

Preferably, the upper cutter is provided with three threaded holes along the wall of the four side surfaces, after the excircle turning cutter bar and the inner hole turning cutter bar are positioned, three hexagon bolts penetrate through the upper cutter along the three threaded holes until the upper cutter is tightly screwed with the excircle turning cutter bar and the inner hole turning cutter bar in a contact manner.

Preferably, the base is used for connecting the tool holding device, the transmission and the power source. A transmission cavity is formed in the base, a transmission gear is limited in a larger cavity in the transmission cavity, a gear on a toothed motor of a power source is matched with the transmission gear through a limiting counter bore, and four hexagon bolts penetrate through a motor mounting hole and a threaded hole to connect the toothed motor and the base together.

Preferably, it should be noted that the gear of the toothed motor and the motor shaft are integrated and cannot be separated. The transmission gear and the gear on the toothed motor are limited in the transmission cavity, and the positions of the transmission gear and the gear are fixed after the transmission gear and the gear are installed.

Preferably, after the transmission gear is limited, the transmission shaft fixed on the tool clamping device is connected with the transmission gear through a key groove, a flat key and a gear key groove, and the transmission gear is connected with a gear on the toothed motor, so that the tool clamping device is connected with a power source to realize tool changing.

Preferably, the engagement turntable is required to be mounted on the base before the transmission shaft is mounted, and the engagement turntable and the base are fixed through four hexagon bolt connecting through holes and threaded holes. The function of the linking turntable is to separate the fixed constraint between the cutter clamping device and the base, support the whole cutter clamping device and reduce the friction of the cutter clamping device during cutter changing rotation.

Preferably, after the engagement turntable is fixed with the base, the base and the tool clamping device are integrally connected together through four first hexagon bolts, through holes and corresponding threaded holes of the lower tool edge.

Compared with the prior art, the invention has the following advantages:

when the device works, the toothed motor receives a control center instruction to rotate to drive the transmission gear, and the transmission gear is connected with the transmission shaft through the flat key so as to drive the cutter clamping device to change the cutter. And after the cutting-off tool is turned to a corresponding station, the tool is adjusted, whether the tool point of the cutting-off tool coincides with the rotation center of the workpiece is determined, if the tool point does not coincide with the rotation center of the workpiece, the sliding platform needs to be adjusted, a worker unscrews the three eighth hexagon bolts by using a special wrench, then unscrews the two fifth hexagon bolts to enable the sliding platform to be in a movable state, contacts and limits the side wall of the outer diameter grooving tool bar with a limiting block on the sliding platform, and moves the tool point of the cutting-off tool to a proper position. The eyes observe the rotation center of the workpiece, the sliding platform moves along the tool setting track on the oblique angle sliding table through the sliding block, and when the tool tip is moved to coincide with the rotation center of the workpiece, a worker firstly screws two fifth hexagon bolts on the sliding platform in advance by hands to enable the sliding platform to be in a pre-fixed state. And observing whether the tool nose is overlapped with the rotation center of the workpiece again, and tightening the tool nose by using a special wrench if no deviation exists so as to enable the sliding platform to be in a fixed state. Secondly, the three eighth hexagon bolts are contacted and screwed with the outer diameter grooving cutter bar, compared with the traditional numerical control lathe cutter clamping device, the cutter clamping device has the advantages that the function of adjusting the cutter up and down is added, the cutter setting precision can be effectively guaranteed, the operation is simple, and the use is convenient; adopt oblique angle slip table and sliding platform cooperation large tracts of land to support can alleviate the lathe tool greatly and because of the vibrations of great cutting force production at the during operation, more can improve the machining precision and prolong the lathe tool life-span, can extensively promote and use.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a schematic view of an oblique angle sliding table according to the present invention;

FIG. 3 is an axial view of the sliding platform of the present invention shown disassembled;

FIG. 4 is a schematic axial view of the present invention;

FIG. 5 is a schematic axial view of the present invention;

FIG. 6 is a schematic view of the transmission gear mounting of the present invention;

FIG. 7 is a schematic view of a toothed motor installation of the present invention;

FIG. 8 is a schematic view of the gear drive of the present invention;

FIG. 9 is a key drive schematic of the present invention;

FIG. 10 is a schematic view of the base of the present invention installed;

FIG. 11 is a schematic view of the installation of the splice tray of the present invention.

In the figure: 1. feeding a cutter edge; 2. a first hexagon bolt; 3. a top plate; 4. a second hexagon bolt; 5. a third hexagon bolt; 6. an excircle turning tool; 7. turning an excircle cutter bar; 8. a sliding platform; 9. turning an inner hole cutter bar; 10. a fourth hexagon bolt; 11. an inner bore turning tool; 12. a lower cutter edge; 13. an oblique angle sliding table; 14. tool setting the rail; 15. a fifth hexagon bolt; 16. a drive shaft; 17. a slider; 18. cutting a cutter bar into an outer diameter; 19. a cutting knife; 20. a sixth hexagon bolt; 21. a threaded M8 hole; 22. 8mm countersunk through holes; 23. a seventh hexagon bolt; 24. a threaded M7 hole; 25. 9mm through holes; 26. a limiting groove; 27. a limiting block; 28. a countersunk hole; 29. a 10mm through hole; 30. an eighth hexagon bolt; 31. a threaded M12 hole; 32. a threaded M10 hole; 33. a transmission gear; 34. a base; 35. a transmission cavity; 36. 6mm through holes; 37. a motor with teeth; 38. a ninth hexagon bolt; 39. a threaded M5 hole; 40. limiting counter bores; 41. a flat bond; 42. a keyway; 43. a gear keyway; 44. connecting the turntables; 45. a threaded M6 hole; 46. sixteenth angle bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 2, a novel lathe tool clamping device is characterized in that a lower tool edge 12 is used as a supporting part, two M8 threaded holes 21 are formed in the four side walls of the lower tool edge 12, and four oblique angle sliding tables 13 are fixed on the lower tool edge 12 through two seventh hexagon bolts 23 penetrating through 8mm countersunk through holes 22 and M8 threaded holes 21 respectively. The bevel sliding table 13 is used for supporting the cutter;

referring to fig. 3, two tool setting rails 14 are machined on each of the four bevel sliding tables 13, the sliding platform 8 is a core component for adjusting the tool setting positions, and the sliding platform 8 can move along the tool setting rails 14 on the bevel sliding tables 13 through the sliding blocks 17. When the height of the tool setting needs to be adjusted, the sliding platform 8 can be fixed only by moving the sliding platform 8 to the opposite position and screwing two fifth hexagon bolts 15. The fifth hexagon bolt 15 is fixed on the outer wall of the bevel sliding table 13 through the M7 threaded hole 24;

referring to fig. 4, the four sliding platforms 8 are provided with a limiting groove 26 and a limiting block 27 for correcting the position of the turning tool, and respectively limit the circular cutter bar and the square cutter bar. A standard M3 threaded hole is formed in the inner hole turning cutter bar 9, the inner hole turning cutter 11 is fixed on the inner hole turning cutter bar 9 through a fourth hexagon bolt 10, and the direction of the inner hole turning cutter bar 9 is constrained by the limiting groove 26 on the sliding platform 8, so that the direction of the inner hole turning cutter bar is always perpendicular to the rotation center of the workpiece; and a standard M4 threaded hole is formed in the excircle turning cutter bar 7, the excircle turning tool 6 is fixed on the excircle turning cutter bar 7 through a third hexagon bolt 5, the side wall of the excircle turning cutter bar 7 is in contact with a limiting block 27 on the sliding platform 8, and the excircle turning cutter bar is also constrained to be always perpendicular to the rotation center of a workpiece. Therefore, the phenomenon of position deviation during tool setting can be effectively solved;

referring to fig. 1, the upper end surface of the lower blade edge 12 is provided with four M10 threaded holes 32, the upper blade edge 1 is provided with four 10mm through holes 29 coaxially arranged in the four M10 threaded holes 32, the connecting top plate 3 is also provided with four countersunk holes 28 coaxially arranged with the M10 threaded holes 32, the upper blade edge 1 and the lower blade edge 12 are fixed by four second hexagon bolts 4 penetrating through the countersunk holes 28, the 10mm through holes 29 and the M10 threaded holes 32, and the transmission shaft 16 is connected with a lathe tool clamping device into a whole through the top plate 3;

three M12 threaded holes 31 are formed in the wall of the four side surfaces of the upper cutter edge 1, after the positions of the excircle turning cutter bar 7 and the inner hole turning cutter bar 9 are determined, three eighth hexagon bolts 30 penetrate through the three M12 threaded holes 31 of the upper cutter edge 1 until the eight hexagon bolts are tightly screwed with the excircle turning cutter bar 7 and the inner hole turning cutter bar 9 in a contact manner;

referring to fig. 6 and 7, the base 34 functions to connect the tool holding device, the transmission and the power source. A transmission cavity 35 is formed in the base 34, the transmission gear 33 is limited in a larger cavity in the transmission cavity 35, then the power source toothed motor 37 matches a gear on the toothed motor 37 with the transmission gear 33 through a limiting counter bore 40, and the four ninth hexagon bolts 38 pass through the motor mounting hole and the M5 threaded holes 39 to connect the toothed motor 37 with the base 34;

referring to fig. 8, the gear of the geared motor 37 and the motor shaft are integrated and cannot be separated from each other. The transmission gear 33 and the gear on the toothed motor 37 are limited due to the inside of the transmission cavity 35, namely the positions are fixed after the installation;

referring to fig. 9, after the transmission gear 33 is limited, the transmission shaft 16 fixed on the tool holder connects the transmission shaft 16 and the transmission gear 33 through the key slot 42, the flat key 41 and the gear key slot 43, while the transmission gear 33 connects with the gear on the toothed motor 37, thereby connecting the tool holder and the power source together to realize tool changing.

It should be noted that, referring to fig. 10, the engagement turntable 44 needs to be mounted on the base 34 before the drive shaft 16 is mounted, and the engagement turntable 44 and the base 34 are fixed by connecting the four sixteenth angle bolts 46 with the 6mm through holes 36 and the M6 threaded holes 45. The function of the engagement turntable 44 is to separate the fixed constraint between the tool holding device and the base 34, support the entire tool holding device, and reduce the friction of the tool holding device during tool changing rotation;

referring to fig. 5, after the engagement rotary table 44 is fixed to the base 34, the base 34 and the tool clamping device are integrally connected together through the four first hexagon bolts 2, the sixth hexagon bolt 20, the 9mm through hole 25 and the corresponding threaded holes of the lower blade edge 12.

It should be noted that in this embodiment, the first hexagon bolt is a M9 × 20mm hexagon bolt, the second hexagon bolt is a M10 × 35mm hexagon bolt, the third hexagon bolt is a M4 × 5mm hexagon bolt, the fourth hexagon bolt is a M3 × 5mm hexagon bolt, the fifth hexagon bolt is a M7 × 15mm hexagon bolt, the sixth hexagon bolt is a M3 × 8mm hexagon bolt, the seventh hexagon bolt is a M8 × 20mm hexagon bolt, the eighth hexagon bolt is a M12 × 35mm hexagon bolt, the ninth hexagon bolt is a M5 × 15mm hexagon bolt, and the sixteenth hexagon bolt is a M6 × 20mm hexagon bolt.

The use principle of the invention is as follows:

in the scheme, when the tool changing and setting of the outer diameter grooving tool bar 18 are needed, firstly, the toothed motor 37 receives a control center instruction to rotate, the transmission gear 33 is driven, and the transmission gear 33 is connected with the transmission shaft 16 through the flat key 41, so that the tool clamping device is driven to change the tool. After the workpiece is rotated to a corresponding station, tool setting is carried out, whether the tool tip of the cutting tool 19 is overlapped with the rotation center of the workpiece is determined, and if the tool tip is not overlapped, the sliding platform 8 needs to be adjusted;

a worker unscrews the three eighth hexagon bolts 30 by using a special wrench, then unscrews the two fifth hexagon bolts 15 to enable the sliding platform 8 to be in a movable state, contacts and limits the side wall of the outer diameter grooving cutter bar 18 with the limiting block 27 on the sliding platform 8, and moves the cutter point of the cutting-off cutter 19 to a proper position;

observing the rotation center of the workpiece by eyes, moving the sliding platform 8 along a tool setting track 14 on the oblique angle sliding table 13 through a sliding block 17, and when the tool tip is moved to coincide with the rotation center of the workpiece, firstly, a worker pre-screws two fifth hexagon bolts 15 on the sliding platform 8 by hands to enable the sliding platform 8 to be in a pre-fixed state;

and observing whether the tool nose is overlapped with the rotation center of the workpiece again, and tightening the tool nose by using a special wrench if no deviation exists so as to enable the sliding platform 8 to be in a fixed state. Next, three eighth hex bolts 30 are tightened until they contact the outer diameter cutting arbor 18.

Compared with the traditional numerical control lathe tool clamping device, the tool clamping device has the advantages that the function of adjusting the tool up and down is added, the tool setting precision can be effectively guaranteed, the operation is simple, and the use is convenient; adopt oblique angle slip table 13 and sliding platform 8 cooperation large tracts of land to support can alleviate the lathe tool greatly and because of the vibrations that great cutting force produced at the during operation, more can improve the machining precision and prolong the lathe tool life-span, can extensively promote and use.

The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean "one and only one" unless specifically so stated, but rather "one or more.

Claims

1. A novel lathe tool clamping device comprises a lower tool edge (12) and a cutting tool (19), and is characterized in that two M8 threaded holes (21) are formed in the four side walls of the lower tool edge (12), four oblique angle sliding tables (13) are fixed on the lower tool edge (12) through two seventh hexagon bolts (23) penetrating through 8mm countersunk head through holes (22) and M8 threaded holes (21), two tool setting rails (14) are machined on the four oblique angle sliding tables (13), a sliding platform (8) is a core component for adjusting the tool setting positions, the sliding platform (8) can move along the tool setting rails (14) on the oblique angle sliding tables (13) through a sliding block (17), the four sliding platforms (8) are provided with limiting grooves (26) and limiting blocks (27) for correcting the tool setting positions, and limit circular tool bars and square tool bars respectively, be equipped with standard M3 screw hole on car hole cutter arbor (9), hole lathe tool (11) are fixed through fourth hex bolts (10) on car hole cutter arbor (9), be equipped with standard M4 screw hole on car excircle cutter arbor (7), excircle lathe tool (6) are fixed through third hex bolts (5) on car excircle cutter arbor (7), car excircle cutter arbor (7) lateral wall with on sliding platform (8) stopper (27) contact, the lower cutter is equipped with four M10 screw holes (32) along (12) up end, and the upper cutter is followed (1) and is equipped with four 10mm through-holes (29) at the coaxial of four M10 screw holes (32), connects roof (3) and is equipped with four countersunk hole (28) coaxial with M10 screw hole (32) equally, and it passes countersunk hole (28), 10mm through-hole (29), M10 screw hole (32) through four second hex bolts (4) will the upper cutter is followed (1) with the lower cutter is fixed along (12), simultaneously transmission shaft (16) are linked as an organic whole through roof (3) and lathe cutter clamping device, go up the sword and all seted up three M12 screw hole (31) on (1) four sides face wall, turning outer circle cutter arbor (7) with the back is confirmed to car hole cutter arbor (9) position, three eighth hex bolts (30) pass and go up sword edge (1) three M12 screw hole (31) until with turning outer circle cutter arbor (7) with the contact of car hole cutter arbor (9) is screwed up.

2. The novel lathe tool clamping device as claimed in claim 1, wherein when the height of the tool is required to be adjusted, after the sliding platform (8) is moved to the relative position, two fifth hexagon bolts (15) are screwed to fix the sliding platform (8), and the fifth hexagon bolts (15) are fixed on the outer wall of the bevel sliding table (13) through M7 threaded holes (24).

3. The novel lathe tool clamping device as claimed in claim 1, characterized in that the direction of the lathe bore tool bar (9) is constrained by the limiting groove (26) on the sliding platform (8) and is always perpendicular to the rotation center of the workpiece.

4. The novel lathe tool clamping device as claimed in claim 1, characterized in that a base (34) is used for connecting the tool clamping device, the transmission device and the power source, a transmission cavity (35) is arranged inside the base (34), the transmission gear (33) is limited in a larger cavity in the transmission cavity (35), and then the power source toothed motor (37) matches a gear on the toothed motor (37) with the transmission gear (33) through a limiting counter bore (40).

5. The new lathe tool holding apparatus as claimed in claim 4, wherein four ninth hex bolts (38) pass through the motor mounting holes and the threaded M5 holes (39) to connect the toothed motor (37) and the base (34) together.

6. The novel lathe tool clamping device is characterized in that a gear and a motor shaft on the toothed motor (37) are integrated and cannot be separated, and the transmission gear (33) and the gear on the toothed motor (37) are limited due to the inside of the transmission cavity (35), namely the position is fixed after the novel lathe tool clamping device is installed.

7. The novel lathe tool clamping device is characterized in that after the transmission gear (33) is limited, the transmission shaft (16) fixed on the tool clamping device is used for connecting the transmission shaft (16) and the transmission gear (33) together through a key groove (42), a flat key (41) and a gear key groove (43), and the transmission gear (33) is connected with a gear on a toothed motor (37).

8. A new lathe tool holding apparatus as claimed in claim 4, characterized in that the adapter dial (44) is mounted to the base (34) before the drive shaft (16) is mounted, the four sixteenth angle bolts (46) are connected with a through hole (36) of 6mm and a threaded hole (45) of M6 to fix the engaging turntable (44) and the base (34), the function of the engagement turntable (44) is to separate the fixing constraint between the tool holding device and the base (34) and to support the entire tool holding device, after the engagement turntable (44) is fixed to the base (34), the base (34), the tool clamping device and the outer diameter grooving cutter rod (18) are integrally connected together through four first hexagonal bolts (2), sixth hexagonal bolts (20), 9mm through holes (25) and corresponding threaded holes of the lower cutter edge (12).