CN219188659U

CN219188659U - Polygonal shaft turning cutterhead system

Info

Publication number: CN219188659U
Application number: CN202320035350.6U
Authority: CN
Inventors: 罗红波; 李涛
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-06-16
Anticipated expiration: 2033-01-06

Abstract

The utility model relates to a polygonal shaft turning cutterhead system which comprises a numerical control machine tool, a workpiece main shaft, a main shaft motor, a cutterhead, a transmission mechanism and a cutterhead motor, wherein the main shaft motor and the cutterhead motor are oppositely arranged on the numerical control machine tool, the workpiece main shaft is connected to an output shaft of the main shaft motor, the cutterhead is connected with the output shaft of the cutterhead motor through the transmission mechanism, the rotation directions of the workpiece main shaft and the cutterhead are the same, and a variable speed control assembly is arranged between the workpiece main shaft and the cutterhead motor. The utility model has the advantages that: the polygonal part can be processed and molded once, the cutter head is stable in structure, the cutter is fast and reliable to install, and the processing efficiency and the processing precision are improved.

Description

Polygonal shaft turning cutterhead system

Technical Field

The utility model belongs to the technical field of machining, and particularly relates to a polygonal shaft turning cutterhead system.

Background

In the machine-building industry, square-section parts are often used, such as oil-jet body series parts and compact series parts in the oil-pump nozzle industry, polygonal shafts, etc. The polyhedron can be used for replacing common keys, splines, pins and the like for connection to transmit torque. The square section part can be automatically centered, compared with a combined connection mode of a round shaft and a key, the eccentric and concentrated stress is not easy to generate, and the square section part has important effects of improving the overall connection performance, improving the durability and prolonging the service life of the part combination. The square section has special properties which are not possessed by the round section, and is more suitable for specific occasions.

The traditional mechanical transmission type machine tool is characterized in that a branch is needed to be separated on the basis of a primary power driving main shaft to drive a rotary cutter disc, and particularly, the power is led out of a main shaft box to be connected with a universal transmission shaft, the universal transmission shaft is connected with a cutter disc box and drives the cutter disc to rotate through a gear, so that the transmission shaft from the main shaft box of the machine tool to the cutter disc box is increased, the gear is also increased on the basis of the primary machine tool to match the transmission ratio, the problems of new mechanical vibration, matching and the like are solved, and the power of the machine tool is reduced. The milling machine with the indexing device is used for milling different square planes, the processing method of the indexing milling has the advantages of higher cost, low processing efficiency, general product surface finish, lower processing efficiency and processing precision of the indexing milling, and incapacity of appearing in mass production, and time and labor cost can be increased.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a polygonal shaft turning cutter head system which can carry out one-time machining forming on polygonal parts, has a stable cutter head structure, is rapid and reliable in cutter installation and improves machining efficiency and machining precision.

The aim of the utility model is achieved by the following technical scheme:

the utility model provides a polygonal axle turning cutterhead system, includes digit control machine tool, work piece main shaft, main shaft motor, cutterhead, drive mechanism and cutterhead motor, and main shaft motor and cutterhead motor set up relatively on digit control machine tool, and the work piece main shaft connects on the output shaft of main shaft motor, and the cutterhead passes through drive mechanism and cutterhead motor's output shaft, and the rotation direction of work piece main shaft and cutterhead is the same, is equipped with variable speed control assembly between work piece main shaft and the cutterhead motor.

Further, the cutter head comprises a rotating disc, an adjusting plate, clamping pieces and cutter bars, the adjusting plate is arranged in the middle of the rotating disc, the clamping pieces are arranged in a plurality of ways around the adjusting plate, the clamping pieces are circumferentially arranged on the rotating disc around the rotating center line of the rotating disc, the cutter bars are arranged on the clamping pieces, the axial lines of the cutter bars are located in the radial direction of the rotating disc, the cutter bars can move along the radial direction of the rotating disc, and radial adjusting screws used for limiting movement of the cutter bars are arranged on the adjusting plate.

Further, the clamping piece comprises a first clamping block and a second clamping block which are arranged on the rotating disc, the cutter bar is arranged between the first clamping block and the second clamping block, and a cutter pressing screw for pressing the cutter bar on the first clamping block is arranged on the second clamping block.

Further, the transmission mechanism comprises a transmission case, a first transmission shaft, a second transmission shaft, a third transmission shaft and a fourth transmission shaft which are arranged in the transmission case, the transmission case is arranged on the numerical control machine tool, the first transmission shaft, the second transmission shaft, the third transmission shaft and the fourth transmission shaft are sequentially transmitted, the first transmission shaft is connected with an output shaft of the cutterhead motor, and the fourth transmission shaft penetrates out of the transmission case and is connected with the rotating disc.

Further, a first transmission gear is arranged on the first transmission shaft, a second transmission gear and a third transmission gear are arranged on the second transmission shaft, a fourth transmission gear and a fifth transmission gear are arranged on the third transmission shaft, a sixth transmission gear is arranged on the fourth transmission shaft, the second transmission gear is meshed with the first transmission gear, the fourth transmission gear is meshed with the third transmission gear, and the sixth transmission gear is meshed with the fifth transmission gear.

Further, the variable speed control assembly comprises a main encoder, a feedback encoder and a servo driver, wherein the main encoder is arranged on the workpiece spindle and is electrically connected with the servo driver, and the feedback encoder is arranged on the cutter motor and is electrically connected with the cutter motor.

The utility model has the following advantages:

1. through setting up of holder and regulating plate, can the multitool utensil stabilize the centre gripping and prevent that the blade disc from producing the decentration in rotating, can adjust the radial position of cutter simultaneously to the cutting operation of cutter, blade disc overall structure is stable, and the cutter installation is swift reliable.

2. Through the setting of drive mechanism, can enlarge the output torque of blade disc motor, and then make the cutter possess sufficient cutting force.

3. Through the setting of variable speed control assembly, can monitor the rotational speed of work piece main shaft and blade disc to guarantee the steady operation of cutter motor, the rotational speed of adjustable blade disc is the integral multiple of the rotational speed of work piece main shaft simultaneously, and then realizes the disposable machine-shaping to the polygon part.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic front view of the overall structure of the cutterhead, the transmission mechanism and the cutterhead motor in the utility model;

FIG. 3 is a right side schematic view of the overall structure of the cutterhead, the transmission mechanism and the cutterhead motor in the utility model;

FIG. 4 is a schematic left-hand view of the overall structure of the cutterhead, transmission mechanism and cutterhead motor of the present utility model;

FIG. 5 is a schematic cross-sectional view taken along the direction A-A in FIG. 4;

FIG. 6 is a schematic cross-sectional view of the structure of FIG. 4 taken along the direction B-B;

in the figure: 1. a numerical control machine tool; 2. a workpiece spindle; 3. a spindle motor; 4. a cutterhead; 41. a rotating disc; 42. an adjustment plate; 43. a clamping member; 431. a first clamping block; 432. a second clamping block; 433. a cutter pressing screw; 44. a cutter bar; 45. radial adjusting screws; 5. a transmission mechanism; 51. a transmission case; 52. a first drive shaft; 53. a second drive shaft; 54. a third drive shaft; 55. a fourth drive shaft; 6. a cutter motor; 7. a first transmission gear; 8. a second transmission gear; 9. a third transmission gear; 10. a fourth transmission gear; 11. a fifth transmission gear; 12. and a sixth transmission gear.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following.

As shown in fig. 1-6, a polygonal shaft turning cutterhead system comprises a numerical control machine tool 1, a workpiece main shaft 2, a main shaft motor 3, a cutterhead 4, a transmission mechanism 5 and a cutterhead motor 6, wherein the main shaft motor 3 and the cutterhead motor 6 are oppositely arranged on the numerical control machine tool 1, the workpiece main shaft 2 is connected to an output shaft of the main shaft motor 3 through a connecting piece such as a coupler, the cutterhead 4 is connected with the output shaft of the cutterhead motor 6 through the transmission mechanism 5, and then the cutterhead 4 is electrically rotated through the cutterhead motor 6.

Specifically, as shown in fig. 2 and 3, the cutterhead 4 includes a rotating disc 41, an adjusting plate 42, clamping members 43 and a cutter bar 44, wherein the adjusting plate 42 is fixed in the middle of the rotating disc 41 by screws, the clamping members 43 are provided with a plurality of clamping members 43, the plurality of clamping members 43 are arranged around the adjusting plate 42, the plurality of clamping members 43 are circumferentially arrayed on the rotating disc 41 around the rotation center line of the rotating disc 41, the cutter bar 44 is arranged on the clamping members 43, a cutting knife can be mounted on the cutter bar 44 to assemble a cutter, and the circumferential array of the clamping members 43 can prevent the cutterhead 4 from being eccentric in the rotation process, thereby affecting the processing precision. The clamping piece 43 comprises a first clamping block 431 and a second clamping block 432 which are fixed on the rotating disc 41, the cutter bar 44 is clamped between the first clamping block 431 and the second clamping block 432, and the second clamping block 432 is provided with a cutter pressing screw 433 which presses the cutter bar 44 against the first clamping block 431; the axis of the cutter bar 44 is located in the radial direction of the rotary disk 41, the cutter bar 44 is movable in the radial direction of the rotary disk 41, and a radial adjusting screw 45 for limiting movement of the cutter bar 44 is provided on the adjusting plate 42. When the cutter is installed, the radial position of the cutter bar 44 is adjusted by adjusting the radial adjusting screw 45, so that the cutter can cut better, the cutter bar 44 is abutted against the radial adjusting screw 45, and then the cutter bar 44 is fixed by the cutter pressing screw 433, so that the installation process is rapid and reliable.

As shown in fig. 4, 5 and 6, the transmission mechanism 5 includes a transmission case 51, a first transmission shaft 52, a second transmission shaft 53, a third transmission shaft 54 and a fourth transmission shaft 55, the transmission case 51 is fixed on the numerically controlled machine tool 1, and the first transmission shaft 52, the second transmission shaft 53, the third transmission shaft 54 and the fourth transmission shaft 55 are all installed in the transmission case 51 through bearings. The first transmission shaft 52 is provided with a first transmission gear 7, the second transmission shaft 53 is provided with a second transmission gear 8 and a third transmission gear 9, the third transmission shaft 54 is provided with a fourth transmission gear 10 and a fifth transmission gear 11, the fourth transmission shaft 55 is provided with a sixth transmission gear 12, wherein the second transmission gear 8 is meshed with the first transmission gear 7, the fourth transmission gear 10 is meshed with the third transmission gear 9, and the sixth transmission gear 12 is meshed with the fifth transmission gear 11. The first transmission shaft 52 is connected with an output shaft of the cutterhead motor 6 through a coupling, the fourth transmission shaft 55 penetrates out of the transmission box 51 and is fixedly connected with the rotating disc 41, the cutterhead motor 6 drives the first transmission shaft 52 to rotate, the rotating disc 41 is driven to rotate through the first transmission shaft 52, the second transmission shaft 53, the third transmission shaft 54 and the fourth transmission shaft 55 in sequence, and finally the fourth transmission shaft 55 drives the rotating disc 41 to rotate, in the transmission process, speed change is achieved through the first transmission gear 7, the second transmission gear 8, the third transmission gear 9, the fourth transmission gear 10, the fifth transmission gear 11 and the sixth transmission gear 12, and then output torque of the cutterhead motor 6 is increased, so that the rotating disc 41 obtains enough rotating speed, and finally a cutter has enough cutting force.

In order to facilitate the processing and operation control, the rotation directions of the workpiece spindle 2 and the cutter head 4 are set to be the same, a variable speed control component is arranged between the workpiece spindle 2 and the cutter head motor 6, and the cutter head motor 6 is preferably a servo motor. The variable speed control assembly comprises a main encoder, a feedback encoder and a servo driver, wherein the main encoder is arranged on the workpiece spindle 2 and is electrically connected with the servo driver, and the feedback encoder is arranged on the cutter motor 6 and is electrically connected with the cutter motor 6. The main encoder monitors the rotating speed of the workpiece main shaft 2, then transmits the monitored rotating speed signal to the servo driver, and further drives the cutter head motor 6 to operate at integral multiple of the rotating speed of the workpiece main shaft 2 through the servo driver, and finally realizes one-time processing of polygonal parts by combining the same rotating direction of the workpiece main shaft 2 and the cutter head 4. When the cutterhead motor 6 runs, the feedback encoder monitors the rotating speed of the cutterhead motor 6 and feeds back the monitored rotating speed signal to the servo driver to form local closed-loop control, so that the rotating speed of the cutterhead motor 6 can be kept stable, and the running stability and the machining precision of equipment are improved.

Finally, while the foregoing description has shown and described embodiments of the present utility model, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A polygonal shaft turning cutterhead system, characterized in that: including digit control machine tool (1), work piece main shaft (2), main shaft motor (3), blade disc (4), drive mechanism (5) and blade disc motor (6), main shaft motor (3) and blade disc motor (6) set up relatively on digit control machine tool (1), work piece main shaft (2) connect on the output shaft of main shaft motor (3), output shaft of blade disc motor (6) is passed through drive mechanism (5) to blade disc (4), the rotation direction of work piece main shaft (2) and blade disc (4) is the same, be equipped with variable speed control subassembly between work piece main shaft (2) and the blade disc motor (6).

2. The polygonal shaft turning cutterhead system of claim 1, wherein: the cutter disc (4) comprises a rotating disc (41), an adjusting plate (42), clamping pieces (43) and cutter bars (44), wherein the adjusting plate (42) is arranged in the middle of the rotating disc (41), the clamping pieces (43) are arranged in a plurality, the clamping pieces (43) are arranged around the adjusting plate (42), the clamping pieces (43) are circumferentially arrayed on the rotating disc (41) around the rotating center line of the rotating disc (41), the cutter bars (44) are arranged on the clamping pieces (43) and the axial lines of the cutter bars (44) are located in the radial direction of the rotating disc (41), the cutter bars (44) can move along the radial direction of the rotating disc (41), and radial adjusting screws (45) used for limiting the movement of the cutter bars (44) are arranged on the adjusting plate (42).

3. The polygonal shaft turning cutterhead system of claim 2, wherein: the clamping piece (43) comprises a first clamping block (431) and a second clamping block (432) which are arranged on the rotating disc (41), the cutter bar (44) is arranged between the first clamping block (431) and the second clamping block (432), and a cutter pressing screw (433) for pressing the cutter bar (44) on the first clamping block (431) is arranged on the second clamping block (432).

4. The polygonal shaft turning cutterhead system of claim 2, wherein: the transmission mechanism (5) comprises a transmission case (51) and a first transmission shaft (52), a second transmission shaft (53), a third transmission shaft (54) and a fourth transmission shaft (55) which are arranged in the transmission case (51), wherein the transmission case (51) is arranged on the numerical control machine tool (1), the first transmission shaft (52), the second transmission shaft (53), the third transmission shaft (54) and the fourth transmission shaft (55) are sequentially transmitted, the first transmission shaft (52) is connected with an output shaft of the cutter motor (6), and the fourth transmission shaft (55) penetrates out of the transmission case (51) and is connected with the rotating disc (41).

5. The polygonal shaft turning cutterhead system of claim 4, wherein: be equipped with first drive gear (7) on first transmission shaft (52), be equipped with second drive gear (8) and third drive gear (9) on second transmission shaft (53), be equipped with fourth drive gear (10) and fifth drive gear (11) on third transmission shaft (54), be equipped with sixth drive gear (12) on fourth transmission shaft (55), second drive gear (8) and first drive gear (7) meshing, fourth drive gear (10) and third drive gear (9) meshing, sixth drive gear (12) and fifth drive gear (11) meshing.

6. The polygonal shaft turning cutterhead system of claim 1, wherein: the variable speed control assembly comprises a main encoder, a feedback encoder and a servo driver, wherein the main encoder is arranged on the workpiece spindle (2) and is electrically connected with the servo driver, and the feedback encoder is arranged on the cutter motor (6) and is electrically connected with the cutter motor (6).