CN116275216A - Spiral hole milling unit with independent feeding of rotation mechanism and hole milling method thereof - Google Patents

Spiral hole milling unit with independent feeding of rotation mechanism and hole milling method thereof Download PDF

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Publication number
CN116275216A
CN116275216A CN202310131072.9A CN202310131072A CN116275216A CN 116275216 A CN116275216 A CN 116275216A CN 202310131072 A CN202310131072 A CN 202310131072A CN 116275216 A CN116275216 A CN 116275216A
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China
Prior art keywords
revolution
hole
rotation
eccentric
cylinder body
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CN202310131072.9A
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Chinese (zh)
Inventor
单以才
阎舜
杨吟飞
何宁
李亮
苏永生
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Nanjing Xiaozhuang University
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Nanjing Xiaozhuang University
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Priority to CN202310131072.9A priority Critical patent/CN116275216A/en
Publication of CN116275216A publication Critical patent/CN116275216A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
    • B23Q15/22—Control or regulation of position of tool or workpiece
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

The invention discloses a spiral hole milling unit with an independent feeding rotation mechanism and a hole milling method thereof, wherein the spiral hole milling unit with the independent feeding rotation mechanism comprises a combined bracket, the rotation mechanism, a hole making cutter, a revolution mechanism, an eccentric adjusting mechanism and an independent feeding mechanism. The spiral milling hole unit with the independent feeding of the rotation mechanism enables the revolution mechanism and the eccentric adjusting mechanism not to feed along with the rotation mechanism by utilizing the independent feeding mechanism, thereby being beneficial to reducing the power consumption of a feeding driving motor, reducing the size and the weight of the spiral milling hole unit and avoiding the movement interference of the revolution mechanism and the eccentric adjusting mechanism with the surrounding environment during the feeding movement; the feeding mechanism drives the autorotation mechanism to independently axially move, so that the axial feeding of the hole making cutter is realized, the feeding movement direction is consistent with the central axis of the cutter, and the hole machining precision is ensured.

Description

Spiral hole milling unit with independent feeding of rotation mechanism and hole milling method thereof
Technical Field
The invention relates to a hole milling device, in particular to a spiral hole milling unit with an independent feeding rotation mechanism and a hole milling method thereof.
Background
With the continuous advancement of the spiral hole milling technology in the field of aviation manufacturing in China, the demands of robotic spiral hole milling technical equipment are becoming urgent. Because the industrial robot body has inherent defects of low bearing, low rigidity and the like, the spiral hole milling unit is used as a hole milling terminal of the robot spiral hole milling, and the innovative design surrounding the light weight and the integrated function is always a research hot spot of domestic students. The existing spiral hole milling unit mainly comprises a rotation mechanism, a revolution mechanism, an eccentric adjusting mechanism and the like of a cutter. According to research and analysis, the existing spiral milling hole unit model scheme mostly adopts a screw rod transmission axial feeding mechanism, and the feeding mechanism drives a revolution mechanism and an eccentric adjusting mechanism to feed along with a rotation mechanism. The machine type scheme has remarkable pushing effect on the successful application of the spiral hole milling technical equipment in the field of aviation manufacture in China, but has some defects: because the screw rod transmission is adopted to realize axial feeding, the axial feeding direction is inconsistent with the central axis of the cutter, the machining precision of the hole is affected to a certain extent, and the whole size of the spiral milling hole unit is larger; because the revolution mechanism and the eccentric adjusting mechanism feed along with the rotation mechanism, the power consumption of the axial feeding driving device is increased, the size and the weight of the spiral milling hole unit are inconvenient to reduce, and the problems that the revolution mechanism, the eccentric adjusting mechanism and the surrounding environment are interfered in a movement manner are also caused.
Disclosure of Invention
The invention aims to: the spiral hole milling unit with the rotation mechanism capable of feeding independently and the hole milling method thereof can reduce power consumption, avoid motion interference between the revolution mechanism and the eccentric adjusting mechanism and surrounding environment during feeding movement, enable the feeding motion direction to be consistent with the central axis of the cutter, and help to ensure the machining precision of holes.
The technical scheme is as follows: the invention relates to a spiral hole milling unit with an independent feeding function by a rotation mechanism, which comprises a combined bracket, the rotation mechanism, a revolution mechanism, an eccentric adjusting mechanism and an independent feeding mechanism, wherein the combined bracket is provided with a plurality of spiral holes;
the revolution mechanism, the eccentric adjusting mechanism and the independent feeding mechanism are all arranged on the combined bracket; the front end of the autorotation mechanism is used for installing a hole making cutter; the rotation mechanism is arranged on the revolution mechanism and is used for driving the hole making cutter to rotate, and the revolution mechanism drives the rotation mechanism to revolve; the eccentric adjusting mechanism drives the autorotation mechanism to perform eccentric adjustment; the independent feeding mechanism drives the autorotation mechanism to feed.
Further, the combined bracket comprises a bottom plate, a front support, a rear support and an adapter; the front support, the rear support and the adapter are respectively fixed on the front end, the middle part and the rear end of the bottom plate; the front support and the rear support are used for installing the revolution mechanism; the adapter is used for installing independent feed mechanism.
Further, the rotation mechanism comprises a rotation driving motor and a cutter bar; the rotation driving motor is arranged on the eccentric adjusting mechanism; the rear end of the cutter bar is in butt joint with the output shaft of the autorotation driving motor; the front end of the cutter bar is used for detachably mounting a hole making cutter.
Further, the revolution mechanism comprises a revolution driving motor and a revolution cylinder; the revolution cylinder is rotatably arranged on the combined bracket; the revolution driving motor is arranged on the combined bracket and drives the revolution cylinder to rotate through the internal gear pair.
Further, the eccentric adjusting mechanism comprises an offset adjusting driving component, an outer cylinder body, an inner cylinder body, two axial sliding seats and two rotary lining cylinders; the outer cylinder body is radially and adjustably arranged on the revolution cylinder body, and the inner cylinder body is fixed in the outer cylinder body; the autorotation mechanism is rotatably arranged on the inner cylinder; a radial sliding plate is axially arranged on the outer side surface of the outer cylinder body; two kidney-shaped holes are arranged on the radial sliding plate and distributed in a splayed shape; the two rotary lining cylinders are both sleeved on the revolution cylinder in a sliding manner; the two axial sliding seats are respectively coaxially and rotatably arranged on the outer side walls of the two rotary lining cylinders; the deflection adjusting driving component is arranged on the combined bracket and used for driving the two axial sliding seats to move relatively; an inward extending connecting rod penetrating through the revolution cylinder body is arranged on the inner side wall of each rotary lining cylinder; the ends of the two inward extending connecting rods are respectively provided with a roller which walks along the corresponding side waist-shaped holes.
Further, two guide rods which penetrate through the two axial sliding seats in a sliding manner are fixed on the combined support; a guide key is axially arranged on the outer side surface of the revolution cylinder; the inner side walls of the two rotary lining cylinders are respectively provided with an axial chute which is in sliding fit with the guide key.
Further, a plurality of radial rolling assemblies which are uniformly distributed along the radial direction are arranged between the axial sliding seat and the rotary lining cylinder.
Further, the inclination angle between the two kidney-shaped holes and the central axis of the outer cylinder body is equal.
Further, the independent feeding mechanism comprises a feeding driving assembly, an Oldham coupling and a transition rotating shaft; the self-rotation mechanism is screwed on the inner cylinder body; a worm wheel shaft is rotatably arranged on the rear side of the combined bracket; the feeding driving component is arranged on the combined bracket and used for driving the worm wheel shaft to rotate; the front end of the worm wheel shaft is butted with the rear end of the transition rotating shaft through an Oldham coupling; the front end of the transition rotating shaft extends into the outer cylinder; the rear end of the autorotation mechanism is connected with the transition rotating shaft through a spline to realize rotation transmission.
Further, the invention also provides a hole milling method of the spiral hole milling unit with the rotation mechanism feeding independently, comprising the following steps: step 1, zeroing before spiral hole milling, and adjusting an eccentric adjusting mechanism to be zero so as to enable a rotation mechanism to be positioned at a non-eccentric position relative to a revolution mechanism, wherein the eccentric amount e of a hole making cutter is equal to the eccentric amount e of the hole making cutter 0 Zero;
step 2, the eccentric adjusting mechanism firstly carries out eccentric adjustment of the rotation mechanism, and the specific implementation steps are as follows:
A. according to the diameter D of the hole to be made H Diameter d of hole making tool t Calculating the eccentric amount e of the hole making cutter, namely e= (D) H -d t ) 2; calculating a corresponding control angle theta by combining structural parameters and position relations of the eccentric adjusting mechanism；
B. Starting an eccentric adjusting mechanism to adjust the hole making cutter to a required position according to the control angle theta, and finishing eccentric adjustment of the hole making cutter before spiral hole milling;
and 3, cooperatively completing the machining operation of the spiral milling hole by a revolution mechanism, an independent feeding mechanism and a rotation mechanism, wherein the specific implementation steps are as follows:
C. firstly, adjusting a spiral hole milling unit to a required pose during hole processing;
D. starting an autorotation mechanism to drive the hole making cutter to autorotate;
E. starting a revolution mechanism, and driving the hole making cutter to revolve under the constraint of the eccentric adjusting mechanism;
F. starting an independent feeding mechanism, and driving the autorotation mechanism to independently feed under the common constraint of the eccentric adjusting mechanism and the independent feeding mechanism until the hole is machined;
G. firstly stopping the rotation mechanism, the revolution mechanism and the independent feeding mechanism; then, under the drive of a robot, the hole making cutter is adjusted to be coaxial with the processed hole; finally, the hole making cutter is adjusted back to zero position through an independent feeding mechanism;
step 4, when the holes with the same aperture are continuously machined, repeatedly executing the step 3 until the robot finishes machining all the holes of the wheel; and (3) when the holes with different hole diameters continue to be processed, repeatedly executing the step (1), the step (2) and the step (3) until all the holes are processed.
Compared with the prior art, the invention has the beneficial effects that: the independent feeding mechanism is utilized to ensure that the revolution mechanism and the eccentric adjusting mechanism do not need to feed along with the rotation mechanism, thereby being beneficial to reducing the power consumption of a feeding driving motor, reducing the size and the weight of the spiral milling hole unit and avoiding the movement interference of the revolution mechanism and the eccentric adjusting mechanism with the surrounding environment during the feeding movement; the feeding mechanism drives the autorotation mechanism to independently axially move, so that the axial feeding of the hole making cutter is realized, the feeding movement direction is consistent with the central axis of the cutter, and the hole machining precision is ensured.
Drawings
FIG. 1 is a right side view of the present invention;
FIG. 2 is an assembled perspective view of the composite stand of the present invention;
FIG. 3 is an assembled perspective view of the rotation mechanism of the present invention;
fig. 4 is an assembled perspective view of the revolution mechanism and the combination holder of the present invention;
FIG. 5 is a cross-sectional view of the present invention in a non-eccentric position;
FIG. 6 is a cross-sectional view of the present invention in a maximum eccentric position;
FIG. 7 is a perspective view of the present invention;
fig. 8 is an assembled perspective view of the revolution cylinder and the driven ring gear of the present invention;
FIG. 9 is a perspective view of a rotary liner of the present invention;
fig. 10 is a perspective view of the radial roller assembly of the present invention.
Detailed Description
The technical scheme of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be understood that the terms "left", "right", "front", "rear", "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1:
as shown in fig. 1 to 10, the spiral hole milling unit with the independent feeding of the rotation mechanism disclosed by the invention comprises: a combined bracket 1000, a rotation mechanism 2000, a revolution mechanism 3000, an eccentric adjustment mechanism 4000 and an independent feeding mechanism 5000;
the revolution mechanism 3000, the eccentric adjusting mechanism 4000 and the independent feeding mechanism 5000 are all arranged on the combined bracket 1000; the front end of the rotation mechanism 2000 is used for installing a hole making cutter 2300; the rotation mechanism 2000 is mounted on the revolution mechanism 3000, and is used for driving the hole making cutter 2300 to rotate when the hole is spirally milled, and the revolution mechanism 3000 drives the rotation mechanism 2000 to revolve when the hole is spirally milled; the eccentric adjusting mechanism 4000 is used for driving the rotation mechanism 2000 to perform eccentric adjustment before spiral hole milling; the independent feeding mechanism 5000 is used for driving the rotation mechanism 2000 to perform independent feeding during spiral hole milling.
The independent feeding mechanism 5000 is utilized to enable the revolution mechanism 3000 and the eccentric adjusting mechanism 4000 not to feed along with the rotation mechanism 2000, so that the power consumption of the feeding driving motor 5100 is reduced, the size and the weight of the spiral milling hole unit are reduced, and the movement interference of the revolution mechanism 3000 and the eccentric adjusting mechanism 4000 and the surrounding environment during feeding movement can be avoided; the feeding mechanism 5000 is utilized to drive the rotation mechanism 2000 to independently axially move, so that the axial feeding of the hole making cutter 2300 is realized, the feeding movement direction is consistent with the central axis of the cutter, and the machining precision of holes is ensured.
Further, the combined bracket 1000 includes a bottom plate 1100, a front support 1200, a rear support 1300, and an adapter 1400; the front support 1200, the rear support 1300 and the adaptor 1400 are respectively fixed on the front end, the middle part and the rear end of the bottom plate 1100, and the adaptor 1400 is used for being connected with the tail end of the robot through the connecting flange 1500; the revolution mechanism 3000 is supported by the rear mount 1300 together with the front mount 1200; the adapter 1400 is used to mount a separate feed mechanism 5000.
With the fixed mounting structure among the base plate 1100, the front mount 1200, the rear mount 1300, and the adapter 1400, stable support is provided for the revolution mechanism 3000 and the independent feeding mechanism 5000, preventing movement interference of the revolution mechanism 3000 with the surrounding environment during feeding movement.
Further, the rotation mechanism 2000 includes a rotation driving motor 2100 and a cutter bar 2200; the rotation driving motor 2100 is installed on the eccentric adjusting mechanism 4000; the output shaft of the rotation driving motor 2100 is coaxially butted with the rear end of the cutter bar 2200; a collet chuck for clamping the boring cutter 2300 and a union nut are mounted on the front end of the cutter bar 2200 to achieve detachable mounting.
The cutter bar 2200 is driven to rotate by the rotation driving motor 2100, so that the rotation requirement of the hole making cutter 2300 during hole milling is met; the hole making cutter 2300 is matched and clamped by the spring chuck and the tightening nut, so that the hole making cutter 2300 is convenient to maintain or replace.
Further, the revolution mechanism 3000 includes a revolution driving motor 3100, a driving gear 3300, a driven ring gear 3400, and a revolution cylinder 3500; the revolution cylinder 3500 is rotatably installed on the front supporter 1200 and the rear supporter 1300; the revolution driving motor 3100 is installed on the rear side of the base plate 1100 through the first bearing housing 3200, and the driving gear 3300 is installed on an output shaft of the revolution driving motor 3100; the driven ring gear 3400 is coaxially fixed on the rear end of the revolution cylinder 3500 and is engaged with the driving gear 3300.
The driving gear 3300 is driven to rotate by the revolution driving motor 3100, so that the driven annular gear 3400 drives the revolution cylinder 3500 to rotate, and the revolution requirement of the hole making cutter 2300 during hole milling is met.
Further, the eccentric adjustment mechanism 4000 comprises an offset drive assembly, an outer cylinder 4500, an inner cylinder 4600, two axial slide carriages 4300, and two rotary bushings 4400; the offset driving assembly comprises an offset driving motor 4100 and a second screw 4200;
radial sliding grooves 3510 intersecting with the rotation center line are arranged on two end faces of the revolution barrel 3500, and the two radial sliding grooves 3510 are parallel and correspond to each other in position; the outer cylinder 4500 penetrates through the revolution cylinder 3500, and radial sliding blocks 4510 slidably installed in the corresponding side radial sliding grooves 3510 are respectively provided at both ends of the outer cylinder 4500; the inner cylinder 4600 is coaxially fixed within the outer cylinder 4500; the rotation driving motor 2100 is rotatably installed in the inner cylinder 4600; a radial sliding plate 4800 is axially arranged on the outer side surface of the outer cylinder 4500; two kidney-shaped holes 4810 are arranged on the radial sliding plate 4800, and the two kidney-shaped holes 4810 are distributed in a splayed shape;
the two rotary lining cylinders 4400 are both sleeved on the revolution cylinder 3500 between the front support 1200 and the rear support 1300 in a sliding manner; two axial carriages 4300 are respectively and coaxially installed on the outer side walls of the two rotary bushings 4400;
the offset driving motor 4100 is installed on the rear support 1300; the rear end of the second screw 4200 is butted on the output shaft of the offset driving motor 4100, the front end penetrates through the rear support 1300 and is rotatably arranged on the front support 1200, and the driving threads on the front side and the rear side of the second screw 4200 are opposite in rotation direction and equal in screw pitch; two axial sliding bases 4300 are respectively screwed on the front side and the rear side of the second screw 4200 in a penetrating way;
a long hole is axially provided on the revolution cylinder 3500; an inward extending connecting rod 4410 penetrating through the strip hole is arranged on the inner side wall of each rotary lining cylinder 4400; a roller 4420 is mounted on the ends of both inwardly extending links 4410 to travel along the corresponding side kidney aperture 4810.
The second screw rod 4200 is driven to rotate by the offset driving motor 4100, and as the driving screw threads of the second screw rod 4200 rotate in opposite directions and have equal screw pitches, the two axial sliding bases 4300 are driven by the second screw rod 4200 to approach or separate from each other, so that the two rotary lining cylinders 4400 drive the rollers 4420 on the two inward extending connecting rods 4410 to approach or separate from the two kidney-shaped holes 4810, and because the two kidney-shaped holes 4810 are distributed in a splayed manner, the radial sliding plate 4800 can drive the outer cylinder 4500 to move radially, and the outer cylinder 4500 and the inner cylinder 4600 realize the requirement of driving the rotation mechanism 2000 to move radially so as to adjust the eccentricity of the hole making cutter 2300; by utilizing the cooperation between the radial sliding groove 3510 and the radial sliding block 4510, the movement direction of the outer cylinder 4500 is limited and guided, and a stable installation environment is provided for the outer cylinder 4500.
Further, two guide rods 4700 which slidably penetrate through the two axial sliding bases 4300 are fixedly connected between the front support 1200 and the rear support 1300; two guide keys 3600 are axially arranged on the outer side surface of the revolution cylinder 3500; an axial sliding groove 4430 in sliding fit with the guide key 3600 is provided on the inner side walls of both the rotary bushings 4400. The rotary bushing 4400 can rotate along with the revolution cylinder 3500 by sliding the guide rod 4700 through the axial slide 4300 and the guide key 3600 and the axial chute 4430, and the axial slide 4300 does not rotate along with the rotary bushing 4400 but can adjust the axial position of the rotary bushing 4400.
Further, a plurality of radial rolling assemblies 4900 uniformly distributed along the radial direction are also arranged between the axial slide 4300 and the rotary liner 4400; radial roller assembly 4900 includes a stub shaft 4910 and a roller bearing 4920; an outer annular groove 4440 is provided on the outer side wall of the rotary liner 4400; one end of the stub shaft 4910 is fixed to the axial slider 4300, a rolling bearing 4920 is inserted on the other end of the stub shaft 4910, and the rolling bearing 4920 is fitted in the outer annular groove 4440 in an embedded manner. Synchronous axial movement of the rotary bushing 4400 and the axial slide 4300 is achieved by the radial rolling assembly 4900, and meanwhile friction between the rotary bushing 4400 and the axial slide 4300 is small due to cooperation between the rolling bearing 4920 and the outer annular groove 4440, so that load of the revolution mechanism 3000 is reduced.
Further, the inclination angles between the two waist-shaped holes 4810 and the central axis of the outer cylinder 4500 are equal; when the two rollers 4420 are respectively positioned at the adjacent ends of the two kidney-shaped holes 4810, i.e., at position I, the two axial carriages 4300 are spaced a minimum distance H min At this time, the rotation mechanism 2000 is located at a non-eccentric position, i.e., a "zero position" with respect to the revolution mechanism 3000; when the two rollers 4420 are respectively located at the other ends of the two kidney-shaped holes 4810, i.e., at position II, the two axial carriages 4300 are spaced apart by the greatest distance, H max At this time, the rotation mechanism 2000 is positioned at the maximum eccentric position with respect to the revolution mechanism 3000.
The inclination angles of the two kidney-shaped holes 4810 are equal and opposite, so that the two kidney-shaped holes 4810 are in a symmetrical state on the radial sliding plate 4800, when the two rotary lining cylinders 4400 relatively move, the radial moving distances of the two rollers 4420 are equal, and at the moment, the radial sliding plate 4800 can drive the outer cylinder 4500 to radially translate without inclining, the hole making cutter 2300 is prevented from inclining, the adjustment precision of the eccentric distance is ensured, and the machining precision of the holes is further ensured.
Further, the independent feeding mechanism 5000 includes a feeding driving assembly, an oldham coupling 5400 and a transition shaft 5500; the feed drive assembly includes a feed drive motor 5100, a worm 5200, and a worm gear 5300;
a first screw 2400 is abutted on the rear end of the rotation mechanism 2000; an inner thread matched with the first screw rod 2400 is arranged on the inner wall of the inner cylinder 4600; a spline shaft 2500 is coaxially connected to the rear end of the first screw rod 2400;
a tub housing 5700 is installed on the front side of the adaptor 1400; a worm shaft 5600 is rotatably mounted on the adaptor 1400 through a rolling bearing; the end of the worm wheel shaft 5600 is rotatably inserted through the barrel housing 5700 and then is abutted against the input end of the oldham coupling 5400; the output end of the Oldham coupling 5400 is butted with the rear end of the transition rotating shaft 5500; the front end of the transition rotating shaft 5500 is arranged in the outer cylinder 4500 through a double-row rolling bearing; a spline hole is arranged at the front end of the transition rotating shaft 5500; spline shaft 2500 is inserted on the spline hole in a sliding mode;
the worm 5200 is rotatably installed on the front side of the adapter 1400; the feed drive motor 5100 is for driving the worm 5200 to rotate; a docking window is provided on the circumferential side of the barrel housing 5700; the worm gear 5300 is mounted on the worm gear shaft 5600 and is located within the barrel housing 5700; the worm 5200 is engaged with the worm gear 5300 through the docking window.
The worm 5200 is driven to rotate by the driving motor 5100, so that the worm wheel 5300 drives the worm wheel shaft 5600 to rotate, the worm wheel shaft 5600 drives the transition rotating shaft 5500 to rotate through the Oldham coupling 5400, the transition rotating shaft 5500 transmits rotation to the first screw rod 2400 through a spline pair between the transition rotating shaft 5500 and the spline shaft 2500, the spline shaft 2500 can axially slide along a spline hole, and the rotation mechanism 2000 realizes independent feeding or retracting due to the thread pair between the first screw rod 2400 and the inner cylinder 4600.
Further, the invention also provides a hole milling method of the spiral hole milling unit with the rotation mechanism feeding independently, comprising the following steps:
step 1, zeroing before spiral hole milling, and adjusting the eccentric adjusting mechanism 4000 to be zero so that the rotation mechanism 2000 is positioned at a non-eccentric position relative to the revolution cylinder 3500, and at the moment, the eccentric amount e of the hole making cutter 2300 is equal to the eccentric amount e of the hole making cutter 2300 0 Zero;
step 2, the eccentric adjustment mechanism 4000 performs eccentric adjustment of the rotation mechanism 3000, and the specific implementation steps are as follows:
A. according to the diameter D of the hole to be made H Cutter diameter d of hole cutter 2300 t Calculating the eccentricity e of the hole cutter 2300, i.e., e= (D) H -d t ) 2; calculating a control angle theta corresponding to the offset driving motor 4100 by combining the structural parameters and the position relation of the eccentric adjusting mechanism 4000;
B. starting an offset driving motor 4100 according to the control angle θ, and adjusting the hole making cutter 2300 to a required position through a second screw rod 4200, two axial sliding seats 4300, two rotary sleeves 4400, a radial sliding plate 4800, an outer cylinder 4500 and an inner cylinder 4600, thereby completing eccentric adjustment of the hole making cutter 2300 before spiral hole milling;
step 3, the revolution mechanism 3000, the independent feeding mechanism 5000 and the rotation mechanism 2000 cooperate to complete the machining operation of the spiral milling hole, and the specific implementation steps are as follows:
C. firstly, under the drive of a robot, a spiral hole milling unit is adjusted to a required pose during hole processing;
D. starting a rotation driving motor 2100 of the rotation mechanism 2000 to drive the hole making cutter 2300 to rotate;
E. a revolution driving motor 3100 for starting the revolution mechanism 3000, under the constraint of the eccentric adjusting mechanism 4000, drives the hole making cutter 2300 to revolve through the driving gear 3300, the driven ring gear 3400 and the revolution cylinder 3500 in sequence;
F. starting a feed driving motor 5100 of the independent feed mechanism 5000, and under the joint constraint of a threaded pair of the inner cylinder 4600 and the first screw rod 2400 and a spline pair of the transition rotating shaft 5500 and the spline shaft 2500, driving the autorotation mechanism 2000 to independently feed through a worm 5200, a worm wheel 5300, an Oldham coupling 5400 and the transition rotating shaft 5500 in sequence until the hole is machined;
G. firstly stopping the rotation driving motor 2100, the revolution driving motor 3100 and the feed driving motor 5100; then, under the drive of a robot, the hole making cutter 2300 is adjusted to be coaxial with the processed hole; finally, the hole making cutter 2300 is retracted through the independent feeding mechanism 5000 and returns to the initial feeding state;
step 4, when the holes with the same aperture are continuously machined, repeatedly executing the step 3 until the robot finishes machining all the holes of the wheel; and (3) when the holes with different hole diameters continue to be processed, repeatedly executing the step (1), the step (2) and the step (3) until all the holes are processed.
In the spiral hole milling unit with the independent feeding of the rotation mechanism, the rotation driving motor 2100, the revolution driving motor 3100, the offset driving motor 4100 and the feeding driving motor 5100 all adopt existing stepping motors.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a spiral milling hole unit that rotation mechanism independently fed which characterized in that: comprises a combined bracket (1000), a rotation mechanism (2000), a revolution mechanism (3000), an eccentric adjusting mechanism (4000) and an independent feeding mechanism (5000);
the revolution mechanism (3000), the eccentric adjusting mechanism (4000) and the independent feeding mechanism (5000) are all arranged on the combined bracket (1000); the front end of the autorotation mechanism (2000) is used for installing a hole making cutter (2300); the rotation mechanism (2000) is arranged on the revolution mechanism (3000) and is used for driving the hole making cutter (2300) to rotate, and the revolution mechanism (3000) drives the rotation mechanism (2000) to revolve; the eccentric adjusting mechanism (4000) drives the autorotation mechanism (2000) to perform eccentric adjustment; the independent feeding mechanism (5000) drives the autorotation mechanism (2000) to feed.
2. The self-rotating mechanism independently fed helical milling unit of claim 1, wherein: the combined bracket (1000) comprises a bottom plate (1100), a front support (1200), a rear support (1300) and an adapter (1400); the front support (1200), the rear support (1300) and the adapter (1400) are respectively fixed on the front end, the middle part and the rear end of the bottom plate (1100); the front support (1200) and the rear support (1300) are used for installing a revolution mechanism (3000); the adapter (1400) is used for installing an independent feeding mechanism (5000).
3. The self-rotating mechanism independently fed helical milling unit of claim 1, wherein: the rotation mechanism (2000) comprises a rotation driving motor (2100) and a cutter bar (2200); the rotation driving motor (2100) is arranged on the eccentric adjusting mechanism (4000); the rear end of the cutter bar (2200) is butted on the output shaft of the rotation driving motor (2100); the front end of the cutter bar (2200) is used for detachably mounting the hole making cutter (2300).
4. The self-rotating mechanism independently fed helical milling unit of claim 1, wherein: the revolution mechanism (3000) comprises a revolution driving motor (3100) and a revolution cylinder (3500); the revolution cylinder body (3500) is rotatably arranged on the combined bracket (1000); the revolution driving motor (3100) is arranged on the combined bracket (1000) and drives the revolution cylinder (3500) to rotate through the internal gear pair.
5. The self-rotating mechanism independently fed helical milling unit of claim 4, wherein: the eccentric adjusting mechanism (4000) comprises an offset adjusting driving assembly, an outer cylinder body (4500), an inner cylinder body (4600), two axial sliding seats (4300) and two rotary lining cylinders (4400); the outer cylinder body (4500) is radially and adjustably arranged on the revolution cylinder body (3500), and the inner cylinder body (4600) is fixed in the outer cylinder body (4500); the autorotation mechanism (2000) is rotatably arranged on the inner cylinder body (4600); a radial sliding plate (4800) is axially arranged on the outer side surface of the outer cylinder body (4500); two kidney-shaped holes (4810) are arranged on the radial sliding plate (4800), and the two kidney-shaped holes (4810) are distributed in a splayed shape; the two rotary lining cylinders (4400) are both sleeved on the revolution cylinder body (3500) in a sliding way; the two axial sliding seats (4300) are respectively coaxially and rotatably arranged on the outer side walls of the two rotary lining cylinders (4400); the deflection adjusting driving assembly is arranged on the combined bracket (1000) and used for driving the two axial sliding seats (4300) to move relatively; an inward extending connecting rod (4410) penetrating through the revolution cylinder body (3500) is arranged on the inner side wall of each rotary lining cylinder (4400); the ends of the two inward extending connecting rods (4410) are respectively provided with a roller (4420) which walks along the corresponding side waist-shaped holes (4810).
6. The self-rotating mechanism independently fed helical milling unit of claim 5, wherein: two guide rods (4700) which penetrate through the two axial sliding seats (4300) in a sliding manner are fixed on the combined bracket (1000); a guide key (3600) is axially arranged on the outer side surface of the revolution cylinder body (3500); an axial chute (4430) which is in sliding fit with the guide key (3600) is arranged on the inner side walls of the two rotary lining cylinders (4400).
7. The self-rotating mechanism independently fed helical milling unit of claim 5, wherein: a plurality of radial rolling assemblies (4900) which are uniformly distributed along the radial direction are also arranged between the axial sliding seat (4300) and the rotary lining cylinder (4400).
8. The self-rotating mechanism independently fed helical milling unit of claim 5, wherein: the inclination angles between the two waist-shaped holes (4810) and the central axis of the outer cylinder body (4500) are equal.
9. The self-rotating mechanism independently fed helical milling unit of claim 5, wherein: the independent feeding mechanism (5000) comprises a feeding driving assembly, an Oldham coupling (5400) and a transition rotating shaft (5500);
the rotation mechanism (2000) is screwed on the inner cylinder (4600); a worm wheel shaft (5600) is rotatably arranged at the rear side of the combined bracket (1000); the feeding driving component is arranged on the combined bracket (1000) and is used for driving the worm wheel shaft (5600) to rotate; the front end of the worm wheel shaft (5600) is in butt joint with the rear end of the transition rotating shaft (5500) through an Oldham coupling (5400); the front end of the transition rotating shaft (5500) extends into the outer cylinder body (4500); the rear end of the autorotation mechanism (2000) is connected with the transition rotating shaft (5500) through a spline to realize rotation transmission.
10. The hole milling method of the screw hole milling unit with the independent feeding of the rotation mechanism according to claim 1, wherein: the method comprises the following steps:
step 1, zeroing before spiral hole milling, adjusting an eccentric adjusting mechanism (4000) to be zero, enabling a rotation mechanism (2000) to be positioned at a non-eccentric position relative to a revolution mechanism (3000), and enabling a hole making cutter (2300) to be eccentric e at the moment 0 Zero;
step 2, the eccentric adjusting mechanism (4000) firstly carries out eccentric adjustment on the autorotation mechanism (3000), and the specific implementation steps are as follows:
A. according to the diameter D of the hole to be made H Cutter diameter d of hole making cutter (2300) t Calculating the eccentric amount e of the hole making cutter (2300), namely e= (D) H -d t ) 2; calculating a corresponding control angle theta by combining the structural parameters and the position relation of the eccentric adjusting mechanism (4000);
B. starting an eccentric adjusting mechanism (4000) to adjust the hole making cutter (2300) to a required position according to the control angle theta, and finishing eccentric adjustment of the hole making cutter (2300) before spiral hole milling;
step 3, the revolution mechanism (3000), the independent feeding mechanism (5000) and the rotation mechanism (2000) cooperatively complete the machining operation of spiral milling holes, and the specific implementation steps are as follows:
C. firstly, adjusting a spiral hole milling unit to a required pose during hole processing;
D. starting an autorotation mechanism (2000) to drive a hole making cutter (2300) to autorotate;
E. starting a revolution mechanism (3000), and driving a hole making cutter (2300) to revolve under the constraint of an eccentric adjusting mechanism (4000);
F. starting an independent feeding mechanism (5000), and driving the autorotation mechanism (2000) to independently feed under the common constraint of the eccentric adjusting mechanism (4000) and the independent feeding mechanism (5000) until the hole is machined;
G. firstly, stopping the rotation mechanism (2000), the revolution mechanism (3000) and the independent feeding mechanism (5000); then, under the drive of a robot, the hole making cutter (2300) is adjusted to be coaxial with the processed hole; finally, the hole making cutter (2300) is turned back to a zero position through an independent feeding mechanism (5000);
step 4, when the holes with the same aperture are continuously machined, repeatedly executing the step 3 until the robot finishes machining all the holes of the wheel; and (3) when the holes with different hole diameters continue to be processed, repeatedly executing the step (1), the step (2) and the step (3) until all the holes are processed.
CN202310131072.9A 2023-02-17 2023-02-17 Spiral hole milling unit with independent feeding of rotation mechanism and hole milling method thereof Pending CN116275216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310131072.9A CN116275216A (en) 2023-02-17 2023-02-17 Spiral hole milling unit with independent feeding of rotation mechanism and hole milling method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310131072.9A CN116275216A (en) 2023-02-17 2023-02-17 Spiral hole milling unit with independent feeding of rotation mechanism and hole milling method thereof

Publications (1)

Publication Number Publication Date
CN116275216A true CN116275216A (en) 2023-06-23

Family

ID=86816023

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310131072.9A Pending CN116275216A (en) 2023-02-17 2023-02-17 Spiral hole milling unit with independent feeding of rotation mechanism and hole milling method thereof

Country Status (1)

Country Link
CN (1) CN116275216A (en)

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