CN107442866B

CN107442866B - Automatic-aligning chamfering processing mode and equipment

Info

Publication number: CN107442866B
Application number: CN201710906244.XA
Authority: CN
Inventors: 李全城; 许昌超; 汪海林; 易吉祥; 陈锐; 刘飞
Original assignee: Xiamen University of Technology
Current assignee: Xiamen University of Technology
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2023-03-28
Anticipated expiration: 2037-09-29
Also published as: CN107442866A

Abstract

The invention discloses an automatic-aligning chamfer machining device and a corresponding machining mode, and the automatic-aligning chamfer machining device comprises a body, a power source, a cutter and a transmission gear set, wherein the cutter is fixedly arranged at one end of a cutter rotating shaft, the cutter rotating shaft is arranged on the transmission gear set in a spinning mode, the transmission gear set is assembled in the body, the power source drives the cutter rotating shaft and the cutter to rotate at a high speed through the transmission gear set, the cutter rotating shaft and the cutter can revolve around the circle center of an inner hole to be machined, the revolution radius is variable, the distance between the equipment cutter and the circle center of the inner hole to be machined can be automatically adjusted, the automatic-aligning chamfer machining device can be better suitable for machining requirements of chamfers with different inner diameters, the cutter changing process is avoided, and the production efficiency is improved.

Description

Automatic-aligning chamfering processing mode and equipment

Technical Field

The invention relates to a production cutter device in the field of machining, in particular to an automatic-aligning chamfering machining method and equipment.

Background

The chamfer is an inclined surface formed by grinding the end part or the edge of an inner hole of the part to remove burrs generated by machining on the part and also facilitate the assembly of the part. In order to improve the chamfering cutting processing efficiency and simultaneously to make the chamfering processing quality and effect better, and the automatic chamfering machine comes to the end, patent ZL201320462280.9 proposes an automatic chamfering device, which enables a driving main shaft to automatically approach a part when in operation by additionally arranging a feeding device on the driving main shaft, and simultaneously realizes the rapid processing of the chamfer through a connecting shaft and a gear set driving cutter below the driving main shaft; another patent application ZL201610785228.5 proposes the use of pneumatic means to internally chamfer a shaft hole of a fixed type. Obviously, the two automatic chamfering machines can improve the chamfering processing efficiency and quality, but the two automatic chamfering machines cannot meet the processing requirements of shaft holes of different models or round chamfers at the end parts of workpieces at the same time.

Taking processing hole chamfer as an example, the automatic beveler of the overwhelming majority on the market all is a hole to a knife at present, the cutter of a model that the hole of a model corresponds promptly, to the chamfer processing of some variable holes, then need carry out the change of cutter, often need calibrate it again after the cutter is changed, obviously processes such as tool changing, dress sword all need occupy certain production time, and then influence factory production efficiency. The traditional automatic chamfering machine needs to frequently replace cutters when processing variable inner hole chamfers, wastes time and labor, has low efficiency and needs to be further improved.

Disclosure of Invention

The invention aims to overcome the defects and provides a chamfering processing mode and equipment which can adapt to the processing requirement of the inner hole aperture changing within a certain range and avoid automatic centering in the tool changing process.

In order to solve the technical problems, the technical solution of the invention is as follows:

the utility model provides an automatic chamfer processing equipment of aligning, includes body, power supply, cutter and drive gear group, wherein, cutter fixed mounting is in the one end of a sword pivot, but the installation of sword pivot spin on the drive gear group, and the drive gear group is joined in marriage in this body, and sword pivot and cutter can revolve round waiting to process hole or work piece terminal surface centre of a circle and the radius of revolution is variable, and the power supply drives sword pivot and cutter through drive gear group and carries out high-speed rotation.

Preferably, the automatic chamfering machine also comprises a revolution radius self-adjusting mechanism, the power source is connected with and drives the revolution radius self-adjusting mechanism to automatically adjust the revolution radius of the cutter rotating shaft and the cutter, and the automatic chamfering machine can be self-adapted to processing inner holes or workpiece section round chamfers with different sizes.

Preferably, the body comprises a box cover with a downward opening, a box disc is arranged in the box cover, and a positioning ring is connected with the lower cover of the box cover to control the depth of the processed chamfer.

Preferably, the power source is connected with one end of the power shaft, the other end of the power shaft is fixedly connected with the power gear, the power gear is in butt joint with a first duplicate gear, the first duplicate gear is composed of a first large wheel and a first small wheel which are coaxially overlapped, and the first large wheel is meshed with the power gear; a second duplicate gear is also arranged in the box disc and consists of a second big wheel and a second small wheel which are coaxially overlapped, and the first big wheel and the second small wheel are mutually meshed; the second large wheel is meshed with the first gear and drives the first gear shaft to rotate, the first gear is fixed at one end of the first gear shaft, and the middle section of the first gear shaft is fixedly provided with the second gear through a first key; the cutter rotating shaft is further provided with a third gear, the third gear and the cutter are respectively fixedly arranged at two ends of the cutter rotating shaft, the second gear and the third gear are meshed with each other, the cutter rotating shaft and the cutter are driven to rotate through the third gear, and the power gear, the first bull wheel, the second duplicate gear, the first gear, the second gear and the third gear form a transmission gear set together.

Preferably, the automatic adjusting device further comprises a revolution radius self-adjusting mechanism, the revolution radius self-adjusting mechanism comprises a central gear and planetary gears distributed on the periphery of the central gear, the central gear is meshed with all the planetary gears, the planetary gears can achieve automatic centering of a cutter, cutter shaft holes penetrating through upper and lower planes of the gears are distributed in the non-gear center of each planetary gear, a cutter rotating shaft can penetrate through the cutter shaft holes in a self-rotating mode, a centering bearing is arranged below the cutter, and the other end of a first gear shaft penetrating through the box disc penetrates through the center of the planetary gear.

Preferably, three identical planetary gears are distributed on the periphery of the central gear, one end of the central rotating shaft penetrates through the central gear and drives the central gear to rotate, the other end of the central rotating shaft is fixedly connected with a fourth gear, a steering gear is arranged between the fourth gear and the first small wheel, the first duplicate gear is fixed on the second gear shaft, the steering gear is fixed on the steering gear shaft, and the power shaft, the second gear shaft and the steering gear shaft are movably connected to the inner surface of the box cover through bearings.

Preferably, handles are symmetrically distributed on the outer side of the side wall of the box cover and used for holding and stabilizing the equipment.

Preferably, a ratchet structure is arranged between the planetary gear and the box disc to lock the revolution radius of the cutter.

An automatic aligning chamfering processing mode comprises the following steps:

the method comprises the following steps: a central gear and a plurality of planetary gears distributed on the periphery of the central gear are arranged on chamfering processing equipment, the central gear is meshed with all the planetary gears, a cutter rotating shaft is rotatably inserted in the non-gear center of each planetary gear, the distances from all the cutter rotating shafts to the center of the central gear are kept equal at any moment, and cutters are fixed on one or more cutter rotating shafts and spin along with the cutter rotating shafts;

step two: all the cutter rotating shafts are arranged in the inner hole to be processed, and the center of the central gear and the center of the inner hole to be processed are automatically centered by synchronously changing the distance;

step three: and the cutter revolves around the circle center of the inner hole to be processed along with the cutter rotating shaft while rotating automatically, so that the inner hole chamfer is processed.

Preferably, the rotation of the rotating shaft of the cutter in the step one, the automatic centering of the center of the central gear and the circle center of the inner hole to be processed in the step two and the revolution of the rotating shaft of the cutter around the circle center of the inner hole to be processed in the step three are all realized by the synchronous control of the same power source.

After the scheme is adopted, the invention has the following advantages:

1. the pneumatic power source adopted by the equipment is not only used for driving the cutter, but also used for automatically aligning, so that the multiple utilization of energy sources is realized, the centering work in the chamfering processing is simplified, and the chamfering processing quality is improved;

2. the distance between the equipment cutter and the center of the inner hole to be machined can be automatically adjusted, the equipment cutter is better suitable for the machining requirements of chamfers with different inner diameters, the problem that the existing inner hole chamfering equipment is too single in function is solved, the cutter replacing process is also avoided, the working efficiency of chamfer machining is improved, and the risk generated in the cutter replacing process of workers is reduced;

3. the combination of the gear and the ratchet wheel is adopted to realize the driving of the processing cutter and the limitation of the position of the cutter, the cutter can be automatically adjusted to adapt to the processing requirements of chamfers with different inner diameters, the structure is simple, the device is light and convenient, the operation is rapid, all parts are standard parts, and the maintenance and the replacement are easy;

4. by adding the ratchet structure between the planetary gear and the box disc, the planetary gear can be prevented from moving reversely relative to the central gear after the centering is finished, and the locking of the revolution radius of the cutter is realized.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a cross-sectional view of the invention after assembly;

FIG. 3 is a perspective view of the internal structure of the present invention;

FIG. 4 is a cross-sectional view of the internal structure of the present invention;

FIG. 5 is a perspective view of the central spindle of the present invention;

FIG. 6 is a bottom view of the internal structure of the present invention;

FIG. 7 is a top view of the internal structure of the present invention;

FIG. 8 is a ratchet wheel arrangement view of the second embodiment;

FIG. 9 is a ratchet wheel arrangement view of the three internal structures of the embodiment;

FIG. 10 is another ratchet-pawl arrangement of the second embodiment.

Description of the reference symbols

Case cover 11, positioning ring 12, case plate 13, fixing plate 14 and fixing shaft 15

Third gear 23 self-aligning bearing 24 of cutter 2 cutter rotating shaft 21

Power shaft 3 power source 30 source through hole 31 power gear 32

First small gear 41, first large gear 42 and second gear shaft 43

Second small wheel 51 and second large wheel 52

The fourth gear 61 of the central rotating shaft 6, the steering gear 62, the steering gear shaft 63 and the second key 64

First gear 71, first gear shaft 72, first key 73, second gear 74

Sun gear 81 planet gear 82 tool shaft hole 83

The pawl 91 ratchets 92.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The first embodiment is as follows:

the invention discloses a chamfer processing device capable of automatically aligning, as shown in figures 1-2, and as a preferred embodiment of the invention, the device comprises a body, a power source 30, a cutter 2 and a transmission gear set, wherein the power source 30 can select a common pneumatic power source, the cutter 2 is fixedly arranged at one end of a cutter rotating shaft 21, the cutter rotating shaft 21 can be arranged on the transmission gear set in a spinning way, the transmission gear set is assembled in the body, when the device is operated, the cutter rotating shaft 21 and the cutter 2 can revolve around the center of a circle of an inner hole to be processed or the end surface of a workpiece, the revolving radius can be changed, and the power source 30 drives the cutter rotating shaft 21 and the cutter 2 to rotate at a high speed through the transmission gear set. The high-speed rotation of the cutter 2 can realize the cutting of the part port, and the revolution of the cutter around the center of the inner hole to be processed can move around the port at a constant speed for a circle, so that the processing of the whole inner hole or the circular chamfer of the end surface of the workpiece is completed.

Specifically, the body of the equipment comprises a box cover 11 with a downward opening, the box cover 11 is of a barrel-shaped structure, a box tray 13 with an upward opening is arranged in the box cover 11, the box cover 11 and the box tray 13 can rotate around the same axis relatively, and the box cover 11 and the box tray 13 can be used for mounting a transmission gear set. The lower part of the box cover 11 is covered with a positioning ring 12, and the positioning ring 12 can be an annular structure covered on the opening of the box cover 11 through screw threads. Because the cutter 2 is fixed in on case cover 11 and case dish 13 through sword pivot 21 and drive gear group, consequently its relative case cover 11 upper surface highly unchangeable, when adjusting the relative case cover 11 upper surface height of holding ring 12 through the screw rotation, cutter 2 will the different degree lean out from holding ring 12 lower surface, during processing hole chamfer, because holding ring 12 can the joint at work piece hole peripheral edge, consequently cutter 2 will the different degree stretch into the hole of treating processing, realize the rapid machining of the different degree hole chamfers.

The power source 30 is connected with one end of the power shaft 3, the power shaft 3 is rotatably mounted on the box cover 11 through a bearing, the box cover 11 is provided with an active through hole 31, the power source 30 is connected with one end of the power shaft 3 through the active through hole 31, the other end of the power shaft 3 is fixedly connected with a power gear 32, the power gear 32 is in butt joint with a first duplicate gear, the first duplicate gear is composed of a first large wheel 42 and a first small wheel 41 which are coaxially overlapped, the first large wheel 42 is meshed with the power gear 32, the first duplicate gear is fixed at one end of a second gear shaft 43, and the other end of the second gear shaft 43 is rotatably mounted on the box cover 11 through the bearing; a second duplicate gear is further arranged in the box tray 13, the second duplicate gear is composed of a second large wheel 52 and a second small wheel 51 which are coaxially overlapped, the first large wheel 42 and the second small wheel 51 are mutually meshed, the second duplicate gear is movably sleeved on a central rotating shaft 6, and the central rotating shaft 6 plays a role in positioning the second duplicate gear. One end of the central rotating shaft 6 is rotatably arranged at the central position of the box cover 11 through a bearing, the central rotating shaft 6 also penetrates through the central position of the box disc 13, and the first duplicate gear and the second duplicate gear are arranged between the box cover 11 and the box disc 13; a first gear 71 is further arranged between the box cover 11 and the box tray 13, the second bull wheel 52 is meshed with the first gear 71 and drives the first gear shaft 72 to rotate, the first gear 71 is fixed at one end of the first gear shaft 72, the first gear shaft 72 penetrates through the box tray 13 and is rotatably installed on the box tray 13 through a bearing, and a second gear 74 is fixedly arranged at the middle section of the first gear shaft 72 at the other side of the box tray 13 through a first key 73; a third gear 23 is fixedly arranged at one end of the cutter rotating shaft 21, which is different from the end where the cutter 2 is arranged, the second gear 74 and the third gear 23 are meshed with each other, and the cutter rotating shaft 21 and the cutter 2 are driven to rotate through the third gear 23. The power gear 32, the first large gear 42, the second duplicate gear, the first gear 71, the second gear 74 and the third gear 23 jointly form a transmission gear set to drive the cutters to rotate.

The revolution radius of the device is changed mainly by the revolution radius self-adjusting mechanism, and the power source 30 can be connected with and drive the revolution radius self-adjusting mechanism at the same time to automatically adjust the revolution radius of the cutter rotating shaft 21 and the cutter 2. Specifically, the revolving radius self-adjusting mechanism comprises a central gear 81 and planet gears 82 distributed on the periphery of the central gear 81, the central gear 81 is meshed with all the planet gears 82, the central gear 81 and the planet gears 82 are arranged between the box disc 13 and the positioning ring 12, and in the embodiment, three identical planet gears 82 can be distributed on the periphery of the central gear 81. One end of the central rotating shaft 6 passes through the central gear 81 and drives the central gear 81 to rotate, the other end of the central rotating shaft 6 is fixedly connected with a fourth gear 61, and the central rotating shaft 6 and the fourth gear 61 can be prevented from rotating relatively by arranging a second key 64. A steering gear 62 is arranged between the fourth gear 61 and the first small wheel 41, the first duplicate gear is fixed on the second gear shaft 43, the steering gear 62 is fixed on a steering gear shaft 63, and the power shaft 3, the second gear shaft 43 and the steering gear shaft 63 are movably connected on the inner surface of the box cover 11 through bearings.

A fixing plate 14 is further arranged between the positioning ring 12 and the box disc 13, the fixing shaft 15 fixes the box disc 13 and the fixing plate 14, cutter shaft holes 83 penetrating through upper and lower planes of the gears are distributed at the non-gear center of the planetary gear 82, the cutter rotating shafts 21 can penetrate through the cutter shaft holes 83 in a self-rotating manner, the cutter rotating shafts 21 are rotatably mounted on the planetary gear 82 through bearings, a self-aligning bearing 24 is further arranged below the cutter 2, the distances between the cutter rotating shafts 21 of the three planetary gears 82 and the central gear 81 are kept the same and are changed synchronously, in this embodiment, the cutter 2 is arranged at one end of only one cutter rotating shaft 21, and in fact, the cutter 2 can be arranged at one end of a plurality of cutter rotating shafts 21. The other end of the first gear shaft 72 penetrating the case plate 13 penetrates the center of the planetary gear 82, and the planetary gear 82 is rotatably mounted on the first gear shaft 72 through a bearing.

When the device works, if the pneumatic power source drives the power gear 32 to rotate counterclockwise, the first duplicate gear can be driven to rotate clockwise, the first large wheel 42 further drives the second duplicate gear to rotate counterclockwise, and the first small wheel 41 drives the fourth gear 61 to rotate clockwise after passing through the steering gear 62. In the aspect of the transmission gear set, the second duplicate gear drives the first gear 71 to rotate clockwise, and under the action of the first key 73 and the second gear 74, the third gear 23 keeps rotating counterclockwise, and further drives the cutter 2 to rotate counterclockwise at a high speed. In the revolution radius self-adjusting mechanism, the central rotating shaft 6 rotates clockwise under the action of the fourth gear 61 and the second key 64, so as to drive the central gear 81 to rotate clockwise, the 3 planetary gears 82 rotate anticlockwise under the action of the central gear 81, the distance from the corresponding self-aligning bearing 24 to the circle center of the inner hole to be processed is changed accordingly, or the self-aligning bearing approaches the circle center or deviates from the circle center at the same time, and the two processes alternately appear. When an inner hole is machined, firstly, the height of equipment is reduced, all the aligning bearings 24 at the lower ends of the three cutter rotating shafts 21 enter the inner hole to be machined, along with the fact that the distance between the aligning bearings 24 and the circle center is larger and larger, when the aligning bearings 24 reach the edge of the inner hole, the pressure action of the edge of the inner hole can enable the circle center of the inner hole of a workpiece and the circle center of the revolution of the cutter 2 to be automatically centered, after the aligning is completed, the height of the equipment is further reduced, due to the fact that the edge of the inner hole limits the three planetary gears 82, the planetary gears 82 do not rotate relative to the central gear 81, and at the moment, the circle center of the revolution of the cutter 2 is located on the axis of the central rotating shaft 6. The sun gear 81 drives the entire case disk 13 and the fixed plate 14 to rotate clockwise about the central rotary shaft 6 via the first gear shaft 72 penetrating the centers of the three planetary gears 82, and the corresponding tool 2 revolves about the axis of the central rotary shaft 6. The descending cutter 2 is in the process of continuous rotation, and cuts the edge of the inner hole, so that the rapid processing of the inner hole round chamfer is realized. When a round chamfer of the section of a workpiece is machined, the height of equipment can be reduced firstly, the self-aligning bearings 24 at the lower ends of the three cutter rotating shafts 21 are distributed around the section of the workpiece, the distance between the self-aligning bearings 24 and the circle center is smaller and smaller, when the self-aligning bearings 24 clamp the end face of the workpiece, the pressure action of the end face of the workpiece can enable the circle center of the end face of the workpiece and the circle center of the revolution of the cutter 2 to be automatically aligned, the height of the equipment is further reduced after the alignment is finished, and the round chamfer of the section of the workpiece is machined quickly.

The processing mode can be summarized into the following steps:

the method comprises the following steps: a central gear and a plurality of planetary gears distributed on the periphery of the central gear are arranged on chamfering processing equipment, the central gear is meshed with all the planetary gears, a cutter rotating shaft can be rotatably inserted in the non-gear center of each planetary gear, the distance between each cutter rotating shaft and the center of the central gear is kept equal at any moment, and a cutter is fixed on one or more cutter rotating shafts and rotates along with the cutter rotating shafts;

In order to realize multiple application of power sources, the rotation of the cutter rotating shaft in the first step, the automatic centering of the center of the central gear and the circle center of the inner hole to be machined in the second step and the revolution of the cutter rotating shaft around the circle center of the inner hole to be machined in the third step are realized by the synchronous control of the same power source.

Furthermore, the equipment can also be combined with a circumference recognition sensor to monitor the processing process, and when the monitoring result shows that the processing of the round chamfer of the workpiece port or the inner hole is finished, the equipment automatically exits; the equipment can also be matched with an automatic material changing mechanism on the market to form a full-automatic chamfering processing assembly line, so that the efficiency is improved, the safety of personnel can be guaranteed, and contribution is made to industrial 4.0 construction.

The second embodiment:

further, in order to prevent the pressure of the edge of the workpiece or the inner hole on the cutter from changing the revolution radius of the cutter in the descending process of the cutter, a ratchet mechanism can be arranged between the box disc and the fixed plate, and the planetary gear 82 is prevented from rotating clockwise relative to the central gear 81 through the ratchet mechanism, so that the revolution radius of the cutter is locked.

Specifically, the other structure of the apparatus is the same as the first embodiment, except that any one of the planetary gears 82 is selected to be provided with a ratchet mechanism, as shown in fig. 8, in order to ensure the space distribution in the case disk is reasonable, the planetary gear 82 that the first gear 71 does not pass through is selected in the present embodiment, a pawl 91 is fixed at the upper end of any one of the fixed posts 15 of the planetary gear, a ratchet gear 92 is fixed at the upper end of the first gear shaft 72, and the pawl 91 abuts against the ratchet gear 92 to prevent the planetary gear 82 from moving clockwise relative to the sun gear 81.

In order to ensure the chamfering processing precision, the precision of a ratchet mechanism for locking the planetary gear needs to be improved, which can be realized by reducing the size of the ratchet on one hand and can meet the precision requirement by arranging a plurality of pawls on the other hand. As shown in fig. 10, three pawls 91 may be simultaneously disposed on three fixed posts 15 of the same planetary gear, so that the pawls are close to the edge of the ratchet gear 92 at different angles, the three pawls 91 do not simultaneously lock the ratchet teeth of the ratchet gear 92, and when any one pawl 91 locks the ratchet teeth, the other two pawls 91 do not lock the ratchet teeth. During the rotation of the ratchet gear 92 through a ratchet angle, the three pawls 91 will act to catch the ratchet teeth one after the other.

Example three:

the difference between this embodiment and the second embodiment is only the location distribution of the pawls, and as shown in fig. 9, in this embodiment, a pawl 91 is fixed and movably mounted on the fixed plate 14, and since the fixed plate 14 is fixed below the box tray and rotates synchronously with the box tray, the pawl 91 can also be fixed and mounted on the bottom surface of the box tray. The pawl 91 can be installed in a gap at one side of the meshing position of the planetary gear 82, the pawl 91 can rotate around the installation shaft and reset through a coil spring or a spring sleeved on the installation shaft, the tip of the pawl 91 is inserted into the gear teeth of the planetary gear 82 at an acute angle, when the planetary gear 82 moves anticlockwise relative to the gear box under the driving of the central gear 81, the pawl 91 can rotate under the action of the gear teeth without influencing the advancing of the planetary gear, and after the centering is in place, the pawl 91 can reset quickly under the action of the coil spring or the spring and abuts against the gear teeth of the planetary gear again to prevent the planetary gear 82 from moving clockwise relative to the central gear 81.

The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention, so that the changes and modifications made by the claims and the specification of the present invention should fall within the scope of the present invention.

Claims

1. The chamfer processing equipment with the automatic aligning function comprises a body, a power source, a cutter and a transmission gear set, and is characterized in that the cutter is fixedly installed at one end of a cutter rotating shaft, the cutter rotating shaft is installed on the transmission gear set in a spinning mode, the transmission gear set is assembled in the body, the cutter rotating shaft and the cutter can revolve around the circle center of an inner hole to be processed or the end face of a workpiece, the revolution radius is variable, and the power source drives the cutter rotating shaft and the cutter to rotate at a high speed through the transmission gear set;

the body comprises a box cover with a downward opening, a box disc is arranged in the box cover, and a positioning ring is covered and connected below the box cover;

the power source is connected with one end of a power shaft, the other end of the power shaft is fixedly connected with a power gear, the power gear is in butt joint with a first duplicate gear, the first duplicate gear is composed of a first large wheel and a first small wheel which are coaxially overlapped, and the first large wheel is meshed with the power gear; a second duplicate gear is also arranged in the box disc and consists of a second big wheel and a second small wheel which are coaxially overlapped, and the first big wheel and the second small wheel are mutually meshed; the second large wheel is meshed with the first gear and drives a first gear shaft to rotate, the first gear is fixed at one end of the first gear shaft, and the middle section of the first gear shaft is fixedly provided with a second gear through a first key; the cutter rotating shaft is also provided with a third gear, the third gear and the cutter are respectively fixedly arranged at two ends of the cutter rotating shaft, the second gear and the third gear are meshed with each other, the cutter rotating shaft and the cutter are driven to rotate through the third gear, and the power gear, the first bull wheel, the second duplicate gear, the first gear, the second gear and the third gear form the transmission gear set together;

still include revolution radius self-modulation mechanism, revolution radius self-modulation mechanism includes sun gear and distributes in sun gear outlying planetary gear, sun gear and all planetary gear meshes, non-gear center punishment has planar cutter shaft hole about the through gear on the planetary gear, but passing of sword pivot spin the cutter shaft hole, the cutter below is equipped with self-aligning bearing, runs through the other end of the first gear shaft of case dish runs through planetary gear's center.

2. The chamfering processing apparatus with automatic center adjustment according to claim 1, wherein: the power source is simultaneously connected with and drives the revolution radius self-adjusting mechanism to automatically adjust the revolution radius of the cutter rotating shaft and the cutter.

3. The chamfering processing apparatus with automatic center adjustment according to claim 1, wherein: three same planet gears are distributed on the periphery of the central gear, one end of a central rotating shaft penetrates through the central gear and drives the central gear to rotate, the other end of the central rotating shaft is fixedly connected with a fourth gear, a steering gear is arranged between the fourth gear and the first small wheel, the first duplicate gear is fixed on a second gear shaft, the steering gear is fixed on a steering gear shaft, and the power shaft, the second gear shaft and the steering gear shaft are movably connected to the inner surface of the box cover through bearings.

4. The automatic aligning chamfering machining apparatus according to claim 1, wherein: handles are symmetrically distributed on the outer side of the side wall of the box cover.

5. The chamfering processing apparatus with automatic center adjustment according to claim 1, wherein: a ratchet structure is arranged between the planetary gear and the box disc.

6. A chamfer processing mode capable of automatically aligning comprises the following steps:

the method comprises the following steps: a central gear and a plurality of planetary gears distributed on the periphery of the central gear are arranged on chamfering processing equipment, the central gear is meshed with all the planetary gears, a cutter rotating shaft can be rotatably inserted in the non-gear center of each planetary gear, the distance between each cutter rotating shaft and the center of the central gear is kept equal at all times, and a cutter is fixed on one or more cutter rotating shafts and rotates along with the cutter rotating shafts;

step two: placing all the cutter rotating shafts in the inner hole to be machined, and automatically centering the center of the central gear and the center of the inner hole to be machined by synchronously changing the distance;

7. The chamfer processing mode of automatic center adjustment according to claim 6, characterized in that: the rotation of the rotating shaft of the cutter in the first step, the automatic centering of the center of the central gear and the circle center of the inner hole to be processed in the second step and the revolution of the rotating shaft of the cutter around the circle center of the inner hole to be processed in the third step are realized by the synchronous control of the same power source.