CN106984866B

CN106984866B - Automatic chamfering machine

Info

Publication number: CN106984866B
Application number: CN201710257903.1A
Authority: CN
Inventors: 周浩华; 陈帮国; 吴林; 李学宁; 彭贤良
Original assignee: Dongguan Gongsheng Hardware Products Co ltd
Current assignee: Dongguan Gongsheng Hardware Products Co ltd; Guangdong Boss Electrical Appliances Co ltd
Priority date: 2017-04-19
Filing date: 2017-04-19
Publication date: 2020-01-24
Anticipated expiration: 2037-04-19
Also published as: CN106984866A

Abstract

An automatic chamfering machine comprises a lower cover body with a platform, an upper cover body connected with the lower cover body, a control device arranged on the upper cover body, and a feeding and discharging device and a chamfering device which are respectively arranged on the platform and are positioned in the upper cover body; the upper cover body is provided with a doorway, and the chamfering device is positioned at one side of the feeding and discharging device away from the doorway; the feeding and discharging device comprises a to-be-processed product placing table, a finished product placing table, a product processing table, a first support frame, a first X-axis driving mechanism, an X-axis moving plate, a first material sucking mechanism, a second material sucking mechanism, a Y-axis driving mechanism and a conveying plate, wherein the to-be-processed product placing table and the finished product placing table are located between the to-be-processed product placing table and the finished product placing table, the first support frame is respectively connected with the to-be-processed product placing table and the finished product placing table, the first X-axis driving mechanism is installed on the first support frame, the X-axis moving plate is connected with the first X-axis driving. The chamfering device can automatically place and take the aluminum plate at the chamfering device, and the life safety of workers is ensured.

Description

Automatic chamfering machine

Technical Field

The invention relates to the field of automatic processing equipment, in particular to an automatic chamfering machine for chamfering a mounting hole drill on an aluminum plate.

Background

With the continuous development of communication technology and the continuous increase of market demand, the demand of communication products is continuously increasing, and meanwhile, the requirements on cost, weight, technical indexes and space are more severe, and the requirements on the market are consistent.

The cavity filter is a frequency selection device widely applied to the field of communication, in particular to the field of radio frequency communication. In the base station, the cavity filter is used for selecting communication signals and filtering out clutter or interference signals outside the frequency of the communication signals. The cavity filter comprises a filter cavity and an aluminum plate connected with the filter cavity through a screw, and before the aluminum plate is connected with the filter cavity, a mounting hole needs to be punched through a punching machine; then the installation hole on to aluminum plate is bored the chamfer through the beveler again, and the beveler that is used for boring the chamfer to aluminum plate's installation hole at present all will treating the aluminum plate of processing to the chamfer device department of beveler through artificial mode, then will accomplish the aluminum plate of processing and remove from the chamfer device through artificial mode again, and this mode makes the staff injured by the chamfer device in the work very easily, is unfavorable for staff's safety.

Disclosure of Invention

Therefore, the automatic chamfering machine capable of automatically placing and taking the aluminum plate at the chamfering device is needed to solve the problem that the existing chamfering machine manually places and takes the aluminum plate at the chamfering device, and workers are easily injured by the chamfering device in work.

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

an automatic chamfering machine is used for drilling and chamfering an installation hole on an aluminum plate and comprises a lower cover body with a platform, an upper cover body connected with the lower cover body, a control device arranged on the upper cover body, and a feeding and discharging device and a chamfering device which are respectively arranged on the platform and are both positioned in the upper cover body; the upper cover body is provided with a doorway, and the chamfering device is positioned on one side of the feeding and discharging device, which is far away from the doorway; a chip removal hopper is arranged on the platform, the discharge end of the chip removal hopper extends into the lower cover body, and a slag collecting box is arranged in the lower cover body corresponding to the discharge end of the chip removal hopper; the feeding and discharging device comprises a to-be-processed product placing table, a finished product placing table, a product processing table positioned between the to-be-processed product placing table and the finished product placing table, a first support frame with two ends respectively connected with the to-be-processed product placing table and the finished product placing table, a first X-axis driving mechanism installed on the first support frame, an X-axis moving plate connected with the first X-axis driving mechanism, a first material sucking mechanism and a second material sucking mechanism respectively connected with the X-axis moving plate, a Y-axis driving mechanism arranged on the product processing table and a conveying plate connected with the Y-axis driving mechanism; a first weighing sensor connected with the control device is arranged on the to-be-processed product placing table; the first material sucking mechanism is positioned on one side of the second material sucking mechanism, which is close to the to-be-processed product placing table.

According to the automatic chamfering machine, the feeding and discharging device is arranged, so that the aluminum plate to be machined is automatically conveyed to the chamfering device, and the machined aluminum plate is automatically moved away from the position of the chamfering device, manual work is not needed, and the safety of workers is guaranteed; in addition, the first material suction mechanism and the second material suction mechanism which are connected with the first X-axis driving mechanism realize simultaneous feeding and discharging without time interval, and the production efficiency of the aluminum plate is improved.

In one embodiment, the first material suction mechanism and the second material suction mechanism have the same structure; the first material sucking mechanism comprises a Z-axis driving assembly connected with the X-axis moving plate, a sucker mounting frame connected with the Z-axis driving assembly, and a sucker assembly mounted on the sucker mounting frame; the sucking disc subassembly includes first sucking disc and a plurality of second sucking disc, first sucking disc is located the middle part of sucking disc mounting bracket, the second sucking disc wind first sucking disc annular evenly distributed.

In one embodiment, the chamfering device includes a second support frame, a second X-axis driving mechanism installed on the second support frame, a first fixing frame connected to the second X-axis driving mechanism, a Z-axis driving mechanism connected to the first fixing frame, a second fixing frame connected to the Z-axis driving mechanism, and a drill chamfering mechanism installed on the second fixing frame.

In one embodiment, the chamfering mechanism comprises a hollow cylinder, a pressing block arranged at the bottom of the cylinder, a lifting cylinder and a motor which are respectively positioned in the cylinder, and a chamfering cutter connected with an output shaft of the motor; a cutter outlet penetrating through the pressing block is formed in the bottom of the cylinder body, and the cutter outlet and the chamfering cutter are arranged coaxially; the chamfering tool comprises a connecting end connected with an output shaft of the motor and a drill chamfering end far away from the motor; when the chamfer is not drilled, the drilling chamfer end is positioned in the cylinder body.

In one embodiment, the lower end of the knife outlet is in an inverted cone shape.

In one embodiment, the bottom surface of the pressing block is provided with at least one chip removal groove communicated with the cutter outlet, and the chip removal groove extends from the cutter outlet to the edge of the pressing block.

In one embodiment, the number of the chip grooves is at least two, and the chip grooves are annularly and uniformly distributed around the central axis of the knife edge.

In one embodiment, the flute has a cross-sectional dimension that decreases from the discharge edge in a direction away from the discharge edge.

In one embodiment, a product inductor is arranged on the finished product placing table, a first alarm is arranged at the top of the upper cover body corresponding to the product inductor, and the product inductor and the first alarm are both connected with the control device.

In one embodiment, the bottom of the slag receiving box is provided with a second weighing sensor, the top of the upper cover body is provided with a second alarm corresponding to the second weighing sensor, and the second weighing sensor and the second alarm are both connected with the control device.

Drawings

Fig. 1 is a schematic structural view of an automatic chamfering machine according to a first embodiment of the present invention;

FIG. 2 is a schematic structural view of the automatic chamfering machine shown in FIG. 1 after the upper cover and the control device are removed;

FIG. 3 is a schematic structural diagram of a first material suction mechanism of a material loading and suction mechanism of the automatic chamfering machine shown in FIG. 2;

FIG. 4 is a schematic structural view of a chamfering apparatus of the automatic chamfering machine shown in FIG. 1;

FIG. 5 is a schematic structural view of a drill chamfering mechanism of the chamfering apparatus shown in FIG. 4;

FIG. 6 is a schematic view of another operation state of the drill chamfering mechanism shown in FIG. 5;

fig. 7 is a schematic structural view of an automatic chamfering machine according to a second embodiment of the present invention;

fig. 8 is a schematic structural view of a briquette of the automatic chamfering machine shown in fig. 7.

In the figure:

11. a lower cover body; 12. a platform; 13. an upper cover body; 14. a control device; 15. a chip removal hopper; 16. a first alarm; 17. a second alarm;

20. a loading and unloading device; 21. a product to be processed placing table; 22. a finished product placing table; 23. a product processing table; 24. a Y-axis drive mechanism; 25. a conveyance board; 26. a first support frame; 27. a first X-axis drive mechanism; 28. moving the plate along the X axis; 30. a first material suction mechanism; 31. a Z-axis drive assembly; 32. a suction cup mounting frame; 33. a sucker component; 34. a first suction cup; 35. a second suction cup; 40. a second material suction mechanism; 50. a chamfering device; 51. a second support frame; 52. a second X-axis drive mechanism; 53. a first fixing frame; 54. a Z-axis drive mechanism; 55. a second fixing frame; 60. drilling a chamfering mechanism; 61. a barrel; 62. briquetting; 63. a knife edge is formed; 64. a chip groove; 65. a lifting cylinder; 66. a motor; 67. a temperature sensor; 70. chamfering cutter; 71. a connecting end; 72. and drilling a chamfered end.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The first embodiment is as follows:

as shown in fig. 1 to 6, the present embodiment discloses an automatic chamfering machine for drilling and chamfering a mounting hole on an aluminum plate, which includes a lower cover 11 having a platform 12, an upper cover 13 connected to the lower cover 11, a control device 14 mounted on the upper cover 13, and a loading and unloading device 20 and a chamfering device 50 respectively disposed on the platform 12 and both located in the upper cover 13; the upper cover body 13 is provided with a doorway, and the chamfering device 50 is positioned at one side of the loading and unloading device 20 away from the doorway. The loading and unloading device 20 is used for automatically conveying the aluminum plate to be processed to the chamfering device 50 and automatically conveying the processed aluminum plate away from the chamfering device 50; the chamfering device 50 is used for automatically chamfering the mounting holes on the aluminum plate.

A chip removal hopper 15 is arranged on the platform 12, the discharge end of the chip removal hopper 15 extends into the lower cover body 11, and a slag collecting box is arranged in the lower cover body 11 corresponding to the discharge end of the chip removal hopper 15. The arrangement of the chip removal hopper 15 and the slag collection box can ensure that slag chips generated in the chamfering process of the mounting hole of the aluminum plate can be discharged into the slag collection box through the chip leakage hopper 15 when the platform 12 is cleaned.

As shown in fig. 2, the loading and unloading device 20 includes a to-be-processed product placing table 21, a finished product placing table 22, a product processing table 23 located between the to-be-processed product placing table 21 and the finished product placing table 22, a first support frame 26 having two ends respectively connected to the to-be-processed product placing table 21 and the finished product placing table 22, a first X-axis driving mechanism 27 mounted on the first support frame 26, an X-axis moving plate 28 connected to the first X-axis driving mechanism 27, a first material sucking mechanism 30 and a second material sucking mechanism 40 respectively connected to the X-axis moving plate 28, a Y-axis driving mechanism 24 provided on the product processing table 23, and a transport plate 25 connected to the Y-axis driving mechanism 24; the first material suction mechanism 30 is positioned on one side of the second material suction mechanism 40 close to the placing table 21 for the product to be processed. The first X-axis driving mechanism 27 is used for driving the first suction mechanism 30 to move back and forth between the placement table 21 for the product to be processed and the Y-axis driving mechanism 24, and simultaneously driving the second suction mechanism 40 to move back and forth between the Y-axis driving mechanism 24 and the finished product placement table 22; the Y-axis drive mechanism 24 is used to drive the carrier plate 25 to move back and forth between the first support frame 26 and the chamfering apparatus 50.

The working process of the loading and unloading device 20 is as follows: when the Y-axis driving mechanism 24 drives the conveying plate 25 to move to the position of the first supporting frame 26, the second X-axis driving mechanism 52 drives the first sucking mechanism 30 to leave the position of the Y-axis driving mechanism 24 and move to a to-be-processed product placing table to pick up an aluminum plate to be processed, meanwhile, the second X-axis driving mechanism 52 drives the second sucking mechanism 40 to move to the position of the Y-axis driving mechanism 24, and the aluminum plate which is processed is taken down from the conveying plate 25; after the product to be processed is taken down from the conveying plate 25, the first X-axis driving mechanism 27 drives the first sucking mechanism 30 to drive the aluminum plate to be processed to move to the position of the Y-axis driving mechanism 24, the aluminum plate to be processed is placed on the conveying plate 25, meanwhile, the second X-axis driving mechanism 52 drives the second sucking mechanism 40 to drive the aluminum plate to be processed to move to the finished product placing table 22 from the Y-axis driving mechanism 24, and the aluminum plate to be processed is placed on the finished product placing table 22; after the aluminum plate to be processed is placed on the conveying plate 25, the Y-axis driving mechanism 24 drives the conveying plate 25 to drive the aluminum plate to be processed to move to the chamfering device 50, and the chamfering device 50 processes the aluminum plate to be processed on the conveying plate 25; after the chamfering device 50 finishes processing the aluminum plate, the Y-axis driving mechanism 24 drives the conveying plate 25 to return to the first supporting frame 26 with the finished aluminum plate, and when the next aluminum plate to be processed is to be processed, the above-mentioned actions are repeated.

In the present embodiment, the placing table 21 for the product to be processed is provided with a first weighing sensor (not shown) connected to the control device 14. First weighing sensor is used for responding to the weight of waiting to process the aluminum plate that the product placed the platform 21 to weight information transfer to controlling means 14 that will sense, controlling means 14 adjusts each adsorption affinity of inhaling the material mechanism according to the weight information that obtains, so that aluminum plate can not drop from inhaling the material mechanism because the adsorption affinity of inhaling the material mechanism is little at the in-process of inhaling the material mechanism transport. Due to the arrangement of the first weighing sensor, the feeding and discharging device 20 can convey aluminum plates of different specifications, and the universality of the feeding and discharging device 20 is improved.

In the present embodiment, the first suction mechanism 30 and the second suction mechanism 40 have the same structure; as shown in fig. 3, the first suction mechanism 30 includes a Z-axis driving assembly 31 connected to the X-axis moving plate 28, a suction cup mounting bracket 32 connected to the Z-axis driving assembly 31, and a suction cup assembly 33 mounted on the suction cup mounting bracket 32.

The suction cup assembly 33 comprises a first suction cup 34 and a plurality of second suction cups 35, the first suction cup 34 is located in the middle of the suction cup mounting frame 32, and the second suction cups 35 are evenly distributed around the first suction cup 34 in an annular mode, so that the suction cup assembly 33 can suck the aluminum plate more firmly.

As shown in fig. 4, the chamfering device 50 includes a second support frame 51, a second X-axis driving mechanism 52 mounted on the second support frame 51, a first fixing frame 53 connected to the second X-axis driving mechanism 52, a Z-axis driving mechanism 54 connected to the first fixing frame 53, a second fixing frame 55 connected to the Z-axis driving mechanism 54, and a drill chamfering mechanism 60 mounted on the second fixing frame 55. The second X-axis driving mechanism 52 is used for driving the Z-axis driving mechanism 54 to drive the chamfering mechanism 60 to move along the X-axis direction, the Z-axis driving mechanism 54 is used for driving the chamfering mechanism 60 to move up and down, and the chamfering mechanism 60 is used for chamfering the mounting hole of the aluminum plate.

The working process of the chamfering device 50 is as follows: when the Y-axis driving mechanism 24 drives the conveying plate 25 to move to the position of the chamfering device 50, the second X-axis driving mechanism 52 drives the chamfering mechanism 60 to move to the position of the first mounting hole of the aluminum plate on the conveying plate 25, then the Z-axis driving mechanism 54 drives the chamfering mechanism 60 to move downwards to be close to the aluminum plate, and when the mounting hole is close to the aluminum plate, the chamfering mechanism 60 performs chamfering; after chamfering is finished, the Z-axis driving mechanism 54 drives the chamfering mechanism 60 to ascend, and the second X-axis driving mechanism 52 drives the chamfering mechanism 60 to move to the position of the next mounting hole of the aluminum plate for processing. The conveying plate 25 is driven to move in the Y-axis direction through the Y-axis driving mechanism 24, and the drill chamfering mechanism 60 is driven to move in the X-axis direction through the second X-axis driving mechanism 52, so that the drill chamfering mechanism 60 can drill and chamfer mounting holes in different positions on an aluminum plate.

As shown in fig. 5, the chamfering mechanism 60 includes a hollow cylinder 61, a pressing block 62 disposed at the bottom of the cylinder 61, a lifting cylinder 65 and a motor 66 respectively disposed in the cylinder 61, and a chamfering tool 70 connected to an output shaft of the motor 66; the bottom of the cylinder body 61 is provided with a cutter outlet 63 penetrating through the pressing block 62, and the cutter outlet 63 and the chamfer cutter 70 are coaxially arranged; the chamfer cutter 70 includes a connecting end 71 connected to the output shaft of the motor 66 and a drill chamfer end 72 remote from the motor 66. As shown in FIG. 5, when no chamfer is drilled, the drill chamfer end 72 is located within the barrel 61; when the chamfering mechanism 60 needs to drill a chamfer on a certain mounting hole on an aluminum plate, as shown in fig. 6, the pressing block 62 presses the aluminum plate part around the mounting hole, so that the aluminum plate part around the mounting hole is flattened, the chamfering end 72 of the chamfering tool 70 rotates under the action of the motor 66, and then the chamfering end 72 extends out of the cylinder 61 under the driving of the lifting cylinder 65 to drill a chamfer on the mounting hole; after the chamfering operation is finished, the motor 66 stops operating, and the lifting cylinder 65 drives the chamfering tool 70 to return to the barrel 61.

In the present embodiment, the lower end of the knife outlet 63 has an inverted conical shape. By arranging the lower end of the cutter outlet 63 to be in the shape of an inverted cone, the lower end of the cutter outlet 63 is not easily blocked by slag chips generated when the chamfering tool 70 performs chamfering, so that the chamfering tool 70 cannot be clamped by the slag chips.

Example two:

the present embodiment is different from the first embodiment in that: as shown in fig. 7, a product sensor (not shown) is disposed on the product placing table 22, and a first alarm 16 is disposed on the top of the upper cover 13 corresponding to the product sensor. When the second material sucking mechanism 40 places the finished aluminum plate on the finished product placing table 22, the product sensor will sense the product immediately and transmit the information to the control device 14, and the control device 14 controls the first alarm 16 to alarm, so that the worker far away from the chamfering machine can return, and the finished aluminum plate can be taken away from the finished product placing table 22 in time.

The bottom of the slag receiving box is provided with a second weighing sensor (not shown in the figure), the top of the upper cover body 13 is provided with a second alarm 17 corresponding to the second weighing sensor, and the second weighing sensor and the second alarm 17 are both connected with the control device 14. The second weighing sensor is used for sensing the weight of the slag crumbs in the slag collecting box and conveying the weight information to the control device 14, and when the weight of the slag crumbs exceeds the weight information of the slag crumbs prestored in the control device 14, the control device 14 controls the second alarm 17 to give an alarm to remind a worker to treat the slag crumbs in the slag collecting box.

As shown in fig. 8, the bottom surface of the pressing block 62 is provided with at least one chip groove 64 communicating with the cutting edge 63, and the chip groove 64 extends from the cutting edge 63 to the edge of the pressing block 62. When the chamfering tool 70 drills and chamfers on the mounting hole, the aluminum plate and the pressing block 62 vibrate, and slag chips generated during chamfering are conveyed into the chip groove 64 under the vibration effect and move out of the pressing block 62 from the chip groove 64, so that the situation that the chamfering tool 70 is clamped due to the fact that the slag chips are accumulated in the tool outlet 63 is avoided.

In the present embodiment, there are two flutes 64, and the flutes 64 are uniformly distributed annularly around the central axis of the exit edge 63.

Preferably, the flutes 64 have a cross-sectional dimension that decreases progressively from the exit edge 63 in a direction away from the exit edge 63.

The chamfering apparatus 50 further includes a temperature sensor 67, and the temperature sensor 67 is provided on a side surface of the pressing block 62. When the chamfer end 72 of the chamfer cutter 70 is drilled with a chamfer, the chamfer end 72 can generate a large amount of heat, so that the temperature of the chamfer end 72 becomes high, the working time is long, the temperature of the chamfer end 72 can be higher and higher, when the temperature is too high, the chamfer end 72 can be burned out, the temperature sensor 67 is arranged on the side surface of the pressing block 62, the temperature sensor 67 can sense the temperature of the chamfer end 72 through the pressing block 62, and when the temperature sensor 67 senses that the chamfer end 72 is too high, the control device 14 controls the chamfer cutter 70 to stop working.

According to the automatic chamfering machine, the feeding and discharging device 20 is arranged, so that the aluminum plate to be machined is automatically conveyed to the chamfering device 50, the machined aluminum plate is automatically moved away from the position of the chamfering device 50, manual work is not needed, and the safety of workers is guaranteed; in addition, the feeding and the blanking are simultaneously carried out through the first material suction mechanism 30 and the second material suction mechanism 40 which are connected with the first X-axis driving mechanism 27, no time interval exists, and the production efficiency of the aluminum plate is improved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An automatic chamfering machine is used for drilling and chamfering an installation hole on an aluminum plate and is characterized by comprising a lower cover body with a platform, an upper cover body connected with the lower cover body, a control device arranged on the upper cover body, and a feeding and discharging device and a chamfering device which are respectively arranged on the platform and are both positioned in the upper cover body; the upper cover body is provided with a doorway, and the chamfering device is positioned on one side of the feeding and discharging device, which is far away from the doorway; a chip removal hopper is arranged on the platform, the discharge end of the chip removal hopper extends into the lower cover body, and a slag collecting box is arranged in the lower cover body corresponding to the discharge end of the chip removal hopper; the feeding and discharging device comprises a to-be-processed product placing table, a finished product placing table, a product processing table positioned between the to-be-processed product placing table and the finished product placing table, a first support frame with two ends respectively connected with the to-be-processed product placing table and the finished product placing table, a first X-axis driving mechanism installed on the first support frame, an X-axis moving plate connected with the first X-axis driving mechanism, a first material sucking mechanism and a second material sucking mechanism respectively connected with the X-axis moving plate, a Y-axis driving mechanism arranged on the product processing table and a conveying plate connected with the Y-axis driving mechanism; a first weighing sensor connected with the control device is arranged on the to-be-processed product placing table; the first material sucking mechanism is positioned on one side of the second material sucking mechanism, which is close to the placing table of the product to be processed; the chamfering device comprises a second support frame, a second X-axis driving mechanism arranged on the second support frame, a first fixing frame connected with the second X-axis driving mechanism, a Z-axis driving mechanism connected with the first fixing frame, a second fixing frame connected with the Z-axis driving mechanism and a drilling chamfering mechanism arranged on the second fixing frame; the chamfering mechanism comprises a hollow cylinder, a pressing block arranged at the bottom of the cylinder, a lifting cylinder and a motor which are respectively positioned in the cylinder, and a chamfering cutter connected with an output shaft of the motor; a cutter outlet penetrating through the pressing block is formed in the bottom of the cylinder body, and the cutter outlet and the chamfering cutter are arranged coaxially; the chamfering tool comprises a connecting end connected with an output shaft of the motor and a drill chamfering end far away from the motor; when the chamfer is not drilled, the drilling chamfer end is positioned in the cylinder body.

2. The automatic chamfering machine according to claim 1, wherein the first and second suction mechanisms are identical in structure; the first material sucking mechanism comprises a Z-axis driving assembly connected with the X-axis moving plate, a sucker mounting frame connected with the Z-axis driving assembly, and a sucker assembly mounted on the sucker mounting frame; the sucking disc subassembly includes first sucking disc and a plurality of second sucking disc, first sucking disc is located the middle part of sucking disc mounting bracket, the second sucking disc wind first sucking disc annular evenly distributed.

3. The automatic chamfering machine according to claim 1, wherein a lower end of the exit edge is in an inverted conical shape.

4. The automatic chamfering machine according to claim 1, wherein the bottom surface of the pressing block is provided with at least one chip groove communicating with the cutting edge, the chip groove extending from the cutting edge to the edge of the pressing block.

5. The automatic chamfering machine according to claim 4, wherein the number of the chip grooves is at least two, and the chip grooves are evenly distributed annularly around the central axis of the cutting edge.

6. The automatic chamfering machine according to claim 4, wherein a cross-sectional dimension of the chip groove gradually decreases from the cutter outlet toward a direction away from the cutter outlet.

7. The automatic chamfering machine according to claim 1, wherein a product sensor is arranged on the finished product placing table, a first alarm is arranged at the top of the upper cover body corresponding to the product sensor, and the product sensor and the first alarm are both connected with the control device.

8. The automatic chamfering machine according to claim 7, wherein a second weighing sensor is arranged at the bottom of the slag receiving box, a second alarm is arranged at the top of the upper cover body corresponding to the second weighing sensor, and the second weighing sensor and the second alarm are both connected with the control device.