TWM558683U - Electric conduction device for machining spindle - Google Patents

Abstract

An electric conduction device for processing a spindle, which is provided with a rotating shaft with a sleeve hole in a sleeve of the spindle sleeve, and first and second conductive rings are sleeved in an insulating manner in the sleeve hole of the rotating shaft, and the rotation is performed An axially extending first and second groove are formed on the outer ring surface of the shaft, and a carbon brush assembly is disposed on the outer side of the rotating shaft, and a carbon brush holder having first and second carbon brushes is arranged on the outer side of the rotating shaft, and the rotating shaft is connected The first and second conductive members corresponding to the first and second carbon brushes are respectively locked, and the first and second conductive members are respectively fixed to the first and second conductive wires fixed in the first and second grooves of the rotating shaft. Connecting the first and second conductive rings; thereby, when the ultrasonic knife is inserted into the sleeve of the rotating shaft, the first and second carbon brushes can be electrically connected to ensure the stability of the electrical connection. It achieves the practical benefits of stable high-frequency vibration cutting operations and improved service life.

Description

Electrical conduction device for machining spindle

In particular, the present invention provides an electrical conduction device for a machining spindle that ensures stability of electrical connection and stabilizes high-frequency vibration cutting operations and improves service life.

According to the introduction of high-frequency vibration processing mechanism during the processing operation, not only can the surface roughness of the machined surface be improved and the machining accuracy can be improved, but also the cutting resistance can be reduced, and the tool life is increased, which is gradually being widely used.

Please refer to Figure 1 for the new patent case of Taiwan High-speed Electrical Rotary Joint No. M428012, which is mainly erected in the housing 10 with the first conductive element 11 and the second conductive element 12 of the bearing. a first spindle 13 , wherein the outer circumference of the first conductive element 11 and the second conductive element 12 is a first conductive portion 111 , 121 connected to an external power source, and the inner ring is a second conductive portion 112 , 122 A conductive element 11, a second conductive element 12 and a main shaft 13 are insulated from each other; a distal end of the main shaft 13 is provided with a tapered hole 131, and two axially extending shaft holes 132 and two are disposed in the wall of the main shaft 13 Corresponding to the radial through holes 133 of the first conductive element 11 and the second conductive element 12 respectively; and at the end of the two shaft holes 132 of the main shaft 13 respectively, a first power contact 14 and a second power contact 15 are disposed, The first power contact 14 is electrically connected to the second conductive portion 112 of the first conductive element 11 by a first main shaft lead 16 extending through the shaft hole 132 of one side of the main shaft 13. The second power contact 15 is The second spindle lead 17 extending through the other side shaft hole 132 of the main shaft 13 is electrically connected to the second A second electrically conductive portion 122 of the element 12; 13 in the taper hole of the spindle 131 is provided an ultrasonic bonding tool 20, the The ultrasonic tool 20 is provided with a positive power connector end 21 and a negative power connector end 22 for respectively conducting contact with the first power contact 14 and the second power contact 15 to drive the ultrasonic tool 20. High-frequency vibration; however, the electrical connection between the high-speed electrical rotary joint and the ultrasonic cutter 20 still has the following drawbacks:

1. When the ultrasonic tool 20 is connected to the tapered hole 131 of the main shaft 13, the two power supply terminals 21 and 22 of the ultrasonic tool 20 are respectively in contact with the first and second power contacts 14, 15 respectively. The two power connector ends 21, 22 of the ultrasonic tool 20 and the first and second power contacts 14, 15 are electrically connected only by a single point contact, respectively, when the ultrasonic tool 20 is the power connector end 21 When 22 is not exactly aligned with the first and second power contacts 14, 15, the two power connector terminals 21, 22 and the first and second power contacts 14, 15 will not be in stable contact conduction, and during processing. The vibration generated during the cutting process can easily cause the two power connector ends 21, 22 to be out of contact with the first and second power contacts 14, 15 and the momentary open circuit occurs, so that the ultrasonic tool 20 cannot be stably operated. High-frequency vibration, which affects the cutting operation of high-frequency vibration.

2. The first and second conductive elements 11 and 12 of the first and second conductive elements 11 and 12 are electrically conductive, and the first conductive portions 111 and 121 (ie, the outer ring) and the second conductive portion of the first and second conductive elements 11 and 12 are electrically conducted. 112, 122 (ie, the inner ring) and the steel ball between the two have an assembly gap, so when the second conductive portions 112, 122 (ie inner ring) of the first and second conductive elements 11, 12 and the steel ball follow the main axis 13 When the high-speed rotation is performed, the centrifugal force generated by the centrifugal force or the jump generated during the cutting process is likely to cause the second conductive portions 112, 122 (ie, the inner ring) and the steel ball to come out of contact, and an instantaneous disconnection occurs, so that the ultrasonic cutter 20 is caused. The high-frequency vibration cannot be stabilized, and the cutting operation effect of the high-frequency vibration is affected, and when the instantaneous breaking/conduction occurs continuously, the first and second conductive members 11 and 12 are extremely easy to be used. a phenomenon in which a spark discharge is generated between the first conductive portions 111, 121 (ie, the outer ring) and the second conductive portions 112, 122 (ie, the inner ring) and the steel ball, and the first conductive portions 111, 121 (ie, the outer ring), The second conductive portions 112, 122 (ie, the inner ring) and the steel balls are damaged by electrical erosion, thereby affecting the service life of the first and second conductive members 11, 12.

3. The shaft wall of the main shaft 13 is formed into a shaft hole 132 for penetrating the first main shaft lead 16 and the second main shaft lead 17, since the two shaft holes 132 of the main shaft 13 extend axially a considerable distance and It is disposed in the wall of the main shaft 13 and is not only difficult to process, but the outer diameter of the main shaft 13 must be increased, so that the wall thickness of the main shaft 13 is sufficient to form the two-axis hole 132, and the outer diameter of the main shaft 13 is increased. At that time, it is impossible to assemble with a component of a general size, and it is necessary to separately manufacture a mating component for the enlarged spindle 13, which causes trouble in production and assembly.

In view of this, the creator has been engaged in research and development and production experience of related industries for many years, and has conducted in-depth research on the problems currently faced. After long-term efforts and trials, he has finally developed a kind of electrical conduction device for processing spindles. Effectively improve the shortcomings of the knowledge, this is the design purpose of this creation.

The purpose of the present invention is to provide an electrical conduction device for processing a spindle, which is provided with a rotating shaft with a sleeve hole in the inner sleeve of the spindle sleeve, and the first sleeve is arranged in an insulating manner in the sleeve hole of the rotary shaft. a second conductive ring, and an axially extending first and second groove is formed on the outer ring surface of the rotating shaft, and a carbon brush assembly is attached to the outer side of the rotating shaft to be provided with a carbon brush having a first and a second carbon brush a first locking device corresponding to the first and second carbon brushes, and the first and second conductive members are respectively fixed in the first and second slots of the rotating shaft. The first and second wires are electrically connected to the first and second conductive rings; thereby, when the ultrasonic knife is inserted into the sleeve of the rotating shaft, the sleeve is utilized The first and second conductive rings in the hole are in contact with the positive and negative electrodes of the ultrasonic knife in a toroidal contact manner to ensure the stability of the electrical connection, and achieve the practical purpose of stably performing high-frequency vibration cutting operations.

The purpose of the present invention is to provide an electrical conduction device for processing a spindle. When the ultrasonic blade is inserted into the sleeve of the rotating shaft, the first and second conductive rings in the sleeve are in contact with the toroidal surface. The method is respectively in contact with the positive and negative electrodes of the ultrasonic knife, and is electrically connected through the first and second wires of the carbon brush assembly, the first and second conductive members, and the first and second carbon brushes, thereby ensuring electrical connection. The stability is to prevent the occurrence of instantaneous disconnection, and to avoid the phenomenon of spark discharge, and achieve the practical purpose of improving the service life.

The third objective of the present invention is to provide an electrical conduction device for processing a spindle, which is provided with an axially extending first and second groove on the outer surface of the rotating shaft for respectively extending and electrically connecting to the first The first and second wires between the first and second conductive members of the first and second conductive rings and the carbon brush assembly, and the outer diameter of the rotating shaft is not required to be enlarged, and the direct processing can be directly formed on the rotating shaft of the general specification size. The first and second grooves can be assembled with the components of the general specification to achieve the practical purpose of easy assembly and assembly.

Conventional part:

10‧‧‧Shell seat

11‧‧‧First conductive element

111‧‧‧First Conducting Department

112‧‧‧Second Conducting Department

12‧‧‧Second conductive element

121‧‧‧First Conducting Department

122‧‧‧Second Conducting Department

13‧‧‧ Spindle

131‧‧‧ cone hole

132‧‧‧Axis hole

133‧‧‧Perforation

14‧‧‧First power contact

15‧‧‧Second power contact

16‧‧‧First spindle wire

17‧‧‧Second spindle lead

20‧‧‧Supersonic cutter

21‧‧‧Power connector end

22‧‧‧Power connector end

This creative part:

30‧‧‧ spindle holder

301‧‧‧ bearing

302‧‧‧Rotary drive source

31‧‧‧Rotary axis

311‧‧‧ Set of holes

3111‧‧‧First ring groove

3112‧‧‧Second ring groove

312‧‧‧ first trench

313‧‧‧Second trough

32‧‧‧First conductive ring

321‧‧‧First insulation

33‧‧‧Second conductive ring

331‧‧‧Second insulation

40‧‧‧carbon brush assembly

41‧‧‧Carbon holder

411‧‧ ‧ room

4111‧‧‧ input port

4112‧‧‧Outlet

42‧‧‧First conduction piece

421‧‧‧First wire

43‧‧‧Second conduction piece

431‧‧‧Second wire

44‧‧‧Insulation sleeve

45‧‧‧First carbon brush

451‧‧‧First elastic parts

46‧‧‧second carbon brush

461‧‧‧Second elastic parts

47‧‧‧Air filter

48‧‧‧Vacuum Generator

50‧‧‧Ultrasonic Knife

51‧‧‧Processing tools

52‧‧‧Interposed Department

53‧‧‧ positive electrode

54‧‧‧negative electrode

Figure 1: A schematic diagram of the use of the new patent case No. M428012 in Taiwan.

Figure 2: Schematic diagram of the creation.

Fig. 3 is an enlarged schematic view of a portion of Fig. 2A.

Figure 4: Schematic diagram of the structure of the carbon brush assembly.

Figure 5: Schematic diagram of the use of this creation (1).

Figure 6 is an enlarged schematic view of part B of Figure 5.

Figure 7: Schematic diagram of the use of this creation (2).

Figure 8 is an enlarged view of the portion of Figure 7C.

Figure 9: Schematic diagram of the action of the carbon brush assembly.

In order to give your reviewer a better understanding of the creation, a preferred embodiment will be described in conjunction with the drawings, as detailed below: Please refer to Figures 2, 3 and 4 for the electrical conduction of the spindle. The device is provided with a multi-array bearing 301 inside the spindle sleeve 30 for erecting a rotating shaft 31. The spindle housing 30 is provided with a rotary driving source 302 which can be a built-in motor for driving the motor. The rotating shaft 31 rotates, and the rotating shaft 31 can be equipped with a knife-making mechanism (not shown) for performing a broaching or a loose-knife operation. Since the rotary driving source 302 and the knife-cutting mechanism are conventional techniques, It is not the focus of the present invention, so it is not described in detail; the first end of the rotating shaft 31 is provided with a conical sleeve hole 311, and a ring groove is opened on the inner ring surface of the sleeve hole 311 for The first ring groove 3111 and the second ring groove 3112 are formed in the inner ring groove 311 of the sleeve 311 of the rotating shaft 31 in the embodiment. The first conductive ring 32 is sleeved in an insulating manner, and the second conductive ring 33 is sleeved in an insulating manner in the second annular groove 3112. The first conductive ring 32 and the second conductive ring 33 are respectively surrounded by an elastically stretchable and electrically conductive spring, and are disposed between the first conductive ring 32 and the first annular groove 3111. a first insulating layer 321 which may be an insulating adhesive, and a second insulating layer 331 which may be an insulating adhesive between the second conductive ring 33 and the second annular groove 3112, and the first conductive ring 32, The two conductive rings 33 are insulated from the rotating shaft 31; further, an axially extending and open first slot 312 is formed at one side of the toroidal surface of the rotating shaft 31, and an axial extension is provided at the other side. The second groove 313 is open, and the first end of the first groove 312 communicates with the first ring groove 3111, the first end of the second groove 313 communicates with the second ring groove 3112; A carbon brush assembly 40 is attached to the spin A carbon brush holder 41 is disposed on the outer side of the second end of the rotating shaft 31. A cavity 411 is disposed in the carbon brush holder 41, and a first annular conduction is provided in the housing 411 in an insulating manner. The first conductive member 42 and the second conductive member 43 are rotated in the same manner as the rotating shaft 31. In the embodiment, the first conductive member 42 and the second conductive member 43 are rotated. The first conductive member 42 and the second conductive member 43 and the rotating shaft 31 are rotated and insulated by the insulating sleeve 44. The first conductive member 42 is fixed by the extension. The first conductive wire 421 in the first groove 312 of the rotating shaft 31 is electrically connected to the first conductive ring 32, and the second conductive member 43 is fixed to the second groove 313 of the rotating shaft 31. The second wire 431 is electrically connected to the second conductive ring 33. In the embodiment, the first groove 312 and the second groove 313 of the rotating shaft 31 are respectively filled with an insulating glue, so that the first wire The wire 421 and the second wire 431 are respectively fixed in the first groove 312 and the second groove 313 of the rotating shaft 31; and the first elastic member 4 is mounted on the carbon brush holder 41. The first carbon brush 45 is elastically pressed against the ring side of the first conductive member 42 and the second carbon brush 46 is elastically pressed against the ring side of the second conductive member 43 by the second elastic member 461. The first carbon brush 45 and the second carbon brush 46 are electrically connected to a controller (not shown), so that the first conductive ring 32 can pass through the first wire 421, the first conductive member 42 and The first carbon brush 45 is electrically connected to the controller (not shown), and the second conductive ring 33 is electrically connected to the controller via the second wire 431, the second conductive member 43 and the second carbon brush 46. In the present embodiment, the chamber 411 of the carbon brush holder 41 is provided with an input port 4111 and an output port 4112, and an input port 4111 is connected to an air filter 47. 4112 is connected to a vacuum generator 48, and the air in the chamber 411 of the carbon brush holder 41 is sucked by the vacuum generator 48. The air outside the carbon brush holder 41 is filtered through the air filter 47 and then enters the chamber. In 411, the first carbon brush 4 is further flowed by the airflow flowing in the chamber 411 of the carbon brush holder 41. 5 and the second carbon brush 46 and the first conductive member 42 and the second conductive member 43 are pressed against the dust generated by the friction, and the first carbon brush 45 and the second carbon brush 46 and the first conductive member 42 and the first The two conductive members 43 dissipate heat.

Referring to Figures 2, 3, and 4 again, the present invention is to open an axially extending and open first groove 312 and a second groove 313 on the outer ring surface of the rotating shaft 31 to respectively extend The first conductive line 421 and the second conductive line 431 between the first conductive member 42 and the second conductive member 43 of the first conductive ring 32, the second conductive ring 33 and the carbon brush assembly 40 are electrically connected to each other without additional rotation. The outer diameter of the shaft 31 can directly form the first groove 312 and the second groove 313 directly on the rotating shaft 31 of the general specification, and can be assembled with the components of the general specification to achieve the assembly. Easy to make practical benefits of assembly.

Referring to FIGS. 5 and 6, the present invention is provided with an ultrasonic knife handle 50 disposed on the sleeve hole 311 of the rotating shaft 31 during the processing operation. The first end of the ultrasonic knife 50 is mounted. The processing tool 51 has a conical column-shaped insertion portion 52 for inserting into the sleeve hole 311 of the rotating shaft 31, and is provided with a circle on the outer ring surface of the insertion portion 52. The positive electrode 53 and the negative electrode 54 are electrically connected to the inner ultrasonic electrode 53 and the negative electrode 54 respectively (not shown in the drawing); when the insertion portion 52 of the ultrasonic knife 50 is inserted When the sleeve 311 is placed in the sleeve hole 311 of the rotating shaft 31, the first conductive ring 32 and the second conductive ring 33 in the sleeve hole 311 of the rotating shaft 31 are respectively in contact with the positive electrode of the ultrasonic knife 50 in a toroidal contact manner. The first conductive ring 32 is electrically connected to the controller (not shown) via the first conductive line 421, the first conductive member 42 and the first carbon brush 45. The second conductive The ring 33 is electrically connected to the controller (not shown) via the second wire 431, the second conductive member 43 and the second carbon brush 46, because the first conductive ring 3 2 and the second conductive ring 33 is in contact with the positive electrode 53 and the negative electrode 54 of the ultrasonic blade 50 in a toroidal contact manner, because Therefore, even if the ultrasonic knife 50 is slightly deflected, the first conductive ring 32 and the second conductive ring 33 can be kept in contact with the positive electrode 53 and the negative electrode 54 of the ultrasonic blade 50, respectively, to ensure electrical connection. Stability.

Referring to Figures 7, 8, and 9, when the machining operation is performed, the rotary shaft 31 is driven by the rotary drive source 302 in the spindle housing 30 to drive the ultrasonic cutter 50 and the machining tool 51 to rotate at a high speed. And driving the ultrasonic knife 50 and the machining tool 51 to vibrate at a high frequency to perform a high-frequency vibration cutting operation, and during the high-frequency vibration cutting operation, the first carbon brush 45 of the carbon brush assembly 40 and the first The two carbon brushes 46 are in frictional contact with the first conductive member 42 and the second conductive member 43 to generate dust and high heat, that is, the vacuum generator 48 suctions the air in the chamber 411 of the carbon brush holder 41. The air outside the seat 41 is filtered through the air filter 47 and then enters the chamber 411, and the first carbon brush 45 and the second carbon brush 46 are electrically connected to the first one by the airflow flowing in the chamber 411 of the carbon brush holder 41. The member 42 and the second conductive member 43 are pressed against the dust generated during the friction, and the first carbon brush 45 and the second carbon brush 46 are dissipated from the first conductive member 42 and the second conductive member 43; During the cutting operation for performing high-frequency vibration, the first hole in the sleeve hole 311 of the rotating shaft 31 The electric ring 32 and the second conductive ring 33 are in contact with the positive electrode 53 and the negative electrode 54 of the ultrasonic blade 50 in a toroidal contact manner, and the first carbon brush 45 and the second carbon brush of the carbon brush assembly 40 The first carbon brush 45 and the second carbon brush 46 are respectively pressed and contacted with the first conductive member 42 and the second conductive member 43 by the elastic force of the first elastic member 451 and the second elastic member 461. The stability of the electrical connection can be ensured to prevent the occurrence of an instantaneous disconnection and avoid the phenomenon of spark discharge, thereby achieving the practical benefit of stable high-frequency vibration cutting operation and improved service life.

Accordingly, this creation is a practical and progressive design, but there is no disclosure of the same products and publications, thus allowing for new patent applications. The law makes an application.

Claims (10)

An electrical conduction device for processing a spindle, comprising: a spindle sleeve; the rotary shaft is erected in the spindle sleeve, and a sleeve hole is disposed at a first end of the rotation shaft, and the sleeve is respectively provided a first conductive ring and a second conductive ring insulated from the rotating shaft, the rotating shaft is further provided with an axially extending first groove and a second groove on the outer ring surface; the carbon brush assembly is attached to the rotating shaft a carbon brush holder is disposed on the outer side of the second end, and the first conductive member and the second conductive member are electrically connected to each other, and the first conductive member is fixed to the rotating shaft The first wire in the first groove is electrically connected to the first conductive ring, and the second wire is electrically connected to the second wire in a second wire extending in the second groove of the rotating shaft. And the carbon brush holder is provided with a first carbon brush elastically pressed against the first conductive member and a second carbon brush elastically pressed against the second conductive member. The electrical transmission device for processing a spindle according to claim 1, wherein the spindle sleeve is provided with a multi-array bearing for arranging the rotating shaft and a rotary driving source for driving the rotating shaft. The electrical conduction device of the processing spindle according to the first aspect of the invention, wherein the inner ring surface of the sleeve of the rotating shaft is provided with a first ring groove and a second ring groove, and the first ring groove is The first conductive ring is sleeved in an insulating manner, and the second conductive ring is sleeved in an insulating manner in the second annular groove. The electrical conduction device of the processing spindle according to the third aspect of the invention, wherein the first conductive ring and the first ring groove of the rotating shaft are provided with a first insulating layer, the second conductive ring and the A second insulating layer is disposed between the second ring grooves of the rotating shaft. The electrical conduction device for processing a spindle according to claim 1, wherein the first conductive ring and the second conductive ring are respectively looped in a ring shape by an elastically stretchable and electrically conductive spring. The electrical conduction device of the processing spindle according to the first aspect of the invention, wherein the first conductive member and the second conductive member of the carbon brush assembly are coupled to the rotating shaft by an insulating sleeve. The electrical conduction device of the processing spindle according to the first aspect of the invention, wherein the first groove and the second groove of the rotating shaft are respectively filled with an insulating glue, so that the first wire and the second wire The wires are respectively fixed in the first groove and the second groove of the rotating shaft. The electrical conduction device of the processing spindle according to the first aspect of the invention, wherein the first carbon brush of the carbon brush assembly is elastically pressed against the ring side of the first conductive member by a first elastic member The second carbon brush is pressed against the loop side of the second conductive member by a second elastic member. The electrical conduction device of the processing spindle according to the first aspect of the invention, wherein the carbon brush holder of the carbon brush assembly is provided with a chamber, and the chamber is provided with an input port and an output port. The electrical conduction device for processing a spindle according to claim 9, wherein the input port of the carbon brush holder is connected to an air filter, and the output port is connected to a vacuum generator.