CN114147272A

CN114147272A - Ultrasonic milling device

Info

Publication number: CN114147272A
Application number: CN202111448023.5A
Authority: CN
Inventors: 陈川; 陈元平
Original assignee: Hangzhou Success Ultrasonic Equipment Co ltd
Current assignee: Hangzhou Success Ultrasonic Equipment Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-03-08
Anticipated expiration: 2041-12-01
Also published as: CN114147272B

Abstract

The invention belongs to the technical field of milling, and particularly relates to an ultrasonic milling device which comprises a cutter body, a first flange plate, a bearing sleeve, an installation sleeve, a locking nut, a cutter, an aerial insertion device, a lower upper fastening plate, an elastic chuck, a bearing, a second flange plate, a power supply device, a cathode polar ring, a first electrode isolating ring, an anode polar ring, a second electrode isolating ring, a fastening cap, a carbon brush mechanism and an ultrasonic transducer, wherein after a carbon brush rod is worn for a long time, two third springs on two sides can correspondingly extend to ensure that the carbon brush rods on two sides are in close contact with the anode polar ring and the cathode polar ring, and because the carbon brush rod is worn, the abrasion loss is very small relative to the pre-compression amount of the third springs, the change of the pre-compression force of the springs is relatively small after the abrasion, and the extrusion force of the carbon brush rod on the anode polar ring and the cathode polar ring is relatively small, sufficient pressing force can be ensured after abrasion.

Description

Ultrasonic milling device

Technical Field

The invention belongs to the technical field of milling, and particularly relates to an ultrasonic milling device.

Background

The numerical control lathe can process the appearance of a complex revolving body. Milling is to fix the blank, feed the blank with a high-speed rotating milling cutter, and cut the desired shape and features. Traditional milling is more used for milling simple profile features such as contours and grooves. The numerical control milling machine can process complex shapes and characteristics. The milling and boring center can be used for three-axis or multi-axis milling and boring and is used for machining, dies, checking tools, clamping tools, thin-wall complex curved surfaces, artificial prostheses, blades and the like.

With the development of the milling technology, the requirement on the rotation speed of the spindle is higher and higher, and the development of the ultrasonic power supply technology, the ultrasonic milling processing combining the ultrasonic high-frequency vibration and the high-speed rotation of the spindle is regarded as a technical pioneer of high-precision and high-efficiency processing, and is commonly used for various daily fine processing.

The ultrasonic amplitude transformer is an important component of an ultrasonic vibration system, and has the main functions of amplifying the particle displacement or speed of mechanical vibration and concentrating ultrasonic energy on a smaller area, namely energy concentration, so that the ultrasonic amplitude transformer is also called an ultrasonic gear shift lever or an ultrasonic energy concentrator. However, if the amplitude transformer is added during milling, the industrial practicability is reduced, firstly, the amplitude transformer needs to be designed to be lengthened by times according to the ultrasonic characteristics, the size of a high-speed rotating part of the milling device is increased, the installation is inconvenient, the high-speed rotation is not facilitated, in addition, the integral rigidity is greatly weakened due to the existence of the amplitude transformer, and in addition, the power of the transducer using torque vibration or bending vibration is obviously smaller.

Patent application No. 20140752599.4 addresses to some extent the above problems, but there are also the following problems: firstly, the ultrasonic transducer can not dissipate heat due to heat after working for a long time, and the ultrasonic transducer is burnt out. Secondly, need change when the transducer damages the back, demolish the electric wire, pull up the rotatory dismantlement of winding on the downside and lift off, it is very inconvenient to change. Thirdly, the carbon brush is used for supplying power, after the carbon brush is used for a long time, the carbon brush is worn, the length of a spring arrangement space is limited, after the carbon brush is worn, the force generated by the deformation of the spring is relatively large, along with the aggravation of friction loss, the pressure of the carbon brush on a ring sheet is reduced, and the bad condition is easy to generate.

The invention designs an ultrasonic milling device to solve the problems.

Disclosure of Invention

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

an ultrasonic milling device comprises a cutter body, a first flange plate, a bearing sleeve, an installation sleeve, a locking nut, a cutter, an aerial insertion, a lower upper fastening plate, an elastic chuck, a bearing, a second flange plate, a power supply device, a cathode ring, a first electrode isolation ring, an anode ring, a second electrode isolation ring, a fastening cap, a carbon brush mechanism and an ultrasonic transducer, wherein the ultrasonic transducer comprises two piezoelectric ceramics and an upper cover which are distributed up and down; the three conductive sleeves are arranged on the inner wall of the cutter body, one conductive column is arranged in each of the three conductive sleeves, a second spring is arranged between each conductive column and the corresponding conductive sleeve, and each second spring is a compression spring and has pre-pressure; the conductive sleeve is connected with the anode ring and the cathode ring through wires; the three conductive columns are in one-to-one corresponding extrusion contact fit with the three conductive discs.

The carbon brush mechanism comprises carbon brush rods, mounting shells, a fourth spring, fixing plates, connecting arc plates and a third spring, wherein the two fixing plates are symmetrically and fixedly mounted on the power supply device through bolts; two connecting arc plates are symmetrically arranged on each carbon brush rod, the four connecting arc plates are positioned on the same side and are fixed on the carbon-free brush rods and are connected through a third spring, and the third spring is an extension spring and has pretension force.

The outer circular surface of the upper end of the lower upper fastening plate is provided with two sections of external thread areas and two sections of external thread gap areas, and the external thread areas and the external thread gap areas are alternately distributed; the inner circular surface at the lower end of the cutter body is provided with two sections of internal thread regions and two sections of internal thread gap regions, and the internal thread regions and the internal thread gap regions are alternately distributed; the internal thread region and the internal thread gap region cooperate with the external thread region and the external thread gap region.

And two air holes communicated with the cavity at the inner side of the lower and upper fastening plate are formed on the outer circular surface of the lower and upper fastening plate.

Preferably, an elastic pad is arranged at the position where the upper end of the lower upper fastening plate is matched with the cutter body.

As a preferable scheme, two mounting ring grooves are vertically formed in a wall body with an internal thread region and an internal thread gap region at the lower end of the cutter body, and the mounting ring grooves are communicated with the internal thread gap region; the outer side wall surfaces of the two mounting ring grooves are provided with square openings penetrating through the outer wall surface of the cutter body; an irregular round mounting plate is slidably mounted in each mounting ring groove, and a first spring is mounted between each mounting plate and each mounting ring groove; the outer circular surface of the mounting plate is provided with an adjusting block which penetrates out of the corresponding square opening; the inner circular surface of the mounting plate is fixedly provided with a limiting arc plate, and the limiting arc plate is matched with the cutter body in an internal thread gap area and an external thread gap area on the lower tightening plate.

Preferably, a baffle plate with a circular hole in the middle is fixedly installed at the upper position of the inner cavity of the lower and upper fastening plates, a partition plate is fixedly installed at the upper side of the baffle plate in the inner cavity of the lower and upper fastening plates, the partition plate divides the inner cavity of the lower and upper fastening plates at the upper side of the baffle plate into two parts, guide inclined plates which are distributed in a staggered manner are fixedly installed in the two divided parts of the cavity, and one ends of two air holes in the inner cavity of the lower and upper fastening plates are respectively located at the upper sides of the two guide inclined plates; two air holes are positioned on the outer wall surface of the lower upper fastening plate and are provided with semicircular guide plates.

Preferably, a weight member for balancing the three wire columns is installed in the conductor.

Preferably, a threading opening which is communicated with the inside and the outside and is used for an electric wire connected with the anode polar ring and the cathode polar ring and the ultrasonic transducer to pass through is formed in the cutter body; the knife body is internally provided with a mounting square groove for mounting the three conductive sleeves.

Preferably, a wire groove through which a connecting wire between the aerial socket and the carbon brush mechanism passes is formed in the outer wall surface of the power supply device.

Compared with the prior art, the invention has the advantages that:

1. in the invention, the electricity transmitted by the aerial plug can be transmitted to the carbon brush rod through the fixing plate and the mounting shell, and after the carbon brush rod is worn after being used for a long time, on one hand, the length of the fourth spring is increased; on the other hand, the two third springs on the two sides can also extend correspondingly to ensure that the carbon brush rods on the two sides are in close contact with the anode ring and the cathode ring, and the third springs tension the carbon brush rods from the two sides.

2. When the transducer is damaged and replaced, the lower and upper fastening plates are manually rotated to enable the lower and upper fastening plates to rotate 90 degrees relative to the cutter body, the external thread area on the lower and upper fastening plates can be aligned with the internal thread gap area on the cutter body, and at the moment, the lower and upper fastening plates can be quickly taken down to replace the transducer; after the replacement is finished, aligning the external thread area on the lower tightening plate with the internal thread gap area on the cutter body again, inserting the lower tightening plate, rotating the lower tightening plate to enable the lower tightening plate to rotate 90 degrees relative to the cutter body, after the lower tightening plate rotates 90 degrees relative to the cutter body, enabling the external thread area on the lower tightening plate to be in threaded fit with the internal thread area on the cutter body, and finishing the installation of the lower tightening plate; compared with the prior art that the lower and upper fastening plates need to be rotated for multiple circles, the lower and upper fastening plates can be dismounted only after the matched threads between the lower and upper fastening plates and the cutter body are disengaged, and the lower and upper fastening plates are relatively convenient to dismount and mount relative to the cutter body.

3. The invention can play a role in dissipating heat generated by the ultrasonic transducer in the working process through the opened air holes, and prevents the ultrasonic transducer from being burnt out due to incapability of dissipating heat due to heat after working for a long time.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of the overall component distribution.

Fig. 3 is a schematic view of the tool mounting.

Figure 4 is a schematic view of a lower upper plate structure.

Fig. 5 is a schematic structural diagram of the partition plate and the guide sloping plate.

Fig. 6 is a schematic view of the lower tightening plate and the cutter body installation.

Fig. 7 is a schematic view of the distribution of the limiting arc plates.

Fig. 8 is a schematic view of the arrangement of the male thread regions and the male thread relief regions.

Fig. 9 is a schematic view of the distribution of the internal thread regions and the internal thread relief regions.

Figure 10 is a schematic view of a limiting arc plate installation.

Fig. 11 is a schematic view of the distribution of piezoelectric ceramics.

Fig. 12 is a schematic view of a piezoelectric ceramic mounting.

Fig. 13 is a schematic view of a blade structure.

Fig. 14 is a schematic view of the positive and negative electrode ring installation.

Fig. 15 is a schematic view of a carbon brush mechanism distribution.

Fig. 16 is a schematic illustration of an aerial installation.

Figure 17 is a schematic view of a wire chase distribution.

Fig. 18 is a schematic view of a carbon brush mechanism.

Number designation in the figures: 1. a cutter body; 2. a first flange plate; 3. a bearing sleeve; 4. installing a sleeve; 5. locking the nut; 6. a cutter; 7. aerial plug; 8. an elastic pad; 9. a lower upper tightening plate; 10. an elastic collet; 11. a bearing; 12. a baffle plate; 13. a separator plate; 14. a guide sloping plate; 15. air holes; 16. a guide plate; 17. an adjusting block; 18. mounting a plate; 19. a limiting arc plate; 20. an external threaded region; 21. an external thread relief area; 22. an internal threaded region; 23. an internal thread relief region; 24. a square opening; 25. mounting a ring groove; 26. a first spring; 27. a balancing weight; 28. a second flange plate; 29. a power supply device; 32. an insulating sleeve; 33. a conductive plate; 34. a conductive post; 35. a second spring; 36. a conductive sleeve; 37. a threading opening; 38. installing a square groove; 39. an ultrasonic transducer; 40. a negative electrode ring; 41. a first electrode isolation ring; 42. a positive electrode ring; 43. a second electrode isolation ring; 44. a square shifting groove; 45. a fastening cap; 46. a carbon brush mechanism; 47. connecting the arc plates; 48. a third spring; 50. a wire slot; 51. a carbon brush bar; 52. mounting a shell; 53. a fourth spring; 54. a fixing plate; 55. piezoelectric ceramics; 56. and (7) covering.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must be of a particular length, orientation, configuration and operation in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the ultrasonic cutting tool comprises a tool body 1, a first flange 2, a bearing sleeve 3, a mounting sleeve 4, a lock nut 5, a tool 6, an aerial insert 7, a lower upper fastening plate 9, an elastic chuck 10, a bearing 11, a second flange 28, a power supply device 29, a negative electrode ring 40, a first electrode isolating ring 41, a positive electrode ring 42, a second electrode isolating ring 43, a fastening cap 45, a carbon brush mechanism 46 and an ultrasonic transducer 39, wherein as shown in fig. 11, the bearing sleeve 3 is mounted on the outer side of the upper end of the tool body 1, and the bearing 11 is mounted between the bearing sleeve 3 and the tool body 1; the upper end of the bearing sleeve 3 is detachably provided with an annular first flange plate 2 through bolts; an annular power supply device 29 is mounted on the lower side of the bearing sleeve 3, a mounting sleeve 4 is mounted on the lower side of the power supply device 29, and the bearing sleeve 3, the power supply device 29 and the mounting sleeve 4 are detachably connected through bolts; a second flange 28 is arranged between the lower end of the bearing sleeve 3 and the mounting sleeve 4, and the second flange 28 is detachably connected with the power supply device 29 and the mounting sleeve 4 through bolts; as shown in fig. 14, a negative electrode ring 40 and a positive electrode ring 42 are vertically mounted on the inner side of the power supply device 29, a first electrode isolation ring 41 is mounted between the negative electrode ring 40 and the positive electrode ring 42, and a second electrode isolation ring 43 is mounted on the lower side of the positive electrode ring 42; an annular fastening cap 45 is mounted on the lower side of the second electrode isolation ring 43, and the annular fastening cap 45 is in threaded fit connection with the lower end of the mounting sleeve 4; two groups of carbon brush mechanisms 46 which are distributed up and down are arranged in the power supply device 29, and the two groups of carbon brush mechanisms 46 are correspondingly matched with the anode polar ring 42 and the cathode polar ring 40; as shown in fig. 16, the aerial plug 7 is mounted on the mounting sleeve 4, and the aerial plug 7 is connected with the two sets of carbon brush mechanisms 46 through wires; an ultrasonic transducer 39 is arranged in a cavity in the middle of the cutter body 1, and the ultrasonic transducer 39 is connected with a positive electrode ring 42 and a negative electrode ring 40 through electric wires; the lower tightening plate 9 is installed at the lower side of the cutter body 1, as shown in fig. 3, the cutter 6 is installed at the lower side of the lower tightening plate 9 through the collet chuck 10 and is fixed by the lock nut 5; as shown in fig. 12, the ultrasonic transducer 39 includes two piezoelectric ceramics 55 and an upper cover 56 which are distributed up and down, three insulating sleeves 32 are installed on the outer sides of the two piezoelectric ceramics 55 and the upper cover 56, cover-shaped conductive discs 33 are installed on the lower sides of the two piezoelectric ceramics 55 and the upper cover 56, circular holes are opened on the lower end faces of the conductive discs 33, and the circular side edges of the conductive discs 33 extend upwards to wrap the outer sides of the corresponding insulating sleeves 32; the three conductive sleeves 36 are mounted on the inner wall of the cutter body 1, one conductive column 34 is mounted in each of the three conductive sleeves 36, a second spring 35 is mounted between each conductive column 34 and the corresponding conductive sleeve 36, and each second spring 35 is a compression spring and has pre-pressure; the conductive sleeve 36 is connected with the anode polar ring 42 and the cathode polar ring 40 through wires; the three conductive posts 34 are in one-to-one corresponding press-contact fit with the three conductive pads 33.

The working principle of the cutter body 1, the first flange plate 2, the bearing sleeve 3, the mounting sleeve 4, the locking nut 5, the cutter 6, the aviation plug 7, the lower upper fastening plate 9, the elastic chuck 10, the bearing 11, the second flange plate 28, the power supply device 29, the negative electrode ring 40, the first electrode isolating ring 41, the positive electrode ring 42, the second electrode isolating ring 43, the fastening cap 45, the carbon brush mechanism 46 and the ultrasonic transducer 39 in the invention is completely the same as the corresponding components and working functions in the patent with the patent application number of 20140752599.4, and the invention is the prior art.

As shown in fig. 15 and 18, the carbon brush mechanism 46 includes a carbon brush rod 51, a mounting shell 52, a fourth spring 53, a fixing plate 54, a connecting arc plate 47, and a third spring 48, wherein as shown in fig. 18, two fixing plates 54 are symmetrically and fixedly mounted on the power supply device 29 through bolts, one mounting shell 52 is fixedly mounted on each fixing plate 54, one carbon brush rod 51 is slidably mounted in each mounting shell 52, and the fourth spring 53 is mounted between the carbon brush rod 51 and the corresponding mounting shell 52; two connecting arc plates 47 are symmetrically arranged on each carbon brush rod 51, two connecting arc plates 47 which are positioned on the same side in the four connecting arc plates 47 and fixed on the carbon brush rods 51 are connected through a third spring 48, and the third spring 48 is an extension spring and has pretension force.

In the invention, the electricity transmitted by the aviation plug 7 is transmitted to the carbon brush rod 51 through the fixing plate 54 and the mounting shell 52, and after the carbon brush rod 51 is worn after being used for a long time, on one hand, the length of the fourth spring 53 is lengthened; on the other hand, the two third springs 48 on both sides will also extend correspondingly to ensure that the carbon brush rods 51 on both sides are in close contact with the anode ring 42 and the cathode ring 40, because the third springs 48 of the present invention tension the carbon brush rods 51 from both sides, compared with the existing spring that is extruded at the rear side of the carbon brush rods 51, the space length in which the third springs 48 of the present invention can be arranged is far longer than that of the existing spring, i.e. the third springs 48 can have a longer pre-compression amount, and the abrasion amount of the carbon brush rods 51 after abrasion is very small relative to the pre-compression amount of the third springs 48, so that when the pre-compression force of the spring changes relatively little after abrasion, the extrusion force of the carbon brush rods 51 on the anode ring 42 and the cathode ring 40 changes relatively little, and a sufficient extrusion force can be ensured after abrasion.

As shown in fig. 8, the outer circular surface of the upper end of the lower upper fastening plate 9 has two sections of external thread regions 20 and two sections of external thread gap regions 21, and the external thread regions 20 and the external thread gap regions 21 are alternately distributed; as shown in fig. 9 and 13, the inner circumferential surface of the lower end of the cutter body 1 has two sections of internal thread regions 22 and two sections of internal thread gap regions 23, and the internal thread regions 22 and the internal thread gap regions 23 are alternately distributed; the internal thread region 22 and the internal thread cut-out region 23 cooperate with the external thread region 20 and the external thread cut-out region 21.

When the transducer is damaged and replaced, the lower and upper fastening plates 9 are manually rotated to enable the lower and upper fastening plates 9 to rotate 90 degrees relative to the cutter body 1, the external thread area 20 on the lower and upper fastening plates 9 is aligned with the internal thread gap area 23 on the cutter body 1, and at the moment, the lower and upper fastening plates 9 can be quickly taken down to replace the ultrasonic transducer 39; after the replacement is completed, aligning the external thread area 20 on the lower tightening plate 9 with the internal thread gap area 23 on the cutter body 1 again, inserting the lower tightening plate 9, rotating the lower tightening plate 9 to enable the lower tightening plate 9 to rotate 90 degrees relative to the cutter body 1, after the lower tightening plate 9 rotates 90 degrees relative to the cutter body 1, the external thread area 20 on the lower tightening plate 9 is in threaded fit with the internal thread area 22 on the cutter body 1, and the installation of the lower tightening plate 9 is completed; compared with the prior art that the lower and upper fastening plates 9 need to be rotated for a plurality of circles, the lower and upper fastening plates 9 can be dismounted only after the matched threads between the lower and upper fastening plates 9 and the cutter body 1 are disengaged, and the lower and upper fastening plates 9 are relatively convenient to dismount and mount relative to the cutter body 1.

As shown in fig. 4, two air holes 15 are opened on the outer circumferential surface of the lower upper fastening plate 9, which is downward, and are communicated with the cavity inside the lower upper fastening plate 9. The invention can play a role of heat dissipation for the heat generated by the ultrasonic transducer 39 in the working process through the opened air holes 15, and prevent the ultrasonic transducer 39 from burning out due to the heat which can not be dissipated after long-time working.

As shown in fig. 2, an elastic pad 8 is arranged at the upper end of the lower tightening plate 9 where the upper end is matched with the cutter body 1. The elastic pad 8 is used for enabling the lower and upper fastening plates 9 to rotate 90 degrees after being inserted into the cutter body 1, so that the external thread area 20 on the lower and upper fastening plates 9 is matched with the internal thread area 22 on the cutter body 1, and the lower and upper fastening plates 9 move upwards relative to the cutter body 1 in the process of matching the external thread area 20 on the lower and upper fastening plates 9 with the internal thread area 22 on the cutter body 1, so that the elastic pad 8 can meet the relative movement of the lower and upper fastening plates 9 and the cutter body 1, and the condition that the lower and upper fastening plates 9 are in close contact with the end surface of the cutter body 1 and have no movable stroke is avoided; meanwhile, the elastic pad 8 is compressed and then is in threaded fit to play a pre-tightening role.

As shown in fig. 9 and 13, two mounting ring grooves 25 are vertically formed in the wall body of the cutter body 1 having the internal thread region 22 and the internal thread notch region 23 at the lower end thereof, and the mounting ring grooves 25 are communicated with the internal thread notch region 23; the outer side wall surfaces of the two mounting ring grooves 25 are provided with square openings 24 penetrating through the outer wall surface of the cutter body 1; as shown in fig. 10, an irregular circular mounting plate 18 is slidably mounted in each mounting ring groove 25, and as shown in fig. 6 and 7, a first spring 26 is mounted between the mounting plate 18 and the mounting ring groove 25; an adjusting block 17 is arranged on the outer circular surface of the mounting plate 18, and the adjusting block 17 penetrates through a corresponding square opening 24; the inner circular surface of the mounting plate 18 is fixedly provided with a limiting arc plate 19, and the limiting arc plate 19 is matched with an internal thread gap area 23 on the cutter body 1 and an external thread gap area 21 on the lower fastening plate 9.

According to the invention, after the lower and upper fastening plates 9 are arranged on the cutter body 1, and the external thread area 20 on the lower and upper fastening plates 9 is matched with the internal thread area 22 on the cutter body 1, the limiting arc plate 19 can limit the relative rotation of the lower and upper fastening plates 9 and the cutter body 1, so that the lower and upper fastening plates 9 and the cutter body 1 are prevented from rotating relatively due to vibration and finally becoming loose in the using process; affecting the use of the tool 6.

As shown in fig. 3 and 4, a baffle plate 12 with a circular hole in the middle is fixedly installed at a position above the inner cavity of the lower and upper fastening plate 9, a partition plate 13 is fixedly installed at a position above the baffle plate 12 in the inner cavity of the lower and upper fastening plate 9, the partition plate 13 divides the inner cavity of the lower and upper fastening plate 9 at the upper side of the baffle plate 12 into two parts, as shown in fig. 4 and 5, guide inclined plates 14 which are distributed in a staggered manner are fixedly installed in the two divided parts, and one ends of two air holes 15 which are located in the inner cavity of the lower and upper fastening plate 9 are respectively located at the upper sides of the two guide inclined plates 14; two air holes 15 are respectively provided with a semicircular guide plate 16 at the position of the outer wall surface of the lower upper fastening plate 9.

In the invention, the isolating plate 13 and the inclined guide plate 14 are used for guiding the gas entering the lower upper fastening plate 9, so that the gas can be ensured to fully radiate the ultrasonic transducer 39.

As shown in fig. 11, a weight 27 for balancing three wire columns is installed in the conductor.

As shown in fig. 13, a threading opening 37 is formed in the cutter body 1, and the threading opening is internally and externally communicated, so that electric wires connected with the positive pole ring 42 and the negative pole ring 40 and the ultrasonic transducer 39 can pass through the threading opening; the cutter body 1 is internally provided with a square mounting groove 38 for mounting three conductive sleeves 36.

As shown in fig. 17, a wire groove 50 through which a connection wire between the aerial plug 7 and the carbon brush mechanism 46 passes is formed on an outer wall surface of the power supply device 29.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

The implementation mode is as follows: when the device designed by the invention is used, after the carbon brush rods 51 are worn after being used for a long time, the pressure of the two third springs 48 on the two sides can be correspondingly changed, and the carbon brush rods 51 on the two sides are ensured to be in close contact with the anode polar ring 42 and the cathode polar ring 40, therefore, the third springs 48 designed by the invention tension the carbon brush rods 51 from the two sides, compared with the existing spring extruded on the rear side of the carbon brush rods 51, the space length in which the third springs 48 can be arranged in the invention is far longer than the existing space length, namely, the third springs 48 can have a longer precompression amount, and the abrasion amount of the carbon brush rods 51 is very small relative to the precompression amount of the third springs 48 after being worn, so that the change of the pre-pressure of the spring after being worn is relatively small, the change of the extrusion force of the carbon brush rods 51 on the anode polar ring 42 and the cathode polar ring 40 is relatively small, and the enough extrusion force can be ensured after being worn.

When the ultrasonic transducer 39 is damaged and needs to be replaced in the using process, firstly, the two limiting arc plates 19 are moved back to the corresponding mounting ring grooves 25 by manually pressing the two adjusting blocks 17, the rotation limitation between the lower and upper fastening plates 9 and the cutter body 1 is removed, then the lower and upper fastening plates 9 are manually rotated to enable the lower and upper fastening plates 9 to rotate 90 degrees relative to the cutter body 1, the external thread area 20 on the lower and upper fastening plates 9 is aligned with the internal thread gap area 23 on the cutter body 1, and at the moment, the lower and upper fastening plates 9 can be quickly taken down to replace the ultrasonic transducer 39; after the replacement is completed, the external thread area 20 on the lower fastening plate 9 is aligned with the internal thread gap area 23 on the cutter body 1 again, firstly, two adjusting blocks 17 are manually pressed to enable two limiting arc plates 19 to move back to the corresponding mounting ring grooves 25 and keep a pressing state, the lower fastening plate 9 is inserted, the lower fastening plate 9 is rotated to enable the lower fastening plate 9 to rotate 90 degrees relative to the cutter body 1, after the lower fastening plate 9 rotates 90 degrees relative to the cutter body 1, the external thread area 20 on the lower fastening plate 9 is in threaded fit with the internal thread area 22 on the cutter body 1, then, the hand is loosened to release the pressing of the two adjusting blocks 17, the limiting arc plates 19 move into the gap external thread area 21 on the lower fastening plate 9 and the internal thread gap area 23 on the cutter body 1 under the action of the first spring 26, the limiting effect is achieved on the relative rotation of the lower fastening plate 9 and the cutter body 1, and the relative rotation of the lower fastening plate 9 and the cutter body 1 due to vibration is prevented in the using process, finally, loosening; affecting the use of the tool 6.

Claims

1. The utility model provides an ultrasonic milling device, it includes cutter body, first ring flange, bearing sleeve, installation sleeve, lock nut, cutter, aviation plug, lower top tightening plate, collet, bearing, second ring flange, power supply unit, negative pole polar ring, first electrode spacer ring, anodal polar ring, second electrode spacer ring, fastening cap, carbon brush mechanism, ultrasonic transducer, its characterized in that: the ultrasonic transducer comprises two piezoelectric ceramics and an upper cover which are distributed up and down, three insulating sleeves are arranged on the outer sides of the two piezoelectric ceramics and the upper cover, cover-shaped conductive discs are arranged on the lower sides of the two piezoelectric ceramics and the upper cover, a circular hole is formed in the lower end face of each conductive disc, and the circular side edge of each conductive disc extends upwards to wrap the outer side of the corresponding insulating sleeve; the three conductive sleeves are arranged on the inner wall of the cutter body, one conductive column is arranged in each of the three conductive sleeves, a second spring is arranged between each conductive column and the corresponding conductive sleeve, and each second spring is a compression spring and has pre-pressure; the conductive sleeve is connected with the anode ring and the cathode ring through wires; the three conductive columns are in one-to-one corresponding extrusion contact fit with the three conductive discs;

the carbon brush mechanism comprises carbon brush rods, mounting shells, a fourth spring, fixing plates, connecting arc plates and a third spring, wherein the two fixing plates are symmetrically and fixedly mounted on the power supply device through bolts; each carbon brush rod is symmetrically provided with two connecting arc plates, two connecting arc plates which are positioned on the same side and fixed on the carbon-free brush rods are connected through a third spring, and the third spring is an extension spring and has pretension;

the outer circular surface of the upper end of the lower upper fastening plate is provided with two sections of external thread areas and two sections of external thread gap areas, and the external thread areas and the external thread gap areas are alternately distributed; the inner circular surface at the lower end of the cutter body is provided with two sections of internal thread regions and two sections of internal thread gap regions, and the internal thread regions and the internal thread gap regions are alternately distributed; the internal thread area and the internal thread gap area are matched with the external thread area and the external thread gap area;

2. An ultrasonic milling device according to claim 1, characterized in that: and an elastic pad is arranged at the matching part of the upper end of the lower upper fastening plate and the cutter body.

3. An ultrasonic milling device according to claim 1, characterized in that: two mounting ring grooves are formed in the wall body with an internal thread region and an internal thread gap region at the lower end of the cutter body in an up-and-down mode, and the mounting ring grooves are communicated with the internal thread gap region; the outer side wall surfaces of the two mounting ring grooves are provided with square openings penetrating through the outer wall surface of the cutter body; an irregular round mounting plate is slidably mounted in each mounting ring groove, and a first spring is mounted between each mounting plate and each mounting ring groove; the outer circular surface of the mounting plate is provided with an adjusting block which penetrates out of the corresponding square opening; the inner circular surface of the mounting plate is fixedly provided with a limiting arc plate, and the limiting arc plate is matched with the cutter body in an internal thread gap area and an external thread gap area on the lower tightening plate.

4. An ultrasonic milling device according to claim 1, characterized in that: a baffle plate with a circular hole in the middle is fixedly arranged on the upper position of the inner side cavity of the lower and upper fastening plate, a partition plate is fixedly arranged on the upper side of the baffle plate in the inner side cavity of the lower and upper fastening plate, the partition plate divides the inner side of the lower and upper fastening plate on the upper side of the baffle plate into two parts, guide inclined plates which are distributed in a staggered manner are fixedly arranged in the two separated parts, and one ends of the two air holes in the inner side cavity of the lower and upper fastening plate are respectively arranged on the upper sides of the two guide inclined plates; two air holes are positioned on the outer wall surface of the lower upper fastening plate and are provided with semicircular guide plates.

5. An ultrasonic milling device according to claim 1, characterized in that: and a balancing weight used for balancing the three wire columns is arranged in the conductor.

6. An ultrasonic milling device according to claim 1, characterized in that: a threading opening which is internally and externally communicated and is used for electric wires connected with the anode polar ring and the cathode polar ring and the ultrasonic transducer to pass through is formed in the cutter body; the knife body is internally provided with a mounting square groove for mounting the three conductive sleeves.

7. An ultrasonic milling device according to claim 1, characterized in that: and a wire groove for the connection wire between the aerial plug and the carbon brush mechanism to pass through is formed in the outer wall surface of the power supply device.