CN116586649A - Dynamic vibration-damping boring cutter for deep hole machining - Google Patents
Dynamic vibration-damping boring cutter for deep hole machining Download PDFInfo
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- CN116586649A CN116586649A CN202310502450.XA CN202310502450A CN116586649A CN 116586649 A CN116586649 A CN 116586649A CN 202310502450 A CN202310502450 A CN 202310502450A CN 116586649 A CN116586649 A CN 116586649A
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- cutter
- tool
- groove
- launder
- cutter head
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- 238000003754 machining Methods 0.000 title claims abstract description 20
- 238000013016 damping Methods 0.000 title claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims description 26
- 230000000994 depressogenic effect Effects 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims description 5
- 239000000110 cooling liquid Substances 0.000 abstract description 23
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 24
- 229910052742 iron Inorganic materials 0.000 description 12
- 239000002826 coolant Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000012809 cooling fluid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/10—Cutting tools with special provision for cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention belongs to the technical field of machining tools, and particularly provides a dynamic vibration damping boring cutter for deep hole machining, which comprises a cutter body and a cutter head, wherein a cutter groove is formed in the cutter seat, the cutter head is fixed in the cutter groove, a first launder corresponding to the bottom of the cutter head is formed in the bottom surface of the cutter groove, a second launder is formed in the cutter seat, cooling liquid passes through the back surface of the cutter head in the flowing process, so that the back surface of the cutter head is rapidly cooled, then enters the first launder at the bottom of the cutter head and finally flows out from the outer end of the first launder, and because the first launder corresponds to the bottom of the cutter head, the cooling liquid brings out the heat of the half part at the bottom of the cutter head along the first launder to the outer side of the cutter seat, and the heat generated when the cutter head cuts a workpiece is cooled by the cooling liquid in a traditional mode, so that the cooling efficiency of the cutter head is improved, the service life of the cutter head is prolonged, and the frequency of sharpening is reduced.
Description
Technical Field
The invention relates to the technical field of machining tools, in particular to a dynamic vibration damping boring cutter for deep hole machining.
Background
The boring cutter is a common cutter for machining and is mostly applied to boring environments of shaft parts or sleeve parts, and consists of a cutter body, a cutter seat and a cutter head fixed on the cutter seat, wherein the cutter head is a core part and directly participates in cutting of a hole wall of a workpiece. The cutter body of the boring cutter is made of spring steel, and when the cutter body is impacted or collided, vibration reduction protection can be implemented on the cutter head fixed at the end part of the cutter body by utilizing the performance of the spring steel, in particular to a ceramic cutter, so that the cutter head can be prevented from being broken.
When the cutting temperature speed is increased, the cutting temperature of the tool bit can be gradually increased, if the cutting fluid is not spread on the tool bit, the service life of the tool bit is directly influenced, the high-frequency sharpening phenomenon occurs, when the general cutting speed exceeds 20%, the durability of the tool bit is reduced by about 46%, namely, besides the cutting speed influences the service life of the tool bit, the heat dissipation efficiency of the cooling fluid on the tool bit also influences the service life of the tool bit, and the existing tool bit is fixed on the tool holder through the mounting groove (positioning groove), so that the part of the tool bit deeper than the mounting groove cannot be well cooled directly by the cooling fluid, and the cooling fluid can only act on the outside of the tool bit at the first time when sprayed out of the cooling tube, so that the problem of how to fully cool the tool bit of the boring tool bit by the cooling fluid is solved in the current machining industry is solved.
Disclosure of Invention
The invention aims to solve the technical problems that: through the mode that sets up a plurality of launders on the blade holder, make the coolant liquid fully act on the upper and lower two parts of tool bit to when making the tool bit participate in cutting operation, the high temperature that produces is cooled off rapidly, with this improvement tool bit life, reduction sharpening frequency.
According to the technical scheme, the dynamic vibration damping boring cutter for deep hole machining comprises a cutter body, wherein a cutter holder is arranged at the front end of the cutter body, a cutter head is arranged on the cutter holder, a cutter groove is formed in the cutter holder, the cutter head is fixed in the cutter groove, the back surface and the inner surface of the cutter head are abutted against two inner side surfaces of the cutter groove, a first launder corresponding to the bottom of the cutter head is formed in the bottom surface of the cutter groove, a second launder is formed in the cutter holder, the second launder is adjacent to the back surface of the cutter head and is communicated with the back surface of the cutter head, one end of the first launder extends to the inner end surface of the cutter groove and is communicated with the second launder, the other end of the first launder penetrates to the outer end surface of the cutter groove, the second launder is a semicircular groove, the top end of the second launder is flush with the top surface of the cutter holder, the bottom end of the second launder is communicated with the cutter groove and is perpendicular to the cutter groove, the second launder is a semicircular top end, and a second interception component is arranged at the top end of the cutter launder.
As a further preferable mode, the bottom surface of the tool holder is an inclined surface which is gradually inclined upwards from one end adjacent to the tool body to the other end, and corners are arranged at the positions, adjacent to the tool body, of the upper surface and the lower surface of the tool holder.
As a further preferred aspect, the cutter holder is provided with an inclined hole, one end of the inclined hole is communicated with the second flow groove, the other end of the inclined hole is communicated with one end of the cutter holder adjacent to the cutter body, a stepped hole is formed in the inclined hole, a sealing bearing is embedded in the stepped hole, the interception component comprises a rotating rod and a ball seat, the rotating rod is assembled in the sealing bearing, one end of the rotating rod extends into the second flow groove, the other end of the rotating rod penetrates out of the cutter holder, the ball seat is fixed on the rotating rod and is located in the second flow groove, the ball seat is adjacent to the inner end of the cutter head, and the ball seat covers a half part of the top opening of the second flow groove.
As a further preferable mode, an auxiliary groove is formed at the joint of the knife groove and the second launder, and the auxiliary groove extends upwards to a fifth part of the second launder along the bottom end of the second launder.
Preferably, the top surface of the tool holder is a depressed surface, and the depressed surface gradually descends from the edge of the tool holder toward the direction of the second launder.
Further preferably, a rounded corner is provided at a top edge of the second launder, the rounded corner being in contact with the depressed surface.
As a further preferred mode, the outer end of the rotating rod is provided with a friction wheel, the cutting edge of the cutter head faces out of the cutting face of the cutter holder, the rolling face of the friction wheel exceeds the cutting edge of the cutter head and is located on the same side of the cutting edge of the cutter holder, the ball seat is driven to rotate in the second flow groove by the rotating rod when the friction wheel rotates, the inner wall surface of the second flow groove is provided with first spherical pits, the first spherical pits are at least two, and distributed on two sides of the ball seat, balls are installed in the first spherical pits in a rolling mode, and rolling surfaces of the balls are in rolling contact with the ball seat, so that leakage holes enabling the top ends of the second flow groove to be semi-covered are formed between the balls and the ball seat.
As a further preferable mode, the inner surface of the cutter head is provided with second spherical pits which are respectively matched with the shapes of the ball seat and the ball, a threaded hole is formed between the middle part of the cutter head and the cutter groove in a penetrating mode, the cutter head is fixed in the cutter groove in a mode of matching bolts through the threaded hole, and the ball seat and the ball are rolled in the second spherical pits.
As a further preferable mode, the cutter body is made of spring steel, a threaded hole is formed between the front end of the cutter body and the cutter holder, the cutter holder is detachably fixed on the cutter body in a mode of matching a bolt through the threaded hole, the corner is arc-shaped, and the corner is communicated with the outer end of the threaded hole and is in the same straight line with the threaded hole.
Compared with the prior art, the invention has the beneficial effects that:
when the cutting edge of the tool bit and the hole wall of the workpiece form cutting action, in the process of discharging the scrap iron along the upper surface of the tool holder, the cooling liquid can flow outwards along the upper surface of the tool holder when being sprayed on the tool holder to cool the tool bit, in order to achieve the purpose of fully utilizing the cooling liquid, in particular, the cooling liquid can flow not only from the upper surface of the tool holder, but also flow to me along the bottom surface of the tool holder so as to rapidly and thoroughly cool the tool bit.
The first launder is a plurality of places and is arranged in a sinking way, a flowing gap is formed between the first launder and the bottom surface of the tool bit, and when the cooling liquid is sprayed to the tool apron or directly sprayed to the tool bit to cool the upper surface of the tool bit, a large amount of cooling liquid flows into the first launder along the second launder, and the cooling liquid flows through the back surface of the tool bit in the flowing process, so that the back surface of the cooling liquid is quickly cooled, then enters the first launder at the bottom of the tool bit and finally flows outwards from the outer end of the first launder.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention;
FIG. 2 is a schematic view of the tool post of the present invention with a partial structure and with the tool post partially broken away, and with the tool bit and the blocking assembly removed;
FIG. 3 is a schematic view of a cutter head only according to the present invention;
FIG. 4 is a schematic view of the present invention in its overall state with parts removed and partially enlarged;
FIG. 5 is a schematic top plan view of the present invention;
fig. 6 is a schematic diagram of the application of the present invention when applied to boring operations.
In the figure: 1. a cutter body; 2. a tool apron; 21. a depressed surface; 3. a cutter head; 31. a back surface; 32. an inner face; 33. a second spherical pit; 4. a knife slot; 41. a groove is formed; 5. a first launder; 6. a second launder; 61. round corners; 62. a first spherical pit; 63. a ball; 7. an interception component; 71. a rotating rod; 72. a ball seat; 8. inclined holes; 81. a stepped hole; 82. sealing the bearing; 9. a corner; 10. a friction wheel; 11. and (5) a leak hole.
Detailed Description
The foregoing and other embodiments and advantages of the invention will be apparent from the following, more complete, description of the invention, taken in conjunction with the accompanying drawings. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention.
As shown in fig. 1-6, the power vibration damping boring tool for deep hole machining provided in this embodiment includes a tool body 1, a tool holder 2 is mounted at the front end of the tool body 1, a tool bit 3 is mounted on the tool holder 2, a tool slot 4 is provided on the tool holder 2, the tool bit 3 is fixed in the tool slot 4, the back 31 and the inner face 32 of the tool bit 3 are abutted against two inner sides of the tool slot 4, a first flow slot 5 corresponding to the bottom of the tool bit 3 is provided on the bottom of the tool slot 4, a second flow slot 6 is provided on the tool holder 2, the second flow slot 6 is adjacent to the back 31 of the tool bit 3 and is communicated with the back 31 of the tool bit 3, one end of the first flow slot 5 extends to the inner end face of the tool slot 4 and is communicated with the second flow slot 6, the other end of the first flow slot 5 penetrates to the outer end face of the tool slot 4, the second flow slot 6 is a semicircular slot, the top end of the second flow slot 6 is flush with the top face of the tool bit 2, the bottom of the second flow slot 6 is communicated with the tool slot 4 and is perpendicular to the tool slot 4, the second flow slot 6 is semicircular, the top end of the second flow slot 6 is blocked by a blocking component 7 is provided on the top end of the second flow slot 6, and a blocking component 7 is covered on the top end of the second flow slot 6.
The bottom surface of the tool holder 2 is an inclined surface which gradually inclines upwards from one end adjacent to the tool body 1 towards the other end, and corners 9 are arranged at the positions, adjacent to the tool body 1, of the upper surface and the lower surface of the tool holder 2.
The cutter holder 2 is provided with an inclined hole 8, one end of the inclined hole 8 is communicated with the second flow groove 6, the other end of the inclined hole 8 is communicated with one end of the cutter holder 2 adjacent to the cutter body 1, a stepped hole 81 is formed in the inclined hole 8, a sealing bearing 82 is embedded in the stepped hole 81, the interception component 7 comprises a rotating rod 71 and a ball seat 72, the rotating rod 71 is assembled in the sealing bearing 82, one end of the rotating rod 71 extends in the second flow groove 6, the other end of the rotating rod 71 penetrates out of the cutter holder 2, the ball seat 72 is fixed on the rotating rod 71 and is located in the second flow groove 6, the ball seat 72 is adjacent to the inner end of the cutter head 3, and the ball seat 72 covers the half part of the top opening of the second flow groove 6.
In the boring cutter in this embodiment, when the cutting edge of the cutter head 3 and the hole wall of the workpiece (hereinafter, referred to as the hole wall) form a cutting action in actual use, in the process of discharging scrap iron along the upper surface of the cutter head 2, when cooling the cutter head 3 by spraying cooling liquid on the cutter head 2, the cooling liquid flows outwards along the upper surface of the cutter head 2, in order to fully utilize the cooling liquid, especially, the cooling liquid flows not only from the upper surface of the cutter head 2 but also flows towards me along the bottom surface of the cutter head 2, so that the cutter head 3 is rapidly and thoroughly cooled, therefore, in the invention, a first flow groove 5 corresponding to the bottom of the cutter head 3 is arranged in a cutter groove 4 for installing the cutter head 3, a second flow groove 6 with the bottom communicated with the first flow groove 5 is also arranged on the cutter head 2, the first flow groove 5 is formed in a plurality of positions, and a flow gap is formed between the first flow groove 5 and the bottom surface of the cutter head 3 in a sinking manner, the cooling liquid is sprayed to the tool holder 2 or directly sprayed to the tool bit 3 to cool the upper surface of the tool bit 3, and a large amount of cooling liquid flows into the first flow groove 5 along the second flow groove 6, and the cooling liquid flows through the back surface 31 of the tool bit 3 in the flowing process, so that the back surface 31 is rapidly cooled, then enters into the auxiliary groove 41 opened at the joint of the tool bit 4 and the second flow groove 6, and the cooling liquid is rapidly accumulated through the auxiliary groove 41 and then flows out from the first flow groove 5 after being rapidly accumulated along the bottom end of the second flow groove 6 to the fifth of the second flow groove 6, and the heat of the bottom half part of the tool bit 3 is outwards taken out in the process that the cooling liquid flows to the outer side of the tool holder 2 along the first flow groove 5 because the first flow groove 5 is opened on the bottom surface of the tool bit 4, in other words, the heat generated when the tool bit 3 cuts a workpiece is cooled by the cooling liquid in a traditional way, and the purpose of synchronously cooling the bottom surface is achieved, so that the cooling efficiency of the tool bit 3 is improved, the service life of the tool bit is prolonged, and the sharpening frequency is reduced. The reason is that the cooling liquid can enter the cutter groove 4, and the cutter groove 4 is provided with the structure on the cutter seat 2, so that the cooling area of the cutter seat 2 is increased, the heat generated during cutting of the cutter head 3 is transferred to the cutter seat 2, and the cutter seat 2 can be rapidly cooled, so that the heat exchange efficiency of the cutter head 3 on the cutter seat 2 is improved, and the cooling efficiency is improved.
In this embodiment, the blocking member 7 is disposed to block the upper side of the second flow groove 6 in a semi-shielding manner by the ball seat 72 at the inner end thereof, and the ball seat 72 is also rotatable at the top end of the second flow groove 6, so that the ball seat 72 discharges the strip-shaped scrap iron blocked at the top end thereof outwardly along the top surface of the tool holder 2 by the rotational action thereof to prevent the scrap iron from falling into the second flow groove 6 to cause the blocking of the second flow groove 6, in addition to the entry of the cooling liquid into the second flow groove 6.
As shown in fig. 1 and 2, in the present embodiment, in order to allow the coolant injected onto the holder 2 to participate to the second flow channel 6 to the maximum extent and to cool the entire surface of the bottom surface of the insert head 3 along the second flow channel 6 into the first flow channel 5, the top surface of the holder 2 is a depressed surface 21 for collecting the coolant, and the depressed surface 21 is gradually depressed from the edge of the holder 2 toward the second flow channel 6.
As shown in fig. 3 and 4, the tip edge of the second flow groove 6 is provided with a rounded corner 61 that contacts the depressed surface 21, and when the coolant collected by the depressed surface 21 is discharged into the second flow groove 6, the coolant flows smoothly when passing over the rounded corner 61.
As shown in fig. 1, 2, 5 and 6, the outer end of the rotating rod 71 is provided with a friction wheel 10, the cutting edge of the tool bit 3 faces the cutting surface of the tool holder 2, the rolling surface of the friction wheel 10 exceeds the cutting edge of the tool bit 3 and is on the same side as the cutting edge side of the tool holder 2, when the friction wheel 10 rotates, the rotating rod 71 drives the ball seat 72 to rotate in the second flow groove 6, the inner wall surface of the second flow groove 6 is provided with a first spherical pit 62, the first spherical pit 62 is at least two places and is distributed on two sides of the ball seat 72, the first spherical pit 62 is internally provided with a ball 63 in a rolling way, and the rolling surface of the ball 63 is in rolling contact with the ball seat 72, so that a leak hole 11 which enables the top end of the second flow groove 6 to be semi-covered is formed between the ball 63 and the ball seat 72. When the tool is used, the friction wheel 10 enters the inner hole of the workpiece along with the tool, the cutting edge of the tool bit 3 contacts the hole wall, machining allowance on the hole wall is cut, the workpiece rotates during cutting, the tool bit 3 is static, the hole wall is simultaneously rotated by the friction wheel 10 rubbed by the hole wall when the workpiece rotates except for the allowance cutting of the tool bit 3, the friction wheel 10 rotates synchronously, the ball seat 72 is rotated by the rotating rod 71 when the friction wheel 10 rotates, the ball seat 72 utilizes the rotating action to discharge the strip-shaped scrap iron intercepted at the top end of the ball seat 72 outwards along the top surface of the tool apron 2, so that the scrap iron is prevented from falling into the second flow groove 6, the second flow groove 6 is blocked, and as the ball seat 72 is arranged in the second flow groove 6 to participate in the interception of the scrap iron, rolling balls 63 are arranged at the top end of the second flow groove 6 through the first spherical concave pits 62, and the balls 63 are in friction contact with the ball seat 72, the balls 63 are driven to rotate when the ball seat 72 rotates, the balls 63 and the ball seat 72 rub together to form a semi-covering structure at the top end of the second flow groove 6, and the contact surface joint group 11 of the balls is utilized, the top end of the second flow groove 6 is further blocked, and the interception effect of the scrap iron is improved, and the top end of the second flow groove 11 is still blocked by the second flow groove 6 is increased, and the interception effect is improved, and the interception effect of the scrap iron is further, and the top end of the second flow groove 11 is blocked.
As shown in fig. 3, the inner surface 32 of the tool bit 3 is provided with a second spherical pit 33 which is matched with the shapes of the ball seat 72 and the ball 63, a threaded hole is formed between the middle part of the tool bit 3 and the tool slot 4, the tool bit 3 is fixed in the tool slot 4 in a mode of matching a bolt with the threaded hole, meanwhile, the ball seat 72 and the ball 63 are rolled in the second spherical pit 33, namely, the ball seat 72 is arranged on the tool bit 2 along with the rotating rod 71, the rest ball 63 is extruded between the second spherical pit 33 and the first spherical pit 62 when the tool bit 3 is arranged, the ball 63 can be removed when the tool bit 3 is removed, the ball 63 is only intercepted by the ball seat 72 when the tool bit 3 is used for strip-shaped scrap iron, the top opening of the second flow slot 6 is enlarged at the moment, the flow speed of the cooling liquid flowing from the top end of the second flow slot 6 to the first flow slot 5 is increased, and when the crushed scrap iron is used for mounting, a larger interception area is formed after the balls 63, so that large particles of crushed scrap iron are prevented from entering the second flow slot 6, and the second flow slot 6 and the second flow slot 5 is blocked, therefore, the tool bit 3 can be more flexibly arranged, and the structure of the tool bit 63 is more flexible, and the structure is used.
The cutter body 1 is made of spring steel, has vibration damping performance, a threaded hole is formed between the front end of the cutter body 1 and the cutter holder 2, the cutter holder 2 is detachably fixed on the cutter body 1 in a mode of matching a bolt through the threaded hole, the corner 9 is arc-shaped, the corner 9 is communicated with the outer end of the threaded hole and is in the same straight line with the threaded hole, when the bolt is removed from the threaded hole to remove the cutter holder 2, the corner 9 is smoothly and excessively communicated with the outer end of the threaded hole, and the back of a hand cannot be blocked when the bolt is removed.
The above-described embodiments are provided to further explain the objects, technical solutions, and advantageous effects of the present invention in detail. It should be understood that the foregoing is only illustrative of the present invention and is not intended to limit the scope of the present invention. It should be noted that any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without departing from the spirit and principles of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. A dynamic vibration damping boring cutter for deep hole machining is characterized by comprising a cutter body (1), wherein a cutter holder (2) is arranged at the front end of the cutter body (1), a cutter head (3) is arranged on the cutter holder (2), a cutter groove (4) is formed in the cutter holder (2), the cutter head (3) is fixed in the cutter groove (4), the back surface (31) of the cutter head (3) is abutted against two inner side surfaces of the cutter groove (4) with an inner surface (32), a first flow groove (5) corresponding to the bottom of the cutter head (3) is formed in the bottom surface of the cutter groove (4), a second flow groove (6) is formed in the cutter holder (2), the second flow groove (6) is adjacent to the back surface (31) of the cutter head (3), one end of the first flow groove (5) extends to the inner end surface of the cutter groove (4) and is communicated with the second flow groove (6), the other end surface of the cutter groove (5) is perpendicular to the top surface of the second flow groove (4) of the cutter groove (4), the second launder (6) is semi-circular, the top of second launder (6) is equipped with interception subassembly (7), interception subassembly (7) half cover be in the top of second launder (6).
2. The power vibration-damping boring tool for deep hole machining according to claim 1, wherein the bottom surface of the tool holder (2) is an inclined surface gradually inclined upwards from one end adjacent to the tool body (1) toward the other end, and corners (9) are arranged at the positions of the upper and lower surfaces of the tool holder (2) adjacent to the tool body (1).
3. The dynamic vibration absorbing boring tool for deep hole machining according to claim 1, wherein the tool holder (2) is provided with an inclined hole (8), one end of the inclined hole (8) is communicated with the second flow groove (6), the other end of the inclined hole (8) penetrates through one end of the tool holder (2) adjacent to the tool body (1), a stepped hole (81) is formed in the inclined hole (8), a sealing bearing (82) is embedded in the stepped hole (81), the blocking assembly (7) comprises a rotating rod (71) and a ball seat (72), the rotating rod (71) is assembled in the sealing bearing (82), one end of the rotating rod (71) extends into the second flow groove (6), the other end of the rotating rod (71) penetrates out of the tool holder (2), the ball seat (72) is fixed on the rotating rod (71), the ball seat (72) is located in the second flow groove (6), the ball seat (72) is adjacent to the inner end of the ball seat (3), and the opening of the second flow groove (6) is covered by one end of the ball seat (72).
4. A power vibration-damping boring tool for deep hole machining according to claim 3, characterized in that an additional groove (41) is opened at the connection of the tool groove (4) and the second flow groove (6), the additional groove (41) extending up to one fifth of the second flow groove (6) along the bottom end of the second flow groove (6).
5. The dynamic vibration absorbing boring tool for deep hole machining according to claim 4, wherein the top surface of the tool holder (2) is a depressed surface (21), and the depressed surface (21) is gradually depressed from the edge of the tool holder (2) toward the second flow groove (6).
6. The power vibration-damping boring tool for deep hole machining according to claim 5, characterized in that the top edge of the second launder (6) is provided with a fillet (61) that meets the depressed face (21).
7. The dynamic vibration absorbing boring tool for deep hole machining according to claim 6, wherein the outer end of the rotating rod (71) is provided with a friction wheel (10), the cutting edge of the tool bit (3) faces out of the cutting surface of the tool holder (2), the rolling surface of the friction wheel (10) exceeds the cutting edge of the tool bit (3) and is on the same side of the cutting edge side of the tool holder (2), the ball seat (72) is driven to rotate in the second launder (6) by the rotating rod (71) when the friction wheel (10) rotates, the inner wall surface of the second launder (6) is provided with a first spherical pit (62), the first spherical pit (62) is at least two places and is distributed on two sides of the ball seat (72), a ball (63) is installed in the first spherical pit (62) in a rolling manner, and the rolling surface of the ball (63) is in rolling contact with the ball seat (72), so that a half-hole (11) covering the top end of the second launder (6) is formed between the ball seat (63).
8. The dynamic vibration absorbing boring tool for deep hole machining according to claim 7, wherein the inner surface (32) of the tool bit (3) is provided with a second spherical pit (33) which is respectively matched with the shapes of the ball seat (72) and the ball (63), a threaded hole is formed between the middle part of the tool bit (3) and the tool slot (4), and the ball seat (72) and the ball (63) are rolled in the second spherical pit (33) while the tool bit (3) is fixed in the tool slot (4) in a threaded hole and bolt matching mode.
9. The dynamic vibration absorbing boring tool for deep hole machining according to claim 2, wherein the tool body (1) is made of spring steel, a threaded hole is formed between the front end of the tool body (1) and the tool holder (2), the tool holder (2) is detachably fixed on the tool body (1) through a mode of matching a bolt with the threaded hole, the corner (9) is arc-shaped, and the corner (9) is communicated with the outer end of the threaded hole and is in the same straight line with the threaded hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310502450.XA CN116586649B (en) | 2023-05-06 | 2023-05-06 | Dynamic vibration-damping boring cutter for deep hole machining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310502450.XA CN116586649B (en) | 2023-05-06 | 2023-05-06 | Dynamic vibration-damping boring cutter for deep hole machining |
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| CN116586649A true CN116586649A (en) | 2023-08-15 |
| CN116586649B CN116586649B (en) | 2023-11-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117754010A (en) * | 2024-02-21 | 2024-03-26 | 江苏久保联实业有限公司 | boring cutter device with variable boring diameter for furnace tube |
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|---|---|---|---|---|
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| CN116586649B (en) | 2023-11-14 |
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