CN114101726B - Adjustable rotary cutting tool - Google Patents

Adjustable rotary cutting tool Download PDF

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Publication number
CN114101726B
CN114101726B CN202111400457.8A CN202111400457A CN114101726B CN 114101726 B CN114101726 B CN 114101726B CN 202111400457 A CN202111400457 A CN 202111400457A CN 114101726 B CN114101726 B CN 114101726B
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China
Prior art keywords
hole
adjusting
column
limiting
disc
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CN114101726A (en
Inventor
周文元
朱艳
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Jiangsu Liuyidao Precision Machinery Co ltd
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Jiangsu Liuyidao Precision Machinery Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B27/00Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

The invention discloses an adjustable rotary cutting tool, which belongs to the technical field of cutting tools and comprises a cutter disc, a threaded column and a cutter handle; the lower surface of the cutter head is provided with a threaded hole; the circumferential surface of the cutter head is uniformly provided with cutter handle holes; a sunken notch is formed in one inner side wall of the cutter handle hole; a screw rod is rotatably connected in the sinking groove; one end of the screw rod is connected with a rotating shaft extending into the blind hole, and the rotating shaft is connected with a driven wheel; the threaded column is rotationally connected with an adjusting column; the upper end of the adjusting column is connected with an adjusting disc; the adjusting disc is connected with an end face gear ring meshed with the driven wheel; the side of the knife handle is fixed with a fixing block which is in clearance fit with the sinking groove opening, and the fixing block is provided with a threaded through hole which is matched with the screw rod. According to the invention, the adjusting disc drives the screw rod to rotate, and the screw rod is used for synchronously adjusting the position of each knife handle, so that the cutting radius of the cutter is adjusted, and the problems that the cutting radius of the existing cutter is fixed, and the production cost is increased due to more investment of cutters with different diameters are solved.

Description

Adjustable rotary cutting tool
Technical Field
The invention relates to the technical field of cutting tools, in particular to an adjustable rotary cutting tool.
Background
Cutting tools are tools used for cutting machining in machine manufacturing, and are widely used in lathes, milling machines, and machining centers. Since tools used in machine manufacturing are basically used for cutting metal materials, the tools are generally understood as metal cutting tools, and conventional rotary cutting tools have a plurality of cutting inserts mounted on a circumferential surface of a cutter head or a cutter holder, and the surface of a workpiece is milled or the inner wall of a hole is machined by the cutting inserts through rotation of the tool.
However, in the conventional rotary cutting tool, the cutting radius of the tool is fixed, and when a workpiece is machined, the machining allowance requirements of rough machining and finish machining are met, so that when holes with different diameters are machined, the cutting tool of a cutter disc or a cutter seat with different diameters needs to be replaced, and thus, the tools with different diameters need to be input in machining production, and the overall production cost is increased.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide an adjustable rotary cutting tool, which can realize synchronous position adjustment of tool handles by driving a screw rod to rotate through an adjusting disc, thereby realizing adjustment of the cutting radius of the tool and solving the problems that the cutting radius of the existing tool is fixed, and the production cost is increased due to more tool investment of different diameters.
In order to solve the technical problems, the invention adopts the following technical scheme: the present invention provides an adjustable rotary cutting tool comprising: the cutter head, the threaded column and the cutter handle. The lower surface of the cutter head is provided with a threaded hole, and the inner top surface of the threaded hole is provided with a blind hole; the circumferential surface of the cutter head is uniformly provided with cutter handle holes; a sunken notch is formed in one inner side wall of the cutter handle hole; a screw rod is rotatably connected in the sinking groove; one end of the screw rod is fixedly connected with a rotating shaft, one end of the rotating shaft extends into the blind hole, and the rotating shaft is fixedly connected with a driven wheel.
The threaded column is matched with the threaded hole; a connecting hole is formed in the center of the threaded column, and an adjusting column is rotationally connected in the connecting hole; the circumferential surface of the upper end of the adjusting column is fixedly connected with an adjusting disc, and the lower end surface of the adjusting column is provided with a wrench notch; the upper surface of the adjusting disc is fixedly connected with an end face gear ring, and the end face gear ring is meshed with a driven wheel and used for synchronously driving the screw rod to rotate through the adjusting disc.
The cutter handle is matched with the cutter handle hole, and one end of the cutter handle extends out of the cutter handle hole and is used for mounting a cutting blade; the side face of the knife handle is fixedly connected with a fixing block in clearance fit with the sinking groove opening, and the fixing block is provided with a threaded through hole matched with the screw rod and used for driving the knife handle to move along the length direction through the rotation of the screw rod.
Preferably, the top wall in the blind hole is fixedly connected with a guide pillar; the guide post sleeve is provided with a spring and a guide sleeve; the upper end of the spring abuts against the top wall in the blind hole, the lower end of the spring abuts against the upper end face of the guide sleeve, and the spring is used for pushing the guide sleeve towards the lower end and limiting the rotation of the guide sleeve in the circumferential direction through the guide pillar; the lower end face of the guide sleeve is fixedly connected with a limiting disc; the lower surface of the limiting disc is circumferentially provided with limiting teeth in an array manner; the upper surface of the adjusting disc is provided with limiting grooves which are matched with the limiting teeth in a one-to-one correspondence mode and used for limiting the circumferential rotation of the adjusting disc through the limiting disc.
Preferably, the wrench notch penetrates through the upper end face of the adjusting column and is used for pushing the limiting disc upwards through the wrench notch by utilizing a wrench, so that the limiting teeth are separated from the limiting groove, and the adjusting disc is rotated through the wrench.
Preferably, the adjusting column is of a hollow tubular structure, and a top column is inserted in the adjusting column; the upper end face of the top column is fixedly connected with a limiting block; the lower surface of the limiting block abuts against the upper end surface of the adjusting column; the lower terminal surface of fore-set is seted up to the spanner notch for utilize the spanner to push away spacing dish through the fore-set upper end top for spacing tooth and spacing groove separation, and utilize the spanner to drive the synchronous rotation of regulation post through the fore-set, realize rotating the adjustment disk.
Preferably, the guide pillar is of a prismatic structure, and the inner wall of the guide sleeve is of a prismatic hole structure matched with the guide pillar.
Preferably, the top column is connected with the adjusting column through a guide flat key.
Preferably, the upper end surface of the adjusting column is lower than the upper surface of the adjusting disc, and the adjusting disc is provided with a through hole which is concentric with the adjusting column; the limiting block is positioned in the through hole, and the upper surface of the through hole is not higher than the upper surface of the adjusting disc.
Preferably, the screw rod sleeve is provided with a compression spring, one end of the compression spring is abutted to the inner side wall of the sinking groove, and the other end of the compression spring is abutted to the side face of the fixing block.
Preferably, the upper surface of the cutter head is provided with a screw hole communicated with the cutter handle hole, and the cutter head is connected with a fastening screw through the screw hole to fix the cutter handle.
The invention has the beneficial effects that: according to the invention, the threaded columns are connected in the tool apron, the tool shanks are movably inserted into the tool shank holes, the adjusting disc is rotated by the wrench, the end face gear ring is matched with the driven wheel, the screw is synchronously driven to rotate, the screw is matched with the threaded through hole of the fixed block, and the tool shanks are driven to move, so that the positions of the tool shanks are synchronously adjusted, the cutting radius of the tool is adjusted, the tool is convenient to adapt to the processing of workpieces with different apertures, the investment of the number of tools is reduced, and the integral production cost is effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an adjustable rotary cutting tool according to an embodiment of the present invention.
Fig. 2 is a schematic structural view from the bottom of fig. 1.
Fig. 3 is a front view of the structure of fig. 1.
Fig. 4 is a cross-sectional view taken at a-a in fig. 3.
Fig. 5 is a cross-sectional view at B-B in fig. 3.
Fig. 6 is an enlarged view of the structure of the portion C in fig. 4.
FIG. 7 is a half sectional view of the tool holder.
Fig. 8 is a schematic structural view of the threaded post and the adjustment disk.
Fig. 9 is a half sectional view of fig. 8.
FIG. 10 is a schematic view of the structure of the tool shank.
Fig. 11 is a schematic structural view of the guide sleeve and the limiting disc.
Fig. 12 is a structural diagram of the bottom view of fig. 11.
Description of reference numerals: 1-cutter head, 2-threaded column, 3-cutter handle, 4-guide column, 101-threaded hole, 102-blind hole, 103-cutter handle hole, 104-countersunk notch, 105-screw rod, 106-driven wheel, 107-compression spring, 108-screw hole, 201-adjusting column, 202-adjusting disk, 203-wrench notch, 204-end gear ring, 205-limiting groove, 206-top column, 207-limiting block, 301-fixing block, 302-threaded through hole, 401-spring, 402-guide sleeve, 403-limiting disk and 404-limiting tooth.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1-3, the present invention provides an adjustable rotary cutting tool, comprising: the milling machine tool comprises a cutter head 1, a threaded column 2 and a cutter handle 3, wherein a cutter handle shaft is arranged on the cutter head 1 and is used for being connected with a main shaft of a milling machine or a machining center.
As shown in fig. 7, a threaded hole 101 is formed in the lower surface of the cutter head 1, and a blind hole 102 is formed in the inner top surface of the threaded hole 101; the circumferential surface of the cutter head 1 is uniformly provided with cutter handle holes 103, and the cutter handle holes 103 can be rectangular holes.
A sinking groove opening 104 arranged along the length direction of the handle hole 103 is formed in the inner side wall of the handle hole 103; a screw 105 is rotatably connected in the sunken groove opening 104, a rotating shaft is welded at one end of the screw 105, and one end of the rotating shaft extends into the blind hole 102 and is fixedly connected with a driven wheel 106 through welding or interference fit. The screw 105 and the shaft may be an integral structure.
As shown in fig. 4-6, the threaded stud 2 mates with the threaded bore 101, and the blind bore 102 has a diameter smaller than the diameter of the threaded bore 101 for defining the position of the threaded stud 2 when the threaded stud 2 mates with the threaded bore 101. The center of the threaded column 2 is provided with a connecting hole, and the adjusting column 201 is rotationally connected in the connecting hole. The periphery of adjusting the post 201 upper end is through welding or interference fit fixedly connected with adjustment disc 202, and the terminal surface has seted up spanner notch 203 down, and spanner notch 203 is regular hexagon hole, is convenient for rotate adjustment post 201 through the hexagon socket head cap spanner. The upper surface of the adjusting disc 202 is fixedly connected with an end face gear ring 204, and the end face gear ring 204 is meshed with the driven wheel 106 and is used for synchronously driving the screw 105 to rotate through the adjusting disc 202.
As shown in fig. 5 and 10, the shank 3 is fitted into the shank hole 103 such that the shank 3 is movably inserted into the shank hole 103 and has one end extended out of the shank hole 103 for mounting a cutting insert. The side surface of the knife handle 3 is welded or screwed with a fixing block 301 in clearance fit with the sinking groove 104, and the fixing block 301 is provided with a threaded through hole 302 matched with the screw 105 and used for driving the knife handle 3 to move along the length direction through the rotation of the screw 105.
Further, as shown in fig. 6, 11 and 12, the guide post 4 is welded on the inner top wall of the blind hole 102; the guide pillar 4 is sleeved with a spring 401 and a guide sleeve 402, the upper end of the spring 401 abuts against the inner top wall of the blind hole 102, the lower end of the spring abuts against the upper end face of the guide sleeve 402, the guide sleeve 402 is pushed towards the lower end, the rotation of the guide sleeve 402 in the circumferential direction is limited by the guide pillar 4, if the guide pillar 4 is of a prism structure, the inner wall of the guide sleeve 402 is of a prism hole structure matched with the guide pillar 4, and the guide sleeve 402 can only move axially along the guide pillar 4. A limiting disc 403 is welded on the lower end face of the guide sleeve 402; the circumferential array of the lower surface of the limiting disc 403 is provided with limiting teeth 404.
At this time, the upper surface of the adjusting disc 202 is provided with a limiting groove 205 which is matched with the limiting teeth 404 in a one-to-one correspondence manner, and is used for limiting the rotation of the adjusting disc 202 in the circumferential direction through the limiting disc 403. Meanwhile, the wrench notch 203 penetrates through the upper end face of the adjusting column 201 and is used for pushing the limiting disc 403 upwards through the wrench notch 203 by using a wrench, so that the limiting tooth 404 is separated from the limiting groove 205, and the adjusting disc 202 is rotated by the wrench.
When the adjusting disc 202 is used, a wrench is inserted into the wrench notch 203, and the limiting disc 403 is pushed upwards, so that the limiting teeth 404 are separated from the limiting groove 205, and the limiting disc 403 loses the limitation on the circumferential rotation of the adjusting disc 202. Then, the adjusting column 201 is rotated by a wrench, the adjusting column 201 is utilized to drive the adjusting disc 202 to rotate, and the adjusting disc 202 is meshed with the driven wheel 106 through the end face gear ring 204, so that the adjusting disc 202 synchronously drives each screw 105 to rotate.
The screw 105 drives the tool shank 3 to move along the length direction through the fixing block 301 matched with the screw, so that the cutting radius of the cutting tool can be adjusted, and the cutting tool can flexibly adapt to processing of workpieces with different apertures. The investment of cutting tools with various sizes is reduced, and the overall production cost is reduced.
And the side of the knife handle 3 can be marked with scale marks for marking the actual cutting radius of the cutting tool when the knife handle 3 is at different positions, so that the position of the knife handle 3 can be quickly positioned, and the adjustment efficiency can be improved.
Example two
The difference from the first embodiment is that, as shown in fig. 6, 8 and 9, the adjusting column 201 is a hollow tubular structure, and the top column 206 is inserted into the adjusting column 201, wherein the top column 206 and the adjusting column 201 are connected by a guiding flat key, so that the top column 206 can axially move in the adjusting column 201, and the top column 206 and the adjusting column 201 can synchronously rotate in the circumferential direction.
The upper end surface of the top column 206 is welded with a limiting block 207; the lower surface of the limiting block 207 is abutted to the upper end surface of the adjusting column 201, the top column 206 is limited in position through the limiting block 207, and the top column 206 is prevented from falling from the adjusting column 201.
And, spanner notch 203 is seted up in the lower terminal surface of fore-set 206 for utilize the spanner to push away spacing dish 403 towards the upper end through fore-set 206, make spacing tooth 404 and spacing groove 205 separation, and utilize the spanner to drive through fore-set 206 and adjust synchronous the rotating of post 201, realize rotating adjustment dish 202.
During adjustment, a wrench is inserted into the wrench notch 203 on the lower end surface of the top pillar 206 and pushes the top pillar 206 upwards, so that the limiting block 207 pushes the limiting disc 403, and the limiting teeth 404 are separated from the limiting groove 205.
At this time, the top post 206 is rotated by the wrench, the adjusting post 201 is synchronously driven to rotate by the top post 206, so that the adjusting disc 202 is driven to rotate, the adjusting disc 202 drives the screw 105 to rotate, and the position of the knife handle 3 is adjusted.
Further, adjust post 201 up end and be less than the upper surface of adjustment disk 202, and adjustment disk 202 sets up the through-hole with the concentric setting of adjustment post 201 for form the shoulder hole structure between the through-hole of adjustment disk 202 and adjustment post 201, and stopper 207 is located the through-hole, and the through-hole upper surface is not high with the upper surface of adjustment disk 202, makes stopper 207 accomodate in the through-hole completely, thereby is favorable to improving overall structure's compactness, reduces holistic volume.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, as shown in fig. 4, 5 and 7, the compression spring 107 is sleeved on the screw 105, one end of the compression spring 107 abuts against the inner side wall of the sinking groove 104, the other end of the compression spring abuts against the side surface of the fixed block 301, and the fixed block 301 is extruded by the compression spring 107, so that the threaded through hole 302 of the fixed block 301 is matched with the screw 105 more tightly, the clearance is eliminated favorably, and the position adjustment accuracy of the tool holder 3 is improved.
Simultaneously, screw hole 108 with handle of a knife hole 103 intercommunication is seted up to blade disc 1 upper surface for connect holding screw through screw hole 108, realize fixing handle of a knife 3, handle of a knife 3 adjusts the back that finishes, and accessible holding screw carries out the rigidity to handle of a knife 3, further improvement handle of a knife 3 rigidity's stability and reliability.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (8)

1. An adjustable rotary cutting tool, comprising:
the cutter head (1), the lower surface of the cutter head (1) is provided with a threaded hole (101), and the inner top surface of the threaded hole (101) is provided with a blind hole (102); the circumferential surface of the cutter head (1) is uniformly provided with cutter handle holes (103);
a sunken notch (104) is formed in one inner side wall of the cutter handle hole (103); a screw (105) is rotationally connected in the sinking groove opening (104); one end of the screw rod (105) is fixedly connected with a rotating shaft, and one end of the rotating shaft extends into the blind hole (102) and is fixedly connected with a driven wheel (106);
the threaded column (2), the threaded column (2) is matched with the threaded hole (101); a connecting hole is formed in the center of the threaded column (2), and an adjusting column (201) is rotationally connected in the connecting hole; the circumferential surface of the upper end of the adjusting column (201) is fixedly connected with an adjusting disc (202), and the lower end surface is provided with a wrench notch (203);
the upper surface of the adjusting disc (202) is fixedly connected with an end face gear ring (204), and the end face gear ring (204) is meshed with the driven wheel (106) and is used for synchronously driving the screw rod (105) to rotate through the adjusting disc (202);
the tool holder (3) is matched with the tool holder hole (103), and one end of the tool holder (3) extends out of the tool holder hole (103) and is used for mounting a cutting blade; the side face of the knife handle (3) is fixedly connected with a fixing block (301) in clearance fit with the sunken groove opening (104), and the fixing block (301) is provided with a threaded through hole (302) matched with the screw rod (105) and used for driving the knife handle (3) to move along the length direction through the rotation of the screw rod (105);
wherein the inner top wall of the blind hole (102) is fixedly connected with a guide post (4); the guide post (4) is sleeved with a spring (401) and a guide sleeve (402); the upper end of the spring (401) abuts against the inner top wall of the blind hole (102), the lower end of the spring abuts against the upper end face of the guide sleeve (402), and the spring is used for pushing the guide sleeve (402) towards the lower end and limiting the guide sleeve (402) to rotate in the circumferential direction through the guide post (4);
the lower end face of the guide sleeve (402) is fixedly connected with a limiting disc (403); the lower surface of the limiting disc (403) is circumferentially provided with limiting teeth (404) in an array manner; the upper surface of the adjusting disc (202) is provided with limiting grooves (205) which are in one-to-one corresponding fit with the limiting teeth (404) and used for limiting the rotation of the adjusting disc (202) in the circumferential direction through the limiting disc (403).
2. The adjustable rotary cutting tool according to claim 1, wherein the wrench notch (203) penetrates through the upper end surface of the adjusting column (201) for pushing the limiting disc (403) upwards through the wrench notch (203) by a wrench, so that the limiting teeth (404) are separated from the limiting groove (205), and the adjusting disc (202) is rotated by the wrench.
3. The adjustable rotary cutting tool according to claim 1, wherein the adjustment column (201) is a hollow tubular structure with a top column (206) inserted therein; the upper end surface of the top column (206) is fixedly connected with a limiting block (207); the lower surface of the limiting block (207) is abutted against the upper end surface of the adjusting column (201);
the lower terminal surface of fore-set (206) is seted up in spanner notch (203) for utilize the spanner to push away spacing dish (403) through fore-set (206) upper end top for spacing tooth (404) and spacing groove (205) separation, and utilize the spanner to drive through fore-set (206) and adjust synchronous the rotation of post (201), realize rotating adjustment dish (202).
4. The adjustable rotary cutting tool according to claim 1, 2 or 3, characterized in that the guide post (4) is of a prismatic structure and the inner wall of the guide sleeve (402) is of a prismatic hole structure adapted to the guide post (4).
5. The adjustable rotary cutting tool according to claim 3, wherein the top post (206) is connected to the adjustment post (201) by a guided flat key.
6. The adjustable rotary cutting tool according to claim 3 or 5, wherein the upper end surface of the adjusting column (201) is lower than the upper surface of the adjusting disc (202), and the adjusting disc (202) is provided with a through hole concentrically arranged with the adjusting column (201); the limiting block (207) is positioned in the through hole, and the upper surface of the through hole is not higher than the upper surface of the adjusting disc (202).
7. The adjustable rotary cutting tool according to claim 1, wherein the screw (105) is sleeved with a compression spring (107), and one end of the compression spring (107) abuts against the inner side wall of the countersunk groove opening (104) and the other end abuts against the side surface of the fixed block (301).
8. The adjustable rotary cutting tool as claimed in claim 1 or 7, wherein the upper surface of the cutter head (1) is provided with a screw hole (108) communicated with the cutter handle hole (103) for connecting a set screw through the screw hole (108) to fix the cutter handle (3).
CN202111400457.8A 2021-11-24 2021-11-24 Adjustable rotary cutting tool Active CN114101726B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116000598B (en) * 2022-12-29 2023-10-24 无锡精瑞机械制造有限公司 High-efficient pneumatic lifting steel bottle valve handling equipment
CN116160030B (en) * 2023-04-23 2023-07-14 强胜精密机械(苏州)有限公司 Rotary cutting tool

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GB602860A (en) * 1945-10-17 1948-06-03 English Steel Corp Ltd Improvements in or relating to adjustable reamers and boring tools
CN102069202A (en) * 2010-12-30 2011-05-25 宁波鸿达电机模具有限公司 Large-pore diameter precision boring tool for machining center
CN110899798A (en) * 2019-12-31 2020-03-24 江苏悍狮霸智能科技有限公司 Adjustable assembled disc milling cutter
CN211072854U (en) * 2019-12-03 2020-07-24 深圳市金盛达源科技有限公司 Novel automatic cutting compensation device for multi-axis linkage machining center
CN112893950A (en) * 2019-11-19 2021-06-04 常州钧焯工具有限公司 Adjustable disc surface milling cutter
CN112959090A (en) * 2021-01-05 2021-06-15 邹洪波 Novel cutter head
CN113441742A (en) * 2021-08-31 2021-09-28 江苏刘一刀精密机械有限公司 Inner hole boring cutter adjusting seat

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Publication number Priority date Publication date Assignee Title
GB602860A (en) * 1945-10-17 1948-06-03 English Steel Corp Ltd Improvements in or relating to adjustable reamers and boring tools
CN102069202A (en) * 2010-12-30 2011-05-25 宁波鸿达电机模具有限公司 Large-pore diameter precision boring tool for machining center
CN112893950A (en) * 2019-11-19 2021-06-04 常州钧焯工具有限公司 Adjustable disc surface milling cutter
CN211072854U (en) * 2019-12-03 2020-07-24 深圳市金盛达源科技有限公司 Novel automatic cutting compensation device for multi-axis linkage machining center
CN110899798A (en) * 2019-12-31 2020-03-24 江苏悍狮霸智能科技有限公司 Adjustable assembled disc milling cutter
CN112959090A (en) * 2021-01-05 2021-06-15 邹洪波 Novel cutter head
CN113441742A (en) * 2021-08-31 2021-09-28 江苏刘一刀精密机械有限公司 Inner hole boring cutter adjusting seat

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