CN109454264B - Duplex long taper hole machining device and machining method - Google Patents
Duplex long taper hole machining device and machining method Download PDFInfo
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- CN109454264B CN109454264B CN201811405648.1A CN201811405648A CN109454264B CN 109454264 B CN109454264 B CN 109454264B CN 201811405648 A CN201811405648 A CN 201811405648A CN 109454264 B CN109454264 B CN 109454264B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B43/00—Boring or drilling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool
- B23B43/02—Boring or drilling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool to the tailstock of a lathe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
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Abstract
The invention discloses a duplex long taper hole processing device and a processing method in the technical field of taper hole processing, and the duplex long taper hole processing device comprises a machine tool base, a first boring rod and a second boring rod, wherein a bearing seat is fixedly arranged on the upper side of the machine tool base, the first boring rod and the second boring rod are both conical, the thick end of the first boring rod and the thick end of the second boring rod are respectively and rotatably connected onto the bearing seat, a moving platform is slidably arranged on the machine tool base, a clamp used for clamping a workpiece to be processed is arranged on the upper side of the moving platform, and the first boring rod and the second boring rod are respectively inclined towards the direction of the center of the workpiece to be processed in the front-back direction; the invention realizes that the common lathe can process the duplex long taper hole at one time, and has high efficiency and high precision.
Description
Technical Field
The invention belongs to the technical field of taper hole machining, and particularly relates to a duplex long taper hole machining device and a duplex long taper hole machining method.
Background
At present, a common duplex taper hole machining method uses a numerical control machine tool for machining, machining tools such as a drill bit, a reamer and a reamer are arranged in a tailstock of the numerical control machine tool, the hole machining method cannot achieve uniform automatic feed, and the machining precision and the reaming size cannot be precisely controlled. In addition, the machining of the long taper hole of the large-sized fitting is difficult for a common numerical control machine tool. In the machining industry of China, an effective device and method for machining the duplex long taper holes by using a common lathe are not found.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem that a common lathe cannot be used for machining the duplex long taper hole in the prior art, and provides a duplex long taper hole machining device and a machining method.
The purpose of the invention is realized as follows: a duplex long taper hole machining device and a machining method comprise a machine tool base, a first boring rod and a second boring rod, wherein a bearing seat is fixedly arranged on the upper side of the machine tool base, the first boring rod and the second boring rod are both conical, the thick end of the first boring rod and the thick end of the second boring rod are respectively and rotatably connected onto the bearing seat, a moving platform is slidably arranged on the machine tool base, a clamp used for clamping a workpiece to be machined is arranged on the upper side of the moving platform, and the first boring rod and the second boring rod are respectively inclined towards the direction of the center of the workpiece to be machined in the front-back direction.
In order to further reduce the cutting force of the single-layer blade during cutting, the structure of the first boring bar and the second boring bar is the same, at least one group of tangent cutter sets is arranged on the periphery of the first boring bar, each positive cutter set comprises a first positive long blade, a second positive long blade and a third positive long blade, and a plurality of trapezoidal cutter teeth are respectively arranged on the upper parts of the first positive long blade and the second positive long blade; at least one reverse cutting tool set is distributed on the periphery of the second boring bar, the reverse cutting tool set comprises a first reverse long blade, a second reverse long blade and a third reverse long blade, the first reverse long blade and the first forward long blade are identical in structure, the second reverse long blade and the second forward long blade are identical in structure, and the third reverse long blade and the third forward long blade are identical in structure; in the design, through the design of the combined multilayer blade, the cutting force of the single-layer blade during cutting is reduced, and the cutting stability is improved; the installation positions of the reverse cutting knife group and the positive cutting knife group are distributed in a staggered manner; the design avoids collision when the positive cutting knife group and the negative cutting knife group rotate to cut.
As a further improvement of the invention, in the axial direction, the trapezoidal cutter teeth on the first regular long blade and the trapezoidal cutter teeth on the second regular long blade are arranged in a staggered manner, and the trapezoidal cutter teeth on the first inverse long blade and the trapezoidal cutter teeth on the second inverse long blade are arranged in a staggered manner; the positive cutting tool bit I, the positive cutting tool bit II and the positive cutting tool bit III are used for boring a workpiece to be machined in sequence, and the reverse cutting tool bit I, the reverse cutting tool bit II and the reverse cutting tool bit III are used for boring the workpiece to be machined in sequence; in the design, the trapezoidal cutter teeth on the first positive long blade and the trapezoidal cutter teeth on the second positive long blade are arranged in a staggered mode to make up for the axial gap between the first positive long blade and the second positive long blade, the trapezoidal cutter teeth on the second positive long blade cut the positions, which are not cut, of the trapezoidal cutter teeth on the first positive long blade, and the third positive long blade adopts the long optical tooth blade to improve the cutting finish.
In order to further facilitate the assembly and disassembly of the positive cutting knife group and the negative cutting knife group, the periphery of the boring bar I is provided with an installation groove and a pressing block groove, the positive cutting knife group is installed on the boring bar I through the installation groove, the boring bar is connected with a pressing block which presses the positive cutting knife group on the boring bar I through the pressing block groove, the bottom side of the pressing block groove is higher than the top side of the installation groove, and the top side of the pressing block is lower than the positive cutting knife head III; in the design, a first positive long blade, a second positive long blade and a third positive long blade are sequentially and respectively placed in the mounting groove, the first positive long blade, the second positive long blade and the third positive long blade are just placed in the mounting groove, and after a pressing block is tightly pressed on the third positive long blade, the pressing block is connected with a first boring bar through a pressing block groove; when the blade needs to be replaced, only the pressing block needs to be detached, and the corresponding blade needs to be replaced; the dismounting method of the reverse cutting knife group on the boring bar II is the same as that of the forward cutting knife group on the boring bar I, and the details are not repeated.
In order to realize the rotation of the first boring rod and the second boring rod, a driving device is fixedly connected to the outer side of the machine tool base and drives the first boring rod to rotate, a driving gear is connected to the first boring rod in the bearing base, a driven gear is connected to the second boring rod, the driving gear is meshed with the driven gear, and the driving gear and the driven gear are the same in size.
In order to further improve the reliability of the mounting structure of the first boring bar and the second boring bar, the first boring bar is supported by bearings arranged at two ends of a bearing seat respectively, the second boring bar is supported by bearings arranged at two ends of the bearing seat respectively, bearing end covers are arranged on two outward sides of the bearing seat respectively, one side of each bearing end cover is abutted against the corresponding bearing, and the other side of each bearing end cover is fixedly connected with the corresponding bearing seat.
In order to further press from both sides tight work piece of treating to process, anchor clamps include preceding anchor clamps and back anchor clamps, preceding anchor clamps are the same with the structure of back anchor clamps, and preceding anchor clamps include grip slipper and last grip slipper down, go up grip slipper detachably and connect under on the grip slipper, the grip slipper links firmly on moving platform down, on length direction, preceding anchor clamps are used for pressing from both sides the tight one end of treating to process the work piece, and back anchor clamps are used for pressing from both sides the tight other end of treating to process the work piece.
The method for processing the duplex long taper hole by using the duplex long taper hole processing device comprises the following steps:
(1) placing one end of a workpiece on a lower clamping seat of a front clamp, placing the other end of the workpiece on a lower clamping seat of a rear clamp, placing an upper clamping seat on the top side of the workpiece, aligning fastening holes in the upper clamping seat and the lower clamping seat, and clamping the workpiece between the upper clamping seat and the lower clamping seat by using a fastening bolt to penetrate through the fastening hole;
(2) controlling the moving platform to move, so that the first boring rod and the second boring rod extend into the workpiece, and controlling the moving platform to stop when the distance extending into the workpiece is a set distance;
(3) controlling a driving device to start to act, controlling a moving platform to move towards the direction of a bearing seat, enabling a first boring rod and a second boring rod to rotate, when a workpiece is in contact with a tangent cutting knife group and a reverse cutting knife group, simultaneously boring the workpiece by the first boring rod and the second boring rod, when the depth of a bored hole reaches a set depth, controlling the moving platform to stop moving, waiting for 1-3s, controlling the moving platform to move reversely, controlling the driving device to stop acting, and when the moving platform returns to the position before boring, finishing boring; otherwise, the mobile platform is controlled to continuously move towards the direction of the bearing seat.
Compared with the prior art, the double-linkage long taper hole forming machine has the following technical effects that the first boring rod and the second boring rod are obliquely arranged, the first boring rod and the second boring rod are reliably clamped on the machine tool base, the first boring rod and the second boring rod synchronously rotate, the moving platform drives the axial feed motion of a workpiece to be processed, one-step forming of a double-linkage long taper hole is realized, the efficiency is high, and the processing precision is high; the cutting blade adopts three layers of long blades, so that the cutting force of the single-layer long blade during cutting is reduced, and the last layer of long blade adopts a long serrated blade for cutting, so that the smoothness of the long taper hole is further improved; the method can be applied to the work of processing the duplex long taper hole.
Drawings
Fig. 1 is a front view of the present invention.
FIG. 2 is a schematic structural diagram showing the positional relationship between the first boring bar and the second boring bar when cutting a workpiece according to the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a top view of the present invention.
Fig. 5 is a partially enlarged view of B in fig. 4.
The automatic cutting machine comprises a machine tool base 1, a rotary screw rod 2, a driving device 3, a bearing seat 4, a boring bar I5, a clamp 6, a clamp 601 front clamp, a clamp 601a upper clamp seat, a clamp 601b lower clamp seat, a clamp 602 rear clamp, a workpiece 7, a moving platform 8, a sliding seat 9, a tangent cutting knife group 10, a positive blade I1001, a positive blade II 1002, a positive blade III 1003, a negative cutting knife group 11, a negative blade III 1101, a negative blade II 1102, a negative blade I1103, a pressing block 12, a pressing block groove 13, a mounting groove 14, a bearing 15, a bearing end cover 16, a driving gear 17, a driven gear 18, a boring bar II 19 and a motor 20.
Detailed Description
The invention will be further explained with reference to the drawings.
The device and the method for processing the duplex long taper hole as shown in figures 1 to 5 comprise a machine tool base 1, the upper side of the machine tool base 1 is fixedly provided with a bearing seat 44, the first boring bar 5 and the second boring bar 19 are both conical, the thick end of the first boring bar 5 and one end of the second boring bar 19 are respectively and rotatably connected to the bearing seat 44, the thick ends of the first boring bar 5 and the second boring bar 19 are thick ends, and the structure for realizing the rotation of the first boring bar 5 and the second boring bar 19 is specifically that the outer side of the machine tool base 1 is fixedly connected with a driving device 3, the driving device 3 drives the first boring bar 5 to rotate, the first boring bar 5 in the bearing seat 44 is connected with a driving gear 17, the second boring bar 19 is connected with a driven gear 18, the driving gear 17 is meshed with the driven gear 18, the driving gear 17 and the driven gear 18 are the same in size, and the driving gear 17 and the driven gear 18 are conical gears; the driving device 3 is a hydraulic motor or a driving motor 20; the boring bar I5 is supported by one bearing 15 respectively arranged at two ends of a bearing seat 44, the boring bar II 19 is supported by one bearing 15 respectively arranged at two ends of the bearing seat 44, bearing end covers 16 are respectively arranged at two outward sides of the bearing seat 44, one side of each bearing end cover 16 is abutted against the corresponding bearing 15, and the other side of each bearing end cover 16 is fixedly connected with the corresponding bearing seat 44; the upper side of the machine tool base 1 is provided with a guide rail, the movable platform 8 slides along the guide rail, the outer side of the movable platform 8 is fixedly connected with a sliding base 9, the outer side of the machine tool base 1 is provided with a motor 20, a rotating lead screw 2 is connected to the motor 20 in a transmission manner, the rotating lead screw 2 is in threaded fit with the sliding base 9, the rotating lead screw 2 drives the sliding base 9 to move when rotating, and the sliding base 9 drives the movable platform 8 to slide along the guide rail; the upper side of the moving platform 8 is provided with a clamp 6 for clamping a workpiece 7 to be machined, the clamp 6 comprises a front clamp 601 and a rear clamp 602, the front clamp 601 and the rear clamp 602 are identical in structure, the front clamp 601 comprises a lower clamping seat 601b and an upper clamping seat 601a, the upper clamping seat 601a is detachably connected to the lower clamping seat 601b, the lower clamping seat 601b is fixedly connected to the moving platform 8, in the length direction, the front clamp 601 is used for clamping one end of the workpiece 7 to be machined, and the rear clamp 602 is used for clamping the other end of the workpiece 7 to be machined; the first boring bar 5 and the second boring bar 19 are respectively inclined towards the direction of the center of the workpiece 7 to be processed in the front-back direction, and the central axes of the first boring bar 5 and the second boring bar 19 are intersected.
In order to further reduce the cutting force of the single-layer blade during cutting, the structure of the first boring bar 5 is the same as that of the second boring bar 19, at least one group of positive cutting tool set 10 is arranged on the periphery of the other end of the first boring bar 5, each positive cutting tool set 10 comprises a first positive long blade 1001, a second positive long blade 1002 and a third positive long blade 1003, and a plurality of trapezoidal cutter teeth are respectively arranged on the upper parts of the first positive long blade 1001 and the second positive long blade 1002; at least one reverse cutting knife group 11 is arranged on the periphery of the other end of the second boring bar 19, the reverse cutting knife group 11 comprises a first reverse long blade 1103, a second reverse long blade 1102 and a third reverse long blade 1101, the first reverse long blade 1103 and the first forward long blade 1001 are identical in structure, the second reverse long blade 1102 and the second forward long blade 1002 are identical in structure, and the third reverse long blade 1101 and the third forward long blade 1003 are identical in structure; the installation positions of the reverse cutting knife group 11 and the positive cutting knife group 10 are distributed in a staggered way; in the axial direction, the trapezoidal cutter teeth on the first positive long blade 1001 and the trapezoidal cutter teeth on the second positive long blade 1002 are arranged in a staggered manner, and the trapezoidal cutter teeth on the first negative long blade 1103 and the trapezoidal cutter teeth on the second negative long blade 1102 are arranged in a staggered manner; the machining method comprises the following steps that a first positive cutting tool bit, a second positive cutting tool bit and a third positive cutting tool bit are used for boring a workpiece 7 to be machined in sequence, a first reverse cutting tool bit, a second reverse cutting tool bit and a third reverse cutting tool bit are used for boring the workpiece 7 to be machined in sequence, and the other ends of a first boring rod 5 and a second boring rod 19 are thin ends; in order to further facilitate the assembly and disassembly of the positive cutting knife group 10 and the reverse cutting knife group 11, an installation groove 14 and a briquetting groove 13 are formed in the periphery of the boring rod I5, the positive cutting knife group 10 is installed on the boring rod I5 through the installation groove 14, the boring rod I5 is connected with a briquetting 12 which compresses the positive cutting knife group 10 on the boring rod I5 through the briquetting groove 13, the bottom side of the briquetting groove 13 is higher than the top side of the installation groove 14, and the top side of the briquetting 12 is lower than the positive cutting knife head III; the positive cutting tool set 10 and the pressing block 12 are installed in a mode that a first positive long blade 1001, a second positive long blade 1002 and a third positive long blade 1003 are sequentially placed in the installation groove 14 respectively, the first positive long blade 1001, the second positive long blade 1002 and the third positive long blade 1003 are just placed in the installation groove 14, and after the pressing block 12 is pressed on the third positive long blade 1003, the pressing block 12 and the first boring rod 5 are connected together through a pressing screw; when the blade needs to be replaced, only the compression screw needs to be loosened, the pressing block 12 is detached, and the corresponding blade is replaced; the dismounting method of the reverse cutting knife group 11 on the second boring bar 19 is the same as that of the tangential cutting knife group 10 on the first boring bar 5, and is not described again; the inclination angle of the bus of the processing hole formed in the workpiece 7 to be processed is smaller than that of the bus of the first boring bar 5, when the outer side of the first boring bar 5 abuts against the inner wall of the workpiece 7, the first boring bar 5 and the second boring bar 19 are clamped, and the stability in boring is improved.
The method for processing the duplex long taper hole by using the duplex long taper hole processing device comprises the following steps:
(1) placing one end of the workpiece 7 on the lower holder 601b of the front jig 601, the other end of the workpiece 7 on the lower holder 601b of the rear jig 602, placing the upper holder 601a on the top side of the workpiece 7 so that the fastening holes on the upper holder 601a and the lower holder 601b are aligned, and clamping the workpiece 7 between the upper holder 601a and the lower holder 601b through the fastening holes using fastening bolts;
(2) controlling the moving platform 8 to move, so that the first boring bar 5 and the second boring bar 19 extend into the workpiece 7, and controlling the moving platform 8 to stop when the distance extending into the workpiece 7 is a set distance;
(3) controlling the driving device 3 to start to act, controlling the moving platform 8 to move towards the direction of the bearing seat 44, enabling the first boring rod 5 and the second boring rod 19 to rotate, when the workpiece 7 is in contact with the forward cutting tool set 10 and the backward cutting tool set 11, simultaneously boring the workpiece 7 by the first boring rod 5 and the second boring rod 19, when the boring depth reaches a set depth, controlling the moving platform 8 to stop moving, waiting for 1-3s, controlling the moving platform 8 to move reversely, controlling the driving device 3 to stop acting, and when the moving platform 8 returns to the position before boring, finishing boring; otherwise, controlling the mobile platform 8 to continue moving towards the bearing seat 44;
in the step (2), when the first boring bar 5 and the second boring bar 19 are about to contact the inner wall of the workpiece 7 (the gap between the outer side of the first boring bar 5 or the second boring bar 19 and the inner wall of the workpiece 7 is 0-1 cm), the moving platform 8 is controlled to stop.
Compared with the prior art, the double-linkage long taper hole forming machine has the following technical effects that the first boring rod 5 and the second boring rod 19 are obliquely arranged, the first boring rod 5 and the second boring rod 19 are reliably clamped on the machine tool base 1, the first boring rod 5 and the second boring rod 19 synchronously rotate, the moving platform 8 drives the axial feeding motion of a workpiece 7 to be processed, one-step forming of a double-linkage long taper hole is realized, the efficiency is high, and the processing precision is high; the cutting blade adopts three layers of long blades, so that the cutting force of the single-layer long blade during cutting is reduced, and the last layer of long blade adopts a long serrated blade for cutting, so that the smoothness of the long taper hole is further improved; the method can be applied to the work of processing the duplex long taper hole.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts based on the disclosed technical solutions, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (7)
1. A duplex long taper hole machining device is characterized by comprising a machine tool base, a first boring rod and a second boring rod, wherein a bearing seat is fixedly arranged on the upper side of the machine tool base, the first boring rod and the second boring rod are both conical, the thick end of the first boring rod and the thick end of the second boring rod are respectively and rotatably connected onto the bearing seat, a moving platform is slidably arranged on the machine tool base, a clamp used for clamping a workpiece to be machined is arranged on the upper side of the moving platform, and the first boring rod and the second boring rod are respectively inclined towards the direction of the center of the workpiece to be machined in the front-back direction; the structure of the first boring bar and the second boring bar are the same, at least one group of tangent cutting tool sets is distributed on the periphery of the first boring bar, each tangent cutting tool set comprises a first positive long blade, a second positive long blade and a third positive long blade, and a plurality of trapezoidal cutter teeth are respectively distributed on the upper parts of the first positive long blade and the second positive long blade; at least one reverse cutting tool set is distributed on the periphery of the second boring bar, the reverse cutting tool set comprises a first reverse long blade, a second reverse long blade and a third reverse long blade, the first reverse long blade and the first forward long blade are identical in structure, the second reverse long blade and the second forward long blade are identical in structure, and the third reverse long blade and the third forward long blade are identical in structure; the installation positions of the reverse cutting knife group and the positive cutting knife group are distributed in a staggered manner.
2. A duplex long taper hole processing device according to claim 1, wherein in the axial direction, the trapezoidal cutter teeth on the first regular blade and the trapezoidal cutter teeth on the second regular blade are arranged in a staggered manner, and the trapezoidal cutter teeth on the first inverse long blade and the trapezoidal cutter teeth on the second inverse long blade are arranged in a staggered manner; the first positive long blade, the second positive long blade and the third positive long blade are used for boring a workpiece to be machined in sequence, and the first reverse long blade, the second reverse long blade and the third reverse long blade are used for boring the workpiece to be machined in sequence.
3. A duplex long taper hole processing device according to claim 1 or 2, wherein the boring bar i is provided at its periphery with an installation groove and a pressing block groove, the positive cutting tool set is installed on the boring bar i via the installation groove, the boring bar is connected via the pressing block groove with a pressing block for pressing the positive cutting tool set on the boring bar i, the pressing block groove is higher at its bottom side than the top side of the installation groove, and the pressing block is lower at its top side than the positive long blade three.
4. A duplex long taper hole processing device according to claim 1, wherein a driving device is fixedly connected to an outer side of the machine tool base, the driving device drives a first boring bar to rotate, a driving gear is connected to the first boring bar in the bearing base, a driven gear is connected to the second boring bar, the driving gear is meshed with the driven gear, and the driving gear and the driven gear are the same in size.
5. A duplex long taper hole processing device according to claim 1, 2 or 4, wherein the first boring bar is supported by a bearing respectively arranged at two ends of the bearing seat, the second boring bar is supported by a bearing respectively arranged at two ends of the bearing seat, bearing end covers are respectively arranged at two outward sides of the bearing seat, one side of each bearing end cover abuts against the bearing, and the other side of each bearing end cover is fixedly connected with the bearing seat.
6. A duplex long taper hole processing device according to claim 1, wherein said fixture comprises a front fixture and a rear fixture, said front fixture and said rear fixture are identical in structure, said front fixture comprises a lower holder and an upper holder, said upper holder is detachably connected to said lower holder, said lower holder is fixedly connected to said movable platform, said front fixture is used for clamping one end of the workpiece to be processed, and said rear fixture is used for clamping the other end of the workpiece to be processed.
7. The method for processing the duplex long taper hole by using the duplex long taper hole processing device of claim 4, comprising the steps of:
(1) placing one end of a workpiece on a lower clamping seat of a front clamp, placing the other end of the workpiece on a lower clamping seat of a rear clamp, placing an upper clamping seat on the top side of the workpiece, aligning fastening holes in the upper clamping seat and the lower clamping seat, and clamping the workpiece between the upper clamping seat and the lower clamping seat by using a fastening bolt to penetrate through the fastening hole;
(2) controlling the moving platform to move, so that the first boring rod and the second boring rod extend into the workpiece, and controlling the moving platform to stop when the distance extending into the workpiece is a set distance;
(3) controlling a driving device to start to act, controlling a moving platform to move towards the direction of a bearing seat, enabling a first boring rod and a second boring rod to rotate, when a workpiece is in contact with a tangent cutting knife group and a reverse cutting knife group, simultaneously boring the workpiece by the first boring rod and the second boring rod, when the depth of a bored hole reaches a set depth, controlling the moving platform to stop moving, waiting for 1-3s, controlling the moving platform to move reversely, controlling the driving device to stop acting, and when the moving platform returns to the position before boring, finishing boring; otherwise, the mobile platform is controlled to continuously move towards the direction of the bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811405648.1A CN109454264B (en) | 2018-11-23 | 2018-11-23 | Duplex long taper hole machining device and machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811405648.1A CN109454264B (en) | 2018-11-23 | 2018-11-23 | Duplex long taper hole machining device and machining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109454264A CN109454264A (en) | 2019-03-12 |
| CN109454264B true CN109454264B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811405648.1A Expired - Fee Related CN109454264B (en) | 2018-11-23 | 2018-11-23 | Duplex long taper hole machining device and machining method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4197645A (en) * | 1976-07-06 | 1980-04-15 | Scheicher Hans M F | Drill head and bone drill |
| CN2152623Y (en) * | 1993-04-17 | 1994-01-12 | 大连市声光机电实业总公司 | Deep taper hole boring machine |
| CN203751376U (en) * | 2013-11-07 | 2014-08-06 | 广州市特耐得车轴有限公司 | Axial boring machine for vehicle axle |
| CN204584283U (en) * | 2015-04-09 | 2015-08-26 | 广东石油化工学院 | One back-shaped slot device of turning 8-shaped on inner cylinder face |
| CN105252040A (en) * | 2015-11-18 | 2016-01-20 | 中船黄埔文冲船舶有限公司 | Conical bore boring device |
-
2018
- 2018-11-23 CN CN201811405648.1A patent/CN109454264B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4197645A (en) * | 1976-07-06 | 1980-04-15 | Scheicher Hans M F | Drill head and bone drill |
| CN2152623Y (en) * | 1993-04-17 | 1994-01-12 | 大连市声光机电实业总公司 | Deep taper hole boring machine |
| CN203751376U (en) * | 2013-11-07 | 2014-08-06 | 广州市特耐得车轴有限公司 | Axial boring machine for vehicle axle |
| CN204584283U (en) * | 2015-04-09 | 2015-08-26 | 广东石油化工学院 | One back-shaped slot device of turning 8-shaped on inner cylinder face |
| CN105252040A (en) * | 2015-11-18 | 2016-01-20 | 中船黄埔文冲船舶有限公司 | Conical bore boring device |
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| Publication number | Publication date |
|---|---|
| CN109454264A (en) | 2019-03-12 |
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