CN112355591A - Boring cutter for machining valve seat ring and guide pipe hole and machining method of boring cutter - Google Patents
Boring cutter for machining valve seat ring and guide pipe hole and machining method of boring cutter Download PDFInfo
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- CN112355591A CN112355591A CN202011182133.7A CN202011182133A CN112355591A CN 112355591 A CN112355591 A CN 112355591A CN 202011182133 A CN202011182133 A CN 202011182133A CN 112355591 A CN112355591 A CN 112355591A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/30—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools lathes or like tools
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- 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
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Abstract
The invention belongs to the technical field of valve seat ring and conduit hole processing, in particular to a boring cutter for processing a valve seat ring and a conduit hole, which comprises a rough processing boring cutter and a finish processing boring cutter; the rough machining boring cutter comprises a first cutter body, wherein a first conical surface blade, a second conical surface rough machining blade and a third conical surface blade are circumferentially and equidistantly arranged on the first cutter body, a cutting end of the first cutter body is coaxially and circumferentially fixedly connected with a guide pipe hole rough machining boring cutter, and the length of the guide pipe hole rough machining boring cutter is 5-10 cm; the fine machining boring cutter comprises a second cutter body, a second conical surface fine machining blade is circumferentially arranged on the second cutter body, a guide pipe hole fine machining boring cutter is coaxially and circumferentially and fixedly connected with a cutting end of the second cutter body, and the length of the guide pipe hole fine machining boring cutter is larger than the hole depth of the guide pipe hole. The invention provides a boring cutter for machining a valve seat ring and a guide pipe hole, which improves the machining precision of concentricity of a sealing conical surface of the valve seat ring and the guide pipe hole of a valve.
Description
Technical Field
The invention belongs to the technical field of valve seat ring and conduit hole processing, and particularly relates to a boring cutter for processing a valve seat ring and a conduit hole and a processing method thereof.
Background
The cylinder cover is one of main parts of an engine, the machining precision of the cylinder cover has great influence on the performance of the engine, and particularly, the machining precision of a valve seat ring and a guide pipe hole on the cylinder cover directly influences the power and exhaust emission indexes of the engine.
The position of the valve seat ring is positioned at the orifice part of the guide pipe hole, the valve seat ring and the guide pipe hole are processed by two processing tools respectively at present, and the sealing conical surface processing tool of the valve seat ring consists of a cutter bar with a guide pillar, a conical surface reamer, a key and a nut.
When the valve seat ring and the guide pipe hole are machined in the prior art, the guide pipe hole is machined firstly, after the machining is finished, the sealing conical surface machining tool of the valve seat ring uses the guide pipe hole as a guide to machine the sealing conical surface of the valve seat ring on the guide pipe hole, when the machining is carried out, firstly, the cutter bar guide pillar on the sealing conical surface machining tool of the valve seat ring is in clearance fit with the guide pipe hole of the valve seat ring, and a machine tool spindle drives the cutter bar to rotate integrally to carry out reaming and finish machining on the sealing conical surface.
The concentricity error between the machining tool and the machined workpiece and the concentricity error between the machine tool spindle and the valve guide pipe hole for positioning cause the machining error to be increased; in addition, the conical reamer of the sealing conical surface processing tool is a common conical reamer, the common cutting edge is a cutting edge area of 0.05 mm, and the cutting resistance is relatively high due to the linear contact of the conical surface during cutting, so that the common conical reamer often has a cutter relieving phenomenon, the cutting processing can not correct the defect of the eccentricity deviation left by the rough processing procedure, and the concentricity requirement of the sealing conical surface and the valve guide pipe hole is difficult to achieve.
Therefore, manual grinding is generally carried out after machining, which is labor-consuming and time-consuming, and meanwhile, a large non-concentricity error value cannot be corrected, so that a workpiece is scrapped, and therefore, the machining precision of the concentricity of the valve seat ring sealing conical surface and the valve guide pipe hole is improved, which is a technical problem which is eagerly solved by the mechanical industry.
Disclosure of Invention
The invention aims to provide a boring cutter for machining a valve seat ring and a guide pipe hole and a machining method thereof, and the machining precision of concentricity of a sealing conical surface of the valve seat ring and the guide pipe hole of the valve is improved.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a boring cutter for processing valve seat rings and conduit holes comprises a rough processing boring cutter and a finish processing boring cutter;
the rough machining boring cutter comprises a first cutter body, wherein a first conical surface blade, a second conical surface rough machining blade and a third conical surface blade are circumferentially arranged on the first cutter body, a cutting end of the first cutter body is coaxially and circumferentially fixedly connected with a guide pipe hole rough machining boring cutter, and the length of the guide pipe hole rough machining boring cutter is 5-10 cm;
the fine machining boring tool comprises a second tool body, a second conical surface fine machining blade is circumferentially installed on the second tool body, a blade angle fine adjustment mechanism for adjusting the inclination angle of the second conical surface fine machining blade is arranged on the second tool body, a guide pipe hole fine machining boring tool is coaxially and circumferentially and fixedly connected with a cutting end of the second tool body, and the length of the guide pipe hole fine machining boring tool is larger than the hole depth of the guide pipe hole.
As a further optimized scheme, three pressing plates for pressing the first conical surface blade, the second conical surface roughing blade and the third conical surface blade are respectively mounted on the first cutter body through screws, and the pressing plate for pressing the second conical surface finishing blade is mounted on the second cutter body through screws.
As a further optimized scheme, the first cutter body is provided with three axial adjusting mechanisms for axially adjusting the axial position of the first conical surface blade, the axial position of the second conical surface rough machining blade and the axial position of the third conical surface blade respectively, and the second cutter body is provided with an axial adjusting mechanism for axially adjusting the axial position of the second conical surface finish machining blade;
the axial adjusting mechanism comprises a strip-shaped jacking block, one end of the strip-shaped jacking block is fixedly provided with a threaded sleeve, an adjusting jackscrew is screwed in the threaded sleeve, and the first cutter body and the second cutter body are respectively provided with a pressure plate by a screw to press the strip-shaped jacking block of each axial adjusting mechanism;
adjusting jackscrews of the three axial adjusting mechanisms on the first cutter body are respectively arranged on the first cutter body in a propping mode, and one ends, far away from the adjusting jackscrews, of strip-shaped jacking blocks of the three axial adjusting mechanisms on the first cutter body are respectively arranged on the end portion of the first conical surface blade, the end portion of the second conical surface rough machining blade and the end portion of the third conical surface blade in a propping mode.
The adjusting jackscrew of the axial adjusting mechanism on the second cutter body is arranged on the second cutter body in a propping mode, and one end, far away from the adjusting jackscrew, of the strip-shaped jacking block of the axial adjusting mechanism on the second cutter body is arranged at the end portion of the second conical surface fine machining blade in a propping mode.
As a further optimized scheme, the blade angle fine adjustment mechanism comprises an angle adjustment pin and an angle adjustment screw, an angle adjustment mounting hole is formed in the second cutter body, the angle adjustment pin is slidably mounted in the angle adjustment mounting hole, one end of the angle adjustment pin penetrates out of the angle adjustment mounting hole and is arranged on the side face of the second conical-face finish machining blade, the angle adjustment screw is mounted in the angle adjustment mounting hole in a threaded manner, and the angle adjustment screw is arranged at the other end of the angle adjustment pin in a jacking manner.
As a further optimized scheme, the tool shanks of the first tool body and the second tool body are both flange type tool shanks.
A machining method of a boring cutter for machining valve seat rings and guide pipe holes comprises the following steps:
firstly, roughly machining a workpiece by using the rough machining boring cutter through a machine tool, machining the depth of a conduit hole of the workpiece by using the rough machining boring cutter part of the rough machining boring cutter between 5 and 10cm according to the actual length of the rough machining boring cutter of the conduit hole on the rough machining boring cutter, simultaneously machining a first conical surface blade and a third conical surface blade on the rough machining boring cutter on the first conical surface blade and the third conical surface blade on the valve seat ring sealing conical surface of the workpiece, and leaving a margin of 0.1 to 0.2mm for a second conical surface after the second conical surface rough machining blade machines the second conical surface of the valve seat ring sealing conical surface of the workpiece;
and then, performing finish machining on the workpiece by using the finish machining boring tool through a machine tool, wherein the finish machining boring tool part of the conduit hole of the finish machining boring tool takes the conduit hole of 5-10 cm machined by the rough machining boring tool as a guide, the conduit hole finish machining boring tool completes through machining on the conduit hole of the workpiece, and meanwhile, the second conical surface finish machining blade completes finish machining on the residual allowance of the second conical surface on the sealing conical surface of the valve seat ring of the workpiece.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
by the aid of the cutter structure and the machining method, when the cutter machines the valve seat ring sealing conical surface and the guide pipe hole of the workpiece, the machining precision of the concentricity of the valve seat ring sealing conical surface and the valve guide pipe hole is improved by synchronously machining the valve seat ring sealing conical surface and the guide pipe hole of the workpiece.
Drawings
FIG. 1 is a side view of a roughing boring tool in this embodiment;
fig. 2 is a front view of the first cutter body in the present embodiment;
FIG. 3 is an exploded perspective view of the roughing boring tool of the present embodiment;
FIG. 4 is a side view of the finishing boring tool of the present embodiment;
fig. 5 is a front view of the second cutter body in the present embodiment;
FIG. 6 is an exploded perspective view of the finishing boring tool of the present embodiment;
in the attached drawing, 1-rough machining boring cutter, 2-fine machining boring cutter, 3-first cutter body, 4-first conical surface blade, 5-second conical surface rough machining blade, 6-third conical surface blade, 7-conduit hole rough machining boring cutter, 8-second cutter body, 9-second conical surface fine machining blade, 10-conduit hole fine machining boring cutter, 11-pressing plate, 12-strip-shaped ejector block, 13-screw sleeve, 14-adjusting jackscrew, 15-angle adjusting pin, 16-angle adjusting screw, 17-angle adjusting mounting hole and 18-cutter handle.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
As shown in fig. 1 to 6 together, the boring cutter for machining the valve seat ring and the guide pipe hole comprises a rough machining boring cutter 1 and a finish machining boring cutter 2;
the rough machining boring cutter 1 comprises a first cutter body 3, a first conical surface blade 4, a second conical surface rough machining blade 5 and a third conical surface blade 6 are circumferentially arranged on the first cutter body 3, a cutting end of the first cutter body 3 is coaxially and circumferentially fixedly connected with a conduit hole rough machining boring cutter 7, and the length of the conduit hole rough machining boring cutter 7 is 5-10 cm;
the finish machining boring cutter 2 comprises a second cutter body 8, a second conical surface finish machining blade 9 is circumferentially installed on the second cutter body 8, a blade angle fine adjustment mechanism for adjusting the inclination angle of the second conical surface finish machining blade 9 is arranged on the second cutter body 8, a conduit hole finish machining boring cutter 10 is coaxially and circumferentially and fixedly connected with the cutting end of the second cutter body 8, and the length of the conduit hole finish machining boring cutter 10 is larger than the hole depth of the conduit hole.
It should be known that in the prior art, a first conical surface, a second conical surface and a third conical surface with different inclination angles are sequentially arranged in a sealing conical surface of a valve seat ring, the machining precision of the second conical surface positioned in the middle of the sealing conical surface of the valve seat ring is the highest, the machining precision of the second conical surface is corresponding to the first conical surface, the second conical surface and the third conical surface, a first conical surface blade 4, a second conical surface rough machining blade 5 and a third conical surface blade 6 are arranged on a rough machining boring cutter 1, a second conical surface fine machining blade 9 is arranged on a fine machining boring cutter 2, and the cutting machining of the sealing conical surface of the valve seat ring is realized through the structural arrangement of the blades (the first conical surface blade 4, the second conical surface rough machining blade 5, the third conical surface blade 6 and the second conical surface fine machining blade 9 are all machining blades, which are also referred;
during processing, firstly, a rough machining boring cutter 1 is used for rough machining of a workpiece through a machine tool, the length of a conduit hole rough machining boring cutter 7 of the rough machining boring cutter 1 is only set to be between 5 and 10cm, so that the conduit hole rough machining boring cutter 7 has stronger stability during processing, the condition of radial runout of the conduit hole rough machining boring cutter 7 is reduced, the processing precision is improved, according to the actual length of the conduit hole rough machining boring cutter 7 on the rough machining boring cutter 1, the conduit hole rough machining boring cutter 7 of the rough machining boring cutter 1 partially processes the depth of the conduit hole of the workpiece to be between 5 and 10cm, meanwhile, a first conical surface blade 4 and a third conical surface blade 6 on the rough machining boring cutter 1 complete the processing of a first conical surface and a third conical surface on a valve seat ring sealing conical surface of the workpiece, and after a second conical surface of the valve seat ring sealing conical surface of the workpiece is processed by the rough machining blade 5, a margin of 0.1 to 0.2mm is reserved for the second conical surface, during rough machining, the rough machining boring cutter 1 simultaneously performs coaxial machining on the valve seat ring sealing conical surface and the guide pipe hole of the workpiece, so that the concentricity machining precision of the valve seat ring sealing conical surface and the guide pipe hole of the workpiece is guaranteed;
then, a workpiece is finely processed by using a finish machining boring cutter 2 through a machine tool, because errors generated during production of a second conical surface finish machining blade 9 component on the finish machining boring cutter 2 can cause a certain error phenomenon of the cutting angle of the second conical surface finish machining blade 9, in order to ensure the machining precision of the second conical surface, the finish machining boring cutter 2 needs to detect the inclination angle of the second conical surface finish machining blade 9 through a cutter adjusting instrument before finish machining, and adjust the inclination angle of the second conical surface finish machining blade 9 through a blade angle fine adjustment mechanism, when in finish machining, a conduit hole finish machining boring cutter 10 part of the finish machining boring cutter 2 takes a conduit hole of 5-10 cm machined by the rough machining boring cutter 1 as a guide, the machining position of the finish machining boring cutter 2 is ensured, the radial run-out condition of the conduit hole finish machining boring cutter 10 is reduced, and the conduit hole of the workpiece is run-through machined by the conduit hole finish machining boring, meanwhile, the second conical surface finish machining blade 9 finishes finish machining of the second conical surface residual amount on the valve seat ring sealing conical surface of the workpiece, and by the principle, the concentricity machining precision of the valve seat ring sealing conical surface of the workpiece and the conduit hole is improved.
In this embodiment, three pressing plates 11 for pressing the first conical surface blade 4, the second conical surface rough machining blade 5 and the third conical surface blade 6 are respectively mounted on the first cutter body 3 through screws, the pressing plate 11 for pressing the second conical surface finish machining blade 9 is mounted on the second cutter body 8 through screws, and the positions of the first conical surface blade 4, the second conical surface rough machining blade 5, the third conical surface blade 6 and the second conical surface finish machining blade 9 on the first cutter body 3 and the second cutter body 8 are fixed through the pressing plates 11.
In the embodiment, the first cutter body 3 is provided with three axial adjusting mechanisms for respectively axially adjusting the axial position of the first conical surface blade 4, the axial position of the second conical surface rough machining blade 5 and the axial position of the third conical surface blade 6, the second cutter body 8 is provided with an axial adjusting mechanism for axially adjusting the axial position of the second conical surface finish machining blade 9, the blades are inevitably worn in the machining process of the cutter, certain errors are generated in the production and machining processes of the blades, and the axial adjusting mechanisms are adjusted to ensure the axial position precision of the first conical surface blade 4, the second conical surface rough machining blade 5, the third conical surface blade 6 and the second conical surface finish machining blade 9 on the first cutter body 3 and the second cutter body 8 respectively, so that the machining precision of the cutter is ensured;
the axial adjusting mechanism comprises a strip-shaped top block 12, one end of the strip-shaped top block 12 is fixedly provided with a threaded sleeve 13, an adjusting jackscrew 14 is screwed in the threaded sleeve 13, and the first cutter body 3 and the second cutter body 8 are respectively provided with a pressing plate 11 by screws so as to respectively press the strip-shaped top block 12 of each axial adjusting mechanism on the first cutter body 3 and the second cutter body 8;
an adjusting jackscrew 14 of the axial adjusting mechanism on the second cutter body 8 is arranged on the second cutter body 8 in a propping manner, and one end, far away from the adjusting jackscrew 14, of a strip-shaped jacking block 12 of the axial adjusting mechanism on the second cutter body 8 is arranged at the end part of the second conical surface finishing cutter blade 9 in a propping manner;
adjusting jackscrews 14 of three axial adjusting mechanisms on the first cutter body 3 are respectively propped against the first cutter body 3, one ends of strip-shaped jacking blocks 12 of the three axial adjusting mechanisms on the first cutter body 3, far away from the adjusting jackscrews 14, are respectively propped against the end part of the first conical surface blade 4, the end part of the second conical surface rough machining blade 5 and the end part of the third conical surface blade 6, when the axial position of the blade needs to be adjusted, respectively loosening the pressing plates 11 pressed on the strip-shaped top block 12, the first conical surface blade 4, the second conical surface rough machining blade 5, the third conical surface blade 6 and the second conical surface finish machining blade 9 of the axial adjusting mechanism, by adjusting the position of the adjusting jackscrew 14 on the shaft sleeve 13, the adjusting jackscrew 14 pushes the threaded sleeve 13 to move axially through threads, the threaded sleeve 13 drives the strip-shaped jacking block 12 to change the axial position, due to the supporting effect of the strip-shaped jacking block 12 on the blade, the axial position of the blade can be quickly adjusted.
In this embodiment, the blade angle fine-tuning mechanism includes an angle adjusting pin 15 and an angle adjusting screw 16, the second cutter body 8 is provided with an angle adjusting mounting hole 17, the angle adjusting pin 15 is slidably mounted in the angle adjusting mounting hole 17, one end of the angle adjusting pin 15 penetrates through the angle adjusting mounting hole 17 and is disposed on the side surface of the second conical surface finishing blade 9, the angle adjusting screw 16 is threadedly mounted in the angle adjusting mounting hole 17, the angle adjusting screw 16 is disposed on the other end of the angle adjusting pin 15, the position of the angle adjusting pin 15 in the adjusting mounting hole is adjusted by adjusting the position of the angle adjusting screw 16 in the adjusting mounting hole, the angle adjusting pin 15 and the pressing plate 11 are respectively located on two sides of the second conical surface finishing blade 9, and the inclination angle of the second conical surface finishing blade 9 is adjusted by adjusting the positions of the angle adjusting pin 15 and the pressing plate 11, the angle adjustment mounting hole 17 is equipped with two on the second cutter body 8, promotes the controllability, has quick convenient effect when adjusting second cone finish machining blade 9.
In this embodiment, the tool shanks 18 of the first tool body 3 and the second tool body 8 are both flange type tool shanks 18, and have good installation accuracy.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A boring cutter for processing valve seat rings and conduit holes is characterized by comprising a rough processing boring cutter and a finish processing boring cutter;
the rough machining boring cutter comprises a first cutter body, wherein a first conical surface blade, a second conical surface rough machining blade and a third conical surface blade are circumferentially arranged on the first cutter body, a cutting end of the first cutter body is coaxially and circumferentially fixedly connected with a guide pipe hole rough machining boring cutter, and the length of the guide pipe hole rough machining boring cutter is 5-10 cm;
the fine machining boring tool comprises a second tool body, a second conical surface fine machining blade is circumferentially installed on the second tool body, a blade angle fine adjustment mechanism for adjusting the inclination angle of the second conical surface fine machining blade is arranged on the second tool body, a guide pipe hole fine machining boring tool is coaxially and circumferentially and fixedly connected with a cutting end of the second tool body, and the length of the guide pipe hole fine machining boring tool is larger than the hole depth of the guide pipe hole.
2. The boring tool for machining the valve seat ring and the guide pipe hole as claimed in claim 1, wherein three pressing plates for pressing the first conical surface blade, the second conical surface roughing blade and the third conical surface blade are mounted on the first cutter body through screws respectively, and the pressing plate for pressing the second conical surface finishing blade is mounted on the second cutter body through screws respectively.
3. The boring tool for machining the valve seat ring and the guide pipe hole as claimed in claim 2, wherein the first tool body is provided with three axial adjusting mechanisms for axially adjusting the axial position of the first conical surface blade, the axial position of the second conical surface rough machining blade and the axial position of the third conical surface blade respectively, and the second tool body is provided with an axial adjusting mechanism for axially adjusting the axial position of the second conical surface finish machining blade;
the axial adjusting mechanism comprises a strip-shaped jacking block, one end of the strip-shaped jacking block is fixedly provided with a threaded sleeve, an adjusting jackscrew is screwed in the threaded sleeve, and pressing plates are respectively mounted on the first cutter body and the second cutter body through screws so as to respectively press the strip-shaped jacking block of each axial adjusting mechanism on the first cutter body and the second cutter body;
adjusting jackscrews of the three axial adjusting mechanisms on the first cutter body are respectively arranged on the first cutter body in a propping manner, and one ends, far away from the adjusting jackscrews, of strip-shaped jacking blocks of the three axial adjusting mechanisms on the first cutter body are respectively arranged on the end part of the first conical surface blade, the end part of the second conical surface rough machining blade and the end part of the third conical surface blade in a propping manner;
the adjusting jackscrew of the axial adjusting mechanism on the second cutter body is arranged on the second cutter body in a propping mode, and one end, far away from the adjusting jackscrew, of the strip-shaped jacking block of the axial adjusting mechanism on the second cutter body is arranged at the end portion of the second conical surface fine machining blade in a propping mode.
4. The boring tool for machining the valve seat ring and the guide pipe hole as claimed in claim 3, wherein the blade angle fine adjustment mechanism comprises an angle adjustment pin and an angle adjustment screw, the second tool body is provided with an angle adjustment mounting hole, the angle adjustment pin is slidably mounted in the angle adjustment mounting hole, one end of the angle adjustment pin penetrates through the angle adjustment mounting hole and abuts against the side surface of the second conical surface finish machining blade, the angle adjustment screw is threadedly mounted in the angle adjustment mounting hole, and the angle adjustment screw abuts against the other end of the angle adjustment pin.
5. The boring tool for machining the valve seat ring and the guide pipe hole as claimed in claim 4, wherein the tool shanks of the first tool body and the second tool body are both flange type tool shanks.
6. The machining method of the boring cutter for machining the valve seat ring and the guide pipe hole according to any one of claims 1 to 5, characterized by comprising the steps of:
firstly, roughly machining a workpiece by using the rough machining boring cutter through a machine tool, machining the depth of a conduit hole of the workpiece to be between 5 and 10cm by using the rough machining boring cutter part of the conduit hole of the rough machining boring cutter according to the actual length of the rough machining boring cutter of the conduit hole on the rough machining boring cutter, simultaneously machining a first conical surface and a third conical surface on a valve seat ring sealing conical surface of the workpiece by using a first conical surface blade and a third conical surface blade on the rough machining boring cutter, and leaving a margin of 0.1 to 0.2mm for a second conical surface after machining the second conical surface of the valve seat ring sealing conical surface of the workpiece by using a second conical surface rough machining blade;
and then, performing finish machining on the workpiece by using the finish machining boring tool through a machine tool, wherein the finish machining boring tool part of the conduit hole of the finish machining boring tool takes a conduit hole with the depth of 5-10 cm, which is machined by the rough machining boring tool, as a guide, the conduit hole of the workpiece is subjected to through machining by the conduit hole finish machining boring tool, and meanwhile, the second conical surface finish machining blade is used for finishing the finish machining of the residual amount of the second conical surface on the sealing conical surface of the valve seat ring of the workpiece.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011182133.7A CN112355591A (en) | 2020-10-29 | 2020-10-29 | Boring cutter for machining valve seat ring and guide pipe hole and machining method of boring cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011182133.7A CN112355591A (en) | 2020-10-29 | 2020-10-29 | Boring cutter for machining valve seat ring and guide pipe hole and machining method of boring cutter |
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| CN112355591A true CN112355591A (en) | 2021-02-12 |
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| CN202011182133.7A Pending CN112355591A (en) | 2020-10-29 | 2020-10-29 | Boring cutter for machining valve seat ring and guide pipe hole and machining method of boring cutter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245114A (en) * | 2023-06-30 | 2023-12-19 | 北京新风航天装备有限公司 | Device and method for machining precise coaxial holes in narrow space |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245114A (en) * | 2023-06-30 | 2023-12-19 | 北京新风航天装备有限公司 | Device and method for machining precise coaxial holes in narrow space |
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Application publication date: 20210212 |