CN113333805A - Variable-section multi-layer intermittent deep hole machining method - Google Patents
Variable-section multi-layer intermittent deep hole machining method Download PDFInfo
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- CN113333805A CN113333805A CN202110705574.9A CN202110705574A CN113333805A CN 113333805 A CN113333805 A CN 113333805A CN 202110705574 A CN202110705574 A CN 202110705574A CN 113333805 A CN113333805 A CN 113333805A
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- 238000003754 machining Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 230000009467 reduction Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 101150103383 phiA gene Proteins 0.000 description 1
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
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Abstract
The invention discloses a variable cross-section multilayer interrupted deep hole machining method, which comprises the following steps: s1, processing an upper guide hole at the design position of the upper end through hole, wherein the diameter of the upper guide hole is the same as the design diameter of the lower end blind hole; s2, drilling a lower centering hole at the design position of the lower end blind hole by the drill bit from the upper guide hole; s3, drilling a reference hole at the position of the lower centering hole by the drill bit through the upper guide hole; s4, feeding a boring cutter from the upper guide hole to bore the reference hole so as to correct the position until the coaxiality of the reference hole and the upper guide hole reaches a design value; s5, feeding a reamer from the upper guide hole to ream the reference hole until the diameter of the reference hole reaches the design value of the lower blind hole; and S6, processing the diameter of the upper guide hole to the design value of the through hole. The invention has the advantages of convenient operation, being beneficial to ensuring the position precision and the size precision of the blind hole, and the like.
Description
Technical Field
The invention relates to a machining method, in particular to a variable-section multi-layer intermittent deep hole machining method.
Background
As shown in the attached figure 1, the upper end and the lower end of a weight-closing part planet carrier of a high-power main speed reducer of a certain model are provided with a plurality of groups (more than or equal to 3) of axial oil holes, the upper end of each oil hole is a through hole, the lower end of each oil hole is a blind hole, the diameters of the two holes are different, the distance L2 is more than 185mm, the depth L3 of each blind hole is more than 210mm, and the oil holes are vertically intersected with the radial holes. The upper and lower coaxiality requirement of each group of oil holes is less than or equal to phi 0.1 mm. The cutter can not be installed and cut in the inner cavity and can only feed from the upper end, and the minimum aperture phi of the cutter during machining is 16mm, and the depth of the hole is more than 230mm (the length-diameter ratio is more than 14).
The variable-section multilayer intermittent oil way hole has the characteristics of deep hole machining and intermittent hole machining, the problems of large cutter swing, large cutter back-off amount, large cutter axial deviation, large hole straightness error, hole eccentricity, size out-of-tolerance and the like exist in the machining process, and the coaxiality and size precision of the hole are difficult to guarantee.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a variable cross-section multilayer intermittent deep hole machining method which is convenient to operate and beneficial to ensuring the position precision and the size precision of a blind hole.
In order to solve the technical problems, the invention adopts the following technical scheme:
a variable cross-section multilayer intermittent deep hole machining method comprises the following steps:
s1, processing an upper guide hole at the design position of the upper end through hole, wherein the diameter of the upper guide hole is the same as the design diameter of the lower end blind hole;
s2, drilling a lower centering hole at the design position of the lower end blind hole by the drill bit from the upper guide hole;
s3, drilling a reference hole at the position of the lower centering hole by the drill bit through the upper guide hole;
s4, feeding a boring cutter from the upper guide hole to bore the reference hole so as to correct the position until the coaxiality of the reference hole and the upper guide hole reaches a design value;
s5, feeding a reamer from the upper guide hole to ream the reference hole until the diameter of the reference hole reaches the design value of the lower blind hole;
and S6, processing the diameter of the upper guide hole to the design value of the through hole.
As a further improvement of the above technical solution: and drilling holes by using the solid carbide center drill in steps S2 and S3.
As a further improvement of the above technical solution: and step S4, a vibration reduction cutter bar is adopted to install a double-edge boring cutter for boring.
As a further improvement of the above technical solution: in step S6, the diameter of the upper guide hole is machined to the design value of the through hole by boring.
Compared with the prior art, the invention has the advantages that: the invention discloses a variable cross-section multilayer intermittent deep hole processing method, which comprises the steps of processing an upper guide hole at the design position of a through hole at the upper end in advance, wherein the diameter of the upper guide hole is the same as the design diameter of a blind hole at the lower end, providing a good positioning and guiding effect for a cutter subsequently, ensuring the coaxiality between a lower centering hole and the upper guide hole, processing a lower centering hole, guiding the cutter to feed and control the position through the positioning and guiding effect provided by the upper guide hole and the lower centering hole, processing a reference hole of the blind hole at the lower end through drilling, boring the reference hole to ensure the position precision of the blind hole at the lower end, reaming the size precision of the blind hole at the lower end, solving the problems of deflection of a deep hole processing cutter, instability of a long cutter rod and low coaxiality precision of the upper hole and the lower hole, and providing technical reference for similar variable cross-section multilayer intermittent deep hole processing.
Drawings
Fig. 1 is a typical structure diagram of a variable-section multilayer discontinuous deep hole.
Fig. 2 is a schematic top view of the carrier.
Fig. 3 is a view a-a of fig. 2.
Fig. 4 is a partially enlarged view of fig. 3.
The reference numerals in the figures denote: 1. a through hole; 2. blind holes; 3. a lower centering hole.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
Fig. 1 to 4 show an embodiment of a variable cross-section multilayer intermittent deep hole processing method according to the present invention, which includes the following steps:
(1) the upper end phi is firstly
(through hole 1) processing to phi
As the lower end of the machining phi
(blind hole 2) is a guide hole of a tool for limiting the position of the tool and performing guide processing, and has an upper end phi
Leaving a finishing allowance;
(2) using a solid carbide core drill of diameter phi 10
Drilling a lower positioning hole 3 to provide a centering hole for subsequent processing and reaming; the lower centering hole 3 is processed by adopting an integral hard alloy center drill, so that the coaxiality of the lower positioning hole 3 and the upper guide hole can be further ensured;
(3) drilling a datum hole phi 16 by using a whole hard alloy center with the diameter phi 16;
(4) installing a double-edged boring cutter by using a vibration reduction cutter bar to enlarge holes and correct the drilling position so as to ensure the coaxiality of an upper hole and a lower hole;
(5) performing mechanical reaming by using an alloy reamer to ensure the dimensional accuracy of the lower blind hole 2;
(6) boring an upper guide hole to a finished product size phi
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (4)
1. A variable cross-section multilayer intermittent deep hole machining method is characterized in that: the method comprises the following steps:
s1, processing an upper guide hole at the design position of the upper end through hole (1), wherein the diameter of the upper guide hole is the same as the design diameter of the lower end blind hole (2);
s2, drilling a lower centering hole (3) at the design position of the lower end blind hole (2) by the drill bit from the upper guide hole;
s3, drilling a reference hole at the position of the lower centering hole (3) by the drill bit through the upper guide hole;
s4, feeding a boring cutter from the upper guide hole to bore the reference hole so as to correct the position until the coaxiality of the reference hole and the upper guide hole reaches a design value;
s5, feeding a reamer from the upper guide hole to ream the reference hole until the diameter of the reference hole reaches the design value of the lower blind hole (2);
and S6, processing the diameter of the upper guide hole to the design value of the through hole (1).
2. The variable cross-section multilayer interrupted deep hole machining method according to claim 1, characterized in that: and drilling holes by using the solid carbide center drill in steps S2 and S3.
3. The variable cross-section multilayer interrupted deep hole machining method according to claim 1, characterized in that: and step S4, a vibration reduction cutter bar is adopted to install a double-edge boring cutter for boring.
4. A variable cross-section multilayer interrupted deep hole machining method according to any one of claims 1 to 3, characterized in that: in step S6, the diameter of the upper guide hole is machined to the design value of the through hole (1) by boring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110705574.9A CN113333805A (en) | 2021-06-24 | 2021-06-24 | Variable-section multi-layer intermittent deep hole machining method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110705574.9A CN113333805A (en) | 2021-06-24 | 2021-06-24 | Variable-section multi-layer intermittent deep hole machining method |
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| Publication Number | Publication Date |
|---|---|
| CN113333805A true CN113333805A (en) | 2021-09-03 |
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| CN202110705574.9A Pending CN113333805A (en) | 2021-06-24 | 2021-06-24 | Variable-section multi-layer intermittent deep hole machining method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114654304A (en) * | 2022-04-19 | 2022-06-24 | 中国航发动力股份有限公司 | Machining method for guaranteeing position degree of precision hole based on compensation method |
| CN114871697A (en) * | 2022-05-06 | 2022-08-09 | 中国第一汽车股份有限公司 | Machining method for deep-cavity special-shaped sensor hole of cast iron cylinder cover |
| CN114905280A (en) * | 2022-02-10 | 2022-08-16 | 中国第一汽车股份有限公司 | High-precision intermittent long and thin blind shaft hole machining device and machining method |
| CN115365765A (en) * | 2022-07-29 | 2022-11-22 | 广联航空工业股份有限公司 | Deep hole machining method with position precision requirement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537733A (en) * | 2013-09-24 | 2014-01-29 | 成都泛华航空仪表电器有限公司 | Pipe body hole forming die for pipe fittings with different diameters |
| CN107262763A (en) * | 2017-07-14 | 2017-10-20 | 哈尔滨汽轮机厂有限责任公司 | Million nuclear steam turbine stator portions set split hardfacing alloy layer pin-and-hole processing method |
| CN107717343A (en) * | 2017-09-28 | 2018-02-23 | 中国航发动力股份有限公司 | A kind of processing method of precise small-diameter blind hole |
| CN111604514A (en) * | 2020-04-28 | 2020-09-01 | 昆明云内动力股份有限公司 | Method for machining shallow inclined hole of cylinder body |
| CN111715918A (en) * | 2020-06-11 | 2020-09-29 | 江苏迈信林航空科技股份有限公司 | Machining method for small-diameter deep hole of aviation shell |
| CN112453461A (en) * | 2020-11-30 | 2021-03-09 | 域鑫科技（惠州）有限公司 | Machining process for inner hole of workpiece |
-
2021
- 2021-06-24 CN CN202110705574.9A patent/CN113333805A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537733A (en) * | 2013-09-24 | 2014-01-29 | 成都泛华航空仪表电器有限公司 | Pipe body hole forming die for pipe fittings with different diameters |
| CN107262763A (en) * | 2017-07-14 | 2017-10-20 | 哈尔滨汽轮机厂有限责任公司 | Million nuclear steam turbine stator portions set split hardfacing alloy layer pin-and-hole processing method |
| CN107717343A (en) * | 2017-09-28 | 2018-02-23 | 中国航发动力股份有限公司 | A kind of processing method of precise small-diameter blind hole |
| CN111604514A (en) * | 2020-04-28 | 2020-09-01 | 昆明云内动力股份有限公司 | Method for machining shallow inclined hole of cylinder body |
| CN111715918A (en) * | 2020-06-11 | 2020-09-29 | 江苏迈信林航空科技股份有限公司 | Machining method for small-diameter deep hole of aviation shell |
| CN112453461A (en) * | 2020-11-30 | 2021-03-09 | 域鑫科技（惠州）有限公司 | Machining process for inner hole of workpiece |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114905280A (en) * | 2022-02-10 | 2022-08-16 | 中国第一汽车股份有限公司 | High-precision intermittent long and thin blind shaft hole machining device and machining method |
| CN114654304A (en) * | 2022-04-19 | 2022-06-24 | 中国航发动力股份有限公司 | Machining method for guaranteeing position degree of precision hole based on compensation method |
| CN114871697A (en) * | 2022-05-06 | 2022-08-09 | 中国第一汽车股份有限公司 | Machining method for deep-cavity special-shaped sensor hole of cast iron cylinder cover |
| CN115365765A (en) * | 2022-07-29 | 2022-11-22 | 广联航空工业股份有限公司 | Deep hole machining method with position precision requirement |
| CN115365765B (en) * | 2022-07-29 | 2023-11-21 | 广联航空工业股份有限公司 | Deep hole machining method with position precision requirement |
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Application publication date: 20210903 |
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