CN109079447A - Diesel engine stand deep hole processing method - Google Patents
Diesel engine stand deep hole processing method Download PDFInfo
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- CN109079447A CN109079447A CN201811212910.0A CN201811212910A CN109079447A CN 109079447 A CN109079447 A CN 109079447A CN 201811212910 A CN201811212910 A CN 201811212910A CN 109079447 A CN109079447 A CN 109079447A
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- deep hole
- cutter head
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- diesel engine
- drilling
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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
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- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of diesel engine stand deep hole processing methods, comprising the following steps: polishing blank cavity；Drilling machine top of support section deep hole；Drill and ream drilling bottom outlet；Coarse-fine hinge bottom outlet；Gadder Hough face section deep hole；Chamfering.Processing technology of the present invention is simple, easy to operate.The pilot drill cutter head hexagonal blade composite drilling cutting different using centre drill and two positions, substantially increase processing efficiency, hexagonal blade chip-breaking performance is good, and knife bar and cutter head chip removal are smooth, and cutter head can work in the case where being fully cooled lubricating condition when cutting, cutter head center is to just when drilling, it avoids boring partially, chamfering taper is uniform, while above-mentioned measure further increases processing efficiency, deep hole machining quality is greatly improved, ensure that the geometric tolerances such as concentricity and the position degree of deep hole.
Description
Technical field
The present invention relates to a kind of deep hole processing method, the processing side of profound cross bore on especially a kind of diesel engine stand
Method belongs to technical field of mechanical processing.
Background technique
It is a difficult point in frame processing that the stay-bolt for being used to install main beating cap on diesel engine stand, which runs through deep hole,.
As shown in Figure 1, deep hole 11 is through to main beating cap mounting surface, aperture d1=φ 55 from 1 top surface of rack by taking L32/40 type as an example
Mm, hole depth h reach 1231mm, and 11 middle part of deep hole is away from the articulation for having one section of d2=φ 52H8 depth 60mm at 1 mm of top surface h1=592 of rack
Hole 12 is 20 ° of chamfered transitions between 55 deep hole 11 of roughness requirements Ra3.2, φ 52H8 articulation hole 12 and φ, while in deep hole 11
There is a blank cavity 13 at 12 upside about 10mm of middle part articulation hole, deep hole 11 is also penetrated through with 1 side oilhole 14 of rack, it can thus be appreciated that
Deep hole 11 in rack 1 belongs to typical profound intersection pore structure, and the chip removal of the processing of deep hole 11, knife partially are easily bored in process
Tool cooling etc. all has difficulties.
Processing the method that above-mentioned profound cross bore uses at present is to put 1 side of rack, and 1 top surface of rack surpasses to horizontal boring and milling machine
Main shaft and Hough face surpass to two stations of machine tool chief axis, bored by fluted drill, expand in the way of deep hole 11 is connected, then fraising and
Chamfering.But fluted drill bores reaming and easily bores partially, when drilling through blank cavity 13, at 12 position of middle transition φ 52H8 articulation hole
It can not accurately connect, φ 52H8 articulation hole 12 and φ 55 deep hole, 11 concentricities are very poor, simultaneously because rose reamer is not only thin but also long, carry out
When chamfer machining, due to factors such as cutter self weights, chamfering taper smalls while greatly, is unfavorable for installing the sealing of stay-bolt,
11 processing quality of deep hole often not can guarantee.Furthermore above method processing efficiency is extremely low, needs to consume the plenty of time and carries out brill expansion
Hole, tool wear is fast, and replacement cutter non-cutting time is long, is unfavorable for producing in enormous quantities.
Summary of the invention
The object of the present invention is to provide a kind of processing technologys to be simple and convenient to operate, high in machining efficiency, deep hole machining is high-quality
Diesel engine stand deep hole processing method.
The present invention is achieved by the following technical programs:
A kind of diesel engine stand deep hole processing method, comprising the following steps:
1) the blank cavity in the middle part of pincers worker polishing deep hole, it is ensured that blank cavity top and bottom are smooth；
2) rack top surface is placed on numerical control horizontal boring-milling bed towards machine tool chief axis is sleeping, and guarantees deep hole axis and lathe to be processed
Main-shaft axis is coaxial；
3) pilot drill drilling deep hole, withdrawing after direct drilling depth to H1, workpiece chip removal, then by pilot drill rapid feed to depth are utilized
Continue to drill at degree H2, drill through to blank cavity, on the upside of pilot drill rapid feed to blank cavity floor, continues to bore
It is deep, complete rack top surface section deep hole machining；
4) pilot drill cutter head, the articulation hole bottom outlet in the middle part of drilling deep hole are replaced, bottom outlet depth presses design requirement；
5) head-exchangeable reamer coarse-fine hinge bottom outlet in two times is replaced, the processing of articulation hole is completed；
6) rack is turned around, makes rack Hough facing towards main shaft, using pilot drill by step 3) method drilling deep hole to and frame side
Rack Hough face section deep hole machining is completed in oilhole perforation in face；
7) rack is stood up on NC vertical drilling machine, processes the chamfering between rack deep hole and articulation hole using rose reamer.
The purpose of the present invention can also be further realized by following technical measures.
Diesel engine stand deep hole processing method above-mentioned, wherein H2 is less than H1 in step 3).
Diesel engine stand deep hole processing method above-mentioned, wherein the pilot drill includes knife handle, knife bar and interchangeable cutter head,
Knife handle both ends are connected with machine tool chief axis and knife bar one end respectively, and interchangeable cutter head is fixed on the knife bar other end；Knife bar shaft two sides
It is respectively equipped with the long cambered surface chip space of axial direction of perforation, interchangeable cutter head includes body of tool bit, centre drill and two polygonal inserts, cutter head
Body is fixed on knife bar, and body of tool bit two sides are respectively equipped with interior cold hole, and centre drill is fixed on body of tool bit center, centre drill two sides difference
Equipped with chip space, the chip space is connected to the long cambered surface chip space of the axial direction of knife bar shaft two sides respectively, a polygonal insert
Body of tool bit a side is fixed on along upper, another polygonal insert is fixed in the middle part of body of tool bit, is located at centre drill side.
Diesel engine stand deep hole processing method above-mentioned, wherein respectively symmetrically being set on the knife bar other end and body of tool bit
There is guide support plate, the guide support plate on knife bar and the guide support plate interlaced arrangement on body of tool bit.
Diesel engine stand deep hole processing method above-mentioned, wherein the polygonal insert is by high temperature resistant, wear-resisting and anti-
Coating treatment is impacted, polygonal insert tool cutting edge angle Kr=28 °, axial positive rake angle degree yp=5 °, polygonal insert periphery is equipped with disconnected
Consider slot to be worth doing.
Diesel engine stand deep hole processing method above-mentioned, wherein the rose reamer includes shank, intermediate extension bar and interchangeable
Whole cutter head, shank are fixed on machine tool chief axis, and intermediate extension bar both ends are solid with shank one end and interchangeable whole cutter head one end respectively
Even, the interchangeable entirety cutter head other end is uniformly distributed along the circumference multiple tilting cutting edges.
Diesel engine stand deep hole processing method above-mentioned, wherein the inclination angle alpha of the cutting edge and hole to be processed
Chamfer angle is equal.
Processing technology of the present invention is simple, easy to operate.Pilot drill cutter head six sides different using centre drill and two positions
Shape blade unit drilling, elder generation's centre drill is cut when drilling, then the hexagonal blade cutting of centre drill lower right side, last body of tool bit
The hexagonal blade on upper side edge edge is cut, and a feed can shape deep hole machining, substantially increases processing efficiency.Wherein six
Side shape blade guarantees that cutting is sharper smooth using suitable tool cutting edge angle and axial positive rake angle, the setting of hexagonal blade periphery
Chip-breaker can resolutely cut off chip, and chip-breaking performance is good, the chip after cutting can along centre drill two sides chip space through knife bar bar
The long cambered surface chip space of the axial direction of body two sides is smoothly discharged, and furthermore body of tool bit two sides are respectively equipped with interior cold hole, can ensure that cutter head is filling
It works under the conditions of point cooling and lubricating, knife bar and body of tool bit are equipped with the guide support plate of interlaced arrangement, it is ensured that cutter head when drilling
Central alignment avoids boring partially, and above-mentioned measure greatly improves deep hole machining quality while further increasing processing efficiency,
It ensure that the geometric tolerances such as concentricity and the position degree of deep hole.It is cut when deep hole chamfering of the present invention using overlength rose reamer,
Due to multiple tilt angles cutting edge equal with Hole chamfering angle to be processed that be uniformly distributed along the circumference on rose reamer cutter head, a feed
Chamfering can be completed, chamfering taper is uniform.Tool wear of the present invention is small, and cutter changing frequency is low, is suitable for producing in enormous quantities.
The advantages and features of the present invention will be illustrated and explained by the non-limitative illustration of preferred embodiment below,
These embodiments only provide as an example referring to attached drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of diesel engine stand；
Fig. 2 is manufacturing procedure structural schematic diagram of the invention；
Fig. 3 is pilot drill structural schematic diagram of the invention；
Fig. 4 is the A of Fig. 3 to enlarged diagram；
Fig. 5 is the structural schematic diagram of polygonal insert of the present invention；
Fig. 6 is the structural schematic diagram of rose reamer of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Fig. 2, the present invention the following steps are included:
1) the blank cavity 13 at 11 middle part of pincers worker polishing deep hole, it is ensured that 13 top and bottom of blank cavity are smooth；
2) 1 top surface of rack is placed on numerical control horizontal boring-milling bed 2 towards machine tool chief axis is sleeping, and guarantee 11 axis of deep hole to be processed with
Machine tool chief axis axis coaxle, as shown in the first station figure in Fig. 2；
3) 3 drilling deep hole of pilot drill of 55 cutter head of φ, withdrawing after direct drilling depth to H1=200mm are utilized, then workpiece chip removal will
Continue to drill at 55 pilot drill of φ, 3 rapid feed to 2=195mm of depth H, drill through to blank cavity 13, by 55 pilot drill 3 of φ
On the upside of rapid feed to 13 bottom surface of blank cavity at 20mm, continue to bore deep 30mm, completes 1 top surface of rack section deep hole machining；
It 4) is 51 cutter head of φ by the bit replacing of pilot drill 3,12 bottom outlet of φ 52H8 articulation hole in the middle part of drilling deep hole 11 to φ 51, bottom
Hole depth presses design requirement；
5) head-exchangeable reamer coarse-fine hinge bottom outlet in two times is replaced, the processing of φ 52H8 articulation hole 12 is completed；
6) rack 1 is turned around, makes 1 Hough of rack facing towards main shaft, is bored deeply using the pilot drill 3 of 55 cutter head of φ by step 3) method
Hole 11 is penetrated through to 1 side oilhole 14 of rack, 1 Hough face of rack section deep hole machining is completed, such as the second station figure institute in Fig. 2
Show；
7) rack 1 is stood up on NC vertical drilling machine 4, processes 55 deep hole 11 of rack φ and φ 52H8 articulation using rose reamer 5
20 ° of chamferings between hole 12, as shown in the 3rd station figure in Fig. 2.
As shown in Figure 3 and Figure 4, pilot drill 3 is interior cold pilot drill, including knife handle 31, knife bar 32 and interchangeable cutter head 33, knife handle
31 both ends are connected with machine tool chief axis and 32 left end of knife bar respectively, and interchangeable cutter head 33 is fixed on 32 right end of knife bar by fastener,
32 shaft two sides of knife bar are respectively equipped with the long cambered surface chip space 34 of axial direction of perforation.Interchangeable cutter head 33 includes body of tool bit 331, centre drill
332 and two hexagonal blades 333, body of tool bit 331 be fixed on knife bar 32 by fastener, 331 two sides of body of tool bit are set respectively
There is interior cold hole 334,332 material of centre drill is whole hard alloy, and centre drill 332 is fixed on 331 center of body of tool bit, stretches out length
Degree is 5mm, and the apex point cone angle of centre drill 332 is 118 °, and two sides are respectively equipped with chip space 335, chip space 335 respectively with knife bar
The long cambered surface chip space 34 of the axial direction of 32 shaft two sides is connected to.One hexagonal blade 333 is fixed by screws on body of tool bit 331
Along upper, another hexagonal blade 333 is fixed by screws in 331 middle part of body of tool bit for side, is located at 332 lower right side of centre drill,
When drilling, first centre drill 332 is cut, and then the hexagonal blade 333 of 332 lower right side of centre drill is cut, on last body of tool bit 331
The hexagonal blade 333 on side edge is cut.
As shown in figure 5, hexagonal blade 333 passes through high temperature resistant, multiple wear-resisting and shock resistance coating treatment, hexagonal blade
333 tool cutting edge angle Kr=28 °, axial positive rake angle degree yp=5 °, so that cutting is sharper smooth, on 333 periphery of hexagonal blade also
Equipped with sharp chip-breaker 336.In addition, guide support plate 35 is respectively symmetrically equipped on 32 right end of knife bar and body of tool bit 331, totally four
A guide support plate 35, two guide support plates 35 on two guide support plates 35 and body of tool bit 331 on knife bar 32 interlock
Arrangement, is supported guiding to cutter head when for drilling, with anti-drilling inclined.
As shown in fig. 6, rose reamer 5 is overlength rose reamer, including shank 51, intermediate extension bar 52 and interchangeable whole cutter head 53,
Shank 51 is fixed on machine tool chief axis, and intermediate 52 both ends of extension bar are screwed with 51 left end of shank and interchangeable whole 53 right end of cutter head respectively
Be connected, interchangeable entirety cutter head 53 left end is uniformly distributed along the circumference four tilting cutting edges 54, the inclination angle alpha of cutting edge 54 with it is to be added
The chamfer angle in work hole is equal, α=20 ° in the present embodiment.By hard alloy strip welding on interchangeable whole cutter head 53 after, beat
Mill forms 20 ° of cutting edges.
In addition to the implementation, the present invention can also have other embodiments, all to use equivalent substitution or equivalent transformation shape
At technical solution, be all fallen within the protection domain of application claims.
Claims (7)
1. a kind of diesel engine stand deep hole processing method, which comprises the following steps:
1) the blank cavity in the middle part of pincers worker polishing deep hole, it is ensured that blank cavity top and bottom are smooth；
2) rack top surface is placed on numerical control horizontal boring-milling bed towards machine tool chief axis is sleeping, and guarantees deep hole axis and lathe to be processed
Main-shaft axis is coaxial；
3) pilot drill drilling deep hole, withdrawing after direct drilling depth to H1, workpiece chip removal, then by pilot drill rapid feed to depth are utilized
Continue to drill at degree H2, drill through to blank cavity, on the upside of pilot drill rapid feed to blank cavity floor, continues to bore
It is deep, complete rack top surface section deep hole machining；
4) pilot drill cutter head, the articulation hole bottom outlet in the middle part of drilling deep hole are replaced, bottom outlet depth presses design requirement；
5) head-exchangeable reamer coarse-fine hinge bottom outlet in two times is replaced, the processing of articulation hole is completed；
6) rack is turned around, makes rack Hough facing towards main shaft, using pilot drill by step 3) method drilling deep hole to and frame side
Rack Hough face section deep hole machining is completed in oilhole perforation in face；
7) rack is stood up on NC vertical drilling machine, processes the chamfering between rack deep hole and articulation hole using rose reamer.
2. diesel engine stand deep hole processing method as described in claim 1, it is characterised in that: H2 is less than H1 in step 3).
3. diesel engine stand deep hole processing method as described in claim 1, it is characterised in that: the pilot drill include knife handle,
Knife bar and interchangeable cutter head, knife handle both ends are connected with machine tool chief axis and knife bar one end respectively, and interchangeable cutter head is fixed on the knife bar other end
On；Knife bar shaft two sides are respectively equipped with the long cambered surface chip space of axial direction of perforation, and interchangeable cutter head includes body of tool bit, centre drill and two
Polygonal insert, body of tool bit are fixed on knife bar, and body of tool bit two sides are respectively equipped with interior cold hole, and centre drill is fixed in body of tool bit
The heart, centre drill two sides are respectively equipped with chip space, and the chip space connects with the long cambered surface chip space of the axial direction of knife bar shaft two sides respectively
Logical, a polygonal insert is fixed on body of tool bit a side along upper, another polygonal insert is fixed in the middle part of body of tool bit, is located at
Centre drill side.
4. diesel engine stand deep hole processing method as claimed in claim 3, it is characterised in that: the knife bar other end and cutter head
Guide support plate, the guide support plate interlaced arrangement on guide support plate and body of tool bit on knife bar are respectively symmetrically equipped on body.
5. diesel engine stand deep hole processing method as claimed in claim 3, it is characterised in that: the polygonal insert is by resistance to
High temperature, wear-resisting and shock resistance coating treatment, polygonal insert tool cutting edge angle Kr=28 °, axial positive rake angle degree yp=5 °, polygonal insert
Periphery is equipped with chip-breaker.
6. diesel engine stand deep hole processing method as described in claim 1, it is characterised in that: the rose reamer include shank,
Intermediate extension bar and interchangeable whole cutter head, shank are fixed on machine tool chief axis, intermediate extension bar both ends respectively with shank one end and interchangeable
Whole cutter head one end is connected, and the interchangeable entirety cutter head other end is uniformly distributed along the circumference multiple tilting cutting edges.
7. diesel engine stand deep hole processing method as claimed in claim 6, it is characterised in that: the tilt angle of the cutting edge
α is equal with the chamfer angle in hole to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212910.0A CN109079447B (en) | 2018-10-18 | 2018-10-18 | Deep hole machining method for diesel engine frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212910.0A CN109079447B (en) | 2018-10-18 | 2018-10-18 | Deep hole machining method for diesel engine frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109079447A true CN109079447A (en) | 2018-12-25 |
| CN109079447B CN109079447B (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811212910.0A Active CN109079447B (en) | 2018-10-18 | 2018-10-18 | Deep hole machining method for diesel engine frame |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1808500A1 (en) * | 1991-04-05 | 1993-04-15 | Sp K B Almazno Rastochnykh I R | Method for machining holes |
| EP1693146A1 (en) * | 2003-11-11 | 2006-08-23 | Makino J. Co. Ltd. | Deep hole boring method and device |
| CN102744561A (en) * | 2012-07-21 | 2012-10-24 | 西安煤矿机械有限公司 | Deep hole machining process |
| CN103252521A (en) * | 2013-05-28 | 2013-08-21 | 中国一拖集团有限公司 | Cutter for machining coaxial holes with equal diameter and large interval and machining method thereof |
| CN104625614A (en) * | 2014-12-09 | 2015-05-20 | 陈建秋 | Method for machining stainless steel deep-hole thin-wall part |
| CN105921943A (en) * | 2016-05-26 | 2016-09-07 | 长治清华机械厂 | Machining method for axial step deep hole system of thin-wall ring |
-
2018
- 2018-10-18 CN CN201811212910.0A patent/CN109079447B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1808500A1 (en) * | 1991-04-05 | 1993-04-15 | Sp K B Almazno Rastochnykh I R | Method for machining holes |
| EP1693146A1 (en) * | 2003-11-11 | 2006-08-23 | Makino J. Co. Ltd. | Deep hole boring method and device |
| CN102744561A (en) * | 2012-07-21 | 2012-10-24 | 西安煤矿机械有限公司 | Deep hole machining process |
| CN103252521A (en) * | 2013-05-28 | 2013-08-21 | 中国一拖集团有限公司 | Cutter for machining coaxial holes with equal diameter and large interval and machining method thereof |
| CN104625614A (en) * | 2014-12-09 | 2015-05-20 | 陈建秋 | Method for machining stainless steel deep-hole thin-wall part |
| CN105921943A (en) * | 2016-05-26 | 2016-09-07 | 长治清华机械厂 | Machining method for axial step deep hole system of thin-wall ring |
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| CN109079447B (en) | 2020-05-01 |
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Address after: 212211 No. 402, Changjiang Road, Zhenjiang City, Jiangsu Province Patentee after: China Shipbuilding Power Zhenjiang Co.,Ltd. Address before: 402 Changjiang Road, Runzhou District, Zhenjiang City, Jiangsu Province Patentee before: CSSC MARINE POWER Co.,Ltd. |
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