CN107953110B - Tool and method for the processing of diesel engine base base bearing screw hole - Google Patents
Tool and method for the processing of diesel engine base base bearing screw hole Download PDFInfo
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- CN107953110B CN107953110B CN201710950897.8A CN201710950897A CN107953110B CN 107953110 B CN107953110 B CN 107953110B CN 201710950897 A CN201710950897 A CN 201710950897A CN 107953110 B CN107953110 B CN 107953110B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000003754 machining Methods 0.000 claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 238000010622 cold drawing Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000002826 coolant Substances 0.000 claims abstract description 12
- 238000010079 rubber tapping Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 238000005520 cutting process Methods 0.000 claims description 22
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 238000003672 processing method Methods 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 3
- 238000005482 strain hardening Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 229910000997 High-speed steel Inorganic materials 0.000 description 6
- 241001074085 Scophthalmus aquosus Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010009 beating Methods 0.000 description 3
- 239000002173 cutting fluid Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 210000003734 kidney Anatomy 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
- B23Q11/1023—Tool holders, or tools in general specially adapted for receiving the cutting liquid from the spindle
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Milling Processes (AREA)
Abstract
A kind of tool and method for the processing of diesel engine base base bearing screw hole, including cryoprobe handle, diameter conversion sleeve, indexable interior cold cotter mill cutter, the indexable interior cold drill bit of counterbore, bottom outlet indexable interior cold drill bit, screw tap knife handle, tapping long bar and screw tap in interior cold drawing nail, interior cold core axis, lengthening, it is assembled into four kinds of process tools respectively；Procedure of processing is one, assembles oblique surface machining cutter, and machining spindle holds the aperture of screw hole, two, assembly counter bore processing cutter, machining spindle holds screw hole counterbore, three, assembly bottom outlet process tool, and machining spindle holds screw hole bottom outlet, four, threading tool is assembled, machining spindle holds screw hole screw thread；Coolant liquid is successively by the knife handle central through hole of cryoprobe handle in interior cold drawing nail, the central through hole of interior cold core axis and lengthening when processing, into cutter inner cooling hole to cooling in cutter progress.The present invention realizes interior cold working, using the high-speed cutter with diameter conversion sleeve and chip breaking function, enhances cutter rigidity, improves processing efficiency.
Description
Technical field
The present invention relates to a kind of metal works machining tool and methods, more particularly to one kind to be used for diesel engine base base bearing
The tool and method of screw hole processing, belong to technical field of mechanical processing.
Background technique
The base bearing screw hole of marine low speed diesel engine base is mainly used for installing main beating cap, main beating cap and main bearing seat
Main bearing hole is constituted after combination, is used for built-up crankshaft.The mounting surface of the marine diesel main beating cap of MAN series is all using 90
V-type bevel structure is spent, as shown in Figure 1, base bearing screw hole 38 is located at level on 25 degree of inclined-plane 34, which is located at machine
The position of 33 or less 1000mm of plane or so on seat.Referring to Fig. 2, the base bearing screw hole 38 by base bearing screw hole counterbore 35,
Base bearing screw hole screw thread 36 and base bearing screw hole bottom outlet 37 are formed by connecting from top to bottom, and the processing of base base bearing screw hole 38 is exactly
It to be carried out under conditions of not interfering plane 33 on base.Since the position of base bearing screw hole 38 is far from machine tool chief axis, Er Qieqi
Processing is to carry out on the inclined-plane 34 at an angle with axially bored line, therefore processing is very difficult, and conventional processing method is at present
It is processed in such a way that drill jig and Mohs extension bar add fluted drill, detailed procedure of processing is as follows:
1) bushing plate is installed
Installation fixes bushing plate in advance on the main bearing seat of every cylinder, has 4 hole locations to correspond to base on each bushing plate
The processing hole location of base bearing screw hole；With the calculating of 6 cylinder diesels, 7 grades of main bearing seats are shared, needs to install altogether and fixes 7 bushing plates,
28 base bearing screw holes are processed, if bushing plate lazy weight 7, it is also necessary to by the brill on the machined base bearing screw hole finished
Form removable is installed on unprocessed main bearing seat.
2) flat hole mouth inclined-plane is milled
Installation Mohs knife handle, Mohs extension bar and Mohs band tang cotter mill cutter (material is high-speed steel, material:
W18Cr4V), using the bushing plate for installing mating drill bushing, the plane of enough depth is processed on 25 degree of inclined-planes, convenient for subsequent
Point and guiding, cotter mill cutter cutter linear velocity 15m/min, feed velocity 0.1mm/r are fallen when fluted drill is processed.
3) machining spindle holds screw hole counterbore
1. cotter mill cutter is changed to fluted drill (material be high-speed steel, material: W18Cr4V) of the Mohs with tang, utilize
Bushing plate simultaneously installs matched drill bushing, preboring base bearing screw hole counterbore (diameter is 0.4mm smaller than drawing size), twist drill tool line
Speed 15m/min, 0.1~0.2mm/r of feed velocity.
2. fluted drill is changed to reamer (material is high-speed steel, material: W18Cr4V), matched using bushing plate and installation
The drill bushing of set, machining spindle hold screw hole counterbore to drawing size, reamer cutter linear velocity 15m/min, and feed velocity 0.2~
0.3mm/r。
4) machining spindle holds screw hole bottom outlet
1. reamer is changed to bottom outlet fluted drill (material is high-speed steel, material: W18Cr4V), using bushing plate and pacify
Fill matched drill bushing, preboring base bearing screw hole bottom outlet (diameter is 0.4mm smaller than drawing size), bottom outlet twist drill tool linear velocity
15m/min, 0.1~0.2mm/r of feed velocity.
3. bottom outlet fluted drill is changed to bottom outlet reamer (material is high-speed steel, material: W18Cr4V), bushing plate is utilized
And matched drill bushing is installed, machining spindle holds screw hole bottom outlet to drawing size, bottom outlet reamer cutter linear velocity 15m/min, into
0.2~0.3mm/r of knife speed.
5) machining spindle holds screw hole screw thread
Threading knife handle, screw tap extension bar and screw tap are installed, machining spindle holds screw hole screw thread, and reaches drawing requirement.
6) finish turn inspection cleaning work
All bushing plates are removed, iron filings inside holes, cutting fluid are cleared up, check hole wall and thread quality, completion.
There are following main problems for traditional diamond-making technique:
1) tooling step is more and complex for operation step.It needs to install numerous bushing plates, and because is processing big L/D ratio
Hole (draw ratio is more than 20 times or more), in order to guarantee processing quality, the processing in hole is all by the way of boring, expanding, it is also necessary to
Matched drill bushing is changed according to different cutter diameters, procedure of processing is cumbersome, tears that tool change time is long, and operation element content is more, labor open
Fatigue resistance is big.
2) process tool low efficiency.Cotter mill cutter, fluted drill, the reamer used all uses Mohs extension bar to lengthen, because
To belong to big L/D ratio cutter, cutter poor rigidity, cutter revolving speed is slow, can only use inefficient W18Cr4V high-speed tool steel, linear speed
Degree generally only 15m/min, often rotates into only 0.1~0.2mm；And in order to which chip breaking and chip removal effect are good, it is necessary to manually or
Process control chip breaking and chip removal, further affect processing efficiency.
3) processing quality is unstable.Since process tool draw ratio reaches 20 times or more, and (cutter is straight for major diameter cutter
Diameter is greater than 50mm), cutting resistance is big, and it is high to the rigid requirements of cutter hub, it is this to be processed in such a way that Mohs extension bar adds fluted drill
It is unstable, it be easy to cause hole wall processing quality poor, it is difficult to reach drawing requirement.
Summary of the invention
The technical problems to be solved by the present invention are: overcoming the defect of existing processing method and cutter, one kind is provided and is used for
The tool and method of diesel engine base base bearing screw hole processing reach and reduce tooling step, simplify operating procedure, promote processing effect
Rate, the effect for stablizing processing quality.
The present invention, which adopts the following technical scheme that, solves its technical problem:
A kind of tool for the processing of diesel engine base base bearing screw hole, includes interior cold drawing nail, interior cold core axis, in lengthening
Cryoprobe handle, diameter conversion sleeve, indexable interior cold cotter mill cutter, the indexable interior cold drill bit of counterbore, the indexable interior cold brill of bottom outlet
Head, screw tap knife handle, tapping long bar and screw tap；
The interior cold core axis follows closely connecting machine tool main shaft by the interior cold drawing, which is equipped with and tapered bore of machine tool spindle
Cooperate the conical surface of positioning and position the centralized positioning axis of cryoprobe handle in the lengthening, the center of the interior cold core axis is equipped with by cold
But the central through hole of liquid；
Cryoprobe handle is connected to the lower section of the interior cold core axis in the lengthening, and the center of cryoprobe handle is equipped with and passes through in the lengthening
The knife handle central through hole of coolant liquid, the top of the knife handle central through hole are equipped with the centralized positioning cooperated with the centralized positioning axis
Hole, lower section are equipped with the cutter positioning hole for the tool shank that is cooperatively connected；
The diameter conversion sleeve be tubular element, be set in the cutter positioning hole, the outer circle of the diameter conversion sleeve with
The cutter positioning hole of cryoprobe handle matches in the lengthening, and the indexable interior cold key is installed in the inner hole of the diameter conversion sleeve
Slotting cutter, the indexable interior cold drill bit of counterbore or the indexable interior cold drill bit of bottom outlet；
The screw tap knife handle is connected on machine tool chief axis, and the screw tap knife handle, tapping long bar and screw tap are sequentially connected.
As a further improvement, the upper end of cryoprobe handle is main shaft installation end face in the lengthening, lower end is Cutting tool installation manner
End face, the outer circle of cryoprobe handle and center positioning hole and cutter positioning hole guarantee high-axiality in the lengthening, the center positioning hole with
The main shaft installation end face and the cutter positioning hole and the Cutting tool installation manner end face guarantee high verticality.
As a further improvement, the bottom surface of the center positioning hole of cryoprobe handle is equipped with seal groove in the lengthening, this is close
The O-shaped rubber seal for preventing coolant liquid from leaking is provided in sealing groove.
As a further improvement, the diameter conversion sleeve is equipped with horizontal knife handle mounting surface and Cutting tool installation manner face, it should
The outer circle of knife handle mounting surface and the diameter conversion sleeve guarantees high verticality, and the Cutting tool installation manner face is interior with the diameter conversion sleeve
Hole guarantees that high verticality, the outer circle and inner hole guarantee high-axiality.
As a further improvement, the diameter conversion sleeve is arranged to a variety of different sizes, the diameter of inner hole is according to institute
Indexable interior cold cotter mill cutter, the indexable interior cold drill bit of counterbore and bottom outlet are stated with the shank diameter of indexable interior cold drill bit come really
It is fixed.
Another technical solution of the invention are as follows:
A kind of processing method of the diesel engine base base bearing screw hole using the tool comprising following specific steps:
Work step one: assembly oblique surface machining cutter, machining spindle hold the aperture of screw hole；
By interior cold drawing nail by screw thread and interior cold core axis connection, the interior cold core axis is tensed with machine tool jaw, makes the cone
Face is fitted closely with tapered bore of machine tool spindle, then O-shaped rubber seal is packed into the sealing for lengthening the center positioning hole of interior cryoprobe handle
In slot, the centralized positioning axis of interior cold core axis is filled in the center positioning hole, and interior cryoprobe handle will be lengthened using bolt and be fixed on
On machine tool chief axis；The knife handle of indexable interior cold cotter mill cutter is packed into diameter conversion sleeve, then fills in cryoprobe handle in lengthening together
Cutter positioning hole in, indexable interior cold cotter mill cutter is fastened on assembly in lengthening on cryoprobe handle using holding screw by side
At oblique surface machining cutter；Using the oblique surface machining cutter being mounted on machine tool chief axis, the inclined-plane at base bearing screw hole aperture is added
Pilot hole of the work at plane, as following process；
Work step two: assembly counter bore processing cutter, machining spindle hold screw hole counterbore；
The diameter conversion sleeve and indexable interior cold cotter mill cutter of oblique surface machining cutter are unloaded on oblique surface machining cutter, are installed
Counterbore indexable interior cold drill bit and its corresponding diameter conversion sleeve form counter bore processing cutter；Using being mounted on machine tool chief axis
On counter bore processing cutter, machining spindle holds screw hole counterbore and clears up iron filings；
Work step three: assembly bottom outlet process tool, machining spindle hold screw hole bottom outlet；
Counterbore indexable interior cold drill bit and its corresponding diameter conversion sleeve are removed on counter bore processing cutter, and bottom outlet is installed
With indexable interior cold drill bit and its corresponding diameter conversion sleeve, bottom outlet process tool is formed；Using being mounted on machine tool chief axis
Bottom outlet process tool, machining spindle hold screw hole bottom outlet, integrally unload lower bottom hole process tool after completion of processing and clear up iron filings in time；
Work step four: assembly threading tool, machining spindle hold screw hole screw thread；
Screw tap knife handle is mounted on machine tool chief axis with machine tool jaw, tapping long bar is mounted on screw tap knife handle, then
Screw tap is mounted on to the lower end of screw tap extension bar, is assembled into threading tool；Utilize the screw thread process being mounted on machine tool chief axis
Cutter, machining spindle hold screw hole screw thread, after clear up and iron filings and check screw processing quality；
While carrying out aforementioned four work step, coolant liquid successively by interior cold drawing nail, interior cold core axis central through hole and
The knife handle central through hole of cryoprobe handle in lengthening, then blade face is reached by the interior cold hole of cutter, carry out the cooling of cutter.
It difference with the prior art of the present invention and has the beneficial effect that:
1, do not need installation bushing plate: the prior art is because use the tool sharpening of big L/D ratio, to guarantee machining accuracy,
Precision just must can guarantee as guiding using drill jig；And the present invention enhances the rigidity of cutter, nothing due to reducing draw ratio
It needs drill jig that can realize accurate positioning, saves the time of every grade of bearing block installation drill jig, it is time saving, it is laborsaving.
2, cold working in can be achieved, can greatly improve Tool in Cutting speed: the prior art uses high-speed steel cotter mill cutter, fiber crops
The processing of the conventional tools such as flower brill can only use cold function outside the cutting fluid of lathe, and cooling effect is insufficient, is not available high speed
Cutter, otherwise cutter is easily damaged due to high temperature；And the tool that the present invention is included all has interior cold structure, cutter is cooling
Sufficiently, so as to improve the cutting parameter of cutter, processing efficiency is improved.
3, can save the work step of reaming: the prior art uses Twist Drill, and aperture size and Hole Wall Roughness are difficult to lead to
Time processing is crossed to guarantee, it is necessary to carry out reaming processing again after piercing to control aperture size and Hole Wall Roughness；And this hair
It is bright to use cold drill bit in efficiently, it only needs time processing to can guarantee aperture size and Hole Wall Roughness, reaches drawing requirement.
4, automatic chip breaking can be achieved, cutting feeding speed greatly improves: fluted drill in the prior art is because without chip breaking
Function must operate the step of --- withdrawing --- drilling according to drilling in processing, to realize chip breaking, iron filings be avoided excessively to twine
Around influencing processing quality and damage cutter, but such operation results in cutting feed time and is significantly increased；And the present invention makes
With interior cold forming cutter, it is provided with chip-breaker on cutting edge roundness, can be realized automatic chip breaking in process, new cutter is in high speed
Coating technology or hard alloy contour rate material are used on Steel material, and cutter wearability greatly improved, make linear velocity
It is improved with cutter revolving speed, furthermore cutter is often rotated into also fast compared with the fluted drill that the prior art uses, so that cutter is cut
It cuts speed to be multiplied, processing efficiency greatly improved.
Advantageous effects of the invention are as follows: simplify processing step and operation, realize interior cold working, using having
The high-speed cutter of diameter conversion sleeve and chip breaking function enhances cutter rigidity, Tool in Cutting parameter is improved, to greatly improve
Processing efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of base and its base bearing screw hole.
Fig. 2 is base bearing screw hole partial enlarged view.
Fig. 3 is component diagram of the invention.
Fig. 4 is the structural schematic diagram of interior cold core axis.
Fig. 5 is the structural schematic diagram of cryoprobe handle in lengthening.
Fig. 6 is the A direction view of Fig. 5.
Fig. 7 is the structural schematic diagram of diameter conversion sleeve.
Fig. 8 is the top view of Fig. 7.
Fig. 9 is oblique surface machining cutter structure assembling schematic diagram.
Figure 10 is counter bore processing cutter Standard schematic diagram.
Figure 11 is bottom outlet process tool Standard schematic diagram.
Figure 12 is threading tool Standard schematic diagram.
Figure 13 is base bearing screw hole aperture machining state schematic diagram.
Figure 14 is base bearing screw hole counterbore machining state schematic diagram.
Figure 15 is base bearing screw hole bottom outlet machining state schematic diagram.
Figure 16 is base bearing screw hole screw thread process status diagram.
In figure, 1-interior cold drawing nail, 2-interior cold core axis, 3-interior six point cylindrical head bolts, 4-O-shaped rubber seal, 5-
Cryoprobe handle in lengthening, 6-interior hexagon concave-end locking screws, 7-diameter conversion sleeves, 8-indexable interior cold cotter mill cutters, 9-is heavy
The indexable interior cold drill bit in hole, the indexable interior cold drill bit of 10-bottom outlets, 11-screw tap knife handles, 12-tapping long bars, 13-
Screw tap, 14-oblique surface machining cutters, 15-counter bore processing cutters, 16-bottom outlet process tools, 17-threading tools, 18-
Center positioning hole, 19-seal grooves, 20-main shafts install end face, 21-positioning splines, 22-connecting holes, 23-disassembly liftings
Hole, 24-knife handle central through holes, 25-cutter positioning holes, 26-fastening screw holes, 27-Cutting tool installation manner end faces, the 28-conical surfaces,
29-blind rivet connecting screw holes, 30-central through holes, 31-centralized positioning axis, plane on 33-bases, 34-inclined-planes, 35-main shafts
Hold screw hole counterbore, 36-base bearing screw hole screw threads, 37-base bearing screw hole bottom outlets, 38-base bearing screw holes, 42-inner holes, 43-
Kidney slot, 44-knife handle mounting surfaces, 45-outer circles, 46-Cutting tool installation manner faces, 47-auxiliary dismounting surfaces.
Specific embodiment
With reference to the accompanying drawing to the present invention do it is further specific be described in detail, but cannot therefore and limit the present invention claims
The range of protection.
Referring to Fig. 3, diagram for the tool of diesel engine base base bearing screw hole processing include interior cold drawing nail 1, it is interior cold
Mandrel 2, lengthen in cryoprobe handle 5, O-shaped rubber seal 4, diameter conversion sleeve 7, indexable interior cold cotter mill cutter 8, counterbore with can turn
Cold drill bit 9, bottom outlet indexable interior cold drill bit 10, screw tap knife handle 11, tapping long bar 12 and screw tap 13 in position.
The interior cold core axis 2 is for cryoprobe handle 5 and machine tool chief axis in the lengthening that is located by connecting, referring to Fig. 4, this is interior cold
The top of mandrel 2 is equipped with the conical surface used for positioning 28 cooperated with tapered bore of machine tool spindle, and the lower part of the interior cold core axis 2 is equipped with center
Locating shaft 31, for positioning cryoprobe handle 5 in the lengthening；The center of the interior cold core axis 2 is equipped with the central through hole 30 of perforation, should
The top of central through hole 30 is equipped with blind rivet connecting screw hole 29.In the field of machining, mandrel is chiefly used in positioning cutterhead, does not have generally
There is central through hole, interior cold core axis 2 of the invention is using the structure for having central through hole 30, it is therefore an objective to be convenient for coolant liquid from the center
Pass through in through-hole 30.
Fig. 5 and Fig. 6 are please referred to, cryoprobe handle 5 is a cylindrical member in the lengthening, and center is equipped with the small straight of perforation
The knife handle central through hole 24 of diameter, so that coolant liquid passes through；The top of the knife handle central through hole 24 is equipped with and the interior cold core axis 2
The center positioning hole 18 that centralized positioning axis 31 cooperates, lower section are equipped with the cutter positioning hole 25 for the tool shank that is cooperatively connected.Institute
The outer circle for stating center positioning hole 18, cutter positioning hole 25 and the interior cryoprobe handle 5 of lengthening must assure that higher concentricity, while in this
In heart location hole 18 and the lengthening in the main shaft installation end face 20 of 5 upper end of cryoprobe handle, the cutter positioning hole 25 and the lengthening
The Cutting tool installation manner end face 27 of 5 lower end of cryoprobe handle must assure that higher verticality, to guarantee cutter lathe when rotating at high speed
Main-shaft core, knife handle center and center cutter keep higher registration, to guarantee processing quality.The center positioning hole 18
The bottom surface contacted with interior 2 end face of cold core axis be equipped with seal groove 19, for installing the O-shaped rubber seal 4, with close
Seal the leakage of coolant liquid.It is equipped with horizontal fastening screw hole 26 in the side in the cutter positioning hole 25, for lateralling secure cutter.
Positioning spline 21, connecting hole 22 and disassembly lifting are equipped on the main shaft installation end face 20 of the upper end of cryoprobe handle 5 in the lengthening
Hole 23.
Fig. 7 and Fig. 8 are please referred to, the diameter conversion sleeve 7 is tubular element, the diameter of outer circle 45 and the lengthening
The internal diameter in the cutter positioning hole 25 of interior cryoprobe handle 5 cooperates, and the outer wall of the outer circle 45 is equipped with kidney slot 43.The diameter conversion sleeve 7
Lower part be equipped with horizontal knife handle mounting surface 44 and Cutting tool installation manner face 46 and two auxiliary dismounting surfaces 47.The outer circle 45 with it is described
The inner hole 42 of diameter conversion sleeve 7 must assure that higher concentricity, the outer circle 45 and knife handle mounting surface 44 and the inner hole
42 will guarantee higher verticality with Cutting tool installation manner face 46, to finally guarantee the concentricity and knife of cutter and main-shaft core
The verticality of tool and main shaft end face.The inner hole 42 of the diameter conversion sleeve 7 is for installing process tool: indexable interior cold keyway milling
Knife 8, the indexable interior cold drill bit 9 of counterbore or the indexable interior cold drill bit 10 of bottom outlet, the diameter of the inner hole 42 is according to different
The shank diameter of process tool determines, can be set to a variety of different sizes, before the processing of base base bearing screw hole, according to making
Matched diameter conversion sleeve 7 is installed with the needs selection of the shank diameter of cutter.
Four groups of processing can be assembled into using the component in the tool for the processing of diesel engine base base bearing screw hole
The cutter of the base bearing screw hole.Its assembly relation is as follows:
One, oblique surface machining cutter 14, for milling the inclined-plane 34 in flat 38 aperture of base bearing screw hole.Referring to Fig. 9, by interior cold drawing
Nail 1 is tensed the interior cold core axis 2 with machine tool jaw by being threadably mounted on the blind rivet connecting screw hole 29 on interior 2 top of cold core axis,
Fit closely the conical surface 28 of interior cold core axis 2 with tapered bore of machine tool spindle, for positioning；O-shaped rubber seal 4 is packed into again and is lengthened
In the seal groove 19 of interior 5 central upper portion location hole of cryoprobe handle, 18 bottom surface, the centralized positioning axis 31 of interior 2 lower part of cold core axis is filled in this
In center positioning hole 18, to position, and interior cryoprobe handle 5 will be lengthened by connecting hole 22 using interior six point cylindrical head bolt 3
It is fixed on machine tool chief axis；The knife handle of indexable interior cold cotter mill cutter 8 is packed into diameter conversion sleeve 7, then fills in lengthening together
In the cutter positioning hole 25 of interior 5 lower part of cryoprobe handle, side can be turned using interior hexagon concave-end locking screw 6 by fastening screw hole 26
Cold cotter mill cutter 8 is fastened in lengthening on cryoprobe handle 5 in position.
Two, counter bore processing cutter 15, the brill for base bearing screw hole counterbore 35 are processed.Referring to Fig. 10, on the inclined-plane
On the basis of process tool 14, indexable interior cold cotter mill cutter 8 and diameter conversion sleeve 7 are unloaded, by the indexable interior cold brill of counterbore
First 9 and its corresponding diameter conversion sleeve 7 be mounted in cutter positioning hole 25, side is passed through using interior hexagon concave-end locking screw 6
The indexable interior cold drill bit 9 of counterbore is fastened in lengthening on cryoprobe handle 5 by fastening screw hole 26.
Three, bottom outlet process tool 16, the brill for base bearing screw hole bottom outlet 37 are processed.Figure 11 is please referred to, is processed in counterbore
On the basis of cutter 15, counterbore indexable interior cold drill bit 9 and diameter conversion sleeve 7 are removed, by the indexable interior cold drill bit of bottom outlet
10 and its corresponding diameter conversion sleeve 7 be mounted in cutter positioning hole 25, side is passed through tight using interior hexagon concave-end locking screw 6
Gu the indexable interior cold drill bit 10 of bottom outlet is fastened in lengthening on cryoprobe handle 5 by screw hole 26.
Four, threading tool 17, the tapping for base bearing screw hole screw thread 36 are processed.Figure 12 is please referred to, with lathe card
Screw tap knife handle 11 is mounted on machine tool chief axis by pawl, and tapping long bar 12 is mounted on screw tap knife handle 11, then screw tap 13 is pacified
Mounted in the lower end of screw tap extension bar 12.
It is as follows using the main work step and processing content of tool progress diesel engine base base bearing screw hole processing:
Work step one: machining spindle holds the aperture of screw hole 38.Figure 13 is please referred to, oblique surface machining cutter 14 is mounted on lathe master
On axis, the inclined-plane 34 of bore portions is processed into plane, the pilot hole as following process.
Work step two: machining spindle holds screw hole counterbore 35.Figure 14 is please referred to, the diameter conversion sleeve of oblique surface machining cutter 14 is unloaded
7 and indexable interior cold cotter mill cutter 8, counterbore indexable interior cold drill bit 9 and its corresponding diameter conversion sleeve 7 are installed, is formed and is sunk
Aperture knife tool 15, machining spindle holds screw hole counterbore 35, and clears up iron filings.
Work step three: machining spindle holds screw hole bottom outlet 37.Please refer to Figure 15, remove the indexable interior cold drill bit 9 of counterbore and its
Corresponding diameter conversion sleeve 7 installs bottom outlet indexable interior cold drill bit 10 and its corresponding diameter conversion sleeve 7, forms bottom outlet and adds
Work cutter 16, machining spindle hold screw hole bottom outlet 37, whole after processing to unload lower bottom hole process tool 16, and clear up iron filings in time.
Work step four: machining spindle holds screw hole screw thread 36.Figure 16 is please referred to, threading tool 17 is installed to machine tool chief axis
On, machining spindle holds screw hole screw thread 36, after clear up and iron filings and check screw processing quality.
While carrying out aforementioned four work step, the cooling of cutting tool is carried out.
Machine tool coolant is successively by cryoprobe handle in interior cold drawing nail 1, the central through hole 30 of interior cold core axis 2 and lengthening when processing
5 knife handle central through hole 24, then blade face is reached by the interior cold hole of cutter, carry out the cooling of cutter.Due to there is coolant liquid
Cooling in carrying out, therefore it is able to use high speed cutting tool；And it lengthens interior cryoprobe handle 5 and passes through interior cold core in machine tool chief axis end face
2 centralized positioning of axis reuses interior six point cylindrical head bolt 3 and connects, and connection more fastens；The outer diameter of cryoprobe handle 5 can in lengthening
Increase diameter according to actual use demand, to reduce the draw ratio of cutter, in the case where the higher speed of mainshaft, also can
Guarantee the stability of cutter rotation and processing；And so that cryoprobe handle 5 is applicable in more for the setting of diameter conversion sleeve 7
The cutter of kind specification, reduces the time for changeing tool in process, reduces labor intensity, improve processing efficiency.
It above are only presently preferred embodiments of the present invention, be not intended to limit the scope of protection of the present invention.The present invention wants
The protection scope asked also should include to obvious transformation of the invention and alternative solution.
Claims (6)
1. a kind of tool for the processing of diesel engine base base bearing screw hole, it is characterised in that: include interior cold drawing nail, interior cold core
Cryoprobe handle in axis, lengthening, diameter conversion sleeve, indexable interior cold cotter mill cutter, the indexable interior cold drill bit of counterbore, bottom outlet are with can turn
Cold drill bit, screw tap knife handle, tapping long bar and screw tap in position；
The interior cold core axis follows closely connecting machine tool main shaft by the interior cold drawing, which is equipped with cooperates with tapered bore of machine tool spindle
The conical surface of positioning and the centralized positioning axis for positioning cryoprobe handle in the lengthening, the center of the interior cold core axis, which is equipped with, passes through coolant liquid
Central through hole；
Cryoprobe handle is connected to the lower section of the interior cold core axis in the lengthening, and the center of cryoprobe handle, which is equipped with, in the lengthening passes through cooling
The knife handle central through hole of liquid, the top of the knife handle central through hole are equipped with the center positioning hole cooperated with the centralized positioning axis, under
Side is equipped with the cutter positioning hole for the tool shank that is cooperatively connected；
The diameter conversion sleeve be tubular element, be set in the cutter positioning hole, the outer circle of the diameter conversion sleeve with it is described
The cutter positioning hole of cryoprobe handle matches in lengthening, and the indexable interior cold keyway milling is installed in the inner hole of the diameter conversion sleeve
Knife, the indexable interior cold drill bit of counterbore or the indexable interior cold drill bit of bottom outlet；
The screw tap knife handle is connected on machine tool chief axis, and the screw tap knife handle, tapping long bar, screw tap three are sequentially connected.
2. the tool according to claim 1 for the processing of diesel engine base base bearing screw hole, it is characterised in that: described
The upper end of cryoprobe handle is main shaft installation end face in lengthening, and lower end is Cutting tool installation manner end face, and the outer circle of cryoprobe handle is in the lengthening
Heart location hole and cutter positioning hole guarantee high-axiality, the center positioning hole and main shaft installation end face and the cutter positioning
Hole and the Cutting tool installation manner end face guarantee high verticality.
3. the tool according to claim 1 for the processing of diesel engine base base bearing screw hole, it is characterised in that: described
The bottom surface of the center positioning hole of cryoprobe handle is equipped with seal groove in lengthening, and the O for preventing coolant liquid from leaking is provided in the seal groove
Type rubber seal.
4. the tool according to claim 1 for the processing of diesel engine base base bearing screw hole, it is characterised in that: described
Diameter conversion sleeve is equipped with horizontal knife handle mounting surface and Cutting tool installation manner face, and the knife handle mounting surface is outer with the diameter conversion sleeve
Circle guarantees high verticality, the inner hole guarantee high verticality in the Cutting tool installation manner face and the diameter conversion sleeve, the outer circle and inner hole
Guarantee high-axiality.
5. the tool according to claim 1 for the processing of diesel engine base base bearing screw hole, it is characterised in that: described
Diameter conversion sleeve is arranged to a variety of different sizes, and the diameter of inner hole can according to the indexable interior cold cotter mill cutter, counterbore use
Cold drill bit and bottom outlet are determined with the shank diameter of indexable interior cold drill bit in indexing.
6. a kind of processing method of the diesel engine base base bearing screw hole using tool described in claim 1, it is characterised in that: institute
Processing method is stated to comprise the following specific steps that:
Work step one: assembly oblique surface machining cutter, machining spindle hold the aperture of screw hole；
By interior cold drawing nail by screw thread and interior cold core axis connection, the interior cold core axis is tensed with machine tool jaw, make the conical surface with
Tapered bore of machine tool spindle fits closely, then O-shaped rubber seal is packed into the seal groove for lengthening the center positioning hole of interior cryoprobe handle,
The centralized positioning axis of interior cold core axis is filled in the center positioning hole, and interior cryoprobe handle will be lengthened using bolt and be fixed on lathe master
On axis；The knife handle of indexable interior cold cotter mill cutter is packed into diameter conversion sleeve, then fills in the cutter for lengthening interior cryoprobe handle together
In location hole, indexable interior cold cotter mill cutter is fastened in lengthening on cryoprobe handle by side using holding screw, is assembled into inclined-plane
Process tool；Using the oblique surface machining cutter being mounted on machine tool chief axis, by the oblique surface machining Cheng Ping at base bearing screw hole aperture
Face, the pilot hole as following process；
Work step two: assembly counter bore processing cutter, machining spindle hold screw hole counterbore；
The diameter conversion sleeve and indexable interior cold cotter mill cutter of oblique surface machining cutter are unloaded on oblique surface machining cutter, and counterbore is installed
With indexable interior cold drill bit and its corresponding diameter conversion sleeve, counter bore processing cutter is formed；Using being mounted on machine tool chief axis
Counter bore processing cutter, machining spindle hold screw hole counterbore and clear up iron filings；
Work step three: assembly bottom outlet process tool, machining spindle hold screw hole bottom outlet；
Counterbore indexable interior cold drill bit and its corresponding diameter conversion sleeve are removed on counter bore processing cutter, installation bottom outlet is used can
Cold drill bit and its corresponding diameter conversion sleeve in indexing form bottom outlet process tool；Utilize the bottom outlet being mounted on machine tool chief axis
Process tool, machining spindle hold screw hole bottom outlet, integrally unload lower bottom hole process tool after completion of processing and clear up iron filings in time；
Work step four: assembly threading tool, machining spindle hold screw hole screw thread；
Screw tap knife handle is mounted on machine tool chief axis with machine tool jaw, tapping long bar is mounted on screw tap knife handle, then by silk
Cone is mounted on the lower end of screw tap extension bar, is assembled into threading tool；Using the threading tool being mounted on machine tool chief axis,
Machining spindle holds screw hole screw thread, after clear up and iron filings and check screw processing quality；
While carrying out aforementioned four work step, coolant liquid is successively by interior cold drawing nail, the central through hole of interior cold core axis and lengthening
The knife handle central through hole of interior cryoprobe handle, then blade face is reached by the interior cold hole of cutter, carry out the cooling of cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710950897.8A CN107953110B (en) | 2017-10-13 | 2017-10-13 | Tool and method for the processing of diesel engine base base bearing screw hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710950897.8A CN107953110B (en) | 2017-10-13 | 2017-10-13 | Tool and method for the processing of diesel engine base base bearing screw hole |
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| CN107953110B true CN107953110B (en) | 2019-03-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109048353A (en) * | 2018-08-24 | 2018-12-21 | 中船动力有限公司 | Diesel engine base base bearing hole processing tooling and method |
| CN110293370A (en) * | 2019-06-19 | 2019-10-01 | 沪东中华造船(集团)有限公司 | The processing method and process tool of tiller and rudder stock cooperation circular cone pin hole below rudder bearer |
| CN113695843A (en) * | 2021-07-30 | 2021-11-26 | 江西昌河航空工业有限公司 | Method for processing internal thread of steel wire thread insert |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6033615B2 (en) * | 1980-12-26 | 1985-08-03 | 株式会社阪村機械製作所 | Turning device in multistage former |
| CN2134902Y (en) * | 1991-12-04 | 1993-06-02 | 翁渊源 | Combined multi-axis boring, drilling, reaming, tapping device |
| CN101327530A (en) * | 2008-05-30 | 2008-12-24 | 沪东重机有限公司 | Tool group and method for processing straight holes on diesel engine stand bevel |
| CN201970143U (en) * | 2011-03-11 | 2011-09-14 | 湖南博云东方粉末冶金有限公司 | Internal cooling device used for machine tool |
| CN202224677U (en) * | 2011-09-28 | 2012-05-23 | 南京数控机床有限公司 | Transitional connecting rod device for boring deep hole |
| CN105728772B (en) * | 2016-05-13 | 2017-10-10 | 陕西柴油机重工有限公司 | The method of high position precision deep hole on processing diesel engine connecting rod |
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