CN102744561B - Deep hole machining process - Google Patents
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- CN102744561B CN102744561B CN201210253380.0A CN201210253380A CN102744561B CN 102744561 B CN102744561 B CN 102744561B CN 201210253380 A CN201210253380 A CN 201210253380A CN 102744561 B CN102744561 B CN 102744561B
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- 238000003754 machining Methods 0.000 title abstract description 32
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 27
- 230000003467 diminishing effect Effects 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention discloses a deep hole machining process. The deep hole machining process includes: step one, drilling: machining deep holes to be machined on a numerical control machine tool by a connecting rod drill; step two, broaching: replacing a cutting drill of the connecting rod drill in the step one with a broach drill, and then machining drilled holes obtained in the step one by the numerical control machine tool; and step three, reaming: machining holes obtained in the step two on the numerical control machine tool by a long-rod reamer. The connecting rod drill comprises the cutting drill, a first handle, and a first connecting rod mounted between the cutting drill and the first handle coaxially. The long-rod reamer comprises a reamer head, a second handle, and a second connecting rod mounted between the reamer head and the second handle coaxially. The deep hole machining process is simple in steps, simple and convenient in actual operation, low in input cost, high in machining quality and quick in machining speed, and the problems that machining is inconvenient, actual operation is not easy to control, machining efficiency is low, machining precision is hard to guarantee and the like in the existing deep hole machining process by drilling prior to boring can be solved effectively.
Description
Technical field
The invention belongs to Deep-Hole Drilling Technology field, especially relate to a kind of deep hole processing technology.
Background technology
In coal-winning machine processing and manufacturing process, the cooling system of rocker arm of coal mining machine adopts dismountable bascule, and the water inlet of this cooling system enters from two identical deep holes of structure of rocking arm earhole side.The diameter of above-mentioned two deep holes is that Φ 65mm and hole depth are 625mm, and the upper surface of above-mentioned two deep holes is 545mm apart from the distance between rocker arm of coal mining machine housing outer face, that is to say, the actual working depth that adds above-mentioned two deep holes in man-hour is 80mm.During actual use, the hole face of above-mentioned two deep holes not only needs sealing, but also need with the chiller assembly that is positioned at its front side in succession.Actually add man-hour, the hole precision of above-mentioned two deep holes is H7 level (being basic hole system 7 class precisions), and the Geometrical Tolerance Principle of two deep holes is also stricter.
Deep hole processing technology according to boring after traditional subdrilling adds man-hour, and carry out in two steps front and back, and its processing technology is as follows: first adopt brill cutter to carry out roughing, get out in advance the prebored hole of diameter of phi 50mm; Afterwards, then carry out fine finishining, specifically prebored hole is carried out to the Finish Machining Bore that boring processing obtains machine-shaping.In actual process, because of roughing and accurately machined machining benchmark disunity, the centre of location disunity of above-mentioned roughing prebored hole and Finish Machining Bore, aperture surplus is inhomogeneous, thereby can only boring process, and on boring machine, processes.But, adopt boring machine to add man-hour, due to can only be from the earhole end feed of rocker arm of coal mining machine, thereby feed narrow space, practical operation is extremely inconvenient, the degree of depth of adding above-mentioned two deep holes reaches 625mm, need to by special elongated boring cutter bar, proofread and correct the deviation of prebored hole position, and bite is little, length expends time in, only above-mentioned two deep holes being carried out to fine finishining just needs just can complete for 24 hours, and working (machining) efficiency is very low, is seriously restricting the execution cycle of product.
To sum up, for feed narrow space and the darker deep hole of hole depth, during the deep hole processing technology actual mechanical process of boring after existing subdrilling, there is processing inconvenience, practical operation is wayward, working (machining) efficiency is low, machining accuracy is difficult to number of drawbacks and the deficiencies such as assurance, has had a strong impact on the process-cycle of rocker arm of coal mining machine housing.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of deep hole processing technology is provided, simple, the actual behaviour of its processing technology step hole is easy, input cost is low and crudy is high, process velocity is fast, can effectively solve the deep hole processing technology of boring exists after existing subdrilling processing inconvenience, practical operation is wayward, working (machining) efficiency is low, machining accuracy is difficult to the problems such as assurance.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of deep hole processing technology, need deep hole processing to be positioned at one side-lower of workpiece set on product to be processed, the described upper surface that needs deep hole processing and the distance between described workpiece upper surface are at the bottom of H1 and its hole and the distance between described workpiece upper surface is H2, the aperture that needs deep hole processing is Φ d, and need the working depth Δ H=H2-H1 of deep hole processing, needing the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece is H3, H1 > 500mm wherein, H2 > 600mm, H3≤50mm, d < 2 * H3, it is characterized in that this technique comprises the following steps:
Step 1, boring: on Digit Control Machine Tool, adopt extension bar drill bit to process the described deep hole processing that needs, and obtain the boring that diameter is Φ d1; Actually add man-hour, the cutting depth of described extension bar drill bit is Δ H;
Described extension bar drill bit comprise cut drill, handle of a knife one and be arranged on cut drill and handle of a knife one between connecting rod one, described cut drill, connecting rod one and handle of a knife one are coaxial laying; The diameter of described cut drill is Φ d1, and the total length of cut drill and connecting rod one is greater than H2, and described handle of a knife one is installed on described Digit Control Machine Tool; D1=d-Δ d1 wherein, d is the aperture that needs deep hole processing, Δ d1=3mm～8mm; The diameter of described connecting rod one is less than 2 * H3, and wherein H3 needs the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece;
Step 2, reaming: the cut drill of the drill bit of extension bar described in step 1 is replaced by after reaming bit, adopts described Digit Control Machine Tool to process the boring obtaining in step 1, and obtain the hole that diameter is Φ d2;
The length of described reaming bit and its diameter identical with the length of cut drill is Φ d2, d2=d-Δ d2 wherein, and d is the aperture that needs deep hole processing, Δ d2=0.5mm ± 0.1mm;
Step 3, fraising: on Digit Control Machine Tool, adopt stock reamer to process the hole obtaining in step 2, obtaining machine-shaping and diameter is the deep hole of Φ d;
Described stock reamer comprise reamer cutter head, handle of a knife two and be arranged on reamer cutter head and handle of a knife two between connecting rod two, described reamer cutter head, connecting rod two and handle of a knife two are coaxial laying; The total length of described reamer cutter head and connecting rod two is greater than H2, and described handle of a knife two is installed on described Digit Control Machine Tool; Wherein d is the aperture that needs deep hole processing; The diameter of described connecting rod two is less than 2 * H3, and wherein H3 needs the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece.
Above-mentioned a kind of deep hole processing technology, it is characterized in that: the rear portion of cut drill described in step 1 is provided with plug-in mounting and enters the cylindric plug in connecting rod one, and the leading section correspondence of connecting rod one is provided with the cylindrical grooves of inserting for described cylindric plug, between described cylindric plug and cylindrical grooves, is interference fit.
Above-mentioned a kind of deep hole processing technology, is characterized in that: in step 1, adopt extension bar drill bit the described deep hole processing that needs to be added to man-hour, the rotation speed n=40r/min ± 5r/min of described extension bar drill bit, feed speed v
f=10mm/min ± 2mm/min;
In step 2, adopt described Digit Control Machine Tool to add man-hour to the boring obtaining in step 1, the rotation speed n=45r/min ± 5r/min of described reaming bit, feed speed v
f=10mm/min ± 2mm/min;
In step 3, adopt stock reamer to add man-hour to the hole obtaining in step 2, the rotation speed n=28r/min ± 4r/min of described stock reamer, feed speed v
f=8mm/min ± 2mm/min.
Above-mentioned a kind of deep hole processing technology, is characterized in that: connecting rod described in step 1 one is cylindrical bar or diameter diminishing conical rod from top to bottom, and the upper end diameter of described connecting rod one is less than 2 * H3; Connecting rod two described in step 3 is cylindrical bar.
Above-mentioned a kind of deep hole processing technology, it is characterized in that: the described upper surface of deep hole processing and the distance H 1=545mm between described workpiece upper surface of needing, at the bottom of needing the hole of deep hole processing and the distance H 2=625mm between described workpiece upper surface, need the aperture Φ d=65mm of deep hole processing, and need the working depth Δ H=H2-H1 of deep hole processing, need the centerline hole of deep hole processing and the spacing H3=36mm between the described lateral wall of workpiece;
The diameter of cut drill described in step 1 is Φ d1=Φ 50mm, and in step 1, obtain boring aperture be Φ 50mm; The diameter of phi d2=Φ 64.5mm of reaming bit described in step 2, and in step 2, the aperture of the hole that obtains is Φ 64.5mm.
Above-mentioned a kind of deep hole processing technology, is characterized in that: in step 1, adopt extension bar drill bit the described deep hole processing that needs to be added to man-hour, the rotation speed n=40r/min of described extension bar drill bit, feed speed v
f=10mm/min;
In step 2, adopt described Digit Control Machine Tool to add man-hour to the boring obtaining in step 1, the rotation speed n=45r/min of described reaming bit, feed speed v
f=10mm/min;
In step 3, adopt stock reamer to add man-hour to the hole obtaining in step 2, the rotation speed n=28r/min of described stock reamer, feed speed v
f=8mm/min.
Above-mentioned a kind of deep hole processing technology, is characterized in that: in step 1, the total length of cut drill and connecting rod one is 650mm, the total length 670mm of the cutter head of reamer described in step 3 and connecting rod two.
Above-mentioned a kind of deep hole processing technology, it is characterized in that: in step 1, the length of cut drill is 260mm, the length of described connecting rod one is 390mm and its is diameter diminishing conical rod from top to bottom, and the upper end diameter of described connecting rod one is that Φ 60mm and its bottom diameter are Φ 58mm; The diameter of the cutter head of reamer described in step 3 is Φ 65mm, and the diameter of connecting rod two is Φ 68mm, and the length of the anterior knife edge part of described reamer cutter head is 55mm.
Above-mentioned a kind of deep hole processing technology, is characterized in that: the Digit Control Machine Tool described in step 1 is boring machine.
Above-mentioned a kind of deep hole processing technology, is characterized in that: between described cylindric plug and cylindrical grooves, by trip bolt, be fixed.
The present invention compared with prior art has the following advantages:
1, processing technology step is simple, actual controlling conveniently, and crudy is easily controlled.
2, the extension bar drill bit structure that adopts is simple, reasonable in design, processing and fabricating and use easy and simple to handle and input cost is low, and result of use is good.
3, the stock reamer that adopts is simple in structure, reasonable in design, processing and fabricating and use easy and simple to handle and input cost is low, and result of use is good.
Preboring operation while 4, cancelling roughing in the deep hole processing technology of boring after former subdrilling, the processing of once feeling relieved when fine finishining, need not correct hole site deviation by elongated boring cutter bar, thereby can effectively guarantee the machining accuracy in hole, and time saving and energy saving.
5, crudy is high and working (machining) efficiency is high, process time used of wherein holing is 40min, reaming process time used is 70min, process time used of reaming is 80min, in process, assisting tool change time is 60min, that is to say, the time of a deep hole of processing is only 250min, compare with the deep hole processing technology (processing 2 same deep hole required times is 24 hours) of boring after the existing subdrilling of employing, working (machining) efficiency is largely increased, and machining accuracy is effectively guaranteed, through boring, after reaming and three steps of fraising, can disposablely scrape out the high accuracy process of deep hole.To sum up, compare with the deep hole processing technology of boring after the existing subdrilling of employing, the present invention has alleviated operator's difficulty of processing to a great extent, shortened the process-cycle, reduced processing cost, and deep hole machining efficiency of the present invention is doubled many, quality is also guaranteed, center, one-time positioning hole, and hole allowance is even, can adopt the process program of direct brill, expansion, hinge.Meanwhile, the extension bar drill bit adopting and stock are larger can effectively guarantee product quality, has also improved machining accuracy.
In sum, simple, the actual behaviour of processing technology step of the present invention hole is easy, input cost is low and crudy is high, process velocity is fast, can effectively solve the deep hole processing technology of boring exists after existing subdrilling processing inconvenience, practical operation is wayward, working (machining) efficiency is low, machining accuracy is difficult to number of drawbacks and the deficiencies such as assurance.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is processing process block diagram of the present invention.
Fig. 2 is the structural representation that the present invention adopts extension bar drill bit.
Fig. 3 is the structural representation that the present invention adopts stock reamer.
Description of reference numerals:
1-cut drill; 2-connecting rod one; 3-handle of a knife one;
4-reamer cutter head; 5-handle of a knife two; 6-connecting rod two;
7-trip bolt.
The specific embodiment
A kind of deep hole processing technology as shown in Figure 1, need deep hole processing to be positioned at one side-lower of workpiece set on product to be processed, the described upper surface that needs deep hole processing and the distance between described workpiece upper surface are at the bottom of H1 and its hole and the distance between described workpiece upper surface is H2, the aperture that needs deep hole processing is Φ d, and need the working depth Δ H=H2-H1 of deep hole processing, needing the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece is H3, H1 > 500mm wherein, H2 > 600mm, H3≤50mm, d < 2 * H3, this technique comprises the following steps:
Step 1, boring: on Digit Control Machine Tool, adopt extension bar drill bit to process the described deep hole processing that needs, and obtain the boring that diameter is Φ d1.Actually add man-hour, the cutting depth of described extension bar drill bit is Δ H.
In the present embodiment, product to be processed is that rocker arm of coal mining machine and described workpiece are rocking arm earhole, and needing deep hole processing is the inlet opening that is positioned at rocking arm earhole side, and the machining accuracy that needs deep hole processing is H7 level.
The described upper surface of deep hole processing and the distance H 1=545mm between described workpiece upper surface of needing, at the bottom of needing the hole of deep hole processing and the distance H 2=625mm between described workpiece upper surface, the aperture that needs deep hole processing is Φ d=65mm, and need the working depth Δ H=H2-H1=80mm of deep hole processing, needing the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece is H3=36mm, and the centerline hole that needs deep hole processing is 36mm apart from the distance of rocking arm earhole end face.Owing to needing the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece, be H3=36mm, thereby the space of feed is narrower.
As shown in Figure 2, described extension bar drill bit comprise cut drill 1, handle of a knife 1 and be arranged on cut drill 1 and handle of a knife 1 between connecting rod 1, described cut drill 1, connecting rod 1 and handle of a knife 1 are coaxial laying.The diameter of described cut drill 1 is Φ d1, and the total length of cut drill 1 and connecting rod 1 is greater than H2, and described handle of a knife 1 is installed on described Digit Control Machine Tool.D1=d-Δ d1 wherein, d is the aperture that needs deep hole processing, Δ d1=3mm～8mm; The diameter of described connecting rod 1 is less than 2 * H3, and wherein H3 needs the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece.
Actually add man-hour, described connecting rod 1 is cylindrical bar or diameter diminishing conical rod from top to bottom, and the upper end diameter of described connecting rod 1 is less than 2 * H3.
In the present embodiment, the diameter of described cut drill 1 is Φ d1=Φ 50mm, and in step 1, obtain boring aperture be Φ 50mm.The diameter that described cut drill 1 adopts for machining technique field is the unit-type drill head of Φ 50mm, i.e. standard Φ 50 drill bits.
Actually add man-hour, the rear portion of described cut drill 1 is provided with plug-in mounting and enters the cylindric plug in connecting rod 1, and the leading section correspondence of connecting rod 1 is provided with the cylindrical grooves of inserting for described cylindric plug, between described cylindric plug and cylindrical grooves, is interference fit.In the present embodiment, the diameter of described cylindric plug is Φ 30mm, and the magnitude of interference 0.12mm～0.14mm of described cylindric plug.
In the present embodiment, between described cylindric plug and cylindrical grooves, by trip bolt 7, be fixed.
In the present embodiment, in step 1, the total length of cut drill 1 and connecting rod 1 is 650mm, and wherein, the length of described cut drill 1 is 260mm, and the length of connecting rod 1 is 390mm.Described connecting rod 1 is diameter diminishing conical rod from top to bottom, and the upper end diameter of described connecting rod 1 is that Φ 60mm and its bottom diameter are Φ 58mm.
The project organization of described handle of a knife 1 is mainly the rigidity of strengthening to the full extent cutter, and in the present embodiment, the length of handle of a knife 1 is 270mm.
In the present embodiment, the Digit Control Machine Tool described in step 1 is boring machine.
In actual process, in step 1, adopt extension bar drill bit the described deep hole processing that needs to be added to man-hour, the rotation speed n=40r/min ± 5r/min of described extension bar drill bit, feed speed v
f=10mm/min ± 2mm/min.
In the present embodiment, adopt extension bar drill bit the described deep hole processing that needs to be added to man-hour, the rotation speed n=40r/min of described extension bar drill bit, feed speed v
f=10mm/min, and actual working depth is 80mm, be 40min process time.Actually add man-hour, can to rotating speed and feed speed, adjust accordingly according to actual needs.
Step 2, reaming: the cut drill 1 of the drill bit of extension bar described in step 1 is replaced by after reaming bit, adopts described Digit Control Machine Tool to process the boring obtaining in step 1, and obtain the hole that diameter is Φ d2.
Identical and its diameter of the length of the length of described reaming bit and cut drill 1 is Φ d2, d2=d-Δ d2 wherein, and d is the aperture that needs deep hole processing, Δ d2=0.5mm ± 0.1mm.
In the present embodiment, the diameter of phi d2=Φ 64.5mm of described reaming bit, and in step 2, the aperture of the hole that obtains is Φ 64.5mm.
In actual process, in step 2, adopt described Digit Control Machine Tool to add man-hour to the boring obtaining in step 1, the rotation speed n=45r/min ± 5r/min of described reaming bit, feed speed v
f=10mm/min ± 2mm/min.
In the present embodiment, adopt described Digit Control Machine Tool to add man-hour to the boring obtaining in step 1, the rotation speed n=45r/min of described reaming bit, feed speed v
f=10mm/min, and actual working depth is 80mm, be 70min process time.Actually add man-hour, can to rotating speed and feed speed, adjust accordingly according to actual needs.
Step 3, fraising: on Digit Control Machine Tool, adopt stock reamer to process the hole obtaining in step 2, obtaining machine-shaping and diameter is the deep hole of Φ d.
As shown in Figure 3, described stock reamer comprise reamer cutter head 4, handle of a knife 25 and be arranged on reamer cutter head 4 and handle of a knife 25 between connecting rod 26, described reamer cutter head 4, connecting rod 26 and handle of a knife 25 are coaxial laying.The total length of described reamer cutter head 4 and connecting rod 26 is greater than H2, and described handle of a knife 25 is installed on described Digit Control Machine Tool, and wherein d is the aperture that needs deep hole processing.The diameter of described connecting rod 26 is less than 2 * H3, and wherein H3 needs the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece.
In the present embodiment, the diameter of phi 65mm hole standard reamer that the reamer cutter head 4 adopting adopts for machining technique field, the axiality of reamer cutter head 4 and connecting rod 26 is Φ 0.01.
In the present embodiment, described connecting rod 26 is cylindrical bar, connecting rod 26, diameter be Φ 68mm.The total length 670mm of described reamer cutter head 4 and connecting rod 26, the diameter of described reamer cutter head 4 is Φ 65mm, the length of described reamer cutter head 4 anterior knife edge parts is 55mm.Actual man-hour, the diameter of reamer cutter head 4 of adding
In actual process, in step 3, adopt stock reamer to add man-hour to the hole obtaining in step 2, the rotation speed n=28r/min ± 4r/min of described stock reamer, feed speed v
f=8mm/min ± 2mm/min.In the present embodiment, adopt stock reamer the hole obtaining in step 2 to be added to man-hour, the rotation speed n=28r/min of described stock reamer, feed speed v
f=8mm/min, and actual working depth is 80mm, be 80min process time.Actually add man-hour, can to rotating speed and feed speed, adjust accordingly according to actual needs.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (9)
1. a deep hole processing technology, need deep hole processing to be positioned at one side-lower of workpiece set on product to be processed, the described upper surface that needs deep hole processing and the distance between described workpiece upper surface are at the bottom of H1 and its hole and the distance between described workpiece upper surface is H2, the aperture that needs deep hole processing is Φ d, and need the working depth Δ H=H2-H1 of deep hole processing, needing the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece is H3, H1 > 500mm wherein, H2 > 600mm, H3≤50mm, d < 2 * H3, it is characterized in that this technique comprises the following steps:
Step 1, boring: on Digit Control Machine Tool, adopt extension bar drill bit to process the described deep hole processing that needs, and obtain the boring that diameter is Φ d1; Actually add man-hour, the cutting depth of described extension bar drill bit is Δ H;
Described extension bar drill bit comprise cut drill (1), handle of a knife one (3) and be arranged on cut drill (1) and handle of a knife one (3) between connecting rod one (2), described cut drill (1), connecting rod one (2) and handle of a knife one (3) are coaxial laying; The diameter of described cut drill (1) is Φ d1, and the total length of cut drill (1) and connecting rod one (2) is greater than H2, and described handle of a knife one (3) is installed on described Digit Control Machine Tool; D1=d-Δ d1 wherein, d is the aperture that needs deep hole processing, Δ d1=3mm～8mm; The diameter of described connecting rod one (2) is less than 2 * H3, and wherein H3 needs the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece;
Step 2, reaming: the cut drill of the drill bit of extension bar described in step 1 (1) is replaced by after reaming bit, adopts described Digit Control Machine Tool to process the boring obtaining in step 1, and obtain the hole that diameter is Φ d2;
Identical and its diameter of the length of the length of described reaming bit and cut drill (1) is Φ d2, d2=d-Δ d2 wherein, and d is the aperture that needs deep hole processing, Δ d2=0.5mm ± 0.1mm;
Step 3, fraising: on Digit Control Machine Tool, adopt stock reamer to process the hole obtaining in step 2, obtaining machine-shaping and diameter is the deep hole of Φ d;
Described stock reamer comprise reamer cutter head (4), handle of a knife two (5) and be arranged on reamer cutter head (4) and handle of a knife two (5) between connecting rod two (6), described reamer cutter head (4), connecting rod two (6) and handle of a knife two (5) are coaxial laying; The total length of described reamer cutter head (4) and connecting rod two (6) is greater than H2, and described handle of a knife two (5) is installed on described Digit Control Machine Tool; Wherein d is the aperture that needs deep hole processing; The diameter of described connecting rod two (6) is less than 2 * H3, and wherein H3 needs the centerline hole of deep hole processing and the spacing between the described lateral wall of workpiece;
In step 1, adopt extension bar drill bit the described deep hole processing that needs to be added to man-hour, the rotation speed n=40r/min ± 5r/min of described extension bar drill bit, feed speed v
f=10mm/min ± 2mm/min;
In step 2, adopt described Digit Control Machine Tool to add man-hour to the boring obtaining in step 1, the rotation speed n=45r/min ± 5r/min of described reaming bit, feed speed v
f=10mm/min ± 2mm/min;
In step 3, adopt stock reamer to add man-hour to the hole obtaining in step 2, the rotation speed n=28r/min ± 4r/min of described stock reamer, feed speed v
f=8mm/min ± 2mm/min.
2. according to a kind of deep hole processing technology claimed in claim 1, it is characterized in that: the rear portion of cut drill described in step 1 (1) is provided with plug-in mounting and enters the cylindric plug in connecting rod one (2), and the leading section correspondence of connecting rod one (2) is provided with the cylindrical grooves of inserting for described cylindric plug, between described cylindric plug and cylindrical grooves, is interference fit.
3. according to a kind of deep hole processing technology claimed in claim 1, it is characterized in that: connecting rod described in step 1 one (2) is cylindrical bar or diameter diminishing conical rod from top to bottom, and the upper end diameter of described connecting rod one (2) is less than 2 * H3; Connecting rod two (6) described in step 3 is cylindrical bar.
4. according to a kind of deep hole processing technology claimed in claim 1, it is characterized in that: the described upper surface of deep hole processing and the distance H 1=545mm between described workpiece upper surface of needing, at the bottom of needing the hole of deep hole processing and the distance H 2=625mm between described workpiece upper surface, need the aperture Φ d=65mm of deep hole processing, and need the working depth Δ H=H2-H1 of deep hole processing, need the centerline hole of deep hole processing and the spacing H3=36mm between the described lateral wall of workpiece;
The diameter of cut drill described in step 1 (1) is Φ d1=Φ 50mm, and in step 1, obtain boring aperture be Φ 50mm; The diameter of phi d2=Φ 64.5mm of reaming bit described in step 2, and in step 2, the aperture of the hole that obtains is Φ 64.5mm.
5. according to a kind of deep hole processing technology claimed in claim 4, it is characterized in that: in step 1, adopt extension bar drill bit the described deep hole processing that needs to be added to man-hour, the rotation speed n=40r/min of described extension bar drill bit, feed speed v
f=10mm/min;
In step 2, adopt described Digit Control Machine Tool to add man-hour to the boring obtaining in step 1, the rotation speed n=45r/min of described reaming bit, feed speed v
f=10mm/min;
In step 3, adopt stock reamer to add man-hour to the hole obtaining in step 2, the rotation speed n=28r/min of described stock reamer, feed speed v
f=8mm/min.
6. according to a kind of deep hole processing technology claimed in claim 4, it is characterized in that: the total length of cut drill described in step 1 (1) and connecting rod one (2) is 650mm the total length 670mm of the cutter head of reamer described in step 3 (4) and connecting rod two (6).
7. according to a kind of deep hole processing technology claimed in claim 6, it is characterized in that: the length of cut drill described in step 1 (1) is 260mm, the length of described connecting rod one (2) is 390mm and its is diameter diminishing conical rod from top to bottom, and the upper end diameter of described connecting rod one (2) is that Φ 60mm and its bottom diameter are Φ 58mm; The diameter of the cutter head of reamer described in step 3 (4) is Φ 65mm, and the diameter of connecting rod two (6) is Φ 68mm, and the length of the anterior knife edge part of described reamer cutter head (4) is 55mm.
8. according to a kind of deep hole processing technology described in claim 1 or 2, it is characterized in that: the Digit Control Machine Tool described in step 1 is boring machine.
9. according to a kind of deep hole processing technology claimed in claim 2, it is characterized in that: between described cylindric plug and cylindrical grooves, by trip bolt (7), be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210253380.0A CN102744561B (en) | 2012-07-21 | 2012-07-21 | Deep hole machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210253380.0A CN102744561B (en) | 2012-07-21 | 2012-07-21 | Deep hole machining process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102744561A CN102744561A (en) | 2012-10-24 |
| CN102744561B true CN102744561B (en) | 2014-09-17 |
Family
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