CN102476200A - Processing method and processing tool for step deep hole on combined machine tool - Google Patents
Processing method and processing tool for step deep hole on combined machine tool Download PDFInfo
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- CN102476200A CN102476200A CN2010105611658A CN201010561165A CN102476200A CN 102476200 A CN102476200 A CN 102476200A CN 2010105611658 A CN2010105611658 A CN 2010105611658A CN 201010561165 A CN201010561165 A CN 201010561165A CN 102476200 A CN102476200 A CN 102476200A
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Abstract
The invention discloses a processing method for a step deep hole on a combined machine tool, and the method is used for processing the step deep hole of which the big hole length is more than the small hole length. The processing method comprises the following steps: positioning a first step drill by virtue of a guide sleeve on a template, and drilling and turning a big hole to depth required by the technology; because the length of the smaller diameter part of the first step drill is 15-25mm, forming a small hole guide hole with the corresponding length size on the inner side of the big hole; positioning a second step drill by taking the processed big hole as guidance, and drilling and turning the small hole to the depth required by the technology by taking the small hole guide hole as the basis, wherein the larger diameter part of the second step drill is a non-cutting section, the diameter of the second step drill is smaller than that of the processed large hole; and when the small hole is drilled to the depth required by the technology, ensuring that the larger diameter part of the second step drill still does not reach the step end surface of the step deep hole. The invention also discloses a corresponding processing tool. According to the method and the tool, the problems that the step small hole is always drilled in a sloping mode, a small drill is always broken and the like in the processing process of the step deep hole can be effectively solved.
Description
Technical field
The present invention relates to the processing method and the process tool of a species stage deep hole, particularly a kind of big hole length is greater than processing method and the process tool of ladder deep hole on building-block machine of little hole length.
Background technology
At present, big hole length mainly contains two kinds greater than the processing technology of ladder deep hole on building-block machine of little hole length: a kind of is the macropore of operation 1 (or work step 1) subdrilling ladder deep hole, and promptly big drill bit arrives the technological requirement degree of depth with the fairlead spitting drill macropore on the template; Be that operation 2 (or work step 2) is bored aperture then; Be little drill bit with the fairlead spitting drill aperture on the template to the technological requirement degree of depth, the advantage of this technology is to reduce the drilling degree of depth of little drill bit, thus the problem that reduces little drill bit because poor rigidity fractures; Present this technology is used more generally; But its shortcoming is also obvious, because fairlead is far away apart from aperture when boring aperture, fairlead does not have positioning action basically; The 118 ° of conical surface drillings that just two cutting edges stay when big drill bit drilling macropore of little drill bit; Therefore as easy as rolling off a log brill is inclined to one side, for the thin deep hole of some wall ratios, the wall phenomenon often occurs drilling; Another kind of technology is the aperture of operation 1 (or work step 1) subdrilling ladder deep hole, and promptly little drill bit to the technological requirement degree of depth, is that operation 2 (or work step 2) is bored macropore with the fairlead spitting drill aperture on the template then; Be that big drill bit arrives the technological requirement degree of depth with the location of the fairlead on template expanded hole; Macropore, aperture all were to begin from surface of the work when the advantage of this technology was the beginning drilling, and the fairlead on the template has all played positioning action, so the perpendicularity of aperture, better with the axiality of macropore; Reduce and bore inclined to one side phenomenon generation; Drilling is deep but its shortcoming is little drill bit, and self poor rigidity, therefore fractures than being easier to.
Summary of the invention
The present invention is in order to overcome defective in the above-mentioned prior art; Under the condition of big hole length greater than little hole length of ladder deep hole; A kind of processing method and process tool are provided, and the ladder aperture that can effectively solve the appearance of ladder deep hole work in-process bores problems such as inclined to one side, little drill bit fractures easily easily.
The invention provides the processing method of a species stage deep hole on building-block machine; This method is used for the processing of big hole length greater than the ladder deep hole of little hole length; Comprise the steps: to use first step drill with the location of the fairlead on the template, and drilling macropore to the technological requirement degree of depth; First step drill suitable with said big bore dia than major diameter part, the smaller diameter portion and the hole diameter of first step drill are suitable; And the length of the smaller diameter portion of first step drill is 15 to 25mm, makes the inboard corresponding aperture of length dimension that forms of macropore draw the hole, and this Design of length can improve the positioning accuracy of fairlead, effectively avoids occurring boring partially and fractures phenomenon; Use second step drill to be guide-localization, and to draw the hole with aperture be that basic drilling aperture is to the technological requirement degree of depth with the macropore of processing; Second step drill be divided into non-segment of cutting than large-diameter portion, its diameter is less than the said big bore dia of having processed, second step drill does not arrive the ladder end of said ladder deep hole yet than the major diameter part during star drill to the technological requirement degree of depth.
Wherein, the diameter than the major diameter part of second step drill is littler by 0.05 to 0.10mm than the said big bore dia of having processed, when playing the guide-localization effect, strengthens the rigidity of drill bit.
Wherein, when the aperture of ladder deep hole began drilling, the macropore that partly has length greater than 15mm to be positioned at the ladder deep hole than major diameter of second step drill was used for guide-localization.Can effectively guarantee the ladder deep hole aperture the position degree and with the axiality of the macropore of ladder deep hole.
Wherein, the drilling mode of first step drill and second step drill is the index(ing) feed mode.Can effectively improve chip removal and cooling and lubricating.
The present invention also provides the process tool of a species stage deep hole on building-block machine; Be used for of the processing of big hole length, comprise drilling macropore to the technological requirement degree of depth and form second step drill that aperture draws first step drill in hole and is used for drilling aperture to the technological requirement degree of depth greater than the ladder deep hole of little hole length; First step drill is through the location of the fairlead on the template, the macropore guide-localization that second step drill has been processed through first step drill; The length of the smaller diameter portion of first step drill is 15 to 20mm, is used for the processing that aperture draws the hole.
Wherein, chamfering is set for two of second step drill guiding ligament front ends and the rear end is not provided with relief angle, can make getting in the macropore smoothly and can not carry out secondary cutting to manufactured macropore than the major diameter part of second step drill.
Wherein, the width of two guiding ligaments is 2 to 2.5mm.
Wherein, second step drill than between major diameter part and the smaller diameter portion for arc transition is connected, can effectively avoid concentrated the fractureing of causing of stress.
Wherein, the helicoid of first step drill and second step drill is the parabola face, can effectively strengthen unbearable intensity and be convenient to chip removal.
Compared with prior art, the present invention has following beneficial effect:
Technology and process tool that big hole length of the present invention is processed on building-block machine greater than the ladder deep hole of little hole length; The aperture that has solved the ladder deep hole effectively bores problems such as inclined to one side, little drill bit fractures easily easily; Improve the crudy of product, reduced production cost.
Description of drawings
Fig. 1 is the drilling sketch map of first step drill in the processing technology of ladder deep hole of the present invention on building-block machine;
Fig. 2 is the drilling sketch map of second step drill in the processing technology of ladder deep hole of the present invention on building-block machine;
Fig. 3 is the local enlarged diagram of the present invention's second step drill;
Fig. 4 is that the A-A of Fig. 3 is to cutaway view.
In conjunction with the accompanying drawing following Reference numeral of mark above that:
The 1-workpiece to be processed, the 2-fairlead, the 3-template, 4-first step drill, the 5-extension bar, the 6-main shaft, the 7-main spindle box, 8-second step drill, 9-connects circular arc, 10-guiding ligament chamfering, the 11-ligament that leads.
The specific embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention does not receive the restriction of the specific embodiment.
Like Fig. 1, shown in 2, the processing method of ladder deep hole of the present invention on building-block machine adopts compound drilling to cut, and promptly earlier with the macropore of first step drill, 4 drillings ladder deep hole to be processed, forms aperture at the macropore front end simultaneously and draws the hole; Use second step drill, 8 drilling apertures then.First and second step drill is fixedly connected with main shaft 6 in the main spindle box 7 through extension bar 5 respectively.First step drill 4 suitable with the big bore dia of ladder deep hole to be processed than major diameter part; Be used to cut macropore; The hole diameter of the diameter of smaller diameter portion and ladder deep hole is suitable, and the length of smaller diameter portion is 15 to 25mm, is used to cut the hole of drawing of aperture; The diameter than the major diameter part of second step drill 8 is slightly less than big bore dia; Be used for when using second step drill, 8 cutting apertures, cutter being carried out guide-localization; The diameter and the hole diameter of the smaller diameter portion of second step drill 8 are suitable; Its length needs the technological requirement degree of depth greater than aperture; When cutting aperture to the technological requirement degree of depth, the end than the major diameter part of second step drill 8 can not contact with the ladder end face, thereby destroys the cascaded surface that has formed through 4 drillings of first step drill like this.Since second step drill 8 only play the guide-localization effect than major diameter part; And be not used in cutting; Therefore to 0.10mm, two guiding ligament front ends of second step drill 8 grind chamfering to its diameter than the big bore dia little 0.05 of ladder deep hole, and relief angle is not ground in the rear end; Article two, the width of guiding ligament 11 can be designed as 2 to 2.5mm, like Fig. 3, (show and connect circular arc 9 and guiding ligament 10) shown in Figure 4.
Processing method of the present invention specifically comprises the steps:
The aperture of ladder deep hole draws the about deeply 15mm～25mm of hole drill; Its aperture for step 2 processing ladder deep hole is done and is drawn the hole, and the aperture of ladder deep hole draws the hole and why can not bore too deeply, is because will bore dark smaller diameter portion that just must lengthening first step drill 4; And be with the location of the fairlead on the template during the first step drill drilling; If so first step drill 4 increases with the distance of fairlead 2 localization parts to the workpiece drilling surface when the long meeting of smaller diameter portion causes beginning drilling, thereby reduced the positioning accuracy of fairlead, occurred the inclined to one side phenomenon of brill easily; Relatively poor because of the rigidity of step drill smaller diameter portion in addition, fracture easily behind the lengthening.
Not partly not cutting of second step drill this moment than major diameter; As previously mentioned, its diameter is than the little 0.05mm～0.10mm of big bore dia of ladder deep hole, and its effect is the rigidity that guide-localization strengthens drill bit simultaneously; In order to make it successfully to import the macropore of ladder deep hole; Its two guiding ligament fronts must grind chamfering, do not allow to grind relief angle, and the width of two guiding ligaments is designed to 2mm～2.5mm; Simultaneously being connected with arc transition with the smaller diameter portion of second step drill 8 of second step drill 8, can effectively reduce this place's stress, prevent that the smaller diameter portion of second step drill 8 from fractureing from this than the major diameter part; For the position degree of the aperture that guarantees the ladder deep hole and with the axiality of the macropore of ladder deep hole, partly having greater than 15mm than major diameter of second step drill got into guide-localization in the macropore of ladder deep hole when the aperture that must guarantee the ladder deep hole began drilling; And when the aperture of ladder deep hole gets into the technological requirement degree of depth; Second step drill 8 can not connect with the ladder end face of the aperture of ladder deep hole than major diameter part (being targeting part) and touch (as previously mentioned; As long as the length of the smaller diameter portion of assurance second step drill is greater than little hole length), this must be noted that when the design step drill.
In order to strengthen unbearable intensity and to be convenient to chip removal, first step drill 4 that above-mentioned steps 1 and step 2 are used respectively and the helicoid of second step drill 8 all are designed and manufactured into the parabola face; In order to improve chip removal and cooling and lubricating, step 1 and step 2 are adding the mode that can adopt index(ing) feed man-hour.
In sum; Big hole length on building-block machine in the processing work 1 is following greater than the process of the ladder deep hole of little hole length: use first step drill 4 with 2 location of the fairlead on the template 3; The macropore and the aperture of the ladder deep hole in the drilling workpiece 1 draw the hole; Through behind the index(ing) feed repeatedly, the macropore of the ladder deep hole of workpiece 1 gets into the technological requirement degree of depth, and the aperture of the ladder deep hole in the workpiece 1 draws hole drill to dark 15mm～20mm; Use second step drill 8 to draw the hole as the aperture of guide-localization, ladder deep hole and be the basis with the macropore of the ladder deep hole in the workpiece of having processed 1; To the technological requirement degree of depth, so far accomplish the processing of whole ladder deep hole through the aperture of the ladder deep hole in the drilling workpiece 1 behind the index(ing) feed repeatedly.
Technology and process tool that big hole length of the present invention is processed on building-block machine greater than the ladder deep hole of little hole length; The aperture that has solved the ladder deep hole effectively bores problems such as inclined to one side, little drill bit fractures easily easily; Improve the crudy of product, reduced production cost.
More than disclosedly be merely a specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (9)
1. the processing method of a species stage deep hole on building-block machine is used for the processing of big hole length greater than the ladder deep hole of little hole length, it is characterized in that, comprises the steps:
Use first step drill with the location of the fairlead on the template, and drilling macropore to the technological requirement degree of depth; First step drill suitable with said big bore dia than major diameter part, the smaller diameter portion and the hole diameter of first step drill are suitable; And the length of the smaller diameter portion of first step drill is 15 to 25mm, makes the inboard corresponding aperture of length dimension that forms of macropore draw the hole;
Use second step drill to be guide-localization, and to draw the hole with said aperture be that basic drilling aperture is to the technological requirement degree of depth with the said macropore of processing; Said second step drill be divided into non-segment of cutting than large-diameter portion, its diameter is less than the said big bore dia of having processed, second step drill does not arrive the ladder end of said ladder deep hole yet than the major diameter part during said star drill to the technological requirement degree of depth.
2. the processing method of ladder deep hole according to claim 1 on building-block machine is characterized in that, said second step drill than the diameter of major diameter part than the said big bore dia of having processed little 0.05 to 0.10mm.
3. the processing method of ladder deep hole according to claim 1 and 2 on building-block machine; It is characterized in that; When the aperture of said ladder deep hole began drilling, the macropore that partly has length greater than 15mm to be positioned at the ladder deep hole than major diameter of second step drill was used for guide-localization.
4. the processing method of ladder deep hole according to claim 1 on building-block machine is characterized in that the drilling mode of said first step drill and second step drill is the index(ing) feed mode.
5. the process tool of a species stage deep hole on building-block machine; Be used for of the processing of big hole length greater than the ladder deep hole of little hole length; It is characterized in that, comprise drilling macropore to the technological requirement degree of depth and form second step drill that aperture draws first step drill in hole and is used for drilling aperture to the technological requirement degree of depth; Said first step drill is through the location of the fairlead on the template, the said macropore guide-localization that second step drill has been processed through first step drill; The length of the smaller diameter portion of said first step drill is 15 to 20mm, is used for the processing that aperture draws the hole.
6. the process tool of ladder deep hole according to claim 5 on building-block machine is characterized in that, chamfering is set two guiding ligament front ends of said second step drill and the rear end is not provided with relief angle.
7. the process tool of ladder deep hole according to claim 6 on building-block machine is characterized in that, the width of said two guiding ligaments is 2 to 2.5mm.
8. the process tool of ladder deep hole according to claim 5 on building-block machine is characterized in that, said second step drill than being connected for arc transition between major diameter part and the smaller diameter portion.
9. the process tool of ladder deep hole according to claim 5 on building-block machine is characterized in that the helicoid of said first step drill and second step drill is the parabola face.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010561165 CN102476200B (en) | 2010-11-23 | 2010-11-23 | Processing method and processing tool for step deep hole on combined machine tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010561165 CN102476200B (en) | 2010-11-23 | 2010-11-23 | Processing method and processing tool for step deep hole on combined machine tool |
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| CN102476200A true CN102476200A (en) | 2012-05-30 |
| CN102476200B CN102476200B (en) | 2013-10-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625142A (en) * | 2015-01-16 | 2015-05-20 | 哈尔滨飞机工业集团有限责任公司 | Method for machining deep hole |
| CN105345059A (en) * | 2015-12-16 | 2016-02-24 | 广西玉柴机器股份有限公司 | Machining method for chamfered deep holes |
| CN105562751A (en) * | 2014-11-03 | 2016-05-11 | Seb公司 | Process for drilling a tunnel in which to place a sensor in a cooking vessel and vessel created by said process |
| CN105945520A (en) * | 2016-05-26 | 2016-09-21 | 长治清华机械厂 | Cross hole system thin-wall special-shaped cylinder barrel inner hole machining method |
| CN106216727A (en) * | 2016-07-29 | 2016-12-14 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of multi-stage stairs throttle orifice method for turning |
| CN113798781A (en) * | 2020-06-15 | 2021-12-17 | 河南中岳非晶新型材料股份有限公司 | Machining process of air blowing guide pipe |
| CN114378325A (en) * | 2022-01-14 | 2022-04-22 | 一重集团大连核电石化有限公司 | Method for machining special-shaped deep hole in large workpiece |
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| CN112895239A (en) * | 2021-01-18 | 2021-06-04 | 山东玲珑机电有限公司 | Micro-pore mold processing method and micro-pore mold |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562751A (en) * | 2014-11-03 | 2016-05-11 | Seb公司 | Process for drilling a tunnel in which to place a sensor in a cooking vessel and vessel created by said process |
| CN105562751B (en) * | 2014-11-03 | 2019-05-10 | Seb公司 | Method for drilling out the storage channel for sensor in cooking container and cooking container from this method |
| CN104625142A (en) * | 2015-01-16 | 2015-05-20 | 哈尔滨飞机工业集团有限责任公司 | Method for machining deep hole |
| CN105345059A (en) * | 2015-12-16 | 2016-02-24 | 广西玉柴机器股份有限公司 | Machining method for chamfered deep holes |
| CN105945520A (en) * | 2016-05-26 | 2016-09-21 | 长治清华机械厂 | Cross hole system thin-wall special-shaped cylinder barrel inner hole machining method |
| CN106216727A (en) * | 2016-07-29 | 2016-12-14 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of multi-stage stairs throttle orifice method for turning |
| CN113798781A (en) * | 2020-06-15 | 2021-12-17 | 河南中岳非晶新型材料股份有限公司 | Machining process of air blowing guide pipe |
| CN114378325A (en) * | 2022-01-14 | 2022-04-22 | 一重集团大连核电石化有限公司 | Method for machining special-shaped deep hole in large workpiece |
| CN114378325B (en) * | 2022-01-14 | 2023-07-04 | 一重集团大连核电石化有限公司 | Method for machining special-shaped deep holes in large-sized workpiece |
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| CN102476200B (en) | 2013-10-02 |
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