CN103240434A - Improved process for machining crankshaft oblique oil hole - Google Patents
Improved process for machining crankshaft oblique oil hole Download PDFInfo
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- CN103240434A CN103240434A CN 201210022193 CN201210022193A CN103240434A CN 103240434 A CN103240434 A CN 103240434A CN 201210022193 CN201210022193 CN 201210022193 CN 201210022193 A CN201210022193 A CN 201210022193A CN 103240434 A CN103240434 A CN 103240434A
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- chamfering
- oil hole
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Abstract
The invention provides an improved process for machining a crankshaft oblique oil hole. The improved process includes: firstly a stepwise centering chamfering drill is used for machining a tapered blind hole at the corresponding position on a cylindrical surface of a crankshaft, and then an ordinary gun drill performs machining of the crankshaft oblique oil hole through a lead hole provided by the tapered blind hole. The improved process enables a machining method which drills first and then chamfers in a traditional process to be changed, service life of the ordinary gun drill is one time of that of a special gun drill, using effects of the ordinary gun drill and the special gun drill before coping and after coping have no difference, and therefore the improved process for machining the crankshaft oblique oil hole can reduce cost consumption of cutters greatly, is safe and reliable, and has great popularization value.
Description
Technical field
The invention belongs to field of machining, relate to a kind of improvement technology of processing automobile engine crankshaft inclined oil hole of air.
Background technology
At present, each automobile engine crankshaft processing specialized factory mostly adopts special drill gun to process in the crankshaft oblique oil hole process both at home and abroad, according to the drawing requirement, after this hole processes, do a chamfering with rose reamer in the top edges in this hole again, like this, inclined oil hole of air has just machined.Because the position of inclined oil hole of air is more special, what the tip that adding needs drill gun man-hour at first contacted is the periphery of workpiece, but also want and should the surface radially form about about 50 ° angle.Therefore, difficulty is sizable.
In order to finish the deep hole machining that this has great difficulty, traditional process using a kind of special drill gun, the apex point of this drill gun partly do unusual taper, and secondary blade divides and also will leave certain vacancy, draws the hole needs in the time of could satisfying deep hole machining like this.The tip sword type of this special drill gun is very complicated, is to make or reconditioning all has very big difficulty.
Therefore, there is following drawback in traditional handicraft:
1. though because this special drill gun can satisfy the needs that draw the hole, because wearing and tearing especially easily, service life is very short.
2. the tip sword type of this special drill gun is very complicated, and the difficulty of reconditioning is very big.And the drill gun after the reconditioning, 1/4th before no more than the reconditioning of the quantity of its workpiece.
3. special drill gun can only reconditioning 4 times, wastes very big.
In sum, existing crankshaft oblique oil hole processing technology has improved necessity.Carry out new technology.
Summary of the invention
The object of the present invention is to provide a kind of improvement technology of processing automobile engine crankshaft inclined oil hole of air.Both used a kind of novel staged centering chamfering brill instead and drawn the hole and finish chamfering at the periphery in bearing shell footpath earlier, and then drawn the hole with common drill gun through this and carry out inclined oil hole of air processing.Because service life of common drill gun is one times of special drill gun service life, and before the reconditioning with reconditioning after the few of difference of result of use, therefore, adopt this processes crankshaft oblique oil hole greatly senior general hang down the cost consumption of cutter.
Because new technology is just changed drilling operating and the chamfering process of original technology, having used original rose reamer instead staged centering chamfering bores, its processing mode without any change, do not increase any new operation yet, therefore, be very easy to operation, can reduce the cost consumption of cutter greatly.
This process safety is reliable, and great promotional value is arranged.
The technical solution used in the present invention:
The invention provides a kind of improvement technology of processing automobile engine crankshaft inclined oil hole of air.Both used a kind of staged centering chamfering brill instead and drawn the hole and finish chamfering at the periphery of workpiece in advance, and then drawn the hole with common drill gun through this and carry out inclined oil hole of air processing.
The sword type that described staged centering chamfering is bored is made up of centering sword and chamfering blades.Can finish the heart accurately and effectively, draw the technological requirement of hole and chamfering.
Described staged centering chamfering has formed a tapered blind hole after boring and machining on the surface of workpiece, the wedge angle part of this blind hole can be the tip centering of common drill gun just, therefore, and for the use of common drill gun provides abundant and necessary condition.
Described new technology of the present invention is just changed drilling operating and the chamfering process of original technology, used original rose reamer instead staged centering chamfering and bored, its processing mode without any change, do not increase any new operation yet,
Be a times of special drill gun service life the service life of described common drill gun, and before the reconditioning with reconditioning after the few of difference of result of use, therefore, adopt this processes crankshaft oblique oil hole greatly senior general hang down the cost consumption of cutter.This process safety is reliable, and great promotional value is arranged.
The present invention has following actively useful effect:
1. the special drill gun that uses in the just original processing technology of the present invention should all can reduce greatly for manufacturing and the reconditioning difficulty of common its drill gun of drill gun:
2. it is improved with the rose reamer that uses in original technology that the present invention adopts the centering chamfering to bore, and can not increase expense.
3. new technology of the present invention is just changed drilling operating and the chamfering process of original technology, having used original rose reamer instead staged centering chamfering bores, its processing mode without any change, do not increase any new operation yet, can not bring any difficulty to process.
4. common drill gun of the present invention is a times of special drill gun service life its service life, and before the reconditioning with reconditioning after the few of difference of result of use, therefore, adopt this processes crankshaft oblique oil hole greatly senior general hang down the cost consumption of cutter.The worker.
5. this process safety is reliable, and great promotional value is arranged.
Description of drawings
Fig. 1 improves back processes schematic diagram
Fig. 2 is original processing technology schematic diagram:
The specific embodiment
Consult shown in Figure 2ly, what this figure showed is original processing technology, earlier with special drill gun 4 at deep hole of the upper end of bent axle body 3 processing, and then carry out chamfering with chamfering brill 5 in the end of deep hole.Because bent axle body 3 be column type, and drill gun also will tilt 50 ° to pierce, and like this, in order to draw the needs in hole, just must be finished by the special drill gun of being with wedge angle.Because this special drill gun blade is very sharp, therefore when boring, be very easy to wearing and tearing, and this special drill gun reconditioning is also very difficult, repeat the number of times of reconditioning again seldom.Therefore, waste is very big.
Consult shown in Figure 1ly, this figure shows is processing technology after improving.Comprise: staged centering chamfering brill 1, bent axle body 3, common drill gun 2.Concrete grammar is: change first order of original technology into second order, second order changes first order into.Both bored 1 in tapered blind hole of the upper end of bent axle body 3 processing with staged centering chamfering earlier, this tapered blind hole has two effects, first effect is to have finished the desired chamfer shape of crankshaft oblique oil hole and size, and second effect is that the processing to drill gun provides one to draw hole (centre bore).Can provide good centering effect for drill gun processing because this draws hole (centre bore), this just provides the condition of abundant necessity for the use of common drill gun 2, and therefore, the processing of the oblique oily deep hole of bent axle just might have been processed with common drill gun fully
Clearly, the embodiment among the present invention and the description of accompanying drawing are understood the present invention just to better, to the not significantly restriction of protection domain of claim.Those skilled in the art make simple adjustment or improvement to accompanying drawing and above-described embodiment after reading, still in the protection domain of following claim.
Claims (2)
1. the processing technology of the crankshaft oblique oil hole after the improvement, content comprises: the tapered blind hole of relevant position processing that is drilled in the periphery of bent axle earlier with staged centering chamfering, and then draw the processing that crankshaft oblique oil hole is carried out in the hole with common drill gun through what this tapered blind hole provided, the important document that this technology relates to has three:
Staged centering chamfering is bored (1), common drill gun (2), bent axle body (3),
Described staged centering chamfering is bored (1), it is characterized in that: its blade has two-layer angle, the ground floor angle is in the tip, this angle provides the centering effect in the time of being drilled in processing column type workpiece surperficial for chamfering, second layer angle and ground floor are adjacent, and the shape of this angle conforms to the size and shape that drawing requires.
2. the crankshaft oblique oil hole processing technology after the improvement according to claim 1, it is characterized in that: when staged centering chamfering is bored (1) after tapered blind hole of the relevant position of the periphery (3) of bent axle processing, the processing of the oblique oily deep hole of bent axle is finished in common drill gun (2) hole centered by the tip of this tapered blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210022193 CN103240434A (en) | 2012-02-01 | 2012-02-01 | Improved process for machining crankshaft oblique oil hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210022193 CN103240434A (en) | 2012-02-01 | 2012-02-01 | Improved process for machining crankshaft oblique oil hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103240434A true CN103240434A (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210022193 Pending CN103240434A (en) | 2012-02-01 | 2012-02-01 | Improved process for machining crankshaft oblique oil hole |
Country Status (1)
| Country | Link |
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| CN (1) | CN103240434A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368847A (en) * | 2014-11-07 | 2015-02-25 | 广西玉柴机器股份有限公司 | Cylinder body inclined hole machining cutter clamp and method thereof |
| CN106181273A (en) * | 2016-07-19 | 2016-12-07 | 天润曲轴股份有限公司 | A kind of processing method of high torsional fatigue strength bent axle |
-
2012
- 2012-02-01 CN CN 201210022193 patent/CN103240434A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368847A (en) * | 2014-11-07 | 2015-02-25 | 广西玉柴机器股份有限公司 | Cylinder body inclined hole machining cutter clamp and method thereof |
| CN106181273A (en) * | 2016-07-19 | 2016-12-07 | 天润曲轴股份有限公司 | A kind of processing method of high torsional fatigue strength bent axle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Li Lijun Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130814 |