CN208495863U - A kind of long deep hole drilling apparatus of piston rod high-precision - Google Patents
A kind of long deep hole drilling apparatus of piston rod high-precision Download PDFInfo
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- CN208495863U CN208495863U CN201721473793.4U CN201721473793U CN208495863U CN 208495863 U CN208495863 U CN 208495863U CN 201721473793 U CN201721473793 U CN 201721473793U CN 208495863 U CN208495863 U CN 208495863U
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- piston rod
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Abstract
The utility model belongs to technology field, more particularly to a kind of long deep hole drilling apparatus of piston rod high-precision, including left end position portion (1), right end position portion (3), long-cutter holder (4) and transmission device (5), cutter head (6).In utility model device, piston rod passes through left end position portion and the full freedom degree Set and Positioning of right end position portion；Cutter head is connect with long-cutter holder by accurate thread, and long-cutter holder is connect with transmission device.The utility model is able to solve the problems such as long deep hole machining surface quality of piston rod is poor, hardly possible is cooling, difficult chip removal.
Description
Technical field
The utility model belongs to technology field, and in particular to a kind of long deep hole machining dress of piston rod high-precision
It sets.
Background technique
Long deep hole piston rod is space flight function part important in certain mechanism in high precision, passes through two chamber of piston rod in work
Oil pressure it is poor, realize piston rod alternate reciprocating motion, while piston rod is important stress part and dynamic sealing part, bore area
It is required that QPQ is handled, shape and hole size precision height, Geometrical Tolerance Principle are tight, and long deep hole machining difficulty is big with high precision especially.
The important machining element of big major diameter piston rod is as shown in Figure 1.
565.5 ± 0.2mm of long deep hole piston pole length, diameter of bore in high precisionDraw ratio about 18.2:1, it is long
Diameter is higher than big and every designing technique index request, and long deep hole and non through hole, it is necessary to be processed at least twice, lead to this
It the big major diameter piston rod inner hole cylindricity of high-precision and being dramatically increased with the concentricity difficulty of processing of outer circle, processing is not easy to guarantee, and
These dimension overproofs will influence whether the performance of product, also be affected to the postorder inner hole QPQ processing that product drawing requires.
The processing of long deep hole is the processing emphasis of piston component of rod category in high precision, with following processing features:
1) knife bar is limited by aperture, and diameter is small, length is big, causes poor rigidity, intensity low, when cutting be also easy to produce vibration,
Ripple, taper, to influence the straightness and surface roughness of deep hole；
2) in drilling and reaming, cooling-lubricant is not in the case where using special device, it is difficult to be input to cutting
Area reduces tool life, and chip removal is also difficult；
3) in the process of deep hole, Tool in Cutting situation cannot be directly observed, cutting can only be listened by working experience
When sound, see that chip, hand touch vibration and workpiece temperature, see instrument, to judge whether cutting process normal；
4) chip removal is difficult, it is necessary to carry out the length and shape of short bits and control cutting, using reliable means with benefit
It is excluded in smooth, prevents chip from blocking.
5) in order to guarantee that deep hole goes on smoothly in process and reach the processing quality of corresponding requirements, cutter should be increased
Interior (or outer) chip removal device, cutter guidance and supporting arrangement and high pressure cooling and lubricating device.
6) cutter radiating condition is poor, and cutting temperature increases, and reduces cutting wear.
Summary of the invention
The technical issues of the utility model solves: the utility model provides a kind of long deep hole machining dress of piston rod high-precision
It sets, is able to solve the problems such as long deep hole machining surface quality of piston rod is poor, hardly possible is cooling, difficult chip removal.
The technical solution adopted in the utility model:
A kind of long deep hole drilling apparatus of piston rod high-precision, including left end position portion, right end position portion, long-cutter holder,
With transmission device, cutter head；Piston rod passes through left end position portion and the full freedom degree Set and Positioning of right end position portion；Cutter head and length
Knife handle is connected by accurate thread, and long-cutter holder is connect with transmission device.
The left end position portion includes chuck, radial positioning can be carried out to piston rod, among the position portion of left end
Through-hole, through-hole diameter are less than piston rod outer circle, carry out axially position to piston rod, while the through-hole of left end position portion is being processed
Be conducive to leaning out for chip removal and cutter head when piston rod through-hole.
The right end position portion clamps conical surface positioning disk after being, carries out axially position to piston rod, can also be right after clamping
Piston rod carries out radial weak fix, and right end position portion intermediate throughholes are passed through convenient for long-cutter holder and cutter head and grown to piston rod
Deep hole machining is equipped with nozzle opening in the right end position portion conical surface and through-hole intersection, and oil spout aperture direction is perpendicular to the conical surface, favorably
Long deep hole is entered to piston rod process in cutter head in cooling oil and carries out cooling and lubricating.
The cutter head and the equal central through hole of long-cutter holder, cutter head front end are provided with chip removal entrance, and long-cutter holder tail end is provided with chip removal and goes out
Mouthful.
A kind of long deep hole processing method of piston rod high-precision, includes the following steps:
Step 1: formulating reasonable piston rod machining global schema；Step 2: the long deep hole of solidification piston rod high-precision adds
Work parameter；Step 3: the fixed long deep hole machining operating method of high-precision.
In the step 1, key procedure includes the roughing of the long deep hole of high-precision, finishing process；Roughing are as follows: long deep
Hole processing device simultaneous manufacturingThrough-hole；Finishing are as follows: long deep hole drilling apparatus simultaneous manufacturing non through holeIt pressesSurface roughness Ra 1.6, and outer circle bounce 0.03, and be furnished with honing process, it is final guarantee it is long deep
Pore size and Geometrical Tolerance Principle.
In the step 2, determines processing through-hole and process the total revolving speed, chuck revolving speed, knife bar revolving speed, feeding of non through hole
Speed.
In the step 3, include the following steps: that preparation before the inputs of machined parameters, clamping, the clamping of part are fixed
Position, processing, scheduling transhipment.
The utility model has the beneficial effects that
A kind of long deep hole drilling apparatus of piston rod high-precision provided by the utility model, is able to solve the long deep hole of piston rod and adds
The problems such as work difficulty is big, quality not can guarantee, surface quality is poor, hardly possible is cooling, difficult chip removal.
Detailed description of the invention
Fig. 1 is big major diameter piston rod construction schematic diagram in the prior art；
Fig. 2 is a kind of long deep hole drilling apparatus structural schematic diagram of piston rod high-precision provided by the utility model；
Fig. 3 is cutter head and long-cutter holder connection schematic diagram；
In figure: the left end 1- position portion, 2- piston rod, 3- right end position portion, 4- long-cutter holder, 5- transmission device, 6- knife
Head, 7- chip removal entrance, 8- chip removal outlet.
Specific embodiment
In the following with reference to the drawings and specific embodiments to a kind of long deep hole machining of piston rod high-precision provided by the utility model
Device is described in further detail.
As shown in Fig. 2, a kind of long deep hole drilling apparatus of piston rod high-precision provided by the utility model, including left end positioning
Part 1, right end position portion 3, long-cutter holder 4 and transmission device 5, cutter head 6；Piston rod 2 passes through left end position portion 1 and right end
The full freedom degree Set and Positioning of position portion 3；Left end position portion 1 includes chuck, can carry out radial positioning to piston rod 2,
1 intermediate throughholes of left end position portion, through-hole diameter are less than 2 outer circle of piston rod, carry out axially position, while left end to piston rod 2
The through-hole of position portion 1 is conducive to leaning out for chip removal and cutter head 6 in machining piston 2 through-hole of bar；Right end position portion 3 is pressed from both sides after being
Tight conical surface positioning disk carries out axially position to piston rod 2, can also carry out radial weak fix, right end positioning after clamping to piston rod 2
3 intermediate throughholes of part pass through convenient for long-cutter holder 4 and cutter head 6 and carry out long deep hole machining to piston rod, bore in right end position portion 3
Face and through-hole intersection are equipped with nozzle opening, and oil spout aperture direction is conducive to cooling oil and adds in cutter head to piston rod perpendicular to the conical surface
Work process enters long deep hole and carries out cooling and lubricating；
As shown in figure 3, cutter head 6 is connect with long-cutter holder 4 by accurate thread, guarantee cutter head 6 and long-cutter holder 4 processed
Straightness in journey.Cutter head 6 and the equal central through hole of long-cutter holder 4,6 front end of cutter head are provided with chip removal entrance 7, and 4 tail end of long-cutter holder is provided with
Chip removal outlet 8, in process, with the extruding of machining area and the impact of cooling oil, chip and cooling oil can be from chip removals
Entrance 7 enters, from 8 discharge of chip removal outlet；Long-cutter holder 4 is connect with transmission device 5.
A kind of long deep hole processing method of piston rod high-precision provided by the utility model, includes the following steps:
Step 1: formulating reasonable piston rod machining global schema；
Global schema is as shown in the table:
1 piston rod of table is machined global schema
Process above route has the following characteristics that
(1) technique is concise, clear thinking.The piston rod processing technology is simple and clear, totally 25 sequences, ten descriptions of the process, most
Refinement is optimized to big degree to technique, it then follows roughing is combined with finishing, interior hole machined is mutually tied with Excircle machining
The principle of conjunction is formulated, and the operability and directiveness when enhancing is processed ensure that processing quality.
(2) inner hole quality, it is particularly important.14 mills and 21 mill sequences in process route, be respectively carry out to foreign round half fine grinding and
The processing of fine grinding finally makes outer circle reach the final processing dimension before QPQ processing, and processing method is the positioning of inner hole punching axis, because
The processing quality of this piston rod outer circle is heavily dependent on the processing quality of inner hole, highlights the long deep hole machining of high-precision and exists
Importance in entire piston rod process.
(3) process optimization improves quality.The non-clear opening of long for piston rod deep hole and the characteristics of draw ratio 18.2:1, benefit
With BTA deep hole drilling machine, 28 through-hole of φ, right end are only successively carried outNon through hole (By) processing (5 vehicles and 10
Vehicle sequence), turner vehicle left end screw thread M30 × 1-6H is subsequent to be equipped with the small amount of the going amendment inner hole of honing (manual operation, technology maturation),
The processing that the long deep hole of high-precision can be completed, ensure that the requirement of hole size and surface roughness.The segmentation of analogy tradition both ends
Processing and processing quality the case where not can guarantee, this process route substantially reduces the process-cycle and improves the one of processing quality
Cause property.
(4) timeliness is set, de-stress is gone.In entire process route, formulate 6 and 12 sequences totally two sequences as aging sequence,
After being separately positioned on 28 through-hole of φ processing (whole removing amount maximum), non through holeIt pressesProcessing (finishing
Before), that is, can guarantee will not excessively accumulate machining stress inside in any sequence material of process is discharged in time, is also protected
Completely removing stress before having demonstrate,proved finishing prevents from deforming.Technique requires a manufacturing procedure uniformly small amount of going, stabilizing material tissue
With size, guarantee precision.
(5) machining allowance, reasonable disposition.The processing of piston rod is divided into roughing, semifinishing and essence from process flow
Processing, in long deep holeThere are reasonable machining allowance in the process of outer circle φ 38 ± 0.5.Machining allowance
Determination, directly influence the machining accuracy of geometric tolerance；Machining allowance is excessive, will affect processing efficiency, causes size unstable
It is fixed or overproof；Machining allowance is too small, not can guarantee geometric tolerance precision peace surface roughness.
Step 2: the long deep hole machining parameter of solidification piston rod high-precision；
According to the long device for Deep Hole process principle of piston rod and chip removal principle, the knife inputted is needed to the long deep hole machining of piston rod
Bar revolving speed and feed speed the two Machine-settings are probed into, and knife bar revolving speed influences long deep hole inner surface processing quality,
And feed speed then determines long deep hole machining speed.It is chosen and is combined with test by theoretical research, solidification piston rod is high-precision
Long deep hole machining parameter is spent, so that higher passing rate of processing and preferable inner hole processing quality are obtained, the long deep hole of high-precision
Machined parameters are as shown in the table:
The 2 long deep hole machining parameter of high-precision of table
Step 3: the fixed long deep hole machining operating method of high-precision；
By choosing process in the test of the long deep hole machining parameter of high-precision, the utility model, which solves many needs, to be caused
The relevant issues such as the clamping, processing, the operation that pay attention to.Under the guidance of piston rod part machinery processing technology global schema, to piston
Long this processing emphasis of deep hole of bar high-precision, difficult point carry out conscientious summary and induction, are as follows:
The 3 long deep hole machining operating method of high-precision of table.
Claims (4)
1. a kind of long deep hole drilling apparatus of piston rod high-precision, it is characterised in that: positioned including left end position portion (1), right end
Partially (3), long-cutter holder (4) and transmission device (5), cutter head (6)；Piston rod (2) is fixed by left end position portion (1) and right end
The full freedom degree Set and Positioning of bit position (3)；Cutter head (6) is connect with long-cutter holder (4) by accurate thread, long-cutter holder (4) and transmission
Device (5) connection.
2. a kind of long deep hole drilling apparatus of piston rod high-precision according to claim 1, it is characterised in that: the left end is fixed
Bit position (1) includes chuck, can carry out radial positioning, left end position portion (1) intermediate throughholes, through-hole to piston rod (2)
Diameter is less than piston rod (2) outer circle, carries out axially position to piston rod (2), while the through-hole of left end position portion (1) is being processed
Be conducive to leaning out for chip removal and cutter head (6) when piston rod (2) through-hole.
3. a kind of long deep hole drilling apparatus of piston rod high-precision according to claim 1, it is characterised in that: the right end is fixed
Bit position (3) clamps conical surface positioning disk after being, carries out axially position to piston rod (2), can also carry out to piston rod (2) after clamping
Radial weak fix, right end position portion (3) intermediate throughholes pass through convenient for long-cutter holder (4) and cutter head (6) and carry out length deeply to piston rod
Hole machined is equipped with nozzle opening in right end position portion (3) conical surface and through-hole intersection, and oil spout aperture direction has perpendicular to the conical surface
Long deep hole is entered to piston rod process in cutter head conducive to cooling oil and carries out cooling and lubricating.
4. a kind of long deep hole drilling apparatus of piston rod high-precision according to claim 1, it is characterised in that: the cutter head
(6) it is provided with chip removal entrance (7) with long-cutter holder (4) equal central through hole, cutter head (6) front end, long-cutter holder (4) tail end is provided with chip removal outlet
(8)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473793.4U CN208495863U (en) | 2017-11-07 | 2017-11-07 | A kind of long deep hole drilling apparatus of piston rod high-precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473793.4U CN208495863U (en) | 2017-11-07 | 2017-11-07 | A kind of long deep hole drilling apparatus of piston rod high-precision |
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| Publication Number | Publication Date |
|---|---|
| CN208495863U true CN208495863U (en) | 2019-02-15 |
Family
ID=65302155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721473793.4U Active CN208495863U (en) | 2017-11-07 | 2017-11-07 | A kind of long deep hole drilling apparatus of piston rod high-precision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746481A (en) * | 2017-11-07 | 2019-05-14 | 北京实验工厂 | A kind of long deep hole drilling apparatus of piston rod high-precision and processing method |
| CN112091288A (en) * | 2020-07-27 | 2020-12-18 | 北京实验工厂有限责任公司 | Lengthened twist drill for processing elongated hole |
-
2017
- 2017-11-07 CN CN201721473793.4U patent/CN208495863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746481A (en) * | 2017-11-07 | 2019-05-14 | 北京实验工厂 | A kind of long deep hole drilling apparatus of piston rod high-precision and processing method |
| CN112091288A (en) * | 2020-07-27 | 2020-12-18 | 北京实验工厂有限责任公司 | Lengthened twist drill for processing elongated hole |
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