CN108188667A - Processing method is accurately positioned in die casting core-drawing hole - Google Patents
Processing method is accurately positioned in die casting core-drawing hole Download PDFInfo
- Publication number
- CN108188667A CN108188667A CN201810079794.3A CN201810079794A CN108188667A CN 108188667 A CN108188667 A CN 108188667A CN 201810079794 A CN201810079794 A CN 201810079794A CN 108188667 A CN108188667 A CN 108188667A
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- China
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- hole
- convex block
- die casting
- drill bit
- locating convex
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- 238000004512 die casting Methods 0.000 title claims abstract description 35
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims description 20
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 claims description 15
- 230000013011 mating Effects 0.000 claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The present invention relates to die casting manufacture fields, disclose a kind of die casting core-drawing hole and processing method is accurately positioned, include the following steps：(1) die casting positioning burr；(2) preliminary cleaning；(3) it just positions；(4) secondary positioning；(5) reaming and secondary cleaning；(6) chamfering.The cooperation of the first locating convex block and positioning burr that this programme passes through drill bit, which is realized, just to be positioned, improve the precision of core pulling hole machined, secondary positioning is realized by the cooperation of the second locating convex block of drill bit and screw rod again, the precision of core pulling hole machined is further improved, so as to improve the processing quality of die casting.
Description
Technical field
The invention belongs to die casting manufacture fields.
Background technology
Die casting is a kind of part of compression casting, is widely used in manufacturing industry.As domestic manufacturing equipment industry is sent out
Horizontal continuous improvement is opened up, the requirement on machining accuracy of die casting is also higher and higher.Part die casting is taken out in die casting
Core needs to process the first hole formed during die casting once again after die casting is completed, to form the core-drawing hole for being suitble to assembling.It is existing
Core pulling hole forming method be largely that directly first hole is processed by the cooperation of drill bit and motor, the position in drill bit and first hole
It puts and is difficult to accurately position so that cutting edge is not quite similar to the cutting output at each position in first hole, leads to the pumping processed
Core bore deviation rate is larger, greatly reduces the precision of core pulling hole machined, reduces the processing quality of die casting.
Invention content
The purpose of the present invention is to provide a kind of die casting core-drawing holes to be accurately positioned processing method, to solve in background technology
The problem of core-drawing hole machining accuracy is not high.
In order to achieve the above object, base case of the invention provides die casting core-drawing hole and processing method, packet is accurately positioned
Include following steps：
(1) die casting positioning burr：Die casting precasts positioning burr in die casting in the end in first hole, forms band positioning hair
The first hole of thorn；
(2) preliminary cleaning：Screw rod is inserted into just hole, first hole is tentatively cleared up；The screw rod includes bar portion
With the spire to offset with first hole inner wall, one end of the bar portion is machined with mating groove, and the spire is spirally wound on bar portion
On；
(3) it just positions：Drill bit is placed into just bore ends, the first locating convex block and positioning burr for making drill bit offset, real
Now just position；The drill bit is connected with motor, and drill bit includes forepart, cutting portion and shank, and the forepart is fixed with the first positioning
Convex block and the second locating convex block, first locating convex block are matched with positioning burr, second locating convex block and mating groove
It is adapted；Cutting edge is fixed on the cutting portion, the first chamfering blades, the shank are fixed between the cutting portion and shank
Switch for controlling motor is installed close to the end of the first chamfering blades；
(4) secondary positioning：Screw rod is pushed, the mating groove of screw rod and the second locating convex block of drill bit is made to offset, is realized
Secondary positioning；
(5) reaming and secondary cleaning：Drill bit is driven to rotate by motor, the cutting edge on drill bit carries out reaming to first hole,
And positioning burr is machined away during reaming, and then form smart hole；Drill bit can push screw rod side to rotate when promoting
While drilling out just hole, screw rod makes the clast that reaming generates be discharged to outside just hole along spire；
(6) chamfering：After drill bit completes reaming, screw rod is completely pushed out of, and the first chamfering blades on drill bit can be to essence at this time
The one end in hole carries out chamfering；When switch is triggered by the end of core-drawing hole, motor is stopped, and the first chamfering blades complete chamfering,
So as to form core-drawing hole.
The principle and advantageous effect of this base case are：
(1) cooperation of the first locating convex block and positioning burr that this programme passes through drill bit, which is realized, just positions, and improves core pulling
Secondary positioning is realized in the precision of hole machined, then the cooperation for the second locating convex block and screw rod for passing through drill bit, is further improved
The precision of core pulling hole machined；
(2) screw rod can tentatively clear up first hole when being inserted into just hole, and clast product being attached in first hole is released,
It prevents clast from influencing the machining accuracy of core-drawing hole, further improves the machining accuracy of core-drawing hole；
(3) screw feed mechanism is collectively formed by the cooperation with first hole during being rotated with drill bit in screw rod, will
The first hole of clast discharge that cutting edge generates in reaming procedure, prevents clast from influencing the machining accuracy of core-drawing hole, further carries
The high machining accuracy of core-drawing hole；
(4) screw rod can play guiding role during being moved with drill bit to drill bit, and drill bit is prevented to be advanced over
Deviation is generated in journey, further improves the machining accuracy of core-drawing hole；
(5) switch of this programme can offset and be triggered with the end of core-drawing hole when the first chamfering blades complete chamfering, from
And motor is controlled to be stopped, prevent core pulling Hole chamfering excessive；
(6) this programme precasts positioning burr in die casting, simple in structure to realize the first positioning of core pulling hole machined,
Cost is relatively low, and again can machine away positioning burr when carrying out reaming to first hole, does not influence the formation of core-drawing hole.
Scheme two：This is the preferred of basic scheme, and third time clast cleaning is carried out afterwards in step (5), will be broken in smart hole
Bits are cleaned out.The clast generated in smart hole is cleared up, can prevent clast from generating bad shadow to the machining accuracy of core-drawing hole
It rings, improves the machining accuracy of core-drawing hole.
Scheme three：This is the preferred of basic scheme, after step (6), using with the matched chamfering of the second locating convex block
Bar carries out chamfering to the other end of core-drawing hole.Some core-drawing holes need to carry out chamfering to its both ends, and by this step, people can root
Chamfering is carried out according to the both ends to core-drawing hole are needed.
Scheme four：This is preferred for scheme three, and the chamfering bar includes the second chamfering blades and matches with the second locating convex block
The aligned portions of conjunction.Chamfering can be carried out to the other end of core-drawing hole by the cooperation of the second chamfering blades and aligned portions.
Scheme five：This is the preferred of basic scheme, and step (3) middle front part is fixed with four piece of first locating convex block, and
Four piece of first locating convex block is uniformly distributed along the circumferential direction of forepart.Four piece of first locating convex block mutually forms cross, forms cross
First locating convex block of shape and the fitment stability for positioning burr are stronger, so as to improve the precision of core pulling hole machined.
Scheme six：This is the preferred of basic scheme, and step (3) middle front part is fixed with four piece of second locating convex block, and
Four piece of second locating convex block is uniformly distributed along the circumferential direction of forepart.Four piece of second locating convex block mutually forms cross, forms cross
Second locating convex block of shape and the fitment stability of screw rod are stronger, so as to improve the precision of core pulling hole machined, are also prevented from drill bit
Deviation is generated during the work time.
Description of the drawings
Fig. 1 is that the just structure diagram in hole is accurately positioned in processing method in die casting core-drawing hole of the present invention；
Fig. 2 is the structure diagram of drill bit；
Fig. 3 is the enlarged drawing of A in Fig. 2；
Fig. 4 is the structure diagram of screw rod；
Fig. 5 is the structure diagram of chamfering bar.
Specific embodiment
Below by the further details of explanation of specific embodiment：
Reference numeral in Figure of description includes：Die casting 1, first hole 2, positioning burr 3, forepart 4, the first locating convex block
5th, the second locating convex block 6, cutting portion 7, cutting edge 8, shank 9, the 10, first chamfering blades 11 of switch, bar portion 12, spire 13, the
Two chamfering blades 14, aligned portions 15.
Embodiment：
Processing method is accurately positioned in die casting core-drawing hole, includes the following steps：
(1) die casting positioning burr 3：As shown in Figure 1, die casting precasts positioning hair in die casting in the end in first hole 2
Thorn 3 forms the first hole 2 with positioning burr 3.
(2) preliminary cleaning：Screw rod is inserted into just hole 2, first hole 2 is tentatively cleared up.Wherein, as shown in Figure 4,
Screw rod is mainly made of bar portion 12 and spire 13, and one end of bar portion 12 is machined with mating groove, spire 13 and first 2 inner wall of hole
It offsets, 13 spiral winding of spire is over stem 12.
(3) it just positions：Drill bit is placed into just 2 end of hole, the first locating convex block 5 and positioning burr 3 for making drill bit offset,
It realizes and just positions.Wherein, as shown in attached drawing 2 and attached drawing 3, drill bit is connected with motor, and drill bit includes forepart 4, cutting portion 7 and shank
9, it is uniformly distributed in the circumferential direction of forepart 4 and is fixed with four piece of first locating convex block 5 and four piece of second locating convex block 6, the first convex
Block 5 is matched with positioning burr 3, and the second locating convex block 6 is adapted with mating groove, and the height of the second locating convex block 6 is less than the
One locating convex block 5；Cutting edge 8 is fixed on cutting portion 7, the first chamfering blades 11, shank 9 are fixed between cutting portion 7 and shank 9
Switch 10 for controlling motor is installed close to the end of the first chamfering blades 11.Four piece of first locating convex block 5 and four piece second
The each self-forming cross of locating convex block 6 forms criss-cross first locating convex block 5 with positioning the fitment stability of burr 3 more
By force, so as to improve the precision of core pulling hole machined；Form the fitment stability of criss-cross second locating convex block 6 and screw rod more
By force, it so as to improve the precision of core pulling hole machined, is also prevented from drill bit and generates deviation during the work time.
(4) secondary positioning：Screw rod is pushed, the mating groove of screw rod and the second locating convex block 6 of drill bit is made to offset, is realized
Secondary positioning.
(5) reaming and secondary cleaning：Drill bit is driven to rotate by motor, the cutting edge 8 on drill bit expands first hole 2
Hole, and machine away positioning burr 3 during reaming, and then form smart hole；Drill bit can push screw rod side when promoting
Just hole 2 is produced on rotation side, and screw rod makes the clast that reaming generates be discharged to outside just hole 2 along spire 13.
(6) third time clast cleaning is carried out, the clast in smart hole is cleaned out, prevents processing essence of the clast to core-drawing hole
Degree generates harmful effect, improves the machining accuracy of core-drawing hole.
(7) chamfering：After drill bit completes reaming, screw rod is completely pushed out of, at this time the first chamfering blades 11 meeting pair on drill bit
The one end in smart hole carries out chamfering；When switch 10 is triggered by the end of core-drawing hole, motor is stopped, and the first chamfering blades 11 are completed
Chamfering, so as to form core-drawing hole.
(8) chamfering is carried out to the other end of core-drawing hole using with 6 matched chamfering bar of the second locating convex block.Such as attached drawing 5
Shown, chamfering bar is mainly made of the second chamfering blades 14 and aligned portions 15, and the second chamfering blades 14 are used for the other end to core-drawing hole
Chamfering is carried out, aligned portions 15 are matched with the second locating convex block 6.Some core-drawing holes need to carry out chamfering to its both ends, pass through this
Step, people can carry out chamfering to the both ends of core-drawing hole as needed.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, these all do not interfere with what the present invention was implemented
Effect and practical applicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (6)
1. processing method is accurately positioned in die casting core-drawing hole, it is characterised in that：Include the following steps：
(1) die casting positioning burr：Die casting precasts positioning burr in die casting in the end in first hole, is formed with positioning burr
First hole；
(2) preliminary cleaning：Screw rod is inserted into just hole, first hole is tentatively cleared up；The screw rod include bar portion and with
The spire that first hole inner wall offsets, one end of the bar portion are machined with mating groove, and the spire is spirally wound in bar portion；
(3) it just positions：Drill bit is placed into just bore ends, the first locating convex block and positioning burr for making drill bit offset, and realize just
Positioning；The drill bit is connected with motor, and drill bit includes forepart, cutting portion and shank, and the forepart is fixed with several first positioning
Convex block and the second locating convex block, first locating convex block are matched with positioning burr, second locating convex block and mating groove
It is adapted；Cutting edge is fixed on the cutting portion, the first chamfering blades, the shank are fixed between the cutting portion and shank
Switch for controlling motor is installed close to the end of the first chamfering blades；
(4) secondary positioning：Screw rod is pushed, the mating groove of screw rod and the second locating convex block of drill bit is made to offset, is realized secondary
Positioning；
(5) reaming and secondary cleaning：Drill bit is driven to rotate by motor, the cutting edge on drill bit carries out first hole reaming, and
Positioning burr is machined away during reaming, and then forms smart hole；Drill bit can push screw rod to turn in rotation when promoting
Go out just hole, screw rod makes the clast that reaming generates be discharged to outside just hole along spire；
(6) chamfering：After drill bit completes reaming, screw rod is completely pushed out of, and the first chamfering blades on drill bit can be to smart hole at this time
One end carries out chamfering；When switch is triggered by the end of core-drawing hole, motor is stopped, and the first chamfering blades complete chamfering, so as to
Form core-drawing hole.
2. processing method is accurately positioned in die casting core-drawing hole according to claim 1, it is characterised in that：After step (5)
Third time clast cleaning is carried out, the clast in smart hole is cleaned out.
3. processing method is accurately positioned in die casting core-drawing hole according to claim 1, it is characterised in that：After step (6),
Chamfering is carried out to the other end of core-drawing hole using with the second locating convex block matched chamfering bar.
4. processing method is accurately positioned in die casting core-drawing hole according to claim 3, it is characterised in that：The chamfering bar packet
Include the second chamfering blades and with the matched aligned portions of the second locating convex block.
5. processing method is accurately positioned in die casting core-drawing hole according to claim 1, it is characterised in that：The step (3)
Middle front part is fixed with four piece of first locating convex block, and four piece of first locating convex block is uniformly distributed along the circumferential direction of forepart.
6. processing method is accurately positioned in die casting core-drawing hole according to claim 1, it is characterised in that：The step (3)
Middle front part is fixed with four piece of second locating convex block, and four piece of second locating convex block is uniformly distributed along the circumferential direction of forepart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810079794.3A CN108188667B (en) | 2018-01-27 | 2018-01-27 | Processing method is accurately positioned in die casting core-drawing hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810079794.3A CN108188667B (en) | 2018-01-27 | 2018-01-27 | Processing method is accurately positioned in die casting core-drawing hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108188667A true CN108188667A (en) | 2018-06-22 |
| CN108188667B CN108188667B (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810079794.3A Active CN108188667B (en) | 2018-01-27 | 2018-01-27 | Processing method is accurately positioned in die casting core-drawing hole |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203221234U (en) * | 2013-04-16 | 2013-10-02 | 皮丕军 | countersunk knife |
| CN203711945U (en) * | 2013-08-31 | 2014-07-16 | 朱振明 | Circular hole chamfering drill bit of automobile mold |
| JP2014166654A (en) * | 2013-02-28 | 2014-09-11 | Aisin Aw Co Ltd | Drilling tool |
| CN205110891U (en) * | 2015-11-04 | 2016-03-30 | 烟台胜地汽车零部件制造有限公司 | Sword is bored to chamfer |
| KR20170020100A (en) * | 2015-08-13 | 2017-02-22 | 예상백 | Drill and reamer |
-
2018
- 2018-01-27 CN CN201810079794.3A patent/CN108188667B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014166654A (en) * | 2013-02-28 | 2014-09-11 | Aisin Aw Co Ltd | Drilling tool |
| CN203221234U (en) * | 2013-04-16 | 2013-10-02 | 皮丕军 | countersunk knife |
| CN203711945U (en) * | 2013-08-31 | 2014-07-16 | 朱振明 | Circular hole chamfering drill bit of automobile mold |
| KR20170020100A (en) * | 2015-08-13 | 2017-02-22 | 예상백 | Drill and reamer |
| CN205110891U (en) * | 2015-11-04 | 2016-03-30 | 烟台胜地汽车零部件制造有限公司 | Sword is bored to chamfer |
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| Publication number | Publication date |
|---|---|
| CN108188667B (en) | 2019-04-23 |
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