CN108188667B - 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
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- CN108188667B CN108188667B CN201810079794.3A CN201810079794A CN108188667B CN 108188667 B CN108188667 B CN 108188667B CN 201810079794 A CN201810079794 A CN 201810079794A CN 108188667 B CN108188667 B CN 108188667B
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- hole
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- drill bit
- locating convex
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- 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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Abstract
This patent is related to die casting manufacture field, discloses a kind of die casting core-drawing hole accurate positionin processing method, includes the following steps: that (1) die casting positions burr；(2) preliminary cleaning；(3) it just positions；(4) secondary positioning；(5) reaming and secondary cleaning；(6) chamfering.This programme realizes just positioning by the cooperation of the first locating convex block and positioning burr of drill bit, 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, to improve the processing quality of die casting.
Description
Technical field
The invention belongs to die casting manufacture fields.
Background technique
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, the first hole formed when needing after completing die casting to die casting are processed once again, to form the core-drawing hole for being suitble to assembly.It is existing
Core pulling hole forming method be largely directly to be processed to first hole by the cooperation of drill bit and motor, the position of drill bit and first hole
It sets and is difficult to accurately be positioned, so that cutting edge is not quite similar to the cutting output at each position in first hole, lead 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.
Summary of the invention
The purpose of the present invention is to provide a kind of die casting core-drawing holes, and processing method is accurately positioned, to solve in background technique
The not high problem of core-drawing hole machining accuracy.
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 positions burr: die casting precasts positioning burr in the end in the hole die casting Shi Chu, 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 being placed into just bore ends, the first locating convex block of drill bit is made to offset with positioning burr, it is real
Now just positioning；The drill bit is connected with motor, and drill bit includes front, cutting portion and shank, and the front 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；It is fixed with cutting edge on the cutting portion, the first chamfering blades, the shank are fixed between the cutting portion and shank
End close to the first chamfering blades is equipped with the switch for controlling motor；
(4) secondary positioning: pushing screw rod, and the second locating convex block of the mating groove and drill bit that make screw rod offsets, and realizes
Secondary positioning；
(5) reaming and secondary cleaning: driving drill bit rotation by motor, and 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 will push screw rod side when promoting and rotate
While drilling out just hole, the clast that screw rod generates reaming is 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 stops working, and the first chamfering blades complete chamfering,
To form core-drawing hole.
The principle and beneficial effect of this base case are:
(1) this programme realizes just positioning by the cooperation of the first locating convex block and positioning burr of drill bit, improves core pulling
The precision of hole machined, then secondary positioning is realized by the cooperation of the second locating convex block and screw rod of drill bit, it further improves
The precision of core pulling hole machined；
(2) screw rod can tentatively clear up first hole when being inserted into just hole, and the clast that product is 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 rotating with drill bit in screw rod, will
Just hole is discharged in the clast that cutting edge generates in reaming procedure, prevents clast from influencing the machining accuracy of core-drawing hole, further mentions
The high machining accuracy of core-drawing hole；
(4) screw rod can play guiding role to drill bit during mobile with 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 offsets and is triggered in the end that the first chamfering blades complete chamfering Shi Huiyu core-drawing hole, from
And control motor and stop working, prevent core pulling Hole chamfering excessive；
(6) this programme precasts positioning burr in die casting, and to realize the first positioning of core pulling hole machined, structure is simple,
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, carries out the cleaning of third time clast 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), utilizes the chamfering matched with 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
According to the both ends progress chamfering needed to core-drawing hole.
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.By the cooperation of the second chamfering blades and aligned portions chamfering can be carried out to the other end of core-drawing hole.
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
Circumferential direction of four piece of first locating convex block along front is uniformly distributed.Four piece of first locating convex block mutually forms cross, forms cross
First locating convex block of shape and the fitment stability of positioning burr are stronger, 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
Circumferential direction of four piece of second locating convex block along front is uniformly distributed.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, to improve the precision of core pulling hole machined, are also prevented from drill bit
Deviation is generated during the work time.
Detailed description of the invention
Fig. 1 is that the just structural schematic diagram in hole is accurately positioned in processing method in die casting core-drawing hole of the present invention；
Fig. 2 is the structural schematic diagram of drill bit；
Fig. 3 is the enlarged drawing of A in Fig. 2；
Fig. 4 is the structural schematic diagram of screw rod；
Fig. 5 is the structural schematic diagram of chamfering bar.
Specific embodiment
Below by the further details of explanation of specific embodiment:
Appended drawing reference in Figure of description includes: die casting 1, first hole 2, positioning burr 3, front 4, the first locating convex block
5, the second locating convex block 6, cutting portion 7, cutting edge 8, shank 9, switch 10, the first chamfering blades 11, bar portion 12, spire 13,
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 positions burr 3: as shown in Fig. 1, die casting precasts positioning hair in the end in the hole die casting Shi Chu 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 Fig. 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 being placed into just 2 end of hole, the first locating convex block 5 of drill bit is made to offset with positioning burr 3,
Realize just positioning.Wherein, as shown in attached drawing 2 and attached drawing 3, drill bit is connected to the motor, and drill bit includes front 4, cutting portion 7 and shank
9, it is uniformly distributed in the circumferential direction of front 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；It is fixed with cutting edge 8 on cutting portion 7, the first chamfering blades 11, shank 9 are fixed between cutting portion 7 and shank 9
End close to the first chamfering blades 11 is equipped with the switch 10 for controlling motor.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 and positions the fitment stability of burr 3 more
By force, 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 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: pushing screw rod, and the second locating convex block 6 of the mating groove and drill bit that make screw rod offsets, and realizes
Secondary positioning.
(5) reaming and secondary cleaning: drill bit rotation is driven 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 will push screw rod side when promoting
Just hole 2 is produced on rotation side, and the clast that screw rod generates reaming is discharged to outside just hole 2 along spire 13.
(6) cleaning of third time clast is carried out, the clast in smart hole is cleaned out, prevents clast to the processing essence of core-drawing hole
Degree generates adverse 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 stops working, and the first chamfering blades 11 are completed
Chamfering, to form core-drawing hole.
(8) chamfering is carried out using the other end of the chamfering bar matched with the second locating convex block 6 to core-drawing hole.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 in the both ends to core-drawing hole as needed.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific 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 also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.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, characterized by the following steps:
(1) die casting positions burr: die casting precasts positioning burr in the end in the hole die casting Shi Chu, 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 being placed into just bore ends, so that the first locating convex block of drill bit is offseted with positioning burr, realizes just
Positioning；The drill bit is connected with motor, and drill bit includes front, cutting portion and shank, and the front 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；It is fixed with cutting edge on the cutting portion, the first chamfering blades, the shank are fixed between the cutting portion and shank
End close to the first chamfering blades is equipped with the switch for controlling motor；
(4) secondary positioning: pushing screw rod, and the second locating convex block of the mating groove and drill bit that make screw rod offsets, and realizes secondary
Positioning；
(5) reaming and secondary cleaning: driving drill bit rotation by motor, and the cutting edge on drill bit carries out reaming to first hole, and
Positioning burr is machined away during reaming, and then forms smart hole；Drill bit will push screw rod when promoting and turn in rotation
Just hole, the clast that screw rod generates reaming are discharged to outside just hole along spire out；
(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 stops working, and the first chamfering blades complete chamfering, thus
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)
The cleaning of third time clast 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 using the other end of the chamfering bar matched with the second locating convex block to core-drawing hole.
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
The aligned portions for including the second chamfering blades and being matched with 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 circumferential direction of four piece of first locating convex block along front is uniformly distributed.
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 circumferential direction of four piece of second locating convex block along front is uniformly distributed.
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 CN108188667A (en) | 2018-06-22 |
| CN108188667B true 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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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5990478B2 (en) * | 2013-02-28 | 2016-09-14 | アイシン・エィ・ダブリュ株式会社 | Drilling tool |
| CN203221234U (en) * | 2013-04-16 | 2013-10-02 | 皮丕军 | Countersunk head cutter |
| 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 |
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| CN108188667A (en) | 2018-06-22 |
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