CN202964026U - Drilling fixture capable of centering through outward expansion of expansion sleeve - Google Patents
Drilling fixture capable of centering through outward expansion of expansion sleeve Download PDFInfo
- Publication number
- CN202964026U CN202964026U CN 201220550670 CN201220550670U CN202964026U CN 202964026 U CN202964026 U CN 202964026U CN 201220550670 CN201220550670 CN 201220550670 CN 201220550670 U CN201220550670 U CN 201220550670U CN 202964026 U CN202964026 U CN 202964026U
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- China
- Prior art keywords
- expansion
- expansion set
- centering
- expansion sleeve
- drilling
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- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title abstract description 10
- 238000003754 machining Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 230000008961 swelling Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a drilling fixture capable of centering through outward expansion of an expansion sleeve. The drilling fixture capable of centering through the outward expansion of the expansion sleeve comprises a drilling mould plate with a through hole in the middle part, wherein a lug boss is arranged at the lower end of the drilling mould plate; multiple drill bushes are uniformly arranged around the axis of the drilling mould plate; a stepped screw is arranged inside the through hole on the middle part of the drilling mould plate; the lower end of the stepped screw penetrates through a disc-shaped expansion sleeve, and a lower nut is installed at the lower end of the stepped screw; an upper nut is installed at the upper end of the stepped screw; multiple expansion grooves are formed on the upper side of the disc-shaped expansion sleeve in the circumferential direction; and an inner hole of the disc-shaped expansion sleeve has a taper in sliding fit with the lug boss. The drilling fixture capable of centering through the outward expansion of the expansion sleeve has the characteristics of high expansion force, no offset in the machining process, automatic centering capability, high machining precision, reasonable design, simple structure, convenience in operation, small volume, light weight, convenience in detachment and installation, convenience for carrying, low production cost and easy popularization and application.
Description
Technical field
The utility model belongs to the Machining Technology field, relates to a kind of fixture, is specifically related to a kind of expansion set and extends out formula centering boring grab.
Background technology
At present, along with the development of society and the progress of science and technology, auto industry has obtained great development, and increasing automobile has entered into huge numbers of families, and the demand of automobile brake disc is also more old more to be arrived, and factory often receives the order of large quantities of automobile brake discs.Position, the hole required precision of the thread Pilot hole on automobile brake disc is higher, use traditional three points centering boring grab processing, because its 3 swelling dynamics are inadequate, have the skew of trace when using this fixture to carry out Drilling operation, thereby generation mismachining tolerance, can't guarantee the positional precision in these holes, cause its position, hole not reach the pattern requirement.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, provides a kind of expansion set to extend out formula centering boring grab, its swelling great efforts, process does not produce skew, but self-centering, and machining accuracy is high, reasonable in design, simple in structure, easy to operate, volume is small and exquisite, lightweight, easy accessibility is convenient to carrying, production cost is low, is convenient to promote the use of.
for achieving the above object, the technical solution adopted in the utility model is: a kind of expansion set extends out formula centering boring grab, comprise that the middle part is with the bushing plate of through hole, it is characterized in that: described bushing plate lower end is provided with boss, described bushing plate evenly is provided with a plurality of drill bushings around its axis direction, be provided with the ladder screw rod in described bushing plate middle through-hole, described ladder screw rod lower end is passed the dish type expansion set lower nut is installed, described ladder screw rod upper end is equipped with top nut, described dish type expansion set upside evenly is provided with a plurality of expansion slots along its circumferencial direction, described dish type expansion set endoporus is provided with the tapering that is slidably matched with boss.
Above-mentioned expansion set extends out formula centering boring grab, it is characterized in that: be provided with half fillet on described boss.
Above-mentioned expansion set extends out formula centering boring grab, and it is characterized in that: the span of described dish type expansion set hole taper α is 10 °-30 °.
The utility model compared with prior art has the following advantages:
(1) this expansion set extends out formula centering boring grab employing dish type expansion set and extends out the swelling workpiece to be processed, the swelling great efforts, and process does not produce skew, but self-centering simultaneously, machining accuracy is high.
(2) it is reasonable, simple in structure that this expansion set extends out formula centering boring jig Design, and operating personnel only need workpiece is arranged on the relevant position of this fixture, tighten the clamp operation that top nut can realize workpiece, use very easy.
(3) it is long-pending small and exquisite, lightweight that this expansion set extends out formula centering boring clamp body, and easy accessibility is convenient to carrying, luck tendency.
(4) this expansion set extends out a lot of parts of formula centering boring grab and all is convenient to very much produce, buy, thereby its production cost is very low, is convenient to promote the use of.
Below by drawings and Examples, the utility model is described in further detail.
Description of drawings
Fig. 1 is top view of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the front view of the utility model dish type expansion set.
Fig. 4 is the B-B cutaway view of Fig. 3.
Fig. 5 is the structural representation of the utility model bushing plate.
Description of reference numerals:
The 1-workpiece; The 2-drill bushing; 3-dish type expansion set;
The 3-1-expansion slot; The 4-bushing plate; The 4-1-through hole;
The 4-2-boss; The 5-lower nut; 6-ladder screw rod;
The 7-top nut.
The specific embodiment
extend out formula centering boring grab as Fig. 1-a kind of expansion set shown in Figure 5, comprise that the middle part is with the bushing plate 4 of through hole 4-1, described bushing plate 4 lower ends are provided with boss 4-2, described bushing plate 4 evenly is provided with a plurality of drill bushings 2 around its axis direction, be provided with ladder screw rod 6 in described bushing plate 4 middle through-hole 4-1, described ladder screw rod 6 lower ends are passed dish type expansion set 3 lower nut 5 are installed, described ladder screw rod 6 upper ends are equipped with top nut 7, described dish type expansion set 3 upsides evenly are provided with a plurality of expansion slot 3-1 along its circumferencial direction, described dish type expansion set 3 endoporus are provided with the tapering that is slidably matched with boss 4-2.
As Fig. 2 and shown in Figure 5, be provided with half fillet on described boss 4-2, it is smooth and easy that half fillet can make dish type expansion set 3 slide.
As shown in Figure 4, the span of described dish type expansion set 3 hole taper α is 10 °-30 °, preferred 15 ° of α.
The course of work that the utility model expansion set extends out formula centering boring grab is: as shown in Figure 2, at first the dish type expansion set 3 that this expansion set is extended out formula centering boring grab is placed in the endoporus of workpiece 1, turn clockwise top nut 7, dish type expansion set 3 namely is installed in the upwards tension of lower nut 5 of ladder screw rod 6 lower ends, by the interaction of the dish type expansion set 3 endoporus conical surfaces and boss 4-2, the cylindrical of dish type expansion set 3 namely expands outwardly and the endoporus of swelling workpiece 1 equably.Workpiece 1 is started rig by after swelling, and drill bit passes the drill bushing 2 that is arranged on bushing plate 4 can carry out Drilling operation.
The above; it is only preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment does, all still belong in the protection domain of technical solutions of the utility model.
Claims (3)
1. an expansion set extends out formula centering boring grab, comprise that the middle part is with the bushing plate (4) of through hole (4-1), it is characterized in that: described bushing plate (4) lower end is provided with boss (4-2), described bushing plate (4) evenly is provided with a plurality of drill bushings (2) around its axis direction, be provided with ladder screw rod (6) in described bushing plate (4) middle through-hole (4-1), described ladder screw rod (6) lower end is passed dish type expansion set (3) lower nut (5) is installed, described ladder screw rod (6) upper end is equipped with top nut (7), described dish type expansion set (3) upside evenly is provided with a plurality of expansion slots (3-1) along its circumferencial direction, described dish type expansion set (3) endoporus is provided with the tapering that is slidably matched with boss (4-2).
2. extend out formula centering boring grab according to expansion set claimed in claim 1, it is characterized in that: be provided with half fillet on described boss (4-2).
3. extend out formula centering boring grab according to expansion set claimed in claim 1, it is characterized in that: the span of described dish type expansion set (3) hole taper α is 10 °-30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220550670 CN202964026U (en) | 2012-10-25 | 2012-10-25 | Drilling fixture capable of centering through outward expansion of expansion sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220550670 CN202964026U (en) | 2012-10-25 | 2012-10-25 | Drilling fixture capable of centering through outward expansion of expansion sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202964026U true CN202964026U (en) | 2013-06-05 |
Family
ID=48505155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220550670 Expired - Fee Related CN202964026U (en) | 2012-10-25 | 2012-10-25 | Drilling fixture capable of centering through outward expansion of expansion sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202964026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909295A (en) * | 2013-12-21 | 2014-07-09 | 青特集团有限公司 | Practical multi-functional overturning drilling jig tooling with reaming function |
-
2012
- 2012-10-25 CN CN 201220550670 patent/CN202964026U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909295A (en) * | 2013-12-21 | 2014-07-09 | 青特集团有限公司 | Practical multi-functional overturning drilling jig tooling with reaming function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131025 |