CN202701458U - Countersink cutter - Google Patents
Countersink cutter Download PDFInfo
- Publication number
- CN202701458U CN202701458U CN 201220246168 CN201220246168U CN202701458U CN 202701458 U CN202701458 U CN 202701458U CN 201220246168 CN201220246168 CN 201220246168 CN 201220246168 U CN201220246168 U CN 201220246168U CN 202701458 U CN202701458 U CN 202701458U
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- CN
- China
- Prior art keywords
- mandrel
- countersink
- workpiece
- cutter hub
- fairlead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a countersink cutter comprising a cutter body and a locating guide mechanism arranged on the cutter body, wherein the locating guide mechanism comprises a core shaft fixed at the front end of the cutter body and coaxially arranged on the cutter body, a rotating body is sleeved on the core shaft in a rotating mode, the rotating body is provided with a periphery face inserted in a locating hole of a workpiece in a gap mode, and an anti-off structure matched in the axial direction in a thrust mode is arranged between the rotating body and the core shaft. When the machined workpiece is countersunk, the rotating body can perform locating and guiding functions to the cutter body. Meanwhile, when the core shaft rotates with the cutter body, the rotating body is stable relative to the workpiece so that the locating hole of the workpiece is prevented from being scratched. Therefore, a match gap between the rotating body and the work piece can be narrowed as small as possible so that the countersink cutter is accurate in locating, swinging of an electric tool is small, stability of countersink machining is improved, and processing quality of the workpiece is ensured.
Description
Technical field
The utility model relates to a kind of cutter of counterbore processing usefulness of engineering goods, is specifically related to a kind of countersink.
Background technology
The flange locating hole at used for high-voltage switch cylindrical shell two ends generally will carry out the processing of ream counterbore, adopt traditional countersink to add man-hour, electric hand tool, the lead with countersink inserts in the rough machined locating hole first, and the locating hole matched in clearance of lead and workpiece plays positioning and guiding.Because traditional countersink when rotated, lead is along with cutter hub relatively rotates with workpiece together, this just has relatively high expectations to the gap precision between the locating hole of lead and workpiece, and too small lead and the workpiece fault of making easily in gap causes lead wearing and tearing even locating hole to scratch; Excesssive gap makes easily again electric tool produce and swings, and causes workpiece to scratch, and produces larger mismachining tolerance easily.
The utility model content
The purpose of this utility model provides a kind of countersink, adopts the lead positioning and guiding in order to solve existing countersink, causes easily inaccurate, the fluctuation of service in location, even the problem of workpiece damage occurs easily.
The utility model adopts following technical scheme: a kind of countersink, comprise cutter hub and be arranged on positioning guide mechanism on the cutter hub, described positioning guide mechanism comprises and is fixed on the cutter hub front end and the mandrel coaxial setting of cutter hub, rotate sheathed rotor on the described mandrel, rotor has the outer peripheral face of gap inserting in the locating hole of workpiece, has the disconnecting prevention structure that axial thrust cooperates between the mandrel of rotor.
Described rotor is that the gap is sheathed on the fairlead on the mandrel, be fixed with axially spaced-apart on the outer wall of mandrel and arrange respectively forward and backward annular gear edge with the rear and front end apical grafting of fairlead, described front annular gear along and fairlead between, rear annular gear along and fairlead between roll respectively and be equipped with the grain that rolls along annular spread, described disconnecting prevention structure is front annular gear edge.
Described mandrel is three grades of multidiameters that increase step by step from front to back, and described rear annular gear is along being made of the enlarged diameter section of mandrel and the step between the mid diameter section, and described front annular gear edge is the rotating nut of screw thread spinning on the reduced diameter section of mandrel.
Described disconnecting prevention structure also comprise the screw thread spinning on the reduced diameter section of mandrel with standby cap described rotating nut front end apical grafting.
The front end of described cutter hub is provided with the pilot hole that extends along its axial direction, and the rear end of described mandrel fixedly is inserted in the pilot hole.
Adopt the countersink of said structure, because the mandrel of positioning guide mechanism is connected with cutter hub is coaxial, rotor is sheathed on the mandrel around the mandrel axial-rotation, can guarantee that rotor and cutter hub are coaxial, when the rotor gap is inserted in the locating hole of workpiece, and then can guarantee locating hole coaxial of cutter hub and workpiece; Under the coaxial prerequisite of assurance and under the effect at disconnecting prevention structure, during the processing work counterbore, rotor can play to cutter hub the effect of positioning and guiding, in the process that simultaneously mandrel rotates together along with cutter hub, the relative workpiece of rotor is motionless, avoided the locating hole of workpiece is produced scuffing, therefore can reduce as much as possible the fit clearance of rotor and workpiece, make the countersink location more accurate, the swing of electric tool is also very little, thereby improved the stability of ream counterbore processing, guaranteed the crudy of workpiece.
Description of drawings
Fig. 1 is example structure schematic diagram of the present utility model;
Fig. 2 is the conductor structure schematic diagram among Fig. 1;
Fig. 3 is the cutaway view of the fairlead among Fig. 1;
Fig. 4 is the core shaft structure schematic diagram among Fig. 1;
Fig. 5 is the cutaway view of the rotating nut among Fig. 1.
The specific embodiment
The embodiment of the utility model countersink: shown in Fig. 1-5, this countersink is made of cutter hub 2 and positioning guide mechanism, cutter hub 2 adopts universal architecture, be used for fixedly being inserted into the front end of electric tool 1, the front end of cutter hub 2 has the pilot hole that axial direction extends, and whole positioning guide mechanism is arranged on the front end of cutter hub 2.Positioning guide mechanism comprises mandrel 8, mandrel 8 is three grades of multidiameters that increase step by step, the enlarged diameter section of mandrel 8 partly is inserted in the pilot hole of cutter hub 2, outer peripheral face at cutter hub 2 offers the screw 21 that is communicated with pilot hole, be installed with jackscrew 6 in the screw 21, simultaneously the outer peripheral face of the part in the insertion pilot hole of mandrel 8 offers the blind hole 81 corresponding with screw 21, like this with jackscrew 6 stretch into that an end inserts in the blind hole 81 in the screw, can realize that mandrel 8 is along with cutter hub 2 rotates together.The gap is arranged with fairlead 4 on the mid diameter section of mandrel 8, fairlead 4 gaps are inserted in the locating hole of workpiece 7, offer external screw thread on the reduced diameter section of mandrel 8, screw thread is installed with the rotating nut 5 with the front end apical grafting of fairlead 4 on the reduced diameter section of mandrel 8, under the effect that holds out against of rotating nut 5, the enlarged diameter section of the rear end of fairlead 4 and mandrel 8 and the step apical grafting between the mid diameter section.Inner peripheral surface at fairlead 4 offers two annular grooves that link to each other with the front and rear end of fairlead 4 respectively, offer the annular groove that links to each other with the rear end face of rotating nut 5 on the outer peripheral face of rotating nut 5, the annular groove of fairlead 4 front ends and the annular groove corresponding matching of rotating nut 5 form holds the scroll space of rolling grain 3, also offer with the annular groove of fairlead rear end on the enlarged diameter section outer peripheral face of same mandrel 8 and cooperate the annular groove that forms scroll space, row in two scroll space rolls under grain 3 effects, when mandrel 8 driven rotary nuts 5 rotated, fairlead 4 was motionless.
In order to guarantee the stable of rotating nut 5, to go back screw thread at the reduced diameter section of mandrel 8 and be installed with standby cap 9 with rotating nut 5 front end apical graftings, rotating nut 5 and standby cap 9 have consisted of the disconnecting prevention structure that prevents fairlead 4 disengaging mandrels 8.
During the counterbore of the concrete processing work 7 of above-described embodiment, positioning guide mechanism is inserted in the pilot hole of cutter hub 2 and fixing with jackscrew 6, add man-hour, (can adopt little matched in clearance) in the locating hole of fairlead 4 insertion workpiece 7 come cutter hub 2 is carried out guide-localization, when electric tool 1 drives cutter hub 2 rotary cutting, mandrel 8 and rotating nut 5 are along with cutter hub 2 rotates together, and fairlead 4 is motionless, so just can not produce slip between fairlead 4 and the workpiece 7, thereby avoid the locating hole of workpiece 7 to scratch, can make again cutter hub 2 location more accurate owing to fit clearance between fairlead 4 and the workpiece 7 is very little, electric tool 1 swings also very little, thereby improves the quality of processing stability and workpiece.
In other embodiments, rotor also can adopt bearing, and bearing inner race and mandrel are fixed, and the locating hole matched in clearance of the outer ring of bearing and workpiece also can realize the positioning and guiding effect to cutter hub.
In other embodiments, also can offer annular groove at mandrel, two forward and backward annular gear edges that axially spaced-apart is arranged have been formed at mandrel like this, the rear and front end of fairlead respectively with two forward and backward annular apical graftings, also can realize being rotatably assorted of fairlead and mandrel, so just do not need to arrange rotating nut and standby cap, front annular gear edge can be directly as disconnecting prevention structure, can certainly think that enlarged diameter section and the step between the mid diameter section of mandrel have formed front annular gear edge, rotating nut is rear annular gear edge.
Claims (5)
1. countersink, comprise cutter hub and be arranged on positioning guide mechanism on the cutter hub, it is characterized in that: described positioning guide mechanism comprises and is fixed on the cutter hub front end and the mandrel coaxial setting of cutter hub, rotate sheathed rotor on the described mandrel, rotor has the outer peripheral face of gap inserting in the locating hole of workpiece, has the disconnecting prevention structure that axial thrust cooperates between the mandrel of rotor.
2. countersink according to claim 1, it is characterized in that: described rotor is that the gap is sheathed on the fairlead on the mandrel, be fixed with axially spaced-apart on the outer wall of mandrel and arrange respectively forward and backward annular gear edge with the rear and front end apical grafting of fairlead, described front annular gear along and fairlead between, rear annular gear along and fairlead between roll respectively and be equipped with the grain that rolls along annular spread, described disconnecting prevention structure is front annular gear edge.
3. countersink according to claim 2, it is characterized in that: the three grade multidiameters of described mandrel for increasing step by step from front to back, described rear annular gear is along being made of the enlarged diameter section of mandrel and the step between the mid diameter section, and described front annular gear edge is the rotating nut of screw thread spinning on the reduced diameter section of mandrel.
4. countersink according to claim 3 is characterized in that: described disconnecting prevention structure also comprise the screw thread spinning on the reduced diameter section of mandrel with standby cap described rotating nut front end apical grafting.
5. the described countersink of any one according to claim 1-4 is characterized in that: the front end of described cutter hub is provided with the pilot hole that extends along its axial direction, and the rear end of described mandrel fixedly is inserted in the pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246168 CN202701458U (en) | 2012-05-29 | 2012-05-29 | Countersink cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246168 CN202701458U (en) | 2012-05-29 | 2012-05-29 | Countersink cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202701458U true CN202701458U (en) | 2013-01-30 |
Family
ID=47581798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220246168 Expired - Fee Related CN202701458U (en) | 2012-05-29 | 2012-05-29 | Countersink cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202701458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408800A (en) * | 2020-03-10 | 2020-07-14 | 长沙五七一二飞机工业有限责任公司 | Cutting device for coordinated machining of connecting holes |
-
2012
- 2012-05-29 CN CN 201220246168 patent/CN202701458U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408800A (en) * | 2020-03-10 | 2020-07-14 | 长沙五七一二飞机工业有限责任公司 | Cutting device for coordinated machining of connecting holes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20210529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |