CN201931132U - Reverse-drawing countersink drill - Google Patents
Reverse-drawing countersink drill Download PDFInfo
- Publication number
- CN201931132U CN201931132U CN2010206647614U CN201020664761U CN201931132U CN 201931132 U CN201931132 U CN 201931132U CN 2010206647614 U CN2010206647614 U CN 2010206647614U CN 201020664761 U CN201020664761 U CN 201020664761U CN 201931132 U CN201931132 U CN 201931132U
- Authority
- CN
- China
- Prior art keywords
- counterbit
- knife bar
- processed
- face
- spacing collar
- 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 - Lifetime
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Abstract
The utility model discloses a reverse-drawing countersink drill, which comprises a countersink drill (1) and a cutter bar (5). The countersink drill (1) is fixed at one end of the cutter bar (5). The reverse-drawing countersink drill is characterized by also comprising a limit device arranged on the cutter bar (5), the limit device is used for limiting the depth of a countersink of the countersink drill (1) and comprises a limit sleeve (2) and an end face limit block (4), and the end face limit block (4) is used for limiting movement of the limit sleeve (2) and the countersink drill (1) so that the difference between the thickness of a part (3) to be processed and the depth of the countersink processed by the countersink drill (1) is equal to the length of the limit sleeve (2). Therefore, the depth of the countersink of the part (3) to be processed or the thickness of the part (3) to be processed after deduction of the depth of the countersink can be controlled accurately.
Description
Technical field
The utility model relates to a kind of anti-counterbit that draws.
Background technology
Adopting riveted joint assembling and the bolt automobile that is linked and packed, when aircrafts etc. have the product of labyrinth, some rivet hole and screw hole can only be arranged in the structure of semiclosed or the approaching state that seals, manual or pneumatic counter boring bores and can't implement positive processing to the counterbore at the countersunk head position of rivet hole or screw hole, therefore need reverse machining counterbore, the anti-counterbit that draws that general reverse machining is used is made up of counterbit and knife bar, counterbit and knife bar can be dismantled and make up, earlier knife bar is penetrated in the hole from opening wide face during use, at semiclosed end counterbit is inserted in knife bar again, pins counterbit and begin processing.In process, the workman is difficult for seeing clearly even does not observe processed position, be difficult to the depth dimensions or the counterbore place part thickness size of control counterbore, cause depth dimensions overproof easily, the product accuracy class that processes in this way is very low, therefore, for avoiding overproof or the raising machining accuracy, the workman must be at the careful trial cut of each working position.When counterbore processing quantity is many, it is very low that workman's working (machining) efficiency seems, the workman can't guarantee when dimension precision requirement is higher.
Summary of the invention:
The technical problems to be solved in the utility model is to provide a kind of depth dimensions that can accurately limit counterbore, realizes accurate, efficient, the anti-counterbit that draws of rapid processing.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of anti-counterbit that draws is provided, comprise: counterbit and knife bar, described counterbit is fixed on an end of knife bar, it is characterized in that also comprising the stopping means that is located at the counter boring depth dimensions that can limit counterbit on the knife bar, described stopping means comprises spacing collar, the end face limited block, described spacing collar is enclosed within on the knife bar and close counterbit, the length of spacing collar equals the gauge of part to be processed after except the counter boring degree of depth, the guide hole matched in clearance of the external diameter of spacing collar and part to be processed, the internal diameter of spacing collar cooperates with the diametric clearance of knife bar cooperation place, it is corresponding that described end face limited block has one or two shape of opening wide face with part to be processed, and the binding face that can fit, described end face limited block is fixed on part to be processed and opens wide on the face, an one binding face is opened wide face with part to be processed and is contacted, have through hole on the end face limited block, through-hole aperture is bigger and littler than spacing sleeve outer diameter than knife bar external diameter, and cooperate with the knife bar crest clearance, there is the annular facets of a no blade at the edge, through hole aperture of the blade end of described counterbit, the annular facets external diameter is more smaller than spacing sleeve outer diameter, described knife bar and counterbit combination place matched in clearance, the high grade of gauge precision behind the length dimension ratio of precision part to be processed counter boring of described spacing collar, described knife bar one end is made the structure that is suitable for general pneumatic drill clamping.
The utility model has following good effect than prior art.A kind of anti-counterbit that draws of the present utility model, the work in-process knife bar penetrates in the hole from opening wide face, at semiclosed end counterbit is inserted in knife bar again, pin counterbit and begin processing, when the annular facets of the blade end of counterbit touches spacing collar on the knife bar, because being fixed on part to be processed, spacing collar opens wide stopping of end face limited block on the face, make the working depth of counterbit just equal length dimension after part to be processed is removed a spacing collar length, the counter boring depth dimensions of part to be processed is precisely controlled like this, the operator does not need eyes to observe in the processing, during batch machining, workman's working (machining) efficiency height.
Description of drawings
Fig. 1 is a kind of anti-schematic diagram that draws counterbit of the present utility model.
Fig. 2 is a kind of anti-counterbit schematic diagram that draws counterbit of the present utility model.
Fig. 3 is a kind of anti-counterbit and knife bar combination schematic diagram that draws counterbit of the present utility model.
Fig. 4 is a kind of anti-schematic perspective view that draws the counterbit machining state of the present utility model.
The specific embodiment
Below in conjunction with embodiment the utility model is further described.
Fig. 1 to Fig. 3 is a kind of anti-counterbit that draws of the present utility model, comprise: counterbit 1 and knife bar 5, described counterbit 1 is fixed on an end of knife bar 5, it is characterized in that also comprising the stopping means that is located at the counter boring depth dimensions that can limit counterbit on the knife bar 5, described stopping means comprises spacing collar 2, end face limited block 4, described spacing collar 2 is enclosed within on the knife bar 5 and close counterbit, the length of spacing collar 2 equals the gauge of part to be processed 3 after except the counter boring degree of depth, the guide hole matched in clearance of the external diameter of spacing collar 2 and part to be processed 3, the internal diameter of spacing collar 2 cooperates with the diametric clearance of knife bar 5 cooperation places, described end face limited block 4 has one or two and opens wide the binding face that the shape of face is corresponding and can fit with part to be processed 3, described end face limited block 4 is fixed on part to be processed 3 and opens wide on the face, an one binding face is opened wide face with part to be processed 3 and is contacted, have through hole on the end face limited block 4, through-hole aperture is bigger and littler than spacing sleeve outer diameter than the external diameter of knife bar 5 cooperation places, and cooperate with the crest clearance of knife bar 5 cooperation places, there is the annular facets of a no blade at the edge, through hole aperture of the blade end of described counterbit 1, the annular facets external diameter is more smaller than spacing sleeve 2 external diameters, described knife bar 5 and counterbit 1 combination place matched in clearance, the high grade of gauge precision behind length dimension ratio of precision part to be processed 3 counter borings of described spacing collar 2, described knife bar 5 one ends are made the structure that is suitable for general pneumatic drill clamping.
Fig. 4 is a kind of anti-schematic perspective view that draws the counterbit machining state of the present utility model, during converted products end face limited block 4 is enclosed within on the knife bar, again installation counterbit 1 end of spacing collar 2 from knife bar 5 is set on the knife bar 5, the knife bar that end face limited block 4 and spacing collar 2 are housed is opened wide face from part to be processed 3 to be penetrated in the guide hole, at 3 semiclosed ends of part to be processed counterbit 1 is inserted in knife bar 5 again, counterbit 1 and knife bar 5 is locked, end face limited block 4 and part to be processed 3 are opened wide face fits, adopt pressing plate, clamping devices such as cramp frame are fixed on part to be processed 3 with end face limited block 4 and open wide on the face, add man-hour, extrinsic motive drives knife bar 5 rotations, knife bar 5 drives counterbit 1 rotation, counterbit 1 blade begins counter boring, annular facets on the counterbit 1 contacts naturally with spacing collar 2, and in process, drive spacing collar 2 and open wide the face end to part to be processed 3 and move, when spacing collar 2 contacts with end face limited block 4 can not be mobile again the time, counterbit 1 position that reaches capacity, the counter boring depth dimensions that counterbit 1 the is processed size that also reaches capacity, this depth dimensions is exactly the counter boring size that part to be processed 3 requires processing, and the gauge removed behind the counter boring depth dimensions of part to be processed 3 is also precisely controlled like this.
Claims (7)
1. anti-counterbit that draws comprises: counterbit (1) and knife bar (5), described counterbit (1) is fixed on an end of knife bar (5), it is characterized in that also comprising being located at the stopping means that can limit the counter boring depth dimensions of counterbit (1) on the knife bar (5).
2. a kind of anti-counterbit that draws according to claim 1, it is characterized in that: described stopping means comprises spacing collar (2), end face limited block (4), described spacing collar (2) is enclosed within the last and close counterbit (1) of knife bar (5), the length of spacing collar (2) equals the gauge of part to be processed (3) after except the counter boring degree of depth, the guide hole matched in clearance of the external diameter of spacing collar (2) and part to be processed (3), the internal diameter of spacing collar (2) cooperates with the diametric clearance of knife bar (5) cooperation place, described end face limited block (4) is fixed on part to be processed (3) and opens wide on the face, the end face limited block has through hole on (4), through-hole aperture is bigger and littler than spacing sleeve outer diameter than the external diameter of knife bar (5) cooperation place, and cooperate with the crest clearance of knife bar (5) cooperation place, there is the annular facets of a no blade at the edge, through hole aperture of the blade end of described counterbit (1), and the annular facets external diameter is more smaller than spacing sleeve (2) external diameter.
3. a kind of anti-counterbit that draws according to claim 1 and 2 is characterized in that: described knife bar (5) and counterbit (1) combination place matched in clearance.
4. a kind of anti-counterbit that draws according to claim 2 is characterized in that: the high grade of gauge precision behind length dimension ratio of precision part to be processed (3) counter boring of described spacing collar (2).
5. a kind of anti-counterbit that draws according to claim 2 is characterized in that: described end face limited block (4) is fixed on part to be processed (3) by pressing plate or cramp frame and opens wide on the face.
6. according to claim 2 or 5 described a kind of anti-counterbits that draw, it is characterized in that: described end face limited block (4) has one or two and opens wide the binding face that the shape of face is corresponding and can fit with part to be processed (3).
7. a kind of anti-counterbit that draws according to claim 3 is characterized in that: described knife bar (5) one ends are made the structure that is suitable for general pneumatic drill clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206647614U CN201931132U (en) | 2010-12-17 | 2010-12-17 | Reverse-drawing countersink drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206647614U CN201931132U (en) | 2010-12-17 | 2010-12-17 | Reverse-drawing countersink drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201931132U true CN201931132U (en) | 2011-08-17 |
Family
ID=44442671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206647614U Expired - Lifetime CN201931132U (en) | 2010-12-17 | 2010-12-17 | Reverse-drawing countersink drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201931132U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501014A (en) * | 2011-11-02 | 2012-06-20 | 沈阳飞机工业（集团）有限公司 | Processing method of limiting block of anti-countersink drill limiting device |
| GB2523779A (en) * | 2014-03-05 | 2015-09-09 | Airbus Operations Ltd | Back spot-facing tool |
| 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 |
-
2010
- 2010-12-17 CN CN2010206647614U patent/CN201931132U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501014A (en) * | 2011-11-02 | 2012-06-20 | 沈阳飞机工业（集团）有限公司 | Processing method of limiting block of anti-countersink drill limiting device |
| CN102501014B (en) * | 2011-11-02 | 2014-01-22 | 沈阳飞机工业（集团）有限公司 | Processing method of limiting block of anti-countersink drill limiting device |
| GB2523779A (en) * | 2014-03-05 | 2015-09-09 | Airbus Operations Ltd | Back spot-facing tool |
| 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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |