CN201586803U - Overthreading screw tap capable of self-adjusting concentricity with internal threads - Google Patents
Overthreading screw tap capable of self-adjusting concentricity with internal threads Download PDFInfo
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- CN201586803U CN201586803U CN2009203159194U CN200920315919U CN201586803U CN 201586803 U CN201586803 U CN 201586803U CN 2009203159194 U CN2009203159194 U CN 2009203159194U CN 200920315919 U CN200920315919 U CN 200920315919U CN 201586803 U CN201586803 U CN 201586803U
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- screw tap
- tap
- screw
- hole
- cavity
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Abstract
The utility model relates to an overthreading screw tap capable of self-adjusting concentricity with internal threads. The screw tap comprises a tap handle and a screw tap, and is characterized in that a step-shaped cylindrical cavity is formed in the tap handle along the central line and is formed by an upper cylindrical hole and a lower cylindrical hole; the opening of the cylindrical cavity is formed on the bottom end surface of the tap handle; axial guidance holes are formed on the cavity walls on two sides of the cavity; a screw tap guidance block is mounted in the cavity; a guidance pin transversely penetrating the guidance block and extending out of the guidance holes at two ends are arranged on the screw tap guidance block; a cavity-type tap installation hole is formed inside the screw tap guidance block; the screw tap is embedded and fixed in the tap installation hole; a spring is sleeved outside the screw tap guidance block at the lower part of the guidance pin; an annular spring plugging is arranged on the bottom end surface of the tap handle; both the gaps between the screw tap guidance block and the upper cylindrical hole and between the spring and the annular spring plugging range from 0.4 mm to 0.8 mm; and the gap between the spring and the lower cylindrical hole ranges from 0.4 mm to 0.8 mm. The overturning screw tap has the advantages of automatically adjusting the concentricity with internal threads of a workpiece and ensuring the processing quality of the internal threads.
Description
Technical field
The utility model relates to the cutter of field of machining, relates in particular to the button screw tap excessively of a kind of automatic adjusting and internal thread concentricity.
Background technology
In field of machining, internal thread processing technique commonly used adopts the smear metal Tapping Technology, promptly adopts molding cutters such as screw tap, internal screw cutting tool to carry out the processing of screwed hole on process equipments such as drilling machine, lathe, tapping machine.But after the time processing, screwed hole accumulates smear metal, and interior threaded surface exists burr, cut etc. smooth inadequately, therefore need remake once to cross the buckle reason to clear up and to repair.Often adopt at present and on drilling machine, carry out secondary and cross button by drilling rod promotion screw tap, the major defect of this method is: screw tap is not easy to aim at workpiece screw internal thread, because the deviation of concentricity causes internal thread to damage, how to solve the concentricity problem of descending screw tap and workpiece internal thread, become the problem that industry is paid close attention to.
The utility model content
Main purpose of the present utility model is at the problems referred to above, the button screw tap excessively of a kind of automatic adjusting and internal thread concentricity is provided, realize detaining screw tap and in descending process, regulated concentricity with the workpiece internal thread automatically, and reached and normally carried out the button operation, guaranteed the internal thread machining quality.
The technical scheme that its technical problem that solves the utility model adopts is:
The button screw tap excessively of a kind of automatic adjusting and internal thread concentricity, comprise tap holder, screw tap, it is characterized in that in the described tap holder being provided with the stepped cylindrical cavity that by upper and lower two cylindrical holes be connected to form of opening on the tap holder bottom face along center line, the described cylindrical hole diameter of going up is less than following cylindrical hole diameter, the chamber wall of described cavity both sides is provided with bar shaped pilot hole vertically, the corresponding described cylindrical hole lower end of going up, described pilot hole upper edge, its lower edge is positioned at the tap holder bottom; The cylindrical screw tap guide pad highly identical with it is housed in stepped cylindrical cavity, described screw tap guide pad top is provided with crosses guide pad and stretches out the outer guide finger of two ends pilot hole, the guide finger two ends are provided with catch, screw tap guide pad inside is provided with cavity type screw tap installing hole along center line, the screw tap setting-in is also fixed in it, and stretch out outside the screw tap installing hole screw tap lower end; At the screw tap guide pad outer cover shock mount of guide finger bottom, the tap holder bottom face is provided with the ring spring shutoff; Described screw tap guide pad and described gap of going up between cylindrical hole, spring and the ring spring shutoff are 0.4～0.8mm; Described spring and the described gap of cylindrical hole down are 0.4～0.8mm.
Described screw tap is the square toes screw tap, and correspondence is provided with square hole in the described screw tap installing hole, and the square toes setting-in of screw tap is gone in the described square hole, and fixes by the trip bolt that is screwed into from the screw tap guide pad.
Described catch is the packing ring of diameter greater than the pilot hole width, and described packing ring is fastened on described guide finger end by screw.
Described ring spring shutoff setting-in is gone in the annular groove of tap holder bottom face setting, and fixes by the trip bolt that is screwed into by tap holder handle body.
The beneficial effects of the utility model are: the Two-end Tap Applied that provides has guide pad, guide finger, screw tap is connected as a single entity and can rock descending structure, realize detaining screw tap and in descending process, regulated concentricity with the workpiece internal thread automatically, reach and normally carried out the button operation, guarantee the internal thread machining quality.
Description of drawings
Fig. 1 is that master of the present utility model looks the sectional structure schematic diagram;
Fig. 2 is a side view of the present utility model.
Among the figure: 1 tap holder, cylindrical hole on 2,3 guide fingers, 4 packing rings, 5 screws, 6 times cylindrical holes, 7 pilot holes, 8 springs, 9 fluting awl end trip bolts, 10 screw taps, 11 ring spring shutoff, 12 fluting awl end trip bolts, 13 cavity type screw tap installing holes, 14 screw tap square toes, 15 screw tap guide pads.
Below in conjunction with drawings and Examples the utility model is described in detail.
The specific embodiment
Fig. 1～Fig. 2 illustrates the button screw tap excessively of a kind of automatic adjusting and internal thread concentricity, comprise tap holder 1, screw tap 10, it is characterized in that in the above-mentioned tap holder 1 being provided with the stepped cylindrical cavity that by upper and lower two cylindrical holes 2,6 be connected to form of opening on the tap holder bottom face along center line, the diameter of last cylindrical hole 2 is less than the diameter of following cylindrical hole 6, the chamber wall of above-mentioned cavity both sides is provided with bar shaped pilot hole 7 vertically, corresponding above-mentioned cylindrical hole 2 lower ends of going up, pilot hole 7 upper edges, its lower edge is positioned at tap holder 1 bottom; The cylindrical screw tap guide pad 15 highly identical with it is housed in stepped cylindrical cavity, above-mentioned screw tap guide pad 15 tops are provided with crosses guide pad and stretches out two ends pilot hole 7 guide finger 3 outward, guide finger 3 two ends are provided with catch, in this example, above-mentioned catch adopts the packing ring 4 of diameter greater than pilot hole 7 width, and packing ring 4 is fastened on guide finger 3 ends by screw 5.Screw tap guide pad 15 inside are provided with the cavity type screw tap installing hole 13 that connects screw tap 10 along center line, screw tap 10 setting-ins are also fixed in it, in the present embodiment, above-mentioned screw tap 10 is the square toes screw tap, correspondence is provided with square hole in the screw tap installing hole 13, square toes 14 setting-ins of screw tap 10 are gone in this square hole, and fix by the trip bolt that is screwed into from screw tap guide pad 15, actually add man-hour, have on the screw tap 10 awl bars and encircle all grooves, trip bolt employing fluting awl end trip bolt 12 heads in all grooves of the ring of boring bar and reaches the purpose that fixedly secures.Stretch out outside the screw tap installing hole screw tap 10 lower ends.At the screw tap guide pad outer cover shock mount 8 of guide finger 3 bottoms, tap holder 1 bottom face is provided with ring spring shutoff 11; Above-mentioned screw tap guide pad 15 and above-mentioned gap of going up between cylindrical hole 2, spring 8 and the ring spring shutoff 11 are 0.4～0.8mm; Above-mentioned spring 8 is 0.4～0.8mm with the above-mentioned gap of cylindrical hole 6 down.
In the actual fabrication, above-mentioned ring spring shutoff 11 setting-ins are gone in the annular groove of tap holder 1 bottom face setting, and fix by the trip bolt that is screwed into by tap holder handle body, and trip bolt has adopted fluting awl end trip bolt 9 here.
The utility model course of work and principle: when the mistake button screw tap that the utility model provides is in original state, under the resilient support of spring 8, the guide finger 3 that is positioned at the spring top is in pilot hole 7 upper ends, in stepped cylindrical cavity, it is external that screw tap 10 stretches out the tap holder handle by guide pad 15 integral body of guide finger location.After drilling machine was opened, operation drilling machine drilling rod was descending, and tap holder 1 is descending, when screw tap 10 when being contacted by the workpiece internal thread (not shown) of hitch, it is descending to stop drilling rod; At this moment because of all gapped between guide pad 15 and spring 8, the ring spring shutoff 11, spring 8 and 6 of following cylindrical holes are also gapped, so rocking automatically, the guide pad 15 that is connected as a single entity, guide finger 3 and screw tap 10 integral body regulate concentric with internal thread, and be rotated in the screw thread along screw buckle by rotating screw tap 10, and it is descending and move along pilot hole 7 with guide finger to drive guide pad 15, guide finger 3, finishes the button operation.Then, the counter-rotating of operation drilling machine, the drilling machine drilling rod is up, and tap holder 1 is up, and then screw tap is up along internal thread, and it is up with the guide pad and the guide finger integral body of disjunctor, after breaking away from screw thread, under the reseting elasticity effect of spring 8, last top guide finger 3, guide finger drives guide pad 15 and screw tap 10 integral resets with its one, gets back to initial position.
The above only is a preferred embodiment of the present utility model, is not shape material of the present utility model and structure are done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
- One kind automatically regulate with the internal thread concentricity cross the button screw tap, comprise tap holder, screw tap, it is characterized in that in the described tap holder being provided with the stepped cylindrical cavity that by upper and lower two cylindrical holes be connected to form of opening on the tap holder bottom face along center line, the described cylindrical hole diameter of going up is less than following cylindrical hole diameter, the chamber wall of described cavity both sides is provided with bar shaped pilot hole vertically, the corresponding described cylindrical hole lower end of going up, described pilot hole upper edge, its lower edge is positioned at the tap holder bottom; The cylindrical screw tap guide pad highly identical with it is housed in stepped cylindrical cavity, described screw tap guide pad top is provided with crosses guide pad and stretches out the outer guide finger of two ends pilot hole, the guide finger two ends are provided with catch, screw tap guide pad inside is provided with cavity type screw tap installing hole along center line, the screw tap setting-in is also fixed in it, and stretch out outside the screw tap installing hole screw tap lower end; At the screw tap guide pad outer cover shock mount of guide finger bottom, the tap holder bottom face is provided with the ring spring shutoff; Described screw tap guide pad and described gap of going up between cylindrical hole, spring and the ring spring shutoff are 0.4～0.8mm; Described spring and the described gap of cylindrical hole down are 0.4～0.8mm.
- 2. the button screw tap excessively of automatic adjusting according to claim 1 and internal thread concentricity, it is characterized in that described screw tap is the square toes screw tap, correspondence is provided with square hole in the described screw tap installing hole, and the square toes setting-in of screw tap is gone in the described square hole, and fixes by the trip bolt that is screwed into from the screw tap guide pad.
- 3. the button screw tap excessively of automatic adjusting according to claim 1 and internal thread concentricity is characterized in that described catch is the packing ring of diameter greater than the pilot hole width, and described packing ring is fastened on described guide finger end by screw.
- According to claim 1,2 or 3 described automatic adjustings and internal thread concentricity cross the button screw tap, it is characterized in that described ring spring shutoff setting-in goes in the annular groove that the tap holder bottom face is provided with, and fix by the trip bolt that is screwed into by tap holder handle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203159194U CN201586803U (en) | 2009-11-26 | 2009-11-26 | Overthreading screw tap capable of self-adjusting concentricity with internal threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203159194U CN201586803U (en) | 2009-11-26 | 2009-11-26 | Overthreading screw tap capable of self-adjusting concentricity with internal threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201586803U true CN201586803U (en) | 2010-09-22 |
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ID=42746570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203159194U Expired - Fee Related CN201586803U (en) | 2009-11-26 | 2009-11-26 | Overthreading screw tap capable of self-adjusting concentricity with internal threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201586803U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120278A (en) * | 2010-11-24 | 2011-07-13 | 深圳市大富科技股份有限公司 | Thread machining tool and method, and connector thread machining method and machine tool |
| CN102500844A (en) * | 2011-11-17 | 2012-06-20 | 许晓华 | Screw tap positioning device |
| CN105458422A (en) * | 2015-03-06 | 2016-04-06 | 新兴重工湖北三六一一机械有限公司 | Thread tapping tool for lower portion of deep hole |
-
2009
- 2009-11-26 CN CN2009203159194U patent/CN201586803U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120278A (en) * | 2010-11-24 | 2011-07-13 | 深圳市大富科技股份有限公司 | Thread machining tool and method, and connector thread machining method and machine tool |
| CN102120278B (en) * | 2010-11-24 | 2013-04-17 | 深圳市大富科技股份有限公司 | Thread machining tool and method, and connector thread machining method |
| CN102500844A (en) * | 2011-11-17 | 2012-06-20 | 许晓华 | Screw tap positioning device |
| CN105458422A (en) * | 2015-03-06 | 2016-04-06 | 新兴重工湖北三六一一机械有限公司 | Thread tapping tool for lower portion of deep hole |
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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: 20100922 Termination date: 20101126 |