CN205085430U - General boring grab of tubulose work piece - Google Patents
General boring grab of tubulose work piece Download PDFInfo
- Publication number
- CN205085430U CN205085430U CN201520765740.4U CN201520765740U CN205085430U CN 205085430 U CN205085430 U CN 205085430U CN 201520765740 U CN201520765740 U CN 201520765740U CN 205085430 U CN205085430 U CN 205085430U
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- China
- Prior art keywords
- external diameter
- bearing pin
- tubular workpiece
- root
- type stay
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- Expired - Fee Related
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Abstract
The utility model discloses a general boring grab of tubulose work piece, it includes the base, sells axle, snap washer, nut and drill bushing, pivort fixation is in on the base, the round pin axle is mainly by the triplex, including the left root that is located the round pin axle that corresponds with the drill bushing, round pin axle and the intermediate part on right side and the fastening portion that is used for emboliaing snap washer and nut that the drill bushing corresponds, the external diameter of root is greater than the external diameter of intermediate part, the external diameter of intermediate part is greater than the external diameter of fastening portion the intermediate part still overlaps there is boss type stay tube, the internal diameter of boss type stay tube equals the external diameter of intermediate part, the external diameter of the boss of boss type stay tube equals the external diameter of root, the external diameter of the basement of boss type stay tube is greater than the internal diameter of tubulose work piece. The utility model discloses a general boring grab of tubulose work piece has machining precision height, stable performance, simple structure, long service life, is applicable to the advantages such as tubulose work piece of various internal diameters.
Description
Technical field
The utility model relates to field of machining, particularly relates to a kind of tubular workpiece General piercing fixture.
Background technology
Existing tubular workpiece boring grab generally comprises pedestal 1, bearing pin 2 ', open washer 4, nut 5 and drill bushing 3, and the external diameter of described bearing pin 2 ' equals the internal diameter of tubular workpiece 6, as shown in Figure 1.During use, tubular workpiece 6 is inserted in bearing pin 2 ', snaps in open washer 4, fastening nut 5, just can carry out Drilling operation to tubular workpiece 6.But the external diameter due to bearing pin 2 ' equals the internal diameter of tubular workpiece 6, when Drilling operation, the easy penetrating tubular workpiece 6 of drill bit 7 damages bearing pin 2 ', reduces the service life of tubular workpiece boring grab.In order to improve this defect, Fig. 2 improves existing tubular workpiece boring grab, its bearing pin 2 ' ' the external diameter of root equal the internal diameter of tubular workpiece 6, bearing pin 2 ' corresponding after bore area ' external diameter be less than the internal diameter of tubular workpiece 6, when drill bit 7 penetrating tubular workpiece 6, the damage that drill bit is from bearing pin 2 ' ' also have certain distance, thus prevent drill bit 6 pairs of bearing pins 2 ' '.But, adopt the tubular workpiece boring grab in Fig. 2, when drill bit 7 applies pressure downwards, due to bearing pin 2 ' ' right side not holding power upwards, tubular workpiece 6 easily offsets downwards, causes mismachining tolerance, makes the quality of product uneven.In addition, it is no matter the tubular workpiece boring grab in Fig. 1 or Fig. 2, it is all only applicable to the processing of the tubular workpiece 6 of same pipe diameter size, if the internal diameter of tubular workpiece 6 changes, then need the fixture more renewed, the cost of manufacture of fixture is high, and depositing of fixture also can occupy a large amount of spaces, increases the operating cost of factory further.
The content of utility model
The utility model is intended to solve in background technology the problem mentioned, and provides that a kind of machining accuracy is high, stable performance, structure is simple, shelf life is long, be applicable to the tubular workpiece General piercing fixture of various tubular workpiece internal diameter.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of tubular workpiece General piercing fixture, it comprises pedestal, bearing pin, open washer, nut and drill bushing, described bearing pin is fixed on described pedestal, described bearing pin forms primarily of three parts, comprise the root in the left side being positioned at bearing pin corresponding to drill bushing, the pars intermedia on the bearing pin that drill bushing is corresponding and right side thereof, and for being inserted in the fastening part of open washer and nut, the external diameter of described root is greater than the external diameter of described pars intermedia, the external diameter of described pars intermedia is greater than the external diameter of described fastening part, also overlap at described pars intermedia and have boss type stay pipe, the internal diameter of described boss type stay pipe equals the external diameter of described pars intermedia, the external diameter of the boss of described boss type stay pipe equals the external diameter of described root, the external diameter of the substrate of described boss type stay pipe is greater than the internal diameter of tubular workpiece, described tubular workpiece General piercing fixture also comprises tubulose expansion tube.
As the technical scheme that the utility model improves, the internal diameter of described tubulose expansion tube equals the external diameter of described bearing pin root, lays respectively on the boss of described bearing pin root and described boss type stay pipe.
As the technical scheme that the utility model improves further, it also comprises N to tubulose expansion tube, the internal diameter of described N to tubulose expansion tube equals described N-1 to the external diameter of tubulose expansion tube, the external diameter of described N to tubulose expansion tube equals the internal diameter of tubular workpiece, wherein, N be more than or equal to 2 natural number.
beneficial effect
Tubular workpiece General piercing fixture of the present utility model, rely on the boss type stay pipe be socketed in the middle part of bearing pin, drill bit can be avoided to contact with bearing pin, damage bearing pin, also can give tubular workpiece support force upwards at right-hand member, effectively prevent tubular workpiece from offseting downward when drill bit applies pressure to tubular workpiece downwards, thus improve the precision of boring, ensure yield rate; By being socketed in the tubulose expansion tube on bearing pin and boss type stay pipe, the Drilling operation of the tubular workpiece possessing different inner diameters size can be met; When the internal diameter of tubular workpiece equals the external diameter of bearing pin root, tubulose expansion tube can be saved; When the internal diameter of tubular workpiece is greater than the external diameter of described bearing pin root, then can be inserted in one or more pairs of tubulose expansion tube in the boss portion of bearing pin root and boss type stay pipe as required, until the internal diameter of outermost one deck tubulose expansion tube equals the internal diameter of described tubular workpiece.The card entry slot that bearing pin, boss type stay pipe and tubulose expansion tube are arranged and snap in block, effectively can prevent relatively rotating between tubulose expansion tube and bearing pin and boss type stay pipe, improve the stability of this tubular workpiece General piercing fixture.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is the tubular workpiece boring grab mentioned in background technology;
Fig. 3 is wherein a kind of embodiment of tubular workpiece General piercing fixture of the present utility model;
Fig. 4 is another embodiment of tubular workpiece General piercing fixture of the present utility model;
Fig. 5 is the perspective view of bearing pin;
Fig. 6 is the right view of bearing pin;
Fig. 7 is the perspective view of boss type stay pipe;
Fig. 8 is the top view of boss type stay pipe;
Fig. 9 and Figure 10 is the perspective view of the different visual angles of tubulose expansion tube;
Figure 11 is the top view of tubulose expansion tube.
Detailed description of the invention
Now by reference to the accompanying drawings detailed description of the invention of the present utility model is described in detail.
As shown in Figure 3, tubular workpiece General piercing fixture of the present utility model, comprise pedestal 1, bearing pin 2, open washer 4, nut 5 and drill bushing 3, bearing pin 2 is fixed on pedestal 1, bearing pin 2 forms primarily of three parts, comprise the root 21 in the left side of the bearing pin 2 being positioned at drill bushing 3 correspondence, the bearing pin 2 of drill bushing 3 correspondence and the pars intermedia 22 on right side thereof, and for being inserted in the fastening part 23 of open washer 4 and nut 5, the external diameter of root 21 is greater than the external diameter of pars intermedia 22, the external diameter of pars intermedia 22 is greater than the external diameter of fastening part 23, also overlap at pars intermedia 22 and have boss type stay pipe 8, the internal diameter of boss type stay pipe 8 equals the external diameter of pars intermedia 22, the external diameter of the boss 82 of boss type stay pipe 8 equals the external diameter of root 21, the external diameter of the substrate 81 of boss type stay pipe 8 is greater than the internal diameter of tubular workpiece 6.When the internal diameter of tubular workpiece 6 is less and when just equaling the external diameter of bearing pin root 21, this fixture does not need to increase other annex again, tubular workpiece 6 is only needed to be inserted in bearing pin root 2 before Drilling operation, and then be inserted in boss type stay pipe 8, in boss 82 tubular workpiece 6, substrate 81 supports the right-hand member of tubular workpiece 6, then open washer 4 is snapped in, tightening nut 5, rely on the boss 82 of bearing pin root 21 and boss type stay pipe 8 to give the two ends support force upwards of tubular workpiece 6, effectively prevent tubular workpiece 6 in drilling process from offseting downwards.
When the internal diameter of tubular workpiece 6 is greater than the external diameter of bearing pin root 21, now bearing pin 2 and boss type stay pipe 8 cannot give tubular workpiece 6 enough support forces, thus need to introduce tubulose expansion tube 9, as shown in Figure 4.Tubulose expansion tube 9 is socketed on the root of bearing pin and the boss of boss type stay pipe 8 in pairs.The quantity of tubulose expansion tube 9 can be determined according to the internal diameter size of tubular workpiece 6.Such as, the consumption of tubulose expansion tube 9 is 1 right, then the internal diameter of tubulose expansion tube 9 equals the external diameter of bearing pin 2 root 21, and its external diameter equals the internal diameter of tubular workpiece 6 just.For another example, it comprises N to tubulose expansion tube 9, then the internal diameter of N to tubulose expansion tube 9 equals the external diameter of N-1 to tubulose expansion tube 9, and the external diameter of N to tubulose expansion tube 9 equals the internal diameter of tubular workpiece 6, wherein, N be more than or equal to 2 natural number.
In order to increase the stability between tubulose expansion tube 9 and bearing pin 2 and boss type stay pipe 8, prevent tubulose expansion tube 9 from relatively rotating relative to bearing pin 2 and boss type stay pipe 8, described bearing pin root 21 is provided with the card entry slot 24 concaved, as shown in Figure 5 and Figure 6.Correspondingly, the outer wall of the boss 82 of boss type stay pipe 8 is also provided with the card entry slot 83 concaved, as shown in Figure 7 and Figure 8.The inwall of tubulose expansion tube 9 is provided with match with the card entry slot 83 on the outer wall of the card entry slot 24 of bearing pin root 21 and the boss 82 of boss type stay pipe 8 snap in block 92, as shown in Fig. 9,10,11.Described card entry slot (24,83) is preferably disposed on the side away from drill bushing.When using multiple tubulose expansion tube 9, in order to prevent the mutual rotation between tubulose expansion tube 9, be also correspondingly provided with and the card entry slot 93 snapping in block 92 and match at the outer wall of tubulose expansion tube 9.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the utility model is not limited to detailed description of the invention disclosed and described above, also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although employ some specific terms in this description, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (3)
1. a tubular workpiece General piercing fixture, comprise pedestal, bearing pin, open washer, nut and drill bushing, described bearing pin is fixed on described pedestal, described bearing pin forms primarily of three parts, comprise the root in the left side being positioned at bearing pin corresponding to drill bushing, the pars intermedia on the bearing pin that drill bushing is corresponding and right side thereof, and for being inserted in the fastening part of open washer and nut, the external diameter of described root is greater than the external diameter of described pars intermedia, the external diameter of described pars intermedia is greater than the external diameter of described fastening part, it is characterized in that: also overlapping at described pars intermedia has boss type stay pipe, the internal diameter of described boss type stay pipe equals the external diameter of described pars intermedia, the external diameter of the boss of described boss type stay pipe equals the external diameter of described root, the external diameter of the substrate of described boss type stay pipe is greater than the internal diameter of tubular workpiece, described tubular workpiece General piercing fixture also comprises tubulose expansion tube.
2. tubular workpiece General piercing fixture according to claim 1, is characterized in that: the internal diameter of described tubulose expansion tube equals the external diameter of described bearing pin root, lays respectively on the boss of described bearing pin root and described boss type stay pipe.
3. tubular workpiece General piercing fixture according to claim 2, it is characterized in that: described boring grab also comprises N to tubulose expansion tube, the internal diameter of described N to tubulose expansion tube equals described N-1 to the external diameter of tubulose expansion tube, the external diameter of described N to tubulose expansion tube equals the internal diameter of tubular workpiece, wherein, N be more than or equal to 2 natural number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765740.4U CN205085430U (en) | 2015-09-30 | 2015-09-30 | General boring grab of tubulose work piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765740.4U CN205085430U (en) | 2015-09-30 | 2015-09-30 | General boring grab of tubulose work piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205085430U true CN205085430U (en) | 2016-03-16 |
Family
ID=55476152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520765740.4U Expired - Fee Related CN205085430U (en) | 2015-09-30 | 2015-09-30 | General boring grab of tubulose work piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205085430U (en) |
-
2015
- 2015-09-30 CN CN201520765740.4U patent/CN205085430U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20160930 |