CN203091756U - Spindle structure of pipe threading machine - Google Patents
Spindle structure of pipe threading machine Download PDFInfo
- Publication number
- CN203091756U CN203091756U CN 201320121903 CN201320121903U CN203091756U CN 203091756 U CN203091756 U CN 203091756U CN 201320121903 CN201320121903 CN 201320121903 CN 201320121903 U CN201320121903 U CN 201320121903U CN 203091756 U CN203091756 U CN 203091756U
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- Prior art keywords
- bearing
- threading machine
- pipe threading
- axle structure
- machine main
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Abstract
The utility model discloses a spindle structure of a pipe threading machine, which comprises a spindle and two bearings arranged at two ends of the spindle respectively, and is characterized in that one of the bearings is a double-row cylindrical roller bearing; the other bearing is a double-row tapered roller bearing; and one end of the double-row tapered roller bearing positions an inner ring via a back nut. According to the spindle structure, adjustment accuracy is high and disassembly is convenient.
Description
Technical field
The utility model relates to a kind of pipe threading machine main axle structure.
Background technology
As in the oil field oil recovery process at home and abroad, all can use parts such as drill collar, drilling rod, the characteristics of this type of part are that Workpiece length is long, and it is smaller that diameter is compared length, and just draw ratio is bigger.As shown in Figure 1, be a kind of workpiece of stone oil drill collar, an end is the circular cone external screw thread, and an end is the circular cone internal thread of coupling, and fine finishining is mainly carried out turning to the internal and external threads of end.
Above-mentioned workpiece is added man-hour, need the pipe threading machine of the large through-hole of coupling.Existing at home pipe threading machine, the pipe threading machine of large through-hole particularly, main axle structure is to guarantee precision by a pair of single-row tapered roller bearing, yet the precision of single-row tapered roller bearing also is not easy to guarantee, and service life is relatively short, in order to guarantee machining accuracy, needs the periodic replacement bearing usually, therefore single-row tapered roller bearing dismounting difficulty may damage main shaft.Thereby there is low precision in this class formation, adjusts difficulty of ratio of precision, shortcomings such as dismounting inconvenience.
Summary of the invention
For this reason, the purpose of this utility model is to provide a kind of high and pipe threading machine main axle structure for convenience detach of precision of adjusting.
The technical solution adopted in the utility model is:
A kind of pipe threading machine main axle structure comprises main shaft and each bearing that is arranged on these main shaft two ends, it is characterized in that the two bearings one is a Biserial cylindrical roller bearing, and another is a double-row conical bearing, and wherein the latter's one end is by the female internal delineation of back of the body position.
From above structure as can be seen, adopt the different bearing of structure to substitute original single-row tapered roller bearing, not only bearing capacity improves, and can satisfy the adjustment of two single-row roller bearings fully to the adjustment of double-row conical bearing, and operational reliability is higher.Comparatively speaking, the easier dismounting of double-row conical bearing has very high value for the main shaft of periodic replacement bearing.
Aforementioned tube thread chasing machine main axle structure, the two ends of described Biserial cylindrical roller bearing are all by the female location of the back of the body.
Aforementioned tube thread chasing machine main axle structure, the two ends of described main shaft are equipped with and are used for and the lathe chuck flange connecting.
Aforementioned tube thread chasing machine main axle structure, described flange coupling fitted position leaves surplus.
Aforementioned tube thread chasing machine main axle structure also is provided with the gland that mates headstock left and right sides end positions on described main shaft, gland holds the respective shaft bearing outer-ring, with the precompressed bearing.
Description of drawings
Fig. 1 is a kind of stone oil drill collar Workpiece structure schematic diagram.
Fig. 2 is according to a kind of pipe threading machine main axle structure schematic diagram of the present utility model.
Among the figure: 1. flange, 2. the back of the body is female, 3. gland, 4. biserial cylinder roller bearing, 5. the back of the body is female, 6. main shaft, 7. gear, 8. the back of the body is female, 9. double-row conical bearing.
The specific embodiment
A kind of pipe threading machine main axle structure, as shown in Figure 2, a main shaft 6 wherein is not provided with the gear 7 that is used for the power input, and this gear one end uses the shaft shoulder to carry out the rigidity location, and another section uses the back of the body female 8 to position, and is used for the adjustment of gear 7.
Back of the body mother call more accurately is a locking nut, and is extensive now female for the back of the body, can be understood by those skilled in the art.Be characterized in being used for locking, also can be used for adjusting.
Be different from the configuration mode of consistent two single-row tapered roller bearings of employing, adopt two double-row bearings to be substituted, wherein mate each bearing at main shaft 6 two ends, only one is a Biserial cylindrical roller bearing 4, is mainly used to carrying; Another is a double-row conical bearing 9, then is equivalent to the zoarium of two single-row tapered roller bearings, but has the aligning effect from body, and the latter so wherein, just an end of double-row conical bearing is by delineation position in female 2 pairs of the back of the body.
The simple adjustment, an end can be adjusted and get final product, if the adjustment of axial location for convenience, its other end also can use back of the body mother to position.
But because bearing has two, support interval also can be adjusted by another bearing.Therefore the two ends of described Biserial cylindrical roller bearing 4 are all by the female location of the back of the body, and as shown in Figure 2, the back of the body female 5 and the back of the body female 2 are used for the location of Biserial cylindrical roller bearing 4.
From above structure as can be seen, double-row conical bearing 9 is mainly used in and guarantees to adjust precision, its another section is located by rigidity, adopt the shaft shoulder, being adjusted between the two bearings is embodied on the Biserial cylindrical roller bearing, have better adjustment, under the situation that guarantees the adjustment precision, also have more bearing capacity.
In above structure, with reference to the accompanying drawings 2, clearer the showing as of configuration structure that precision keeps, the Biserial cylindrical roller bearing 4 that is used to keep radial accuracy is installed at main shaft 6 right-hand members, adopt the tapering bearing, cooperate with axle by the conical surface that encircles in it, tapering preferably adopts 12:1.
And the double-row conical bearing of the axial precision of maintenance bearing.
Further, in order to guarantee precision, also be provided with the gland 3 of coupling headstock left and right sides end positions on described main shaft 6, gland holds the respective shaft bearing outer-ring, with the precompressed bearing, constitutes assembly in advance with main shaft, easier assurance precision.
Preferably, the two ends of described main shaft 6 are equipped with and are used for and lathe chuck flange connecting 1, and it is a general configuration that flange connects, but is incorporated into gland 3, the then easier realization assembly precision of unified formation assembly.
Preferably, described flange 1 coupling fitted position leaves surplus, thereby, in use, can use the knife rest turning on the lathe to fall this surplus part, make that flange and turning system quilt on same bed body is unified, guaranteed the precision of this main axle structure.
Claims (5)
1. pipe threading machine main axle structure, comprise main shaft (6) and be arranged on each bearing at this main shaft (6) two ends, it is characterized in that, the two bearings one is Biserial cylindrical roller bearing (4), another is double-row conical bearing (9), and wherein the latter's one end is internally drawn a circle to approve the position by the back of the body female (2).
2. pipe threading machine main axle structure according to claim 1 is characterized in that, the two ends of described Biserial cylindrical roller bearing (4) are all by the female location of the back of the body.
3. pipe threading machine main axle structure according to claim 1 and 2 is characterized in that, the two ends of described main shaft (6) are equipped with and are used for and lathe chuck flange connecting (1).
4. pipe threading machine main axle structure according to claim 3 is characterized in that, described flange (1) coupling fitted position leaves surplus.
5. pipe threading machine main axle structure according to claim 1 is characterized in that, also is provided with the gland (3) of coupling headstock left and right sides end positions on described main shaft, and gland holds the respective shaft bearing outer-ring, with the precompressed bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121903 CN203091756U (en) | 2013-03-18 | 2013-03-18 | Spindle structure of pipe threading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121903 CN203091756U (en) | 2013-03-18 | 2013-03-18 | Spindle structure of pipe threading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203091756U true CN203091756U (en) | 2013-07-31 |
Family
ID=48843201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320121903 Expired - Fee Related CN203091756U (en) | 2013-03-18 | 2013-03-18 | Spindle structure of pipe threading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203091756U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382326A (en) * | 2015-11-30 | 2016-03-09 | 太原科技大学 | Mechanical disc shearing machine used for shearing thick steel plate |
| CN106269876A (en) * | 2016-08-30 | 2017-01-04 | 江苏华菱锡钢特钢有限公司 | A kind of PQF tandem mill unit |
| CN110653382A (en) * | 2019-10-16 | 2020-01-07 | 德州普利森机床有限公司 | Bearing pre-tightening method for spindle of large-through-hole headstock |
-
2013
- 2013-03-18 CN CN 201320121903 patent/CN203091756U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382326A (en) * | 2015-11-30 | 2016-03-09 | 太原科技大学 | Mechanical disc shearing machine used for shearing thick steel plate |
| CN106269876A (en) * | 2016-08-30 | 2017-01-04 | 江苏华菱锡钢特钢有限公司 | A kind of PQF tandem mill unit |
| CN110653382A (en) * | 2019-10-16 | 2020-01-07 | 德州普利森机床有限公司 | Bearing pre-tightening method for spindle of large-through-hole headstock |
| CN110653382B (en) * | 2019-10-16 | 2020-10-16 | 德州普利森机床有限公司 | Bearing pre-tightening method for spindle of large-through-hole headstock |
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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: 20130731 |