CN215237907U - Boring power head of numerical control machine tool - Google Patents
Boring power head of numerical control machine tool Download PDFInfo
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- CN215237907U CN215237907U CN202121781292.9U CN202121781292U CN215237907U CN 215237907 U CN215237907 U CN 215237907U CN 202121781292 U CN202121781292 U CN 202121781292U CN 215237907 U CN215237907 U CN 215237907U
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- cylindrical roller
- short cylindrical
- roller bearing
- shaft
- shaft sleeve
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 15
- 125000006850 spacer group Chemical group 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model provides a boring unit head of a numerical control machine, which comprises a main shaft, wherein the left end of the main shaft is sequentially provided with a shaft shoulder, the shaft shoulder is connected with an end cover, a first shaft sleeve is connected between the shaft shoulder and the end cover, the first shaft sleeve is connected with a first double-row radial short cylindrical roller bearing, the first double-row radial short cylindrical roller bearing is arranged in a way that two rows of rollers are staggered by half of an interval, an adjusting nut is arranged in the shaft shoulder, the first double-row radial short cylindrical roller bearing is connected with a second shaft sleeve, the second shaft sleeve is connected with a bidirectional thrust ball bearing, a middle spacer sleeve is connected between the bidirectional thrust ball bearings, the middle end of the main shaft is sequentially connected with a nut, the nut is connected with a fourth shaft sleeve, the fourth shaft sleeve is connected with a second double-row radial short cylindrical roller bearing, and the right end of the main shaft is sequentially connected with a sixth shaft sleeve, and the sixth shaft sleeve is connected with a single-row centripetal short cylindrical roller bearing. The utility model discloses the cost is low when the precision promotes greatly.
Description
Technical Field
The utility model belongs to the technical field of machining equipment, concretely relates to digit control machine tool boring unit head.
Background
The numerical control machine tool is an important product for social and economic development, and has important promotion significance for production and development of modern enterprises. Under the background of the era that the application market of the current numerical control machine tool is continuously developed and expanded, the improvement and the reconstruction of the numerical control machine tool become one of the most important problems in the current enterprise work.
The method is characterized in that the method is accompanied by that increasingly complex processing parts, high rotating speed, precision grade and processing efficiency are improved to become necessary conditions of a machine tool, parts with high processing precision requirements and fine surface roughness requirements are produced and generally required to be finally processed on a machine tool, a power head is required to simultaneously carry out various motion modes such as precisely controlled rotary motion, up-and-down motion and the like, the power head is a key part used for rapid processing in the machine tool, the performance and the precision of the power head directly influence the processing quality of a workpiece, a numerical control power head main shaft is a key influencing the precision, the rigidity and the thermal deformation of a boring head, and the processing precision grade and the surface roughness grade of the existing power head are not up to the standard.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough that prior art exists, the utility model provides a digit control machine tool boring unit head.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a boring power head of a numerical control machine tool comprises a main shaft, wherein a taper hole is formed in the end portion of the main shaft, the taper hole is set to be Morse 4, a shaft shoulder is sequentially arranged at the left end of the main shaft and connected with an end cover, a first shaft sleeve is connected between the shaft shoulder and the end cover and is in labyrinth seal with the end cover, the first shaft sleeve is connected with a first double-row radial short cylindrical roller bearing, the first double-row radial short cylindrical roller bearing is formed by staggering two rows of rollers by half of a distance, an adjusting nut is arranged in the shaft shoulder, the first double-row radial short cylindrical roller bearing is connected with a second shaft sleeve, the second shaft sleeve is connected with a bidirectional thrust ball bearing, a middle spacer sleeve is connected between the bidirectional thrust ball bearings, the bidirectional thrust ball bearing is connected with a third shaft sleeve, and the third shaft sleeve is connected with a first bidirectional locking nut, the first bidirectional locking nut is provided with an elastic groove, the end cover is connected with an adjusting pad far away from the shaft shoulder, the adjusting pad is connected with a box body, the box body is provided with a left end inner cavity, a middle end inner cavity and a right end inner cavity, the left end inner cavity is in interference fit with the first double-row radial short cylindrical roller bearing and the bidirectional thrust ball bearing,
the middle end of the main shaft is sequentially connected with a nut, the nut is connected with a fourth shaft sleeve, the fourth shaft sleeve is connected with a second double-row centripetal short cylindrical roller bearing, the second double-row centripetal short cylindrical roller bearing is connected with a fifth shaft sleeve, the fifth shaft sleeve is connected with a second bidirectional locking nut, the inner cavity of the middle end is in interference fit with the second double-row centripetal short cylindrical roller bearing,
the main shaft right-hand member has connected gradually the sixth axle sleeve, the sixth axle sleeve is connected with single-row short cylindrical roller bearing entad, single-row short cylindrical roller bearing entad is connected with the back lid, the right-hand member inner chamber with single-row short cylindrical roller bearing interference fit entad, the back lid with box fixed connection, the main shaft is kept away from the shaft shoulder stretches out the one end of box is provided with the spline, the splined connection has transmission.
Further, be provided with the apron on the box, box bilateral symmetry is provided with the recess, be provided with pinhole, screw hole in the recess, pinhole, screw hole are used for fixed lathe slip table.
Furthermore, the box body is provided with oil holes corresponding to the first double-row radial short cylindrical roller bearing, the two-way thrust ball bearing and the second double-row radial short cylindrical roller bearing.
Further, the bidirectional thrust ball bearing is set to have a contact angle of 60 °.
Further, the transmission device is set to be a gear transmission device or a belt transmission device.
Has the advantages that: the radial force of the utility model is born by the first double-row centripetal short cylindrical roller bearing, the diameter of the roller is smaller, the arrangement quantity on the circumference is more, and the two rows of rollers are staggered by half of the distance, thus the bearing rigidity is good; the axial force is born by the bidirectional thrust ball bearing with a contact angle of 60 degrees, and the bearing structure can ensure that the ball does not deviate from the track under the action of centrifugal force during high-speed operation, and is stable and reliable.
Set up the second two-row and lead to short cylindrical roller bearing to make the power head realize higher precision, design this kind of structure, the cost is low when the precision promotes greatly.
Digit control machine tool boring unit head can be supporting with the hydraulic pressure or the mechanical slip table of specification for accomplish the thick smart bore hole of unipolar rigidity to cast iron, steel and non ferrous metal work piece, processes such as tapping, car terminal surface, turning round, car tang, grooving and chamfer, the precision grade can reach IT7, and the thick super degree of highest machined surface can reach more than Ra1.6.
Drawings
Fig. 1 is a front view of a boring power head of a numerical control machine tool provided by the present invention;
fig. 2 is a left side view of the boring power head of the numerical control machine tool provided by the present invention;
fig. 3 is the utility model provides a pair of digit control machine tool boring unit head's cross-sectional view.
In the figure: the main shaft, 101 taper holes, 102 shaft shoulders, 103 splines, 2 end covers, 3 first shaft sleeves, 4 first double-row centripetal short cylindrical roller bearings, 5 second shaft sleeves, 6 two-way thrust ball bearings, 7 middle spacing sleeves, 8 third shaft sleeves, 9 first double-way locking nuts, 901 elastic grooves, 10 adjusting pads, 11 box bodies, 1101 left end inner cavities, 1102 middle end inner cavities, 1103 right end inner cavities, 1104 grooves, 12 nuts, 13 fourth shaft sleeves, 14 second double-row centripetal short cylindrical roller bearings, 15 fifth shaft sleeves, 16 second double-way locking nuts, 17 sixth shaft sleeves, 18 single-row centripetal short cylindrical roller bearings, 19 rear covers and 20 cover plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, the utility model provides a boring unit head of a numerical control machine tool, including a main shaft 1, the end of the main shaft 1 is provided with a taper hole 101, the taper hole 101 is set to morse 4, adopts morse taper, because of the taper is small, utilizes the principle of frictional force, can transmit certain torque, and is easy to disassemble; a shaft shoulder 102 is sequentially arranged at the left end of the main shaft 1, the shaft shoulder 102 is connected with an end cover 2, a first shaft sleeve 3 is connected between the shaft shoulder 102 and the end cover 2, and the first shaft sleeve 3 and the end cover 2 are in labyrinth seal, so that the performance is good and no contact is caused; the first shaft sleeve 3 is connected with a first double-row centripetal short cylindrical roller bearing 4, the first double-row centripetal short cylindrical roller bearing 4 is formed by arranging two rows of rollers in a staggered half-distance mode, the rigidity is better, an adjusting nut 21 is arranged in the shaft shoulder 102, the adjusting nut 21 can adjust the pre-tightening force of the first double-row centripetal short cylindrical roller bearing 4 through the first shaft sleeve 3, and sufficient contact rigidity is guaranteed; the first double-row radial short cylindrical roller bearing 4 is connected with a second shaft sleeve 5, the second shaft sleeve 5 is connected with a two-way thrust ball bearing 6, a middle spacer sleeve 7 is connected between the two-way thrust ball bearings 6, the axial length of the middle spacer sleeve 7 is processed according to the requirement of preload, the two-way thrust ball bearing 6 is connected with a third shaft sleeve 8, the third shaft sleeve 8 is connected with a first two-way locking nut 9, the first two-way locking nut 9 is screwed on the main shaft 1 to fix the third shaft sleeve 8, the first two-way locking nut 9 is provided with an elastic groove 901, and the elastic groove 901 can be locked and fixed for the second time through the screw; the end cover 2 is connected with an adjusting pad 10 far away from the shaft shoulder 102, the adjusting pad 10 is connected with a box body 11, the box body 11 is provided with a left end inner cavity 1101, a middle end inner cavity 1102 and a right end inner cavity 1103, the left end inner cavity 1101 is in interference fit with the first double-row radial short cylindrical roller bearing 4 and the two-way thrust ball bearing 6,
the middle end of the main shaft 1 is sequentially connected with a nut 12, the nut 12 is connected with a fourth shaft sleeve 13, the fourth shaft sleeve 13 is connected with a second double-row centripetal short cylindrical roller bearing 14, the second double-row centripetal short cylindrical roller bearing 14 is connected with a fifth shaft sleeve 15, the fifth shaft sleeve 15 is connected with a second bidirectional locking nut 16, the middle end inner cavity 1102 is in interference fit with the second double-row centripetal short cylindrical roller bearing 14,
the 1 right-hand member of main shaft has connected gradually sixth axle sleeve 17, sixth axle sleeve 17 is connected with single-row centripetal short cylindrical roller bearing 18, single-row centripetal short cylindrical roller bearing 18 is connected with back lid 19, right-hand member inner chamber 1103 with single-row centripetal short cylindrical roller bearing 18 interference fit, back lid 19 with box 11 fixed connection, main shaft 1 is kept away from shoulder 102 stretches out the one end of box 11 is provided with spline 103, spline 103 is connected with transmission.
In practical application, be provided with apron 20 on the box 11, box 11 bilateral symmetry is provided with recess 1104, be provided with pinhole, screw hole in the recess 1104, pinhole, screw hole are used for fixed lathe slip table.
In practical application, the box body 11 is provided with oil holes corresponding to the first double-row radial short cylindrical roller bearing 4, the two-way thrust ball bearing 6 and the second double-row radial short cylindrical roller bearing 14, and the oil holes are convenient for adding lubricating oil regularly.
In practical application, the two-way thrust ball bearing 6 is set to have a contact angle of 60 degrees, and the structure of the two-way thrust ball bearing 6 can prevent the balls from deviating from the track under the action of centrifugal force when the two-way thrust ball bearing runs at high speed.
In practical applications, the transmission is configured as a gear transmission or a belt transmission.
The working principle is as follows:
the utility model relates to a digit control machine tool boring unit head, through first double row centripetal short cylindrical roller bearing 4, two-way thrust ball bearing 6, the second double row centripetal short cylindrical roller bearing 14, single row centripetal short cylindrical roller bearing 18 supports in the box 11, the front end adopts first double row centripetal short cylindrical roller bearing 4 to bear the radial force, through match grinding the main shaft journal, can obtain higher cooperation precision and contact rigidity, and the pretightning force of first double row centripetal short cylindrical roller bearing 4 can be adjusted through adjusting nut 21, in order to guarantee sufficient contact rigidity, the diameter of the bearing roller is less, the number of rows on the circumference is more, and two rows of rollers stagger half interval arrangement, consequently bear the rigidity good, the axial force is born by 60 contact angle's two-way thrust ball bearing 6, the bearing structure can make the ball can not deviate from the track under the centrifugal force effect when high-speed operation, the axial length of the middle spacer 7 is set according to the requirement of preload, when the adjusting nut 21 adjusts the inner ring of the radial bearing, the pretightening force of the bidirectional thrust ball bearing 6 is fixed, so the arrangement makes the bearing adjustment simple. The second double-row centripetal short cylindrical roller bearing 14 greatly improves the precision of the main shaft 1, and is convenient to install and more stable and reliable to process. The main shaft 1 is deformed by heating and can automatically extend backwards, and the rollers of the single-row centripetal short cylindrical roller bearing 18 can axially move in the outer ring, so that the stable transmission of the main shaft 1 is ensured.
The foregoing shows and describes the general principles, essential features and advantages of the present invention, with the understanding that the foregoing and following descriptions, as well as the appended drawings, are intended to illustrate and not limit the scope of the invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the present invention is to provide a person skilled in the art with the ability to understand the contents of the present invention and implement the same, and not to limit the scope of the present invention.
Claims (5)
1. The utility model provides a digit control machine tool boring unit head which characterized in that: the novel high-speed axial thrust bearing comprises a main shaft (1), wherein a taper hole (101) is formed in the end portion of the main shaft (1), the taper hole (101) is set to be Morse number 4, a shaft shoulder (102) is sequentially arranged at the left end of the main shaft (1), the shaft shoulder (102) is connected with an end cover (2), a first shaft sleeve (3) is connected between the shaft shoulder (102) and the end cover (2), the first shaft sleeve (3) and the end cover (2) are in labyrinth seal, the first shaft sleeve (3) is connected with a first double-row radial short cylindrical roller bearing (4), the first double-row radial short cylindrical roller bearing (4) is formed by staggering two rows of rollers for half of intervals, an adjusting nut (21) is arranged in the shaft shoulder (102), the first double-row radial short cylindrical roller bearing (4) is connected with a second shaft sleeve (5), and the second shaft sleeve (5) is connected with a bidirectional thrust ball bearing (6), the middle spacer sleeve (7) is connected between the two-way thrust ball bearings (6), the two-way thrust ball bearings (6) are connected with a third shaft sleeve (8), the third shaft sleeve (8) is connected with a first two-way locking nut (9), the first two-way locking nut (9) is provided with an elastic groove (901), the end cover (2) is far away from the shaft shoulder (102) and is connected with an adjusting pad (10), the adjusting pad (10) is connected with a box body (11), the box body (11) is provided with a left end inner cavity (1101), a middle end inner cavity (1102) and a right end inner cavity (1103), the left end inner cavity (1101) is in interference fit with the first two-row radial short cylindrical roller bearings (4) and the two-way thrust ball bearings (6),
the middle end of the main shaft (1) is sequentially connected with a nut (12), the nut (12) is connected with a fourth shaft sleeve (13), the fourth shaft sleeve (13) is connected with a second double-row centripetal short cylindrical roller bearing (14), the second double-row centripetal short cylindrical roller bearing (14) is connected with a fifth shaft sleeve (15), the fifth shaft sleeve (15) is connected with a second bidirectional locking nut (16), a middle end inner cavity (1102) and the second double-row centripetal short cylindrical roller bearing (14) are in interference fit,
the utility model discloses a box, including main shaft (1), first end cover (17), sixth axle cover (17) are connected with single-row centripetal short cylindrical roller bearing (18), single-row centripetal short cylindrical roller bearing (18) are connected with back lid (19), right-hand member inner chamber (1103) with single-row centripetal short cylindrical roller bearing (18) interference fit, back lid (19) with box (11) fixed connection, main shaft (1) is kept away from shoulder (102) stretches out the one end of box (11) is provided with spline (103), spline (103) are connected with transmission.
2. The boring power head of the numerical control machine tool according to claim 1, characterized in that: be provided with apron (20) on box (11), box (11) bilateral symmetry is provided with recess (1104), be provided with pinhole, screw hole in recess (1104), pinhole, screw hole are used for fixed lathe slip table.
3. The boring power head of the numerical control machine tool according to claim 1, characterized in that: and the box body (11) is provided with oil holes corresponding to the first double-row radial short cylindrical roller bearing (4), the two-way thrust ball bearing (6) and the second double-row radial short cylindrical roller bearing (14).
4. The boring power head of the numerical control machine tool according to claim 1, characterized in that: the two-way thrust ball bearing (6) is set to have a contact angle of 60 degrees.
5. The boring power head of the numerical control machine tool according to claim 1, characterized in that: the transmission device is set to be a gear transmission device or a belt transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121781292.9U CN215237907U (en) | 2021-08-02 | 2021-08-02 | Boring power head of numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121781292.9U CN215237907U (en) | 2021-08-02 | 2021-08-02 | Boring power head of numerical control machine tool |
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| Publication Number | Publication Date |
|---|---|
| CN215237907U true CN215237907U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121781292.9U Active CN215237907U (en) | 2021-08-02 | 2021-08-02 | Boring power head of numerical control machine tool |
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| CN (1) | CN215237907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453980A (en) * | 2022-03-10 | 2022-05-10 | 兰州理工大学 | Interference magnitude regulating and controlling device and method for interference connection of high-speed electric spindle and bearing |
-
2021
- 2021-08-02 CN CN202121781292.9U patent/CN215237907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453980A (en) * | 2022-03-10 | 2022-05-10 | 兰州理工大学 | Interference magnitude regulating and controlling device and method for interference connection of high-speed electric spindle and bearing |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20231218 Address after: 116000 rooms 7-8, building 1, Dehua community, Xinhua office, Wafangdian City, Dalian City, Liaoning Province Patentee after: WAFANGDIAN LONGXU MACHINE TOOL ACCESSORIES CO.,LTD. Address before: 224042 Yannan electromechanical Industrial Park (No. 3, Weisi Road), Gangzhong sub district office, Yandu District, Yancheng City, Jiangsu Province Patentee before: YANCHENG XINHAICHUAN ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. |