CN210615145U - High-rotating-speed high-precision combined center - Google Patents
High-rotating-speed high-precision combined center Download PDFInfo
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- CN210615145U CN210615145U CN201921693583.5U CN201921693583U CN210615145U CN 210615145 U CN210615145 U CN 210615145U CN 201921693583 U CN201921693583 U CN 201921693583U CN 210615145 U CN210615145 U CN 210615145U
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Abstract
The utility model discloses a high rotational speed high accuracy combination is top, including top, hexagon socket head cap holding screw, the adapter sleeve, thrust ball bearing, O type circle, punching press outer lane bearing, the taper sleeve, bearing and plug screw, it is top through thrust ball bearing, punching press outer lane bearing and bearing are installed in the taper sleeve, thrust ball bearing installs at top front end, punching press outer lane bearing installs between the step face of thrust ball bearing and taper sleeve, adapter sleeve threaded connection is on top front end boss, and through hexagon socket head cap holding screw fastening, in the taper sleeve front end inserts the adapter sleeve, and through O type circle sealing connection between taper sleeve and the adapter sleeve, bearing installs at the tail end, the plug screw thread screws up at the taper sleeve tail end top. The combined center is simple in structure, convenient to machine, low in cost and high in positioning accuracy, can be installed on different devices, meets the use requirements of different devices, and can also meet the machining requirements of parts in different rotating speed states such as high and low.
Description
Technical Field
The utility model belongs to the technical field of it is top, concretely relates to high rotational speed high accuracy combination is top.
Background
Machining centers of machine tool equipment commonly used at present are dead centers, namely the centers are fixed on the machine tool equipment and cannot rotate freely; when a product is processed, the center hole of the product and the center rotate relatively to generate sliding friction, so that the center hole of the product is damaged, and the positioning precision of the product is influenced; and is easy to burn, and cannot be applied to the processing condition of high rotating speed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high rotational speed high accuracy combination is top to solve the problem of proposing among the above-mentioned background art. The technical scheme of the utility model is realized like this:
a high-rotating-speed high-precision combined center comprises a center, an inner hexagonal set screw, a connecting sleeve, a thrust ball bearing, an O-shaped ring, a punching outer ring needle roller bearing, a taper sleeve, a needle roller bearing and a plug screw, wherein the center is installed in the taper sleeve through the thrust ball bearing, the punching outer ring needle roller bearing and the needle roller bearing, the thrust ball bearing is installed at the front end of the center and is positioned between a boss at the front end of the center and the taper sleeve, the thrust ball bearing is in excessive fit with the boss at the front end of the center and is tightly pressed with the taper sleeve in an interference manner, the punching outer ring needle roller bearing is installed between the thrust ball bearing and a step surface of the taper sleeve and is in interference fit with an inner ring of the taper sleeve, the connecting sleeve is in threaded connection with the boss at the front end of the center and is fastened through the inner hexagonal set screw, the front end of the taper sleeve is inserted into the, the needle bearing is arranged at the tail end of the tip and is in interference fit with the inner ring of the taper sleeve, the plug screw thread is screwed at the tail end of the taper sleeve, and the end face of the plug screw is pressed against the needle bearing side.
The utility model discloses an among the high rotational speed high accuracy combination center, taper sleeve front end inner circle is equipped with ladder groove one, ladder groove one includes groove one and groove two, and the tail end inner circle is equipped with ladder groove two, ladder groove two includes groove three and thread groove, thrust ball bearing is located in groove one, punching press outer lane bearing is located in groove two, bearing is located in the groove three, the plug screw thread is screwed up in the thread groove.
The utility model discloses an in the high rotational speed high accuracy combination is top, the adapter sleeve inboard is equipped with a protruding circle, protruding circle support press on the thrust ball bearing.
The utility model discloses an among the high rotational speed high accuracy combination center, all be filled with lubricating grease in thrust ball bearing, drawn cup needle bearing and the needle bearing.
The utility model discloses an among the high rotational speed high accuracy combination is top, the taper sleeve excircle is according to morse's tapering processing.
Implement the utility model discloses a this kind of high rotational speed high accuracy combination is top, has following beneficial effect:
the combined center is simple in structure, and each part is convenient and quick to install; the processing difficulty of each part is low, and the processing precision requirement of each part can be ensured in common processing equipment; parts such as all bearings, O-shaped rings and the like are common national standard parts, so that the cost is low and the purchase is convenient; the center can bear axial and radial forces, can freely and flexibly rotate, and can meet the part processing under the condition of high rotating speed; the centre precision is high, and parts such as centre and taper sleeve all assemble together through high accuracy bearing.
Drawings
Fig. 1 is the structure schematic diagram of the high-rotation speed and high-precision combined center of the utility model.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, the high-rotating-speed high-precision combined center comprises a center 1, an inner hexagonal set screw 2, a connecting sleeve 3, a thrust ball bearing 4, an O-shaped ring 5, a drawn outer ring needle roller bearing 6, a taper sleeve 7, a needle roller bearing 8 and a plug screw 9, wherein the center 1 is arranged in the taper sleeve 7 through the thrust ball bearing 4, the drawn outer ring needle roller bearing 6 and the needle roller bearing 8, the thrust ball bearing 4 is arranged at the front end of the center 1 and is positioned between a boss at the front end of the center 1 and the taper sleeve 7, the thrust ball bearing 4 is in excessive fit with the boss at the front end of the center 1 and is tightly pressed with the taper sleeve 7 in an interference manner, and the thrust ball; the drawn cup needle roller bearing 6 is arranged between the thrust ball bearing 4 and the step surface of the taper sleeve 7 and is in interference fit with the inner ring of the taper sleeve 7, and the drawn cup needle roller bearing 6 bears radial load; the connecting sleeve 3 is in threaded connection with a boss at the front end of the center 1 and is fastened through an inner hexagonal set screw 2, a convex ring 31 is arranged on the inner side of the connecting sleeve 3, the convex ring 31 is pressed against a thrust ball bearing 4, the front end of a taper sleeve 7 is inserted into the connecting sleeve 3, the taper sleeve 7 is in sealing connection with the connecting sleeve 3 through an O-shaped ring 5, the center 1, the connecting sleeve 3 and the taper sleeve 7 are installed in a matched mode, the integrity and the mechanical strength of the center are enhanced while the mechanical performance is ensured, and the O-shaped ring 5 is arranged, so that the center 1, the connecting sleeve 3 and the taper sleeve 7 form a good sealing space, the sealing performance of the whole center is enhanced, the lubricating grease among the thrust ball bearing 4, the needle roller bearing 6 with a punched outer ring, the center 1, the connecting sleeve 3 and the taper sleeve 7 is effectively prevented from overflowing and leaking, the lubricating grease among the center 1, the connecting sleeve 3 and the taper, the use precision and the use performance of the center are ensured, and the service life of the center is prolonged; the needle bearing 8 is arranged at the tail end of the center 1 and is in interference fit with the inner ring of the taper sleeve 7, and the needle bearing 6 bears radial load; the screw plug 9 is screwed on the tail end of the taper sleeve 7, the end face of the screw plug is pressed against the needle bearing 8 side, the screw plug 9 can effectively prevent the leakage of lubricating grease in the needle bearing 8 and the sealing taper sleeve 7, and the installation and the disassembly are very simple and convenient; lubricating grease is filled in the thrust ball bearing 4, the drawn cup needle roller bearing 6 and the needle roller bearing 8, and the functions of cooling and lubricating are achieved; the excircle of the taper sleeve 7 can be processed according to the size of a taper hole in machine tool equipment, meets the matching with the machine tool equipment and is generally processed according to Morse taper.
The inner ring of the front end of the taper sleeve 7 is provided with a first stepped groove, the first stepped groove comprises a first groove 71 and a second groove 72, the inner ring of the tail end of the taper sleeve is provided with a second stepped groove, the second stepped groove comprises a third groove 73 and a threaded groove 74, the thrust ball bearing 4 is positioned in the first groove 71, the needle roller bearing 6 of the drawn outer ring is positioned in the second groove 72, the needle roller bearing 8 is positioned in the third groove 73, and the screw plug is screwed in the threaded groove 74.
When the device is used, the end of the taper sleeve 7 is arranged in the device, the end of the tip 1 directly props against a product, and the tip 1 is fixed by the thrust ball bearing 4 along the axial direction and has no displacement; the excircle needle bearing 6 and the excircle needle bearing 8 which are punched along the radial direction are fixed and can freely and flexibly rotate; the machining and the model selection of each part are high-precision parts, the thrust ball bearing 4, the stamping excircle needle roller bearing 6 and the needle roller bearing 8 are parts capable of meeting high rotating speed, and the center 1 is fixed by the thrust ball bearing 4 along the axial direction, so that no axial displacement is ensured after the product is supported; the centre 1 rotates freely, so that the centre 1 and the product do not rotate relatively after the product is supported, the situations that the conventional centre can be burnt and the like do not occur, and finally the centre 1 can meet the requirements of high precision and high rotating speed.
The present invention is not limited to the embodiments, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A high-rotating-speed high-precision combined center is characterized by comprising a center (1), an inner hexagonal set screw (2), a connecting sleeve (3), a thrust ball bearing (4), an O-shaped ring (5), a punching outer ring needle roller bearing (6), a taper sleeve (7), a needle roller bearing (8) and a plug screw (9), wherein the center (1) is installed in the taper sleeve (7) through the thrust ball bearing (4), the punching outer ring needle roller bearing (6) and the needle roller bearing (8), the thrust ball bearing (4) is installed at the front end of the center (1) and is positioned between a boss at the front end of the center (1) and the taper sleeve (7), the thrust ball bearing (4) is in excessive fit with the boss at the front end of the center (1) and is in interference compression with the taper sleeve (7), the punching outer ring needle roller bearing (6) is installed between step surfaces of the thrust ball bearing (4) and the taper sleeve (7), the connecting sleeve (3) is in threaded connection with a boss at the front end of the tip (1) and is fastened through the inner hexagonal set screw (2), the front end of the taper sleeve (7) is inserted into the connecting sleeve (3), the taper sleeve (7) and the connecting sleeve (3) are in sealed connection through the O-shaped ring (5), the needle bearing (8) is installed at the tail end of the tip (1) and is in interference fit with the inner ring of the taper sleeve (7), the plug screw (9) is in threaded connection with the tail end of the taper sleeve (7), and the end face of the plug screw abuts against the side of the needle bearing (8).
2. A high-speed high-precision combined center according to claim 1, wherein the inner ring at the front end of the taper sleeve (7) is provided with a first stepped groove which comprises a first groove (71) and a second groove (72), the inner ring at the tail end of the taper sleeve is provided with a second stepped groove which comprises a third groove (73) and a threaded groove (74), the thrust ball bearing (4) is positioned in the first groove (71), the needle roller bearing (6) at the punched outer ring is positioned in the second groove (72), the needle roller bearing (8) is positioned in the third groove (73), and the plug screw is screwed in the threaded groove (74).
3. A high-speed and high-precision combined center according to claim 1, wherein a convex ring (31) is arranged on the inner side of the connecting sleeve (3), and the convex ring (31) is pressed against the thrust ball bearing (4).
4. The high-rotation-speed high-precision combined center according to claim 1, wherein the thrust ball bearing (4), the drawn outer ring needle roller bearing (6) and the needle roller bearing (8) are filled with grease.
5. A high-speed high-precision combined centre according to claim 1, characterized in that the outer circle of the taper sleeve (7) is processed according to morse taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921693583.5U CN210615145U (en) | 2019-10-11 | 2019-10-11 | High-rotating-speed high-precision combined center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921693583.5U CN210615145U (en) | 2019-10-11 | 2019-10-11 | High-rotating-speed high-precision combined center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210615145U true CN210615145U (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921693583.5U Active CN210615145U (en) | 2019-10-11 | 2019-10-11 | High-rotating-speed high-precision combined center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210615145U (en) |
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2019
- 2019-10-11 CN CN201921693583.5U patent/CN210615145U/en active Active
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