CN212976739U - Collet type precision spindle - Google Patents
Collet type precision spindle Download PDFInfo
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- CN212976739U CN212976739U CN202021267619.6U CN202021267619U CN212976739U CN 212976739 U CN212976739 U CN 212976739U CN 202021267619 U CN202021267619 U CN 202021267619U CN 212976739 U CN212976739 U CN 212976739U
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Abstract
The utility model relates to the technical field of numerical control lathe workpieces, and discloses a collet chuck type precision spindle, which comprises a spindle core 1, wherein a sleeve 2 is arranged outside the spindle core; a front sealing ring 3, a spacing ring 4 and a rear sealing ring 5 are sequentially arranged in a gap between the shaft core 1 and the sleeve 2 along the axial direction, and bearings B1 connected between the shaft core 1 and the sleeve 2 are arranged on two sides of the front sealing ring 3 and the rear sealing ring 5; one end of the shaft core 1 is provided with a pressing ring 7, and a front gland 8 compresses the pressing ring 7; the adapter plate 9 is fixed on the shaft core 1 outside the compression ring 7 and is pressed and fixed through the protective cover 10; the other end of the shaft core 1 is connected with a synchronous belt wheel 11, one side of the synchronous belt wheel 11 is fixed by a locking ring 12, and the other side is fastened by a locking nut. The main shaft is embedded in a main shaft of a numerical control lathe with a corresponding specification, and a three-point type radial locking nut is adopted to limit radial and axial runout of a main shaft revolving body; and the gland at the rear end of the shaft core and the synchronous belt pulley are integrated, so that the requirement for reducing the size is met, the structure is simplified, and the stability is improved.
Description
Technical Field
The utility model relates to a numerical control lathe work piece technical field especially relates to a collet chuck formula precision spindle.
Background
The lathe spindle refers to a shaft on a lathe for driving a workpiece or a cutter to rotate. The main shaft component is generally composed of a main shaft, a bearing, a transmission member (gear or pulley), and the like. The machine is mainly used for supporting transmission parts such as gears and belt wheels and transmitting motion and torque, such as a machine tool spindle; some are used to clamp a workpiece, such as a mandrel. Except for planing machines, broaching machines and other machine tools with linear motion as main motion, most machine tools are provided with a main shaft part; the movement accuracy and structural rigidity of the spindle unit are important factors determining the machining quality and the cutting efficiency.
When a traditional machine tool spindle rotates, strong vibration, impact and certain noise are generated, wherein the stability performance is not ideal all the time, so that the service life and the working performance are influenced after the machine tool spindle is used for a long time, and the processing quality and the precision of workpieces are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a collet chuck formula precision spindle solves current main shaft poor stability's problem.
The utility model discloses a realize through following scheme:
a collet chuck type precision spindle comprises a spindle core, a spindle sleeve and a spindle sleeve, wherein the spindle core is externally provided with a sleeve; a front sealing ring, a spacing ring and a rear sealing ring are sequentially arranged in a gap between the shaft core and the sleeve along the axial direction, and bearings are arranged on two sides of the front sealing ring and the rear sealing ring;
one end of the shaft core is provided with a pressing ring, and the front pressing cover presses the pressing ring; the adapter plate is fixed on the shaft core outside the compression ring and is compressed and fixed through the protective cover; the other end of the shaft core is connected with a synchronous belt wheel, one side of the synchronous belt wheel is fixed by a locking ring, and the other side of the synchronous belt wheel is fastened by a locking nut.
Further, the pressing ring is fixed on the shaft core through a pin and a first screw; the front gland is connected with the sleeve through a second screw; the adapter plate is fixed on the shaft core through a third screw; the protective cover is connected with the sleeve through a fourth screw; the synchronous belt wheel is connected with the shaft core through a flat key, one side of the synchronous belt wheel is connected with the sleeve through a fifth screw, and the other side of the synchronous belt wheel is fastened by a locking nut.
Furthermore, the compression ring is sleeved on the shaft core, matched holes are formed in the shaft core and the compression ring, and the pin penetrates through the holes in the shaft core and the compression ring; the first screw is arranged above the pin; and a sealing ring is arranged on the periphery of the compression ring.
Furthermore, the bearing is an angular contact bearing, the inner ring of the bearing is sleeved on the shaft core, and the outer ring of the bearing is embedded in a groove which is arranged on the sleeve and matched with the sleeve; the first screw is a hexagon socket flat end fastening screw; the second screw, the third screw, the fourth screw and the fifth screw are all hexagon socket head cap screws; the flat key is a common flat key.
Further, the diameter of the shaft core is reduced in a stepped mode along the direction from the front sealing ring to the locking nut.
Furthermore, the front sealing ring and the rear sealing ring are both composed of an inner sealing ring and an outer sealing ring, and the outer sealing ring is sleeved on the outer side of the inner sealing ring.
Furthermore, the material of the main shaft is hard steel.
Furthermore, a chuck is arranged in the shaft core of the main shaft and is connected with a three-jaw seat of the numerical control lathe through the chuck.
The utility model has the advantages of it is following:
the main shaft is embedded in a main shaft of a numerical control lathe with a corresponding specification, and three-point locking is realized through a fourth screw, a fifth screw and a locking nut in the radial direction to limit radial runout of a main shaft revolving body; the axial direction is fixed through a sleeve to limit the radial runout of the main shaft revolving body; the gland at the rear end of the shaft core and the synchronous belt wheel are integrated, so that the requirement of reducing the size is met, the structure is simplified, and the stability is improved;
the front sealing ring and the rear sealing ring are both composed of an inner sealing ring and an outer sealing ring, and at least 2 layers of waterproof are arranged, so that the damage of the bearing caused by water leakage is avoided.
Drawings
FIG. 1 is a schematic view of a clamp-on precision spindle;
FIG. 2 is an external structural view of the clamping type precision spindle;
FIG. 3 is a view of the construction of the mandrel;
FIG. 4 is a schematic view of the front and rear seal rings;
in the figure: 1-shaft core, 2-sleeve, 3-front sealing ring, 4-spacing ring, 5-rear sealing ring, 6-pin, 7-pressing ring, 8-front pressing cover, 9-adapter plate, 10-protective cover, 11-synchronous pulley, 12-locking cover, B1-bearing, B2-first screw, B3-second screw, B4-third screw, B5-fourth screw, B6-fifth screw, B7-flat key and B8-locking nut.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
A collet chuck type precision spindle is shown in figures 1 and 2 and comprises a spindle core 1, a sleeve 2 and a spindle sleeve, wherein the spindle core 1 is externally provided with the sleeve; a front sealing ring 3, a spacing ring 4 and a rear sealing ring 5 are sequentially arranged in a gap between the shaft core 1 and the sleeve 2 along the axial direction; bearings B1 are arranged on two sides of the front sealing ring 3 and the rear sealing ring 5;
one end of the shaft core 1 is provided with a pressing ring 7, and a front gland 8 compresses the pressing ring 7; the adapter plate 9 is fixed on the shaft core 1 outside the compression ring 7 and is pressed and fixed through the protective cover 10; the other end of the shaft core 1 is connected with a synchronous belt wheel 11, one side of the synchronous belt wheel 11 is fixed by a locking ring 12, and the other side is fastened by a locking nut.
The press ring 7 is fixed on the shaft core 1 through a pin 6 and a first screw B2; the front gland 8 is connected with the sleeve 2 through a second screw B3; the adapter plate 9 is fixed on the shaft core 1 through a third screw B4; the protecting cover 10 is connected with the sleeve 2 through a fourth screw B5; the timing pulley 11 is connected to the shaft core 1 by a flat key B7, one side thereof is connected to the sleeve 2 by a fifth screw B6, and the other side thereof is fastened by a lock nut B8.
The bearing B1 is an angular contact bearing, the inner ring of the bearing B1 is sleeved on the shaft core 1, and the outer ring of the bearing B1 is embedded in a groove which is arranged on the sleeve 2 and matched with the sleeve, so that the high-speed rotation of the shaft core 1 can be ensured; the first screw B2 is a hexagon socket flat end set screw; the second screw B3, the third screw B4, the fourth screw B5 and the fifth screw B6 are all socket head cap head screws; the flat key B7 is a common flat key. The radial and axial runout of the main shaft revolving body is limited by the locking nut of the three-point radial locking of the screw.
The shaft core 1 of the main shaft is internally provided with a chuck which is connected with a three-jaw seat of the numerical control lathe.
When the numerical control lathe is in work, the synchronous belt wheel is embedded in a main shaft of a numerical control lathe with a corresponding specification, and a synchronous belt wheel at the rear end of a shaft core is connected with a servo motor of the numerical control lathe through a timing belt to carry out power input; the inner hole at the front end of the shaft core is provided with a chuck, and the rear end of the chuck is connected with a three-jaw seat of a numerical control machine tool and then is connected with an external pull rod, so that the chuck can clamp a workpiece.
The beneficial effect of this embodiment is: the main shaft is embedded in a main shaft of a numerical control lathe with a corresponding specification, and a three-point type radial locking nut is adopted to limit radial and axial runout of a main shaft revolving body; and the gland at the rear end of the shaft core and the synchronous belt pulley are integrated, so that the requirement for reducing the size is met, the structure is simplified, and the stability is improved.
As shown in figure 2, the diameter of the shaft core 1 is reduced in a stepped manner along the direction from the front sealing ring 3 to the locking nut B8, the main shaft is made of hard steel, namely 42CrMo, and the hard steel is subjected to quenching and tempering treatment to ensure higher strength, toughness and fatigue limit.
As shown in fig. 3, the front seal ring 3 and the rear seal ring 5 are both composed of an inner seal ring and an outer seal ring, at least 2 layers of waterproof are arranged, and damage to the bearing B1 due to water leakage is avoided; in addition, the press ring 7 is sleeved on the shaft core 1, the shaft core 1 and the press ring 7 are both provided with matched holes, and the pin 6 penetrates through the holes of the shaft core 1 and the press ring 7; the first screw B2 is arranged above the pin 6; the periphery of the pressing ring 7 is provided with a sealing ring, so that the waterproof performance is better and the safety is higher.
The collet chuck type precision spindle of the utility model realizes three-point locking through the fourth screw, the fifth screw and the locking nut in the radial direction, and limits the radial runout of the revolving body of the spindle; the axial direction is fixed through the sleeve, so that the radial runout of the main shaft revolving body is limited, and the stability of the main shaft is ensured; the turning precision of the small-row-cutter numerical control lathe can be greatly improved, and the vibration is reduced.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (8)
1. A collet chuck type precision spindle is characterized by comprising a spindle core (1) provided with a sleeve (2) at the outer part; a front sealing ring (3), a spacing ring (4) and a rear sealing ring (5) are sequentially arranged in a gap between the shaft core (1) and the sleeve (2) along the axial direction; bearings (B1) are arranged on two sides of the front sealing ring (3) and the rear sealing ring (5);
one end of the shaft core (1) is provided with a pressing ring (7), and a front gland (8) compresses the pressing ring (7); the adapter plate (9) is fixed on the shaft core (1) at the outer side of the compression ring (7) and is pressed and fixed through the protective cover (10); the other end of the shaft core (1) is connected with a synchronous pulley (11), one side of the synchronous pulley (11) is fixed by a locking ring (12), and the other side of the synchronous pulley is fastened by a locking nut (B8).
2. The collet chuck precision spindle according to claim 1, characterized in that the press ring (7) is fixed on the spindle core (1) by means of a pin (6) and a first screw (B2); the front gland (8) is connected with the sleeve (2) through a second screw (B3); the adapter plate (9) is fixed on the shaft core (1) through a third screw (B4); the protective cover (10) is connected with the sleeve (2) through a fourth screw (B5); the synchronous pulley (11) is connected with the shaft core (1) through a flat key (B7), one side of the synchronous pulley is connected with the sleeve (2) through a fifth screw (B6), and the other side of the synchronous pulley is fastened by a locking nut (B8).
3. The collet chuck type precision spindle as claimed in claim 2, wherein the press ring (7) is sleeved on the shaft core (1), the shaft core (1) and the press ring (7) are provided with matched holes, and the pin (6) penetrates through the holes of the shaft core (1) and the press ring; the first screw (B2) is arranged above the pin (6); and a sealing ring is arranged on the periphery of the compression ring (7).
4. The collet chuck type precision spindle as claimed in claim 2, characterized in that the bearing (B1) is an angular contact bearing, the inner ring of which is sleeved on the spindle core (1) and the outer ring of which is embedded in a matching groove arranged on the sleeve (2); the first screw (B2) is a hexagon socket flat end set screw; the second screw (B3), the third screw (B4), the fourth screw (B5) and the fifth screw (B6) are all socket head cap screws; the flat key (B7) is a common flat key.
5. The collet chuck precision spindle according to claim 1, characterized in that the diameter of the spindle core (1) decreases stepwise in the direction from the front seal ring (3) to the lock nut (B8).
6. The collet chuck type precision spindle as claimed in claim 1, wherein the front seal ring (3) and the rear seal ring (5) are both composed of an inner seal ring and an outer seal ring, and the outer seal ring is sleeved outside the inner seal ring.
7. The collet-type precision spindle of claim 1, wherein the spindle is made of hard steel.
8. The collet chuck type precision spindle as claimed in claim 1, characterized in that a collet chuck is arranged in the spindle core (1) of the spindle and is connected with a three-jaw seat of a numerical control lathe through the collet chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021267619.6U CN212976739U (en) | 2020-07-01 | 2020-07-01 | Collet type precision spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021267619.6U CN212976739U (en) | 2020-07-01 | 2020-07-01 | Collet type precision spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212976739U true CN212976739U (en) | 2021-04-16 |
Family
ID=75425262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021267619.6U Active CN212976739U (en) | 2020-07-01 | 2020-07-01 | Collet type precision spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212976739U (en) |
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2020
- 2020-07-01 CN CN202021267619.6U patent/CN212976739U/en active Active
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