CN218904817U - Main shaft swinging head of vertical grinding machine - Google Patents
Main shaft swinging head of vertical grinding machine Download PDFInfo
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- CN218904817U CN218904817U CN202320435035.2U CN202320435035U CN218904817U CN 218904817 U CN218904817 U CN 218904817U CN 202320435035 U CN202320435035 U CN 202320435035U CN 218904817 U CN218904817 U CN 218904817U
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Abstract
The utility model belongs to the technical field of numerically controlled grinding machines, and particularly relates to a spindle swing head of a vertical grinding machine. The main shaft swinging head of the vertical grinding machine comprises a swinging head assembly and a disc brake assembly, wherein the swinging head assembly comprises a main shaft, a main shaft seat, a main shaft motor and a main shaft box, and the main shaft box comprises a through hole, a turntable bearing, a speed reducer and a motor; the disc brake assembly is arranged on the outer side of the spindle box and connected with the spindle seat, and comprises a spindle seat connecting disc, a disc brake disc and a disc brake device, wherein the disc brake disc corresponds to the disc brake device in position. In the machining process, the angle of the spindle in the XZ rotation direction is required to be fixed, part of impact force during machining of the cutter is borne by the spindle, namely by a spindle motor corresponding to the spindle, but load borne by the spindle motor is limited, and the disc brake device clamps the disc brake disc, so that the angle of the spindle in the XZ rotation direction is kept unchanged, and the machining precision and the smoothness of a workpiece are ensured.
Description
Technical Field
The utility model belongs to the technical field of numerically controlled grinding machines, and particularly relates to a spindle swing head of a vertical grinding machine.
Background
With the gradual maturity of domestic numerical control technology, in recent years, numerical control machining centers are increasingly widely applied in various fields. The grinding machine is a machine tool for machining the surface of a workpiece by utilizing the grinding tool, the traditional triaxial grinding machine comprises movement dimensions of X, Y, Z in three directions, and for some workpieces with complex structures, the machining can be completed by clamping the workpiece for multiple times, the precision is inevitably reduced by clamping the workpiece for multiple times, and the high-precision machining requirement is difficult to meet.
In order to solve the above problems, four-axis grinding machines are available on the market, wherein the spindle of the four-axis grinding machine has a motion dimension rotating along the XZ plane, the existing grinding machine realizes more angle processing by increasing the spindle swinging head, the spindle is required to keep the angle of the spindle in the XZ rotation direction fixed in the processing process, part of impact force is born by the spindle swinging head during the cutter processing, namely, the spindle swinging head corresponds to a servo motor, but the load born by the servo motor is limited, when the high-load processing action is performed, the situation that the spindle rotates and swings in the XZ plane direction possibly occurs, the processing precision is reduced, and therefore, how to design a swinging head structure for ensuring that the spindle does not rotate in the XZ direction in the processing process becomes a problem to be solved.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a spindle swing head of a vertical grinding machine, which improves the positioning precision of the spindle swing head.
The utility model adopts the following technical scheme:
a main shaft swinging head of a vertical grinding machine comprises a swinging head assembly and a disc brake assembly;
the swinging head assembly comprises a main shaft, a main shaft seat, a main shaft motor and a main shaft box, wherein the main shaft seat is of a hollow structure, the main shaft is vertically penetrated in the main shaft seat, one end of the main shaft is connected with an output shaft of the main shaft motor, the main shaft box comprises a through hole, a rotary table bearing, a speed reducer and a swinging head motor, the through hole is formed in the lower part of the main shaft box, the rotary table bearing is horizontally penetrated in the through hole, the speed reducer is arranged at the rear end of the rotary table bearing, and the swinging head motor is arranged at the top of the main shaft box;
the disc brake assembly is arranged on the outer side of the spindle box and connected with the spindle seat, and comprises a spindle seat connecting disc, a disc brake disc and a disc brake device, wherein the spindle seat connecting disc is fixedly arranged on the spindle seat, the disc brake disc is arranged on the outer side of the spindle seat connecting disc, the disc brake device is arranged on the spindle box, and the disc brake disc corresponds to the disc brake device in position.
Further, the disc brake is a hydraulic brake.
Further, the disc brake is provided with a plurality of disc brakes, and the disc brakes are evenly distributed on the upper half part of the through hole along the outer diameter of the through hole to form a fan shape.
Further, the rotary table bearing is a YRT rotary table bearing, the YRT rotary table bearing comprises a bearing outer ring and a bearing inner ring, the bearing outer ring is fixedly arranged on one side of the spindle box and is coaxially arranged with the through hole, and the bearing inner ring is horizontally arranged in the through hole and is fixedly connected with the spindle seat through a spindle seat connecting disc.
Further, the swing motor driving device also comprises a transmission mechanism, wherein the transmission mechanism is arranged between the speed reducer and the swing motor.
Further, the transmission mechanism is a synchronous pulley transmission.
Further, the speed reducer is an RV speed reducer, and the swing motor is a servo motor.
Furthermore, the main shaft is a mechanical direct-connection main shaft, and one end of the main shaft is provided with a BBT50 double-sided constraint taper shank structure.
As can be seen from the above description of the present utility model, compared with the prior art, the present utility model has the following beneficial effects: through the technical scheme, when the spindle is used, the disc brake assembly arranged on the spindle box and connected with the spindle seat enables the spindle to be matched with the disc brake through the disc brake disc in the machining process, so that the spindle is effectively prevented from rotating in the XZ plane direction when carrying out high-load machining action, the positioning precision of the spindle is improved, and the machining precision of the spindle swinging head is ensured;
through the turntable bearing which is arranged on the main shaft box and connected with the main shaft seat, the rotation of the main shaft can swing at any angle within a certain angle range, meanwhile, the turntable bearing is a YRT turntable bearing, and the YRT turntable bearing has the advantage of high rotation precision, and ensures the consistency of the main shaft at all swinging angles;
the rotary control device has the advantages that the rotary control device can drive the swing motor to rotate and control the main shaft through the speed reducer arranged at the rear end of the turntable bearing, meanwhile, the speed reducer is an RV speed reducer, and the RV speed reducer has the advantages of high precision, high torque and the like, so that the positioning precision and repeated positioning precision of the rotary swing angle of the main shaft are ensured, and the work that the main shaft is required to be reconditioned due to inaccurate swing angle of the main shaft is reduced;
the synchronous pulley transmission mechanism arranged between the speed reducer and the swing motor reduces the occupation of the whole axial space of the swing assembly and optimizes the external dimension;
the main shaft is arranged in the main shaft seat, the main shaft adopts a mechanical direct-connection main shaft and is matched with a high-torque main shaft motor, so that the grinding efficiency of the main shaft swinging head is greatly improved, one end of the main shaft adopts a BBT50 double-sided constraint taper shank structure, the connection rigidity of the cutter handle is ensured, and the grinding quality is ensured;
by utilizing the technical scheme of the utility model, the problem that the main shaft does not shake in the XZ direction in the processing process is solved, the front end part of the main shaft can be controlled in rotary motion through the swinging head assembly, the disc brake assembly and the transmission mechanism, the accurate positioning of the swinging angle of the main shaft is ensured, the high rigidity requirement during the main shaft grinding is ensured, the inner and outer circle grinding and the end face grinding can be carried out, and the process requirement of compound grinding is met.
Drawings
Fig. 1 is a schematic structural view of a spindle head of a vertical grinder.
Fig. 2 is a front view of a spindle head of a vertical grinder.
Fig. 3 isbase:Sub>A schematic cross-sectional view atbase:Sub>A-base:Sub>A in fig. 2.
In the figure: 1-swinging head assembly, 11-main shaft, 12-main shaft seat, 13-main shaft motor, 14-main shaft box, 15-through hole, 16-turntable bearing, 161-bearing outer ring, 162-bearing inner ring, 17-speed reducer, 18-swinging head motor, 19-transmission mechanism, 2-disc brake assembly, 21-main shaft seat connecting disc, 22-disc brake disc and 23-disc brake.
Detailed Description
The utility model is further described below by means of specific embodiments.
As shown in fig. 1 to 3, the present embodiment provides a spindle swing head of a vertical grinding machine, which comprises a swing head assembly 1 and a disc brake assembly 2.
The swinging head assembly 1 comprises a main shaft 11, a main shaft seat 12, a main shaft motor 13 and a main shaft box 14, wherein the main shaft seat 12 is of a hollow structure, the main shaft 11 is vertically penetrated in the main shaft seat 12, one end of the main shaft 11 is connected with an output shaft of the main shaft motor 13, the main shaft box 14 comprises a through hole 15, a turntable bearing 16, a speed reducer 17 and a swinging head motor 18, the through hole 15 is arranged at the lower part of the main shaft box 14, the turntable bearing 16 is horizontally penetrated in the through hole 15, the speed reducer 17 is arranged at the rear end of the turntable bearing 16, the swinging head motor 18 is arranged at the top of the main shaft box 14, the main shaft 11 and the main shaft motor 13 are arranged on the turntable bearing 16 on the main shaft box 14 through the main shaft seat 12, the turntable bearing 16 is matched with the speed reducer 17 to control the rotation motion of the front end part of the main shaft 11, and the accurate positioning of the swinging angle of the main shaft 11 is ensured; specifically, the turntable bearing 16 comprises a bearing outer ring 161 and a bearing inner ring 162, the bearing outer ring 161 is fixedly arranged on one side of the spindle box 14 and is coaxially arranged with the through hole 15, the bearing inner ring 162 is horizontally arranged in the through hole 15 and is fixedly connected with the spindle seat 12 through the spindle seat connecting disc 21, so that the connection rigidity between the spindle seat 12 and the spindle box 14 is ensured, meanwhile, the turntable bearing 16 is a YRT turntable bearing, the advantage of high rotation precision is achieved, and the consistency of the swinging heads at all swinging angles is ensured; further, the swing head assembly further comprises a transmission mechanism 19, wherein the transmission mechanism 19 is arranged between the speed reducer 17 and the swing head motor 18, the transmission mechanism 19 is a synchronous pulley transmission, the whole axial space occupation of the swing head assembly 1 is reduced due to the synchronous pulley transmission, and the external dimension is optimized; further, the swinging motor 18 is a servo motor, the speed reducer 17 is an RV speed reducer, the advantages of high precision, high torque and the like are achieved, the positioning precision of the rotation swinging angle of the main shaft 11 is effectively improved, the main shaft 11 is a mechanical direct-connection main shaft, a BBT50 double-sided constraint taper shank structure is arranged at one end of the main shaft 11, and the connecting rigidity of the main shaft is greatly guaranteed due to the double-sided constraint cutter shank connecting mode.
The disc brake assembly 2 is arranged on the outer side of the spindle box 14 and is connected with the spindle seat 12, and comprises a spindle seat connecting disc 21, a disc brake disc 22 and a disc brake 23, wherein the spindle seat connecting disc 21 is fixedly arranged on the spindle seat 12, the disc brake disc 22 is arranged on the outer side of the spindle seat connecting disc 21, the disc brake 23 is arranged on the spindle box 14, the disc brake disc 22 corresponds to the disc brake 23 in position, and the disc brake disc 22 and the disc brake 23 are matched, so that the spindle 11 can be prevented from rotating and shaking in the XZ plane direction when the spindle 11 performs high-load machining action; specifically, the disc brake 23 is a hydraulic brake, the disc brake 23 is provided with a plurality of disc brakes, the disc brakes are evenly distributed on the upper half part of the through hole 15 along the outer diameter of the through hole 15 to form a fan shape, in the machining process, the angle of the spindle 11 in the XZ rotation direction needs to be kept unchanged, part of impact force during the tool machining is borne by the spindle 11, namely by the spindle motor 13 corresponding to the spindle 11, but the load borne by the spindle motor 13 is limited, and the disc brake 23 clamps the disc brake disc 22, so that the angle of the spindle in the XZ rotation direction is kept unchanged, and the machining precision and the finish of a workpiece are ensured.
The principles of the present application are further described in the following detailed working procedure:
in the machining process, a workpiece is fixed on a workpiece table, before the spindle 11 is subjected to grinding, a head swinging motor 18 drives the spindle 11 to rotate along an XZ plane to a required machining angle through a spindle box 13, a disc brake disc 22 is clamped by a disc brake device 23, so that the direction angle of the spindle 11 on the XZ plane is kept unchanged, and then one surface of the workpiece is machined by the spindle 11; when the other surface of the workpiece needs to be machined, the disc brake 23 releases the disc brake disc 22, at the moment, the spindle 11 resumes the degree of freedom of rotation on the XZ plane, the swinging motor 18 drives the spindle 11 to rotate to another machining angle along the XZ plane through the spindle box 13, then the disc brake 23 clamps the disc brake disc 22, the angle of the spindle 11 in the direction on the XZ plane is kept unchanged, and then the spindle 11 machines the other surface of the workpiece; the disc brake assembly 2 ensures the positioning of the main shaft 11 on the XZ plane during processing, thereby improving the processing precision of the main shaft 11 and ensuring the grinding rigidity of the main shaft 11.
In summary, by means of the technical scheme of the utility model, the swinging head assembly 1 and the disc brake assembly 2 can effectively prevent the main shaft 11 from swinging in the XZ plane direction when performing high-load processing actions, and the positioning precision of the main shaft 11 is improved, so that the processing precision of the swinging head of the main shaft is ensured; in addition, the rotation of the spindle 11 can swing at any angle within a certain angle range through a turntable bearing 16 provided on the spindle box 14 and connected to the spindle base 12; in addition, through the speed reducer 17 arranged at the rear end of the turntable bearing 16, the positioning precision and repeated positioning precision of the rotation swing angle of the main shaft 11 are ensured, and the problem that the main shaft 11 needs to be reconditioned due to inaccurate swing angle is solved; in addition, through the transmission mechanism 19 arranged between the speed reducer 17 and the swing motor 18, the occupation of the whole axial space of the swing assembly 1 is reduced, and the external dimension is optimized; in addition, through the main shaft 11 arranged in the main shaft seat 12, the main shaft 11 adopts a mechanical direct connection main shaft, so that the grinding efficiency of the main shaft swinging head is greatly improved, one end of the main shaft 11 adopts a BBT50 double-sided constraint taper shank structure, the connection rigidity of a cutter handle is ensured, and the grinding quality is ensured.
The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, i.e., the utility model is not to be limited to the details of the claims and the description, but rather is to cover all modifications which are within the scope of the utility model.
Claims (8)
1. The utility model provides a vertical grinding machine main shaft pendulum which characterized in that: comprises a swinging head assembly and a disc brake assembly;
the swinging head assembly comprises a main shaft, a main shaft seat, a main shaft motor and a main shaft box, wherein the main shaft seat is of a hollow structure, the main shaft is vertically penetrated in the main shaft seat, one end of the main shaft is connected with an output shaft of the main shaft motor, the main shaft box comprises a through hole, a rotary table bearing, a speed reducer and a swinging head motor, the through hole is formed in the lower part of the main shaft box, the rotary table bearing is horizontally penetrated in the through hole, the speed reducer is arranged at the rear end of the rotary table bearing, and the swinging head motor is arranged at the top of the main shaft box;
the disc brake assembly is arranged on the outer side of the spindle box and connected with the spindle seat, and comprises a spindle seat connecting disc, a disc brake disc and a disc brake device, wherein the spindle seat connecting disc is fixedly arranged on the spindle seat, the disc brake disc is arranged on the outer side of the spindle seat connecting disc, the disc brake device is arranged on the spindle box, and the disc brake disc corresponds to the disc brake device in position.
2. The spindle head of a vertical grinding machine according to claim 1, wherein: the disc brake is a hydraulic brake.
3. The spindle head of a vertical grinding machine according to claim 1, wherein: the disc brake is provided with a plurality of disc brakes, and the disc brakes are evenly distributed on the upper half part of the through hole along the outer diameter of the through hole to form a fan shape.
4. The spindle head of a vertical grinding machine according to claim 1, wherein: the rotary table bearing is a YRT rotary table bearing, the YRT rotary table bearing comprises a bearing outer ring and a bearing inner ring, the bearing outer ring is fixedly arranged on one side of the spindle box and is coaxially arranged with the through hole, and the bearing inner ring is horizontally arranged in the through hole and is fixedly connected with the spindle seat through a spindle seat connecting disc.
5. The spindle head of a vertical grinding machine according to claim 1, wherein: the device also comprises a transmission mechanism, wherein the transmission mechanism is arranged between the speed reducer and the swing motor.
6. The spindle head of a vertical grinding machine of claim 5, wherein: the transmission mechanism is a synchronous pulley transmission.
7. The spindle head of a vertical grinding machine according to claim 1, wherein: the speed reducer is an RV speed reducer, and the swing motor is a servo motor.
8. The spindle head of a vertical grinding machine according to claim 1, wherein: the main shaft is a mechanical direct-connection main shaft, and one end of the main shaft is provided with a BBT50 double-sided constraint taper shank structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320435035.2U CN218904817U (en) | 2023-03-09 | 2023-03-09 | Main shaft swinging head of vertical grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320435035.2U CN218904817U (en) | 2023-03-09 | 2023-03-09 | Main shaft swinging head of vertical grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218904817U true CN218904817U (en) | 2023-04-25 |
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ID=86009188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320435035.2U Active CN218904817U (en) | 2023-03-09 | 2023-03-09 | Main shaft swinging head of vertical grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218904817U (en) |
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2023
- 2023-03-09 CN CN202320435035.2U patent/CN218904817U/en active Active
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