CN114770375B - Large-torque belt main shaft for numerically-controlled grinder - Google Patents
Large-torque belt main shaft for numerically-controlled grinder Download PDFInfo
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- CN114770375B CN114770375B CN202210678251.XA CN202210678251A CN114770375B CN 114770375 B CN114770375 B CN 114770375B CN 202210678251 A CN202210678251 A CN 202210678251A CN 114770375 B CN114770375 B CN 114770375B
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- ring seat
- spindle
- main shaft
- outer side
- sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a large-torque belt spindle for a numerical control grinding machine, which comprises: the electric spindle box comprises an electric spindle box, a movement spindle, a control main cylinder, a built-in motor assembly and a shaft stabilizing assembly, wherein a supporting seat is arranged on the bottom surface of the electric spindle box, an air cooling cavity is arranged on the inner side of the electric spindle box, the control main cylinder is fixedly arranged on one side of the electric spindle box, the output end of the control main cylinder is movably connected with one end of the movement spindle, the movement spindle is rotatably sleeved on the inner side of the electric spindle box, and a clutch coupling is arranged at one end of the movement spindle. In the invention, a built-in driving structure is adopted, a rotor and stator structure is formed by utilizing alternating current given by the surfaces of the permanent magnet ring seat, the permanent magnet blocks and the magnetic yoke stator sleeved outside the moving main shaft and the magnetic yoke stator, the change of the coil current on the surface of the magnetic yoke stator is utilized when the steel main shaft with large specific gravity is rapidly accelerated and decelerated so as to directly act on the main shaft to limit or increase the movement deviation force of the main shaft, and extra kinetic energy supplement and kinetic energy collapse limitation are carried out on the acceleration and deceleration stage so as to ensure the stable kinetic energy output of the main shaft in the processing.
Description
Technical Field
The invention relates to the technical field of machine tools, in particular to a large-torque belt spindle for a numerical control grinding machine.
Background
In order to increase the cutting speed of a machine tool such as a machining center, it is desirable that a spindle, which fixes a tool and transmits a rotational force to the tool, rotate at a high speed. In order to achieve high speed rotation of the main shaft, consideration must be given to, for example, lubrication and cooling of bearings, and dynamic balance of rotating parts including the main shaft; and it is also important to improve the static rigidity and dynamic rigidity of the main shaft, and to reduce the thermal deformation and inertial force thereof.
In the prior art, when the main shaft is used for tool changing, due to the fact that no tool changing signal sensing device is arranged, when the tool is pulled and removed, the displacement of the pull rod is not easy to control, the result that the displacement is too large or too small can be caused no matter the tool is changed by hands or the tool is automatically changed, the pull rod with too large displacement is easy to damage, and the tool cannot be changed due to too small displacement. The air cylinder in the air pressure cutter unloading mechanism has a complex structure, low sealing performance, unstable transmission, easy damage or air leakage when frequently changing the cutter, short service life and frequent replacement of the liquid air cylinder. The tool changing device is complex in structure, the tool changing process is complicated, however, the tension force is insufficient, all parts or most parts of the main shaft are usually made of carbon steel and alloy steel, the steel main shaft with high specific gravity is limited by larger inertia force during rapid acceleration and rapid deceleration, and therefore, the weight of the main shaft is expected to be reduced under the condition of not sacrificing the strength in order to reduce the inertia force, so that the torque of the main shaft is reduced.
In the precision machining and ultra-precision machining of various high-grade numerical control machine tools, the influence of thermal errors is very large, and the thermal errors can account for 70% of the total errors of the machine tools at most. How to effectively improve the thermal characteristics so as to effectively reduce the adverse effect generated by the thermal error of the machine tool is a technical bottleneck which needs to be solved urgently in equipment research and development in the manufacturing industry of China. The influence that the thermal error produced is eliminated to traditional high-grade accurate digit control machine tool, and one is adopting the error compensation model to embed into numerical control system, and the detection value that passive receipt sensor sent carries out error compensation, but because the nonlinear time varying's of heat altered process, real-time heat altered is hardly tracked to general model accurate, and its two is the thermostated chamber of establishing, places the digit control machine tool in the thermostated chamber and carries out initiative regulation with large-scale air conditioner to the temperature, but the earlier stage input and later stage operation maintenance cost are high.
In view of the above, the present invention provides a large-torque belt spindle for a numerically controlled grinding machine, which is improved by studying the existing problems, so as to solve the problems of torque weakening caused by the reduction of the inertial mass of the spindle of the machine tool and the influence of high-temperature thermal expansion.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the technical scheme adopted by the invention is as follows: a high-torque belt spindle for a numerically controlled grinder, comprising: the electric spindle box comprises an electric spindle box, a moving spindle, a control main cylinder, a built-in motor assembly and a shaft stabilizing assembly, wherein a supporting seat is arranged on the bottom surface of the electric spindle box, an air cooling cavity is arranged on the inner side of the electric spindle box, the control main cylinder is fixedly arranged on one side of the electric spindle box, the output end of the control main cylinder is movably connected with one end of the moving spindle, the moving spindle is rotatably sleeved on the inner side of the electric spindle box, a clutch coupling is arranged at one end of the moving spindle, a spindle driving sleeve is meshed and sleeved on the outer side of the moving spindle, a belt driving wheel fixedly connected with the other end of the clutch coupling is rotatably arranged at one end of the electric spindle box, and the built-in motor assembly and the shaft stabilizing assembly are fixedly arranged on the inner side of the electric spindle box; the shaft stabilizing assembly comprises a first stabilizing ring seat, a second stabilizing ring seat and a counterweight ring sleeve, the counterweight ring sleeve is rotatably sleeved on the outer side of the main shaft driving sleeve, a liquid flow gap is formed in the periphery of the counterweight ring sleeve and the inner side of the second stabilizing ring seat, a gap is formed between the outer side of the liquid flow gap and the inner side of the second stabilizing ring seat, a bearing ring is fixedly sleeved on the outer side of the counterweight ring sleeve, the second stabilizing ring seat is fixedly sleeved on the outer side of the bearing ring, the first stabilizing ring seat is fixedly sleeved on the outer side of the second stabilizing ring seat, a circulation groove is formed in the inner side of the first stabilizing ring seat, and one side of the circulation groove is communicated with the gap in the inner side of the second stabilizing ring seat; the built-in motor component comprises a magnet yoke stator, a permanent magnet ring seat and permanent magnets, wherein the permanent magnet ring seat is fixedly sleeved on the outer side of the main shaft driving sleeve, the permanent magnets are fixedly sleeved on the outer side of the permanent magnet ring seat, the outer side of the magnet yoke stator is provided with an electromagnetic coil, the outer side of the magnet yoke stator is abutted to the inner side of the electric spindle box, and the permanent magnets are of permanent magnet structures and are rotatably sleeved on the inner side of the magnet yoke stator.
The present invention in a preferred example may be further configured to: the clutch coupling is characterized in that a spline bead is arranged on the outer side of the clutch coupling, an engagement groove matched with the spline bead is formed in the inner side of the spindle driving sleeve, the arrangement direction of the spline bead is the same as the output direction of the control main cylinder, the control main cylinder is a pneumatic cylinder, and a bearing sleeve fixedly connected with one end of the moving spindle is arranged at the output end of the control main cylinder.
By adopting the technical scheme, the spline on the outer side of the moving main shaft is meshed with the main shaft driving sleeve for transmission in a sleeved mode, the moving main shaft synchronously rotates in the rotation of the main shaft driving sleeve, and the moving main shaft retreats in the main shaft driving sleeve by controlling the driving of the main cylinder in the clutch stopping process so as to disconnect the transmission with the belt transmission wheel and stop the transmission, so that the reverse driving of the machining end head of the outer side machine tool on the moving main shaft is avoided, and the quick stopping is convenient to realize.
The present invention in a preferred example may be further configured to: the spindle driving sleeve is a component made of refined steel, the permanent magnet ring seat and the permanent magnet blocks are fixed on the outer side of the spindle driving sleeve, the spindle driving sleeve is in a circular tube shape, the circle center of the spindle driving sleeve is concentric with the circle center of the moving spindle, the outer side of the spindle driving sleeve is in sliding butt joint with the inner side of the electric spindle box, and a plurality of ball bearings fixed on the inner side of the electric spindle box are fixedly sleeved on the outer side of the spindle driving sleeve.
Through adopting above-mentioned technical scheme, utilize big quality main shaft drive sleeve pipe to carry out cup jointing of motion main shaft and improve rotatory main shaft quality to improve its inertia, support through the multi bearings in the inside of electric main shaft box and rotate and output and go out big moment of torsion kinetic energy and under the drive of built-in motor, guarantee the stable output of big moment of torsion kinetic energy.
The present invention in a preferred example may be further configured to: the surface of electricity headstock is equipped with liquid cooling feed liquor mouth of pipe and goes out the mouth of pipe, the feed liquor mouth of pipe and the mouth of pipe are located the both ends of electricity headstock respectively and the intercommunication has the liquid cooling runner that is located the inside of electricity headstock, and the liquid cooling runner link up to the both ends of permanent magnetism ring seat through the outside of main shaft drive sleeve pipe, and the liquid cooling runner is linked together with the inboard clearance of the stable ring seat of second, the feed liquor mouth of pipe and the tip intercommunication of the mouth of pipe have the circulating pump.
Through adopting above-mentioned technical scheme, utilize circulation liquid cooling system to cool off fluid and get the pump sending, carry out the heat through the inside oil duct of electric spindle box at fluid and get the derivation and avoid the friction between the movement main shaft thermal energy leads to the fit clearance, and the circulation input of fluid derives the main shaft in motion wearing and tearing iron fillings and avoid the main shaft sweeps card dead, lubricates the main shaft.
The present invention in a preferred example may be further configured to: the outer side of the magnetic yoke stator is provided with a plurality of fin grooves, the outer side of the magnetic yoke stator is sleeved with a plurality of strands of electromagnetic coils, the electrode ends of the electromagnetic coils are electrically connected with a current generator, and the magnetic yoke stator and the permanent magnet ring seat are of a magnetic yoke structure.
By adopting the technical scheme, the current generator is used for introducing current into the electromagnetic coil on the surface of the magnetic yoke stator, the constantly-changing current is used for interacting with the permanent magnet to form a motor structure, the motor structure is arranged in the main shaft to reduce the structure volume, and the transmission efficiency is improved.
The present invention in a preferred example may be further configured to: the circle centers of the main shaft driving sleeve, the permanent magnet ring seat and the first stabilizing ring seat are located on the same straight line, liquid flow ring grooves located on the inner sides of the permanent magnets are formed in the two ends of the permanent magnet ring seat, and the liquid flow ring grooves are communicated with the inner cavity of the second stabilizing ring seat along the surface of the main shaft driving sleeve.
Through adopting above-mentioned technical scheme, utilize the fit clearance that is located main shaft drive sleeve pipe surface and each device inboard to carry out the oil circuit transmission, be convenient for take away main shaft drive sleeve pipe's motion heat more quickly and reduce the expansion rate, and the oil circuit structure of mutual UNICOM better carries out heat exchange, whole cooling.
The present invention in a preferred example may be further configured to: the second stabilizer ring seat is fixedly connected to the outer side of the counterweight ring sleeve through a bearing ring in a fixed sleeved mode, a supporting ring seat is arranged on the surface of the counterweight ring sleeve, one end of the supporting ring seat penetrates through the inner side of the second stabilizer ring seat, and the periphery of the supporting ring seat is in sliding butt joint with the inner side of the first stabilizer ring seat.
Furthermore, the balance weight ring sleeve and the support ring seat are made of alloy steel or tungsten steel, the periphery of the support ring seat is subjected to surface hardening treatment, and flow channel gaps are formed between the two sides of the support ring seat and the inner side of the second stabilizing ring seat.
Through adopting above-mentioned technical scheme, utilize each runner with the inside increase that eliminates main shaft motion friction and reduce the internal energy of leading-in electric headstock of liquid stream and axle stabilizing component, and carry out quick heat transfer through the circulation runner and reduce the structure thermal expansion rate, avoid the butt wearing and tearing of fit clearance department, and high-quality counter weight ring cover further increases the main shaft counter weight with the support ring seat and improves moment of torsion output to move the support through axle stabilizing component and offset adverse effect such as the play of counter weight ring cover and support ring seat.
The beneficial effects obtained by the invention are as follows:
1. according to the invention, a built-in driving structure is adopted, a rotor and stator structure is formed by utilizing alternating current given by the surfaces of a permanent magnet ring seat sleeved outside a moving main shaft, a permanent magnet block and a magnetic yoke stator, the specific gravity of the main shaft structure integrated with the rotor structure is increased, the movement torque of the main shaft structure is effectively increased, the steel main shaft with large specific gravity directly acts on the main shaft to limit or increase the movement deviation force of the main shaft by utilizing the change of the coil current on the surface of the magnetic yoke stator during rapid acceleration and rapid deceleration, and additional kinetic energy supplement and kinetic energy collapse limitation are carried out on the acceleration and deceleration stage, so that the stable kinetic energy output of the main shaft in the processing process is ensured.
2. According to the invention, by adopting a built-in integrated driving spindle structure, the multi-runner structure is arranged in the electric spindle box, liquid flow is guided into the electric spindle box and the shaft stabilizing assembly by utilizing each runner, so that the increase of the internal energy reduced by the motion friction of the spindle is eliminated, the thermal expansion rate of the structure is reduced by carrying out rapid heat exchange through the circulating runner, the abutting abrasion at the fit clearance is avoided, and the service life of the electric spindle is further prolonged.
3. According to the invention, the air drive connecting shaft assembly is arranged, the moving main shaft is connected and driven to output through the clutch coupling by utilizing static pushing of the control main cylinder, the main shaft can be quickly clutched by backspacing of the moving main shaft in the shutdown operation, the structure is simple, and the main shaft protection is carried out in the shutdown operation.
Drawings
FIG. 1 is a schematic overall structure diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of an electric spindle box according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional structure of one embodiment of the present invention;
FIG. 4 is a schematic diagram of a built-in motor assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of an axle stabilizing assembly mounting arrangement according to one embodiment of the present invention.
Reference numerals:
100. an electric main shaft box; 110. a supporting seat; 101. an air-cooled cavity;
200. a motion main shaft; 210. a belt transmission wheel; 220. a clutch coupling; 230. a spindle drive sleeve; 300. a control master cylinder;
400. a built-in motor assembly; 410. a yoke stator; 420. a permanent magnet ring seat; 430. permanent magnet blocks;
500. a shaft stabilizing assembly; 510. a first stabilizer ring seat; 520. a second stabilizer ring seat; 530. a balance weight ring sleeve; 511. a circulation tank; 521. a liquid flow gap; 522. a bearing ring; 531. and a support ring seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
It is to be understood that this description is made only by way of example and not as a limitation on the scope of the invention.
The invention provides a large-torque belt spindle for a numerically controlled grinder, which is provided by some embodiments of the invention and is described in the following with reference to the accompanying drawings.
Referring to fig. 1 to 5, the present invention provides a large torque belt spindle for a numerically controlled grinder, including: the electric spindle box 100, the moving spindle 200, the control main cylinder 300, the built-in motor assembly 400 and the shaft stabilizing assembly 500 are arranged on the bottom surface of the electric spindle box 100, the inner side of the electric spindle box 100 is provided with an air cooling cavity 101, the control main cylinder 300 is fixedly arranged on one side of the electric spindle box 100, the output end of the control main cylinder is movably connected with one end of the moving spindle 200, the moving spindle 200 is rotatably sleeved on the inner side of the electric spindle box 100, one end of the moving spindle 200 is provided with a clutch coupling 220, the outer side of the moving spindle 200 is engaged and sleeved with a spindle driving sleeve 230, one end of the electric spindle box 100 is rotatably provided with a belt transmission wheel 210 fixedly connected with the other end of the clutch coupling 220, and the built-in motor assembly 400 and the shaft stabilizing assembly 500 are fixedly arranged on the inner side of the electric spindle box 100; the shaft stabilizing assembly 500 comprises a first stabilizing ring seat 510, a second stabilizing ring seat 520 and a counterweight ring sleeve 530, wherein the counterweight ring sleeve 530 is rotatably sleeved on the outer side of the main shaft driving sleeve 230, a gap 521 is formed between the periphery of the counterweight ring sleeve 530 and the inner side of the second stabilizing ring seat 520, a gap is formed between the outer side of the liquid flow gap 521 and the inner side of the second stabilizing ring seat 520, a bearing ring 522 is fixedly sleeved on the outer side of the counterweight ring sleeve 530, the second stabilizing ring seat 520 is fixedly sleeved on the outer side of the bearing ring 522, the first stabilizing ring seat 510 is fixedly sleeved on the outer side of the second stabilizing ring seat 520, a circulation groove 511 is formed in the inner side of the first stabilizing ring seat 510, and one side of the circulation groove 511 is communicated with the gap of the inner side of the second stabilizing ring seat 520;
the built-in motor assembly 400 comprises a magnetic yoke stator 410, a permanent magnet ring seat 420 and permanent magnets 430, wherein the permanent magnet ring seat 420 is fixedly sleeved on the outer side of the spindle driving sleeve 230, the permanent magnets 430 are fixedly sleeved on the outer side of the permanent magnet ring seat 420, electromagnetic coils are arranged on the outer side of the magnetic yoke stator 410, the outer side of the magnetic yoke stator 410 is abutted to the inner side of the electric spindle box 100, and the permanent magnets 430 are of permanent magnet structures and are rotatably sleeved on the inner side of the magnetic yoke stator 410.
Specifically, the yoke stator 410 and the permanent magnet 430 interact with each other to form a motor structure, the specific gravity of the spindle structure integrated with the rotor structure is increased to effectively increase the movement torque of the spindle structure, the steel spindle with high specific gravity utilizes the change of the surface control current of the yoke stator 410 to directly act on the spindle to limit or increase the movement deviation force of the spindle during rapid acceleration and rapid deceleration, additional kinetic energy supplement and kinetic energy collapse limitation are carried out at the acceleration and deceleration stage to ensure the stable kinetic energy output of the spindle in processing, the motor structure is arranged in the spindle to reduce the structure volume, and the transmission efficiency is improved.
In this embodiment, a spline rib is disposed on an outer side of the clutch coupling 220, an engagement groove adapted to the spline rib is disposed on an inner side of the spindle driving sleeve 230, an arrangement direction of the spline rib is the same as an output direction of the control main cylinder 300, the control main cylinder 300 is a pneumatic cylinder, and an output end of the control main cylinder 300 is provided with a bearing housing fixedly connected to one end of the moving main shaft 200.
Specifically, the spline on the outer side of the moving spindle 200 is engaged with the spindle driving sleeve 230 for transmission, the moving spindle 200 synchronously rotates during the rotation of the spindle driving sleeve 230, and the moving spindle 200 retreats in the spindle driving sleeve 230 by controlling the driving of the main cylinder 300 in the clutch stopping process so as to disconnect the transmission with the belt transmission wheel 210 and stop the transmission, so that the reverse driving of the machining end of the outer side machine tool on the moving spindle 200 is avoided, and the rapid stopping is convenient to realize.
In this embodiment, the spindle driving sleeve 230 is a fine steel member, the permanent magnet ring seat 420 and the permanent magnet 430 are fixed to the outer side of the spindle driving sleeve 230, the spindle driving sleeve 230 is in a circular tube shape, the center of the circle is concentric with the center of the moving spindle 200, the outer side of the spindle driving sleeve 230 is in sliding contact with the inner side of the electric spindle head 100, and a plurality of ball bearings fixed to the inner side of the electric spindle head 100 are fixedly sleeved on the outer side of the spindle driving sleeve 230.
Specifically, the mass of the rotating spindle is increased by sleeving the large-mass spindle driving sleeve 230 on the moving spindle 200, so that the rotational inertia of the rotating spindle is increased, the spindle box 100 is supported by a multi-bearing to rotate to output larger torque kinetic energy, and the stable output of the large torque kinetic energy is ensured under the driving of the built-in motor.
In this embodiment, the surface of the electric spindle box 100 is provided with a liquid cooling liquid inlet pipe orifice and a liquid outlet pipe orifice, the liquid inlet pipe orifice and the liquid outlet pipe orifice are respectively located at two ends of the electric spindle box 100 and are communicated with liquid cooling flow channels located inside the electric spindle box 100, the liquid cooling flow channels are communicated with two ends of the permanent magnet ring seat 420 through the outer side of the spindle driving sleeve 230, the liquid cooling flow channels are communicated with the inner side gap of the second stabilizing ring seat 520, and the end portions of the liquid inlet pipe orifice and the liquid outlet pipe orifice are communicated with a circulating pump.
Specifically, set up the multithread way structure in electric headstock 100 inside, utilize each runner with the inside increase that eliminates main shaft motion friction and reduce internal energy of liquid stream leading-in electric headstock 100 and axle stabilizing assembly 500, and carry out quick heat transfer through circulation runner and reduce the structure thermal expansion rate, utilize circulation liquid cooling system to cool off fluid and get the pump sending, carry out the heat through electric headstock 100 inside oil duct at fluid and get to derive and avoid the motion main shaft thermal expansion to lead to the friction between the fit clearance, and the circulation of fluid input derives the main shaft motion in the iron fillings of wearing and tearing avoid the main shaft sweeps card to die, lubricate the main shaft.
In this embodiment, the centers of the spindle driving sleeve 230, the permanent magnet ring seat 420 and the first stabilizer ring seat 510 are located on the same straight line, and liquid flow ring grooves located inside the permanent magnet blocks 430 are formed at both ends of the permanent magnet ring seat 420, and are communicated with the inner cavity of the second stabilizer ring seat 520 along the surface of the spindle driving sleeve 230.
Specifically, the fit clearance between the outer surface of the main shaft driving sleeve 230 and the inner side of each device is utilized for oil path transmission, so that the movement heat of the main shaft driving sleeve 230 can be taken away more quickly, the expansion rate is reduced, heat exchange is better carried out on the communicated oil path structures, and the whole temperature is reduced.
In this embodiment, the second stabilizer ring seat 520 is fixedly sleeved outside the counterweight ring sleeve 530 through the bearing ring 522, the surface of the counterweight ring sleeve 530 is provided with a support ring seat 531, one end of the support ring seat 531 penetrates through the inside of the second stabilizer ring seat 520, and the outer periphery of the support ring seat 531 is in sliding contact with the inside of the first stabilizer ring seat 510.
Further, the weight ring sleeve 530 and the support ring seat 531 are made of alloy steel or tungsten steel, the outer periphery of the support ring seat 531 is subjected to surface hardening treatment, and flow channel gaps are formed between two sides of the support ring seat 531 and the inner side of the second stabilizer ring seat 520.
Specifically, each flow channel is used for guiding liquid flow into the electric spindle box 100 and the shaft stabilizing assembly 500 to eliminate increase of the motion friction of the spindle and reduce internal energy, rapid heat exchange is carried out through the circulating flow channel to reduce the thermal expansion rate of the structure, abutting abrasion at the fit clearance is avoided, spindle counterweight is further added to the high-quality counterweight ring sleeve 530 and the support ring seat 531 to improve torque output, and the shaft stabilizing assembly 500 is used for carrying out motion support on the motion spindle 200 to offset adverse effects such as play of the counterweight ring sleeve 530 and the support ring seat 531.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "mounted," "connected," "fixed," and the like are used broadly and encompass, for example, a fixed connection, a removable connection, or an integral connection, and a connection may be a direct connection or an indirect connection via intermediate media. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
It will be understood that when an element is referred to as being "mounted to," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (8)
1. The utility model provides a numerically control grinder is with big moment of torsion belt main shaft which characterized in that includes: an electric spindle box (100), a motion spindle (200), a control main cylinder (300), a built-in motor component (400) and a shaft stabilizing component (500), the bottom surface of the electric spindle box (100) is provided with a supporting seat (110), the inner side of the electric spindle box (100) is provided with an air cooling cavity (101), the control main cylinder (300) is fixedly arranged at one side of the electric main shaft box (100), the output end of the control main cylinder is movably connected with one end of the movement main shaft (200), the motion main shaft (200) is rotatably sleeved on the inner side of the electric main shaft box (100) and one end of the motion main shaft is provided with a clutch coupling (220), one end of the electric spindle box (100) is rotatably provided with a belt transmission wheel (210) which is fixedly connected with the other end of the clutch coupling (220), a main shaft driving sleeve (230) is engaged and sleeved at the outer side of the motion main shaft (200), the built-in motor assembly (400) and the shaft stabilizing assembly (500) are fixedly arranged on the inner side of the electric spindle box (100);
the shaft stabilization assembly (500) comprises a first stabilization ring seat (510), a second stabilization ring seat (520) and a weighted ring sleeve (530), the counterweight ring sleeve (530) is rotatably sleeved outside the main shaft driving sleeve (230), a liquid flow gap (521) is arranged on the periphery of the counterweight ring sleeve (530) and the inner side of the second stabilizing ring seat (520), a gap is arranged between the outer side of the liquid flow gap (521) and the inner side of the second stabilizing ring seat (520), the outer side of the balance weight ring sleeve (530) is fixedly sleeved with a bearing ring (522), the second stabilizing ring seat (520) is fixedly sleeved on the outer side of the bearing ring (522), the first stabilizing ring seat (510) is fixedly sleeved on the outer side of the second stabilizing ring seat (520), and a circulation groove (511) is formed in the inner side of the first stabilizing ring seat (510), and one side of the circulation groove (511) is communicated with the inner side gap of the second stabilizing ring seat (520).
2. The high-torque belt spindle for the numerically controlled grinder as claimed in claim 1, wherein the built-in motor assembly (400) includes a magnetic yoke stator (410), a permanent magnet ring seat (420) and permanent magnets (430), the permanent magnet ring seat (420) is fixedly sleeved on the outer side of the spindle drive sleeve (230), the permanent magnets (430) are fixedly sleeved on the outer side of the permanent magnet ring seat (420), an electromagnetic coil is disposed on the outer side of the magnetic yoke stator (410), the outer side of the magnetic yoke stator (410) is abutted against the inner side of the electric spindle box (100), and the permanent magnets (430) are of a permanent magnet structure and rotatably sleeved on the inner side of the magnetic yoke stator (410).
3. The high-torque belt spindle for the numerically controlled grinder as claimed in claim 1, wherein a spline rib is provided on an outer side of the clutch coupling (220), an engagement groove adapted to the spline rib is provided on an inner side of the spindle driving sleeve (230), an arrangement direction of the spline rib is the same as an output direction of the control main cylinder (300), the control main cylinder (300) is a pneumatic cylinder, and a bearing sleeve fixedly connected to one end of the moving main shaft (200) is provided at an output end of the control main cylinder (300).
4. The large-torque belt spindle for the numerically controlled grinder as claimed in claim 2, wherein the spindle driving sleeve (230) is a fine steel member, the permanent magnet ring seat (420) and the permanent magnet (430) are fixed to the outer side of the spindle driving sleeve (230), the spindle driving sleeve (230) is in a circular tube shape, the center of the circle of the spindle driving sleeve is concentric with the center of the moving spindle (200), the outer side of the spindle driving sleeve (230) is in sliding contact with the inner side of the electric spindle box (100), and a plurality of ball bearings fixed to the inner side of the electric spindle box (100) are fixedly sleeved on the outer side of the spindle driving sleeve (230).
5. The large-torque belt spindle for the numerical control grinding machine as claimed in claim 2, wherein a liquid cooling liquid inlet pipe orifice and a liquid outlet pipe orifice are formed in the surface of the electric spindle box (100), the liquid inlet pipe orifice and the liquid outlet pipe orifice are respectively located at two ends of the electric spindle box (100) and are communicated with a liquid cooling flow channel located inside the electric spindle box (100), the liquid cooling flow channel passes through the outer side of the spindle driving sleeve (230) to two ends of the permanent magnet ring seat (420), the liquid cooling flow channel is communicated with an inner side gap of the second stabilizing ring seat (520), and a circulating pump is communicated with the end portions of the liquid inlet pipe orifice and the liquid outlet pipe orifice.
6. The large-torque belt spindle for the numerically controlled grinder as claimed in claim 2, wherein the centers of the spindle driving sleeve (230), the permanent magnet ring seat (420) and the first stabilizer ring seat (510) are located on the same straight line, liquid flow ring grooves located inside the permanent magnet blocks (430) are formed in two ends of the permanent magnet ring seat (420), and the liquid flow ring grooves are communicated with the inner cavity of the second stabilizer ring seat (520) along the surface of the spindle driving sleeve (230).
7. The high-torque belt spindle for the numerically controlled grinder as claimed in claim 1, wherein the second stabilizer ring seat (520) is fixedly sleeved on the outer side of the counterweight ring sleeve (530) through a bearing ring (522), a support ring seat (531) is provided on the surface of the counterweight ring sleeve (530), one end of the support ring seat (531) penetrates through the inner side of the second stabilizer ring seat (520), and the outer periphery of the support ring seat (531) is in sliding abutment with the inner side of the first stabilizer ring seat (510).
8. The high-torque belt spindle for the numerically controlled grinder as claimed in claim 7, wherein the weight ring sleeve (530) and the support ring seat (531) are made of alloy steel, the outer periphery of the support ring seat (531) is subjected to surface hardening treatment, and flow passage gaps are formed between two sides of the support ring seat (531) and the inner side of the second stabilizing ring seat (520).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210678251.XA CN114770375B (en) | 2022-06-16 | 2022-06-16 | Large-torque belt main shaft for numerically-controlled grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210678251.XA CN114770375B (en) | 2022-06-16 | 2022-06-16 | Large-torque belt main shaft for numerically-controlled grinder |
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| Publication Number | Publication Date |
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| CN114770375A CN114770375A (en) | 2022-07-22 |
| CN114770375B true CN114770375B (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210678251.XA Active CN114770375B (en) | 2022-06-16 | 2022-06-16 | Large-torque belt main shaft for numerically-controlled grinder |
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| US1967163A (en) * | 1933-05-26 | 1934-07-17 | Gen Electric | Means for dynamically balancing machine tools |
| CN2210060Y (en) * | 1993-07-30 | 1995-10-18 | 蚌埠机床工具工业公司 | Multi-function machine tool for milling boring and drilling |
| JP2006187846A (en) * | 2005-01-07 | 2006-07-20 | Kyoritsu Seiki Kk | Cleaning method in tool mounting device and its device |
| EP3357636A1 (en) * | 2017-02-02 | 2018-08-08 | Steffen Nitschke | Tool module for finishing |
| CN110039072A (en) * | 2019-05-16 | 2019-07-23 | 王愉克 | Spindle box, main axle structure and lathe |
| CN214517623U (en) * | 2021-01-27 | 2021-10-29 | 安徽宇宙机床有限公司 | High-precision synchronous servo motor spindle for lathe |
| CN114337026A (en) * | 2021-12-23 | 2022-04-12 | 大连天晟永磁电机有限公司 | Clutch type permanent magnet synchronous motor |
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2022
- 2022-06-16 CN CN202210678251.XA patent/CN114770375B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1967163A (en) * | 1933-05-26 | 1934-07-17 | Gen Electric | Means for dynamically balancing machine tools |
| CN2210060Y (en) * | 1993-07-30 | 1995-10-18 | 蚌埠机床工具工业公司 | Multi-function machine tool for milling boring and drilling |
| JP2006187846A (en) * | 2005-01-07 | 2006-07-20 | Kyoritsu Seiki Kk | Cleaning method in tool mounting device and its device |
| EP3357636A1 (en) * | 2017-02-02 | 2018-08-08 | Steffen Nitschke | Tool module for finishing |
| CN110039072A (en) * | 2019-05-16 | 2019-07-23 | 王愉克 | Spindle box, main axle structure and lathe |
| CN214517623U (en) * | 2021-01-27 | 2021-10-29 | 安徽宇宙机床有限公司 | High-precision synchronous servo motor spindle for lathe |
| CN114337026A (en) * | 2021-12-23 | 2022-04-12 | 大连天晟永磁电机有限公司 | Clutch type permanent magnet synchronous motor |
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|---|---|
| CN114770375A (en) | 2022-07-22 |
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