CN107378004B - Contact type central water outlet permanent magnet synchronous electric spindle - Google Patents
Contact type central water outlet permanent magnet synchronous electric spindle Download PDFInfo
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- CN107378004B CN107378004B CN201710566490.5A CN201710566490A CN107378004B CN 107378004 B CN107378004 B CN 107378004B CN 201710566490 A CN201710566490 A CN 201710566490A CN 107378004 B CN107378004 B CN 107378004B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
- B23Q11/1023—Tool holders, or tools in general specially adapted for receiving the cutting liquid from the spindle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a contact type central water outlet permanent magnet synchronous electric spindle which comprises a machine body, a stator, a permanent magnet shaft core assembly, a cylinder assembly and a central water outlet assembly, wherein the machine body is provided with a central water outlet assembly; the permanent magnet shaft core component comprises a permanent magnet rotor, a shaft sleeve and a shaft core; the permanent magnet rotor is sleeved with a shaft core; the inter-shaft sleeve is arranged above the permanent magnet rotor; the cylinder component is arranged at the upper end of the machine body; the cylinder assembly comprises a first air passage, a second air passage, a cylinder top cover, a first piston and a second piston; the cylinder top cover, the first piston and the second piston are sequentially pressed from top to bottom along the central shaft direction of the electric spindle; the central water outlet assembly comprises a rotary joint, a connecting rod, a pull rod, a sliding core and a pull claw; the rotary joint, the connecting rod, the pull rod and the sliding core are sequentially connected from top to bottom; the pull claw is sleeved at the lower end part of the sliding core; the pulling claw and the sliding core slide relatively, so that the pulling claw is switched in a state of being opened and contracted; the electric spindle realizes central water outlet, and solves the cooling problem and chip removal problem of the cutter during ceramic machining and deep hole machining.
Description
Technical Field
The invention relates to a contact type central water outlet permanent magnet synchronous electric spindle, and belongs to the technical field of electromechanics.
Background
The electric spindle integrates the machine tool spindle and the spindle motor into a whole and drives the machine tool spindle through the motor and an external frequency converter or a driver. The electric spindle has the advantages of convenient installation, compact structure, light weight, small vibration, high rotating speed, high machining precision and stable machining effect, and is widely used for high-end machine tools. At present, the domestic electric main shaft is basically driven by an asynchronous motor. The inherent disadvantages of asynchronous motors limit the further development of asynchronous motorized spindles. The defects of the asynchronous motor are mainly that the motor has serious heating, small power factor, small power density and poor overload capacity. The permanent magnet synchronous motor has the advantages of the asynchronous motor and unique advantages. The advantages are low magnetic loss, low heat productivity, high power factor, high overload capacity and high reliability. Therefore, the permanent magnet synchronous electric spindle has a trend of replacing the traditional asynchronous electric spindle.
Because the central water outlet technology of the electric spindle is insufficient in storage, the parts are high in machining precision requirement and high in assembly difficulty, and the current electric spindle with the central water outlet function is basically absent. Considering the requirements of ceramic machining and metal deep hole machining on cutter cooling and chip removal comprehensively, the development of center water outlet becomes a necessary result.
At present, two main types of electric spindles with central water outlet exist in the market, namely a contact type central water outlet electric spindle and a non-contact type central water outlet electric spindle. The non-contact type central water outlet electric spindle transmits cooling liquid through the non-contact type rotary joint, and the central cooling liquid is prevented from entering the spindle through pneumatic sealing. And the contact type central water outlet is used for conveying the cooling liquid through the contact type rotary joint, so that a dynamic pressure sealing structure is omitted, and the stability of a central water outlet cooling system is improved. The non-contact type center water outlet has the advantage of high limit rotation speed. However, the defects are mainly that the central water outlet cooling system has poor reliability and small flow, is limited to a sealed air pressure condition and cannot bear high-pressure water. Compared with a non-contact type central water outlet electric spindle, the contact type central water outlet electric spindle has the following advantages: the center water outlet system has high reliability, large center water outlet flow and good cooling and chip removal effects, so that the contact type center water outlet has better practical value.
Disclosure of Invention
In order to overcome the defects of the prior art, the first aim of the invention is to provide a contact type central water outlet permanent magnet synchronous electric spindle which realizes central water outlet and solves the problems of cooling and chip removal of a cutter during ceramic machining and deep hole machining.
The aim of the invention can be achieved by adopting the following technical scheme: a contact type central water outlet permanent magnet synchronous electric spindle comprises a machine body, a stator, a permanent magnet shaft core assembly, a cylinder assembly and a central water outlet assembly
The stator and the permanent magnet shaft core component are arranged in the inner cavity of the machine body; the permanent magnet shaft core assembly comprises a permanent magnet rotor, a shaft sleeve and a shaft core; the permanent magnet rotor is sleeved with a shaft core; the shaft sleeve is arranged above the permanent magnet rotor;
the cylinder assembly is arranged at the upper end of the machine body; the cylinder assembly comprises a first air passage, a second air passage, a cylinder top cover, a first piston and a second piston; the cylinder top cover, the first piston and the second piston are sequentially pressed from top to bottom along the central shaft direction of the electric spindle; the outlet of the first air passage corresponds to the upper end face of the cylinder top cover; the outlet of the second air passage corresponds to the lower end face of the second piston;
the central water outlet assembly comprises a rotary joint, a connecting rod, a pull rod, a sliding core and a pull claw; the rotary joint, the connecting rod, the pull rod and the sliding core are sequentially connected from top to bottom; the rotary joint is fixedly connected with the cylinder top cover; the connecting rod and the pull rod penetrate through the air cylinder assembly and the permanent magnet shaft core assembly; the connecting rod is provided with a connecting rod flange extending from the surface of the connecting rod to the inner surface of the machine body; the lower end of the second piston is propped against the upper surface of the connecting rod flange; the rotary joint, the connecting rod, the pull rod and the sliding core are communicated; the pull claw is sleeved at the lower end part of the sliding core; the pulling claw and the sliding core slide relatively, so that the pulling claw is switched in a state of being opened and contracted;
an elastic element is arranged between the pull rod and the shaft core; the elastic element is used for resetting the pull rod upwards.
Further, the rotary joint is in threaded connection with the connecting rod, and a first sealing ring is arranged between the rotary joint and the connecting rod; the connecting rod is in threaded connection with the pull rod, and a second sealing ring is arranged between the connecting rod and the pull rod; the pull rod is in threaded connection with the sliding core; a jackscrew and a third sealing ring are arranged between the pull rod and the sliding core.
Further, a glue layer is arranged between the lower end face of the permanent magnet rotor and the shaft core; and a gap is arranged between the shaft sleeve and the permanent magnet rotor.
Further, the rotary joint is provided with an overflow hole.
Further, the outer surface of the connecting rod is provided with a first clamping ring, a second clamping ring and an external thread section from top to bottom; the diameter of the first clamping ring is larger than that of the second clamping ring; the pull rod is provided with an internal thread section and a clamping groove; the external thread section and the internal thread section are correspondingly screwed; the first clamping ring is embedded into the clamping groove.
Further, a fixing piece is arranged on the outer surface of the rotary joint; screws are penetrated in the fixing piece and the air cylinder top cover, and the rotary joint is fixedly connected with the air cylinder top cover.
Further, a sliding slope for sliding the pull claw is arranged on the outer surface of the sliding core; the distance between the point on the sliding slope surface and the central shaft of the pulling claw is gradually increased along the upper end to the lower end of the main shaft; the sliding core slides downwards to enable the pulling claw to shrink, and the sliding core slides upwards to enable the pulling claw to be spread.
Further, a fourth sealing ring is further arranged on the inner surface of the sliding core; and a positioning pressing sleeve is arranged below the fourth sealing ring.
Further, the elastic element is a belleville spring; the disc spring is fixedly arranged on the pull rod; the inner surface of the shaft core is provided with a pressing piece for pressing the disc spring.
Further, the pull claw is clamped with a central water outlet knife handle; a water flow channel is arranged in the central water outlet knife handle; the water flow channel is communicated with the sliding core, the pull rod, the connecting rod and the rotary joint.
Further, a sensor is arranged in the machine body; the sensor corresponds to the connecting rod flange.
In the invention, the 'lower' direction refers to the direction of the workpiece processing position of the electric spindle, and the 'upper' direction refers to the direction of the tail end of the electric spindle.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is provided with the central water outlet component, the reliability of the central water outlet is high gradually, and the cooling liquid flows out during working, so that the cooling and flushing can be performed in time;
2. the cylinder assembly is controlled by air pressure and drives the central water outlet assembly to reciprocate, so that the cylinder assembly has good precision, and meets the requirements of main shaft cutter unloading, cutter beating and the like;
3. the power and torque of the main shaft are improved by 25%, the acceleration and deceleration time of the main shaft is reduced by 37%, the cooling effect of a cutter is improved by 47%, the deep hole machining efficiency is improved by 41%, and the machining quality is obviously improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a cylinder assembly;
FIG. 3 is a schematic structural view of a central water outlet assembly;
fig. 4 is a schematic structural view of embodiment 2;
in the figure, 1, a machine body; 2. a stator; 3. a permanent magnet core assembly; 31. a permanent magnet rotor; 32. the shaft sleeve; 33. a shaft core; 331. a pressing member; 34. a gap; 35. a glue layer; 4. a cylinder assembly; 41. a first airway; 42. a second airway; 43. a cylinder top cover; 431. a screw; 44. a first piston; 45. a second piston; 5. a central water outlet assembly; 51. a rotary joint; 511. a fixing piece; 512. a first seal ring; 52. a connecting rod; 521. a second seal ring; 522. a first snap ring; 523. a second snap ring; 524. an external thread section; 525. a connecting rod flange; 526. a belleville spring; 53. a pull rod; 531. an internal thread segment; 532. a clamping groove; 54. a sliding core; 541. a jackscrew; 542. a third seal ring; 543. sliding slope; 544. a fourth seal ring; 545. positioning and pressing the sleeve; 55. a pulling claw; 6. a sensor; 7. a water outlet knife handle; 71. a water flow channel.
Detailed Description
The invention will be further described with reference to the accompanying drawings and detailed description below:
example 1:
referring to fig. 1, a contact type central water outlet permanent magnet synchronous electric spindle comprises a machine body 1, a stator 2, a permanent magnet shaft core assembly 3, a cylinder assembly 4, a central water outlet assembly 5 and a sensor 6; the stator 2 and the permanent magnet shaft core assembly 3 are both arranged in the inner cavity of the machine body 1; the permanent magnet shaft core assembly 3 comprises a permanent magnet rotor 31, a shaft sleeve 32 and a shaft core 33; the permanent magnet rotor 31 is sleeved with a shaft core 33; the inter-shaft sleeve 32 is arranged above the permanent magnet rotor 31;
referring to fig. 2, a cylinder assembly 4 is provided at an upper end of the body 1; the cylinder assembly 4 includes a first air passage 41, a second air passage 42, a cylinder head 43, a first piston 44, and a second piston 45; the cylinder top cover 43, the first piston 44 and the second piston 45 are sequentially pressed from top to bottom along the central axis direction of the electric spindle; the outlet of the first air passage 41 corresponds to the upper end face of the cylinder head cover 43; the outlet of the second air passage 42 corresponds to the lower end face of the second piston 45;
referring to fig. 3, the center water outlet assembly 5 includes a rotary joint 51, a connecting rod 52, a pull rod 53, a slide core 54, and a pull claw 55; the rotary joint 51, the connecting rod 52, the pull rod 53 and the slide core 54 are connected in sequence from top to bottom; the outer surface of the rotary joint 51 is provided with a fixing piece 511; screws 431 are inserted into the fixing pieces 511 and the cylinder top cover 43 to fixedly connect the rotary joint 51 and the cylinder top cover 43; the connecting rod 52 and the pull rod 53 penetrate through the cylinder assembly 4 and the permanent magnet shaft core assembly 3; the rotary joint 51 is in threaded connection with the connecting rod 52, a first sealing ring 512 is further arranged between the rotary joint 51 and the connecting rod 52, and the first sealing ring 512 is used for sealing the joint between the rotary joint 51 and the connecting rod 52;
the connecting rod 52 is in threaded connection with the pull rod 53, a second sealing ring 521 is further arranged between the connecting rod 52 and the pull rod 53, and the second sealing ring 521 is used for sealing the connecting part between the connecting rod 52 and the pull rod 53; the outer surface of the connecting rod 52 is provided with a first clamping ring 522, a second clamping ring 523 and an external thread section 524 from top to bottom; the diameter of the first snap ring 522 is greater than the diameter of the second snap ring 523; the pull rod 53 is provided with an internal thread section 531 and a clamping groove 532; the external thread section 524 and the internal thread section 531 are correspondingly screwed; the first snap ring 522 is embedded in the clamping groove 532; the connecting rod 52 is provided with a connecting rod flange 525 extending from the surface of the connecting rod 52 to the inner surface of the machine body 1; the lower end of the second piston 45 is pressed against the upper surface of the connecting rod flange 525; the rotary joint 51 is provided with overflow holes (not shown in the figure);
the pull rod 53 is in threaded connection with the sliding core 54; a jackscrew 541 and a third sealing ring 542 are also arranged between the pull rod 53 and the sliding core 54;
the rotary joint 51, the connecting rod 52, the pull rod 53 and the sliding core 54 are communicated;
the pull claw 55 is sleeved at the lower end part of the sliding core 54; the outer surface of the sliding core 54 is provided with a sliding slope 543 for sliding the pull claw 55; the distance between the point on the surface of the sliding slope 543 and the central shaft of the pulling claw 55 gradually increases along the upper end to the lower end of the main shaft; the sliding core 54 slides downwards to enable the pulling claw 55 to shrink, and the sliding core 54 slides upwards to enable the pulling claw 55 to open; the inner surface of the sliding core 54 is also provided with a fourth sealing ring 544; a positioning pressing sleeve 545 is arranged below the fourth sealing ring 544;
the pull claw 55 is clamped with a central water outlet knife handle 7; a water flow channel 71 is arranged in the central water outlet knife handle 7; the water flow channel 71 is communicated with the sliding core 54, the pull rod 53, the connecting rod 52 and the rotary joint 51;
a belleville spring 526 is also arranged between the pull rod 53 and the shaft core 33; the belleville springs 526 are fixedly arranged on the pull rod 53; the inner surface of the shaft core 33 is provided with a pressing piece 331 which presses the disc spring 526; the belleville spring 526 is used to return the pull rod 53 upward;
the sensor 6 corresponds to the connecting rod flange 525.
Working principle of permanent magnet shaft core component:
the stator side is connected with three-phase symmetrical current, and the three-phase stator is 120 degrees different in space position, so that the three-phase stator current generates a rotating magnetic field in space, and the permanent magnet rotor moves under the action of electromagnetic force in the rotating magnetic field.
Working principle of the cylinder assembly:
when the main shaft unloads the cutter, compressed gas is introduced into the cylinder top cover through the first gas channel, the cylinder top cover receives the air pressure of the compressed gas and moves downwards to push the top surface of the first piston to move downwards, the first piston pushes the second piston to move downwards, the second piston pushes the connecting rod to move downwards, the connecting rod applies pressure to the pull rod, the belleville spring is increased to deform under the pressure of the pull rod, meanwhile, the pull rod drives the sliding core to move downwards, the contact position of the pull claw and the sliding core slides upwards along the sliding slope, the pull claw is gradually far away from the sliding core, the central water outlet cutter handle is contracted and loosened, the central water outlet cutter handle is ejected out, and the cutter unloading action is completed.
When the main shaft broach, the compressed air of first air flue is closed, and the belleville spring of warp resumes elastic deformation under the condition of not receiving the cylinder pressure, and the pull rod moves up and resets, and the pull rod moves up and drives the slip core and move up, and when the position that draws claw and slip core contact is down along the slip slope gradually, draws claw and opens, simultaneously, when drawing claw and central play water handle of a knife joint, taut central play water handle of a knife accomplishes the broach action.
When the main shaft resets, the reset gas is introduced into the second air channel, the second piston is pushed upwards to be separated from the connecting rod flange under the action of the reset gas, the upper end surface of the first piston is contacted with the cylinder top cover, friction is avoided when the main shaft rotates, and the reset action is completed.
The cylinder assembly is internally provided with a first piston and a second piston which are distributed in two layers, and meanwhile, the connecting position of the connecting rod and the rotary joint is reserved; the design of the air cylinder saves the installation space, so that the rear end of the main shaft is short in overhanging, compact in structure, high in rigidity and high in stability.
Working principle of the central water outlet component:
in the high-speed rotation process of the main shaft, the rotary joint is fixed on the cylinder top cover through a fixing piece and a screw. The cooling liquid flows in from the water inlet at the upper end of the center of the rotary joint, and the first sealing ring arranged in the rotary joint seals, so that the cooling liquid is prevented from leaking into the main shaft and damaging the main shaft during high-speed rotation of the main shaft. The cooling liquid flows into the pull rod through the connecting rod, the connecting rod is in threaded connection with the pull rod, and the second sealing ring is sealed, so that the cooling water is ensured to flow along the axial direction, and the cooling liquid is not leaked into the shaft core. The pull rod is in threaded connection with the sliding core, the third sealing ring is sealed, the jackscrew is loose-proof, and the cooling liquid is ensured to be stably output along the axial direction when the main shaft runs at a high speed.
The special central water outlet knife handle is matched with the main shaft. And a fourth sealing ring is arranged in the sliding core matched with the central water outlet cutter handle for sealing, and the positioning press sleeve is used for positioning the fourth sealing ring, so that the central water outlet is ensured not to leak into the shaft core. Excess coolant that is not drained from the center water outlet handle flows out of the overflow aperture. Through the whole structure of contact seal, the stable and efficient output of the central water outlet cooling system of the main shaft in the high-speed rotation process is ensured.
The water pressure which the rotary joint can bear has obvious advantages compared with the non-contact joint, and has high use value.
The coaxiality of the connecting rod and the rotary joint is precisely controlled according to the principle:
because the rotary joint has higher requirement on the coaxiality of the connecting piece connected with the rotary joint. Therefore, the assembly and processing precision of the connecting rod connected with the rotary joint is critical to the realization of the water outlet system at the center of the main shaft.
The connecting rod is connected with the pull rod through threads. The connecting rod is provided with a first clamping ring and a second clamping ring at the matching position of the connecting rod and the pull rod, and the diameter of the first clamping ring is larger than that of the second clamping ring. Firstly, the external thread section at the front end of the connecting rod is screwed into the pull rod, the first clamping ring is a polished rod, natural alignment can be carried out, and correction can be carried out simultaneously, so that good coaxiality is ensured between the connecting rod and the pull rod, through end face positioning, the second clamping ring is embedded into the clamping groove, the height of the flange of the connecting rod is stabilized, the accuracy of the reading of the sensor is ensured, and the signal output of the cutter unloading and the cutter pulling sensed by the sensor is stable.
Example 2
The present embodiment is characterized in that: referring to fig. 4, a glue layer 34 is provided between the lower end surface of the permanent magnet rotor 31 and the shaft core 33; a gap 35 is arranged between the shaft sleeve 32 and the permanent magnet rotor 31; the remaining structure and features are the same as those of embodiment 1.
Because the permanent magnet rotor has magnetism, scrap iron can be adsorbed on the shaft core, and the scrap iron is particularly embedded in a gap between the shaft sleeve and the permanent magnet rotor, so that the scrap iron is difficult to clean. If the scrap iron cannot be cleaned, the scrap iron can be thrown out by the high-speed rotation of the main shaft, so that the service life of the electric main shaft is shortened. In order to solve the problem, the lower end face of the permanent magnet rotor is glued and then is arranged on the shaft core to form a glue layer, so that iron filings are prevented from being embedded; a gap of 1mm is designed between the permanent magnet rotor and the shaft sleeve, the risk of embedding scrap iron in subsequent processing is avoided, and the problem of hiding scrap iron of the permanent magnet shaft core component is solved.
Various other corresponding changes and modifications will occur to those skilled in the art from the foregoing description and the accompanying drawings, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (8)
1. A contact type central water outlet permanent magnet synchronous electric spindle comprises a machine body, a stator, a permanent magnet shaft core assembly, a cylinder assembly and a central water outlet assembly; it is characterized in that the method comprises the steps of,
the stator and the permanent magnet shaft core component are arranged in the inner cavity of the machine body; the permanent magnet shaft core assembly comprises a permanent magnet rotor, a shaft sleeve and a shaft core; the permanent magnet rotor is sleeved with a shaft core; the shaft sleeve is arranged above the permanent magnet rotor;
the cylinder assembly is arranged at the upper end of the machine body; the cylinder assembly comprises a first air passage, a second air passage, a cylinder top cover, a first piston and a second piston; the cylinder top cover, the first piston and the second piston are sequentially pressed from top to bottom along the central shaft direction of the electric spindle; the outlet of the first air passage corresponds to the upper end face of the cylinder top cover; the outlet of the second air passage corresponds to the lower end face of the second piston;
the central water outlet assembly comprises a rotary joint, a connecting rod, a pull rod, a sliding core and a pull claw; the rotary joint, the connecting rod, the pull rod and the sliding core are sequentially connected from top to bottom; the rotary joint is fixedly connected with the cylinder top cover; the connecting rod and the pull rod penetrate through the air cylinder assembly and the permanent magnet shaft core assembly; the connecting rod is provided with a connecting rod flange extending from the surface of the connecting rod to the inner surface of the machine body; the lower end of the second piston is propped against the upper surface of the connecting rod flange; the rotary joint, the connecting rod, the pull rod and the sliding core are communicated; the pull claw is sleeved at the lower end part of the sliding core; the pulling claw and the sliding core slide relatively, so that the pulling claw is switched in a state of being opened and contracted;
an elastic element is arranged between the pull rod and the shaft core; the elastic element is used for resetting the pull rod upwards;
the rotary joint is in threaded connection with the connecting rod, and a first sealing ring is arranged between the rotary joint and the connecting rod; the connecting rod is in threaded connection with the pull rod, and a second sealing ring is arranged between the connecting rod and the pull rod; the pull rod is in threaded connection with the sliding core; a jackscrew and a third sealing ring are arranged between the pull rod and the sliding core;
the inner surface of the sliding core is also provided with a fourth sealing ring; and a positioning pressing sleeve is arranged below the fourth sealing ring.
2. The contact center water outlet permanent magnet synchronous motorized spindle as set forth in claim 1, wherein the rotary joint is provided with an overflow hole.
3. The contact center water outlet permanent magnet synchronous motorized spindle according to claim 1, wherein the outer surface of the connecting rod is provided with a first clamping ring, a second clamping ring and an external thread section from top to bottom; the diameter of the first clamping ring is larger than that of the second clamping ring; the pull rod is provided with an internal thread section and a clamping groove; the external thread section and the internal thread section are correspondingly screwed; the first clamping ring is embedded into the clamping groove.
4. The contact center water outlet permanent magnet synchronous electric spindle according to claim 1, wherein a fixing piece is arranged on the outer surface of the rotary joint; screws are penetrated in the fixing piece and the air cylinder top cover, and the rotary joint is fixedly connected with the air cylinder top cover.
5. The contact center water outlet permanent magnet synchronous motorized spindle as set forth in claim 1, wherein the outer surface of the sliding core is provided with a sliding slope for sliding the pull claw; the distance between the point on the sliding slope surface and the central shaft of the pulling claw is gradually increased along the upper end to the lower end of the main shaft; the sliding core slides downwards to enable the pulling claw to shrink, and the sliding core slides upwards to enable the pulling claw to be spread.
6. The contact center water outlet permanent magnet synchronous electric spindle according to claim 1, wherein the elastic element is a belleville spring; the disc spring is fixedly arranged on the pull rod; the inner surface of the shaft core is provided with a pressing piece for pressing the disc spring.
7. The contact center water outlet permanent magnet synchronous motorized spindle according to claim 1, wherein the pull claw is clamped with a center water outlet handle; a water flow channel is arranged in the central water outlet knife handle; the water flow channel is communicated with the sliding core, the pull rod, the connecting rod and the rotary joint.
8. The contact center water outlet permanent magnet synchronous motorized spindle as set forth in claim 1, wherein a sensor is further provided in the machine body; the sensor corresponds to the connecting rod flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566490.5A CN107378004B (en) | 2017-07-12 | 2017-07-12 | Contact type central water outlet permanent magnet synchronous electric spindle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566490.5A CN107378004B (en) | 2017-07-12 | 2017-07-12 | Contact type central water outlet permanent magnet synchronous electric spindle |
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| CN107378004A CN107378004A (en) | 2017-11-24 |
| CN107378004B true CN107378004B (en) | 2023-04-25 |
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| CN201710566490.5A Active CN107378004B (en) | 2017-07-12 | 2017-07-12 | Contact type central water outlet permanent magnet synchronous electric spindle |
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| CN108326327A (en) * | 2018-04-12 | 2018-07-27 | 深圳市创世纪机械有限公司 | Central water outlet and the integrated main shaft of loose knife and numerically-controlled machine tool |
| CN108927703A (en) * | 2018-08-07 | 2018-12-04 | 深圳市爱贝科精密机械有限公司 | A kind of center water yielding device of electro spindle |
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| CN109434140B (en) * | 2018-11-29 | 2024-03-29 | 深圳市爱贝科精密工业股份有限公司 | Concealed permanent magnet synchronous motorized spindle |
| CN110899733A (en) * | 2019-12-08 | 2020-03-24 | 深圳市爱贝科精密机械有限公司 | Direct-coupled mechanical main shaft |
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| CN113118834B (en) * | 2021-03-25 | 2022-10-28 | 广州市昊志机电股份有限公司 | Machine tool spindle tool changing mechanism and machine tool |
| CN113369506B (en) * | 2021-05-21 | 2022-08-12 | 深圳市爱贝科精密工业股份有限公司 | Front end cooling type oil-gas lubrication electric spindle with displacement sensor |
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| CN201186396Y (en) * | 2007-05-31 | 2009-01-28 | 北京精雕科技有限公司 | Motorized spindle center water outlet apparatus with fluid supplied on the side |
| CN103752863A (en) * | 2013-12-31 | 2014-04-30 | 广州市昊志机电股份有限公司 | Ball high-speed motorized spindle |
| CN203711866U (en) * | 2013-12-31 | 2014-07-16 | 广州市昊志机电股份有限公司 | High-speed rotation joint structure of electric spindle |
| CN104368828A (en) * | 2013-08-14 | 2015-02-25 | 东莞市科隆电机有限公司 | High-speed ball electric spindle |
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2017
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| US3717393A (en) * | 1970-03-17 | 1973-02-20 | Tos Hostivar Np | Radial fluid-film bearing |
| DE10135419A1 (en) * | 2001-07-20 | 2003-02-06 | Benz Gmbh Werkzeug U Maschb Kg | Work machine for manufacturing has a work head with a housing which is positioned near a tool spindle in an axial cooling channel |
| CN201087935Y (en) * | 2007-05-25 | 2008-07-16 | 达鹏科技股份有限公司 | Principal shaft device |
| CN201186396Y (en) * | 2007-05-31 | 2009-01-28 | 北京精雕科技有限公司 | Motorized spindle center water outlet apparatus with fluid supplied on the side |
| CN104368828A (en) * | 2013-08-14 | 2015-02-25 | 东莞市科隆电机有限公司 | High-speed ball electric spindle |
| CN103752863A (en) * | 2013-12-31 | 2014-04-30 | 广州市昊志机电股份有限公司 | Ball high-speed motorized spindle |
| CN203711866U (en) * | 2013-12-31 | 2014-07-16 | 广州市昊志机电股份有限公司 | High-speed rotation joint structure of electric spindle |
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|---|---|
| CN107378004A (en) | 2017-11-24 |
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