Sectional type power supply main shaft

Abstract

The utility model relates to the technical field of precision machining, and discloses a sectional type power supply main shaft which comprises a main shaft body, a shaft core and a wireless induction module, and the wireless induction module comprises a power receiving module and a power supply module which are oppositely arranged at intervals. A shaft core is arranged in the main shaft body, and the shaft core rotates relative to the main shaft body; a wireless induction module is arranged in the main shaft body and located on the peripheral face of the shaft core, and the power receiving module and / or the power supply module are / is of a sectional structure. The main shaft provided by the utility model realizes electric energy transmission through the power receiving module and the power supply module which are arranged at an interval, and the power receiving module and / or the power supply module adopt a sectional structure, so that the power receiving module and the power supply module can be conveniently mounted and matched, the electromagnetic field energy conversion efficiency is improved, and the energy loss is reduced, thereby ensuring the reliability of electric energy transmission; the working efficiency of the main shaft is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision machining, and more specifically, to a main shaft with segmented power supply. Background Art

[0002] Ultrasonic machining is widely used in the machining of non-metallic, hard and brittle materials that are difficult to machine, as well as in the machining of tiny holes and deep holes, because the tool tip has ultrasonic energy. The spindle generally transmits energy through a wireless sensing module. In order to improve the rigidity of the overall structure of the spindle, the wireless sensing module is built into the spindle body, and the power supply module and the power receiving module are used for clearance matching. The power supply module and the power receiving module usually use an integrated structure of magnetic core and coil to achieve energy transmission, but the magnetic core and coil are inconvenient to assemble. When the wireless sensing module is built into the spindle body, it also affects the working efficiency and accuracy of the spindle. Utility Model Content

[0003] The purpose of the utility model is to provide a segmented power supply spindle to address the technical problems existing in the prior art, which is convenient for installation and matching, ensures the reliability of energy transmission, and improves the working efficiency of the spindle.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] The utility model provides a segmented power supply spindle, comprising a spindle body, a shaft core, and a wireless induction module, wherein the wireless induction module comprises a power receiving module and a power supply module which are arranged oppositely and at intervals;

[0006] An axis core is arranged in the main shaft body, and the axis core rotates relative to the main shaft body; a wireless sensing module is arranged in the main shaft body and on the outer peripheral surface of the axis core, and the power receiving module and / or power supply module adopts a segmented structure.

[0007] Furthermore, the main shaft also includes a transducer assembly, which is arranged at the end of the shaft core, the transducer assembly is connected to the power receiving module, and the power supply module is connected to an external power supply.

[0008] Furthermore, the power receiving module and the power supply module are arranged along the radial direction of the shaft core, the power receiving module is located at the outer periphery of the shaft core, and the power supply module and the power receiving module are opposite to each other and form a gap.

[0009] Furthermore, the power receiving module includes a power receiving magnetic core and a power receiving coil. The power receiving magnetic core is a ring structure and is arranged on the outer circumference of the shaft core. The outer circumference of the power receiving magnetic core is provided with a magnetic core recess, and the power receiving coil is arranged in the magnetic core recess and the two are non-contact. The power receiving coil corresponds to the position of the power supply module.

[0010] Furthermore, the power receiving module also includes a power receiving frame, which is embedded in the magnetic core recess; the outer peripheral surface of the power receiving frame is also provided with a frame recess, and the power receiving coil is arranged in the frame recess.

[0011] Furthermore, the power supply module includes a power supply electromagnetic core, a power supply skeleton, and a power supply coil. The power supply skeleton is provided with a power supply coil and corresponds to the position of the power receiving coil. The power supply electromagnetic core adopts a segmented structure, and the power supply electromagnetic core is sleeved on the power supply skeleton and is non-contact with the power supply coil.

[0012] Furthermore, the power supply electromagnetic core includes a plurality of power supply electromagnetic core units respectively arranged on the periphery of the power supply skeleton, the inner circumference of the power supply electromagnetic core unit is provided with a magnetic core groove, and the outer circumference of the power supply skeleton is provided with a skeleton groove; the power supply skeleton is arranged in the magnetic core groove, and the power supply coil is arranged in the skeleton groove and corresponds to the position of the magnetic core groove.

[0013] Furthermore, a wire passing recess is provided on the circumferential outer edge of the power receiving frame and / or the power supply frame.

[0014] Furthermore, the main shaft also includes a bearing group and a spacer ring arranged axially along the shaft core, and bearing groups are respectively arranged on both sides of the wireless sensing module, and a spacer ring is arranged between the wireless sensing module and the corresponding bearing group.

[0015] Furthermore, the main shaft also includes a front end cover, a rear end cover and a pressure cover. The two ends of the main shaft body are respectively provided with a front end cover and a rear end cover, and a pressure cover is provided between the shaft core and the rear end cover.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The main shaft provided by the utility model realizes power transmission through the power receiving module and the power supply module which are arranged at intervals, and the power receiving module and / or the power supply module adopts a segmented structure, which is convenient for the installation and coordination of the two, improves the electromagnetic field energy conversion efficiency, reduces energy loss, thereby ensuring the reliability of power transmission and improving the working efficiency of the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme of the utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 This is a structural diagram of the main shaft with segmented power supply in the utility model.

[0020] Figure 2 It is a structural diagram of the wireless sensing module in the utility model.

[0021] Figure 3 It is an exploded view of the wireless sensing module in the present utility model.

[0022] Figure 4 This is the front view of the wireless sensing module in the present utility model.

[0023] Figure 5 It is a cross-sectional view of the wireless sensing module in the present utility model.

[0024] Among them, 1-spindle body, 2-axis core, 3-power receiving module, 4-power supply module, 5-front end cover, 6-rear end cover, 7-transducer assembly, 8-front bearing group, 9-rear bearing group, 10-inner spacer, 11-outer spacer, 12-pressure cover, 31-receiving magnetic core, 32-power receiving skeleton, 33-power receiving coil, 41-power supply magnetic core, 42-power supply skeleton, 43-power supply coil, 311-magnetic core recess, 321-skeleton recess, 322-first wire passing recess, 411-power supply magnetic core unit, 412-magnetic core groove, 421-skeleton groove, 422-second wire passing recess. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the directions or positions indicated by terms such as "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of the utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In the specification and claims of the utility model and the above-mentioned drawings, when an element is referred to as "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as "connected to" another element, it may be directly or indirectly connected to the other element.

[0027] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] See also Figure 1 As shown, the utility model provides a segmented power supply spindle, comprising a spindle body 1, a shaft core 2, and a wireless sensing module, wherein the wireless sensing module comprises a power receiving module 3 and a power supply module 4 which are arranged oppositely and at intervals;

[0029] An axis core 2 is arranged inside the spindle body 1, and the axis core 2 can rotate relative to the spindle body 1; a wireless sensing module is arranged inside the spindle body 1 and on the outer peripheral surface of the axis core 2, and the power receiving module 3 and / or the power supply module 4 adopts a segmented structure.

[0030] Specifically, the power receiving module 3 and the power supply module 4 can be arranged oppositely and spaced apart along the axial direction or radial direction of the shaft core 2 to meet different processing requirements of the spindle. The power receiving module 3 and / or the power supply module 4 adopt a segmented structure, which is convenient for the installation of the two in the spindle body 1, and also convenient for adjusting the gap between the power receiving module 3 and the power supply module 4 to achieve reliable transmission of electrical energy.

[0031] Furthermore, the main shaft also includes a transducer assembly 7, which is arranged at the end of the shaft core 2, the transducer assembly 7 is connected to the power receiving module 3, and the power supply module 4 is connected to an external power supply.

[0032] Specifically, the spindle body 1 and the shaft core 2 are respectively provided with wire holes, and the power receiving module 3 is connected to the transducer assembly 7 by passing the wire through the wire hole, and the power supply module 4 is connected to the external power supply, so that power transmission can be realized and the spindle can realize ultrasonic processing. The transducer assembly 7 is arranged at the end of the shaft core 2, so that the overall structure is compact, and it is also convenient to install the tool handle, and it can meet different processing requirements.

[0033] Furthermore, the power receiving module 3 and the power supply module 4 are arranged along the radial direction of the shaft core 2, the power receiving module 3 is arranged on the outer periphery of the shaft core 2, the power supply module 4 and the power receiving module 3 are opposite to each other and form a gap. The radial arrangement can reduce the axial dimension of the spindle body 1, which is convenient for adapting to the installation of machine tools of different sizes, thereby meeting different processing requirements.

[0034] For further information, see Figure 2 to Figure 4As shown, the power receiving module 3 includes a power receiving magnetic core 31 and a power receiving coil 33. The power receiving magnetic core 31 is a ring structure, and the inner circumference of the power receiving magnetic core 31 is mounted in cooperation with the outer circumference of the shaft core 2. The outer circumference of the power receiving magnetic core 31 is provided with a magnetic core recess 311, and the power receiving coil 33 is arranged in the magnetic core recess 311 and the two are non-contact, and the power receiving coil 33 corresponds to the position of the power supply module 4.

[0035] Specifically, the receiving magnetic core 31 adopts an annular structure and is an integrated structure, which is convenient for installation with the shaft core 2 and can reduce energy loss, and is provided with a magnetic core recess 311, which is convenient for the receiving coil 33 to be wound and arranged on the receiving magnetic core 31. In order to make the receiving coil 33 and the receiving magnetic core 31 non-contact, an insulating layer can be provided on the surface of the magnetic core recess 311 to separate the receiving magnetic core 31 and the receiving coil 33, thereby ensuring the overall structure and working reliability of the power receiving module 3.

[0036] Furthermore, the power receiving module 3 also includes a power receiving frame 32, on which a power receiving coil 33 is arranged, and embedded in the magnetic core recess 311, that is, the inner circumference and side surfaces of the power receiving frame 32 are respectively matched with the bottom wall and side walls of the magnetic core recess 311. The outer circumference of the power receiving frame 32 is also provided with a frame recess 321, in which a power receiving coil 33 is arranged, for easy installation and matching.

[0037] Specifically, the power receiving frame 32 may be provided with a cutout, or a segmented structure may be adopted, so that the power receiving frame 32 is conveniently embedded in the magnetic core recess 311, thereby ensuring the reliability of the overall structural installation of the power receiving module 3. In other embodiments, the power receiving frame 32 may be provided with two retaining rings spliced ​​into a ring structure, and an insulating tape is provided in the middle of the retaining ring to facilitate the winding of the power receiving coil 33, and the power receiving coil 33 may be non-contacted with the magnetic core 31 of the power receiving module, thereby ensuring the reliability of power transmission.

[0038] Furthermore, the power supply module 4 includes a power supply electromagnetic core 41, a power supply skeleton 42, and a power supply coil 43, and the power supply skeleton 42 is provided with a power supply coil 42; the power supply electromagnetic core 41 adopts a segmented structure, and the power supply electromagnetic core 41 is sleeved on the power supply skeleton 42 and is non-contact with the power supply coil 42; the power supply coil 42 is located in the cavity formed by the power supply electromagnetic core 41 and the power supply skeleton 42, and the power supply skeleton 42 corresponds to the position of the power receiving coil 33.

[0039] Specifically, since the power supply module 4 and the power receiving module 3 are arranged along the radial direction of the shaft core 2, that is, Figure 1As shown in the figure, the power supply coil 43 is located above the power receiving coil 33. In order to facilitate the installation of the power supply coil 43 and avoid it from falling off due to loose installation, the power supply coil 43 is installed through the power supply frame 42 and placed in the cavity formed by the power supply frame 42 and the power supply electromagnetic core 41 to ensure the reliability of installation and matching.

[0040] Furthermore, the power supply electromagnetic core 41 includes multiple power supply electromagnetic core units 411, all of which are respectively sleeved on the outer periphery of the power supply skeleton 42, and both ends of all of the power supply electromagnetic core units 411 are respectively connected to form a ring structure, which facilitates the coordinated installation of the power supply electromagnetic core 41 and the power supply skeleton 42.

[0041] Specifically, since the power supply coil 43 is placed in the cavity formed by the power supply core 41 and the power supply skeleton 42, the power supply core 41 adopts multiple power supply core units 411, and the power supply coil 43 can be first set on the power supply skeleton 42, and then the multiple power supply core units 411 are docked and matched with the power supply skeleton 42 to ensure the reliability of the overall structure of the power supply module 4, and make the magnetic flux transmission of the power supply core 41 seamless, reduce the magnetic flux loss, and thus improve the power transmission power. The number of power supply core units 411 can be adjusted according to actual needs, and in order to reduce the energy loss of the power supply core 41, the power supply core 41 adopts two equally divided power supply core units 411.

[0042] Furthermore, a magnetic core groove 412 is provided on the inner circumference of the power supply magnetic core unit 411, and a skeleton groove 421 is provided on the outer circumference of the power supply skeleton 42; the power supply skeleton 42 is provided in the magnetic core groove 412, and the power supply coil 43 is provided in the skeleton groove 421 and corresponds to the position of the magnetic core groove 412.

[0043] In other embodiments, the plurality of power supply core units 411 are all annular structures, and the sides of each power supply core unit 411 are butted and respectively arranged on the power supply skeleton 42, which can also make the overall installation of the power supply module 4 convenient and reliable. That is, the power supply core 41 can be equally divided along its axial direction or radial direction, and the plurality of equally divided power supply core units 411 are butted and arranged on the outer peripheral surface of the power supply skeleton 42, which can make the installation of the power supply module 4 convenient and reliable.

[0044] Furthermore, in order to facilitate the power receiving coil 33 to be circumferentially arranged on the power receiving frame 32, a first wire passing recess 322 is provided on the circumferential outer edge of the power receiving frame 32, so that the power receiving coil 33 can pass through and be circumferentially arranged in the frame recess 321. Similarly, a second wire passing recess 422 is provided on the circumferential outer edge of the power supply frame 42, so that the power supply coil 43 can pass through and be circumferentially arranged in the frame groove 421.

[0045] Specifically, the wire-passing recesses (i.e., the first wire-passing recesses 322 and the second wire-passing recesses 422) are evenly distributed along the circumference of the power receiving frame 32 or the power supply frame 42, and the wire-passing recesses can adopt an arc-shaped structure or an arc-shaped structure, making the installation of the power receiving coil 33 or the power supply coil 43 more convenient.

[0046] Furthermore, a spacer is provided in the spindle body 1 , and the spacer is provided on the outer periphery of the shaft core 2 , and is used to limit the wireless sensing module and pre-tighten the bearing group in the spindle body 1 .

[0047] In this embodiment, since the power receiving module 3 and the power supply module 4 of the wireless sensing module are arranged radially along the axis core 2, two groups of spacers are respectively arranged on both sides of the wireless sensing module, and each group of spacers includes an inner spacer 10 and an outer spacer 11. The inner spacer 10 is placed on one side of the power receiving module 3 and limits the power receiving module 3. The outer spacer 11 is placed on one side of the power supply module 3 and limits the power supply module 4, thereby ensuring the installation reliability of the overall structure.

[0048] In this embodiment, the main shaft body 1 and the shaft core 2 are connected and cooperated by the front bearing group 8 and the rear bearing group 9, which can enable the shaft core 2 to rotate reliably. The front bearing group 8 and the rear bearing group 9 are respectively located on both sides of the wireless sensing module and are placed on the side of the spacer away from the wireless sensing module, so that the overall structure is compact to install and the layout is reasonable.

[0049] In this embodiment, the two ends of the main shaft body 1 are also provided with a front cover 5 and a rear cover 6, which are respectively used to install and limit the front bearing group 8 and the rear bearing group 9. In order to further ensure the reliability of the installation, a pressure cover 12 is also provided between the shaft core 2 and the rear cover 6.

[0050] The main shaft provided by the utility model realizes power transmission through the power receiving module and the power supply module which are arranged at intervals, and the power receiving module and / or the power supply module adopts a segmented structure, which is convenient for installation and matching of the two, thereby ensuring the reliability of power transmission and improving the working efficiency of the main shaft.

[0051] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A spindle with segmented power supply, Features: It includes a main shaft body, a shaft core, and a wireless sensing module, wherein the wireless sensing module includes a power receiving module and a power supply module which are arranged oppositely and at intervals; An axis core is arranged in the main shaft body, and the axis core rotates relative to the main shaft body; a wireless sensing module is arranged in the main shaft body and on the outer peripheral surface of the axis core, and the power receiving module and / or power supply module adopts a segmented structure.

2. The spindle with segmented power supply according to claim 1, Features: The main shaft further includes a transducer assembly, which is arranged at the end of the shaft core, the transducer assembly is connected to the power receiving module, and the power supply module is connected to an external power supply.

3. The spindle with segmented power supply according to claim 1 or 2, Features: The power receiving module and the power supply module are arranged along the radial direction of the shaft core, the power receiving module is located at the outer periphery of the shaft core, and the power supply module and the power receiving module are opposite to each other and form a gap.

4. The spindle with segmented power supply according to claim 3, Features: The power receiving module includes a receiving magnetic core and a receiving magnetic coil. The receiving magnetic core is a ring structure and is arranged on the outer peripheral surface of the shaft core. The outer peripheral surface of the receiving magnetic core is provided with a magnetic core recess, and the receiving magnetic coil is arranged in the magnetic core recess and the two are non-contact. The power receiving coil corresponds to the position of the power supply module.

5. The spindle with segmented power supply according to claim 4, Features: The power receiving module further comprises a power receiving frame, which is embedded in the magnetic core recess; a frame recess is also arranged on the outer peripheral surface of the power receiving frame, and a power receiving coil is arranged in the frame recess.

6. The spindle with segmented power supply according to claim 5, Features: The power supply module includes a power supply electromagnetic core, a power supply frame, and a power supply coil. The power supply coil is arranged on the power supply frame and corresponds to the position of the power receiving coil. The power supply electromagnetic core adopts a segmented structure. The power supply electromagnetic core is sleeved on the power supply frame and is non-contact with the power supply coil.

7. The spindle with segmented power supply according to claim 6, Features: The power supply electromagnetic core includes a plurality of power supply electromagnetic core units respectively arranged on the outer periphery of the power supply skeleton, the inner circumference of the power supply electromagnetic core unit is provided with a magnetic core groove, and the outer circumference of the power supply skeleton is provided with a skeleton groove; the power supply skeleton is arranged in the magnetic core groove, and the power supply coil is arranged in the skeleton groove and corresponds to the position of the magnetic core groove.

8. The spindle with segmented power supply according to claim 6 or 7, Features: A wire passing recess is arranged on the circumferential outer edge of the power receiving frame and / or the power supply frame.

9. The spindle with segmented power supply according to claim 1, Features: The main shaft also includes a bearing group and a spacer ring arranged axially along the shaft core. The bearing groups are respectively arranged on both sides of the wireless sensing module, and a spacer ring is arranged between the wireless sensing module and the corresponding bearing group.

10. The spindle with segmented power supply according to claim 1, Features: The main shaft further comprises a front end cover, a rear end cover and a pressure cover. The two ends of the main shaft body are respectively provided with a front end cover and a rear end cover, and a pressure cover is provided between the shaft core and the rear end cover.

Images