CN111014735B - Main shaft structure and machine tool with same - Google Patents
Main shaft structure and machine tool with same Download PDFInfo
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- CN111014735B CN111014735B CN201911268895.6A CN201911268895A CN111014735B CN 111014735 B CN111014735 B CN 111014735B CN 201911268895 A CN201911268895 A CN 201911268895A CN 111014735 B CN111014735 B CN 111014735B
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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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Abstract
The invention provides a main shaft structure and a machine tool with the same, wherein the main shaft structure comprises a shaft core; the brake disc is arranged on the shaft core so that the shaft core drives the brake disc to rotate, and the brake disc protrudes out of the shaft core; the brake assembly comprises a first brake part and a second brake part, the first brake part is movably arranged on one side of the brake disc, and the second brake part is movably arranged on the other side of the brake disc; the brake assembly has a braking state and an avoiding state, and when the brake assembly is in the braking state, the first brake part and the second brake part are clamped on the brake disc so as to stop the rotation of the shaft core; when the brake assembly is in an avoiding state, the first brake part and the second brake part are arranged at intervals with the brake disc so as to avoid the brake disc; the shaft core is provided with a driving section and a connecting section which are arranged oppositely, the connecting section is used for being connected with a to-be-connected piece, and the braking assembly and the braking disc are arranged on the connecting section. The technical problem of poor positioning accuracy of a spindle structure in the prior art during braking is solved.
Description
Technical Field
The invention relates to the technical field of numerical control machine tools, in particular to a spindle structure and a machine tool with the spindle structure.
Background
At present, when machine tools such as turning and milling compound machining centers and multi-axis machining centers are actually machined, a spindle is required to provide rotary turning action, a spindle shaft core is often required to brake a clamped part, and machining (such as milling) of another spindle is realized, so that the machine tools such as the turning and milling compound machine tools and the multi-axis machining centers require that the spindle has a spindle braking function.
At present, a common braking structure in the market is an independent clamp which is generally arranged at the rear end of a main shaft to clamp a brake disc at the rear end of the main shaft. The biggest disadvantage of this structure is: firstly, the debugging of the installation position is difficult; secondly, the transmission torque is small, and the positioning accuracy is poor.
Disclosure of Invention
The invention mainly aims to provide a spindle structure and a machine tool with the same, and aims to solve the technical problem that the spindle structure in the prior art is poor in positioning accuracy during braking.
In order to achieve the above object, according to one aspect of the present invention, there is provided a spindle structure including: the shaft core is rotatably arranged; the brake disc is arranged on the shaft core so that the shaft core drives the brake disc to rotate, and the outer edge of the brake disc protrudes out of the outer edge of the shaft core; the brake assembly comprises a first brake part and a second brake part, the first brake part is movably arranged on one side of the brake disc, and the second brake part is movably arranged on the other side of the brake disc; the brake assembly has a braking state and an avoiding state, and when the brake assembly is in the braking state, the first brake part and the second brake part are clamped on the brake disc so as to stop the rotation of the shaft core; when the brake assembly is in an avoiding state, the first brake part and the second brake part are arranged at intervals with the brake disc so as to avoid the brake disc; the shaft core is provided with a driving section and a connecting section which are arranged oppositely, the connecting section is used for being connected with a to-be-connected piece, and the braking assembly and the braking disc are arranged on the connecting section.
Further, the spindle structure further includes: the first driving structure is used for being in driving connection with the first braking portion and the second braking portion, so that the first driving structure drives the first braking portion and the second braking portion to move to a braking state.
Further, the first driving structure is a hydraulic driving structure, and the main shaft structure further includes: the end cover is arranged on the shaft core, a first groove and a first oil storage cavity are formed in the end cover, the first braking part is movably arranged in the first groove, the first oil storage cavity is communicated with the first groove, and the hydraulic driving structure drives liquid to enter the first oil storage cavity to push the first braking part to move; the gland is arranged on the shaft core, the gland and the end cover are arranged at intervals, a second groove and a second oil storage cavity are formed in the gland, the second braking portion is movably arranged in the second groove, the second oil storage cavity is communicated with the second groove, and the hydraulic driving structure drives liquid to enter the second oil storage cavity to push the second braking portion to move.
Further, the spindle structure further includes: the first bearing is covered by a gland cover so as to be protected by the gland.
Furthermore, a first flow passage is arranged on the end cover and is communicated with the first oil storage cavity, so that liquid driven by the hydraulic driving structure flows into the first oil storage cavity through the first flow passage; a second flow passage is arranged on the pressure cover and is communicated with the second oil storage cavity, so that the liquid driven by the hydraulic driving structure flows into the second oil storage cavity through the second flow passage; wherein, the first runner and the second runner are communicated.
Further, the spindle structure further includes: and the first sealing assembly is arranged between the end cover and the first braking part so as to seal a gap between the end cover and the first braking part through the first sealing assembly.
Further, the first stop portion is a first annular structure, and the first seal assembly includes: a first seal member disposed on the inner ring of the first annular structure; and the second sealing element is sleeved on the outer ring of the first annular structure.
Further, the spindle structure further includes: and a second sealing assembly disposed between the gland and the second stopper to seal a gap between the head cover and the second stopper by the second sealing assembly.
Further, the second brake portion is a second annular structure, and the second seal assembly includes: a third seal disposed on the inner race of the second annular structure; and the fourth sealing element is sleeved on the outer ring of the second annular structure.
Further, the spindle structure further includes: the piece resets, resets and sets up between first braking portion and second braking portion, and the piece that resets telescopically sets up to reset first braking portion and second braking portion through the piece that resets.
Further, the piece that resets is reset spring, and reset spring's one end and first braking portion butt, reset spring's the other end and the butt of second braking portion to reset first braking portion and second braking portion through reset spring.
According to another aspect of the present invention there is provided a machine tool comprising a spindle arrangement, the spindle arrangement being as provided above.
By applying the technical scheme of the invention, the first braking part and the second braking part can be clamped on the brake disc by making the braking assembly in the braking state, so that the braking operation is realized, and the rotation of the shaft core is stopped. Meanwhile, the brake assembly and the brake disc are arranged on the connecting section, so that the transmission chain is convenient to reduce, the transmission torque is increased, the brake response is fast, and the brake precision is improved. Therefore, the technical problem that the spindle structure in the prior art is poor in positioning accuracy during braking can be solved through the technical scheme provided by the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 illustrates an exploded view of a spindle structure provided in accordance with an embodiment of the present invention;
FIG. 2 illustrates a side view of a spindle structure provided in accordance with an embodiment of the present invention;
FIG. 3 shows a view along C-C in FIG. 2;
FIG. 4 shows an enlarged view in the circle in FIG. 3;
FIG. 5 illustrates a left side view of a spindle configuration provided in accordance with an embodiment of the present invention;
3 FIG. 3 6 3 shows 3 a 3 view 3 from 3 the 3 direction 3 A 3- 3 A 3 in 3 FIG. 3 5 3; 3 And
fig. 7 shows an enlarged view in a circle in fig. 6.
Wherein the figures include the following reference numerals:
10. a shaft core; 20. a brake disc; 30. a brake assembly; 31. a first brake section; 32. a second brake section; 40. an end cap; 41. a first flow passage; 50. a gland; 51. a second flow passage; 60. a first seal assembly; 61. a first seal member; 62. a second seal member; 70. a second seal assembly; 71. a third seal member; 72. a fourth seal member; 80. a reset member; 90. and (4) a main spindle box.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 7, the embodiment of the present invention provides a main shaft structure including a shaft core 10, a brake disc 20, and a brake assembly 30, the shaft core 10 being rotatably provided; the brake disc 20 is disposed on the shaft core 10, so that the shaft core 10 drives the brake disc 20 to rotate, and the outer edge of the brake disc 20 is disposed to protrude from the outer edge of the shaft core 10. The brake assembly 30 comprises a first brake part 31 and a second brake part 32, the first brake part 31 is movably arranged on one side of the brake disc 20, and the second brake part 32 is movably arranged on the other side of the brake disc 20; the brake unit 30 has a braking state and a retracted state, and when the brake unit 30 is in the braking state, the first braking portion 31 and the second braking portion 32 are interposed between the brake disks 20 to stop the rotation of the shaft core 10. When the brake assembly 30 is in the retracted state, the first braking portion 31 and the second braking portion 32 are both spaced apart from the brake disc 20 to retract the brake disc 20. The shaft core 10 has a driving section and a connecting section, which are disposed opposite to each other, and the connecting section is used for connecting a to-be-connected component, and the brake assembly 30 and the brake disc 20 are both disposed on the connecting section.
By adopting the technical scheme provided by the embodiment, since the brake assembly 30 and the brake disc 20 are both arranged on the connecting section, that is, the brake assembly 30 and the brake disc 20 are both located at the front end of the shaft core 10, the first brake part 31 and the second brake part 32 can be clamped on the brake disc 20 by making the brake assembly 30 in the braking state, so that the braking operation is realized, and the shaft core 10 stops rotating. Through the clamping braking structure of the first braking portion 31 and the second braking portion 32, the extra axial force generated by the first braking portion 31 and the second braking portion 32 on the axle core 10 during braking can be eliminated, and therefore the axial positioning precision is greatly improved. Meanwhile, the abrasion conditions of the brake assembly 30 and the brake disc 20 during unilateral positioning are reduced, and the service life of the main shaft structure is prolonged. Meanwhile, the brake assembly 30 and the brake disc 20 are both arranged on the connecting section, so that the transmission chain is convenient to reduce, the transmission torque is increased, the brake response is fast, and the brake precision is improved.
Specifically, the spindle structure in this embodiment further includes a first driving structure, and the first driving structure is configured to be in driving connection with the first braking portion 31 and the second braking portion 32, so that the first driving structure drives the first braking portion 31 and the second braking portion 32 to move to the braking state. With such an arrangement, it is possible to facilitate automatic braking operations of the first braking portion 31 and the second braking portion 32, and to facilitate improvement of convenience and degree of automation of the operations.
Specifically, the main shaft structure in this embodiment further includes a second driving structure, and the second driving structure is connected to the driving section of the shaft core 10, so as to drive the shaft core 10 to rotate through the second driving structure. Specifically, the second driving structure in this embodiment may be a motor.
In the present embodiment, the first driving structure may be a hydraulic driving structure, and the main shaft structure further includes an end cap 40 and a gland 50, the end cap 40 being disposed on the shaft core 10, specifically, the end cap 40 in the present embodiment is disposed at an end portion of the front end of the shaft core 10. The end cover 40 is provided with a first groove and a first oil storage cavity, the first braking portion 31 is movably arranged in the first groove, the first oil storage cavity is communicated with the first groove, and the hydraulic driving structure drives liquid to enter the first oil storage cavity so as to push the first braking portion 31 to move. The gland 50 is arranged on the shaft core 10, the gland 50 and the end cover 40 are arranged at intervals, a second groove and a second oil storage cavity are arranged on the gland 50, the second braking portion 32 is movably arranged in the second groove, the second oil storage cavity is communicated with the second groove, and the hydraulic driving structure drives liquid to enter the second oil storage cavity to push the second braking portion 32 to move. By adopting the arrangement, the brake assembly 30 is arranged in the end cover 40 and the gland 50, so that the structure of the main shaft is more compact, the outer pipe is more tidy and beautiful, and the problems of poor appearance integrity, difficult assembly and debugging and the like when an independent brake structure is used are solved.
In another embodiment of the present invention, the first driving structure may be a motor.
Specifically, the main shaft structure in this embodiment further includes a first bearing, and the gland 50 is covered on the first bearing, so as to protect the first bearing through the gland 50. With the arrangement, the brake disc 20 and the brake assembly 30 are both located at the front end of the first bearing, and the brake disc 20 is located at the front end of the shaft core 10 in an air-tight position, so that the brake disc 20 can be used as a protective barrier for the first bearing (the first bearing is a front bearing), chips, cooling water and the like can be prevented from entering the front bearing, the protection of the front bearing is facilitated, and the service life and the reliability of the main shaft structure are improved. Meanwhile, the structure can replace the airtight structure of the shaft core 10, so that the structure is simplified.
In this embodiment, a first flow passage 41 is provided in the end cover 40, and the first flow passage 41 communicates with the first oil storage chamber, so that the liquid driven by the hydraulic drive structure flows into the first oil storage chamber through the first flow passage 41. The gland 50 is provided with a second flow passage 51, and the second flow passage 51 is communicated with the second oil storage cavity, so that the liquid driven by the hydraulic driving structure flows into the second oil storage cavity through the second flow passage 51. The first flow passage 41 and the second flow passage 51 are connected to each other. With the arrangement, because the first flow passage 41 is communicated with the second flow passage 51, according to the principle of a communicating vessel, the pressures applied to the two ends of the brake disc 20 are equal, the brake disc 20 does not generate acting force and does not transmit extra axial force to the shaft core 10 and the bearing, thereby effectively protecting the shaft core 10 and the bearing, avoiding axial movement and improving the positioning accuracy.
Specifically, the first flow channel 41 in this embodiment includes a first horizontal flow channel and a first vertical flow channel, an end portion of the first horizontal flow channel is communicated with an end portion of the first vertical flow channel, and the first horizontal flow channel and the first vertical flow channel are arranged at an angle of 90 °. The second flow path 51 includes a second horizontal flow path and a second vertical flow path, and an end portion of the second horizontal flow path communicates with a middle portion of the second vertical flow path. The second horizontal flow passage communicates with the first horizontal flow passage to communicate the first flow passage 41 with the second flow passage 51, thereby equalizing the braking force received at both ends of the brake disc 20.
In order to ensure the sealing performance, the main shaft structure in the present embodiment further includes a first seal assembly 60, and the first seal assembly 60 is disposed between the end cover 40 and the first stopper 31 to seal a gap between the end cover 40 and the first stopper 31 by the first seal assembly 60.
The first stopper 31 in this embodiment is a first annular structure. The first seal assembly 60 includes a first seal 61 and a second seal 62, the first seal 61 being disposed on an inner ring of the first annular structure and the second seal 62 being disposed on an outer ring of the first annular structure. With such an arrangement, the sealing effect can be improved better, and the liquid is prevented from flowing out from the gap between the first stopper portion 31 and the first groove.
In order to better ensure the sealing performance, the main shaft structure in this embodiment further includes a second seal assembly 70, and the second seal assembly 70 is disposed between the gland 50 and the second stopper 32 to seal a gap between the end cover 40 and the second stopper 32 by the second seal assembly 70.
The second brake 32 in this embodiment is a second annular structure, and the second seal assembly 70 includes a third seal 71 and a fourth seal 72, the third seal 71 being disposed on an inner ring of the second annular structure, and the fourth seal 72 being disposed on an outer ring of the second annular structure. With such an arrangement, the sealing effect can be improved better, and the liquid is prevented from flowing out from the gap between the second stopper portion 32 and the second groove.
In this embodiment, the main shaft structure further includes a reset member 80, the reset member 80 is disposed between the first braking portion 31 and the second braking portion 32, and the reset member 80 is telescopically disposed to reset the first braking portion 31 and the second braking portion 32 through the reset member 80, and reset the braking assembly 30 to the avoiding state, so that the shaft core 10 normally operates.
Specifically, the reset member 80 in this embodiment may be a reset spring, one end of the reset spring abuts against the first braking portion 31, and the other end of the reset spring abuts against the second braking portion 32, so as to reset the first braking portion 31 and the second braking portion 32 through the reset spring, thereby improving the stability of the reset. Alternatively, the reset member 80 may be a reset disc spring.
The spindle structure in this embodiment is an electric spindle, and particularly relates to an electric spindle with a spindle core braking function, which is composed of a spindle box 90, a motor, a spindle core 10, a front bearing set, a rear bearing set, an oil cylinder flange, a gland 50, a braking unit (the braking unit includes a braking component 30), and the like, wherein the spindle core 10 is driven by the motor to rotate to drive a workpiece (the workpiece is a to-be-connected member) to turn. When the machined part needs other machining (such as milling and drilling), the hydraulic station drives the front-end brake unit to enable the brake sliding blocks (the first brake part 31 and the second brake part 32 are both brake sliding blocks) to move oppositely, so that the shaft core 10 is braked, the shaft core 10 is locked, and the machining of other main shafts (such as a milling main shaft) of the machine tool is realized.
In this embodiment, the brake unit is composed of a hydraulic station, a brake disc 20, a hydraulic interface, a brake slider, a flow channel, etc., and the brake disc 20 is fixed on a flange surface protruding from the front end of the shaft center and rotates together with the shaft core 10. Set up hydraulic pressure interface, second runner 51, second braking portion 32 on the bearing gland 50, inside second braking portion 32 placed the second recess at bearing gland 50, the interior outer fitting surface of two parts all sets up the sealing washer, has set up the second oil storage chamber between second braking portion 32 and the bearing gland 50. The front end gland 50 is provided with the first flow channel 41 and the first braking portion 31, the first braking portion 31 is placed in a first groove of the bearing gland 50, the inner and outer matching surfaces of the two parts are provided with sealing rings, and a first oil storage cavity is formed between the first braking portion 31 and the bearing gland 50. A return spring is arranged between the bearing gland 50 and the front end gland 50, the return spring is fixed on the bosses of the first braking portion 31 and the second braking portion 32, and the return spring is in a compressed state after the first braking portion 31 and the second braking portion 32 are assembled.
The working mode of the braking action of the spindle structure in this embodiment is as follows:
under the action of a return spring, the first braking portion 31 is separated from the second braking portion 32 and does not contact with the brake disc 20, the shaft core 10 can rotate freely, when the numerical control machine sends a locking instruction of the shaft core 10, a hydraulic station of the machine tool is started, hydraulic oil enters from a main shaft hydraulic interface, enters into oil storage cavities of the front end gland 50 and the bearing gland 50 from the first flow passage 41 and the second flow passage 51 respectively, and pushes the first braking portion 31 and the second braking portion 32 to move towards each other, so that the brake disc 20 fixed on the shaft core 10 is held tightly, and the braking of the shaft core 10 is realized. When the numerical control machine sends a locking releasing instruction of the shaft core 10, the hydraulic station of the machine tool unloads, the oil pressure of the oil storage cavities of the front end gland 50 and the bearing gland 50 disappears, the first braking part 31 and the second braking part 32 return under the action of the spring force, and the braking state of the shaft core 10 is released.
In another embodiment of the present invention, a machine tool is provided, which includes a spindle structure provided in the above embodiments.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the braking assembly adopts a double-braking-block structure, the axial braking force is more uniform, and the main shaft is basically not influenced by additional braking force, so that the axial float is small, and the positioning precision is improved. The braking structure is arranged at the front end of the main shaft, the transmission chain is reduced, the transmission torque is increased, the braking response is fast, and the positioning precision is improved. The braking structure is arranged at the front end of the front bearing of the main shaft, can prevent impurities such as cutting and the like from being carried out in the main shaft, plays a role in sealing and protecting the front bearing, and can replace a main shaft air sealing structure to be removed. The brake structure is built in, so that the main shaft structure is more compact, and the appearance is neat and attractive.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A spindle structure, comprising:
a shaft core (10) rotatably provided;
the brake disc (20) is arranged on the shaft core (10) so that the shaft core (10) drives the brake disc (20) to rotate, and the outer edge of the brake disc (20) protrudes out of the outer edge of the shaft core (10);
a brake assembly (30), the brake assembly (30) comprising a first brake portion (31) and a second brake portion (32), the first brake portion (31) being movably disposed on one side of the brake disc (20), the second brake portion (32) being movably disposed on the other side of the brake disc (20); the brake assembly (30) has a braking state and a avoiding state, and when the brake assembly (30) is in the braking state, the first braking portion (31) and the second braking portion (32) are clamped on the brake disc (20) so as to stop the rotation of the shaft core (10); when the brake assembly (30) is in the avoiding state, the first brake part (31) and the second brake part (32) are arranged at intervals with the brake disc (20) to avoid the brake disc (20);
the shaft core (10) is provided with a driving section and a connecting section which are oppositely arranged, the connecting section is used for being connected with a part to be connected, and the brake assembly (30) and the brake disc (20) are arranged on the connecting section;
a first driving structure, which is used for being in driving connection with the first braking part (31) and the second braking part (32) so as to drive the first braking part (31) and the second braking part (32) to move to the braking state;
the first driving structure is a hydraulic driving structure, and the main shaft structure further comprises:
the end cover (40) is arranged on the shaft core (10), a first groove and a first oil storage cavity are formed in the end cover (40), the first braking portion (31) is movably arranged in the first groove, the first oil storage cavity is communicated with the first groove, and the hydraulic driving structure drives liquid to enter the first oil storage cavity to push the first braking portion (31) to move;
gland (50), set up on axle core (10), gland (50) with end cover (40) interval sets up, be provided with second recess and second oil storage chamber on gland (50), second braking portion (32) movably sets up in the second recess, second oil storage chamber with second recess intercommunication, hydraulic drive structure drive liquid gets into in the second oil storage chamber in order to promote second braking portion (32) motion.
2. The spindle structure according to claim 1, further comprising:
the first bearing is covered by the gland (50), so that the first bearing is protected by the gland (50).
3. The spindle structure according to claim 1,
a first flow passage (41) is formed in the end cover (40), and the first flow passage (41) is communicated with the first oil storage cavity, so that liquid driven by the hydraulic driving structure flows into the first oil storage cavity through the first flow passage (41);
a second flow passage (51) is arranged on the gland (50), and the second flow passage (51) is communicated with the second oil storage cavity, so that the liquid driven by the hydraulic driving structure flows into the second oil storage cavity through the second flow passage (51);
wherein the first flow passage (41) and the second flow passage (51) are arranged in a communicating manner.
4. The spindle structure according to claim 1, further comprising:
a first seal assembly (60), the first seal assembly (60) being disposed between the end cap (40) and the first stopper portion (31) to seal a gap between the end cap (40) and the first stopper portion (31) by the first seal assembly (60).
5. The spindle arrangement according to claim 4, characterized in that the first stop (31) is a first annular arrangement, the first sealing assembly (60) comprising:
a first seal (61) disposed on an inner ring of the first annular structure;
a second seal (62) disposed about the outer race of the first annular structure.
6. The spindle structure according to claim 1, further comprising:
a second seal assembly (70), the second seal assembly (70) being disposed between the gland (50) and the second detent (32) to seal a gap between the end cap (40) and the second detent (32) with the second seal assembly (70).
7. The spindle arrangement of claim 6, wherein the second brake (32) is a second annular arrangement, the second seal assembly (70) comprising:
a third seal (71) disposed on an inner ring of the second annular structure;
a fourth seal (72) fitted over the outer race of the second annular structure.
8. The spindle structure according to claim 1, further comprising:
the resetting piece (80) is arranged between the first braking portion (31) and the second braking portion (32), and the resetting piece (80) is telescopically arranged so as to reset the first braking portion (31) and the second braking portion (32) through the resetting piece (80).
9. The spindle structure according to claim 8, wherein the return member (80) is a return spring, one end of which abuts against the first stopper portion (31) and the other end of which abuts against the second stopper portion (32) to return the first stopper portion (31) and the second stopper portion (32) by the return spring.
10. A machine tool comprising a spindle structure, the spindle structure being as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911268895.6A CN111014735B (en) | 2019-12-11 | 2019-12-11 | Main shaft structure and machine tool with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911268895.6A CN111014735B (en) | 2019-12-11 | 2019-12-11 | Main shaft structure and machine tool with same |
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| CN111014735A CN111014735A (en) | 2020-04-17 |
| CN111014735B true CN111014735B (en) | 2021-02-09 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201002194Y (en) * | 2006-12-08 | 2008-01-09 | 天水星火机床有限责任公司 | Numerical control machine main shaft braking device |
| JP2009248244A (en) * | 2008-04-07 | 2009-10-29 | Tsudakoma Corp | Rotating resistance device for spindle drive of machine tool |
| CN201702386U (en) * | 2010-06-23 | 2011-01-12 | 浙江凯达机床股份有限公司 | Turning center spindle hydraulic lock device |
| CN203401348U (en) * | 2013-08-21 | 2014-01-22 | 山东新安凯科控科技有限公司 | Main shaft brake device |
| CN203557177U (en) * | 2013-09-17 | 2014-04-23 | 南京数控机床有限公司 | Main shaft brake device |
| CN105014226A (en) * | 2015-06-23 | 2015-11-04 | 苏州安庆富电子科技有限公司 | Spindle box and friction welding machine with spindle box |
| CN205271554U (en) * | 2016-01-10 | 2016-06-01 | 佛山市锐石精密机械有限公司 | Lathe main shaft belt pulley hydraulic pressure presss from both sides |
| CN106141216A (en) * | 2016-08-02 | 2016-11-23 | 北京超同步伺服股份有限公司 | There is friction clamping and the numerically-controlled slide of arbitrary indexing function |
| CN205799057U (en) * | 2016-06-30 | 2016-12-14 | 宁波市镇海升翔数控设备有限公司 | Hydraulic locking sheet on numerical control device |
-
2019
- 2019-12-11 CN CN201911268895.6A patent/CN111014735B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201002194Y (en) * | 2006-12-08 | 2008-01-09 | 天水星火机床有限责任公司 | Numerical control machine main shaft braking device |
| JP2009248244A (en) * | 2008-04-07 | 2009-10-29 | Tsudakoma Corp | Rotating resistance device for spindle drive of machine tool |
| CN201702386U (en) * | 2010-06-23 | 2011-01-12 | 浙江凯达机床股份有限公司 | Turning center spindle hydraulic lock device |
| CN203401348U (en) * | 2013-08-21 | 2014-01-22 | 山东新安凯科控科技有限公司 | Main shaft brake device |
| CN203557177U (en) * | 2013-09-17 | 2014-04-23 | 南京数控机床有限公司 | Main shaft brake device |
| CN105014226A (en) * | 2015-06-23 | 2015-11-04 | 苏州安庆富电子科技有限公司 | Spindle box and friction welding machine with spindle box |
| CN205271554U (en) * | 2016-01-10 | 2016-06-01 | 佛山市锐石精密机械有限公司 | Lathe main shaft belt pulley hydraulic pressure presss from both sides |
| CN205799057U (en) * | 2016-06-30 | 2016-12-14 | 宁波市镇海升翔数控设备有限公司 | Hydraulic locking sheet on numerical control device |
| CN106141216A (en) * | 2016-08-02 | 2016-11-23 | 北京超同步伺服股份有限公司 | There is friction clamping and the numerically-controlled slide of arbitrary indexing function |
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| CN111014735A (en) | 2020-04-17 |
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