CN119217081B - Motor direct-drive turntable - Google Patents
Motor direct-drive turntable Download PDFInfo
- Publication number
- CN119217081B CN119217081B CN202411736181.4A CN202411736181A CN119217081B CN 119217081 B CN119217081 B CN 119217081B CN 202411736181 A CN202411736181 A CN 202411736181A CN 119217081 B CN119217081 B CN 119217081B
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- mandrel
- motor
- tail end
- groove
- protection
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- 238000007789 sealing Methods 0.000 claims description 35
- 230000002633 protecting effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000001012 protector Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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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
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
-
- 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
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
-
- 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
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of machine tool equipment and discloses a motor direct-drive rotary table which comprises a shell, a mandrel, a bearing, a rotary table, a tail plate with a mounting hole and a torque motor for driving the mandrel, wherein the mandrel is arranged in the shell through the bearing, the head end and the tail end of the mandrel are fixedly connected with the rotary table, the tail end of the mandrel passes through the mounting hole, the outer diameter of the head end and the tail end of the mandrel is larger than that of the tail end of the mandrel, a containing cavity is formed between the tail end of the mandrel and the shell, the torque motor is arranged in the containing cavity, a motor rotor of the torque motor is fixed at the tail end of the mandrel, the orthographic projection of the motor rotor on the longitudinal section of the mandrel is positioned at the tail end of the mandrel, a motor stator and the motor rotor of the torque motor are both coaxially arranged with the mandrel, and the tail end protection assembly comprises a first protection piece and a second protection piece fixedly assembled with the tail plate in the mounting hole so as to encapsulate the first protection piece in the mounting hole. Compact structure, high rotation precision and can meet the use requirement under complex processing environment.
Description
Technical Field
The invention relates to the technical field of machine tool equipment, in particular to a motor direct-drive rotary table.
Background
The motor direct-drive turntable is directly driven by a rotary motor, has excellent dynamic performance and positioning precision, and is mainly applied to machine tools such as a machining center and the like as a vertical fourth shaft or as a multi-station continuous machining indexing turntable.
The motor direct-drive turntable mainly comprises a shell, a mandrel arranged in the shell and a torque motor for driving the mandrel, wherein a turntable is fixed at the top end of the mandrel and used for installing a workpiece to be processed, and the torque motor drives the mandrel to drive the turntable to rotate as required so as to convey the workpiece to a required processing position. The existing motor direct-drive turntable generally has the following defects in structure:
firstly, a sealing ring is usually adopted to seal between the tail end of the mandrel and the bottom plate of the shell, or a single labyrinth airtight structure is arranged to realize sealing to protect the torque motor, but the sealing capability is limited, and the protection requirement of the turntable on the torque motor in a complex working environment cannot be met;
Secondly, the moment motor is installed in the bottom of dabber, leads to the whole axial height of revolving stage higher, to the great revolving stage of radial dimension, or need bear the revolving stage of quality work piece, higher axial height can lead to the carousel to produce the end diameter in the rotation in-process and jump the error, and has increased the risk that the revolving stage takes place to overturn in the use.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a motor direct-drive turntable which is compact in structure and reliable in sealing protection performance, and the working reliability and the rotation precision of the turntable can be improved.
The invention provides a motor direct-drive turntable, which comprises a shell, a mandrel, a bearing, a turntable, a tail plate with a mounting hole and a torque motor for driving the mandrel, wherein the mandrel is arranged in the shell through the bearing, the head end and the tail end of the mandrel are fixedly connected with the turntable, the tail end of the mandrel passes through the mounting hole, the outer diameter of the head end and the tail end of the mandrel is larger than that of the tail end of the mandrel, a containing cavity is formed between the tail end of the mandrel and the shell, the torque motor is arranged in the containing cavity, a motor rotor of the torque motor is fixed at the tail end of the mandrel, the orthographic projection of the motor rotor on the longitudinal section of the mandrel is positioned at the tail end of the mandrel, a motor stator and the motor rotor of the torque motor are both coaxially arranged with the mandrel, the tail end protection assembly comprises a first protection piece positioned in the mounting hole and a second protection piece fixedly assembled with the tail plate to encapsulate the first protection piece in the mounting hole, the first protection piece comprises a protection disc body fixedly connected with the mandrel and a central cylinder extending from the protection disc, the second protection piece is provided with a through hole and a gas groove connected with a gas pipe, the central cylinder is inserted in the through hole, the through hole is formed between the second protection piece and the protection disc is in the same air groove, and the first gas groove is in the gas-tight clearance is formed between the first gas groove and the gas-tight clearance and the second gas-tight clearance is formed between the first gas clearance and the gas-tight clearance and the second gas clearance and the gas-tight clearance.
In some preferred embodiments, a first step is provided near the first end of the spindle and a second step is provided near the second end of the spindle, the bearing being fitted on the first step, the radial portion of the motor mover being fixed on the second step.
In some preferred embodiments, the motor stator is fixed to the end plate, and the motor stator is located at an outer peripheral side of the motor mover.
In some preferred embodiments, the outer side wall of the central cylinder and/or the inner side wall of the through hole are provided with a plurality of first annular grooves, and the groove wall of each first annular groove from the groove bottom to the groove opening is arranged to incline towards the tail end direction of the central cylinder so as to form an air curtain with a plurality of air flow eddies when the air flow flows through the second airtight gap.
In some preferred embodiments, the trailing end of the central barrel has a sealing disk having an outer diameter greater than the outer diameter of the central barrel, and the mating gap between the sealing disk and the second guard forms a first labyrinth seal within the second seal gap.
In some preferred embodiments, the first labyrinth seal comprises a second annular protrusion provided on the sealing disk, a second annular groove provided on the inner side wall of the through hole, and the second annular protrusion is inserted into the second annular groove and is in clearance fit with the second annular groove.
In some preferred embodiments, the second guard further comprises a third annular groove on the outer side surface of the gas homogenizing groove, the third annular groove is arranged at intervals from the gas homogenizing groove, the first guard is provided with a third annular protrusion, the third annular protrusion is inserted into the third annular groove, and a fit gap between the third annular protrusion and the third annular groove forms a third airtight gap communicated with the gas homogenizing groove.
In some preferred embodiments, the third airtight gap is provided with a seal at the end opposite the gas equalization tank, the seal being located between the first guard and the second guard.
In some preferred embodiments, the sealing element is an oil seal, a fixed table is arranged on the second protection element, the oil seal is fixed on the fixed table, and the oil seal is abutted with the outer side wall of the first protection element.
In some preferred embodiments, a first seal ring is disposed between the first guard and the trailing end of the mandrel, and a second seal ring is disposed between the outer sidewall of the second guard and the tailboard.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, the torque motor is installed by forming the assembly cavity between the tail end of the mandrel and the shell, and the orthographic projection of the motor rotor on the longitudinal section is arranged at the tail end of the mandrel, so that the torque motor can not increase the axial height of the mandrel, the turntable has a compact structure, the end jump error of the turntable relative to the torque motor can be reduced, and the overturning rigidity and the rotating accuracy of the turntable can be improved.
2. The invention further optimizes the structure of the tail end protection component, and a first airtight gap and a second airtight gap which are not positioned in the same plane are respectively formed on at least two adjacent side surfaces of the first protection component and the second protection component, so that the requirements that sundries such as processing liquid and scraps generated by processing enter the turntable in the use process of the turntable in various complex processing environments can be met, the torque motor can be protected from being damaged, the sundries can be prevented from entering the turntable to interfere the rotation of the mandrel, and the rotation precision, the working stability and the service life of the turntable can be further improved.
Drawings
Fig. 1 is a schematic perspective view of a motor direct-drive turntable.
Fig. 2 is an exploded view of the motor direct-drive turntable.
Fig. 3 is a schematic perspective view of a mandrel and turntable fixedly assembled.
Fig. 4 is a schematic diagram of an assembly structure of the tail end protection assembly of the motor direct-drive turntable relative to the tail plate.
Fig. 5 is a schematic perspective view of the first guard.
Fig. 6 is a schematic cross-sectional structure of the motor direct-drive turntable.
Fig. 7 is a partial enlarged view at a in fig. 6.
Detailed Description
In order to further describe the technical means and effects adopted by the present application for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present application with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
Referring to fig. 1-7, the invention discloses a motor direct-drive turntable (referred to as a turntable) which comprises a shell 1, a mandrel 2 rotatably arranged in the shell 1 through a bearing 3, a turntable 4 fixed at the head end and the tail end of the mandrel 2, a tail plate 5 and a tail end protection assembly, wherein the tail end of the mandrel 2 is pivotally connected with the tail plate 5, and the tail end protection assembly is assembled on the tail plate 5 to seal an assembly gap between the tail end of the mandrel 2 and the tail plate 5. The turntable 4 is used for loading a workpiece to be processed, and drives the workpiece to rotate as required when being matched with a numerical control machine tool for processing, and the workpiece is accurately sent to a processing position and is positioned and fixed.
A torque motor for driving the mandrel 2 is arranged in the shell 1, the torque motor comprises a motor stator 81 fixed in the shell 1 and a motor rotor 82 fixedly connected with the mandrel 2, and the motor rotor 82, the motor stator 81 and the mandrel 2 are coaxially arranged. The motor stator 81 drives the motor rotor 82 to drive the mandrel 2 to rotate as required.
As shown in fig. 3, the outer diameter of the head end of the mandrel 2 is set to be larger than the outer diameter of the tail end of the mandrel 2. The rotary inertia of the mandrel 2 can be reduced, the positioning stop control of the turntable is more accurate, and the rotary precision of the turntable is improved, meanwhile, the outer diameter of the head end and the tail end of the mandrel 2 is larger, so that errors generated in the rotary process of the turntable can be reduced when the mandrel is fixedly assembled with the turntable with larger radial size, and the rotary precision of the turntable is further improved.
Meanwhile, the outer diameter of the tail end of the mandrel 2 is smaller, a containing cavity is formed between the shell 1 and the tail end of the mandrel 2, and the torque motor is arranged in the containing cavity. Therefore, the accommodating cavity not only provides an assembling space of the torque motor, but also facilitates improving the heat dissipation performance of the electromagnetic coil in the motor stator 81 and ensuring the working stability of the torque motor.
Specifically, the motor mover 82 is fixed to the rear end of the spindle 2, the orthographic projection of the motor mover 82 on a longitudinal section passing through the central axis of the spindle 2 is located at the rear end of the spindle 2 so that the rear end position of the motor mover 82 does not protrude beyond the rear end of the spindle 2, the rear end of the motor stator 81 is fixed to the tailboard 5, and the motor stator 81 is located on the outer peripheral side of the motor mover 82.
The structure at least has the following technical effects that firstly, the torque motor is arranged close to the tail end of the rotary table, but the tail end position of the motor rotor 82 does not extend out of the tail end of the mandrel 2, so that the torque motor does not increase the axial height of the rotary table, the rotary error of the rotary table is reduced, the overturning prevention rigidity of the rotary table is improved, and secondly, the motor stator 81 is fixed on the tail plate 5, when the tail plate 5 is detached, the motor stator 81 can be taken out together, the space of the accommodating cavity after the motor stator 81 is taken out is larger, the motor rotor 82 is exposed conveniently, and accordingly the torque motor is overhauled and maintained conveniently.
A first step 21 is provided near the leading end of the mandrel 2 and a second step 22 is provided near the trailing end of the mandrel 2, so that the outer diameter of the first step 21 is greater than the outer diameter of the second step 22. The bearing 3 is assembled on the first step portion 21 near the first end of the spindle 2, and the radial portion of the motor mover 82 is fixed on the second step portion 22 of the spindle 2, thereby facilitating the assembly and fixation.
The invention also seals the assembly gap between the tail end of the mandrel 2 and the tail plate 5 by assembling the tail end protection assembly on the tail plate 5. Through optimizing tail end protection component's structure, can satisfy the use of revolving stage under various complicated processing environment and prevent debris scheduling debris entering the revolving stage that processing liquid, processing produced in, can protect torque motor not fragile, also can prevent debris entering the inside interference dabber 2 rotation of revolving stage to can improve revolving stage's rotation precision, job stabilization nature and life.
Specifically, the trailing shield assembly includes a first shield 6 and a second shield 7. The first guard 6 is fixedly connected to the tail end of the spindle 2 such that the first guard 6 rotates as required with the spindle 2. The tail plate 5 is provided with a mounting hole 51, the tail end of the mandrel 2 passes through the mounting hole 51, the second guard 7 is fixedly assembled with the tail plate 5 to encapsulate the first guard 6 in the mounting hole 51, the second guard is provided with a gas homogenizing groove 72 connected with a gas pipe 79, and a gas-tight gap is formed at least by clearance fit between two adjacent side surfaces of the second guard 7 and corresponding side surfaces of the first guard 6.
The first protector 6 includes a protective disk 61 fixedly connected to the spindle 2 and a central cylinder 62 extending from the protective disk 61, and the second protector 7 has a through hole 71, and the central cylinder 62 is inserted into the through hole 71.
The airtight gap formed between the second prevention piece 7 and the first prevention piece 6 includes a first airtight gap formed between the second prevention piece 7 and the opposite side face of the prevention disc 61 in communication with the air distribution groove 72, and a second airtight gap formed between the outer side wall of the center cylinder 62 and the inner side wall of the through hole 71 in communication with the first airtight gap.
The second airtight gap and the first airtight gap are not located in the same plane, so that the airtight gap formed by the clearance fit between the first protection piece 6 and the second protection piece 7 is not planar, which is beneficial to improving the sealing protection performance of the airtight gap.
For example, in the embodiment shown in the drawings, the first airtight gap is distributed in a radial plane, and the second airtight gap is distributed in an axial cylindrical plane.
After the gas pipe 79 injects the shielding gas into the gas homogenizing groove 72, the shielding gas fills the gas homogenizing groove 72, and then enters the first airtight gap from the gas homogenizing groove 72 and is discharged from the second airtight gap of the first airtight gap, so that the fit gap between the first shielding piece 6 and the second shielding piece 7 forms gas curtain seal, and the processing liquid and the processing chips are prevented from entering the turntable through the gap.
In some preferred embodiments, the outer side wall of the central cylinder 62 or/and the inner side wall of the through-hole 71 is provided with a plurality of first annular grooves 621, each of the first annular grooves 621 being disposed to slope toward the trailing end direction of the central cylinder 62 from the groove bottom to the groove wall of the groove opening.
After the shielding gas enters the second airtight gaps, when the shielding gas flows through each first annular groove 621, the inclined arrangement of the groove walls of each first annular groove 621 can cause the local acceleration of the gas flow to form eddies, so that a gas curtain with a plurality of gas flow eddies is formed in the second airtight gaps, and the sealing performance of the gas curtain of the second airtight gaps is improved.
The first annular grooves 621 are preferably provided on the outer side wall of the central cylinder 62, so that the first guard 6 rotates with the mandrel 2 to generate centrifugal force on the airflow, and airflow vortex is more easily formed under the cooperation of the inclined groove wall guide. The sealing disk 63 is provided at the tail end of the central cylinder 62, the sealing disk 63 and the central cylinder 62 are assembled or integrally formed, and the outer diameter of the sealing disk 63 is larger than the outer diameter of the central cylinder 62. Wherein the mating gap between the sealing disc 63 and the second shielding member 7 forms part of a second airtight gap. The direction of the air flow in the second airtight gap can be further changed by the fit gap between the sealing disk 63 and the second prevention piece 7 to enhance the airtight effect.
The fit gap between the sealing disk 63 and the second prevention piece 7 forms a first labyrinth seal structure with which the airtight performance of the second seal gap is improved. Specifically, the sealing disc 63 is provided with a second annular protrusion 631, the inner side wall of the through hole 71 is correspondingly provided with a second annular groove 711, and the second annular protrusion is inserted into the second annular groove and is in clearance fit with the second annular protrusion.
Meanwhile, as the sealing disc 63 rotates along with the mandrel 2, centrifugal force generated by rotation throws out sundries such as processing liquid entering from the tail end of the first labyrinth airtight structure, the sundries such as the processing liquid are difficult to enter the second airtight gap, and the airtight protection performance of the turntable is further improved.
A second labyrinth seal structure is further provided between the first protector 6 and the second protector 7, and is located on the outer peripheral side of the gas distribution groove 72, and a second seal gap is mainly constituted by the second labyrinth seal structure. Specifically, the second protection piece 7 further comprises a third annular groove 73 positioned on the outer side surface of the air homogenizing groove 72, the third annular groove 73 and the air homogenizing groove 72 are arranged at intervals, the first protection piece 6 is provided with a third annular protrusion 64, the third annular protrusion 64 is inserted into the third annular groove 73, and a fit gap between the third annular protrusion and the air homogenizing groove forms a third airtight gap communicated with the air homogenizing groove.
In order to further improve the sealing protection effect on the end of the turntable tail, the end of the third airtight gap opposite to the air homogenizing groove 72 is provided with a sealing member 91. The seal 91 is located between the first guard 6 and the second guard 7.
For example, the sealing member 91 is an oil seal, a fixing table is provided on the second protecting member 7, the oil seal is fixed on the fixing table, and the oil seal abuts against the outer side wall of the first protecting member 6 to maintain a reliable sealing connection relationship.
In order to further improve the sealing and protecting effect on the tail end of the turntable, a first sealing ring 92 is arranged between the first protection piece 6 and the tail end of the mandrel 2, an assembling gap between the first protection piece 6 and the tail end of the mandrel 2 is sealed by the first sealing ring 92, a second sealing ring 93 is arranged between the outer side wall of the second protection piece 7 and the tail plate 5, and the assembling gap between the outer side wall of the second protection piece 7 and the tail plate 5 is sealed by the second sealing ring 93.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (10)
1. The motor direct-drive turntable comprises a shell (1), a mandrel (2), a bearing (3), a turntable (4), a tail plate (5) with a mounting hole (51) and a torque motor for driving the mandrel (2), wherein the mandrel (2) is arranged in the shell (1) through the bearing (3), the head end and the tail end of the mandrel (2) are fixedly connected with the turntable (4), and the tail end of the mandrel (2) is arranged through the mounting hole (51), and is characterized in that:
the outer diameter of the head end and the tail end of the mandrel (2) is larger than that of the tail end of the mandrel (2), and a containing cavity is formed between the tail end of the mandrel (2) and the shell (1);
The torque motor is arranged in the accommodating cavity, a motor rotor (82) of the torque motor is fixed at the tail end of the mandrel (2), the orthographic projection of the motor rotor (82) on the longitudinal section of the mandrel (2) is positioned at the tail end of the mandrel (2), and a motor stator (81) and the motor rotor (82) of the torque motor are both coaxially arranged with the mandrel (2);
the tail end protection assembly comprises a first protection piece (6) positioned in the mounting hole (51) and a second protection piece (7) fixedly assembled with the tail plate (5) so as to encapsulate the first protection piece (6) in the mounting hole (51);
The first protection piece (6) comprises a protection disc body (61) fixedly connected with the mandrel and a central cylinder body (62) extending from the protection disc body (61);
the second guard (7) is provided with a through hole (71) and a gas homogenizing groove (72) connected with a gas pipe (79), and the central cylinder (62) is inserted into the through hole (71);
A first airtight gap communicated with the air homogenizing groove (72) is formed between the second protection piece (7) and the opposite side face of the protection disc body (61), a second airtight gap communicated with the first airtight gap is formed between the outer side wall of the central cylinder body (62) and the inner side wall of the through hole (71), and the second airtight gap and the first airtight gap are not located in the same plane.
2. The motor direct-drive turntable according to claim 1, wherein a first step portion (21) is provided near the head end of the spindle (2), a second step portion (22) is provided near the tail end of the spindle (2), the bearing (3) is assembled on the first step portion (21), and the radial portion of the motor mover (82) is fixed on the second step portion (22).
3. Motor direct drive turntable according to claim 1, characterized in that the motor stator (81) is fixed on the end plate (5), and that the motor stator (81) is located on the outer peripheral side of the motor mover (82).
4. A motor direct drive turntable according to claim 1, characterized in that the outer side wall of the central cylinder (62) or/and the inner side wall of the through hole (71) is provided with a plurality of first annular grooves (621), each first annular groove (621) being arranged from the groove bottom to the groove wall of the groove opening to incline towards the tail end direction of the central cylinder (62) so that an air curtain with a plurality of air flow swirls is formed when the air flow passes through the second airtight gap.
5. The motor direct-drive turntable according to claim 1, wherein the tail end of the central cylinder (62) is provided with a sealing disc (63), the outer diameter of the sealing disc (63) is larger than that of the central cylinder (62), and a fit gap between the sealing disc (63) and the second protection piece (7) forms a first labyrinth airtight structure positioned in the second airtight gap.
6. The motor direct-drive turntable according to claim 5, wherein the first labyrinth seal comprises a second annular protrusion (631) provided on the seal disk (63), a second annular groove (711) provided on an inner side wall of the through hole (71), and the second annular protrusion (631) is inserted into the second annular groove (711) and is in clearance fit with the second annular groove.
7. The motor direct-drive turntable according to claim 1, wherein the second protection piece (7) further comprises a third annular groove (73) positioned on the outer side surface of the air homogenizing groove (72), the third annular groove (73) and the air homogenizing groove (72) are arranged at intervals, the first protection piece (6) is provided with a third annular bulge (64), the third annular bulge (64) is inserted into the third annular groove (73), and a matching gap between the third annular bulge and the air homogenizing groove forms a third airtight gap communicated with the air homogenizing groove.
8. The motor direct-drive turntable according to claim 7, wherein a sealing member (91) is provided at an end of the third airtight gap opposite to the air distribution groove (72), and the sealing member (91) is located between the first protection member (6) and the second protection member (7).
9. The direct-drive turntable of the motor according to claim 8, wherein the sealing member (91) is an oil seal, a fixed table is arranged on the second protecting member (7), the oil seal is fixed on the fixed table, and the oil seal is abutted against the outer side wall of the first protecting member (6).
10. A motor direct drive turntable according to any one of claims 1-9, characterized in that a first sealing ring (92) is arranged between the first protection member (6) and the tail end of the spindle (2), and a second sealing ring (93) is arranged between the outer side wall of the second protection member (7) and the tail plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411736181.4A CN119217081B (en) | 2024-11-29 | 2024-11-29 | Motor direct-drive turntable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411736181.4A CN119217081B (en) | 2024-11-29 | 2024-11-29 | Motor direct-drive turntable |
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| Publication Number | Publication Date |
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| CN119217081A CN119217081A (en) | 2024-12-31 |
| CN119217081B true CN119217081B (en) | 2025-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202411736181.4A Active CN119217081B (en) | 2024-11-29 | 2024-11-29 | Motor direct-drive turntable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101480778A (en) * | 2009-01-24 | 2009-07-15 | 苏州江南电梯(集团)有限公司 | Direct driving type accurate turn plate |
| CN105690110A (en) * | 2016-04-21 | 2016-06-22 | 江苏宏达数控科技股份有限公司 | Numerical control direct drive rotating platform |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201792207U (en) * | 2010-09-15 | 2011-04-13 | 株洲卓越高科技实业有限公司 | Rotating table |
| CN102501226B (en) * | 2011-10-31 | 2014-02-19 | 西安理工大学 | A precision rotary device for deformed guide rails driven by macro and micro |
| CN217935224U (en) * | 2022-07-22 | 2022-11-29 | 威海广宇大成数控机床有限公司 | Numerical control built-in motor arbitrarily indexing turntable |
-
2024
- 2024-11-29 CN CN202411736181.4A patent/CN119217081B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480778A (en) * | 2009-01-24 | 2009-07-15 | 苏州江南电梯(集团)有限公司 | Direct driving type accurate turn plate |
| CN105690110A (en) * | 2016-04-21 | 2016-06-22 | 江苏宏达数控科技股份有限公司 | Numerical control direct drive rotating platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119217081A (en) | 2024-12-31 |
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