CN115319484A - Rotary workbench capable of realizing quick replacement of workpieces - Google Patents
Rotary workbench capable of realizing quick replacement of workpieces Download PDFInfo
- Publication number
- CN115319484A CN115319484A CN202210889727.4A CN202210889727A CN115319484A CN 115319484 A CN115319484 A CN 115319484A CN 202210889727 A CN202210889727 A CN 202210889727A CN 115319484 A CN115319484 A CN 115319484A
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- China
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- worktable
- workbench
- rotor shaft
- centering
- shaft
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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
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
Abstract
The invention discloses a rotary workbench capable of realizing quick replacement of workpieces, which comprises a workbench, a workbench driving mechanism, a workbench unclamping mechanism and a detection gas circuit, wherein the workbench is arranged on the upper side of a workbench base through a turntable bearing; the worktable driving mechanism comprises two motors, two speed reducers, two pinions and a gear wheel, wherein the two speed reducers are symmetrically arranged on two sides of a worktable base, the lower end of each speed reducer is connected with the output end of one motor, the upper end of each speed reducer is coaxially and fixedly connected with one pinion, the two pinions are respectively meshed with the gear wheel, the gear wheel is arranged at the bottom of the worktable, a centering transmission mechanism is arranged in the worktable, the upper end of the centering transmission mechanism is connected with a workpiece zero point quick-change device, and a detection gas circuit is arranged in the centering transmission mechanism. The rotary workbench can realize the rotation of the workbench by n multiplied by 360 degrees, and the displacement angle of the workbench can be accurately positioned, so that the accurate positioning of the workbench is ensured.
Description
Technical Field
The invention relates to a workbench structure of a numerical control machine tool, in particular to a rotary workbench capable of realizing quick replacement of workpieces.
Background
Due to the size limitation of the swinging head and the main shaft, the general five-axis gantry machining center has strict technological requirements on the clamping of the deep-cavity cylindrical part, and the clamping can be completed only by consuming a large amount of labor cost each time, so that the machining efficiency of the part is not ideal, and the productivity is low. How to improve the processing efficiency of the deep-cavity cylindrical parts is a problem to be solved urgently at present. The invention is designed for improving the clamping of the deep-cavity cylindrical part, can realize the quick clamping of the part and improve the production efficiency.
Disclosure of Invention
The invention aims to solve the technical problem that the rotary workbench capable of realizing quick replacement of workpieces is provided aiming at the defects of the prior art, the rotation of the workbench can be realized by n multiplied by 360 degrees, the displacement angle of the workbench can be accurately positioned, and the accurate positioning of the workbench can be ensured.
The technical scheme adopted by the invention for solving the technical problems is as follows: a rotary worktable capable of realizing quick replacement of workpieces comprises a worktable, a worktable driving mechanism, a worktable loose clamping mechanism and a detection gas circuit, wherein the worktable is arranged on the upper side of a worktable base through a turntable bearing, and an absolute steel grid is arranged on the turntable bearing in a matched manner; workstation actuating mechanism include two motors, two reduction gears, two pinions and a gear wheel, two reduction gear symmetries install the both sides of workstation base, every the lower extreme of reduction gear and one the output of motor connect, every the upper end of reduction gear and one the coaxial fixed connection of pinion, two pinions respectively with gear engagement, the gear wheel install the bottom of workstation, workstation loose clamp mechanism be used for pressing from both sides tightly or loosen the workstation, the workstation in install centering drive mechanism, centering drive mechanism install in workstation base, centering drive mechanism's upper end and work piece quick change zero point device be connected, the setting of detection gas circuit be in centering drive mechanism in.
The rotary workbench is designed for realizing quick replacement of workpieces, can be matched with a workpiece zero quick-replacement device for use, can replace a common horizontal and rotary workbench and be applied to a horizontal machining center, can be applied to a gantry machining center, and has strong universality.
The rotary worktable is connected with the worktable base through the turntable bearing and is driven by the worktable driving mechanism to realize the rotation of the worktable. The absolute formula steel bars of revolving stage bearing cooperation, the space occupies for a short time, can realize workstation nx360 rotatory to the accurate location of workstation is guaranteed to the displacement angle of accurate positioning table, and need not to carry out the operation of returning to zero.
The rotary motion of the rotary worktable of the invention with n multiplied by 360 degrees is realized by two motors through two speed reducers to realize double-gear anti-backlash transmission, thereby ensuring the stability of the operation of the worktable.
Preferably, the inner ring of the turntable bearing is mounted on a bearing seat, the outer ring of the turntable bearing is fixed on the workbench base, and the workbench is fixed on the bearing seat.
Furthermore, the workbench unclamping mechanism comprises an oil cylinder seat, an oil cylinder, an upper friction plate and a lower friction plate, the oil cylinder is arranged on the inner side of the bearing seat, the oil cylinder seat is arranged on the inner side of the oil cylinder, the oil cylinder seat and the oil cylinder are enclosed to form an annular unclamping oil cavity and an annular clamping oil cavity, a first oil inlet and a second oil inlet are formed in the workbench base, the first oil inlet is communicated with the unclamping oil cavity, the second oil inlet is communicated with the clamping oil cavity, the first oil inlet and the second oil inlet are respectively communicated with a machine tool oil supply system, the upper friction plate is fixed at the bottom of the oil cylinder, one end of the lower friction plate is fixed on the bearing seat, the other end of the lower friction plate is positioned below the upper friction plate, and the bottom of the lower friction plate is opposite to the workbench base. The clamping releasing mechanism of the workbench adopts a hydraulic releasing and clamping mode, and the clamping releasing is reliable. When a machine tool oil supply system leads hydraulic oil into the loosening oil cavity from the first oil inlet, the oil cylinder floats upwards to realize the loosening of the workbench; when the machine tool oil supply system leads hydraulic oil into the clamping oil cavity from the second oil inlet, the oil cylinder is pressed downwards, so that the upper friction plate and the lower friction plate are tightly attached to each other, and the clamping of the workbench is realized.
Preferably, the detection gas circuit comprises multiple first gas circuits, the centering transmission mechanism comprises a centering shaft, a rotor shaft, a stator shaft and a transition disc, the rotor shaft is sleeved outside the stator shaft, the bottom of the stator shaft is connected with the centering shaft, the centering shaft is fixed on the base of the workbench, the transition disc is fixed at the upper end of the rotor shaft, the rotor shaft is fixed on the workbench, the rotor shaft is connected with the workpiece zero point quick-change device through the transition disc, the multiple first gas circuits respectively penetrate through the axial direction of the centering shaft, the bottom of the centering shaft is provided with multiple pluggable gas pipe connectors which are in one-to-one correspondence with the multiple first gas circuits, the pluggable gas pipe connectors are respectively connected with pipelines of a machine tool pneumatic system, the stator shaft is internally provided with multiple second gas circuits which are communicated with the multiple first gas circuits one-to-one, the rotor shaft is internally provided with multiple third gas circuits which are communicated with the multiple second gas circuits one-to-one, and the transition disc is internally provided with fourth gas circuits which are communicated with the multiple first gas circuits one-to-one. The pluggable air pipe connectors are convenient for realizing quick connection of the first air pipes and the pipelines of the pneumatic system of the machine tool, and convenient to maintain and inspect.
The detection gas circuit comprises five first gas circuits, wherein the two first gas circuits respectively correspond to workpiece loosening and loosening detection of the workpiece zero point quick-change device, the two first gas circuits respectively correspond to workpiece clamping and clamping detection of the workpiece zero point quick-change device, and the one first gas circuit corresponds to airtightness detection of whether the workpiece is in place. The five first air paths can realize various detection functions of the workpiece zero point quick-change device.
Furthermore, a first sealing ring is arranged at the joint of each path of the first air path and each path of the second air path, a rotary sealing ring is arranged at the joint of each path of the second air path and each path of the third air path, a second sealing ring is arranged between the rotor shaft and the contact surface of the workbench, and a third sealing ring is arranged between the transition disc and the contact surface of the rotor shaft. Sealing rings are arranged between different air paths and contact surfaces, so that the sealing performance and the water resistance of the workbench in the operation process can be ensured, and cutting chips, cutting fluid and other impurities in the workpiece processing process are prevented from entering the machine tool.
Further, the upper end of rotor shaft be equipped with the recess, the transition dish install the recess in, the transition dish with the upper end terminal surface of rotor shaft respectively with the top surface parallel and level of workstation.
Compared with the prior art, the invention has the following advantages:
1. the rotary workbench can realize n × 360-degree rotation of the workbench, accurately positions the displacement angle of the workbench, ensures accurate positioning of the workbench, does not need zero returning operation, realizes n × 360-degree rotation of the workbench by two motors through two speed reducers to realize double-gear backlash transmission, and can ensure the running stability of the workbench;
2. the rotary workbench can be matched with a workpiece zero point quick-changing device for use, so that the workpiece is quickly changed, and the production efficiency of a machine tool is improved;
3. the rotary worktable can replace a common horizontal and rotary worktable and is applied to a horizontal machining center, can be applied to a gantry machining center and has strong universality.
Drawings
FIG. 1 is an exploded view of a rotary table in an embodiment;
FIG. 2 is a bottom view of the rotary table in the embodiment;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is an enlarged view of FIG. 4 at D;
FIG. 6 is a cross-sectional view taken at C-C of FIG. 2;
FIG. 7 is an enlarged view at E of FIG. 6;
FIG. 8 is a schematic view showing the assembly of the table driving mechanism in the embodiment;
fig. 9 is a schematic structural diagram of a centering transmission mechanism in the embodiment.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The rotary worktable capable of realizing quick replacement of workpieces comprises a worktable 1, a worktable driving mechanism, a worktable loose clamping mechanism and a detection gas circuit, wherein the worktable 1 is installed on the upper side of a worktable base 13 through a turntable bearing 11, an absolute steel fence (not shown in the figure) is installed on the turntable bearing 11 in a matching manner, an inner ring of the turntable bearing 11 is installed on a bearing seat 12, an outer ring of the turntable bearing 11 is fixed on the worktable base 13, the worktable 1 is fixed on the bearing seat 12, and the turntable bearing 11 and the absolute steel fence which are matched with the turntable bearing 11 in the embodiment adopt the prior art. The worktable driving mechanism comprises two motors 21, two speed reducers 22, two pinions 23 and a gearwheel 24, the two speed reducers 22 are symmetrically arranged on two sides of a worktable base 13, the lower end of each speed reducer 22 is connected with the output end of one motor 21, the upper end of each speed reducer 22 is fixedly connected with one pinion 23 in a coaxial mode, the two pinions 23 are respectively meshed with the gearwheel 24, the gearwheel 24 is arranged at the bottom of the worktable 1, the worktable unclamping mechanism is used for clamping or loosening the worktable 1, a centering transmission mechanism is arranged in the worktable 1 and is arranged on the worktable base 13, the upper end of the centering transmission mechanism is connected with a workpiece zero point quick-change device 3, and a detection gas circuit is arranged in the centering transmission mechanism.
In this embodiment, the worktable unclamping mechanism comprises an oil cylinder seat 41, an oil cylinder 42, an upper friction plate 43 and a lower friction plate 44, the oil cylinder 42 is arranged on the inner side of the bearing seat 12, the oil cylinder seat 41 is arranged on the inner side of the oil cylinder 42, the oil cylinder seat 41 and the oil cylinder 42 enclose an annular unclamping oil cavity 45 and an annular clamping oil cavity 46, a first oil inlet 14 and a second oil inlet 15 are formed in the worktable base 13, the first oil inlet 14 is communicated with the unclamping oil cavity 45, the second oil inlet 15 is communicated with the clamping oil cavity 46, the first oil inlet 14 and the second oil inlet 15 are respectively communicated with a machine tool oil supply system (not shown), the upper friction plate 43 is fixed at the bottom of the oil cylinder 42, one end of the lower friction plate 44 is fixed on the bearing seat 12, the other end of the lower friction plate 44 is located below the upper friction plate 43, and the bottom of the lower friction plate 44 is opposite to the worktable base 13.
In this embodiment, the detection gas circuit includes five first gas circuits 61, the centering transmission mechanism includes a centering shaft 51, a rotor shaft 52, a stator shaft 53 and a transition disc 54, the rotor shaft 52 is sleeved outside the stator shaft 53, the bottom of the stator shaft 53 is connected with the centering shaft 51, the centering shaft 51 is fixed on the table base 13, the transition disc 54 is fixed on the upper end of the rotor shaft 52, specifically, a groove 55 is formed at the upper end of the rotor shaft 52, the transition disc 54 is installed in the groove 55, the upper end faces of the transition disc 54 and the rotor shaft 52 are respectively flush with the top surface of the table 1, the rotor shaft 52 is fixed on the table 1, the rotor shaft 52 is connected with the zero-point quick-change device 3 of the workpiece through the transition disc 54, the five first gas circuits 61 are respectively axially arranged through the centering shaft 51, five pluggable gas pipe joints 6 corresponding to the five first gas circuits 61 are installed at the bottom of the centering shaft 51, the five pluggable gas pipe joints 6 are respectively connected with the pipelines of the pneumatic system (not shown in the figure), the stator shaft 53 is provided with fifth second gas circuits 62 communicated with the fifth first gas circuits 61 one by one to one, the fifth gas circuits 63, and the fourth gas circuits 64 are provided in the fifth gas circuits 63. The two first gas paths 61 correspond to workpiece loosening and loosening detection of the workpiece zero-point quick-change device 3, the two first gas paths 61 correspond to workpiece clamping and clamping detection of the workpiece zero-point quick-change device 3, and the one first gas path 61 corresponds to airtightness detection of whether the workpiece is in place.
In this embodiment, a first sealing ring 71 is disposed at the joint of each first air path 61 and each second air path 62, a rotary sealing ring 74 is disposed at the joint of each second air path 62 and each third air path 63, a second sealing ring 72 is disposed between the contact surfaces of the rotor shaft 52 and the worktable 1, and a third sealing ring 73 is disposed between the contact surfaces of the transition disc 54 and the rotor shaft 52.
The two motors 21 drive the two pinions 23 to rotate through the two speed reducers 22, and the two pinions 23 drive the large gear 24 to rotate, so that double-gear backlash transmission is realized, the workbench 1 is driven to rotate, and the running stability of the workbench 1 is ensured. In the operation process of the workbench 1, the workbench 1 can be accurately positioned through the turntable bearing 11, the workbench 1 can continuously rotate by n multiplied by 360 degrees, and the processing efficiency is improved.
Claims (7)
1. A rotary worktable capable of realizing quick replacement of workpieces is characterized by comprising a worktable, a worktable driving mechanism, a worktable loose clamping mechanism and a detection gas circuit, wherein the worktable is arranged on the upper side of a worktable base through a turntable bearing; workstation actuating mechanism include two motors, two reduction gears, two pinions and a gear wheel, two reduction gear symmetry install the workstation base the both sides, every the lower extreme of reduction gear and one the output of motor connect, every the upper end of reduction gear and one the coaxial fixed connection of pinion, two pinions respectively with gear wheel engagement, the gear wheel install the bottom of workstation, workstation loose clamp mechanism be used for pressing from both sides tightly or loosen the workstation, the workstation in install centering drive mechanism, centering drive mechanism install in the workstation base, centering drive mechanism's upper end and work piece quick change device be connected at zero point, the setting of detection gas circuit be in centering drive mechanism in.
2. A rotary table capable of realizing rapid replacement of workpieces according to claim 1, wherein the inner ring of the turntable bearing is mounted on a bearing seat, the outer ring of the turntable bearing is fixed on the table base, and the table is fixed on the bearing seat.
3. The rotary worktable capable of realizing the rapid replacement of workpieces as claimed in claim 2, wherein the worktable unclamping mechanism comprises an oil cylinder seat, an oil cylinder, an upper friction plate and a lower friction plate, the oil cylinder is arranged on the inner side of the bearing seat, the oil cylinder seat is arranged on the inner side of the oil cylinder, the oil cylinder seat and the oil cylinder are enclosed to form an annular unclamping oil cavity and an annular clamping oil cavity, a first oil inlet and a second oil inlet are formed in the worktable base, the first oil inlet is communicated with the unclamping oil cavity, the second oil inlet is communicated with the clamping oil cavity, the first oil inlet and the second oil inlet are respectively communicated with a machine tool oil supply system, the upper friction plate is fixed at the bottom of the oil cylinder, one end of the lower friction plate is fixed on the bearing seat, the other end of the lower friction plate is located below the upper friction plate, and the bottom of the lower friction plate is opposite to the worktable base.
4. The rotary worktable capable of realizing rapid replacement of workpieces as claimed in claim 1, wherein the detection gas circuit comprises multiple first gas circuits, the centering transmission mechanism comprises a centering shaft, a rotor shaft, a stator shaft and a transition disc, the rotor shaft is sleeved outside the stator shaft, the bottom of the stator shaft is connected with the centering shaft, the centering shaft is fixed on the worktable base, the transition disc is fixed on the upper end of the rotor shaft, the rotor shaft is fixed on the worktable, the rotor shaft is connected with the workpiece zero point quick-change device through the transition disc, the multiple first gas circuits respectively penetrate through the axial direction of the centering shaft, the bottom of the centering shaft is provided with a plurality of pluggable gas pipe joints in one-to-one correspondence with the multiple first gas circuits, the pluggable gas pipe joints are respectively connected with the pipelines of the machine tool pneumatic system, the stator shaft is provided with multiple second gas circuits in one-to-one communication with the multiple first gas circuits, the rotor shaft is provided with a plurality of pluggable gas pipe joints in one-to-one correspondence with the multiple first gas circuits, and the rotor shaft is provided with a plurality of third gas circuits in one-to-one communication with the fourth gas circuits.
5. The rotary worktable capable of realizing rapid workpiece replacement according to claim 4, wherein the detection gas circuit comprises five first gas circuits, wherein two first gas circuits respectively correspond to workpiece loosening and loosening detection of the workpiece zero point rapid-replacement device, two first gas circuits respectively correspond to workpiece clamping and clamping detection of the workpiece zero point rapid-replacement device, and one first gas circuit corresponds to airtight detection of whether a workpiece is in place.
6. A rotary table capable of achieving rapid workpiece replacement as claimed in claim 4, wherein a first seal ring is provided at the junction of each first air passage and each second air passage, a rotary seal ring is provided at the junction of each second air passage and each third air passage, a second seal ring is provided between the contact surfaces of the rotor shaft and the table, and a third seal ring is provided between the contact surfaces of the transition disc and the rotor shaft.
7. A rotary worktable capable of realizing rapid workpiece replacement according to claim 4, wherein the upper end of the rotor shaft is provided with a groove, the transition disc is arranged in the groove, and the upper end surfaces of the transition disc and the rotor shaft are respectively flush with the top surface of the worktable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210889727.4A CN115319484A (en) | 2022-07-27 | 2022-07-27 | Rotary workbench capable of realizing quick replacement of workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210889727.4A CN115319484A (en) | 2022-07-27 | 2022-07-27 | Rotary workbench capable of realizing quick replacement of workpieces |
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| Publication Number | Publication Date |
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| CN115319484A true CN115319484A (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210889727.4A Pending CN115319484A (en) | 2022-07-27 | 2022-07-27 | Rotary workbench capable of realizing quick replacement of workpieces |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115780849A (en) * | 2022-12-05 | 2023-03-14 | 武汉重型机床集团有限公司 | Workpiece alignment device and method for exchangeable self-centering chuck |
-
2022
- 2022-07-27 CN CN202210889727.4A patent/CN115319484A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115780849A (en) * | 2022-12-05 | 2023-03-14 | 武汉重型机床集团有限公司 | Workpiece alignment device and method for exchangeable self-centering chuck |
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