CN214080933U

CN214080933U - Water jet cutter 3D cutting mechanical seal servo rotary worktable

Info

Publication number: CN214080933U
Application number: CN202023226463.XU
Authority: CN
Inventors: 陈平; 马雅茹
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-08-31
Anticipated expiration: 2030-12-28

Abstract

The utility model belongs to the technical field of mechanical seal rotary working tables, and relates to a water jet cutter 3D cutting mechanical seal servo rotary working table, which comprises a supporting base fixed at the bottom of a water tank, wherein a driving part is arranged on the supporting base, and a bearing seat is fixed at the upper end of the supporting base; the bearing seat is provided with a thrust self-aligning roller bearing, the upper end face of the bearing seat is fixed with a first gland, the first gland is provided with a first self-aligning roller bearing, the upper end face of the first gland is provided with a second gland, the rotating shaft is in running fit with the thrust self-aligning roller bearing and the first self-aligning roller bearing, the lower end of the rotating shaft is connected with the output end of the driving part, and the upper end of the rotating shaft is fixed with a workpiece mounting table; the lower step of the first gland is fixedly connected with a protective cover, the lower end of the protective cover is fixedly connected with the bottom of the water tank, and the bearing seat and the support base are arranged in the inner cavity of the protective cover. The rotary worktable has a good sealing effect and can be effectively used for 3D forming machining of aerospace turbine blisk parts.

Description

Water jet cutter 3D cutting mechanical seal servo rotary worktable

Technical Field

The utility model belongs to the technical field of mechanical seal swivel work head, a water sword 3D cutting mechanical seal servo swivel work head is related to.

Background

In the traditional abrasive water jet cutting process, a workpiece is generally fixed on a bracket of a water tank, and a water jet head cuts the workpiece under the control of a program, so that the current 3-axis and 5-axis water jet can only perform some simple space cutting, the water tank collects the mixture of water sand, metal powder and the like generated during the water jet cutting, and simultaneously, in order to absorb the noise generated during the water cutting, the water tank is required to be filled to the surface of the workpiece, so that a workpiece mounting table is completely submerged below the water surface. Because the water cutting is the penetration cutting, the residual cutting force after penetration can break down the water tank, so the water tank needs to have enough depth, and the residual cutting force of the water jet can not break down the water tank.

In order to realize the water jet 3D curved surface shaping cutting, just need develop servo swivel work head, let the work piece that is cut also participate in the space motion, form 3 dimension space curved surface shaping cutting effect, traditional numerical control swivel work head, rotatory part do not have waterproof sand control function, can't satisfy the abominable complicated operating mode of water sand and operational environment of water sword.

The existing numerical control rotary table cannot be effectively used for a water cutting machine tool and mainly has the following reasons:

1. the working environment is not matched: the working environment of the numerical control turntable is cutting fluid, metal scrap iron and the like; the water cutting environment is a mixture of sand, water, slurry, metal powder, etc.

2. The working modes are not matched: the numerical control rotary table is in a liquid spraying mode; water cutting is a liquid flooding pattern.

At present, an intelligent high-precision underwater servo rotary worktable has the following defects: firstly, the rotary seal is immersed in severe water sand slurry, and sand easily abrades the sealing surface, so that the sealing is failed; secondly, the swivel bearing arranges unreasonablely, and the bottom adopts thrust bearing, therefore automatic aligning function is relatively poor, and thirdly, rotation axis and bearing assembly do not have the safe leakage and excrete protect function, in case the above-mentioned sealed transient failure of taking place leaks, the sewage silt particle is piled up in rotation axis and bearing department easily, leads to rotation axis and bearing system to become invalid.

Disclosure of Invention

The utility model provides a water jet cutting machine 3D mechanical seal servo rotary worktable, aiming at the problems, the worktable adopts a reasonably arranged self-aligning bearing to support a rotary shaft and a worktable system, and ensures the position precision and the motion precision of the rotary worktable; the double sealing structure of mechanical rotary seal and labyrinth dustproof sealing ring is adopted, the water-sand mixture cut by the water jet cutter is blocked at the outer layer of the mechanical rotary seal, and the reliability and the service life of the mechanical rotary seal system are improved; meanwhile, in the rotating shaft and bearing system structure, the flow guide holes are formed, so that water and sediment are prevented from accumulating in the rotating shaft and bearing system structure, the reliability of the system is improved, and the service life of the system is prolonged.

According to the technical scheme of the utility model: the utility model provides a servo swivel work head of water sword 3D cutting mechanical seal which characterized in that: the water tank driving device comprises a supporting base fixed at the bottom of a water tank, wherein a driving part is arranged on the supporting base, and a bearing seat is fixed at the upper end of the supporting base;

the bearing seat is provided with a thrust self-aligning roller bearing, the upper end face of the bearing seat is fixed with a first gland, the first gland is provided with a first self-aligning roller bearing, the upper end face of the first gland is provided with a second gland, the rotating shaft is in running fit with the thrust self-aligning roller bearing and the first self-aligning roller bearing, the lower end of the rotating shaft is connected with the output end of the driving part, and the upper end of the rotating shaft is fixed with a workpiece mounting table;

the lower step of the first gland is fixedly connected with a protective cover, the lower end of the protective cover is fixedly connected with the bottom of the water tank, and the bearing seat and the support base are arranged in the inner cavity of the protective cover;

the second gland is fixed to the upper end of first gland, set up sealing device on the rotation axis, sealing device's lower extreme supports on the second gland, and sealing device's upper end fixed connection sand control maintenance lid, the lower extreme of sand control maintenance lid and the top cambered surface rolling contact of second gland.

As a further improvement of the utility model, drive assembly includes AC servo motor, and AC servo motor is connected with gear change box's input, and gear change box's output sets up gearbox output flange, and gearbox output flange passes through mounting bolt group fixed connection main shaft connecting flange, and main shaft connecting flange is drive assembly's output, and main shaft connecting flange passes through spline and rotation axis fixed connection.

As a further improvement of the utility model, sealing device includes along the axial from last sleeve down set gradually, on protect a section of thick bamboo, support flange down, go up telescopic top fixed connection sand control maintenance lid, on protect a section of thick bamboo, protect a section of thick bamboo and the cavity of the circumferential surface formation of rotation axis down and set up the spring, the upper end top of spring is tight in the inner wall top of protecting a section of thick bamboo on, the lower extreme of spring compresses tightly in the up end of protecting a section of thick bamboo down, goes up the section of thick bamboo wall lower extreme cladding of protecting a section of thick bamboo in the circumferential surface of protecting a section of thick bamboo down, and support flange passes through the second gland and supports.

As a further improvement, the sealing rings are respectively arranged between the lower protective cylinder and the rotating shaft, between the supporting flange and the second gland and between the first gland and the second gland.

As a further improvement, the sand control maintenance cover and the protective cover are frustum-shaped structures.

As a further improvement, the bearing seat is provided with a first flow guide hole which is axially communicated, and the outer ring of the joint of the supporting base and the driving part is provided with a second flow guide hole which is axially communicated.

As a further improvement of the utility model, the AC servo motor is provided with a servo control interface.

The technical effects of the utility model reside in that: the utility model aims at the above-mentioned problem, for overcoming current swivel work head can not match the not enough in the water cutting lathe to and current swivel work head not enough and defect, provide a water sword 3D cutting mechanical seal servo swivel work head device. The device adopts a set of complete matching compatible motor/gearbox components, avoids the accumulation of on-site assembly errors of the servo motor and the speed reducer, and ensures the position accuracy and the movement accuracy of the rotary worktable by utilizing the high position accuracy and the movement accuracy of the servo motor/gearbox components; the self-aligning bearings with reasonable layout are adopted to be matched for use, the rotating shaft and the workbench system are supported, and the position precision and the motion precision of the rotating workbench are ensured; the double sealing structure of mechanical rotary seal and labyrinth dustproof sealing ring is adopted, the water-sand mixture cut by the water jet cutter is blocked at the outer layer of the mechanical rotary seal, and the reliability and the service life of the mechanical rotary seal system are improved; meanwhile, in the rotating shaft and bearing system structure, the flow guide holes are formed, so that water and sediment are prevented from accumulating in the rotating shaft and bearing system structure, the reliability of the system is improved, and the service life of the system is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the driving member of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

In fig. 1 to 3, the device comprises a transmission case 1, a support base 2, a rotating shaft 3, a bearing seat 4, a first self-aligning roller bearing 5, a sealing device 6, a labyrinth dustproof sealing ring 7, a water tank 8, a workpiece mounting table 9, a spring 10, a sand prevention maintenance cover 11, a thrust self-aligning roller bearing 12, a protective cover 13, a servo control interface 14, an alternating current servo motor 15, a first flow guide hole 16, a transmission case output flange 17, a main shaft connecting flange 18, a spline 19, a mounting bolt group 20, a first gland 21, a second gland 22, a second flow guide hole 23 and the like.

As shown in FIGS. 1-3, the utility model relates to a water sword 3D cutting mechanical seal servo swivel work head, including being fixed in the support base 2 of 8 bottoms of water tanks, install driver part on the support base 2, support base 2 upper end fixed bearing frame 4.

A thrust self-aligning roller bearing 12 is installed on a bearing seat 4, a first gland 21 is fixed on the upper end face of the bearing seat 4, a first self-aligning roller bearing 5 is installed on the first gland 21, a second gland 22 is installed on the upper end face of the first gland 21, a rotating shaft 3 is in running fit with the thrust self-aligning roller bearing 12 and the first self-aligning roller bearing 5, and the lower end of the rotating shaft 3 is connected with the output end of a driving part.

The lower step of the first gland 21 is fixedly connected with the protective cover 13, the lower end of the protective cover 13 is fixedly connected with the bottom of the water tank 8, and the bearing seat 4 and the support base 2 are arranged in the inner cavity of the protective cover 13.

The fixed second gland 22 in upper end of first gland 21, set up sealing device 6 on the rotation axis 3, sealing device 6's lower extreme supports on second gland 22, and sealing device 6's upper end fixed connection sand control maintenance lid 11, the lower extreme of sand control maintenance lid 11 and the top cambered surface rolling contact of second gland 22. The water tank 8 and the workpiece mounting table 9 are made of S306 stainless steel.

The sand control maintenance cover 11 is made of stainless steel and is sealed with the rotating shaft 3 through a labyrinth dustproof sealing ring 7, so that sand and mud are prevented from entering a sealing surface of the sealing device 6 and entering the sealing surface of the sealing device out of the sealing surface, and the first flow guide hole 16 and the second flow guide hole 23 are arranged to ensure that leakage cannot accumulate in the rotating shaft and a bearing system.

As shown in fig. 2, the driving component includes an ac servo motor 15, the ac servo motor 15 is connected to an input end of the gear transmission case 1, a transmission case output flange 17 is disposed at an output end of the gear transmission case 1, the transmission case output flange 17 is fixedly connected to a main shaft connecting flange 18 through a mounting bolt set 20, the main shaft connecting flange 18 is an output end of the driving component, and the main shaft connecting flange 18 is fixedly connected to the rotating shaft 3 through a spline 19.

When the intelligent robot is used, the driving component is used as a seventh extension shaft of the intelligent robot and is controlled by a robot servo controller synchronous or asynchronous program, the power of the alternating current servo motor 15 is 3.75Kw, the rated torque of the high-ratio planetary gearbox 16 is 3100Nm, and the reduction ratio is 118.5.

The sealing device 6 comprises an upper sleeve 6-1, an upper protective barrel 6-2, a lower protective barrel 6-3 and a supporting flange 6-4 which are sequentially arranged from top to bottom along the axial direction, the top of the upper sleeve 6-1 is fixedly connected with a sand prevention maintenance cover 11, a spring 10 is arranged in a cavity formed by the upper protective barrel 6-2, the lower protective barrel 6-3 and the circumferential surface of the rotating shaft 3, the upper end of the spring 10 is tightly propped against the top of the inner wall of the upper protective barrel 6-2, the lower end of the spring 10 is tightly propped against the upper end face of the lower protective barrel 6-3, the lower end of the barrel wall of the upper protective barrel 6-2 is wrapped on the circumferential surface of the lower protective barrel 6-3, and the supporting flange 6-4 is supported by a second gland 22.

Sealing rings are respectively arranged between the lower protective cylinder 6-3 and the rotating shaft 3, between the supporting flange 6-4 and the second gland 22, and between the first gland 21 and the second gland 22. The sand control maintenance cover 11 and the protective cover 13 are both in frustum-shaped structures.

In the embodiment, the thrust first self-aligning roller bearing 12 bears the axial force generated by the gravity of the rotating shaft 3 and a workpiece, spherical rollers in the bearing are obliquely arranged, and because the raceway surface of the race ring is a spherical surface, the bearing has self-aligning performance and large axial load bearing capacity, and can bear a plurality of radial loads while bearing the axial load; the first self-aligning roller bearing 5 has the self-aligning performance because the arc center of the outer ring raceway is consistent with the bearing center, so that the misalignment of the axis caused by the deflection or the non-concentricity of the shaft or the shell can be automatically adjusted, and the radial load and the bidirectional axial load can be borne. Especially, the radial load capacity is large, the blade disc water jet cutter is suitable for bearing heavy load and impact load, and is beneficial to cutting of the integral blade disc.

The bearing seat 4 is provided with a first guide hole 16 which is axially communicated, and an outer ring at the joint of the support base 2 and the driving part is provided with a second guide hole 23 which is axially communicated. The ac servomotor 15 is provided with a servo control interface 14.

Selecting the working mode of a water jet cutter 3D cutting mechanical seal servo rotary worktable: the intelligent robot control system comprises a position mode, a speed mode, a synchronous mode and an asynchronous mode, a configuration program corresponding to the working mode is input into the intelligent robot control system, and the control system sends an instruction to a servo motor driver to control the servo motor to move. The high rotating speed and the low torque of the servo motor are converted into low rotating speed and large torque through the high-ratio planetary gear gearbox, the rotating shaft is driven to rotate, and the rotating shaft drives the workbench to perform specific work. The cutting device is mainly arranged in a water jet cutting machining center to realize the cutting work of rotary parts. And the machine tool can also be configured on other machine tools under complex working conditions such as water, sand and the like.

The utility model discloses the product is when using, and the servo swivel work head of water sword 3D cutting mechanical seal of complement in water cutting machine tool can submerge completely in underwater work along with the rising of water level. The rotating device has a speed mode and a position mode, can be synchronous with a machine tool or asynchronous with the machine tool, is configured on water cutting machine tools such as a 3-axis water jet cutter, a 5-axis water jet cutter and a 7-axis intelligent robot water jet cutter, and improves the processing performance of the water cutting machine tools on rotary parts, such as: disk shaft cutting, blisk cutting, etc.

Claims

1. The utility model provides a servo swivel work head of water sword 3D cutting mechanical seal which characterized in that: the water tank water heater comprises a supporting base (2) fixed at the bottom of a water tank (8), wherein a driving part is arranged on the supporting base (2), and a bearing seat (4) is fixed at the upper end of the supporting base (2);

a thrust self-aligning roller bearing (12) is installed on a bearing seat (4), a first gland (21) is fixed on the upper end face of the bearing seat (4), a first self-aligning roller bearing (5) is installed on the first gland (21), a second gland (22) is installed on the upper end face of the first gland (21), a rotating shaft (3) is in running fit with the thrust self-aligning roller bearing (12) and the first self-aligning roller bearing (5), the lower end of the rotating shaft (3) is connected with the output end of a driving part, and a workpiece installation table (9) is fixed on the upper end of the rotating shaft (3);

the lower step of the first gland (21) is fixedly connected with a protective cover (13), the lower end of the protective cover (13) is fixedly connected with the bottom of the water tank (8), and the bearing seat (4) and the support base (2) are arranged in the inner cavity of the protective cover (13);

second gland (22) are fixed to the upper end of first gland (21), set up sealing device (6) on rotation axis (3), the lower extreme of sealing device (6) supports on second gland (22), and the upper end fixed connection sand control maintenance lid (11) of sealing device (6), the lower extreme of sand control maintenance lid (11) and the top cambered surface rolling contact of second gland (22).

2. The water-jet-cutter 3D cutting mechanical seal servo rotary table of claim 1, wherein: the driving part comprises an alternating current servo motor (15), the alternating current servo motor (15) is connected with the input end of the gear transmission case (1), the output end of the gear transmission case (1) is provided with a transmission case output flange (17), the transmission case output flange (17) is fixedly connected with a main shaft connecting flange (18) through an installation bolt group (20), the main shaft connecting flange (18) is the output end of the driving part, and the main shaft connecting flange (18) is fixedly connected with the rotating shaft (3) through a spline (19).

3. The water-jet-cutter 3D cutting mechanical seal servo rotary table of claim 1, wherein: the sealing device (6) comprises an upper sleeve (6-1), an upper protective barrel (6-2), a lower protective barrel (6-3) and a supporting flange (6-4) which are sequentially arranged from top to bottom along the axial direction, the top of the upper sleeve (6-1) is fixedly connected with a sand prevention maintenance cover (11), a spring (10) is arranged in a cavity formed by the circumferential surfaces of the upper protective barrel (6-2), the lower protective barrel (6-3) and the rotating shaft (3), the upper end of the spring (10) is tightly pressed against the top of the inner wall of the upper protective barrel (6-2), the lower end of the spring (10) is tightly pressed against the upper end surface of the lower protective barrel (6-3), the lower end of the upper protective barrel (6-2) is coated on the circumferential surface of the lower protective barrel (6-3), and the supporting flange (6-4) is supported by a second gland (22).

4. The water-jet-cutter 3D cutting mechanical seal servo rotary table of claim 3, wherein: and sealing rings are respectively arranged between the lower protective cylinder (6-3) and the rotating shaft (3), between the supporting flange (6-4) and the second gland (22) and between the first gland (21) and the second gland (22).

5. The water-jet-cutter 3D cutting mechanical seal servo rotary table of claim 1, wherein: the sand control maintenance cover (11) and the protective cover (13) are both in frustum-shaped structures.

6. The water-jet-cutter 3D cutting mechanical seal servo rotary table of claim 1, wherein: the bearing seat (4) is provided with a first flow guide hole (16) which is axially communicated, and an outer ring at the joint of the support base (2) and the driving part is provided with a second flow guide hole (23) which is axially communicated.

7. The water-jet-cutter 3D cutting mechanical seal servo rotary table of claim 2, wherein: the alternating current servo motor (15) is provided with a servo control interface (14).