CN110614521A - Magnetorheological flexible clamp device for thin-wall component machining - Google Patents
Magnetorheological flexible clamp device for thin-wall component machining Download PDFInfo
- Publication number
- CN110614521A CN110614521A CN201910885476.0A CN201910885476A CN110614521A CN 110614521 A CN110614521 A CN 110614521A CN 201910885476 A CN201910885476 A CN 201910885476A CN 110614521 A CN110614521 A CN 110614521A
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- China
- Prior art keywords
- thin
- box body
- base
- magnetorheological
- side tank
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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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
-
- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/086—Work-clamping means other than mechanically-actuated using a solidifying liquid, e.g. with freezing, setting or hardening means
Abstract
The invention provides a magnetorheological flexible clamp device for processing a thin-wall component, which is used for clamping the thin-wall component and has the characteristics that: the base assembly body is provided with a base, a spiral lifting support, a spiral lifter, a servo motor, a box body support, a linear guide rail and a sliding block; the magnetorheological fluid container is used for containing magnetorheological fluid and is provided with a box body, an angle plate, a lifting plate and a guide rod; a plurality of side tank assemblies each having a side tank connected to the slider through a side tank support at the bottom, an electromagnet placed in the side tank, and a side tank cover plate for closing the side tank; the ball screw assembly bodies are provided with bearing seats fixed on the base, nut seats connected with the bearing seats and the bottoms of the side boxes, ball screws connected with the nut seats, motor bases connected with the ball screws and fixed on the base, couplers arranged in the motor bases and motors fixed on the motor bases and connected with the couplers; and a control unit which is connected with a computer in a communication way.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to a magnetorheological flexible clamp device for machining a thin-wall component.
Background
With the continuous development of the fields of aerospace and automobile manufacturing, the requirement on precision of parts is higher and higher. The thin-wall parts are easy to deform and vibrate in the machining process due to poor rigidity, weak strength and irregular appearance, so that the machining precision is low and the machining quality is reduced. How to improve the machining precision of thin-walled parts to meet the machining requirements has been a concern in the industry. The traditional mechanical clamp is fixed in shape and rigidity, cannot be in complete contact with a thin-wall part, has uneven clamping force, often cannot meet the requirements of positioning and clamping a workpiece with low rigidity or irregular geometric shape, and has lower processing adaptability to thin-wall parts with different characteristics. Therefore, the development of flexible fixtures is an important research direction in modern manufacturing.
The flexible clamp in the current market is mainly an adjustable clamp and a combined clamp. The adjustable clamp can meet the requirements of clamping various different workpieces by replacing or adjusting certain elements arranged on the clamp base. The combined clamp is assembled into various required clamps by using the components according to the processing requirements of workpieces on the basis of high standardization, universalization and serialization of clamp components. The two flexible clamps improve the adaptability of the clamp to a workpiece to a certain extent. However, since the basic component parts are still standardized parts, the method is still not suitable for workpieces with complex shapes, especially parts with thin-wall characteristics. In addition, the prior art also has an early magnetorheological fluid flexible clamp, the clamp takes a permanent magnet as a magnetorheological source, a workpiece is placed in a container box with the magnetorheological fluid, and the magnetorheological fluid is solidified under the action of a magnetic field to clamp and process the workpiece. The clamp is a relatively new clamp so far, can adapt to thin-wall parts of different shapes and types, but because the permanent magnet is used as a magnetic current source, the magnetic field intensity is limited, the clamping force range is small, only a small workpiece can be clamped, when the volume of the magnetorheological fluid is large, the workpiece cannot be stably clamped, and meanwhile, the adjustability of the magnetic field intensity is not high, and the magnet is heavy to move.
Disclosure of Invention
The invention is made to solve the above problems, and an object of the invention is to provide a magnetorheological flexible fixture device for thin-wall member processing.
The invention provides a magnetorheological flexible clamp device for processing a thin-wall component, which is used for clamping the thin-wall component and has the characteristics that: the base assembly body is provided with a base arranged on a machine tool workbench, a spiral lifting support arranged in the center of the base, a spiral lifter arranged on the spiral lifting support, a servo motor connected with the spiral lifter and used for driving the spiral lifter, a box body support arranged in the center of the long edge of the base, four linear guide rails respectively arranged at two ends of the base and a sliding block arranged on the linear guide rails; the magnetorheological fluid container is used for containing magnetorheological fluid and is provided with a box body, angle plates arranged at the bottoms of the two sides of the short edge of the box body and used for being connected with a bracket of the box body, a lifting plate arranged in the box body and a guide rod vertically arranged on the lifting plate; a plurality of side tank assemblies each having a side tank connected to the slider through a side tank support at the bottom, an electromagnet placed in the side tank, and a side tank cover plate for closing the side tank; the ball screw assembly bodies are provided with bearing seats fixed on the base, nut seats connected with the bearing seats and the bottoms of the side boxes, ball screws connected with the nut seats, motor bases connected with the ball screws and fixed on the base, couplers arranged in the motor bases and motors fixed on the motor bases and connected with the couplers; and the control unit is in communication connection with a computer and is used for controlling the intensity of the electrifying current of the electromagnet, the position of the side box assembly body and the height of the lifting plate, wherein phi 20 through holes are formed in the box body and the lifting plate and are used for installing the positioning rod, the bottom of the lifting plate is arranged on the spiral lifter and drives the lifting plate to move up and down in the box body through the up-and-down movement of the spiral lifter, so that the volume inside the box body is changed, magnetorheological fluids with different volumes are put into the lifting plate to adapt to thin-wall components with different sizes, the nut seat is connected with the bottom of the side box, and the motor drives the ball screw to move so as to drive the side box assembly body to slide along the linear.
In the thin-wall member processing magnetorheological flexible fixture device provided by the invention, the thin-wall member processing magnetorheological flexible fixture device can also have the following characteristics: wherein, the both ends of base are equipped with two parallel arrangement's linear guide respectively.
In the thin-wall member processing magnetorheological flexible fixture device provided by the invention, the thin-wall member processing magnetorheological flexible fixture device can also have the following characteristics: wherein, the quantity of side case assembly body is 2, sets up respectively in the both sides of box.
In the thin-wall member processing magnetorheological flexible fixture device provided by the invention, the thin-wall member processing magnetorheological flexible fixture device can also have the following characteristics: wherein, the quantity of ball lever assembly body is 2, installs respectively between two linear guide of base both sides.
In the thin-wall member processing magnetorheological flexible fixture device provided by the invention, the thin-wall member processing magnetorheological flexible fixture device can also have the following characteristics: wherein, still be connected with the fixed assembly body of handle on the box support, this fixed assembly body of handle is used for fixing box support and scute.
In the thin-wall member processing magnetorheological flexible fixture device provided by the invention, the thin-wall member processing magnetorheological flexible fixture device can also have the following characteristics: the computer controls the servo motor to drive the spiral lifter to move through the control unit after analyzing the shape and the size of the thin-wall component, so that the volume inside the box body is changed by adjusting the position of the lifting plate, the control unit adjusts the size of the electrified current of the electromagnet to adjust the magnetic field intensity, and the control unit controls the motor to drive the ball screw to move to adjust the position of the electromagnet placed in the side box so as to adjust the magnetic field intensity.
Action and Effect of the invention
According to the thin-wall member processing magnetorheological flexible fixture device, the electromagnet is electrified to serve as a magnetic current source, the magnetic field is generated by the electromagnet, so that the magnetorheological fluid is solidified to clamp the thin-wall member, and the size and the strength of the magnetic field are controllable, so that a larger clamping force can be provided; because the linear guide rail and the sliding block are arranged, the side box assembly body is connected to the sliding block, the bottom of the side box is connected with the nut seat, and the motor drives the ball screw to move so as to drive the side box assembly body to slide along the linear track, the position of the electromagnet can be changed by simply and conveniently changing the position of the side box in the horizontal direction, so that the magnetic field intensity can be adjusted; because the lifting plate is arranged in the box body, the bottom of the lifting plate is arranged on the spiral lifter, and the lifting plate is driven to move up and down in the box body through the up-and-down movement of the spiral lifter, so that the volume in the box body is changed, and magnetorheological fluids with different volumes can be put in to adapt to thin-wall components with different sizes; because the through holes are formed in the side wall of the box body and the lifting plate for inserting the positioning rods, the thin-wall component can be positioned and pre-tightened before machining, and the thin-wall component can be clamped more stably. Therefore, the thin-wall member processing magnetorheological flexible clamp device has the advantages of flexible operation, good adjustability, controllable magnetic field size and large magnetic field intensity range, and can adjust the volume of the magnetorheological fluid to the thin-wall members with various shapes and volumes to meet the processing requirements.
Drawings
FIG. 1 is an overall block diagram of a thin-walled component processing magnetorheological flexible fixture apparatus in an embodiment of the invention;
FIG. 2 is a schematic diagram of a base assembly according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a magnetorheological fluid container in an embodiment of the invention;
FIG. 4 is a schematic structural view of a side tank assembly in an embodiment of the present invention;
FIG. 5 is a schematic structural view of a ball screw assembly according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a positioning rod in an embodiment of the invention.
Detailed Description
In order to make the technical means and functions of the present invention easy to understand, the present invention is specifically described below with reference to the embodiments and the accompanying drawings.
FIG. 1 is an overall structural diagram of a thin-walled component machining magnetorheological flexible fixture device in an embodiment of the invention.
As shown in fig. 1, the magnetorheological flexible fixture apparatus 100 for processing a thin-walled member according to the embodiment is used for clamping a thin-walled member, and includes a base assembly 10, a magnetorheological fluid container 20, a plurality of side tank assemblies 30, a plurality of ball screw assemblies 40, and a control unit.
And the control unit is in communication connection with a computer.
Fig. 2 is a schematic structural view of a base assembly according to an embodiment of the present invention.
As shown in fig. 2, the base assembly 10 has a base 11 placed on a machine tool table, a screw elevating bracket 12 provided at the center of the base 11, a screw elevator 13 mounted on the screw elevating bracket 12, a servo motor 14 connected to the screw elevator 13 for driving the screw elevator 13, a box support 15 provided at the center of the long side of the base 11, four linear guides 16 provided at both ends of the base 11, respectively, and a slider 17 provided on the linear guides 16.
Two parallel linear guide rails 16 are respectively arranged at two ends of the base 11.
In this embodiment, the linear guide rails 16 are symmetrically disposed on both sides of the spiral lifting bracket 12, and two parallel linear guide rails 16 are disposed on each side.
Fig. 3 is a schematic structural view of a magnetorheological fluid container in an embodiment of the invention.
As shown in fig. 3, the magnetorheological fluid container 20 is used for containing magnetorheological fluid and has a box body 21, angle plates 22 arranged at the bottoms of the two sides of the short side of the box body 21 and used for being connected with the box body bracket 15, a lifting plate 23 arranged in the box body 21 and a guide rod 24 vertically arranged on the lifting plate 23.
In this embodiment, the guide bar 24 is vertically provided at the top corner of the lifting plate 23.
The box body support 15 is further connected with a handle fixing assembly 18, and the handle fixing assembly 18 is used for reinforcing and fixing the box body support 15 and the angle plate 22, so that unnecessary vibration displacement generated in the machining process is reduced.
The bottom of the lifting plate 23 is arranged on the spiral lifter 13, the lifting plate 23 is driven to move up and down in the box body 21 through the up-and-down movement of the spiral lifter 13, so that the volume inside the box body 21 is changed, and magnetorheological fluids with different volumes are put in to adapt to thin-wall components with different sizes.
In this embodiment, the computer obtains the internal volume of the box 21 matching the size of the thin-walled member inserted therein by analyzing the size of the thin-walled member inserted in the box 21 and controlling the position of the elevating plate 23 by controlling the operation of the servo motor 14 by the control unit.
FIG. 4 is a schematic view of the construction of a side tank assembly in an embodiment of the present invention.
As shown in fig. 4, each of the plurality of side tank assemblies 30 has a side tank 32 connected to the slider 17 through a side tank support 31 at the bottom, an electromagnet 33 placed in the side tank 32, and a side tank cover 34 for closing the side tank 32.
The number of the side tank assemblies 30 is 2, and the side tank assemblies are respectively provided on both sides of the tank body 21.
The electromagnet 33 is used for being electrified to generate a magnetic field, and the computer controls the current passing through the electromagnet 33 through the control unit to adjust the magnetic field intensity.
Fig. 5 is a schematic structural view of a ball screw assembly in an embodiment of the present invention.
As shown in fig. 5, the plurality of ball screw assemblies 40 include a bearing holder 41 fixed to the base 11, a nut holder 42 connected to the bearing holder 41 and to the bottom of the side case 32, a ball screw 43 connected to the nut holder 42, a motor holder 44 connected to the ball screw 43 and fixed to the base 11, a coupling 45 provided in the motor holder 44, and a motor 46 fixed to the motor holder 44 and connected to the coupling 45.
The output shaft of the motor 44 is connected to a coupling 45.
The number of the ball lever assemblies 40 is 2, and the ball lever assemblies are respectively installed between the two linear guide rails 16 on both sides of the base 11.
The nut seat 42 is connected with the bottom of the side box 32, when the computer controls the motor 44 to operate through the control unit, the motor 44 drives the ball screw 43 to rotate through the coupler 45, the ball screw 43 converts the rotation motion into a linear motion so as to drive the side box assembly 30 to slide along the linear guide rail 16, and thus the distance between the electromagnet 33 and the box body 21 is changed to adjust the magnetic field intensity.
The case 21 and the elevating plate 23 are each provided with a through hole 25 of phi 20, and the through hole 25 of phi 20 is used for mounting the positioning rod 50.
Fig. 6 is a schematic cross-sectional view of a positioning rod in an embodiment of the invention.
As shown in fig. 6, the positioning rod 50 is inserted into the through hole 25 of Φ 20 to position and preload the thin-walled member placed in the case 21.
The working process of the thin-wall member processing magnetorheological flexible fixture device 100 of the embodiment is as follows: firstly, parts to be processed are placed in a magnetorheological fluid container 20, a computer controls a servo motor 14 to move according to the size of the parts after analyzing the size of the parts through a control unit to drive a spiral lifter 13 so as to adjust the position of a lifting plate 23 and change the size of the volume of the container, then a positioning rod 50 is inserted into the side wall of the box body 21 and the lifting plate 23 to position and pre-tighten the processed parts, then appropriate amount of magnetorheological fluid liquid is poured into the box body 21 to wrap the periphery of the parts, then an electromagnet 33 is electrified to generate a magnetic field, the current is adjusted through the control unit according to the processing requirement, a motor 44 is controlled by the control unit to rotate so as to drive a side box assembly 30 to move so as to move the position of a side box 32 to adjust the distance between the electromagnet 33 and the box body 21, the adjustable range of the magnetorheological fluid is maximized, and the magnetorheological fluid is solidified by generating magnetic fields, to hold the part in place.
Effects and effects of the embodiments
According to the thin-wall member processing magnetorheological flexible fixture device, the electromagnet is electrified to serve as a magnetic current source, the magnetic field is generated by the electromagnet, so that the magnetorheological fluid is solidified to clamp the thin-wall member, and the size and the strength of the magnetic field are controllable, so that a larger clamping force can be provided; because the linear guide rail and the sliding block are arranged, the side box assembly body is connected to the sliding block, the bottom of the side box is connected with the nut seat, and the motor drives the ball screw to move so as to drive the side box assembly body to slide along the linear track, the position of the electromagnet can be changed by simply and conveniently changing the position of the side box in the horizontal direction, so that the magnetic field intensity can be adjusted; because the lifting plate is arranged in the box body, the bottom of the lifting plate is arranged on the spiral lifter, and the lifting plate is driven to move up and down in the box body through the up-and-down movement of the spiral lifter, so that the volume in the box body is changed, and magnetorheological fluids with different volumes can be put in to adapt to thin-wall components with different sizes; because the through holes are formed in the side wall of the box body and the lifting plate for inserting the positioning rods, the thin-wall component can be positioned and pre-tightened before machining, and the thin-wall component can be clamped more stably. Therefore, the thin-wall member processing magnetorheological flexible clamp device has the advantages of flexible operation, good adjustability, controllable magnetic field size and large magnetic field intensity range, and can adjust the volume of magnetorheological fluid to meet the processing requirements for thin-wall members with various shapes and volumes.
Furthermore, the box body support is further connected with a handle fixing assembly body, the handle fixing assembly body is used for fixing the box body support and the angle plate, and unnecessary vibration displacement generated in the machining process is reduced.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (6)
1. The utility model provides a thin wall component processing magnetic current becomes flexible fixture device for carry out the centre gripping to the thin wall component, its characterized in that includes:
the base assembly body is provided with a base arranged on a machine tool workbench, a spiral lifting support arranged at the center of the base, a spiral lifter arranged on the spiral lifting support, a servo motor connected with the spiral lifter and used for driving the spiral lifter, a box body support arranged at the center of the long edge of the base, four linear guide rails respectively arranged at two ends of the base and a sliding block arranged on the linear guide rails;
the magnetorheological fluid container is used for containing magnetorheological fluid and is provided with a box body, angle plates, a lifting plate and guide rods, wherein the angle plates are arranged at the bottoms of the two sides of the short edge of the box body and are used for being connected with the box body bracket;
a plurality of side tank assemblies each having a side tank connected to the slide block by a side tank support at the bottom, an electromagnet placed in the side tank, and a side tank cover plate for closing the side tank;
a plurality of ball screw assemblies each including a bearing seat fixed to the base, a nut seat connected to the bearing seat and to the bottom of the side box, a ball screw connected to the nut seat, a motor seat fixed to the base and connected to the ball screw, a coupling provided in the motor seat, and a motor fixed to the motor seat and connected to the coupling; and
a control unit which is connected with a computer in a communication way and is used for controlling the strength of the electrified current of the electromagnet, the position of the side box assembly body and the height of the lifting plate,
wherein phi 20 through holes are arranged on the box body and the lifting plate, the phi 20 through holes are used for installing positioning rods,
the bottom of the lifting plate is arranged on the spiral lifter, the lifting plate is driven to move up and down in the box body through the up-and-down movement of the spiral lifter, so that the volume in the box body is changed, and the magnetorheological fluid with different volumes is put into the box body to adapt to the thin-wall components with different sizes,
the nut seat is connected with the bottom of the side box, and the motor drives the ball screw to move so as to drive the side box assembly body to slide along the linear track.
2. The thin-walled member processing magnetorheological flexible fixture device of claim 1, wherein:
the two ends of the base are respectively provided with two parallel linear guide rails.
3. The thin-walled member processing magnetorheological flexible fixture device of claim 1, wherein:
wherein, the quantity of side case assembly body is 2, sets up respectively the both sides of box.
4. The thin-walled member processing magnetorheological flexible fixture device of claim 1, wherein:
the number of the ball lever assembly bodies is 2, and the ball lever assembly bodies are respectively arranged between the two linear guide rails on the two sides of the base.
5. The thin-walled component processing magnetorheological flexible fixture of claim 1, wherein:
and the box body support is also connected with a handle fixing assembly body, and the handle fixing assembly body is used for fixing the box body support and the angle plate.
6. The thin-walled component processing magnetorheological flexible fixture of claim 1, wherein:
after the computer analyzes the shape and the size of the thin-wall component, the control unit controls the servo motor to drive the spiral lifter to move so as to adjust the position of the lifting plate to change the volume inside the box body, the control unit adjusts the size of the electrified current of the electromagnet to adjust the magnetic field intensity, and the control unit controls the motor to drive the ball screw to move so as to adjust the position of the electromagnet placed in the side box to adjust the magnetic field intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885476.0A CN110614521A (en) | 2019-09-19 | 2019-09-19 | Magnetorheological flexible clamp device for thin-wall component machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885476.0A CN110614521A (en) | 2019-09-19 | 2019-09-19 | Magnetorheological flexible clamp device for thin-wall component machining |
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| Publication Number | Publication Date |
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| CN110614521A true CN110614521A (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910885476.0A Pending CN110614521A (en) | 2019-09-19 | 2019-09-19 | Magnetorheological flexible clamp device for thin-wall component machining |
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| CN (1) | CN110614521A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230732A (en) * | 2020-03-18 | 2020-06-05 | 浙江师范大学 | Magnetorheological intelligent clamp for grinding |
| CN111546412A (en) * | 2020-05-18 | 2020-08-18 | 陆晓云 | Cutting fixing device suitable for size and used for mechanical automation |
| CN111975420A (en) * | 2020-08-17 | 2020-11-24 | 奚欢 | Workpiece fixing device for industrial production machine tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US11926015B2 (en) | 2020-03-18 | 2024-03-12 | Zhejiang Normal University | Magnetorheological intelligent fixture for grinding |
| CN111546412A (en) * | 2020-05-18 | 2020-08-18 | 陆晓云 | Cutting fixing device suitable for size and used for mechanical automation |
| CN111975420A (en) * | 2020-08-17 | 2020-11-24 | 奚欢 | Workpiece fixing device for industrial production machine tool |
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Application publication date: 20191227 |