CN111331403A - Long-span self-centering mechanism - Google Patents

Long-span self-centering mechanism Download PDF

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Publication number
CN111331403A
CN111331403A CN202010300767.1A CN202010300767A CN111331403A CN 111331403 A CN111331403 A CN 111331403A CN 202010300767 A CN202010300767 A CN 202010300767A CN 111331403 A CN111331403 A CN 111331403A
Authority
CN
China
Prior art keywords
guide rail
sliding plate
slide
long
pressing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010300767.1A
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Chinese (zh)
Inventor
卢红印
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI BEST PRECISION MACHINERY CO Ltd
Original Assignee
WUXI BEST PRECISION MACHINERY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WUXI BEST PRECISION MACHINERY CO Ltd filed Critical WUXI BEST PRECISION MACHINERY CO Ltd
Priority to CN202010300767.1A priority Critical patent/CN111331403A/en
Publication of CN111331403A publication Critical patent/CN111331403A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
    • B23Q15/22—Control or regulation of position of tool or workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders

Abstract

The invention relates to a long-span self-centering mechanism which comprises a mounting plate, wherein a pressing driving mechanism is arranged on the mounting plate, and two sides of the pressing driving mechanism are connected with a pressing mechanism; the pressing driving mechanism comprises a guide rail, a sliding plate is arranged on the guide rail in a sliding mode, a pressing driving element is arranged on one side of the sliding plate, the movable end of the pressing driving element is connected with the sliding plate, the pressing mechanism comprises a side guide rail, a side sliding plate is arranged on the side guide rail in a sliding mode, the inner end of the side sliding plate is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to the outer end of the sliding plate. The invention has good structural rigidity, is simple and reliable, is convenient to maintain, can provide larger centering thrust by smaller driving force, and can automatically center two points of a long-span workpiece.

Description

Long-span self-centering mechanism
Technical Field
The invention belongs to the technical field of machining, clamping and positioning, and relates to a long-span self-centering mechanism.
Background
With the continuous development of the automobile industry, the processing requirements on automobile parts are higher and higher. In order to ensure the machining precision in the workpiece with the symmetrical structure, the symmetrical structure of the workpiece is used as a reference for positioning the workpiece in the machining fixture. This requires a set of self-centering mechanisms. For workpieces with long spans and symmetrical mechanisms, the traditional self-centering mechanism is not suitable any more, and a set of long-span self-centering mechanism is needed.
Disclosure of Invention
The invention aims to provide a long-span self-centering mechanism which can automatically center two points of a long-span workpiece, has a boosting function, and can provide larger centering thrust by smaller driving force
According to the technical scheme provided by the invention, the long-span self-centering mechanism comprises a mounting plate, wherein a pressing driving mechanism is arranged on the mounting plate, and two sides of the pressing driving mechanism are connected with a pressing mechanism; the pressing driving mechanism comprises a guide rail, a sliding plate is arranged on the guide rail in a sliding mode, a pressing driving element is arranged on one side of the sliding plate, the movable end of the pressing driving element is connected with the sliding plate, the pressing mechanism comprises a side guide rail, a side sliding plate is arranged on the side guide rail in a sliding mode, the inner end of the side sliding plate is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to the outer end of the sliding plate, and a pressing block is arranged on the outer side.
As a further improvement of the invention, the pressing driving element is a cylinder, and the piston end of the cylinder is connected with the sliding plate.
As a further improvement of the invention, the cylinder body is arranged on the mounting plate through a cylinder rear mounting plate and a cylinder front mounting plate.
As a further improvement of the invention, one side of the pressing driving mechanism is provided with an upper guide rail, an upper sliding plate is arranged in the upper guide rail in a sliding manner, the inner end of the upper sliding plate is hinged with one end of an upper rod through an upper pin shaft, the other end of the upper rod is hinged with the outer end of the sliding plate through a side upper pin shaft, the outer side of the upper sliding plate is provided with an upper pressing block, one side of the pressing driving mechanism is provided with a lower guide rail, a lower sliding plate is arranged in the lower guide rail in a sliding manner, the inner end of the lower sliding plate is hinged with one end of a lower rod through an upper pin shaft and a lower pin shaft, the other end of the lower rod.
As a further improvement of the invention, the guide rail is perpendicular to the side guide rail.
As a further improvement of the invention, a regulating sheet is arranged between the side sliding plate and the pressing block.
Compared with the prior art, the invention has the following advantages:
the invention has good structural rigidity, is simple and reliable, is convenient to maintain, can provide larger centering thrust by smaller driving force, and can automatically center two points of a long-span workpiece.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural diagram of the workpiece of the present invention when it is not positioned.
FIG. 3 is a schematic view of a workpiece after positioning according to the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In fig. 1 to 3, the device comprises a mounting plate 1, an upper guide rail 2, an upper pressing block 3, an upper adjusting plate 4, an upper sliding plate 5, an upper pin shaft 6, an upper rod 7, a cylinder rear mounting plate 8, a cylinder 9, a cylinder front mounting plate 10, a joint 11, a side upper pin shaft 12, a sliding plate 13, a guide rail 14, a side lower pin shaft 15, a lower rod 16, a lower guide rail 17, a lower pin shaft 18, a lower sliding plate 19, a lower adjusting plate 20, a lower pressing block 21 and the like.
As shown in figure 1, the invention relates to a long-span self-centering mechanism which comprises a mounting plate 1, an upper guide rail 2, an upper pressing block 3, an upper adjusting plate 4, an upper sliding plate 5, an upper pin shaft 6, an upper rod 7, a cylinder rear mounting plate 8, a cylinder 9, a cylinder front mounting plate 10, a joint 11, a side upper pin shaft 12, a sliding plate 13, a guide rail 14, a side lower pin shaft 15, a lower rod 16, a lower guide rail 17, a lower pin shaft 18, a lower sliding plate 19, a lower adjusting plate 20, a lower pressing block 21 and the like.
The mounting plate 1 of the cutter placing frame is fixed on a clamp, the guide rail of the upper guide rail 2 is fixed on the mounting plate 1 through screws, and the upper sliding plate 5 is fixed on the sliding block of the upper guide rail 2 through screws. The upper pressing block 3 and the upper adjustment sheet 4 are fixed on the side of the upper sliding plate 5 by screws. The upper sliding plate 5 is provided with a pin hole. The upper end and the lower end of the upper rod 7 are respectively provided with a pin hole. The upper pin shaft 6 passes through a pin hole on the upper sliding plate 5 and a pin hole on the upper part of the upper rod 7 to hinge the upper sliding plate and the upper sliding plate. The cylinder rear mounting plate 8 and the cylinder front mounting plate 10 are fixed on the mounting plate 1, and the cylinder body of the cylinder 9 is fixed by the cylinder rear mounting plate 8 and the cylinder front mounting plate 10. The piston rod of the cylinder 9 is connected with a joint 11 through threads. The screw thread on the other side of the joint 11 is connected with a slide plate 13. The slide 13 is fixed to the slide of the guide rail 14. The rails of the rail 14 are fixed to the mounting plate 1 by screws. Pin holes are arranged above and below the sliding plate 13. The side upper pin 12 passes through the pin hole at the upper part of the sliding plate 13 and is hinged with the pin hole at the lower part of the upper rod 7. The upper and lower ends of the lower rod 16 are respectively provided with pin holes. The side lower pin shaft 15 passes through a pin hole at the lower part of the sliding plate 13 and is hinged with a pin hole at the upper part of the lower rod 16. The guide rail of the lower guide rail 17 is fixed to the mounting plate 1 by screws, and the lower slide plate 19 is fixed to the slider of the lower guide rail 17 by screws. The lower slide plate 19 is provided with a pin hole. The lower pin shaft 18 passes through a pin hole on the lower sliding plate 19 and a pin hole on the lower part of the lower rod 16 to hinge the two. The lower pressing block 21 and the lower regulation piece 20 are fixed to the side of the lower slide plate 19 by screws.
The working process of the invention is as follows:
as shown in fig. 2, when the workpiece is fed to the jig, the upper positioning surface of the workpiece is pressed downward against the positioning block 3 and the lower positioning surface is disengaged from the lower positioning block 21 by gravity. When the workpiece is pressed, the air hole at the front part of the air cylinder 9 is filled with air, the piston rod of the air cylinder 9 retracts, and the sliding plate 13 is pulled to move rightwards through the joint 11 fixed on the piston rod of the air cylinder 9. The upper rod 7 and the lower rod 16 are driven to move towards two sides by the side upper pin shaft 12 and the side lower pin shaft 15 which are arranged at the upper side and the lower side of the sliding plate 13. The upper rod 7 drives the upper sliding plate 5 to move upwards along the guide rail of the upper guide rail 2 through the upper pin shaft 6, and simultaneously the lower rod 16 drives the lower sliding plate 19 to move downwards along the guide rail of the lower guide rail 17 through the lower pin shaft 18. The upper slide 5 drives the upper adjusting sheet 4 and the upper pressing block 3 to move upwards. The lower slide plate 19 moves the lower adjustment piece 20 and the lower pressing block 21 downward. The upper pressing block 3 and the lower pressing block 21 are simultaneously outwards propped out until the upper pressing block 3 and the lower pressing block 21 contact the positioning surface on the workpiece. As shown in fig. 3, due to the symmetrical structure, the displacement of the upper pressing block 3 is the same as that of the lower pressing block 21, and the upper pressing block 3 and the lower pressing block 21 adjust the position of the workpiece to automatically center the workpiece, so that the centering accuracy of the workpiece is ensured. The upper adjusting sheet 4 and the lower adjusting sheet 20 are used for micro adjustment to compensate for machining errors of parts.
Similarly, when the workpiece needs to be loosened, the rear air hole of the air cylinder 9 is used for air intake, the piston rod of the air cylinder 9 extends out, and the sliding plate 13 is pulled to move leftwards through the joint 11 fixed on the piston rod of the air cylinder 9. The upper rod 7 and the lower rod 16 are driven to contract inwards by the upper side pin shaft 12 and the lower side pin shaft 15 on the upper side and the lower side of the sliding plate 13. The upper rod 7 drives the upper sliding plate 5 to move downwards along the guide rail of the upper guide rail 2 through the upper pin shaft 6, and simultaneously the lower rod 16 drives the lower sliding plate 19 to move upwards along the guide rail of the lower guide rail 17 through the lower pin shaft 18. The upper slide 5 drives the upper adjusting sheet 4 and the upper pressing block 3 to move downwards. The lower slide plate 19 drives the lower adjusting plate 20 and the lower pressing block 21 to move upward. The upper pressing block 3 and the lower pressing block 21 are simultaneously contracted inward to release the workpiece.

Claims (6)

1. A long-span self-centering mechanism, characterized in that: the mechanism comprises a mounting plate (1), wherein a pressing driving mechanism is arranged on the mounting plate (1), and two sides of the pressing driving mechanism are connected with a pressing mechanism; compress tightly actuating mechanism and include guide rail (14), slide on guide rail (14) and set up slide (13), slide (13) one side sets up and compresses tightly driving element, it connects to compress tightly driving element expansion end slide (13), hold-down mechanism includes the side guide rail, slide on the side guide rail and set up the side slide, the articulated connecting rod one end in side slide inner, the connecting rod other end is articulated slide (13) outer end, the side slide outside sets up the compact heap.
2. The long-span self-centering mechanism of claim 1, wherein: the pressing driving element is a cylinder (9), and the piston end of the cylinder (9) is connected with the sliding plate (13).
3. The long-span self-centering mechanism of claim 2, wherein: the cylinder body of the cylinder (9) is arranged on the mounting plate (1) through a cylinder rear mounting plate (8) and a cylinder front mounting plate (10).
4. The long-span self-centering mechanism of claim 1, wherein: the pressing driving mechanism is characterized in that an upper guide rail (2) is arranged on one side of the pressing driving mechanism, an upper sliding plate (5) is arranged in the upper guide rail (2) in a sliding mode, the inner end of the upper sliding plate (5) is hinged to one end of an upper rod (7) through an upper pin shaft (6), the other end of the upper rod (7) is hinged to the outer end of a sliding plate (13) through an upper pin shaft (12), an upper pressing block (3) is arranged on the outer side of the upper sliding plate (5), a lower guide rail (17) is arranged on one side of the pressing driving mechanism, a lower sliding plate (19) is arranged in the lower guide rail (17) in a sliding mode, the inner end of the lower sliding plate (19) is hinged to one end of a lower rod (16) through an upper pin shaft (18) and a lower pin shaft (15), the outer end of the sliding plate.
5. The long-span self-centering mechanism of claim 1, wherein: the guide rail (14) is perpendicular to the side guide rail.
6. The long-span self-centering mechanism of claim 1, wherein: an adjusting sheet is arranged between the side sliding plate and the pressing block.
CN202010300767.1A 2020-04-16 2020-04-16 Long-span self-centering mechanism Pending CN111331403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010300767.1A CN111331403A (en) 2020-04-16 2020-04-16 Long-span self-centering mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010300767.1A CN111331403A (en) 2020-04-16 2020-04-16 Long-span self-centering mechanism

Publications (1)

Publication Number Publication Date
CN111331403A true CN111331403A (en) 2020-06-26

Family

ID=71177193

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010300767.1A Pending CN111331403A (en) 2020-04-16 2020-04-16 Long-span self-centering mechanism

Country Status (1)

Country Link
CN (1) CN111331403A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101844308A (en) * 2009-03-27 2010-09-29 王明昆 Novel machine tool workpiece positioning clamping mechanism
CN102975053A (en) * 2012-12-19 2013-03-20 徐州宇家医药科技有限公司 Ring workpiece centering and clamping fixture
CN104551065A (en) * 2014-12-12 2015-04-29 安徽白兔湖动力股份有限公司 Automatic quick centring clamping mechanism dedicated for axle type or cover type part
CN104690579A (en) * 2015-03-31 2015-06-10 济南西马特数控机械有限公司 Self-centering clamping device
WO2017120132A1 (en) * 2016-01-04 2017-07-13 Carson Optical, Inc. Locking centering mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101844308A (en) * 2009-03-27 2010-09-29 王明昆 Novel machine tool workpiece positioning clamping mechanism
CN102975053A (en) * 2012-12-19 2013-03-20 徐州宇家医药科技有限公司 Ring workpiece centering and clamping fixture
CN104551065A (en) * 2014-12-12 2015-04-29 安徽白兔湖动力股份有限公司 Automatic quick centring clamping mechanism dedicated for axle type or cover type part
CN104690579A (en) * 2015-03-31 2015-06-10 济南西马特数控机械有限公司 Self-centering clamping device
WO2017120132A1 (en) * 2016-01-04 2017-07-13 Carson Optical, Inc. Locking centering mechanism

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SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
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Application publication date: 20200626

RJ01 Rejection of invention patent application after publication