CN110936304A - Reverse pneumatic clamping jaw device for locking workpiece - Google Patents
Reverse pneumatic clamping jaw device for locking workpiece Download PDFInfo
- Publication number
- CN110936304A CN110936304A CN201911115347.XA CN201911115347A CN110936304A CN 110936304 A CN110936304 A CN 110936304A CN 201911115347 A CN201911115347 A CN 201911115347A CN 110936304 A CN110936304 A CN 110936304A
- Authority
- CN
- China
- Prior art keywords
- connecting sleeve
- sleeve
- clamping
- plate
- workpiece
- 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
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a reverse pneumatic clamping jaw device for locking a workpiece, which comprises an air cylinder, a fixed sleeve and a clamping jaw, wherein a working shaft of the air cylinder is provided with a threaded connecting sleeve, the fixed sleeve comprises a connecting sleeve, a connecting platform and a positioning lug, the lower end of the connecting sleeve is fixedly connected with a shell of the air cylinder, the connecting platform is fixedly connected with the connecting sleeve, the positioning lug is uniformly arranged around the edge of a middle through hole of the connecting platform, and the clamping jaw is hinged on the fixed sleeve and is in transmission connection with the air cylinder. The reverse pneumatic clamping jaw device for locking the workpiece, disclosed by the invention, has the advantages of reasonable structure, simple structure, convenience in use, accurate positioning and the like, and effectively solves the problem that the concentricity of two plate-shaped workpieces with round holes is difficult to guarantee during processing or welding.
Description
Technical Field
The invention relates to the field of machining auxiliary equipment, in particular to a reverse pneumatic clamping jaw device for locking a workpiece.
Background
In the known technology, when two plate-shaped workpieces with round holes are processed or welded, if the two plate-shaped workpieces need to be tightly attached and the concentricity is guaranteed, the two plate-shaped workpieces are generally positioned in a manner of manually pressing a pressing block and a bolt and a nut, and the pressing block is manually disassembled after the operation is finished.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the problems in the prior art, the reverse pneumatic clamping jaw device for locking the workpiece is provided, has the advantages of reasonable structure, convenience in use, accuracy in positioning and the like, and effectively solves the problem that the concentricity of two plate-shaped workpieces with round holes is difficult to guarantee during processing or welding.
The technical scheme adopted by the invention for solving the technical problems is as follows: a reverse pneumatic clamping jaw device for locking a workpiece comprises a cylinder, a fixed sleeve and a clamping jaw, wherein a working shaft of the cylinder is provided with a threaded connecting sleeve; the fixing sleeve comprises a connecting sleeve, a connecting platform and a positioning lug;
the opening of the connecting sleeve is arranged towards the upper end and the lower end, the lower end of the connecting sleeve is fixedly connected with the shell of the air cylinder, and the working shaft of the air cylinder and the threaded connecting sleeve extend into the inner cavity of the connecting sleeve from the opening at the lower end of the connecting sleeve;
the connecting platform is of a circular structure, the lower end face of the connecting platform is fixedly connected with the upper end of the connecting sleeve, and a middle round hole of the connecting platform is in alignment communication with an opening at the upper end of the connecting sleeve;
the positioning lugs are uniformly arranged around the edge of the middle through hole of the connecting platform, the outward side surfaces of the positioning lugs are provided with guide inclined planes, and clamping grooves are uniformly arranged among the positioning lugs;
the clamping jaw comprises a pull rod, a fan-shaped connecting plate, a clamping plate, a hinged plate and an I-shaped connecting piece; the pull rod is vertically arranged, and the lower end of the pull rod extends into the inner cavity of the connecting sleeve from the opening at the upper end of the connecting sleeve and is fixedly connected with the working shaft of the air cylinder through a threaded connecting sleeve; the upper end of the pull rod is provided with a connecting lug in a radial shape;
the clamping plates are arranged in a radial mode by taking the circle center of the circular hole in the middle of the connecting platform as the center, and the clamping plates are aligned with the clamping grooves; the inward end of the clamping plate is hinged with one end of the I-shaped connecting piece, and the other end of the I-shaped connecting piece is hinged with the connecting lug; the middle part of the clamping plate is hinged with one end of the hinged plate, the other end of the hinged plate is fixedly connected with the fan-shaped connecting plate, and the fan-shaped connecting plate is fixedly connected with the bottom of the clamping groove through a bolt.
Furthermore, an installation through groove is formed in the side wall of the connecting sleeve and communicated with the inner cavity of the connecting sleeve.
Furthermore, the inner cavity of the connecting sleeve is of a circular structure, and the inner cavity of the connecting sleeve and the middle round hole of the connecting platform are arranged on the same central axis.
Furthermore, the outward side surface of the positioning lug and the guide inclined surface are both arc-shaped structures.
Furthermore, a plurality of connecting holes used for being connected with external equipment are uniformly formed in the connecting platform.
Furthermore, when the clamping plate is completely contracted, the clamping plate is completely positioned in the clamping groove, namely when the positioning lug passes through the hole in the workpiece under the completely contracted state of the clamping plate, the workpiece is not contacted with the outward end of the clamping plate.
Furthermore, the thread connecting sleeve is a sleeve with internal threads, external threads are respectively arranged on the cylinder working shaft and the pull rod, and two ends of the thread connecting sleeve are respectively in threaded connection with the cylinder working shaft and the pull rod.
The invention has the beneficial effects that: a reverse pneumatic clamping jaw device for locking a workpiece is formed by machining and molding a modular frame structure, reserves a space needing avoiding, and is convenient to mount, dismount and maintain; the positioning lug 23 can skillfully realize radial positioning of the circular hole, and the special structure of the clamping jaw can be radially expanded and recovered and can also be axially extended and shortened, so that the workpiece can be axially compressed; the matching structure of the pull rod and the cylinder can quickly adjust the stroke, so that the device is suitable for processing parts with different plate thicknesses and sizes; the novel plate-shaped workpiece welding device is reasonable in structure, has the advantages of convenience in use, accuracy in positioning and the like, and effectively solves the problem that the concentricity of two plate-shaped workpieces with round holes is difficult to guarantee during machining or welding.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall construction of a reverse pneumatic jaw assembly for locking a workpiece according to the present invention;
FIG. 2 is a schematic view of a cylinder arrangement of a reverse pneumatic clamping jaw assembly for locking a workpiece according to the present invention;
FIG. 3 is a schematic view of the construction of a retaining sleeve of a reverse pneumatic clamping jaw arrangement for retaining a workpiece according to the present invention;
FIG. 4 is a schematic view of a jaw configuration of a reverse pneumatic jaw apparatus for locking a workpiece according to the present invention;
fig. 5 is a schematic view of the connection of a reverse pneumatic clamping jaw device for locking a workpiece according to the invention to the workpiece.
The scores in the figures are as follows:
1. the device comprises an air cylinder, 11, a threaded connecting sleeve, 2, a fixing sleeve, 21, a connecting sleeve, 22, a connecting platform, 23, a positioning lug, 24, a clamping groove, 25, a guide inclined plane, 26, a connecting hole, 27, an installation through groove, 3, a clamping jaw, 31, a pull rod, 32, a fan-shaped connecting plate, 33, a clamping plate, 34, a hinged plate, 35, an I-shaped connecting piece, 36, a connecting lug, 4, workpieces A and 5 and a workpiece B.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
A reverse pneumatic clamping jaw device for locking a workpiece, as shown in fig. 1 to 5, comprises a cylinder 1, a fixed sleeve 2 and a clamping jaw 3.
As shown in fig. 2, the air cylinder 1 is connected with an external air pump, the external air pump is controlled by a controller to open and close, and a threaded connecting sleeve 11 is arranged on a working shaft of the air cylinder 1.
As shown in fig. 3, the fixing sleeve 2 comprises a connecting sleeve 21, a connecting platform 22 and a positioning lug 23; the opening of the connecting sleeve 21 is arranged towards the upper end and the lower end, the lower end of the connecting sleeve 21 is fixedly connected with the shell of the cylinder 1, for example, the connecting sleeve is welded or in threaded connection, and the working shaft of the cylinder 1 and the threaded connecting sleeve 11 extend into the inner cavity of the connecting sleeve 21 from the opening at the lower end of the connecting sleeve 21.
In one embodiment, the inner cavity of the connecting sleeve 21 is a circular structure, and the inner cavity of the connecting sleeve 21, the working shaft of the cylinder 1 and the middle circular hole of the connecting platform 22 are arranged on the same central axis.
In another possible embodiment, the inner cavity of the connecting sleeve 21 may also be a structure other than a circle, and it is only necessary that the working shaft of the cylinder 1 and the central circular hole of the connecting platform 22 are arranged with a common central axis, and the working shaft of the cylinder 1 is not in contact with the inner cavity wall of the connecting sleeve 21.
As shown in fig. 3, the connection platform 22 has a circular ring structure, the lower end surface of the connection platform 22 is fixedly connected to the upper end of the connection sleeve 21, and the middle circular hole of the connection platform 22 is aligned and communicated with the upper end opening of the connection sleeve 21, that is, the middle circular hole edge of the connection platform 22 is fixedly connected to the upper end opening edge of the connection sleeve 21, such as by bolting or welding.
As shown in fig. 3, the positioning protrusions 23 are uniformly arranged around the edge of the middle through hole of the connecting platform 22, the outward side surfaces of the positioning protrusions 23 are provided with guiding inclined planes 25, and clamping grooves 24 are uniformly arranged between the positioning protrusions 23.
As shown in fig. 4, the clamping jaw 3 comprises a pull rod 31, a fan-shaped connecting plate 32, a clamping plate 33, a hinge plate 34 and an i-shaped connecting piece 35; the pull rod 31 is vertically arranged, and the lower end of the pull rod 31 extends into the inner cavity of the connecting sleeve 21 from the upper end opening of the connecting sleeve 21 and is fixedly connected with the cylinder working shaft through the threaded connecting sleeve 11; the pull rod 31 is a cylindrical structure, and the upper end of the pull rod 31 is provided with a connecting convex block 36 in a radial shape by taking the central axis of the pull rod 31 as the center.
As shown in fig. 1 or fig. 5, the clamping plates 33 are radially arranged with the center of the circular hole in the middle of the connecting platform 22 as the center, and the clamping plates 33 are aligned with the slots 24; one inward end of the clamping plate 33 is hinged with one end of an I-shaped connecting piece 35, and the other end of the I-shaped connecting piece 35 is hinged with a connecting lug 36; the middle part of the clamping plate 33 is hinged with one end of the hinged plate 34, the other end of the hinged plate 34 is fixedly connected with the fan-shaped connecting plate 32, and the fan-shaped connecting plate 32 is fixedly connected with the bottom of the clamping groove 24 through a bolt.
In one embodiment, the side wall of the connecting sleeve 21 is provided with a mounting through groove 27 for facilitating the connection and installation of the pull rod 31 and the working shaft of the air cylinder 1, and the mounting through groove 27 is communicated with the inner cavity of the connecting sleeve 21.
In one embodiment, the outward side surface of the positioning lug 23 and the guide inclined surface 25 are both arc structures, and the arc structures are abutted with round holes on the workpiece a4 and the workpiece B5, so that radial positioning of the two workpieces is realized, and concentricity is ensured.
In one embodiment, the connecting platform 22 is uniformly provided with a plurality of connecting holes 26 for connecting with external devices.
In one embodiment, when the clamping plate 33 is fully retracted, the clamping plate 33 is fully located in the clamping groove 24, i.e. when the positioning protrusions 23 penetrate through the holes on the workpiece in the fully retracted state of the clamping plate 33, the workpiece does not contact with the outward end of the clamping plate 33.
In one embodiment, the threaded connection sleeve 11 is a sleeve with an internal thread, the working shaft of the cylinder 1 and the pull rod 31 are respectively provided with an external thread, and two ends of the threaded connection sleeve 11 are respectively in threaded connection with the working shaft of the cylinder 1 and the pull rod 31.
Outside air pump drives cylinder 1, and the working shaft of cylinder 1 passes through pull rod 31 and drives cardboard 33 one end inwards to drive cardboard 33 one end outwards and stretch out or retract draw-in groove 24, cardboard 33 flexible in-process produces the displacement radially and axially, can compress tightly the work piece when cardboard 33 one end outwards just moves down, thereby realizes the axial positioning of work piece.
When the clamping jaw type workpiece fixture is used, as shown in fig. 5, the clamping plate 33 of the clamping jaw 3 is retracted into the clamping groove 24, the round holes in the workpiece A4 and the workpiece B5 are roughly aligned and overlapped, the positioning lug 23 penetrates through the round holes of the two workpieces, the outward arc-shaped side surface of the positioning lug 23 is abutted and positioned with the round holes of the two workpieces, then the clamping plate 33 of the clamping jaw 3 extends out to press the workpiece A4 and the workpiece B5, the lower end surface of the workpiece A4 is abutted with the upper end surface of the connecting platform 22, and the upper end surface of the workpiece B5 is abutted with the outward end of the clamping plate 33, so that axial and radial positioning is realized, and the concentricity of the two.
The reverse pneumatic clamping jaw device for locking the workpiece is reasonable in structure, adopts a modular frame structure, is machined and formed, reserves a space needing avoiding, and is convenient to mount, dismount and maintain; the positioning lug can skillfully realize radial positioning of the circular hole, and the special structure of the clamping jaw can be radially expanded and recovered and can also be axially extended and shortened, so that the workpiece can be axially compressed; the matching structure of the pull rod and the cylinder can quickly adjust the stroke, so that the device is suitable for processing parts with different plate thicknesses and sizes; the novel plate-shaped workpiece welding device is reasonable in structure, has the advantages of convenience in use, accuracy in positioning and the like, and effectively solves the problem that the concentricity of two plate-shaped workpieces with round holes is difficult to guarantee during machining or welding.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A reverse pneumatic clamping jaw device for locking a workpiece is characterized in that: the clamping device comprises a cylinder (1), a fixed sleeve (2) and a clamping jaw (3), wherein a working shaft of the cylinder (1) is provided with a threaded connecting sleeve (11); the fixing sleeve (2) comprises a connecting sleeve (21), a connecting platform (22) and a positioning lug (23);
the opening of the connecting sleeve (21) is arranged towards the upper end and the lower end, the lower end of the connecting sleeve (21) is fixedly connected with the shell of the air cylinder (1), and the working shaft of the air cylinder (1) and the threaded connecting sleeve (11) extend into the inner cavity of the connecting sleeve (21) from the opening at the lower end of the connecting sleeve (21);
the connecting platform (22) is of a circular structure, the lower end face of the connecting platform (22) is fixedly connected with the upper end of the connecting sleeve (21), and a middle round hole of the connecting platform (22) is communicated with an upper end opening of the connecting sleeve (21) in an aligned mode;
the positioning lugs (23) are uniformly arranged around the edge of the middle through hole of the connecting platform (22), the outward side surfaces of the positioning lugs (23) are provided with guide inclined planes (25), and clamping grooves (24) are uniformly arranged among the positioning lugs (23);
the clamping jaw (3) comprises a pull rod (31), a sector connecting plate (32), a clamping plate (33), a hinge plate (34) and an I-shaped connecting piece (35); the pull rod (31) is vertically arranged, and the lower end of the pull rod (31) extends into the inner cavity of the connecting sleeve (21) from the upper end opening of the connecting sleeve (21) and is fixedly connected with the working shaft of the cylinder through a threaded connecting sleeve (11); the upper end of the pull rod (31) is provided with a connecting lug (36) in a radial shape;
the clamping plates (33) are radially arranged by taking the circle center of a circular hole in the middle of the connecting platform (22) as the center, and the clamping plates (33) are aligned with the clamping grooves (24); the inward end of the clamping plate (33) is hinged with one end of an I-shaped connecting piece (35), and the other end of the I-shaped connecting piece (35) is hinged with the connecting bump (36); the middle of the clamping plate (33) is hinged with one end of the hinged plate (34), the other end of the hinged plate (34) is fixedly connected with the fan-shaped connecting plate (32), and the fan-shaped connecting plate (32) is fixedly connected with the bottom of the clamping groove (24) through a bolt.
2. A reverse pneumatic jaw assembly for locking a workpiece according to claim 1, characterised in that: the side wall of the connecting sleeve (21) is provided with an installation through groove (27), and the installation through groove (27) is communicated with the inner cavity of the connecting sleeve (21).
3. A reverse pneumatic jaw assembly for locking a workpiece according to claim 1, characterised in that: the inner cavity of the connecting sleeve (21) is of a circular structure, and the inner cavity of the connecting sleeve (21) and the middle round hole of the connecting platform (22) are arranged on the same central axis.
4. A reverse pneumatic jaw assembly for locking a workpiece according to claim 1, characterised in that: the outward side surface of the positioning lug (23) and the guide inclined surface (25) are both arc-shaped structures.
5. A reverse pneumatic jaw assembly for locking a workpiece according to claim 1, characterised in that: the connecting platform (22) is uniformly provided with a plurality of connecting holes (26) for connecting with external equipment.
6. A reverse pneumatic jaw assembly for locking a workpiece according to claim 1, characterised in that: when the clamping plate (33) is completely contracted, the clamping plate (33) is completely positioned in the clamping groove (24), namely when the positioning lug (23) passes through the hole on the workpiece under the completely contracted state of the clamping plate (33), the workpiece is not contacted with the outward end of the clamping plate (33).
7. A reverse pneumatic jaw assembly for locking a workpiece according to claim 1, characterised in that: the threaded connecting sleeve (11) is a sleeve with internal threads, external threads are arranged on the working shaft of the air cylinder (1) and the pull rod (31) respectively, and two ends of the threaded connecting sleeve (11) are in threaded connection with the working shaft of the air cylinder (1) and the pull rod (31) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911115347.XA CN110936304A (en) | 2019-11-14 | 2019-11-14 | Reverse pneumatic clamping jaw device for locking workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911115347.XA CN110936304A (en) | 2019-11-14 | 2019-11-14 | Reverse pneumatic clamping jaw device for locking workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110936304A true CN110936304A (en) | 2020-03-31 |
Family
ID=69906604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911115347.XA Pending CN110936304A (en) | 2019-11-14 | 2019-11-14 | Reverse pneumatic clamping jaw device for locking workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110936304A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388289A (en) * | 2020-11-20 | 2021-02-23 | 深圳市金凯博自动化测试有限公司 | Automatic clamping and rotating mechanism for disassembling battery core |
-
2019
- 2019-11-14 CN CN201911115347.XA patent/CN110936304A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388289A (en) * | 2020-11-20 | 2021-02-23 | 深圳市金凯博自动化测试有限公司 | Automatic clamping and rotating mechanism for disassembling battery core |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204603903U (en) | A kind of self-centering unit and fixture of hub lathe | |
| CN102069207A (en) | Device capable of elastically clamping two ends of long hole | |
| CN201913265U (en) | Elastic clamping device for two ends of long hole | |
| CN219881338U (en) | Special fixture for turning excircle of engine cylinder body | |
| CN112276258A (en) | Workpiece clamp on gear scraping machine | |
| CN113664569A (en) | Thin-wall cylindrical part outer surface machining clamp | |
| CN110936304A (en) | Reverse pneumatic clamping jaw device for locking workpiece | |
| CN211466064U (en) | Reverse pneumatic clamping jaw device for locking workpiece | |
| CN210307310U (en) | Grinding machine chuck of quick centering | |
| CN110744322A (en) | Linkage type clamping mechanism and linkage clamping method | |
| CN103240631A (en) | Fixture for curved surface cavity workpiece boring | |
| CN105798346B (en) | A kind of circular bar clamping device | |
| CN212145529U (en) | Clutch housing milling flutes auxiliary device | |
| CN210358872U (en) | Stamping combined die | |
| CN106271715A (en) | A kind of annular element stationary fixture | |
| CN110802139B (en) | Plastic roundness correction device | |
| CN110773777B (en) | Drill jig for coulter gear gearbox | |
| CN205551511U (en) | Circular bar stock clamping device | |
| CN219901103U (en) | Positioning fixture for boring cylinder sleeve | |
| CN211053145U (en) | Linkage type clamping mechanism | |
| CN212885302U (en) | Quick positioner of slotting machine processing taper hole spline | |
| CN217493503U (en) | Ejector rod seat and vertical milling machine workbench | |
| CN220218064U (en) | Manual self-centering vice | |
| CN115213842B (en) | Radial plunger pump connecting rod cambered surface machining clamp and assembly method thereof | |
| CN216706803U (en) | Automatic centering type tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |