The present invention relates to a fixture for machining equipment, and more particularly to an auto-positioning hydraulic pneumatic fixture.
In automatic machining process, it is troublesome to fix a workpiece easily and securely. For example, when fixing or removing the workpiece manually, the workpiece cannot be fixed with even exert force. When the workpiece is fixed with insufficient exert force, the workpiece removes from the fixture. When fixing the workpiece with excessive exert force, the workpiece is deformed. To overcome aforesaid-mentioned problem, the fixture is driven pneumatically or hydraulically via a medium.
To machine the workpiece accurately, at least one movable positioning unit is arranged on the fixture so as to fix the workpiece on the fixture, thus machining the workpiece. However, before machining the workpiece, the at least one movable positioning unit has to be removed. When the at least one movable positioning unit is not removed before machining the workpiece, it interferes the machining process.
In addition, it is time-consuming to align the fixture with the at least one movable positioning unit, thus increasing fabrication cost.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary aspect of the present invention is to provide an auto-positioning hydraulic pneumatic fixture which contains a respective one of multiple positioning modules retracted into the fixing module after clamping the respective one workpiece, thus avoiding the obstruction of machining process.
Another aspect of the present invention is to provide an auto-positioning hydraulic pneumatic fixture which is linked with the machining equipment so as to be driven pneumatically or hydraulically easily.
To obtain above-mentioned aspects, an auto-positioning hydraulic pneumatic fixture provided by the present invention contains: a base and at least one locking device.
The base is mounted on machining equipment and includes at least one installation zone, and a respective one of the at least one installation zone is configured to fix a respective one of the at least one locking device.
The respective one locking device is configured to clamp a respective one of at least one workpiece, and the respective one locking device includes a fixing module and a clamping module. The fixing module has a body, a connection segment, and an affix portion. The body is configured to accommodate the connection segment and the affix portion.
The connection segment is arranged on a bottom of the body and is connected in the respective one installation zone, and the respective one locking device is fixed on the base by ways of multiple coupling elements.
The clamping module of the respective one locking device includes a pair of clamp units, and a respective one of the pair of clamp units has a clamping face. The clamping module further includes a positioning bolt extending from a bottom of the respective one clamp unit and inserted into the affix portion. The clamping module is secured on the affix portion, and the affix portion has a defining groove configured to accommodate the respective one clamp unit so as to fix the respective one workpiece. The affix portion has a linear slot so that the affix portion slides along the linear slot to actuate the respective one clamp unit to clamp the respective one workpiece, and the respective one clamp unit moves along of the affix portion of the fixing module linearly. The auto-positioning hydraulic pneumatic fixture further contains: multiple pistons, multiple positioning modules, and multiple platforms. A respective one of the multiple pistons, the multiple positioning modules, and the multiple platforms is fixed in the respective one installation zone, a first end of the respective one piston is fixed in the respective one installation zone, and a second end of the respective one piston is connected with a respective one of the multiple positioning modules. The respective one piston moves linearly in the respective one installation zone via a medium.
The body has at least one tilted rail configured to move the respective one positioning module linearly.
The respective one positioning module has a mounting unit and at least one locating unit, the mounting unit is configured to fix the at least one locating unit which is connected with the respective one piston. The mounting unit has two oblique faces formed on two sides thereof respectively so as to push the affix portion, and the mounting unit has multiple fringes configured to move the mounting unit along the at least one tilted rail of the body, such that the respective one positioning module is actuated by the respective one piston to move linearly along the at least one tilted rail, and the at least one locating unit extends out of or retracts into the fixing module of the respective one locking device. The at least one locating unit of the respective one positioning module is configured to position the respective one workpiece.
The respective one platform is configured to fix the respective one workpiece, the respective one platform is formed in a plate shape, and each of two ends of the respective one platform is clamped by the respective one clamp unit of the clamping module. The respective one platform includes at least one orifice, and a respective one of the at least one orifice is configured to extend a respective one of the at least one locating unit.
When unclamping the respective one workpiece, the respective one clamp unit of the clamping module is pushed by the mounting unit to extend outward, and the respective one locating unit of the respective one positioning module extends out of the respective one orifice so that the respective one workpiece is fixed.
When clamping the respective one workpiece, the clamping module is not pushed by the mounting unit and retracts inward to clamp the respective one workpiece and the respective one platform, and the respective one locating unit of the respective one positioning module is actuated by the respective one piston to retract into the fixing module.
Preferably, the respective one locating unit has a guide end.
Preferably, the medium is compressed air configured to push the respective one piston to move in the respective one installation zone.
Preferably, the medium is hydraulic oil configured to push the respective one piston to move in the respective one installation zone.
Preferably, the clamping module clamps or unclamps the respective one workpiece by ways of the medium.
Preferably, the clamping module is a vise or a chuck driven by the medium.
With reference to
Referring to
As shown in
The connection segment 212 is arranged on a bottom of the body 211 and is connected in the respective one installation zone 11, and the respective one locking device 20 is fixed on the base 10 by ways of multiple coupling elements.
As shown in
As illustrated
With reference to
Referring to
As shown in
Referring to
With reference to
As shown in
Accordingly, the auto-positioning hydraulic pneumatic fixture of the present invention has advantages as follows:
1. The respective one positioning module 23 is retracted into the fixing module 21 after clamping the respective one workpiece W, thus avoiding the obstruction of machining process.
2. The auto-positioning hydraulic pneumatic fixture is linked with the machining equipment so as to be driven pneumatically or hydraulically easily.
3. Referring to
4. The clamping module 22 and the multiple positioning modules 23 of the respective one locking device 20 are actuated linearly by the respective one piston 12 to clamp or unclamp the respective one workpiece W, thus simplifying clamping operation.
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
Number | Name | Date | Kind |
---|---|---|---|
5056766 | Engibarov | Oct 1991 | A |
5060920 | Engibarov | Oct 1991 | A |
6158728 | Smith | Dec 2000 | A |
20210299821 | Chen | Sep 2021 | A1 |
Number | Date | Country | |
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20210299821 A1 | Sep 2021 | US |