CN216398089U - Pneumatic quick pretension drilling machine frock of valve drilling - Google Patents

Abstract

Pneumatic quick pretension drilling machine frock of valve drilling, including two stands and a locating plate, interval arrangement about the equal vertical and of two stands, the locating plate level sets up, two stand lower extreme fixed connection are on the workstation of drilling machine, be equipped with the last perforation that is used for passing two stands on the locating plate, locating plate left side and right side respectively with the upper end of left side stand and the upper end fixed connection of right side stand, be provided with the cylinder that is located between two stands on the workstation of drilling machine, the piston rod of cylinder makes progress perpendicularly and is connected with the pretension dish, be equipped with the lower perforation that is used for passing two stands on the pretension dish. The utility model has scientific principle, simple structure and convenient operation, reduces the labor intensity of operators, greatly improves the working efficiency, is not only used for drilling and processing the valve workpieces, but also can be widely used for drilling and processing other workpieces by a drilling machine.

Description

Pneumatic quick pretension drilling machine frock of valve drilling

Technical Field

The utility model belongs to the technical field of valve manufacturing, and particularly relates to a pneumatic quick pre-tightening drilling machine tool for valve drilling.

Background

At present, a circle of connecting hole on a valve connecting flange is usually processed by a drilling machine, as shown in fig. 1, a valve workpiece is clamped by a pressing plate type manual pressing screw group tool, the pressing plate type manual pressing screw group comprises two studs 1 and a pressing plate 2, the lower end of the stud 1 is connected with a workbench 3 of the drilling machine, a through hole for penetrating through the two studs 1 is formed in the pressing plate 2, a nut 5 is connected to the upper end of the stud 1 through a thread, the valve workpiece 4 is placed on the workbench 3 of the drilling machine before drilling, the pressing plate 2 is placed on the valve workpiece 4, an operator rotates the nut 5 through a spanner to press the valve workpiece 4 through the pressing plate 2, and the valve workpiece 4 cannot rotate when drilling; after a drilling is completed, the cantilever 6 of the drilling machine is rotated, the drill bit 7 is driven to rotate, the cantilever 6 is locked after the drill bit 7 reaches a proper position, the drill bit 7 drills other holes in the valve workpiece 4 until all the drilled holes are drilled, the nut 5 on the stud 1 is loosened by using a manual wrench after all the drilled holes are drilled, the valve workpiece 4 is taken out by moving the pressing plate 2, the drilling process is completed, the time for loosening and tightening the valve workpiece 4 in the process needs 1-2 minutes, meanwhile, certain physical power of an operator needs to be consumed in the pre-tightening process, in addition, when the valve workpiece 4 is not placed on the workbench 3, the pressing plate 2 easily slides downwards along the two studs 1, therefore, when the valve workpiece 4 is placed on the workbench 3, the pressing plate 2 needs to be moved upwards to provide sufficient height for placing the valve workpiece 4 on the workbench 3, and the operation is inconvenient. Therefore, the tool with the structure has the defects of high labor intensity, low working efficiency, inconvenience in operation and the like.

SUMMERY OF THE UTILITY MODEL

The pneumatic quick pre-tightening drilling machine tool for the valve drilling is small in labor intensity, convenient and quick to operate and high in tool efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme: pneumatic quick pretension drilling machine frock of valve drilling, including two stands and a locating plate, interval arrangement about the equal vertical and of two stands, the locating plate level sets up, two stand lower extreme fixed connection are on the workstation of drilling machine, be equipped with the last perforation that is used for passing two stands on the locating plate, locating plate left side and right side respectively with the upper end of left side stand and the upper end fixed connection of right side stand, be provided with the cylinder that is located between two stands on the workstation of drilling machine, the piston rod of cylinder is perpendicular upwards and be connected with the pretension dish, the pretension dish is located locating plate below and is on a parallel with the locating plate, be equipped with the lower perforation that is used for passing two stands on the pretension dish, pretension dish upper surface is equipped with the stopper that is used for injecing the valve work piece and places the position.

The outside of stand upper end is equipped with the external screw thread, and threaded connection has last lock nut and lock nut down on the external screw thread, goes up lock nut lower extreme face and locating plate upper surface crimping, and lock nut upper end and locating plate lower surface crimping down.

The cylinder includes the cylinder body, a piston, piston rod and pneumatic foot switch, the slip is equipped with the piston in the cylinder body, the piston separates cylinder body inner space for last cavity and lower cavity, the piston rod lower extreme is connected in piston up end center department, the piston rod upper end passes the lower surface center fixed connection that the last cavity stretched out cylinder body and pretension dish, the last cavity of cylinder body is connected with pneumatic foot switch through first trachea, the lower cavity of cylinder body is connected with pneumatic foot switch through the second trachea, pneumatic foot switch's air inlet is connected with high-pressure air source inlet tube.

By adopting the technical scheme, the utility model adds a pneumatic jacking clamping device compared with the original tool, namely, a cylinder is fixed on a workbench of a drilling machine, the upper end part of a piston rod of the cylinder is horizontally connected with a pre-tightening disc, a valve workpiece is placed on the upper part of the pre-tightening disc, a positioning plate is formed by fixedly connecting an upper locking nut and a lower locking nut with an upright post, the height of the pneumatic jacking clamping device is adjusted to be fixed and pre-tightened when the pneumatic jacking clamping device works effectively, an external high-pressure gas source is connected with a pneumatic foot switch through a high-pressure gas source inlet pipe, the pneumatic foot switch divides the high-pressure gas to control the up and down motion of a piston in a cylinder body, a foot steps on the pneumatic foot switch, a second gas pipe enters the lower cavity of the cylinder body, the upper cavity of the cylinder body is deflated through a first gas pipe, the piston moves upwards, the piston rod pushes the pre-tightening disc and the valve workpiece to move upwards, a connecting flange on the upper end part of the valve workpiece props against the lower surface of the positioning plate, the workpiece is clamped between the positioning plate and the pre-tightening plate, after drilling is completed, the pneumatic foot switch is treaded again, the first air pipe enters air into the upper cavity of the cylinder body, the lower cavity of the cylinder body is deflated through the second air pipe, the piston moves downwards, the piston rod drives the pre-tightening plate and the valve workpiece to move downwards, the connecting flange at the upper end of the valve workpiece is separated from the lower surface of the positioning plate, the valve workpiece is taken down from the pre-tightening plate, then the next valve workpiece to be machined is placed on the pre-tightening plate, the pneumatic foot switch is continuously treaded, and the clamping action is repeated. The pre-tightening disc is used for vertically moving a piston rod of the air cylinder to clamp and loosen a valve workpiece, the time for tightening and loosening the valve workpiece in the process is only required to be completed within 3-5 seconds, meanwhile, certain physical power of an operator is not required to be consumed in the pre-tightening process, certain labor intensity is reduced, and meanwhile, the efficiency of machining in the drilling process of the valve workpiece is improved.

The pre-tightening disc moves up and down along the two stand columns, and the two stand columns play a role in guiding and ensure that the pre-tightening disc does not rotate.

The locating plate is through last lock nut and lock nut fixed connection down on the stand, and the dismouting of not only being convenient for is connected reliably, conveniently adjusts the height of locating plate moreover.

In conclusion, the valve drilling machine is scientific in principle, simple in structure and convenient to operate, reduces the labor intensity of operators, greatly improves the working efficiency, and can be widely used for drilling machining of valve workpieces and other workpieces by a drilling machine.

Drawings

FIG. 1 is a schematic structural diagram of a pressing plate type manual stud group pressing tool in the prior art;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a top view of fig. 2.

Detailed Description

As shown in fig. 2 and 3, the pneumatic quick pre-tightening drilling machine tool for valve drilling comprises two upright posts 10 and a positioning plate 11, wherein the two upright posts 10 are vertically arranged and are arranged at intervals in the left-right direction, the positioning plate 11 is horizontally arranged, the lower ends of the two upright posts 10 are fixedly connected to a workbench 3 of the drilling machine, upper through holes for penetrating the two upright posts 10 are formed in the positioning plate 11, the left side and the right side of the positioning plate 11 are fixedly connected with the upper end portion of the upright post 10 on the left side and the upper end portion of the upright post 10 on the right side respectively, an air cylinder positioned between the two upright posts 10 is arranged on the workbench 3 of the drilling machine, a piston rod 12 of the air cylinder is vertically upwards and is connected with a pre-tightening disc 13, the pre-tightening disc 13 is positioned below the positioning plate 11 and is parallel to the positioning plate 11, lower through holes for penetrating the two upright posts 10 are formed in the pre-tightening disc 13, and a limiting block for limiting the placement position of a valve workpiece 4 is arranged on the upper surface of the pre-tightening disc 13.

The outside of stand 10 upper end is equipped with the external screw thread, and threaded connection has last lock nut 14 and lower lock nut 15 on the external screw thread, and the terminal surface is pressed connection with locating plate 11 upper surface under the lock nut 14, and 15 upper end of lower lock nut and the lower surface of locating plate 11 are pressed connection.

The air cylinder comprises a cylinder body 16, a piston 17, a piston rod 12 and a pneumatic foot switch 18, the piston 17 is arranged in the cylinder body 16 in a sliding mode, the piston 17 divides the inner space of the cylinder body 16 into an upper cavity and a lower cavity, the lower end of the piston rod 12 is connected to the center of the upper end face of the piston 17, the upper end of the piston rod 12 penetrates through the upper cavity and extends out of the cylinder body 16 to be fixedly connected with the center of the lower surface of the pre-tightening disc 13, the upper cavity of the cylinder body 16 is connected with the pneumatic foot switch 18 through a first air pipe 19, the lower cavity of the cylinder body 16 is connected with the pneumatic foot switch 18 through a second air pipe 20, and an air inlet of the pneumatic foot switch 18 is connected with a high-pressure air source inlet pipe 21.

Compared with the original tool, the utility model adds a pneumatic jacking clamping device, namely, a cylinder is fixed on a workbench 3 of a drilling machine, the upper end part of a piston rod 12 of the cylinder is horizontally connected with a pre-tightening disc 13, a valve workpiece 4 is placed on the upper part of the pre-tightening disc 13, a positioning plate 11 is that an upper locking nut 14 and a lower locking nut 15 are fixedly connected with an upright post 10 and adjusted to the height for fixing and pre-tightening when the pneumatic jacking clamping device works effectively, an external high-pressure gas source is connected with a pneumatic foot switch 18 through a high-pressure gas source inlet pipe 21, the pneumatic foot switch 18 shunts high-pressure gas to control the up-and-down motion of a piston 17 in a cylinder body 16, the pneumatic foot switch 18 is stepped by feet, a second gas pipe 20 admits gas into a lower cavity of the cylinder body 16, the upper cavity of the cylinder body 16 is deflated through a first gas pipe 19, the piston 17 moves upwards, the piston rod 12 pushes the pre-tightening disc 13 and the valve workpiece 4 to move upwards, a connecting flange at the upper end part of the valve workpiece 4 jacks the lower surface of the positioning plate 11, the workpiece is clamped between the positioning plate 11 and the pre-tightening plate 13, after drilling is completed, the pneumatic foot switch 18 is treaded again, the first air pipe 19 enters air into the upper cavity of the cylinder body 16, the lower cavity of the cylinder body 16 is deflated through the second air pipe 20, the piston 17 moves downwards, the piston rod 12 drives the pre-tightening plate 13 and the valve workpiece 4 to move downwards, the connecting flange at the upper end part of the valve workpiece 4 is separated from the lower surface of the positioning plate 11, the valve workpiece 4 is taken down from the pre-tightening plate 13, then the next valve workpiece 4 to be machined is placed on the pre-tightening plate 13, the pneumatic foot switch 18 is treaded continuously, and the clamping action is repeated. The pre-tightening disc 13 is used for vertically moving a piston rod 12 of the air cylinder to clamp and loosen the valve workpiece 4, the time for loosening and tightening the valve workpiece 4 in the process is only 3-5 seconds, certain physical power of an operator is not consumed in the pre-tightening process, certain labor intensity is reduced, and meanwhile, the efficiency of machining in the drilling process of the valve workpiece 4 is improved.

The pre-tightening disc 13 moves up and down along the two upright posts 10, and the two upright posts 10 play a role in guiding to ensure that the pre-tightening disc 13 does not rotate.

The positioning plate 11 is fixedly connected to the upright post 10 through an upper locking nut 14 and a lower locking nut 15, so that the positioning plate is convenient to disassemble and assemble and reliable in connection, and the height of the positioning plate 11 is convenient to adjust.

It is important to note that the pneumatic foot switch 18 of the present invention is commercially available, and the specific structure thereof is conventional and will not be described herein.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (3)

1. Pneumatic quick pretension drilling machine frock of valve drilling, including two stands and a locating plate, interval arrangement about the equal vertical of two stands, the locating plate level sets up, and two stand lower extreme fixed connection are equipped with the last perforation that is used for passing two stands on the locating plate on the workstation of drilling machine, its characterized in that: the left side and the right side of the positioning plate are fixedly connected with the upper end portion of the left side stand column and the upper end portion of the right side stand column respectively, an air cylinder located between the two stand columns is arranged on a workbench of the drilling machine, a piston rod of the air cylinder vertically upwards is connected with a pre-tightening disc, the pre-tightening disc is located below the positioning plate and is parallel to the positioning plate, lower through holes used for penetrating the two stand columns are formed in the pre-tightening disc, and a limiting block used for limiting the placement position of a valve workpiece is arranged on the upper surface of the pre-tightening disc.

2. The pneumatic quick pretension drilling machine tool for valve drilling according to claim 1, characterized in that: the outside of stand upper end is equipped with the external screw thread, and threaded connection has last lock nut and lock nut down on the external screw thread, goes up lock nut lower extreme face and locating plate upper surface crimping, and lock nut upper end and locating plate lower surface crimping down.

3. The pneumatic quick pretension drilling machine tool for valve drilling according to claim 1 or 2, characterized in that: the cylinder includes the cylinder body, a piston, piston rod and pneumatic foot switch, the slip is equipped with the piston in the cylinder body, the piston separates cylinder body inner space for last cavity and lower cavity, the piston rod lower extreme is connected in piston up end center department, the piston rod upper end passes the lower surface center fixed connection that the last cavity stretched out cylinder body and pretension dish, the last cavity of cylinder body is connected with pneumatic foot switch through first trachea, the lower cavity of cylinder body is connected with pneumatic foot switch through the second trachea, pneumatic foot switch's air inlet is connected with high-pressure air source inlet tube.

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