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Automatic cold hole expansion equipment based on numerical control machine tool and using method of automatic cold hole expansion equipment

A CNC machine tool and automatic technology, applied in the direction of stamping machines, presses, manufacturing tools, etc., can solve the problems of long time consumption, low efficiency, and inability to effectively guarantee the quality of reaming, and achieve wide application range, simple transmission structure, and eliminate long-lasting effect

Inactive Publication Date: 2021-10-08
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of long time consumption and low efficiency in the cold extrusion of parts in the prior art, and the quality of the reaming cannot be effectively guaranteed due to human factors. Extrusion reaming equipment to improve the work efficiency and quality of cold extrusion reaming process

Method used

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  • Automatic cold hole expansion equipment based on numerical control machine tool and using method of automatic cold hole expansion equipment
  • Automatic cold hole expansion equipment based on numerical control machine tool and using method of automatic cold hole expansion equipment
  • Automatic cold hole expansion equipment based on numerical control machine tool and using method of automatic cold hole expansion equipment

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Embodiment 1

[0029] like figure 1 As shown, the invention discloses an automatic cold reaming device based on a numerical control machine tool, which is mainly used for cold extrusion reaming of aircraft parts. The equipment includes a casing, a transmission mechanism arranged in the casing and an extruding rod 5 for cold extrusion. The transmission mechanism and the extruding rod 5 are arranged side by side and parallel inside the housing.

[0030] The transmission mechanism includes a lead screw 3, a nut 10 and a bearing, the bearing is fixedly arranged, the upper and lower ends of the lead screw 3 are rotationally connected with the bearing, and the upper end of the lead screw 3 is fixedly connected with the tool holder 9 of the machine tool through threads; the nut 10 is fixedly connected to the On the lead screw 3; a slider 4 is fixedly connected to one side of the nut 10, and a guide sleeve 12 is provided at the bottom of the housing. , The lower end of the extrusion rod 5 is conne...

Embodiment 2

[0039] This embodiment provides a method for using an automatic cold reaming device based on a numerically controlled machine tool. The automatic cold reaming device includes a housing, a screw 3 and a nut 10 mechanism arranged in the housing, and an extrusion rod 5 for cold extrusion ;

[0040] Install the nut 10 mechanism of the lead screw 3 in the casing, the bearings are installed on the polished rods at both ends of the lead screw 3, and are positioned by the shaft shoulder on the lead screw 3 and the retaining ring in the casing; the slider 4 is installed on the lead screw by screws 3 On the nut 10 of the nut 10 mechanism, the slider 4 slides on the guide rail of the housing; the extrusion rod 5 used for cold extrusion is installed on the slider 4 through a thread pair; The shell is fixed on the main shaft of the machine tool, and the tool sleeve 9 on the main shaft is installed on the upper end of the lead screw 3 through 10 pairs of nuts; through the rotation of the ma...

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Abstract

The invention discloses automatic cold hole expansion equipment based on a numerical control machine tool and a using method of the automatic cold hole expansion equipment, and belongs to the field of machining. The automatic cold hole expansion equipment comprises a shell, a transmission mechanism arranged in the shell and an extrusion rod; the transmission mechanism comprises a lead screw, a nut and fixedly-arranged bearings, the upper end and the lower end of the lead screw are rotationally connected with the bearings, and the upper end of the lead screw is fixedly connected with a cutter sleeve of the machine tool; the nut is fixedly connected to the lead screw; and one side of the nut is fixedly connected with a sliding block, a guide sleeve is arranged at the bottom of the shell, the upper end of the extrusion rod is fixedly connected with the sliding block, the lower end of the extrusion rod penetrates through the guide sleeve and extends out of the shell, the lower end of the extrusion rod is connected with a slotting lining used for cold extrusion, and the cutter sleeve drives the lead screw to rotate, so that the nut drives the extrusion rod on the sliding block to do linear motion in an up-down reciprocating manner. According to the equipment, the displacement amount of the extrusion rod can be accurately controlled through an NC instruction in a numerical control system, the device size is small, the transmission structure is simple, the application range is wide, and hole expansion of different hole diameters can be carried out by replacing the expansion rod with extrusion rods with different ends.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to an automatic cold reaming device based on a numerical control machine tool and a method for using the same. Background technique [0002] The cold extrusion process with slotted bushing is a process technology used to improve the service life of aircraft structural parts, which is widely used in the field of aviation manufacturing and maintenance. By inserting the extrusion tool equipped with a slotted bushing into the hole of the part, the inner hole is plastically expanded, and a circle of residual compressive stress layer is formed around the hole, which can reduce the tensile stress on the part and improve the strength of the stressed part. fatigue strength and prolong service life. In the actual operation process, the operator usually manually reams the hole with a hydraulic extrusion gun. This method has the problems of long time consumption and low efficiency, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D31/04B30B1/18
CPCB21D31/04B30B1/18
Inventor 潘崇恺李鑫位申申夏远猛李颖贾永峰张锐扬昌广春
Owner CHENGDU AIRCRAFT INDUSTRY GROUP