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Device and method for processing PBX (polymer bonded explosive) composite containing hard foreign material

A technology of composite materials and foreign objects, which is used in milling machines, metal processing equipment, workpieces, etc., can solve the problems of workpiece scrap, economic loss, affecting product surface, etc., and achieve high yield, high economic value, and high cutting speed. Effect

Pending Publication Date: 2019-09-06
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Turning is a typical continuous cutting. During the cutting process, the tool tip and the workpiece are always in a cutting contact state. Therefore, hard particles are more likely to adhere to the cutting edge and are not easy to fall off. In severe cases, a ring of a certain width is formed on the surface of the workpiece. Groove marks are clearly visible, affecting the surface of the product. In severe cases, the workpiece will be scrapped, resulting in huge economic losses.

Method used

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  • Device and method for processing PBX (polymer bonded explosive) composite containing hard foreign material
  • Device and method for processing PBX (polymer bonded explosive) composite containing hard foreign material
  • Device and method for processing PBX (polymer bonded explosive) composite containing hard foreign material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] like figure 1 As shown, a device for processing PBX composite materials containing hard foreign matter, including tool holder 1, connection box 2, spindle jacket 3, electric spindle 4 and ball end milling cutter 5, tool holder 1 is a transition connection structure, the top of the tool handle 1 is fixedly connected to the Z-axis ram of the CNC vertical lathe, the bottom of the tool handle 1 is fixedly connected to the connection box 2, the spindle jacket 3 is set in the connection box 2, and the bottom of the connection box 2 is set There is a through hole, the electric spindle 4 passes through the hole and is set on the spindle jacket 3, the ball end milling cutter 5 is set outside the connection box 2 and is fixedly connected with the electric spindle 4, in this embodiment, the electric spindle 4 is set by a spring clip Clamp ball end milling cutter5. In this embodiment, the electric spindle 4 is selected from the HF 80.14S 15CPS type electric spindle 4 of the Swiss ...

Embodiment 2

[0048] The device adopted in this embodiment is the same as that of embodiment 1, so it is not repeated here, and this embodiment mainly sets forth the difference of the processing method:

[0049] A method for processing PBX composite materials containing hard foreign matter, including the above-mentioned device, the specific steps are as follows:

[0050] Step 1: Clamping: Fix the tool handle 1 on the Z-axis ram, and screw the pre-assembled connection box 2, spindle jacket 3, electric spindle 4 and ball end milling cutter 5 to the tool handle 1 through the connection box 2 Above; the tool diameter of the ball-end milling cutter 5 is Φ12 mm; the number of cutting edges of the ball-end milling cutter 5 is 12, and the helix angle of the ball-end milling cutter 5 is 30°.

[0051] Step 2: Cutting: Start the electric spindle 4, so that the ball end milling cutter 5 rotates under the action of the electric spindle 4, and then start the CNC vertical lathe. On the one hand, the ball ...

Embodiment 3

[0053] The device adopted in this embodiment is the same as that of embodiment 1, so it is not repeated here, and this embodiment mainly sets forth the difference of the processing method:

[0054] A method for processing PBX composite materials containing hard foreign matter, including the above-mentioned device, the specific steps are as follows:

[0055] Step 1: Clamping: Fix the tool handle 1 on the Z-axis ram, and screw the pre-assembled connection box 2, spindle jacket 3, electric spindle 4 and ball end milling cutter 5 to the tool handle 1 through the connection box 2 Above; the tool diameter of the ball-end milling cutter 5 is Φ16 mm; the number of blades of the ball-end milling cutter 5 is 11, and the helix angle of the ball-end milling cutter 5 is 30°.

[0056] Step 2: Cutting: Start the electric spindle 4, so that the ball end milling cutter 5 rotates under the action of the electric spindle 4, and then start the CNC vertical lathe. On the one hand, the ball end mil...

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Abstract

The invention discloses a device and a method for processing a PBX (polymer bonded explosive) composite containing hard foreign material, and belongs to the composite machining technology field. The device and the method for processing the PBX composite containing the hard foreign material solve the annular groove mark problem caused in the cutting process of PBX containing hard foreign matters inthe prior art. The device for processing the PBX composite containing the hard foreign material comprises a cutter handle, a connection box, a main shaft clamp sleeve, an electric main shaft and a ball-end mill cutter, wherein the top of the cutter handle is fixedly connected onto a Z-axis ram of a numerical control vertical lathe, the bottom of the cutter handle is fixedly connected with the connection box, the main shaft clamp sleeve is arranged in the connection box, a via hole is formed in the bottom of the connection box, the electric main shaft runs through the via hole and is arrangedon the main shaft clamp sleeve, and the ball-end mill cutter is arranged on the exterior of the connection box and fixedly connected with the electric main shaft.

Description

technical field [0001] The invention relates to the technical field of composite material machining, and more specifically relates to a device and method for processing PBX composite materials containing hard foreign matter. Background technique [0002] Polymer Bonded Explosive (PBX) is a composite material filled with hard and brittle high-energy explosive particles and viscoelastic binder. It has excellent safety performance and energy performance, so it is widely used in the weapon industry. [0003] Turning is one of the processing methods of PBX composite materials, which has the advantages of high processing efficiency and good surface quality. However, at present, some hard particles, such as iron, whose hardness is much higher than that of the base material are often mixed in the workpiece raw materials. Since the particle size and shape of the hard foreign matter are similar to those of explosive particles, it is generally difficult to completely remove them. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00B23C9/00
CPCB23C3/00B23C9/00B23C2226/27
Inventor 齐晓宁刘维习庆邓伟
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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