CN104858749A

CN104858749A - CNC (computer numerical control) machine tool applicable to turning of composites

Info

Publication number: CN104858749A
Application number: CN201410339161.3A
Authority: CN
Inventors: 杜正阔; 都瑛娜; 杜泽厚
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-07-13
Filing date: 2014-07-13
Publication date: 2015-08-26

Abstract

The invention provides a CNC (computer numerical control) machine tool which replaces blade turning with abrasive wheel grinding. Abrasive wheels are additionally mounted on high-speed motorized spindles or high-speed high-precision pneumatic grinding heads to replace blades to be used as grinding units, multiple groups of grinding units constitute a complete tool magazine, and CNC two-axis guide rails control feeding and switching stations. High-speed, precise and continuous machining is realized. The abrasive wheels are reasonably matched according to different materials, and the purity required by monocrystalline silicon production and the like can be guaranteed. The whole machine tool is sealed, and dust is filtered in a cycling manner and causes no pollution to the environment. The machine tool has the benefits that according to practices of machining of bolts with two-dimensional carbon-based composite plate strips as well as machining of aircraft brake disks with prefabricated part carbon-based composites, the product purity is high, sizes are precise, the surface quality is high, the product quality completely reaches the international leading level, the production efficiency is high, and no pollution is caused. Comparison tests indicate that the finished product quality completely reaches the international leading level.

Description

A kind of Digit Control Machine Tool that can be used for composite turning processing

Technical field: the present invention relates to a kind of Digit Control Machine Tool can processed for composite turning, be particularly useful for fibre reinforced composites, the particularly turnery processing of the middle-size and small-size part of fibre reinforced carbon carbon material, significantly can improve surface roughness, improve dimensional accuracy, improve the quality of products, reduce waste product, significantly improve output.

Background technology: at present, turnery processing for composite still rests on and uses blade to carry out turning operation, blade abrasion is serious, often there is scared phenomenon in surface of the work, and affects by layers of material, and surface of the work is circle not, no matter how blade improves, also satisfied surface quality cannot be reached, and large owing to cutting strength, often there is waste product.In production process, dust is large in addition, seriously polluted, has harm to human body.There is no the machining of professional lathe for fibre reinforced composites in the world.Particularly for the solution that the turnery processing of space material fibre reinforced carbon carbon material there is no at present.

Summary of the invention: large in order to overcome existing machine-tooled method cutting strength, the deficiency that blemish is large, by putting into practice for many years, the invention provides a kind of CNC Digit Control Machine Tool replacing blade turning with wheel grinding, not only significantly reduce Cutting Force, ensure the success rate of finished product, and thoroughly solve the low defect of manual replacing frock cutting efficiency, adopting high-speed electric main shaft or high-speed, high precision pneumatic grinding head to install emery wheel additional replaces blade as grinding unit, many groups grinding unit composition complete tool storehouse, numerical control two axis rail controls feeding and switches station.Achieve at a high speed, accurate, Continuous maching.Emery wheel is reasonably combined according to material difference, can ensure the degree of purity required for monocrystalline silicon production.Complete machine seals, and dust, through circulating filtration, does not pollute environment.

The invention has the beneficial effects as follows, by the practice to two-dimentional based composite material of carbon plate slitting processing bolt and precast body based composite material of carbon processing aircraft brake sheet, product high purity, precision size, surface quality is high, and product quality is reached the international leading level completely and production effect is high, pollution-free.Reach the international leading level completely through contrast test end product quality.

Accompanying drawing illustrates: below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1: engine lathe is processed

Fig. 2: the surface of the work of engine lathe processing is coarse scared

Fig. 3: engine lathe processing work enlarged drawing, does not reach requirement and poor dimensional precision, cannot meet the demands

Fig. 4: surface of the work grinding

Fig. 5: workpiece surface roughness can reach 0.8-1.6um and to meet design requirement and dimensional accuracy is high, good concentricity

Fig. 6: chamfering

Fig. 7: grinding cylindrical

Fig. 8: block

Fig. 9: threading

Figure 10: arrangement A front view

Figure 11: arrangement A top view

Figure 12: arrangement B front view

Figure 13: arrangement B top view

In scheme arrangement figure: 1: unit head 2: abrasive grinding wheel 3, chuck or dop 4: main spindle box 5: guide rail 6: bed body 7: dust collection 8: workpiece

8	Workpiece	One	Fibre reinforced composites
				7	Dust collection	A set of	Require good seal performance, good dedusting effect
6	Bed body	One	Require highly moderate, good seal performance
				5	Guide rail	X-axis, Y-axis are each a set of	The orbital fashion that lathe is conventional all meets the demands
4	Main spindle box	One	Select the main spindle box that rotating speed is lower
				3	Chuck or dop	One	Select spring chuck or Pneumatic hydraulic dop
2	Abrasive grinding wheel	Use in groups	Silicon wheel material and workpiece match, and granularity is moderate, and concentricity is high, to eliminate vibrations
				1	Unit head	Two or more are 2,3,4,5 years old	High-speed electric main shaft or high-speed, high precision pneumatic grinding head
Sequence number	Title	Quantity	Performance requirement

Detailed description of the invention: in Figure 10, Figure 11, Figure 12 and Figure 13, list lathe lathe A, B two kinds of arrangements, headstock spindle line and N (can be 2,3,4,5) individual abrasive grinding wheel axis are in same plane, this plane is parallel to track (5) plane, leaves clearance space and can pass in and out to make workpiece between N (can be 2,3,4,5) group abrasive grinding wheel.(in figure, only illustrating 3 groups of abrasive grinding wheels).N (can be 2,3,4,5) organizes in abrasive grinding wheel, often organize abrasive grinding wheel to be made up of unit head and emery wheel respectively, unit head can be electro spindle, also can be high-precision pneumatic bistrique, unit head is required it is rotating speed high (1500-100000rpm), shake little, precision is high, and rotating speed is adjustable.High to emery wheel desired strength, concentricity is high, and material is suitable, and granularity is moderate, does not pollute workpiece.

Be rotating speed moderate (0-800rpm) to the requirement of main spindle box, guide rail requires identical with centre numerically controlled lathe, and abrasive grinding wheel relative main can be made to be X to, Z-direction moving interpolation.

Dust collecting system requires good airproof performance, and insulating properties is high, and equilibrium of bleeding, barrier propterty is high.

In Figure 10 and Figure 12, workpiece (8) is installed to chuck or dop (5) are upper, clamping power is moderate, avoids being caught broken workpiece.Close hermatic door, start automatic cycle.Complete by using different abrasive grinding wheels: Excircle machining (Fig. 7), chamfering (Fig. 6), cutting thread (Fig. 9), cut-out (Fig. 8) also can do the operations such as ladder, fluting, cut-out; in cyclic process; no shutdown; prosthetic is intervened, and realizes automatically working.The dust produced in cyclic process by timely suction filtration, pollution-free phenomenon.Achieve the function identical with centre numerically controlled lathe.

Claims

1. one kind replaces the CNC numerical control grinding lathe of blade turning with wheel grinding, adopting high-speed electric main shaft or high-speed, high precision pneumatic grinding head to install emery wheel additional replaces blade as grinding unit, many groups grinding unit composition complete tool storehouse, numerical control two axis rail controls feeding and switches station.Achieve at a high speed, accurate, Continuous maching.Complete machine seals, and dust, through circulating filtration, does not pollute environment.

2. CNC numerical control grinding lathe according to claim 1, is characterized in that: grinding unit is made up of unit head and emery wheel, and unit head can be high-speed electric main shaft or high-speed, high precision pneumatic grinding head, and rotating speed is adjustable (1000-100000rpm).Emery wheel can be any material, is characterized in that grinding linear velocity is high, good concentricity.

3. CNC numerical control grinding lathe according to claim 1, it is characterized in that arranging compared with cutter CNC numerically controlled lathe with other, its main spindle box and main shaft only complete Set and Positioning and feed function, and grinding unit replaces lathe tool, and main shaft and grinding unit group are furnished with multiple combination.A, B combination such as shown in Figure 10, Figure 11, Figure 12 and Figure 13.

4. CNC numerical control grinding lathe according to claim 1, main shaft and guide rail adopt CNC SERVO CONTROL, to complete moving interpolation.

5. CNC numerical control grinding lathe according to claim 1, is characterized in that integral sealing, has air draft of bleeding, dedusting filter.