CN86206789U

CN86206789U - Feeding mechanism for invariant angle cutting of special surface

Info

Publication number: CN86206789U
Application number: CN 86206789
Authority: CN
Inventors: 张运潮; 郝高社
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-09-09
Filing date: 1986-09-09
Publication date: 1987-12-09

Abstract

The utility model relates to a feeding mechanism of a cutter for cutting special surfaces, such as end faces, inner holes, outer circles, etc., with invariant angles. The utility model is characterized in that the feeding movement of the cutter is combined by the motion of two coordinates and the rotation of a coordinate to cut the special surfaces with the invariant angle. The optimal cutting parameter can be selected to extend the service life of the cutter. The feeding mechanism is very suitable for processing high-hardness materials. The feeding mechanism has simple structure and low cost; the error of the feeding mechanism is decreased for the errors of the special surfaces which need to be processed; the feeding mechanism is used for parts the curvature radius of which are small and difficult to be imitated. When the utility model is used for production in batch, the economic benefit is especially obvious.

Description

Feeding mechanism for invariant angle cutting of special surface

The utility model relates to the knife system of walking of special-shaped face that not angle cutting end face, endoporus, cylindrical etc. locate.

The pattern method is used in existing special-shaped face cutting more, and cutter is straight-line feed on two coordinate directions, and its cutting angle with curved surface bigger variation takes place, and influences crudy, and tool wear is serious.Use the shaping Tool in Cutting, though can make the cutting angle constant, cause vibration easily, influence crudy equally, and sharpening, tool changing increase unproductive time, production efficiency is low.When milling with being shaped or being shaped mill, also can be difficult to processing owing to endoporus is little.As using numerical control device according to given condition interpolation, cutter is walked to be similar to curve and is processed the special-shaped face, though the crudy height, its complex structure, apparatus expensive, and maintenance difficulty is big.

Task of the present utility model is to select optimum cutting speed and angle in the processing of special-shaped face, improves cutting data and tool life.

The utility model is to realize like this, design corresponding bent guide rail according to the special-shaped face that will process with different curvature surfaces, drive Tool in Cutting by knife bar mechanism, the feed campaign of cutter is the rotation along a mobile and coordinate of two coordinates, control signal is pressed along the automatic slippage of bent guide rail by knife bar mechanism, the curvature surface that cutting is corresponding with it, cutter is parked in and treats the operating position after machining.

Characteristics of the present utility model are that apparatus structure is simple, and the range of work is wide, and is little for radius of curvature, and the part that is difficult to profiling has obvious superiority, and the error of this device own is dwindled for error to be processed simultaneously.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing.

Fig. 1 is that the bent slider guide of walking one of knife system of the present utility model is walked the knife system schematic diagram.

Fig. 2 is the A-A profile of Fig. 1.

Fig. 3 is that the bent guide roller of walking one of knife system of the present utility model is walked the knife system schematic diagram.

Fig. 4 is the schematic diagram that takes out power from the copying lathe oil cylinder.

Fig. 5 is the schematic diagram that takes out power from the engine lathe polished rod.

Guide rail among Fig. 1 (9), (8), (5), the dovetail groove part of drawing only, do not draw in its bottom.(1) is the special-shaped face of part to be processed, cutter head (2) is installed on the knife bar (3), knife bar mechanism is fixedly connected on the slide block (11) by knife bar (3) and forms, the pin-and-hole (12) that connects with power source is arranged on the slide block (11), and the power source that links with pin-and-hole (12) can be the reciprocal rock type cam of slider-rocker mechanism or column.Power is taken from feed rod on the engine lathe, and copying lathe is taken from oil cylinder.

Power is to pass to slide block (11) by intermediary agency like this from lathe.Cylinder body shown in Figure 4 (27) is fixed on the copying tool post (28), when cutter head (2) begins to enter cutting, be subjected to the control of electromagnet and travel switch, piston (29) just is being with piston rod (26) to move back and forth, thereby rocking bar (25) is shaken, slide block (24) is arranged on the rocking bar (25), and slide block (24) has an overhanging bearing pin, and with pin-and-hole (12) thus hinge connection drives slide block (11) motion.(25) one of rocking bars are back and forth finished Machining of Curved Surface, and another back and forth returns position to be processed.Lathe feed rod shown in Figure 5 (31) is installed on the lathe frame (30), feed rod (31) is gone up fixed cylinder gear (32), illustrating remainder and walking knife system is installed on the lathe carriage together, when cutter head (2) when beginning to enter cutting position, gear (33) just enters engaged transmission with polished rod gear (32), and gear (33) is fixed together with conical gear (34) and axle (28).Thereby make conical gear (34) rotate, and then mesh with conical gear (35), drive with conical gear and be fixed on columnar cam (a 38) rotation on the axle, the groove (36) on the cam (38) drives rocking bar (25) and shakes, and ensuing structure is identical with motion and Fig. 4.When slide block (11) from guide rail (9) when slide block (10) slides, cutter head (2) just begins to cut first section curvature surface.The upper surface of slide block (10) has and the guide rail (14) of guide rail (9) with curvature, can make slide block (11) enter slide block (10) smoothly.Process at the end when first section curvature surface, slide block (11) just is fixed in the slide block (10) by alignment pin (13), and the state of alignment pin (13) location and disengaging is by spring---and electromagnet mechanism (16) is finished.Meanwhile, slide block (10) cooperates the retaining mechanism (15) of guide rail (8) to separate with itself, and its retaining mechanism can be that mechanical type also can be an electromagnetic type.Slide block (11) can drive slide block (10) and slide along second section curvature guide rail (8) towards guide rail (5) direction, is being with second section curvature surface of cutter head (2) cutting.Slide block (4) upper surface has and the guide rail (6) of guide rail (8) with curvature equally, can make slide block (10) just fixing by alignment pin (7) in slide block (4), alignment pin (7) location and the state that breaks away from are by with aforementioned spring---the same mechanism of electromagnet mechanism (16) finishes, the retaining mechanism that slide block this moment (4) is mated guide rail (5) unclamps, its retaining mechanism is identical with (15), enter the 3rd section curvature guide rail (5) this moment, begins to cut the 3rd section curvature surface.And the like, the processing multistage curvature surface that can use the same method, generally speaking, three, the level Four slide block can process most of special-shaped face.Bent slider guide is walked between each section of knife system guide rail to leave sufficient gap, can reliably break away from when next section of processing curvature surface guaranteeing, does not hinder moving of slide block.Bent slider guide is walked knife system and can be linked with common saddle, also can be installed on the copying lathe profiling guide rail, also can use for special purpose machine tool.

Describe structure and the operation principle that bent guide roller is walked knife system in detail below in conjunction with Fig. 3.

(1) is the special-shaped face of part to be processed among Fig. 3, (20) be copying contact, knife bar mechanism is by knife bar, knife rest is formed, knife bar (3) is fixedlyed connected with rotating shaft (22) with cutter head (2) respectively, be rotationally connected by rotating shaft (19) and knife rest (18) again, knife rest (18) is according to mechanical profiling or hydraulic tracing control campaign, walk out and the identical track of model (21) curvature, rotating shaft (19) is fixedly connected on the knife rest (18), the track that its center is walked (a) is also identical with model (21) curvature, rotating shaft (22) and concentric being rotationally connected of roller (23), roller (23) can go up roll at bent guide rail (17), the different curvature section center of circle of its centrode (b) respectively with rotating shaft (19) centrode (a) in the center of circle (O of concentric each section ₁, O ₂) with one heart, therefore driving rotating shaft (19) when profiling is moved when knife rest (18), knife bar (3) just drives cutter head (2) and realizes that two coordinates move the feed campaign with coordinate rotation, process required special-shaped face.Bent guide roller is walked knife system model (21) and is fixedlyed connected with the lathe frame respectively with guide rail (17), and knife bar in the withdrawing process (3) withdraws from knife rest (18), the corresponding initial position of next time processing of getting back to of roller (23).

Claims

1, angle cutting special-shaped face is not walked knife system, it is characterized in that sliding along bent guide rail with the knife bar mechanism of cutter head [2], and cutter head [2] is made two coordinates and moved the resultant motion of rotating with a coordinate.

2, the knife system of walking according to claim 1 is characterized in that this walks knife system is that bent slider guide is walked knife system, and wherein several sections guide rails and several piece slide block are corresponding with the special-shaped face (1) of several sections curvature surfaces.

3, the knife system of walking according to claim 2, it is characterized in that above-mentioned bent slider guide is walked the guide rail (14) of slide block (10) upper surface in the knife system and the guide rail (9) of slide block (11) is with the curvature guide rail, the guide rail (6) of slide block (4) upper surface and the guide rail (8) of slide block (10) are with the curvature guide rail.

4, the knife system of walking according to claim 2, feature is to leave certain interval between each section guide rail.

5, the knife system of walking according to claim 1, it is characterized in that this walks knife system is that bent guide roller is walked knife system, wherein knife bar (3) is fixedlyed connected with rotating shaft (22) with cutter head (2) respectively, be rotationally connected with rotating shaft (19) again simultaneously, rotating shaft (22) is concentric with roller (23), the different curvature section of its centrode (b) respectively with each section center of circle (O of rotating shaft (19) centrode (a) ₁, O ₂) corresponding with one heart.