JPS58181558A - Device for processing non-true circular shape - Google Patents

Abstract

PURPOSE:To obtaine reliable and highly accurte non-true circular shape, by oscillating a work about a sliding shaft as a center while the work is rotated in synchonism with a cam having its outer diameter surface of a shape similar to the non-true circular shape to be processed. CONSTITUTION:A work W carried by a spindle 29 and a core pressing shaft 34, while rotating in synchronism with a cam 20 supported to a cam shaft 17, is oscillated about the axial core of a swingable shaft 12 as a center in accordance with the outer diameter of the cam 20, caused by swingable arms 14, 15 which oscillate due to the change in the distance between the ceters of the cam 20 and a cam follower, thereby the work W is formed in a non-true circular shape by a grinder 38, having a diameter similar to the outer diameter of the cam 20. The oscillation of the work W is made equal to 1/phi of the raise of the cam 20, where phi is the ratio of the distance H between the axial core and the grinding point of the work W and the distance L between the axial core and the center of the cam 20. By changing the value of phi. The accuracy of the non- true circular shape may be freely adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention applies to non-perfect circular shapes including elliptical shapes etc.
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Conventionally, as a non-round shape machining device, Fig. 111 and @
As shown in Fig. 2, a workpiece whose outer surface is to be formed into a non-perfect circular shape is rotated by a machiura workpiece 4ttl!
! Support the workpiece while holding it between l - (1) Upper K11UJ
Attach cam 1 to L, cam 13) with nine dots (4).
The cola (II) rotates synchronously with the cam 1 and assists the cam surface of the cam 1 ml, and the axis A on the plate spring till.
11 L71 Rigid lever I8 freely attached to K price
A roller (9) that plays a role on the arm (8 tortoise) of 1 and rolls on the workpiece support-1 is placed on the other force (8b) of the rigid lever ζS). α-
By changing the distance between the respective centers of the rear till and the cam 13), the leaf spring 6) is tightened, and due to its elastic reaction force, the 14 workpiece support shafts of 1vA are elastically The bolt of the workpiece (w) and the axis of the grindstone (101) change into a synchronous force with the illumination of the workpiece (W), and due to this change, the outer 4L of the cam I11 is applied to the outer surface of the workpiece (w).
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By the way, in the above-mentioned conventional processing station, the workpiece support 1
dlnl f! By setting a large ratio between the spring constant of l and the spring constant of the leaf spring 161, and layering a cam (3) with a four-value shape of the workpiece and a springbo force ratio of 1-''/), the workpiece can be I needed a stone to improve the friction of the external non-perfect circular shape, and the spring constant was LIl, 1 + l and j.
Difference from A barrel, work support axisllll! Due to four indeterminate factors such as changes in spring constant due to fatigue of l and ring spring 1 button, it required 4f14 trials of skill to obtain the desired non-perfect circular shape.

This invention eliminates the trial and skill required due to unstable elements such as conventional force-type springs, and creates a stable non-perfect circular shape for the shield. It is intended to be used as a beak.

Before explaining the specific fk side fittings of this invention, I will explain the outline of this invention with reference to FIG. Without rotating, supporting the retraction center O, the cam external shape 17c for QK fixed cam follower modified It forms a circular shape and is a grindstone for grinding gF'i workpiece Wt.

In this machining Aft, the distance from the center O to the grinding point 11 of the workpiece W is H, and the distance from the J4 auxiliary center O to the contact point pi between the cam C and the force force d is If the distance is L and 1,4-ψ, then the work W is 4dJ center 0 within 4d of the fulcrum K (710 beak), 4#l, Ill
If IL, and ψ are set to 100 degrees, the degree of machining of the outer diameter of the workpiece W can be improved without being affected by the outer diameter of the cam C. It's cloudy.

Therefore, the outer surface of the workpiece W can always be stably formed into a non-perfect circular shape similar to the cam C, and the KJM process can be performed at a high degree of accuracy.

Next, the specific fk method of this invention for machining the outer 44 surfaces of a workpiece into a non-perfect circular shape using the machining force method vc4 described above will be described below.
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Burn it from the first picture to the last picture, (Ten is two knit base, Q
! l is the unit base (Ill ic fl! 1 is the VC in the case tn that is freely supported, 9 ψ 1 wheel, - 1 is the i secondary arm with both 1K filli parts of 4 @ 4 as attached, 4 d 411m!i axis Ojk fulcrum d,
Jyobata II Ka4wJsuru・Kono4 m di L14
I + @ has 4 connecting shafts α- installed in the intermediate product center to make it a one-man version, and the cam sleeve IJ force is rotatably mounted on the Yuyakushanran, and the cam shaft J force is Both 4-part IC ties (use the puffer pulley 11). @ is a cam with an outer T4L surface with a similar shape to Addiba Works 1, and ■ is a b cam fixed to the free end of the Harukiri bowl dυ. This is the shaft case.The cam
, the temple is a cam 1dl17 supported by a camshaft case et+
r! is fixedly installed on 14 of 1, and between the free end of the 41IJ bowl d ring and the unit base 111+. The campuokua, which is made of Japanese cypress and is layered with a predetermined force on the six floor DVC shoulders, is rotatably supported by a support fitting attached to the unit base, and is connected to a rotating cam. 101 wax without bending due to pressure welding. - is a drive disk that is rotatably mounted on the - product of the two-knit base (11), and is broken in succession with a muzai driver (not shown).
As a result, +o1%r initialization is performed. (To) #'i
Attach the VJr nine tie inder pulleys to the disc 1 on the cam 4 through the continuous fin, and hang one tie between the tie pulley 1 on the cam @ (Ill). .

The problem is that inside the spindle case (with 4 spindles supported by self-pressure and 9 spindles, when the workpiece peak is different during setup etc., the grinding point date is 4).
Rotate the swing axis +l so that it is directly above the driving wheel Fho! The main shaft case is attached to the 64th section of the 151 so that the T7 set A with both wheel cores is the same as the main shaft case. When moving, the workpiece (
In the embodiment shown in A1, the trunnion (W) of the tripod filter cylinder is held. Attached to the auxiliary stay (to) and 4 attached to the throat, the tailstock 1 is attached to the main spindle case 1, and the tailstock 1 is attached to the 140,000 yen of the main spindle. is a pressure spring that is connected between the tailstock case skin and the tailstock shaft A, and its elasticity forces the tailstock sleeve (in the direction of main 11111d, and v
The work piece is elastically held at the joint between the 14 stopper υ and the center Pp axis. Multiply the Thai Inog belt between the pulley Jml and @NA, and make the camshaft U71 and the main shaft 4 rotate in synchronized manner.4. The stone is a known type of whetstone, and it is directed to be placed vertically on the vertical plane of the grinding grip point #1 and the front axis O, so that the main 44 can be shaken even if the workpiece (W) changes slightly. - Set the workpiece (Gin's shaft center) to I so that it can be adjusted to Vlh a 31
An is an idle pulley installed in order to give the required tension of 1 inch to the idle pulleys UJ11 and 1 and the tie pulley Jc(!-1). Aishi: Next, we will explain the operation of machining a workpiece using the stacking system configured as described above.

First, a workpiece (IF
) is supported between the V@stopper 131J and the tailstock shaft adjustment. In this case, the auxiliary disk (to) is IO by the pivot motor.
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The cam Jl and the main shaft are transferred to and from the rotating part 11 via the tying belt and the tying belt. Then, the work supported on the spindle 1 and the tailstock sleeve 341 is at the cam's / +ai
With respect to rotation / While carrying out synchronous rotation of Iol, the distance between the centers of the cam wire and cam follower: □□□ changes and the oscillating arm an- is disturbed. Perform 41114IllJ according to the outer case of the cam, centering on the axis O of the shaft ■. From LK, the outer diameter of the workpiece (W) is shaped by the grinding wheel into a non-perfect round shape similar to the outer diameter of the cam.

In the above processing equipment, the distance -tn from the axis O of the four auxiliary wheels U force to the grinding AI point 8t of the workpiece (w) is 111I.
I11!11 power from -60 to cam- and cam fo a7d
4 Ugly point p11 with L and Sfe, and L7.
= ψ, and set II and H so that they are ψ-100. For example, if there are two rapes in Kham, work (cd + of town: 41, a B F'10.02 + w (shi 10)
According to the processing apparatus of the present invention, by obtaining 6 values of SI and H, the smoothness of the non-round shape of the workpiece < VO can be freely adjusted to VC, JliE machisho. It is possible to process non-perfect circular shapes.

In addition, in the Kaminari example, we will explain the case where the Harima point 0 and the grinding point 8 are placed on the same plane and processed. It is not necessary to provide it on the same plane, and even if the oscillation tIJ1 [i + center 0 is set directly above the workpiece axis, the diameter difference and shape are uniform.

As explained above, this invention is supported on a base so as to be freely rotatable.
One arm of the ninety-nine swing is attached like kdjjfh, one is installed on the cam shaft which is rotatably mounted on the free part of this arm, and the spring is installed far between the base picture and the swing bowl. A fixed cam follower rotatably mounted on the bridge abutment is always covered with soil, and a cam having an outer surface slightly similar to the outside of the Kodama sub-kai workpiece is offset by a predetermined distance from the center of the above-mentioned Juhakuma. The workpiece is supported by a nine main spindle which is rotatably supported around the axis K11 and six pushers installed opposite to the main spindle, and
Since we have made it possible to perform non-perfect circular shape machining by performing swing casting with the shaft at the center Vc, it is possible to perform non-perfect circular shape machining that allows the sliding degree of the non-perfect circular shape of the workpiece to be freely adjusted.
In addition to the stone, it is possible to eliminate the conventional trial iron AJs element and obtain a stable non-perfect circular shape.

[Brief explanation of drawings]

7 and 2 are a plan view and a front view showing a conventional non-circular processing wheel 111, FIG. 3 is a diagram illustrating the outline of the non-circular processing apparatus of the present invention, and FIG. 5 is a cross-sectional plan view of components showing a row of different bodies of the non-perfectly circular blade cutting device of the present invention;
FIG. uz'-・4 glass shafts, II 雫 α4・-襦臺, αe・・connecting shafts, i? le・camshaft, uL19italJl・・tying force, −・・cam, 4-e tension spring, (to)・cam follower, +21・−disruption disk, (
To) Jun) Ting belt, 1--Main shaft, Plate)...7
4 stops, or...psychological axis, ``e@Whetstone. 2nd W! ! J Figure 3

Claims (1)

[Claims] 111 Base Klt! 4! 41 supported in one turn
1 shaft, 4 auxiliary arms attached so that the center of the 4 front shafts is VC#hvIJ, and a shaft that is rotatably mounted on the free part of this 4111 arm and played a part by the 9 cam shafts, and swings and swings. T with arms
A rigid follower (17c) which can be freely rotated at 4 o'clock with a spring tensioned on i5 is always coated with -E layer, and the outer diameter is similar to the workpiece's outer diameter to be machined. [a cam having fi;
Top #t! The nine sowing shafts, the main shaft that is offset from the paddy and can rotate nine times around one core, and the tailstock shaft, which is opposite to the vagina main shaft, produce one seedling! A non-perfect circular shape machining device characterized in that it performs non-perfect circular shape machining by moving 4wJ around the unloading axis while rotating the machine.