JPS58187643A - Screw feed controlling device - Google Patents

Abstract

PURPOSE:To enhance the feeding accuracy by a structure wherein a means to change the parallelism between a feed screw and a guide way is provided in order to effectively change the cumulative lead of the feed screw by positively changing the parallelism therebetween. CONSTITUTION:The cumulative lead of the feed screw 12 is effectively changed by changing the parallelism between the guide way of a movable body and the axis of the feed screw 12 in order to enable to easily adjust the amount of movement of the movable body to the set value even under the condition that the feed screw 12 has a large cumulative lead error. Furthermore, the constitution combined the movable body with a nut 29 consisting of the combination of a shaft, a bore and a rolling element results in not imparing the linear accuracy of the movable body even under the conditions that the feed screw 12 is not parallel to the guide way as mentioned above and yet has radial run-out. Consequently, the small size screw feed controlling device with high guiding and positioning accuracies can be provided even by employing a cheap feed screw with not so high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION The present specification includes a feed screw, a nut screwed into the feed screw, and a guide means having a straight guide shaft 11&t-1.

81J A screwing device 6C is equipped with an aJ excitation body which is clearly movable in the Kimine inland carpet and is driven by the force of the nut, and sometimes its feed rate is 9 times. Concerning improvements.

To adjust the feed rate with open-loop control in the screw feed att, in other words, J
The temple method of worshiping shrines has been used, either by using a screw with a small IK value or by keeping the cumulative lead medium-shorter than the standard length, and by applying force to the screw and enlarging it to the target value. However, in the previous 40 methods, there was no need to practice.
If you are a lllwJ Nejigura Necessity, there is a sleep world in the degree of sliding, not the force. Also, the method used requires a large amount of tension.

Not only is it inevitable that the thrust member has a large total force, but also the large rigidity that supports the thruster is extravagant.

In addition, when the entire iron becomes larger, etc., the entry point t and i O is also caused by the SO sound of the feed screw, because the nut and uJ' movement of the included V screw are one part M. The present invention overcomes the above-mentioned disadvantages, such as giving rise to radial excavation S-body Vct, and deteriorating the process of fabrication. Directly, without getting used to 4 degrees, the cumulative force of the screw can be effectively changed, and the screw-in method can be used to change the total force of the screw. The primary purpose is to provide eel meat.

For this reason, this book provides a means to change the parallelism between the feed screw and the i-path in the system, and by changing the parallelism of the feed screw and the i-way in the system, the cumulative load of the feed screw can be effectively changed. In order to avoid deterioration of the directness of s = f even if the feed screw and the guide path are not parallel, the screws are screwed together and the nut is integrated into the chair. f! Provide a member with a concentric hole (1) with a diameter of 10,000 yen, and at the threshold between the outer periphery of the shaft and the inside of the hole, Gradually interposed the Toyu Guei's taiba, which was arranged in a single column 1, to create a relative mass t without resistance in the direct direction with respect to the axis of the feed screw at the threshold between the nut and the oJ excitation body. -1t'f A screw feeding device is provided. An embodiment of the present invention will be described below with reference to FIG. 4 air bearings, [3] and (4) are rectangular newly opened guide bodies as guide means that constitute a straight guide path;
(6) (6) are respectively -a guide guide (3) (4)
◎It is a movable body that is surrounded by S. Although it is not shown in the figure.

Mouth” - Ichitsu (516) and 2JI & Ensho (3ha 4)
High-pressure air is pumped into each chamber, and the 11#J# body (
6) (6) floats up from Mineuchi +3) (4) without touching it, and can move backward only in the direction of the arrow. In addition, the valley guide +3) (4) has a pedestal (7) at both ends of the 7.
(a) Through the screw (9J U (one reversed to the machine body (6) at J, the feed supported at both ends by ball bearings), the end is the ball shelf bracket four. It is a nut with a preload (7t#) applied to the ・ (to) is the motor that organizes the feed screw (to), and (5) is the shaft coupling that connects the motor and the fs thread screw @ - ClllMd, respectively - A bracket is attached to the firefly member (-) with a set screw v4A-, and 4 is a ball bearing (to) and 14 is a motor (1 is a ball bearing to support each assembly). The part footage is the aircraft (b) IICg8
It is freely supported by the pivot @jWc, and is fixed to the integral body by the set screw @jWc. ρ1 is the movable body (
It is a beam that condenses the beam and (6), and the set screw allows the % movable body [
Fixed name ◎- means feed screw 4), I
L)l is a movable body (h) It is a hard-purchased bush that has a cylindrical hole that is press-fitted into the mFi rice with a round bar-shaped hard shaft that is erected.
I am a poet who is concentric with me. - is a steel ball as a plurality of rolling fin bodies inserted between the outer circumference of the foot and the circumference of the hole;
All, Hole-1 Steel Hole Shaft 1 Steel-by-0#
! It is held and placed in the position O11.
Next, the dimensions of the #IIc valley element, which will be the fitting μ-minus clearance between the hole and end ball 4, are determined by the installed grass. - is a pressure spring installed in the retainer - @The length of this pressure spring is Fyr grass f! If you install it blindly, there will be no connection to the valley J6 for the positioning of the retainer 9161. When the ball is applied in the vertical direction, that is, in the direction of one force, a preload is applied to the m-ball 4, and although it does not cause slippage, it continues to slide downward and the retainer is pushed into the nut. It is possible that the transfer in the axial direction of the ball 4 is obstructed and it does not work well, but the compression pongee is f21111
By using it in i1', this lump can be prevented from being destroyed by I/c. In this way, Natsuto and Liang 4no were completed by passing the axis 18AI, Shinge's first ball, and Butshukaku. According to the tI configuration of 0 or more, Natno's anxiety direction.

That is, since force is applied in the direction of arrow 114JD and in the direction of rotation of the nut, that is, in the direction of rolling the KFi steel ball in all directions, the rigidity t-! As for the enshrinement that reduces the +m injection, speaking of IjI, m sphere -, sum -1 and hole q
(t) As for the deformation of the rock contact part, these fittings are made with a t-minus clearance, and the preload is applied to a large hammer. be able to. - 10,000 times, the radial vibration of the feed screw (to) of G 10,000 times, and the rotational vibration TLK of arrow J direction 10], the displacement of Wl is in the poor state of 5-. can be displaced without any resistance. For example, the axis flall
The value of is 10411. If the diameter of the il1 ball is 3"s and the preload violet is a direct value of iμ, then if the angle is within the range of +/- 5 degrees, the ball can be placed at f: with almost no resistance. Also,
Needless to say, the displacement in the direction of arrow H can be carried out without resistance due to the rolling of the steel ball.

Therefore, it is possible to faithfully pass 4 sea bream through the round-driving body (b) (6) without having to repeat 1!11 to the nut-j, and in addition, the radial #Rn occurs in the feed screw □□□, and the fsD screw (to) θ Displacement of nuts 91 & 11 in a direction other than the driving direction when the shaft center and guide shaft are not parallel is
6) (@) The K line is not transmitted to the ground. Stool is air11151. 1. has a straightness like 1.
Even when using a certain Uchite station with low Chanai rigidity, the original straight F11 straight [nothing to get used to] Above Natsu and 9I! , 9: By special use of Rino Yuso Hironari, the movable body (5) t is added to the OR shown in figure a47.
u) Even if the feed screw is arranged at an angle with respect to the 0φ movement direction, that is, the direction of the arrow, there is no support for driving the oJ exciter (j) (6), so this tLfs screw By rearranging the lead screw t-1kJL, its cumulative lead 1 can be effectively changed. Rotate the sea bream IE Iku material shout) using the pivot as a fulcrum, and tighten it with the setscrew. 1 Natsu)
1 #l Move the distance to the enemy's device with the enemy, and the q exciter (5 halo λ will be sent the distance E-Lθsea 0) Meanwhile, Natsu is attacked by the distance. Friend Toki ri,
An example of the angle b0 in Figure 8 is a feed screw or a stone screw, 4I + Z, and the angle b @ inclination t1.

Nat- is sent 1Icl"1Af51J more than Ml, and therefore becomes L-l (N+b/360).

L-Nl Tomi 1 @888! L・(N+−>−Ml・・
◆■allG+. Because the angle a@ or the negative value of the angle b@ is due to the slope of the angle b@, the nut 9@ is included in l b/3- less than Ml.

L-Mlm l @ 860 a m (N-)-Ml
em” (J)3藝O.

t tas tuk)-V2e t, u 1"↓-34'
From L b m tu-' (-・-↓al) @@aa
@@11@11111111@J In other words, in Fig. 7 and Fig. 8, when the feed screw (to) is rotated N, the cumulative lead N/ has changed to L', and its travel x
This is Arashi Kaden's main lead lead due to Knee Nz missing the feed screw (to). Uchiba@Nle” 150
7J, l m 2 u, , P-3Qal, and when L and Ml are met in the lick VC [with] between the needles S1, the relationship between the angle a0 and L'-Ml is It will look like Figure 9. In other words, %1 degree a is ±0.4@
It is possible to make the Itomaki reed into a 14.8 μm Qh et al. -7.5 voice mR by increasing the degree. Since one angle 6b is at most 21 in this -combination angle Ja←Q, 4', there is no problem in operation according to the above-mentioned axis design of Natsu and Kawari.

l Tasono and Miyabi's M is 1.05M, so M is 1/1
0~'/'20! i[! with accuracy III i to do (
Therefore, it is possible to easily change the cumulative lead t-1 .mu.m or less in seedness.

When a movable object (6th ask- is a target value of 150.0
If the value is 149.990d for 00 u, loosen the stop 14 (2) in Figure 1 and rotate the &IA adjustment board counterclockwise (pivot) to 0.0 from Figure 9. Rotate it by 28 degrees and make it firm. It can be effectively changed by minute amounts, and even if there is a difference in the amount of buildup on the feed screw, it can be easily and accurately with a grain size of 1 μm or less even if there is a difference in the amount of accumulation on the feed screw. can be measured.

In the connection structure between nut-1 and beam-J in the above embodiment, a combination of nine keyaki-shaped holes, a circular VJ-shaped hole, and a copper ball was used. By assembling the rolling element with the private hole and the rolling element in the axial direction, the rock formation can be brought about. lll and Pushi JS-One-N-So-N-Ball-
The rotation of the JO rotation direction is an example in which a tube is provided - the holding of a ball. -〇Rearrangement-@-1 is a circular arc and is called a 4-shaped arm, with two circular arcs that form a V-shaped %
Even if the groove is combined with and- and hole O
Since the contact area of the rolling wI field increases, the stiffness in the direction of the arrow in Figure 1 and in the direction of the arrow 10,000 in Figure 3 becomes large, and becomes more
Suitable for the moving body 4 of lIIn1 degree. By the way, in this case, the rigidity against the displacement in the direction O is also very hot (but the displacement component in the direction is much smaller than the displacement component in the direction O, G, 1t7j, Even if the direction M is large, there is no problem in practical use.In addition, in the implementation C of Figure 1, a 14m plate is provided in order to protect the feed screw (to) O clay head, and this If the frequency of inspection is low, the bearing and motor t-(-
fL-t' can be attached to the direct image fuselage 4 and adjusted individually. According to ll1 of iris 1 figure
4aatra+tm- is provided, and the drive manual installation is controlled by an external signal to change the feed screw depth.

As is clear from the above explanation, the cumulative lead of the fs thread screw can be reduced by changing the parallelism between the guide path of the movable body and the axis of the feed screw. Effective &C change, large cumulative lead on feed screw! Even with 1iLik, the hyperactive weight of the movable object can be easily increased to 111 tatami.Moreover, even if this mK feed screw and the guide path are not parallel, the t-loading screw can be radially Even if there is thIIfL, the 11-turn accuracy of the movable body will not be impaired due to the connection structure between the nut and the -I excitation body by the assembly of *m, the hole, and the rolling body. Therefore, it is possible to use a low-cost feed screw or a screw with a high pin level and positioning sliding performance, and to provide it with a small wheel screw feed system.

[Brief explanation of the drawing]

Figure 1 is part #f of one embodiment of the present invention. Figure 2 TiM1 Figure Omu #1L Series 3- is Figure B- in Series 1
B Enlarged #r side view, Figure 4 is the C-C section of Figure 3 - Figure 1 Part 5
The figure is the 9th scenic sectional view to explain the function, the 6th figure is the main part #rM diagram of other embodiments, the 7th and 8th figures are schematic diagrams to explain the operation, and the 9th figure is the feed screw This is a graph showing the relationship between the #4 bevel angle and the amount of change in lI & turret lead. aaI/i feed screw, OS- is ball bearing, @ is motor, 轡 is gas material, 轡 is pivot, - is beam, - is oak), W+ is shaft, - is bushing, - is hole. The ring is a steel ball as a rolling element %1161 is held at 6° Fig. 7

Claims (1)

[Scope of Claims] (υ Nara) 1- A threaded screw is provided, and a guide means having a straight ``Ik'' guide path for guiding the movable body to the moving target is provided. At the same time, we installed a hand mechanism to change the parallelism between these 9 feed screws and the circular path.
Take any one of the moving objects -1Km, carefully make a hole in which this ring is concentric with the KwC person. Between the outer periphery of the shaft and the inner periphery of the hole, the shaft is rotated 70,000 times, and the shaft is described in a single format as if it were to be rotated, and through the rotation of the rt nine ridges. 2J l!lJ parallel & t-change + beast,
11 for $89 for the support of the screw t and the means for driving the slope and the screw t! Fix the I-pot material and the coax material to the pan that holds the Ig1 rotation in the direction in which the spinning parallelism changes, and the M-shaped member! P-stage and the range of permission required, the screw feeding device of the first loader.