TWI731427B - Deflection absorption apparatus - Google Patents

Abstract

A deflection absorption apparatus which comprises an elastic deflection absorbing sleeve, wherein the elastic deflection absorbing sleeve has an elastic absorbing space, two washers are arranged on the upper side, and a plurality of balls are arranged in the middle of the two washers, when the deflection absorption apparatus is installed on the leadscrew which has deflected phenomenon, it can absorb the displacement of the lateral movement by the sliding between balls and washers, and the buffer of the elastic absorbing space also can absorb displacement when the deflected leadscrew is rotated, thereby reducing the sway caused by the driven object due to deflection of the leadscrew.

Description

Deflection absorber

The present invention relates to a deflection absorbing device; particularly to a screw deflection absorbing device, which utilizes an elastic deflection absorbing sleeve, a ball, a ball upper gasket and a ball lower gasket to absorb the deflection of the screw The driven object shakes.

Please refer to Figure 1. When the screw 1 of the prior art drives a driven object, there is usually a screw nut device 12 sleeved on the screw 1, and the driven object will be installed on the screw nut device 12 and used The screw is fixed at the position of the screw nut screw hole 13. When the screw 1 rotates, the screw nut device 12 will advance or retreat along the axial direction of the screw 1, and at this time, the driven object can be driven to advance or retreat.

Please refer to Figure 2. However, the general processing method of the screw 1 is likely to cause the screw 1 to warp due to thermal stress, processing pressure, or improper stacking and handling when the processing methods of the general screw 1 undergo material selection, cutting, rolling and grinding. When the screw 1 is warped, it is difficult to maintain the axis of the screw 1 at the position of the center line 14, which will cause the lateral deflection 19 of the screw 1 due to the axis deviation 21 when the screw 1 is running 18. When the rear centerline 15 deviates from the original centerline 14 position, the screw 1 will run 18 to produce a lateral deflection 19, and the driven object will have left and right deflection displacements 20. These deflection displacements 20 can easily cause the driven object to deviate. Shaking, this will affect the accuracy and smoothness of the machine during operation, increase wear and shorten the life of the machine.

The known technology in which a general screw is matched with a screw nut to drive a driven object. The screw generally has the problem of warping due to processing or improper stacking and handling. Therefore, you may choose more advanced materials and more advanced materials. Precise processing technology to produce a higher precision screw, but this also means that a high-precision screw has a high cost problem. Therefore, it is necessary to develop a low-cost yaw absorption device to solve the yaw behavior of the driven object caused by the lateral deviation of the shaft center of the screw warping.

The deflection absorbing device of the present invention includes an elastic deflection absorbing sleeve, the elastic deflection absorbing sleeve has an elastic absorbing space, two pads are arranged on the upper side, and a number of balls are installed in the middle of the two pads. When the deflection absorbing device When installed on a screw with deflection phenomenon, it can absorb the displacement of the lateral left and right yaw movement when the screw rotates by sliding between the ball and the spacer and the elastic absorption of the space, thereby reducing the displacement caused by the screw deflection. The shaking caused by the driven object allows the driven object to move smoothly up and down along the axis of the screw.

The effect of the present invention can provide an absorbing device whose load is driven by the object to deflect when the screw rotates. The yaw absorbing device absorbs the change of the screw yaw under load in combination with the axial direction of the screw. Furthermore, the components of the deflection absorbing device of the present invention are all common materials. Compared with the use of high-cost and more precise screw processing technology, it has the purpose of reducing processing difficulty and saving costs.

1: screw

2: Ball upper gasket

3: Ball under the gasket

4: main body shell

5: Ball

6: Ball sleeve

7: Elastic deflection absorption sleeve

8: Nut

9: Elastic absorption space

10: Deflection absorber

11: Screw hole

12: Screw nut device

13: Screw nut screw hole

14: Centerline

15: Centerline after deflection

16: Elastic space on the right

17: Elastic space on the left

18: running

19: Lateral deflection

20: Deflection displacement

21: Axis deviation

Figure 1 is an isometric view of conventional screw technology.

Figure 2 is a schematic diagram of the conventional screw technology when it deflects.

Figure 3 is a three-dimensional exploded view of the present invention.

Figure 4 is a cross-sectional view of the present invention when it is in use.

Figure 5 is a schematic diagram of the present invention when absorbing the deflection state.

Figure 6 is a top sectional view of the present invention.

Figure 7 is a bottom cross-sectional view of the present invention.

Figure 8 is a bottom isometric view of the present invention.

Figure 9 is a top isometric view of the present invention.

Please refer to Figure 3, generally according to the present invention, the optimal deflection absorbing device 10 includes a main body shell 4, an elastic deflection absorbing sleeve 7, a nut 8, a ball 5, a ball sleeve 6, a ball upper gasket 2 and a ball under the gasket 3. Please refer to Figure 4, the elastic deflection absorbing sleeve 7 has an elastic absorbing space 9 containing a nut 8, the nut 8 is sleeved on the screw 1, the ball 5 is placed in the ball sleeve 6 and is located on the ball, the gasket 2 and Between the lower ball shims 3 and below the lower ball shims 3 is an elastic deflection absorbing sleeve 7.

Please refer to Fig. 5, Fig. 6, Fig. 7 and Fig. 8. When the screw 1 rotates, the deflection absorbing device 10 will be driven to advance or retreat along the axis of the screw 1. Once the axis of the screw 1 is deviated When the center line 14 is at the position, the center line 15 is one displacement away from the original center line 14 after the deflection. When the displacement occurs on the right side of the center line 14, the nut 8 will move laterally to the right. At this time, the elastic absorption of the elastic deflection absorption sleeve 7 The space 16 is reduced, and the elastic absorption space 17 on the left side is increased. Therefore, when the displacement occurs on the left and right sides of the center line 14, the nut 8 will move laterally and left and right. At this time, the elastic deflection absorption cover 7 is elastic and the material itself Its elastic absorption space 9 and free sliding balls 5. The lateral displacement of the nut 8 can be absorbed, and the main housing 4 is not affected by the displacement of the nut 8, so that the deflection absorbing device 10 can smoothly move forward or backward along the axis of the screw 1.

Please refer to Figure 9, the main body shell 4 is provided with a number of screw holes 11, which can be used for screwing with the load driven object.

The deflection absorption device 10 can also be directly installed in the internal space of the driven object.

1: screw

2: Ball upper gasket

3: Ball under the gasket

4: main body shell

5: Ball

6: Ball sleeve

7: Elastic deflection absorption sleeve

8: Nut

9: Elastic absorption space

10: Deflection absorber

Claims (6)

A deflection absorbing device includes: a nut sleeved on a screw, when the screw rotates, the nut can be driven to advance or retreat along the axis of the screw; an elastic deflection absorbing sleeve, the elastic deflection The absorbent sleeve contains the nut; a ball, the ball is a round and smooth object that can slide freely; a ball sleeve, the ball sleeve has a space for placing the ball, and the ball is placed in the space; a ball on the ball A gasket is placed on one side of the ball sleeve; a ball lower gasket is placed on the other side of the ball sleeve; a main body shell is provided with an accommodating space in the main body shell to absorb the nut and the elastic deflection The sleeve, the ball, the ball sleeve, the ball upper gasket, and the ball lower gasket are contained in the accommodating space; the elastic deflection absorbing sleeve has an elastic absorbing space, which utilizes the elasticity of the elastic deflection absorbing sleeve material itself , And the elastic absorbing space and the ball that can slide freely, can absorb the lateral displacement of the nut when the screw is deflected, and make the main body shell unaffected by the displacement of the nut, so that the deflection absorbing device can be stable Advance or retreat along the axis of the screw. According to the first item of the scope of patent application, the deflection absorbing device, wherein the elastic deflection absorbing cover is made of an elastic material and has a plurality of cushioning space structures, and the space structure forms an elastic absorbing space. The deflection absorbing device according to item 1 of the scope of patent application, wherein the upper ball gasket, the lower ball gasket, the ball sleeve and the ball are mounted on the elastic deflection absorbing sleeve for absorbing the lateral force when the screw is deflected And between the inner bottom layer of the main body shell. The deflection absorbing device according to item 3 of the scope of patent application, wherein the ball is set Inside the ball sleeve, the ball upper gasket and the ball lower gasket are arranged on two sides of the ball sleeve. According to the deflection absorption device of the first item of the scope of patent application, a screw hole is installed on the main body shell, and the screw hole is used for screw fixing with the load driven object. According to the deflection absorbing device of item 1 of the scope of patent application, the deflection absorbing device can also be directly installed in the internal space of the driven object.

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