JP4469362B2 - Synchronized operation ball piece with guide block - Google Patents

Description

  The present invention relates to a ball piece used in a linear guide device, and more particularly to a tuned operation ball piece having a guide block that can achieve the object of avoiding interference and effectively improving smoothness.

  The conventional linear guide device has many applications in the industrial field and requires a high precision effect as a linear feed transmission, and also has a low frictional wear rate, high energy conversion rate, low noise, and high rigidity. Needless to say, each linear guide device is important for application devices used in conventional industries.

Conventionally, each linear guide device provided with a bearing mainly performs a linear motion or a rotational motion using a slider, a guide way, and a rolling element.
1. Preventing the rolling element from falling off the slider when the slider leaves the guideway;
2. Avoiding rolling elements from touching each other and increasing frictional resistance,
3. In order to achieve smooth movement by aligning and localizing each rolling element, usually, the rolling elements are arranged one by one on a chain-like synchronized operation ball piece, and the rolling elements between the ball pieces are arranged. Use the interval to achieve that goal.

  In the general prior art which has been often seen so far, as shown in FIGS. 1 and 2, the tuning operation ball piece 10 is constituted by a spacer 11 and a connection portion 12, and further, the spacer 11 of the tuning operation ball piece 10 is formed. Ring-shaped side angles appear at both ends, and the following situation occurs when the tuning operation ball piece 10 moves to the slide guide device.

  Part 1: When the tuning operation ball piece 10 moves from the return path A on the load side and enters the direction rotating part B, both ends of the tuning operation ball piece 10 consist of both spacers 11 and connection parts 12. Therefore, both ends of the spacer 11 and the connection portion 12 have ring-shaped side angles. In addition, the direction of motion is shown in FIG. 1 in the direction of the rotational motion B first entering the direction rotating part B and contacting the reflux groove wall B1 of the direction rotating part and then again along the reflux groove wall B1 of the direction rotating part. Like that. Then, both ends of the spacer 11 and the connecting portion 12 of the tuning operation ball piece 10 collide with the opening D (combination gap) of the direction rotating portion in a relation in the orthogonal direction. Therefore, the synchronized operation ball piece 10 cannot be guided well to the direction rotating part B and cannot achieve a smooth movement, and the smoothness is deteriorated.

  Second: When the tuning operation ball piece 10 moves from the direction rotating portion B and enters the return path A on the load side, both ends of the tuning operation ball piece 10 are composed of both spacers 11. In addition, a ring-shaped side angle appears at both ends of the connecting portion 12. The movement direction is a tangential direction and enters the load-side return path A, and then comes into contact with the rolling groove wall C and again performs a linear motion (as shown in FIG. 2) along the load-side return path A. Therefore, since both ends of the spacer 11 and the connecting portion 12 of the tuning operation ball piece 10 collide with the rolling groove wall C in the tangential direction, the tuning operation ball piece 10 can be well guided to the return path A on the load side. In this case, the smooth movement cannot be achieved, and the rolling element 13 is in poor smoothness.

  Third: When the conventional tuning ball piece 10 is moved cyclically, the rolling element 13 is affected by the collision and affected by interference, and cannot move along a predetermined path. The degree of smoothness is severely affected by diffraction.

  In order to overcome the above difficulties, US Pat. No. 6,155,718 shown in FIGS. 3 to 4 has been researched and designed in the market. The tuning operation ball piece 10 is also composed of a spacer 11 and a connection portion 12, and is formed with a chamfer guide portion 122 for cyclically guiding both ends 121 of the connection portion 12 of the tuning operation ball piece 10. Chamfers are produced at both ends of the spacer 11. Such a conventional technique solves the problem of collision or diffraction due to a large number of motions. However, in the course of the operation, the following situation to be improved still remains.

  Part 1: The synchronized operation ball piece 10 moves from the return path on the load side and enters the direction rotating part. At this time, the connecting portion 12 has the chamfering guide portion 122 and the spacer 11 has the chamfering 111, but the contact portion between the connecting portion 12 and the spacer 11 still has the configuration of the vertical portion and the side angle. Therefore, even if it moves in the tangential direction, smooth movement cannot be achieved, resulting in interference between the opening and the combination gap, leading to a poor smoothness situation.

  Second: The contact portion between the connection portion 12 and the spacer 11 not only has a vertical configuration, but the outer dimension of the spacer 11 is smaller than the tuning operation ball piece 10, but the outer dimension of the connection portion 12 is Since it is formed larger than the synchronized operation ball piece 10, even if both members are combined, the rolling element 13 cannot be smoothly and smoothly guided, and the operation on the predetermined path is maintained when operated cyclically. It is difficult to do so, and the tuning operation ball piece 10 is correctly guided to the operation path after the rolling element 13 receives a collision of a larger gap, but the smoothness is not preferable for smooth movement, and clear noise Will also cause.

The design of the linear guide device effectively researches and develops a more competitive product for the ball piece, and effectively solves the agenda on the above, in order to make the circular motion between the elements more complete For this reason, the inventor of the present application makes use of various research and development techniques and experience accumulated in the field of linear guide devices so far to make efforts from the aspect of operational collision or good guiding effect, and is progressively innovative. The tuning operation ball piece 10 having a simple guide block was found.
US Patent No. 6,155,718

  An object of the present invention is to provide a tuned operation ball piece including a guide block that mainly maintains the operation smoothness and stability of a linear guide device.

  Another object of the present invention is to provide a tuned operation ball piece including a guide block that can effectively guide driving in a predetermined route and avoid interference due to a collision.

  In order to achieve the above object, a tuning operation ball piece 10 having a guide block according to the present invention includes a belt-shaped connecting belt and a guide block fixed to an end, and the guide block is a track wall surface of a rolling element. A circular arc surface is formed corresponding to. The tuning operation ball piece does not collide with the track wall surface by guiding the guide block, and can maintain the operational smoothness and stability of the linear guide device.

  In the tuning operation ball piece having the guide block of the present invention, an arc surface is formed corresponding to the raceway wall surface of the rolling element, and the outer dimension of the guide block is between the outer dimension of the spacer and the outer dimension of the rolling element. It is in. Therefore, the collision distance is reduced by the outer dimensions of the guide block, and the rolling element is smoothly guided to the predetermined path for operation, so that the rebound collision of the rolling element is indirectly reduced and the collision noise with the rolling element is reduced. And the interference caused by the collision of the arcuate surface of the block-shaped guide block with the track wall surface does not occur.

  The above-mentioned object to be achieved, the technology adopted, means and other effects according to the present invention will be described in detail as follows by listing more preferred embodiments and combining structural drawings, experimental drawings and experimental data. By doing so, I am confident that the objects, features and other advantages of the present invention will be deeper and more concretely understood.

  As shown in FIGS. 5, 6, 7 and 8, the tuning ball piece 20 having the guide block of the present invention includes at least a plurality of spacers 21, a belt-like connecting belt 22, and two guide blocks 30. The linear guide device 50 includes a guide way 52, a slider 53, and an end cover 54 (the composition of the linear guide device is the same as that of the linear guide device 50). The description is omitted because it is just a common technique.

  The tuning operation ball piece 20 includes a plurality of spacers 21 and connecting belts 22 on both sides, the connecting belts 22 on both sides are coupled to both sides of the plurality of spacers 21, and the spacer 21 corresponds to the operation direction of the track 51. And held between the rolling elements 40. The belt-like synchronized operation ball piece 20 is operated so as to circulate in the track 51 of the linear guide device 50 in accordance with the rolling element 40.

  The guide block 30 is fixed to the outer ends of the spacers 21 at both ends of the tuning operation ball piece 20 (this embodiment is integrally formed by injection molding, and therefore a release hole is formed at the center of the guide block. The guide block 30 is formed with a smooth arc surface 31 corresponding to the wall surface of the track 51 of the linear guide device 50, and the outer dimension of the guide block 30 is the spacer 21 of the tuning operation ball piece 20. Between the outer dimensions of the rolling element 40 and the outer dimensions of the rolling element 40, and the structures and techniques described above are detailed descriptions of important structures and techniques of the present invention.

  The explanation of adopting the superior point in the embodiment of the present invention and the effect at the time of operation will be described below.

  The present invention includes a slide way 52, a slider 53, an end cover 54, a plurality of rolling elements 40, a tuning operation ball piece 20 and two guide blocks 30 (as shown in each drawing). A first rolling groove 521 for rotating the rolling element 40 along the axial direction is provided, and the slider 53 is installed on the slide way 52, and a first rolling groove 40 is rotated for rotating the rolling element 40 in the axial direction. Two rolling grooves 531 are provided. The second rolling groove 531 and the first rolling groove 521 of the slide way 52 form a load-side return path 511 corresponding to each other, and further, the non-rolling element 40 for non-rotating movement of the rolling element 40 on the slider 53. A load-side reflux path 512 is provided. The end cover 54 is erected on both ends of the slider 53, and a direction for forming a complete circulation path 51 of the rolling element on the end-cover 54 with the load-side return path 511 and the non-load-side return path 512. A rotating unit 541 is provided.

  During the operation of the present invention, the belt-like synchronized operation ball piece 20 is operated so as to circulate in the track 51 of the linear guide device 50 in accordance with the rolling element 40, and the two guide blocks 30 are operated in the synchronized operation ball piece. A smooth arcuate surface 31 corresponding to the wall surface of the track 51 of the linear guide device is formed. Therefore, when the rolling element 40 is operated, the guide block 30 smoothly guides the load side return path 511 or the non-load side return path 512 to the smooth arc surface 31 formed on the wall surface of the guide block 30. Slides with respect to the wall surface of the track 51 of the linear guide device 50, and the problem of interference due to the side angle does not occur. Therefore, the present invention effectively maintains the operational smoothness and safety of the linear guide device. It is certain to do.

  What should be specially explained is that the outer dimension of the guide block 30 in the present invention is between the outer dimension of the spacer 21 of the tuning operation ball piece 20 and the outer dimension of the rolling element 40. Since the block 30 and the tuned operation ball piece 20 are integrated, the present invention attaches to the circulation track 51 and performs an endless circulation motion, and thus the direction rotating portion 541 of the end cover 54 and the load-side return path 511. There is still a significant tangential difference. The guide block 30 of the present invention can pass through each opening and bend by using a smooth circular arc surface 31, and the outer dimensions of the guide block 30 are the rolling elements 40 on the rear side. And the collision distance between the track 51 and the wall surface of the track 51 can be reduced, and noise and bounce can be reduced. Therefore, the external dimensions of the guide block 30 of the present invention through the rolling element 40 and the spacer 21 are forcibly operated by the synchronized operation ball piece 20 to the originally set cyclic operation track, and the synchronized operation ball piece 20 is operated. Since the occurrence of a large collision distance when the leading and trailing spacers are formed small can be avoided, the collision and noise that occur when the rolling element circulates in the track can be effectively reduced.

Finally, the movement state will be described as follows again by combining the effects of the present invention.
First, as shown in FIG. 7, when the tuning operation ball piece moves from the return path 511 on the load side and enters the direction rotating portion 541, guide blocks are installed at both ends of the tuning operation ball piece 20. Therefore, when the synchronized operation ball piece 20 moves in a straight line and the guide block 30 at the tip comes into contact with the reflux groove wall of the direction rotating portion 541, the guide block 30 is first rotated in the direction by utilizing the guiding action of the arc surface 31. Rotating motion is performed along the reflux groove wall of the portion 541, and further, the entire tuned operation ball piece 20 is led and circulated so that the spacer 21 of the tuned operation ball piece 20 collides with the direction rotating portion 541. Unstable operation can be avoided and the purpose of smooth movement can be achieved.

  Second, as shown in FIG. 8, when the tuning operation ball piece 20 moves from the direction rotating portion 541 and enters the load-side return path 541, guide blocks are installed at both ends of the tuning operation ball piece 20. Therefore, when the tuned operation ball piece 20 moves in the tangential direction and the guide block 30 at the tip contacts the load-side return path 511, the guide block 30 uses the guiding action to first return to the load side. The linear motion is performed along the path 511, and further, the entire tuned operation ball piece 20 and the rolling element 40 are led to perform the circulatory motion, so that the spacer 21 of the tuned operation ball piece 20 collides with the reflux path 511 on the load side Unsmooth operation due to the operation can be avoided and the purpose of smooth movement can be achieved.

  Finally, referring to the three-dimensional view showing the possible embodiments of the guide block of the present invention in FIGS. 9A to 9J, the shape of the arc surface 31 of the guide block 30 of the present invention is a sphere, a hemisphere, a truncated sphere, Any of various forms of the arc surface 31 such as a truncated cone, a cone, an ellipsoid, a semi-ellipsoid, and a truncated ellipsoid can achieve the object of the present invention. The maximum diameter is slightly smaller than the diameter of the rolling element, and the maximum diameter is slightly larger than the spacer 21 of the tuning operation ball piece 20, and any of the above embodiments can be made by integral injection molding. In addition, a release hole can be provided in the center of each guide block.

  In general, the present invention includes a belt-shaped connecting belt, a plurality of spacers, and a guide block fixed to the end thereof, and the guide block has a wall surface corresponding to the track of the rolling element formed into an arc surface, In addition, since the outer dimension of the guide block is between the outer dimension of the spacer and the outer dimension of the rolling element, the operation of the linear guide device can be performed without the collision operation ball piece colliding with the track wall surface by guiding the guide block. Smoothness and stability can be maintained.

  Therefore, it is obvious that the present invention is already industrially usable, and the technical features disclosed in the present embodiment are not disclosed in publications or media before filing, and should be used for publication. In addition, since the enhancement of the additional effect cannot be impaired, the present invention meets both the requirements of patents as “novelty” and “inventive step” and is granted early through examination. I expect.

The sketch which the 1st conventional tuning operation ball piece enters into a direction rotation part, and operates. The sketch which the 1st conventional tuning operation ball piece enters into the 1st rolling groove, and operates. The side view of the tuning operation ball piece of 2nd conventional USP6,155,718. The other conventional side view of USP6,155,718 other operation tuning ball piece. The side view of the tuning operation ball piece of the Example of this invention. The other side view of the tuning operation ball piece of the Example of this invention. The sketch which the synchronous operation ball piece of the Example of this invention enters into a direction rotation part, and is operated. The sketch which the tuning operation ball piece of the Example of this invention enters into a 1st rolling groove, and is operated. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention. The three-dimensional view which shows the form which can implement the guide block of this invention.

Explanation of symbols

<Conventional technology>
DESCRIPTION OF SYMBOLS 10 Spacer 11 Spacer 12 Connection part A Load side return path B direction rotation part B1 Return groove wall C Rolling groove wall 121 Both ends 122 Chamfer guide part 111 Chamfer <Invention>
DESCRIPTION OF SYMBOLS 20 Synchronous operation ball piece 21 Spacer 22 Connection belt 30 Guide block 31 Arc surface 40 Rolling element 50 Linear guide device 51 Track 511 Load side return path 512 Non-load side return path 52 Guideway 521 First rolling groove 53 Slider 531 2nd rolling groove 54 End cover 541 Direction rotating part

Claims (3)

A tuned operation ball piece having a belt-like shape and having a guide block that is mounted in a track of a linear guide device in accordance with a plurality of rolling elements,
The tuning operation ball piece includes a plurality of spacers and a connecting belt connected to both sides of the spacer, the spacer is held between the rolling elements corresponding to the operation direction of the track, and the guide block is the tuning operation ball piece. Are fixed to the outer ends of the spacers at both ends of the
The guide block is shaped into a circular arc surface corresponding to the track wall of Li linear guides device, and the external dimensions of the guide block, the outside dimension of the tuning operation ball piece of the rolling element and the outer dimensions of the spacer A synchronized operation ball piece characterized by being in between. The shape of the guide block forming the arc surface is a sphere, a hemisphere, a truncated sphere, a truncated cone, a cone, an ellipsoid, a semi-ellipsoid, or a truncated ellipsoid. A synchronized operation ball piece comprising the described guide block. Wherein the center of the guide block, the tuning operation ball piece having a guide block of claim 1, wherein the mold release hole corresponding to the spacer tuning operation ball piece is provided in advance.

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