TWI391586B - Resist chunk for ballscrew - Google Patents

Description

Ball screw with stop

The invention is a stop for a transmission element, in particular a ball screw having a stop.

Due to the increasing use of linear transmission components in modern industries, various linear transmission components have been widely used in human life, processing plants and high-tech equipment, such as linear slides, ball screws, etc.; In general, large-scale precision machines are equipped with different ball screws or linear slide systems. Although the development of linear transmission components technology is very rapid, consumer users still need continuous improvement of technology, so many still need to be developed. The problem, especially in many high-precision manufacturing industry tools that require more stable and quiet, has more and more research and development sounds. Therefore, some technical blind spots of linear transmission components are urgently needed to be developed and improved.

However, the machinery equipped with the transmission components sometimes causes collisions between the working platform or the machining shaft inside the machine due to human factors (such as improper operation) and external factors (such as power failure), and relatively causes internal mechanical components. Certain damage. In order to prevent the collision problem, the industry usually installs a stopper at the running limit of a moving object (such as a working platform and a machining shaft), and the stopper is locked with a screw, and when it is artificially When the moving object is overstroke due to improper operation or external factors, the block can provide a stop for the moving object to stop without colliding with other structures of the machine, but such a block has the following problems and still needs improvement:

1. Because the block is screwed to the machine, it is not possible to adjust the distance between the stops.

2. When the moving object hits the stopper, the screw of the fixed stopper is subjected to the shearing force. The impact force that the screw can bear is limited, and it is easy to break and lose the function of blocking the moving object.

Based on the problems of the above-mentioned conventional techniques, the inventors of the present invention have succeeded in research and development, and the inventions which can achieve the object of the following inventions are finally born.

That is, the primary object of the present invention is to develop a stop that adjusts the spacing between the two stops with the needs of the user.

A secondary object of the present invention is to develop a stopper having an impact resistance, and the greater the impact force, the better the fixing effect of the stopper.

In order to achieve the above object, a ball screw with a stopper of the present invention comprises: a long shaft which is elongated, and has a spiral rolling groove on the outer surface; a moving body is sleeved on the The long axis is provided with a rolling groove opposite to the rolling groove, and the rolling groove and the rolling groove form a load path, and both ends of the load path are respectively connected to two ends of a return path to form an infinite loop path The stopper is sleeved on the long shaft, and the stopper comprises: an outer sleeve, an inner sleeve and a fixing sleeve, the outer sleeve has a convex portion, and the convex portion is provided with a first perforation and an outer conical surface. The first through hole penetrates the convex portion, and the long shaft is provided to be in contact with the outer surface of the long shaft, and the outer tapered surface is disposed at an outer edge of the convex portion; the inner sleeve has a protruding portion, The protruding portion is provided with a second perforation, an outer annular surface, the inner surface of the second perforation has an inner conical surface, the outer annular surface is disposed at an outer edge of the protruding portion; the fixing sleeve has a third perforation; Wherein the second perforation of the inner sleeve is sleeved on the convex portion of the outer sleeve, so that the inner tapered surface is opposite to the outer tapered surface Contacting, and the taper and the inclined direction of the inner tapered surface and the outer tapered surface are the same, the third perforation of the fixing sleeve is sleeved on the outer annular surface of the inner sleeve, and the inner surface of the third perforation is external to the outer surface Toroidal contact.

Wherein, the outer sleeve is further provided with a first flange, the convex portion is outwardly protruded from one side of the first flange, the first flange is provided with a plurality of through holes; the inner sleeve is further provided with a The second flange is outwardly protruded from one side of the second flange, and the second flange is provided with a plurality of fixing holes opposite to the through hole.

Wherein, the stopper further has a plurality of fixing members, the fixing member is threaded into the through hole and screwed into the fixing hole, and when the fixing member rotates in a certain direction, the inner sleeve can be driven to the first flange direction Displacement.

Wherein, the fixing sleeve has an impact surface with respect to the end surface of the moving body, the impact surface provides the impact of the moving body, and the fixing sleeve has elasticity and can absorb the impact force of the moving body.

Wherein, the convex portion is further provided with one or more first dividing portions; and the protruding portion is further provided with more than one second dividing portion.

The number of the first divided portions is two, and the convex portion is divided into a first convex portion and a second convex portion, so that a gap is formed between the first convex portion and the second convex portion, and the second portion The number of the dividing portions is two, and the protruding portion is divided into a first protruding portion and a second protruding portion, so that a gap is formed between the first protruding portion and the second protruding portion.

In order to further understand the features and technical aspects of the present invention, reference should be made to the description of the embodiments of the present invention and the accompanying drawings. .

Referring to the first to fourth figures, the present invention is a ball screw with a stopper having a long axis 1, a moving body 2, two reflow elements 22, a plurality of rolling members 23, and more than one. Stop 3 and so on.

The long axis 1 is elongated and has a spiral rolling groove 11 on the outer edge surface thereof. The cross-sectional profile of the rolling groove 11 is approximately similar to the contour of the rolling member 23, so that the rolling member 23 can be rolled thereon. .

The moving body 2 is sleeved on the long axis 1; the moving body 2 can be divided into a body 21 and a reflow element 22 (second image) at both ends thereof for a total of three combinations for convenience of description and convenient manufacture, but the third practice Can be a one-piece structure. The moving body 2 is provided with a rolling groove 211 opposite to the rolling groove 11. The rolling groove 211 in this embodiment is disposed on the body 21, wherein the rolling groove 211 has a cross-sectional profile similar to that of the rolling groove 11, but is convenient for convenience. The difference in the description is particularly referred to as the rolling groove 11 above the long axis 1 and the rolling groove 211 above the moving body 2; the rolling groove 11 and the rolling groove 211 are oppositely configured to form a load path 90, that is, In this region, the rolling member 23 can withstand the load from the rolling groove 11 and the rolling groove 211, and the moving body 2 can reciprocate relative to the long axis 1. That is, when the moving body 2 is subjected to an external force, the rolling member 23 is sandwiched between the moving body 2 and the long axis 1, and provides a reaction force for balancing the external force to the moving body 2 and the long axis 1. In the moving body 2, a return hole 212 through which the rolling member 23 passes can be further provided. The return hole 212 of the embodiment is disposed on the body 21. As shown in the second figure, the return hole 212 is penetrated through the body 21. Hole in the end face.

The reflow element 22 is attached to both ends of the body 21, which moves with the body 21, so that the body 21 and the reflow elements 22 at both ends thereof are co-movers. The return element 22 is provided with a return channel 221. The return channel 221 is connected to the return hole 212 and the load path 90 to form an infinite loop path. The return channel 221 is connected to the return hole 212 and then connected to the other. The return passage 221 above the return element 22 is referred to as a return path A, which is used to cause the rolling elements 23 in the load path 90 to continue to move to achieve an infinite loop path. In addition, some types of ball screw return paths are integrally formed, and it is not easy to clearly separate the return path A into the return hole 212 and the return path 221, so whether or not the moving body 2 has the return hole 212 is an unnecessary feature. As described above, both ends of the load path 90 are respectively connected to both ends of the return path A to form an infinite loop path, so that the rolling member 23 can be infinitely cyclically moved therebetween.

A plurality of rolling elements 23 are accommodated in the infinite loop path, move in the infinite loop path, and allow the moving body 2 to reciprocate relative to the long axis 1. Referring to the second figure, the rolling member 23 does not contact the rolling groove 11 and the rolling groove 211 in the return path A, and is in contact with the rolling groove 11 and the rolling groove 211 in the load path 90, respectively. Bear the load.

The stopper 3 is sleeved on the long shaft 1, and the stopper 3 can be disposed at one end or both ends of the long shaft 1. The stopper 3 includes an outer sleeve 31, an inner sleeve 32, a fixing sleeve 33 and a plurality of fixing members 34. The outer sleeve 31 has a convex portion 310 and a first flange 315, and the convex portion 310 is composed of the first portion One side of the flange 315 is outwardly convex, and has a convex shape. The convex portion 310 is provided with a first through hole 311, an outer tapered surface 312 and a first dividing portion 313. The first through hole 311 is formed. The first through hole 311 extends through the convex portion 310 and the first flange 315 to provide the long axis 1 and is in surface contact with the outer surface of the long axis 1. The outer tapered surface 312 is disposed on the outer edge of the convex portion 310. The tapered surface of the outer tapered surface 312 is inclined obliquely from the end of the convex portion 310 toward the first flange 315. The first dividing portion 313 divides the convex portion 310 into the first convex portion. 310A and the second convex portion 310B have a gap between the first convex portion 310A and the second convex portion 310B. Therefore, the first convex portion and the second convex portion 310B are relatively elastic, and the first flange 315 is A plurality of equidistant ring arrays are provided through the through holes 3151 of the two ends of the first flange 315.

The inner sleeve 32 has a protruding portion 320 and a second flange 324. The protruding portion 320 is provided with a second through hole 321 , an outer annular surface 322 and a second dividing portion 323 . The inner edge of the second through hole 321 has an inner portion. The tapered surface 3211, the tapered surface of the inner tapered surface 3211 is inclined obliquely from the end of the protruding portion 320 toward the second flange 324, and the outer annular surface 322 is disposed at the protruding portion 320 An outer edge, and the outer annular surface 322 is parallel to the outer edge surface of the long axis 1 (as shown in the second figure), and the second dividing portion 323 divides the protruding portion 320 into the first protruding portion 320A and the second portion. The protrusion 320B has a gap between the first protrusion 320A and the second protrusion 320B. Therefore, the first protrusion 320A and the second protrusion 320B are relatively elastic, and the second flange The 324 is provided with a plurality of equidistant ring arrays extending through the fixing holes 3241 at both ends of the second flange 324, and the fixing holes 3241 are disposed opposite to the through holes 3151.

The fixing sleeve 33 has a third through hole 331 and an impact surface 332. The impact surface 332 is disposed opposite to the end surface of the moving body 2, and the impact surface 332 provides the moving body 2 for impact, and the fixing sleeve 33 is It has elasticity and can absorb the impact force of the moving body 2, and prevents other components of the stopper 3 from being damaged.

The above is the detailed structure of each component of the stopper, and the following can explain the effect of the configuration and combination between the components of each stopper: the outer sleeve 31, the inner sleeve 32 and the fixed sleeve 33 are stacked Therefore, the second through hole 321 of the inner sleeve 32 is sleeved on the convex portion 310 of the outer sleeve 31 such that the inner tapered surface 3211 and the outer tapered surface 312 are in contact with each other (the inner tapered surface 3211 and the outer tapered surface 312). The taper and the tilting direction are the same, so that the inner tapered surface 3211 and the outer tapered surface 312 are fitted together, and the third through hole 331 of the fixing sleeve 33 is sleeved on the outer annular surface 322 of the inner sleeve 32, and the third The inner edge surface of the through hole 331 is in contact with the outer annular surface 322. After the outer sleeve 31, the inner sleeve 32 and the fixing sleeve 33 are combined, the three are sleeved on the long axis 1 by the first through hole 311 (as shown in the second figure), and the first through hole 311 is coupled with the long axis. The outer peripheral surface has a slight contact shape, and after the fixing member 34 is screwed into the through hole 3151 and screwed into the fixing hole 3241, the fixing member 34 can be driven when rotating in a certain direction. The sleeve 32 is displaced in the direction of the first flange 315, and the outer sleeve 31 is moved relative to the outer tapered surface 312 and the inner tapered surface 3211 of the inner sleeve 32, so that the inner sleeve 32 is generated by the convex portion 310 of the outer sleeve 31. A pressing force (the gap between the first convex portion 310A and the second convex portion 310B becomes smaller), and the outer sleeve 31 generates a expanding force for the protruding portion 320 of the inner sleeve 32 (the first protruding portion 320A and the second portion) The gap between the protrusions 320B becomes larger. However, since the inner sleeve 32 is sleeved with a fixing sleeve 33, the expansion force is absorbed by the fixing sleeve 33, so that the first dividing portion 313 and the second dividing portion are used. The arrangement of the 323 is such that the convex portion 310 and the protruding portion 320 have elasticity, and the pressing force of the convex portion 310 (the first convex portion 310A and the second convex portion 310B) with respect to the long axis 1 is also relatively opposite. To play the best, also the other portion 320 protruding (projecting portions of the first and the second protruding portion 320A 320B) to the compression force of the convex portion 310 to an optimum play. In addition, it should be particularly noted that the first dividing portion 313 and the second dividing portion 323 are provided in two numbers in the above embodiment, so that the convex portion 310 and the protruding portion 320 both have two gaps; but the convex portion 310 And each of the first and second divided portions 313 and 323 may be provided separately from the protruding portion 320. The pressing effect is of course worse than the two first dividing portions 313 and the second dividing portion 323. The material used in the outer sleeve and the inner kit can be easily deformed, so that the first partitioning portion 313 and the second dividing portion 323 need not be provided to enable the convex portion 310. Since the protruding portion 320 has elasticity, the first dividing portion 313 and the second dividing portion 323 are not essential features of the present invention.

In addition, as shown in the second figure, in order to prevent foreign matter and dust from being accumulated between the first flange 315 and the second flange 324, a wall surface 314 may be extended on the end surface of the first flange 315 opposite to the second flange 324. The inner surface of the wall 314 is in contact with the outer edge of the second flange 324, so that a closed space is formed between the first flange 315 and the second flange 324, in addition to preventing foreign matter and dust from foreign matter. In addition to the accumulation, the inner sleeve 32 can be made more stable during operation because the wall 314 can guide the inner sleeve 32 to run in the direction of the first flange 315.

Finally, it is worth mentioning that the stopper 3 of the present invention is fixed to the long shaft 1 by the pressing force, so that it can be adjusted in various usage forms. Moreover, since the inner sleeve 32 is fixed to the outer sleeve, it still has an axial direction X degree of freedom, so when the moving body 2 strikes the fixing sleeve 33 of the stopper 3, the fixing sleeve 33 absorbs most of the impact force, and remains. The lower impact force is transmitted to the inner sleeve 32, which in turn causes the inner sleeve 32 to be displaced toward the first flange 315, which in turn causes the inner sleeve 32 to increase the pressing force applied to the outer sleeve 31, and also the outer sleeve. The pressing force applied to the long shaft 1 by the member 31 is increased, so that the stopper 3 is more firmly fixed to the long shaft 1 without being displaced, and the effect of blocking the overtravel of the moving body 2 is achieved, so the present invention does The problem of improving the conventional technology does solve the problem that the moving body 2 overtravels and the impact machine is generated.

In view of the above, the "industrial availability" of the present invention should be unquestionable. In addition, the feature technology disclosed in the embodiment of the present invention has not been seen in publications before the application, nor has it been disclosed. The use of not only has the fact that the effect is improved as described above, but also has an additional effect that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the present invention are in compliance with the patent regulations, and the application for the invention patent is filed according to law. Please give us a review and grant a patent as soon as possible.

The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention.

1. . . Long axis

11. . . Rolling groove

2. . . Moving body

twenty one. . . Ontology

211. . . Rolling groove

212. . . Return hole

twenty two. . . Reflow element

221. . . Return channel

twenty three. . . Rolling element

3. . . Stoppers

31. . . Outer kit

310. . . Convex

312A. . . First convex

312B. . . Second convex

311. . . First perforation

312. . . Outer cone

313. . . First division

314. . . Wall

315. . . First flange

3151. . . Through hole

32. . . Inner kit

320. . . Protrusion

320A. . . First protrusion

320B. . . Second protrusion

321. . . Second perforation

3211. . . Inner cone

322. . . Outer torus

323. . . Second division

324. . . Second flange

3241. . . Fixed hole

33. . . Fixing sleeve

331. . . Third perforation

332. . . Impact surface

34. . . Fastener

90. . . Load path

A. . . Reflux path

X. . . Axis direction

The first figure is a combination of the ball screw with the stopper of the present invention.

The second figure is a cross-sectional view of the ball screw with the stopper of the present invention.

The third figure is an exploded view of the block of the present invention.

The fourth figure is an exploded view of the stopper of the present invention which is sleeved on the ball screw.

1‧‧‧ long axis

11‧‧‧ rolling groove

2‧‧‧Mobile

21‧‧‧ body

211‧‧‧ rolling groove

212‧‧‧Return hole

22‧‧‧Reflux components

221‧‧‧ Return Road

23‧‧‧Rolling parts

31‧‧‧Outer kit

310‧‧‧ convex

311‧‧‧First perforation

312‧‧‧ outer cone

314‧‧‧ wall

315‧‧‧First flange

3151‧‧‧through hole

32‧‧‧ inner kit

320‧‧‧protrusion

321‧‧‧Second perforation

3211‧‧‧Inner cone

322‧‧‧ outer annulus

324‧‧‧second flange

3241‧‧‧Fixed holes

33‧‧‧ fixed sets

331‧‧‧ third perforation

332‧‧‧impact surface

34‧‧‧Fixed parts

90‧‧‧Load path

A‧‧‧Return path

X‧‧‧axis direction

Claims (6)

A ball screw with a stopper includes: a long shaft which is elongated, and has a spiral rolling groove on the outer edge surface; a moving body is sleeved on the long axis and is provided with the opposite a rolling groove of the rolling groove, the rolling groove and the rolling groove system form a load path, the two ends of the load path are respectively connected to two ends of a return path to form an infinite loop path; the block is sleeved on the The long shaft, the stopper comprises: an outer sleeve, an inner sleeve and a fixing sleeve, the outer sleeve has a convex portion, the convex portion is provided with a first perforation and an outer conical surface, and the first perforation penetrates the convex portion Providing the long shaft to be in contact with the outer surface of the long shaft, the outer tapered surface is disposed on the outer edge of the convex portion; the inner sleeve has a protruding portion, and the protruding portion is provided with a second perforation, An outer annular surface, the inner edge of the second perforation has an inner conical surface, the outer annular surface is disposed on an outer edge of the protruding portion; the fixing sleeve has a third perforation; wherein the second perforation of the inner sleeve Nesting the protrusion of the outer sleeve such that the inner cone surface and the outer cone surface are in contact with each other, and the inner cone surface and the outer cone surface And the taper of the same inclination direction based, third perforated line of the mounting sleeve disposed outside of the inner sleeve kit annulus, the inner surface of the edge of the third perforated line contact with the outer surface. The ball screw with a block according to claim 1, wherein the outer sleeve is further provided with a first flange protruding outward from a side of the first flange, the first flange a plurality of through holes are formed; the inner sleeve is further provided with a second flange, the protruding portion is outwardly protruded from one side of the second flange, and the second flange is provided with a plurality of opposite sides The fixing hole of the through hole. The ball screw with a block according to claim 2, wherein the block further has a plurality of fixing members, the fixing member is threaded through the through hole and screwed with the fixing hole, when the fixing member is fixed When the direction is rotated, the inner sleeve can be displaced in the direction of the first flange. The ball screw with a stopper according to claim 1, wherein the fixing sleeve has an impact surface with respect to an end surface of the moving body, the impact surface provides the impact of the moving body, and the fixing sleeve has elasticity. The moving body impact force can be absorbed. The ball screw with a stopper according to claim 1, wherein the convex portion is further provided with one or more first dividing portions; and the protruding portion is further provided with one or more second dividing portions. The ball screw with a stopper according to claim 5, wherein the number of the first divided portions is two, and the convex portion is divided into a first convex portion and a second convex portion, so that the first convex portion And a gap between the second convex portions, the number of the second divided portions is two, and the protruding portion is divided into a first protruding portion and a second protruding portion, so that the first protruding portion and There is a gap between the second protrusions.