TWI480479B - Ball screw with return plate - Google Patents

Description

Ball screw with reflow plate

The invention is a ball screw, in particular a ball screw with a reflow plate.

Please refer to the first figure and the second figure, which are a ball screw system diagram and a combination diagram of a conventional reflowing sheet, the ball screw system comprises: a screw (1), and the outer edge surface is provided with a spiral rolling. a groove (11); a nut (2) provided with a through hole (21) through which the screw (1) is inserted, the inner edge surface of the hole (21) being provided with a rolling relative to the rolling groove (11) a groove (211), and a groove (212) of the inverted shape body, wherein the groove (212) forms a plurality of independent C-shapes of the shape of the rolling groove (211) which is originally continuous spiral shape; a reflowing sheet (3) having a rectangular parallelepiped shape, the reflowing sheet (3) being provided with a plurality of return channels (31), the two ends of the returning channel (31) being respectively associated with the independent C-shaped rolling groove ( The two ends of the 211) are connected to form a complete circuit, and the rolling groove (211) and the rolling groove (11) form a load path, and a plurality of rolling elements (4) are provided therein, however, the nut (2) Since the groove (212) provided for the reflow sheet (3) has two angles of 90 degrees because of the inverted shape, it cannot be achieved by the tool processing, and the groove must be processed by wire cutting to form the groove. The shape of the font The groove, but the wire cutting process has a low working efficiency for a long time, so the cost of the nut processing is also increased, and the delivery period is extended, so that it is necessary to improve.

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 nut structure for a reflow sheet that can be machined.

In order to achieve the above object, the present invention is a ball screw with a reflow sheet, comprising: a plurality of rolling elements; a screw which is elongated into a long strip structure in one direction, defining the direction as an axial direction, the outer edge of the screw The surface is provided with a spiral rolling groove, and the portion between the spiral rolling grooves is defined as a tooth peak; a nut having a through hole for the screw to be pierced, and the inner edge surface of the hole is provided with a spiral shape a rolling groove and a receiving groove, the rolling groove is disposed with respect to the rolling groove, the rolling groove and the rolling groove form a load path, the rolling system is disposed on the load path, and the receiving groove is a continuous spiral shaped rolling groove Cutting a plurality of independent C-shapes, defining a plurality of C-shaped rolling grooves at both ends of the first end and the second end; a reflow sheet is disposed in the pocket, the reflow sheet is provided with a plurality of return channels, Defining a plurality of ends of the return channel are respectively a third end and a fourth end, the end is engaged with the third end, the second end is coupled to the fourth end, and the return channel crosses the tooth peak of the screw Where the axis of the pocket is two An arcuate line having a first portion, the first curved line portion is an arc shape.

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. .

Prior art

(1)‧‧‧ screw

(11) ‧ ‧ rolling groove

(2)‧‧‧ Nuts

(21)‧‧‧Perforation

(211)‧‧‧ rolling trough

(212) ‧‧‧ 容容

(3) ‧‧‧Reflow tablets

(31) ‧‧‧ Return Road

this invention

(1)‧‧‧ screw

(11) ‧ ‧ rolling groove

(12) ‧‧‧ tooth peak

(2)‧‧‧ Nuts

(21)‧‧‧Perforation

(211)‧‧‧ rolling trough

(2111) ‧ ‧ first end

(2112) ‧ ‧ second end

(212) ‧‧‧ 容容

(2121) ‧‧‧First curved section

(3) ‧‧‧Reflow tablets

(31)‧‧‧Second curved part

(32) ‧‧ ‧Return

(321) ‧ ‧ third end

(322) ‧ ‧ fourth end

(90)‧‧‧Load path

(X)‧‧‧Axis direction

The first figure is a system diagram of the ball screw of the previous tool reflow.

The second figure is a combination of the ball screws of the previous tool reflow.

The third figure is a system diagram of the ball screw with reflow sheet of the present invention.

The fourth figure is a combination view of the ball screw with a reflow sheet of the present invention.

The fifth figure is a combination view of a nut cross section and a screw perspective of the ball screw with a reflow piece according to the present invention.

Figure 6 is a cross-sectional view showing the transverse direction of the ball screw with the reflow sheet of the present invention.

Figure 7 is a cross-sectional view showing the direction of the ball screw shaft of the recirculating sheet of the present invention.

A preferred embodiment will be further described below in conjunction with the drawings to further illustrate the components and functions of the present invention. The brief description of each drawing is as follows:

The third figure is a system diagram of the ball screw with reflow sheet of the present invention.

The fourth figure is a combination view of the ball screw with a reflow sheet of the present invention.

The fifth figure is a combination view of a nut cross section and a screw perspective of the ball screw with a reflow piece according to the present invention.

Figure 6 is a cross-sectional view showing the transverse direction of the ball screw with the reflow sheet of the present invention.

Figure 7 is a cross-sectional view showing the direction of the ball screw shaft of the recirculating sheet of the present invention.

3 to 7 are drawings of a preferred embodiment of the present invention. The present invention is a ball screw with a reflow sheet, comprising: a screw (1) and a nut (2) a reflowing sheet (3) and a plurality of rolling elements (4); the plurality of rolling elements (4) may be balls or rollers, this embodiment is a ball; the screw (1) is elongated into a strip in one direction a structure defining the direction as the axial direction (X), the outer edge surface of the screw (1) is provided with a spiral rolling groove (11), and the portion between the spiral rolling grooves (11) is defined as a tooth Peak (12); the snail a cap (2) having a through hole (21) through which the screw (1) is disposed, the inner edge surface of the through hole (21) is provided with a spiral rolling groove (211) and a receiving groove (212), the rolling The groove (211) is disposed relative to the rolling groove (11), and the rolling groove (211) and the rolling groove (11) constitute a load path (90), and the rolling body (4) is disposed on the load path (90) The pocket (212) cuts the continuous spiral-shaped rolling groove (211) into a plurality of independent C-shapes, and defines a plurality of C-shaped rolling grooves (211) at opposite ends of the first end (2111) And the second end (2112), as shown in the third and sixth figures, the two sides of the pocket (212) have a first curved portion (2121), and the first curved portion The contour of (2121) is approximately curved with the shape of the cutter for machining the pocket (212). In addition, it is noted that the pocket (212) exemplified in this embodiment has two, but if only The provision of a pocket (212) is also within the scope of the present invention, and two pockets (212) are provided, and an angle between the two pockets (212) (the angle of the embodiment is 180 degrees), which is mainly The purpose is to facilitate processing because the length of the nut (2) When the tool is machined through the slot (212) of the nut, the machining accuracy is lowered. This is because when the length of the tool is extended too long, the tool may cause problems such as a knife or a break. Therefore, in this embodiment, the pocket (212) is divided into two and has an angle with each other, and the two slots (212) are respectively processed from both ends of the nut (2), so that the cutter can be shortened. The length is to avoid the reduction of the machining precision, and the design of the receiving groove (212) of the embodiment is applied to the long-length nut (2). If the nut (2) is short, the design is not required, that is, the machining is performed. The retentate (212) can be implemented; the reflow plate (3) is disposed in the cuvette (212), and the reflow plate (3) is provided with a plurality of return channels (32) defining a plurality of return channels (32) The ends are the third end (321) and the fourth end respectively (322), the first end (2111) is coupled to the third end (321), the second end (2112) is coupled to the fourth end (322), and the return channel (32) spans the a tooth peak (12) of the screw (1). In this embodiment, the two sides of the axial direction (X) of the reflow sheet (3) have a second curved portion with respect to the first curved portion (2121) ( 31), and the second curved portion (31) may be formed by a tool processing method, or the reflow sheet (3) is manufactured by plastic injection molding, and the first curved portion (2121) and the second curved portion are formed by the first curved portion (2121) and the second curved portion (31) fixing the reflow sheet (3) to the pocket (212) in a tight fit manner; however, the axial direction (X) of the reflow sheet (3) may be a right angle or other shape, without It must be matched with the contour of the first curved portion (2121), and the reflowing sheet (3) can be fixed by screwing or gluing.

In order to clearly illustrate the implementation features of the present invention, the following description of the preferred and practical aspects of the present invention is as follows:

The nut groove of the nut of the invention is designed by the outer structure, so that the tool can be processed and formed without using a wire cutting method, thereby saving processing cost and shortening processing time.

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)‧‧‧ screw

(11) ‧ ‧ rolling groove

(2)‧‧‧ Nuts

(21)‧‧‧Perforation

(211)‧‧‧ rolling trough

(212) ‧‧‧ 容容

(2121) ‧‧‧First curved section

(3) ‧‧‧Reflow tablets

(31)‧‧‧Second curved part

(32) ‧‧ ‧Return

(90)‧‧‧Load path

Claims (2)

A ball screw with a reflow piece, comprising: a plurality of rolling elements; a screw extending into a long strip structure in one direction, defining the direction as an axial direction, the outer edge surface of the screw being provided with a spiral rolling groove, and The portion between the spiral rolling grooves is defined as a tooth peak; a nut having a through hole for the screw, the inner edge surface of the hole is provided with a spiral rolling groove and at least one groove, the rolling The groove is disposed relative to the rolling groove, and the rolling groove and the rolling groove form a load path. The rolling system is disposed on the load path, and the groove is formed by cutting the spiral groove into a plurality of independent C-shapes. Defining a plurality of C-shaped rolling grooves at both ends of the first end and the second end respectively; at least one reflow sheet is disposed in the pocket, the reflow sheet is provided with a plurality of return passages, and the plurality of return passages are respectively defined a third end and a fourth end, the first end is engaged with the third end, the second end is engaged with the fourth end, and the return channel crosses the tooth peak of the screw; wherein the cavity The two sides of the axis direction have the first a first curved portion having an arc shape; wherein a contour of the first curved portion is similar to an outer shape of a cutter for processing the pocket; wherein the reciprocating sheet has both sides on an axial direction thereof a second curved portion opposite the first curved portion. The ball screw with a reflow piece according to claim 1, wherein the number of the grooves is two, and the two grooves have an angle between the two.