TWI728326B - A ball scew with the matching effect of a circulator - Google Patents

Abstract

The invention provides a ball screw with the matching effect of a circulator including a screw, a nut, and a ball. The main features of it is a nut sleeved on the screw, and a thread groove corresponding to the inner part of the screw and the outer part of the screw respectively, where the ball installed in. Inside the nut is provided with a circulation passage axially, and the two ends of the outer surface are respectively provided with installation holes and fixing holes corresponding to the screw grooves. The circulator is disposed in the installation hole and a return passage is inside it. There is a first end and a second end inside the return passage; and the first end is connected to the circulation passage; and the second end is connected to the thread groove. The guiding ball moves between the thread groove and the circulation passage; the forced guiding portion is arranged on the outer surface of the circulation and is facing the fixing hole. A fixing member is provided with a screw locking portion, a head portion and a receiving portion; and the screw locking portion is screwed to the fixing hole, and the head portion presses the forced guiding portion.

Description

Ball screw with alignment effect for circulator

The present invention relates to a ball screw; in particular, it refers to an innovative structure of a circulator in which the nut of the ball screw is provided with an alignment effect.

Currently on the market, ball screws are usually equipped with circulators. In the industry, ball screw circulators are divided into side plug type, external circulation type, and internal circulation type. The rotation is converted into linear transmission, and the circulator is installed on the nut; the balls are moved by the circulator, so that the balls and the nut and the ball screw are matched with each other to reduce the friction between the nut and the ball screw. The ball screw runs more smoothly, and the present invention mainly discusses a side plug type ball screw in the form of a circulator which is radially assembled from the outside of the nut cap body.

However, this type of conventional structure still finds some problems in practical application experience. For example, because the circulator is assembled from the outside of the nut cap body radially toward the cap body, and the circulator itself is due to the return channel. , The outlet and inlet of the return channel must be accurately aligned with the load path and return path opened on the cap body to avoid noise and temperature rise caused by deviation. Therefore, the circulator body will be used during production. And the assembling part of the nut cap body is set into a non-circular shaped block with a consistent appearance, thereby producing an alignment effect; this makes the production of the circulator body difficult, and the nut cap body The assembly part is also very time-consuming and difficult to process.

Therefore, in view of the above-mentioned problems of the conventional ball screw technology, how to develop an innovative structure that can be more ideal and practical is really waiting for the relevant industry to think about the goal and direction of the breakthrough; in view of this, the inventor Based on years of experience in manufacturing, development and design of related products, after detailed design and careful evaluation for the above goals, we finally have a practical invention.

The main purpose of the present invention is to provide a ball screw with an alignment effect for the circulator. The technical problem to be solved is how to develop a new type of circulator with more ideal practicality and an alignment effect. Think about innovative breakthroughs for the goal.

Based on the foregoing objectives, the technical feature of the present invention to solve the problem is mainly that the ball screw system with the aligning effect of the circulator includes: a screw, a nut, a plurality of balls, the nut is sleeved on the screw, and the screw The inside of the cap and the outside of the screw are respectively provided with continuously corresponding thread grooves for a plurality of balls to be installed in. The inside of the nut is provided with a circulation channel along the axial direction. The two ends of the outer surface are respectively provided with mounting holes corresponding to the thread grooves. A fixed hole, the section of the installation hole is a perfect circle; a circulator, each of the circulators is installed in the installation hole, and the circumference of the circulator and the installation hole coincide with each other, and there is a return channel inside, the return channel It has a first end and a second end. The first end communicates with the circulation channel, and the second end communicates with the thread groove to guide the ball to move between the thread groove and the circulation channel; a forced guiding part is arranged in the circulation channel. The outer surface of the device faces the fixing hole; a fixing piece has a screw lock part, a head, and a moving part. The screw lock part is screwed in the fixing hole of the nut, and the head presses the forced guide part.

The main effects and advantages of the present invention are that the main body of the circulator and the mounting hole in the nut cap body are set into a shape with a consistent appearance and a perfect circle, so that the production unit can process and manufacture the nut cap body. When installing holes, it can greatly improve the advantages of manufacturing and processing easier and practical progress.

Another object of the present invention is to have a forced guiding part relationship on the outer surface of the circulator, so that the head of the fixing part will press the forced guiding part to guide the circulator along the way when the fixing part is screwed. Align the direction of the contour of the mounting hole, so as to achieve the practical advancement of the alignment effect.

A: Ball screw

01: screw

02: nut

03: Ball

04: Thread groove

05: Circulation channel

10: Mounting hole

20: Fixing hole

21: Thread section

22: Head containing section

30: Circulator

31: Return channel

311: first end

312: second end

32: The first loop block

321: concave joint

33: second loop block

331: convex joint

34: The first channel slot

35: second channel slot

40: Forced Guidance Department

50: fixed parts

51: screw lock part

52: head

53: Receiving Department

Figure 1 is a combined perspective view of a preferred embodiment of the present invention. (Note: partial perspective)

Figure 2 is a top view of the preferred embodiment of the present invention.

Figure 3 is a 3-3 cross-sectional view of Figure 2.

Figure 4 is a diagram of an embodiment of the present invention in use.

Figure 5 is a diagram of an embodiment of the present invention in use.

Figure 6 is a diagram of an embodiment of the groove type of the present invention.

Figure 7 is a diagram of an embodiment of the concave arc type of the present invention.

Fig. 8 is a diagram of an embodiment of the chamfered plane type of the present invention.

Figure 9 is an exploded perspective view of the circulator assembly of the present invention.

Figure 10 is a cross-sectional view of the circulator assembly of the present invention installed on the nut.

Please refer to Figures 1 to 3, the circulator of the present invention has an alignment effect The preferred embodiments of the ball screw of the fruit, but these embodiments are for illustrative purposes only, and are not limited by this structure in the patent application.

The ball screw A includes the following components: a screw 01, a nut 02, and a plurality of balls 03. The nut 02 is sleeved on the screw 01, and the inside of the nut 02 and the outside of the screw 01 have separate A thread groove 04 corresponding to each other continuously is used for a plurality of balls 03 to be installed in it. The nut 02 is provided with a circulation channel 05 along the axial direction, and the two ends of the outer surface correspond to the thread groove 04 respectively with mounting holes. 10 and a fixing hole 20, the section of the mounting hole 10 is a perfect circle (Note: the mounting hole 10 can be a cylinder or a cone, so that the rotating forming knife (drilling) directly opens the mounting hole 10); Circulator 30, each of the circulators 30 is installed in the installation hole 10, and the circumference of the circulator 30 and the installation hole 10 coincide with each other (Note: the circulator 30 corresponding to the installation hole 10 can be a cylinder or a cone ), the circulator 30 has a return passage 31 inside, the return passage 31 has a first end 311 and a second end 312, wherein the first end 311 communicates with the circulation passage 05, the second end 312 is connected The thread groove 04 is used to guide the ball 03 to move between the thread groove 04 and the circulation channel 05; a forced guiding part 40 is arranged on the outer surface of the circulator 30 and faces the fixing hole 20; The member 50 has a screw-locking portion 51, a head 52, and a moving portion 53, the screw-locking portion 51 is screw-locked in the fixing hole 20 provided in the nut 02, and the head 52 compresses the forced导导部40.

As shown in Figure 4, in this example, the fixing hole 20 has a threaded section 21 and a head accommodating section 22. The screw lock portion 51 of the fixing member 50 is provided on the threaded section 21, and the fixing member The head 52 provided at 50 is disposed on the head accommodating section 22, and when the fixing hole 20 has the threaded section 21 and the head accommodating section 22 at the same time, the forced guiding portion 40 and the head accommodating section 22 are connected to each other; the embodiment of this embodiment is mainly for illustration, because the fixing hole 20 also has the screw The pattern section 21 and the head accommodating section 22, so the forced guiding portion 40 and the head accommodating section 22 are in communication with each other, so that the head 52 of the fixing member 50 can press the forced guiding portion 40.

With the above-mentioned structural composition and technical characteristics, the ball screw A with the aligning effect of the circulator 30 disclosed in the present invention is actually used as shown in Fig. 4. The two ends of the outer surface of the nut 02 are formed by forming cutters. When the diameter is adapted to the diameter of the preset installation hole 10, the two ends of the outer surface of the nut 02 correspond to the thread grooves 04, and the installation holes 10 are respectively opened, so that the circulator 30 is installed in the installation hole 10. And the outer surface of the circulator 30 has a forced guiding part 40 and faces the fixing hole 20; it can be seen that the disclosure of the present invention is mainly provided by the body of the circulator 30 and the mounting hole 10 of the nut 02 cap body Form a block with a consistent appearance and a round shape, so that the production unit can process the mounting hole 10 of the nut 02 cap body, so as to greatly improve the production and make the processing easier; moreover, as shown in Figure 5. As shown, at this time, the screw lock portion 51 of the fixing member 50 is screwed to the threaded section 21 of the fixing hole 20 and the head 52 of the fixing member 50 sinks into the head receiving section 22 of the fixing member 50, and the circulator 30 is The round shaped block can be inserted into the installation hole 10 in any angle direction. The circulator 30 may be slightly deflected during the installation process of the installation hole 10, but it can still be inserted into the installation hole 10. Because the outer surface of the circulator 30 has the relationship of the forced guiding part 40, the head 52 of the fixing part 50 will press the forced guiding part 40 to guide the circulator 30 along the installation when the fixing member 50 is screwed. The contour direction of the hole 10 is aligned, so as to achieve an alignment effect and allow the ball 03 to move smoothly between the threaded groove 04, the circulator 30 and the return channel 31.

As shown in Figures 6 to 8, in this example, the forced guide portion 40 is in any of a concave arc, groove, or oblique plane; in this example, one of the forced guide portions 40 is provided. The purpose is to use any of the grooves (as shown in Fig. 6), concave arcs (as shown in Fig. 7), and oblique planes (as shown in Fig. 8) of the forced guiding part 40, The head 52 of the fixing member 50 presses the forced guiding portion 40 to make the circulator 30 achieve an alignment effect.

As shown in Figures 9 to 10, in this example, the circulator 30 has a first circulation block 32 and a second circulation block 33. The first circulation block 32 is provided with a first channel groove 34, and the second circulation block The block 32 is provided with a second channel groove 35, the second circulation block 33 presses the first circulation block 32, and the outer surface of the second circulation block 33 has a forced guiding portion 40; and in this example, the The first circulation block 32 is provided with a concave joint portion 321, and the second circulation block 33 is provided with a convex joint portion 331. When the concave joint portion 321 and the convex joint portion 331 engage with each other, the first channel groove 34 and the first channel groove 34 are The two channel grooves 35 constitute a return channel 31, the return channel 31 has a first end 311 and a second end 312, the first end 311 communicates with the circulation channel 05, and the second end 312 is communicated with the thread groove 04, It is used to guide the ball 03 to move between the thread groove 04 and the circulation channel 05.

A: Ball screw

01: screw

02: nut

03: Ball

04: Thread groove

05: Circulation channel

10: Mounting hole

20: Fixing hole

30: Circulator

31: Return channel

311: first end

312: second end

40: Forced Guidance Department

50: fixed parts

Claims (6)

A ball screw with a circulator having a aligning effect. The ball screw includes: a screw, a nut, and a plurality of balls. The nut is sleeved on the screw, and the inside of the nut and the outside of the screw are respectively continuous A thread groove corresponding to each other is used for installing a plurality of balls. The nut has a circulation channel along the axial direction. The two ends of the outer surface are respectively provided with mounting holes and fixing holes corresponding to the thread grooves. The cross-section of the set hole is a perfect circle; the circulator, each of the circulators is installed in the installation hole, and the circumference of the circulator and the installation hole coincide with each other, the circulator has a backflow channel inside, and the backflow channel has a A first end and a second end, wherein the first end communicates with the circulation channel, and the second end is connected to the thread groove to guide the ball to move between the thread groove and the circulation channel; a forced The guide part is arranged on the outer surface of the circulator and faces the fixing hole; a fixing part is provided with a screw lock part, a head, and a moving part, and the screw lock part is screw-locked to the nut. Inside the hole, and the head presses the forced guiding part. As described in the first item of the scope of patent application, the circulator has a ball screw with a aligning effect, wherein the forced guiding part is any of a concave arc, a groove, and a chamfered plane. The circulator described in item 1 or 2 of the scope of patent application has a ball screw with alignment effect, wherein the circulator has a first circulation block and a second circulation block, and the first circulation block is provided with a first channel groove, The second circulation block is provided with a second channel groove, the second circulation block presses the first circulation block, and the outer surface of the second circulation block has a forced guiding part. As described in item 3 of the scope of patent application, the circulator has a ball screw with an alignment effect, wherein the first circulation block is provided with a concave joint and the second circulation block is provided with a convex joint, and the concave joint and the convex When the molded parts are mutually engaged, the first channel groove and the second channel groove form a return channel. The return channel has a first end and a second end. The first end communicates with the circulation channel, and the second end is connected to the circulation channel. It is connected to the thread groove and is used to guide the ball to move between the thread groove and the circulation channel. The circulator described in item 1 of the scope of patent application has a ball screw with a aligning effect, wherein the fixed hole has a threaded section and a head accommodating section, and the screw lock portion of the fixing member is provided on the threaded section, The head of the fixing member is arranged on the head accommodating section, and when the fixing hole has both the threaded section and the head accommodating section, the forced guiding part and the head accommodating section communicate with each other. As described in item 4 of the scope of patent application, the circulator has a ball screw with an alignment effect, wherein the fixed hole has a threaded section and a head accommodating section, and the screw lock portion of the fixing member is provided on the threaded section, The head of the fixing member is arranged on the head accommodating section, and when the fixing hole has both the threaded section and the head accommodating section, the forced guiding part and the head accommodating section communicate with each other.

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