CN210423626U - Internal spline ball screw pair - Google Patents
Internal spline ball screw pair Download PDFInfo
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- CN210423626U CN210423626U CN201920939231.7U CN201920939231U CN210423626U CN 210423626 U CN210423626 U CN 210423626U CN 201920939231 U CN201920939231 U CN 201920939231U CN 210423626 U CN210423626 U CN 210423626U
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- receiving groove
- lead screw
- ball screw
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Abstract
The utility model is suitable for a belong to transmission element technical field, provide an internal spline ball screw is vice, including big lead screw, big screw nut, little lead screw and little screw nut. The utility model discloses an internal spline ball screw pair structure can realize a motor drive, connects the motor in the one end of little lead screw or big lead screw, can realize the function of rotation and lift simultaneously, very big expansion the application of this product field. And simultaneously, the utility model discloses an internal spline ball screw is vice, is on ordinary ball screw's basis, and the change structure forms, and its lead screw nut's mounting flange's size equals the size of ordinary ball screw nut flange, and the price is low, under the condition that does not influence ball screw's precision and life-span, can realize batch production and sell, also can realize the non-system of marking, very big reduction the purchase processing cost of product, break the situation of the vice extra income monopoly of spline ball screw.
Description
Technical Field
The utility model belongs to the technical field of the drive element, especially, relate to an internal spline ball is vice.
Background
The ball screw pair is formed by matching a screw rod and a nut, and is a very common transmission device with higher precision in transmission machinery. In the precision transmission structure that needs rotation and lift simultaneously, the spline lead screw is the most suitable selection, and the spline ball screw on the market is all vice for external splines ball screw at present, and the flange size of ball screw nut is very big moreover, and the price is high, can not realize the effect of customization.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an internal spline ball screw is vice is provided, it is big to aim at solving the vice nut flange size of external spline ball screw among the prior art, and the price is high, can not realize the problem of customization.
The utility model discloses a realize like this, an internal spline ball screw pair, including big lead screw, big lead screw nut, little lead screw and little lead screw nut, big lead screw nut cover locate the outer peripheral edges of big lead screw, and with big lead screw transmission connection, little lead screw nut cover locate the outer peripheral edges of little lead screw, and with little lead screw transmission connection; an embedded hole is formed in the large lead screw along the axial direction, one end, close to the large lead screw, of the small lead screw is an embedded end, the embedded end of the small lead screw penetrates through the embedded hole, and a transmission structure is mounted on the embedded end of the small lead screw; the projections of the transmission structure and the outer contour of the embedded end on the radial plane of the small screw rod are in a flower shape, and the flower shape is formed by overlapping a square shape and a circular shape at the same center; the shape of the radial section of the embedding hole is matched with that of the flower shape; the small lead screw or the big lead screw is driven by the power source, and the small lead screw and the big lead screw can synchronously rotate or do axial relative motion.
Furthermore, the projection of the transmission structure on the radial plane of the small lead screw is square, and the transmission structure is located at the end position of the embedded end of the small lead screw.
Furthermore, the embedding hole is a through hole which penetrates through the large screw rod along the axial direction of the large screw rod.
Furthermore, a left accommodating groove and a right accommodating groove which are arranged oppositely from left to right are formed in the periphery of the first position of the embedded end of the small lead screw, and an upper accommodating groove and a lower accommodating groove which are arranged oppositely from top to bottom are formed in the periphery of the second position; the first position and the second position are distributed at intervals along the axial direction of the small screw rod; cylindrical supporting bodies are fixed in the left accommodating groove, the right accommodating groove, the upper accommodating groove and the lower accommodating groove.
Further, the radial cross section of the support body is annular.
Furthermore, the diameter of the supporting body is smaller than that of the small screw rod, and the thickness of the supporting body is smaller than the depth of the left accommodating groove, the right accommodating groove, the upper accommodating groove and the lower accommodating groove.
Furthermore, a first mounting hole is formed between the left accommodating groove and the right accommodating groove, the support piece in the left accommodating groove and the right accommodating groove is arranged in the first mounting hole in a penetrating mode through a first connecting piece to achieve connection, a second mounting hole is formed between the upper accommodating groove and the lower accommodating groove, and the support piece in the left accommodating groove and the right accommodating groove is arranged in the second mounting hole in a penetrating mode through a second connecting piece to achieve connection.
Compared with the prior art, the utility model, beneficial effect lies in:
the utility model discloses an internal spline ball screw is vice, on ordinary ball screw's basis, the change structure forms, and its lead screw nut's mounting flange's size equals the size of ordinary ball screw nut flange, and the price is low, under the condition that does not influence ball screw's precision and life-span, can realize batch production and sell, also can realize the non-system of marking, very big reduction the purchase processing cost of product, break the situation of the vice extra income monopoly of spline ball screw. And simultaneously, the utility model discloses an internal spline ball screw substructure can realize a motor drive, connects the motor in the one end of little lead screw or big lead screw, can realize the function of rotation and lift simultaneously, very big expansion the application of this product.
Drawings
Fig. 1 is a schematic perspective view of an internal spline ball screw pair provided in an embodiment of the present invention;
FIG. 2 is an exploded schematic view of the internally splined ball screw assembly of FIG. 1;
FIG. 3 is another exploded schematic view of the internally splined ball screw assembly of FIG. 1;
FIG. 4 is a schematic longitudinal cross-sectional view of the internally splined ball screw set of FIG. 1;
FIG. 5 is a schematic right side view of a large lead screw of the internally splined ball screw assembly of FIG. 1;
FIG. 6 is a left side schematic view of a small lead screw of the internally splined ball screw set of FIG. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Please refer to fig. 1 to fig. 3, which illustrate an internal spline ball screw assembly provided by the present invention, which includes a large screw 1, a large screw nut 2, a small screw 3 and a small screw nut 4.
The outer peripheral edges of big lead screw 1 are located to 2 covers of big lead screw nut to be connected with the transmission of big lead screw 1, the outer peripheral edges of little lead screw 3 are located to 4 covers of little lead screw nut, and are connected with the transmission of little lead screw 3, and specific transmission connection structure can adopt the connection structure of current lead screw nut and lead screw, and it is not repeated here.
The inside of big lead screw 1 has seted up embedded hole 11 along its axial direction, and in this embodiment, embedded hole 11 is the through-hole that runs through big lead screw 1 along the axial direction of big lead screw 1. One end of the small screw rod 3 close to the large screw rod 1 is an embedded end 31, and the embedded end 31 of the small screw rod 3 penetrates through the embedded hole 11.
Referring to fig. 4 to 6, a transmission structure is mounted on the embedded end 31 of the small lead screw 3; the transmission structure and the projection of the outer contour of the embedded end 31 on the radial plane of the small screw rod 3 are in a flower shape, and the flower shape is formed by overlapping a square shape and a circular shape at the same center; the shape of the radial section of the embedding hole 11 matches the shape of the flower. Because the flower-shaped embedding hole has both a round structure and a square structure, the small screw rod 3 or the large screw rod 1 can synchronously rotate with the large screw rod 1 or do axial relative motion under the driving of a power source.
Further, the projection of the transmission structure on the radial plane of the small lead screw 3 is square, and is located at the end position of the embedded end 31.
The embodiment exemplifies a specific implementation structure of the following transmission structure: a left accommodating groove and a right accommodating groove which are arranged oppositely left and right are formed on the periphery of the first position 311 of the embedded end 31 of the small screw rod 3, and an upper accommodating groove and a lower accommodating groove which are arranged oppositely up and down are formed on the periphery of the second position 312; the first position 311 and the second position 312 are distributed at intervals along the axial direction of the small screw 3; cylindrical supporting bodies 5 are fixed in the left accommodating groove, the right accommodating groove, the upper accommodating groove and the lower accommodating groove. Preferably, the radial cross section of the support body 5 is circular. The diameter of the support body 5 is smaller than that of the small screw rod 3, and the thickness of the support body 5 is smaller than the depth of the left accommodating groove, the right accommodating groove, the upper accommodating groove and the lower accommodating groove. It is understood that the above-mentioned transmission structure is only for illustrating one implementation form, and besides, other structure forms capable of forming a square projection on the radial section of the small screw rod 3 are within the protection scope of the present embodiment.
In order to fix the supporting body 5 in each empty accommodating groove, a first mounting hole 3111 is formed between the left accommodating groove and the right accommodating groove, the supporting member 5 in the left accommodating groove and the right accommodating groove is inserted into the first mounting hole 3111 through a first connecting member (not shown in the figure) to realize connection, a second mounting hole 3121 is formed between the upper accommodating groove and the lower accommodating groove, and the supporting member 5 in the left accommodating groove and the right accommodating groove is inserted into the second mounting hole 3121 through a second connecting member to realize connection. It is easy to understand that, besides the connecting members and the mounting holes, the supporting members 5 can be fixedly mounted in the empty slots by means of bonding or the like.
The internal spline ball screw pair of this embodiment is on ordinary ball screw's basis, and the change structure forms, and the size of its lead screw nut's mounting flange equals the size of ordinary ball screw nut flange, and the price is low, under the condition that does not influence ball screw's precision and life-span, can realize batch production and sell, also can realize not marking the system, very big reduction the purchase processing cost of product, break the situation of the vice extra income monopoly of spline ball screw. Simultaneously, the vice structure of internal spline ball screw of this embodiment can realize a motor drive, connects the motor in the one end of little lead screw 3 or big lead screw 1, can realize the function of rotation and lift simultaneously, very big expansion the application of this product.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The internal spline ball screw pair is characterized by comprising a large screw, a large screw nut, a small screw and a small screw nut, wherein the large screw nut is sleeved on the outer periphery of the large screw and is in transmission connection with the large screw; an embedded hole is formed in the large lead screw along the axial direction, one end, close to the large lead screw, of the small lead screw is an embedded end, the embedded end of the small lead screw penetrates through the embedded hole, and a transmission structure is mounted on the embedded end of the small lead screw; the projections of the transmission structure and the outer contour of the embedded end on the radial plane of the small screw rod are in a flower shape, and the flower shape is formed by overlapping a square shape and a circular shape at the same center; the shape of the radial section of the embedding hole is matched with that of the flower shape; the small lead screw or the big lead screw is driven by the power source, and the small lead screw and the big lead screw can synchronously rotate or do axial relative motion.
2. The internally splined ball screw set of claim 1, wherein the projection of the drive structure onto the radial plane of the small screw is square at the end of the insertion end of the small screw.
3. The internally splined ball screw set of claim 1, wherein the inlay hole is a through hole passing through the large screw in an axial direction of the large screw.
4. The internally splined ball screw assembly of any one of claims 1 to 3, wherein the periphery of the first position of the insertion end of the small screw is provided with a left receiving groove and a right receiving groove which are oppositely arranged left and right, and the periphery of the second position is provided with an upper receiving groove and a lower receiving groove which are oppositely arranged up and down; the first position and the second position are distributed at intervals along the axial direction of the small screw rod; cylindrical supporting bodies are fixed in the left accommodating groove, the right accommodating groove, the upper accommodating groove and the lower accommodating groove.
5. The internally splined ball screw set of claim 4, wherein the radial cross-section of the support body is circular.
6. The internally splined ball screw assembly of claim 5, wherein the support body has a diameter less than a diameter of the small screw, and wherein the support body has a thickness less than a depth of the left receiving groove, the right receiving groove, the upper receiving groove, and the lower receiving groove.
7. The internally splined ball screw assembly of claim 4, wherein a first mounting hole is defined between the left receiving groove and the right receiving groove, the support members in the left receiving groove and the right receiving groove are connected by a first connecting member inserted into the first mounting hole, a second mounting hole is defined between the upper receiving groove and the lower receiving groove, and the support members in the left receiving groove and the right receiving groove are connected by a second connecting member inserted into the second mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920939231.7U CN210423626U (en) | 2019-06-20 | 2019-06-20 | Internal spline ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920939231.7U CN210423626U (en) | 2019-06-20 | 2019-06-20 | Internal spline ball screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423626U true CN210423626U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920939231.7U Active CN210423626U (en) | 2019-06-20 | 2019-06-20 | Internal spline ball screw pair |
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| CN (1) | CN210423626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273994A (en) * | 2019-06-20 | 2019-09-24 | 深圳市世椿智能装备股份有限公司 | A kind of internal spline ball screw assembly, |
-
2019
- 2019-06-20 CN CN201920939231.7U patent/CN210423626U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273994A (en) * | 2019-06-20 | 2019-09-24 | 深圳市世椿智能装备股份有限公司 | A kind of internal spline ball screw assembly, |
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