CN220347274U - Rotary milling device for spiral roller path of large-head hollow ball screw - Google Patents
Rotary milling device for spiral roller path of large-head hollow ball screw Download PDFInfo
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- CN220347274U CN220347274U CN202321923051.2U CN202321923051U CN220347274U CN 220347274 U CN220347274 U CN 220347274U CN 202321923051 U CN202321923051 U CN 202321923051U CN 220347274 U CN220347274 U CN 220347274U
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- ball screw
- milling device
- hollow ball
- rotary milling
- screw
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- 238000003801 milling Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
The utility model discloses a rotary milling device for a spiral raceway of a large-head hollow ball screw, which aims to solve the problems that the outer spiral raceway of an existing ball screw is not consistent with the end spline of the outer spiral raceway, and the conventional assembly method cannot be used for assembly, and the position of the outer spiral raceway of each product is consistent with that of the spline; one end of the big-end hollow ball screw is provided with a spline, the surface of the big-end hollow ball screw is provided with an outer screw channel, the holding rod is connected with the positioning sleeve, and the big-end hollow ball screw is provided with a key slot which is connected with the positioning sleeve through the positioning key; the surface of the rotary milling device is provided with the external screw channel, one end of the rotary milling device is connected with the centering sleeve through the spline, and the other end of the large-head hollow ball screw is connected with the inner hole end face of the inner hole, so that the problem of consistency between the external screw channel of the ball screw and the external spline and the problem of independent tool matching during assembly of the ball nut are solved.
Description
Technical Field
The utility model belongs to a ball screw spiral rollaway nest, and particularly relates to a rotary milling device for a large-head hollow ball screw spiral rollaway nest.
Background
The ball screw is a transmission element for mutually converting rotary motion and linear motion, and has the characteristics of high precision, high efficiency and the like. The machining precision of the outer screw channel of the ball screw can directly influence the transmission efficiency and the positioning precision. Currently, the common external screw way processing mode of the ball screw mainly comprises whirlwind milling, grinding wheel grinding and hard turning; the grinding efficiency of the grinding wheel and the turning processing efficiency of the hard turning are lower, and the period is longer; the cyclone milling is adopted, the rotary milling cutter disc clamps a plurality of rotary milling forming cutters at one time, the rotary milling is qualified directly through one-time clamping, the processed lead precision is high, and the technical requirements can be met.
The large-head hollow ball screw is a ball screw with a special structure, wherein the external shape of the ball screw is provided with steps, the inside of the ball screw is hollow, and the right end of the ball screw is provided with a spline; as shown in fig. 1 and 2; because of the self characteristics of the structure, in the assembly process of the product, the gap of the spline at the end of the ball screw is discontinuous with the outer screw channel, and a gap block is required to be independently matched for completing the assembly with the ball nut during the assembly, but in the batch production, the gap block is required to be matched for completing the assembly once during each assembly due to the fact that the position of the gap block is inconsistent with the position of the spline during each outer screw channel processing, so that the resource waste is caused and the assembly efficiency is reduced; it is therefore necessary to design a milling device for assembly and milling of screw channels (see fig. 3-5).
The multifunctional use is completed, the resource waste is reduced, and the processing and assembling efficiency is improved. The assembly and use diagram of the rotary milling device is shown in fig. 6.
Disclosure of Invention
In order to solve the problems that the outer screw channels of the existing ball screw are not consistent, the conventional assembly method cannot be used for assembly, special tools are needed to be used for repairing, the consistency of the outer screw channels can be guaranteed, the ball nuts are assembled smoothly, and the positions of the outer screw channels and the spline of each product are consistent.
The technical means of the utility model are as follows: the rotary milling device comprises a large-head hollow ball screw, a holding rod, a positioning sleeve, a positioning key, a rotary milling device and a centralizing sleeve;
the large-head hollow ball screw is provided with a spline, an outer screw channel is arranged on the surface of the large-head hollow ball screw, the holding rod is connected with a positioning sleeve, and the large-head hollow ball screw is provided with a key slot which is connected with the positioning sleeve through a positioning key;
the surface of the rotary milling device is provided with an outer screw channel, and one end of the rotary milling device is connected with the inner hole end face of the other end of the large-head hollow ball screw through a spline and is connected with a centralizing sleeve.
The lead of the outer screw channel of the rotary milling device is consistent with that of the outer screw channel of the large-head hollow ball screw.
The rotary milling device is a device with a stepped appearance, external threads, a hollow interior and a spline at one end.
The utility model has the advantages that: the spiral milling device of the spiral raceway of the large-head hollow ball screw is designed based on the characteristics of the outer spiral raceway and the end spline of the ball screw; the problem of the outer screw channel of ball and external spline uniformity problem, the independent frock of joining in marriage when ball nut assembly has been solved. The utility model has simple structure, easy operation, improved processing and assembly efficiency and cost saving.
Drawings
FIG. 1 is a block diagram of a large head hollow ball screw of the present utility model;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a block diagram of a rotary milling apparatus of the present utility model;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is an oblique side view of the milling apparatus of FIG. 3;
FIG. 6 is an assembled view of the rotary milling apparatus of the present utility model;
FIG. 7 is a block diagram of a large-head hollow ball screw rotary milling device according to the utility model;
FIG. 8 is a flow chart of ball screw milling and assembly in accordance with the present utility model;
reference numerals illustrate: 1. a holding rod; 2. a screw; 3. a positioning sleeve; 4. a positioning key; 6. a large-head hollow ball screw; 7. a rotary milling device; 9. centralizing sleeve.
Detailed Description
As shown in fig. 1 to 7:
the utility model relates to a rotary milling device for a spiral raceway of a large-head hollow ball screw, which comprises a large-head hollow ball screw 6, a holding rod 1, a positioning sleeve 3, a positioning key 4, a rotary milling device 7 and a centralizing sleeve 9;
one end of the large-head hollow ball screw 6 is provided with a spline, the surface of the large-head hollow ball screw is provided with an outer screw channel, the clamping rod 1 is connected with the positioning sleeve 3, and the large-head hollow ball screw 6 is provided with a key slot which is connected with the positioning sleeve 3 through the positioning key 4;
the surface of the rotary milling device 7 is provided with an outer screw channel, one end of the rotary milling device 7 is connected with the large-head hollow ball screw 6 through a spline, and the other end of the rotary milling device is connected with a centralizing sleeve 9.
The lead of the outer screw channel of the rotary milling device 7 is consistent with that of the outer screw channel of the large-head hollow ball screw 6.
The rotary milling device 7 is a device with steps, external threads, hollow inside and a spline at one end.
The large-head hollow ball screw 6 is a ball screw with a special structure, wherein the external shape of the ball screw is provided with steps, the inside of the ball screw is hollow, and the right end of the ball screw is provided with a spline; as shown in fig. 1 and 2; because of the self characteristics of the structure, in the product assembly process, the large-head hollow ball screw 6 is provided with a spline notch at the end head and is discontinuous with an external screw channel, and a gap filling block is required to be independently matched during assembly to complete the assembly with the ball nut
When the ball screw and the ball nut are provided with the steel balls, the rotary milling device 7 is required to be installed on the spline of the hollow ball screw 6, and the rotary milling device 7 is installed on the hollow ball screw 6 due to the fact that the external screw channel which is consistent with the lead of the hollow ball screw 6 is processed on the rotary milling device 7 in advance in the rotary milling process, and the rotary milling processing is performed by aligning the external screw channel on the rotary milling device 7. In the assembly process, the outer screw channel of the hollow ball screw 6 is smoothly connected with the outer screw channel of the rotary milling device 7 by adjusting the installation angle position of the rotary milling device, so that the ball nut is ensured to be smoothly installed on the ball screw.
Principle of operation
The processing drawing of the consistency of the spline and the external screw channel of the large-head hollow ball screw 6 is as follows:
the ball screw rotary milling and assembling use rotary milling device 7 is shown in fig. 8, and is described as follows:
the method comprises the steps of taking a rotary milling tool, adding a holding rod, a positioning sleeve, a positioning key, a centralizing sleeve, a screw and a rotary milling device, locking the holding rod 1 with the positioning sleeve 3, and connecting the screw 2 according to the requirements of the drawing, positioning the positioning sleeve with the external aid of the large-head hollow ball screw 6, installing the positioning key 4 into a key slot of the large-head hollow ball screw 6, locking the positioning key through the screw 2, installing the rotary milling device 7 with the spline of the large-head hollow ball screw 6 in place, compacting the end face, locking the screw 2, tightly locking the centralizing sleeve 9 with the positioning screw 2 at the end face of an inner hole of the rotary milling device 7, positioning the rotary milling device 7 in an eight direction, compacting the end face of the large-head hollow ball screw 6, and locking the screw 2; other spin milling tools are qualified in installation;
the large-head hollow ball screw 6 is mounted on a rotary milling machine tool, and is clamped and positioned once, an outer screw channel on a rotary milling device 7 in a centering and centering way is aligned, the outer screw channel of the rotary milling ball screw is qualified, and the roughness and lead error of a rollaway nest are ensured to meet the requirements;
when the ball screw is assembled, the rotary milling device is taken, and the position of the ball screw is adjusted by trial assembly, so that the ball screw is ensured to be smoothly connected with an outer screw channel of the rotary milling device;
and (5) taking the ball nut, and installing the ball nut is qualified. The rotary milling device 7 is then removed and properly stored for further processing and assembly.
According to the spiral milling device for the large-head hollow ball screw spiral raceway, aiming at the end splines of the outer spiral channels of the ball screws, the outer spiral channels are not consistent, the conventional assembly method cannot be used for assembly, special tools are needed to be used for supplementing, consistency of the outer spiral channels is guaranteed, ball nuts are smoothly assembled, and for batch products, consistency requirements on positions of the outer spiral channels and the splines of the ball screws are needed, otherwise, special tools are needed to be matched for each ball screw, so that resource waste is caused, and assembly efficiency is reduced; therefore, a special rotary milling device 7 is adopted in the rotary milling process, so that the consistency of the positions of the external screw channels and the spline of each product is ensured.
Claims (3)
1. The utility model provides a turn-milling device of big hollow ball screw spiral raceway, includes big hollow ball screw (6), its characterized in that: the rotary milling device also comprises a holding rod (1), a positioning sleeve (3), a positioning key (4), a rotary milling device (7) and a centralizing sleeve (9);
one end of the large-head hollow ball screw (6) is provided with a spline, the surface of the large-head hollow ball screw is provided with an external screw channel, the clamping rod (1) is connected with the positioning sleeve (3), and the large-head hollow ball screw (6) is provided with a key slot which is connected with the positioning sleeve (3) through the positioning key (4);
the surface of the rotary milling device (7) is provided with an outer screw channel, one end of the rotary milling device (7) is connected with the inner hole end face of the other end of the large-end hollow ball screw (6) through a spline, and the inner hole end face of the other end of the rotary milling device is connected with a centralizing sleeve (9).
2. A turn-milling device for a spiral raceway of a large-head hollow ball screw as set forth in claim 1, wherein: the lead of the outer screw way of the rotary milling device (7) is consistent with that of the outer screw way of the large-head hollow ball screw (6).
3. A turn-milling device for a spiral raceway of a large-head hollow ball screw as set forth in claim 1, wherein: the rotary milling device (7) is provided with steps, external threads, a hollow interior and a spline at one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321923051.2U CN220347274U (en) | 2023-07-21 | 2023-07-21 | Rotary milling device for spiral roller path of large-head hollow ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321923051.2U CN220347274U (en) | 2023-07-21 | 2023-07-21 | Rotary milling device for spiral roller path of large-head hollow ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220347274U true CN220347274U (en) | 2024-01-16 |
Family
ID=89480525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321923051.2U Active CN220347274U (en) | 2023-07-21 | 2023-07-21 | Rotary milling device for spiral roller path of large-head hollow ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220347274U (en) |
-
2023
- 2023-07-21 CN CN202321923051.2U patent/CN220347274U/en active Active
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