CN216801838U - Twisted steel crescent machining device - Google Patents
Twisted steel crescent machining device Download PDFInfo
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- CN216801838U CN216801838U CN202123205348.9U CN202123205348U CN216801838U CN 216801838 U CN216801838 U CN 216801838U CN 202123205348 U CN202123205348 U CN 202123205348U CN 216801838 U CN216801838 U CN 216801838U
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- cutter
- crescent
- thimble
- cutter bar
- bar
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Abstract
The utility model provides a twisted steel crescent processingequipment, is including installing the cutter arbor on the lathe main shaft, install crescent milling cutter on the cutter arbor, one side of crescent milling cutter is equipped with the copper supporting shoe of installing on the cutter arbor, is equipped with the boss on the copper supporting shoe, the cutter arbor upper end is equipped with live center, live center includes top casing, installs the thimble through bearing in the top casing, the thimble upper end is equipped with the dish spring, and the thimble lower extreme is connected with the cutter arbor upper end, still the cover is equipped with thrust ball bearing on the thimble. The movable center is arranged at the upper end of the cutter bar to reduce friction, so that the efficient rotary motion of the cutter bar is fixed; under the condition that the cutter bar is not interfered with the rolling groove, the lug boss is designed on the copper supporting block, so that the supporting surface of the copper supporting block is increased, the processing stability is ensured, the problem of frequent deformation and fracture of the cutter bar is solved, the service life of the cutter bar is prolonged, and the operation rate is improved.
Description
Technical Field
The utility model belongs to the technical field of steel industry reinforcing steel bar thread processing design, and particularly relates to a threaded reinforcing steel bar crescent processing device.
Background
The crescent machining (hereinafter referred to as crescent machining) of the threaded steel bar is the most widely applied crescent machining method in hot rolling of the threaded steel bar. The prior high-Ni ball needle-free shell material roller has poor wear resistance, so that the surface quality of a steel bar is poor, the surface of the steel bar is easy to rust, and the slitting rolling stability is not high. With the gradual maturity of the processing technology of the high-speed roller, the high-speed roller is more and more widely used. The high-speed steel roller has good wear resistance and hardenability, particularly red hardness at high temperature, can effectively improve the stability of rolling material shape, and improve the stability of surface quality and overall dimension of the reinforcing steel bar. Because the hardness of the high-Ni ball needle-free shell material roller is far lower than that of a high-speed steel roller, the original high-speed steel crescent processing efficiency is limited. For studying the crescent processing of the high-speed steel roll, the requirement for the online use of the high-speed steel roll is met, the processing efficiency is further improved, and the hardware problem of crescent processing equipment is solved by carrying out technical transformation on the existing machine tool.
The existing threaded steel bar crescent processing device frequently breaks a cutter rod in the crescent processing process, so that a milling cutter is broken, and a groove is scrapped. Through statistical analysis on fault cutter bars, the fault is found to be caused by the weak position of the cutter bar for installing the milling cutter. The cutter bar diameter of the original design is 7.5mm, and the cutter bar is a fixed center. In the crescent machining process, the cutter bar is in friction with the fixed tip, the resistance is increased, and the effective rotary motion of the cutter bar is influenced. The original copper supporting block can not effectively support the cutter bar, and the cutter bar is deformed and broken due to overlarge stress.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a threaded steel bar crescent processing device, which solves the problem of frequent deformation and fracture of a cutter bar and has the characteristics of prolonging the service life of the cutter bar and improving the operation rate.
According to the technical scheme, the threaded steel bar crescent machining device comprises a cutter bar installed on a machine tool main shaft, a crescent milling cutter is installed on the cutter bar, a copper supporting block installed on the cutter bar is arranged on one side of the crescent milling cutter, a boss is arranged on the copper supporting block, a movable center is arranged at the upper end of the cutter bar and comprises a center shell, a thimble is installed in the center shell through a needle bearing, a disc spring is arranged at the upper end of the thimble, the lower end of the thimble is connected with the upper end of the cutter bar, and a thrust ball bearing is further sleeved on the thimble.
Furthermore, a circular hole is formed in the cutter bar, and one end of the crescent milling cutter is installed in the circular hole.
Advantageous effects
Compared with the prior art, the utility model has the following advantages.
1. The utility model solves the problem of frequent deformation and fracture of the cutter bar and prolongs the service life of the cutter bar;
2. the movable center is designed at the upper end of the cutter bar to reduce friction, so that the efficient rotary motion of the cutter bar is fixed;
3. under the condition that the cutter bar does not interfere with the rolling groove, the lug boss is designed on the copper supporting block, the supporting surface of the copper supporting block is increased, the processing stability is ensured, the problem of frequent deformation and fracture of the cutter bar is solved, the service life of the cutter bar is prolonged, and the operation rate is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the structure at a-a in fig. 1.
Detailed Description
The utility model is further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 and 2, a twisted steel crescent machining device comprises a cutter bar 4 installed on a machine tool main shaft, wherein a crescent milling cutter 2 is installed on the cutter bar 4, a copper supporting block 3 installed on the cutter bar 4 is arranged on one side of the crescent milling cutter 2, a boss 10 is arranged on the copper supporting block 3, a movable center 1 is arranged at the upper end of the cutter bar 4, the movable center 1 comprises a center shell 5, a thimble is installed in the center shell 5 through a needle bearing 7, a disc spring 6 is arranged at the upper end of the thimble, the lower end of the thimble 9 is connected with the upper end of the cutter bar 4, and a thrust ball bearing 8 is further sleeved on the thimble 9.
And a circular hole is formed in the cutter bar 4, and one end of the crescent milling cutter 2 is arranged in the circular hole.
The utility model comprises a movable center 1, a crescent milling cutter 2, a copper supporting block 3 and a cutter bar 4; the cutter bar 4 is arranged on a main shaft of the machine tool, a circular hole is formed in the cutter bar 4, the crescent milling cutter 2 is arranged in the circular hole, and the copper support block 3 is used for supporting the cutter bar 4; the movable center 1 comprises a center shell 5, a disc spring 6, a needle bearing 7, a thrust ball bearing 8 and a thimble 9 and is used for limiting the upper end of the cutter bar 4.
When the tool is implemented specifically, the diameter of the tool bar 4 is 8.5mm, the movable center 1 is fixed at the upper end of the tool bar 4, the movable center 1 comprises a needle roller bearing 7, a thrust ball bearing 8 and a disc spring 6 which are arranged in a center shell 5, and an ejector pin 9 of the movable center 1 and the tool bar 4 do rotary motion together; in addition, the disc spring 6 can eliminate the vibration problem in the crescent processing process, the impact force on the cutter bar 4 in the crescent processing process is reduced, and the problem of frequent deformation and fracture of the cutter bar 4 is solved.
Claims (2)
1. The utility model provides a twisted steel crescent processingequipment, is including installing cutter arbor (4) on the lathe main shaft, its characterized in that, install crescent milling cutter (2) on cutter arbor (4), one side of crescent milling cutter (2) is equipped with copper supporting shoe (3) of installing on cutter arbor (4), is equipped with boss (10) on copper supporting shoe (3), cutter arbor (4) upper end is equipped with live center (1), live center (1) is including top casing (5), installs the thimble through bearing (7) in top casing (5), the thimble upper end is equipped with dish spring (6), and thimble (9) lower extreme is connected with cutter arbor (4) upper end, it has thrust ball bearing (8) to go up still to overlap on thimble (9).
2. The crescent processing device for the twisted steel according to claim 1, wherein a circular hole is formed in the cutter bar (4), and one end of the crescent milling cutter (2) is installed in the circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123205348.9U CN216801838U (en) | 2021-12-20 | 2021-12-20 | Twisted steel crescent machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123205348.9U CN216801838U (en) | 2021-12-20 | 2021-12-20 | Twisted steel crescent machining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216801838U true CN216801838U (en) | 2022-06-24 |
Family
ID=82054332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123205348.9U Active CN216801838U (en) | 2021-12-20 | 2021-12-20 | Twisted steel crescent machining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216801838U (en) |
-
2021
- 2021-12-20 CN CN202123205348.9U patent/CN216801838U/en active Active
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