CN205436610U - Cold rolling mill core bar and clamping device thereof - Google Patents
Cold rolling mill core bar and clamping device thereof Download PDFInfo
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- CN205436610U CN205436610U CN201521057724.6U CN201521057724U CN205436610U CN 205436610 U CN205436610 U CN 205436610U CN 201521057724 U CN201521057724 U CN 201521057724U CN 205436610 U CN205436610 U CN 205436610U
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- core bar
- blade tooth
- rolling mill
- cold
- connecting portion
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Abstract
The utility model relates to a seamless steel pipe production instrument field, concretely relates to cold rolling mill core bar and clamping device thereof, a cold rolling mill core bar, include, the connecting portion of the body of rod and body of rod one end, wherein, the body of rod includes, realizes the connection of dismantlement formula through the screw thread between the cylindrical section and the circle conic section that link to each other with connecting portion, cylindrical section and circle conic section, the cylindrical section is provided with convenient to detach's centre gripping district, the external diameter of connecting portion is less than the external diameter of cylindrical section, be provided with the rectangular channel on the connecting portion, arrange the grooving row along core bar axial direction parallel, a cold rolling mill core bar clamping device, , which includes, jack catch in cassette and the cassette, the jack catch includes corpus unguis and blade tooth, the blade tooth leans on the rectangle piece to core bar one end for setting up at the corpus unguis, the blade tooth is arranged along core bar axial direction parallel, the degree of depth that highly is greater than the rectangular channel of blade tooth, interval between the blade tooth equals with the interval of rectangular channel, the blade tooth is its width according to its array orientation's distance, the width and the width of rectangular channel according to its array orientation of blade tooth equal.
Description
Technical field
This utility model relates to seamless steel tube production field of tool, is specifically related to a kind of cold-rolling mill core bar and clamping device thereof.
Background technology
Cold-rolling mill is widely used in the device of seamless steel pipe processing, core bar and clamping device thereof are the important component parts of cold pilger mill, during rolling, core bar chuck drive core bar intermittence is turned round and is fixed core bar in the rolling direction and makes its not play, and it is current, during cold-rolling mill claw in the course of the work clamping core bar draw-in groove, claw and core bar locating slot can not effectively be matched for clamping tightly, thus cause core bar play the most front and back in the course of the work, affect the quality of product.Such as, disclosed in CN202921645U, a kind of cold-rolling mill mandrel structure discloses a kind of simple in construction, the plug that operation of rolling resistance is little.But, its still existence in work process can not effectively clamp, and during use, the problem of easy play front and back, have impact on the quality of steel pipe.
Utility model content
The purpose of this utility model, is the problem in order to solve in background technology, it is provided that a kind of cold-rolling mill core bar and clamping device thereof.
Above-mentioned technical purpose of the present utility model has the technical scheme that
A kind of cold-rolling mill core bar, including, the body of rod and the connecting portion of body of rod one end, wherein, the described body of rod includes, the cylindrical section being connected with connecting portion and conical section, realizes being detachably connected with by screw thread between described cylindrical section and conical section；Described cylindrical section is provided with easy-to-dismount clamp area, and the external diameter of described connecting portion, less than the external diameter of described cylindrical section, connecting portion is provided with rectangular channel, described along core bar axially in parallel arrangement grooving row.Arranging of conical section can effectively reduce axially loaded, so that axial play power reduces, the rectangular channel of connecting portion can be strengthened switching performance, reduce play further.
As preferably, described groove shows three row, uniform at the circumferencial direction of described connecting portion, effective cooperation three-jaw claw.
As preferably, described each groove row include 8～16 described rectangular channels, strengthen connective stability further.
As preferably, described clamp area is hexagon, coordinates the instruments such as spanner during convenient dismounting.
A kind of cold-rolling mill core bar clamping device, including, claw in deck and deck, described claw includes corpus unguis and blade tooth, and blade tooth is to be arranged on described corpus unguis to be close to the rectangular block of core bar one end, and described blade tooth is along the axially in parallel arrangement of core bar, the height of described blade tooth is more than the degree of depth of described rectangular channel, spacing between described blade tooth is equal with the spacing of described rectangular channel, and described blade tooth is its width by the distance of its orientation, and the width of blade tooth is equal by the width of its orientation with described rectangular channel.Good clamping core bar, it is to avoid core bar play.
As preferably, the two ends on the length direction of described blade tooth are provided with oblique angle, in order to preferably to embed in described rectangular channel.
As preferably, the quantity of the blade tooth that described corpus unguis is arranged is 3～6, it is ensured that the stability of connection, has certain modulability simultaneously.
As preferably, what described corpus unguis arranged blade tooth is provided with the inclined-plane adjusted to side.
In sum, the beneficial effects of the utility model:
A kind of cold-rolling mill core bar the most described in the utility model and clamping device, claw and core bar connecting portion column-shaped blade tooth and the cooperation of rectangular channel so that in work process, claw can effectively be matched for clamping tightly with core bar, make the core bar will not front and back play, it is ensured that product quality.
A kind of cold-rolling mill core bar the most described in the utility model, switching performance is good, detachably, can effectively reduce axially loaded, reduce axial float.
Accompanying drawing explanation
Fig. 1 is package assembly schematic diagram of the present utility model；
Fig. 2 is the structural representation of cold-rolling mill core bar in this utility model；
Fig. 3 is the structural representation of claw in this utility model；
Fig. 4 is the structural representation of cold-rolling mill core bar clamping device in this utility model.
Detailed description of the invention
Specific examples below is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in right of the present utility model.
With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment 1:
According to Fig. 1～Fig. 4, a kind of cold-rolling mill core bar 1, including, the connecting portion 11 of the body of rod and body of rod one end, wherein, the body of rod includes, the cylindrical section 12 being connected with connecting portion and conical section 13, realizes being detachably connected with by screw thread between cylindrical section 12 and conical section 13；Cylindrical section 12 is provided with easy-to-dismount clamp area 121, and the external diameter of connecting portion 11, less than the external diameter of cylindrical section 12, connecting portion 11 is provided with rectangular channel 111, along core bar 1 axially in parallel arrangement grooving row 112.Arranging of conical section 13 can effectively reduce axially loaded, so that axial play power reduces, the rectangular channel 111 of connecting portion 11 can be strengthened switching performance, reduce play further.Groove row 112 have three row, uniform at the circumferencial direction of connecting portion 11, effective cooperation three-jaw claw.Each groove row 112 include 8～16 rectangular channels 111, strengthen connective stability further.Clamp area 121 is hexagon, coordinates the instruments such as spanner during convenient dismounting.
A kind of cold-rolling mill core bar clamping device, including, the claw 2 of 3 in deck 3 and deck, claw 2 includes corpus unguis 21 and blade tooth 22, and blade tooth 22 is to be arranged on corpus unguis 21 to be close to the rectangular block of core bar 1 one end, and blade tooth 22 is along the axially in parallel arrangement of core bar 1, the height of blade tooth 22 is more than the degree of depth of rectangular channel 111, spacing between blade tooth 22 is equal with the spacing of rectangular channel 111, and blade tooth 22 is its width by the distance of its orientation, and the width of blade tooth 22 is equal by the width of its orientation with rectangular channel 111.Good clamping core bar 1, it is to avoid core bar 1 play.Two ends on the length direction of blade tooth 22 are provided with oblique angle, in order to preferably to embed in rectangular channel 111.The quantity of the blade tooth 22 arranged on corpus unguis 21 is 3～6, it is ensured that the stability of connection, has certain modulability simultaneously.Arrange blade tooth 22 on corpus unguis 21 is provided with the inclined-plane adjusted to side.
Claims (8)
1. a cold-rolling mill core bar (1), including, the connecting portion (11) of the body of rod and body of rod one end, it is characterized in that, the described body of rod includes, the cylindrical section (12) being connected with connecting portion and conical section (13), realizes being detachably connected with by screw thread between described cylindrical section (12) and conical section (13)；Described cylindrical section (12) is provided with easy-to-dismount clamp area (121), the external diameter of described connecting portion (11) is less than the external diameter of described cylindrical section (12), being provided with rectangular channel (111) on connecting portion (11), described rectangular channel (111) arranges (112) along core bar (1) axially in parallel arrangement grooving.
A kind of cold-rolling mill core bar the most according to claim 1, it is characterised in that described groove row (112) has three row, uniform at the circumferencial direction of described connecting portion (11).
A kind of cold-rolling mill core bar the most according to claim 2, it is characterised in that described each groove row (112) includes 8～16 described rectangular channels (111).
A kind of cold-rolling mill core bar the most according to claim 1, it is characterised in that described clamp area (121) are hexagon.
null5. a cold-rolling mill core bar clamping device，For clamping the cold-rolling mill core bar described in any one of claim 1-4，Cold-rolling mill core bar clamping device includes，Claw (2) in deck (3) and deck (3) is characterized in that，Described claw (2) includes corpus unguis (21) and blade tooth (22)，Blade tooth (22) is close to the rectangular block of core bar (1) one end for being arranged on described corpus unguis (21)，Described blade tooth (22) is along core bar (1) axially in parallel arrangement，The height of described blade tooth (22) is more than the degree of depth of described rectangular channel (111)，Spacing between described blade tooth (22) is equal with the spacing of described rectangular channel (111)，Described blade tooth (22) is its width by the distance of its orientation，The width of blade tooth (22) is equal by the width of its orientation with described rectangular channel (111).
A kind of cold-rolling mill core bar clamping device the most according to claim 5, it is characterised in that the two ends on the length direction of described blade tooth (22) are provided with oblique angle.
A kind of cold-rolling mill core bar clamping device the most according to claim 5, it is characterised in that the quantity of the upper blade tooth (22) arranged of described corpus unguis (21) is 3～6.
8. according to a kind of cold-rolling mill core bar clamping device described in claim 6 or 7, it is characterised in that arrange blade tooth (22) on described corpus unguis (21) is provided with the inclined-plane adjusted to side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521057724.6U CN205436610U (en) | 2015-12-18 | 2015-12-18 | Cold rolling mill core bar and clamping device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521057724.6U CN205436610U (en) | 2015-12-18 | 2015-12-18 | Cold rolling mill core bar and clamping device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205436610U true CN205436610U (en) | 2016-08-10 |
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ID=57181177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521057724.6U Active CN205436610U (en) | 2015-12-18 | 2015-12-18 | Cold rolling mill core bar and clamping device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205436610U (en) |
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2015
- 2015-12-18 CN CN201521057724.6U patent/CN205436610U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |