阅读说明：本技术 一种三自由度旋轧机 (Three-freedom-degree rotary rolling machine ) 是由 赵春江 许镱巍 李维壮 白峭峰 周梓朋 王琛 于 2020-08-26 设计创作，主要内容包括：本发明公开一种三自由度旋轧机,包括旋轧辊组件、用于安装旋轧辊组件的环辊支架、用于安装环辊支架的机架、与机架插接的底板座、为旋轧辊组件提供动力的传动组件以及调整组件；机架内侧设置有两组弧形滑槽,环辊支架上设置有与弧形滑槽相适配的弧形滑块；调整机构包括压下顶丝、环辊支架拉紧组、送进角调整顶丝以及机架旋转顶丝；本发明提供了一种同时具有压下、偏摆角和送进角三个自由度的管筒形工件的旋轧机,通过传动组件的齿轮啮合关系,旋轧辊中心轴线与主动锥齿轮轴线垂直、旋轧辊和主动锥齿轮同轴旋转而形成送进角,同时机架绕底板座旋转而形成辊偏摆,以及通过环辊支架平移获得压下自由度。(The invention discloses a three-degree-of-freedom rotary rolling machine which comprises a rotary rolling roller assembly, a ring roller bracket for mounting the rotary rolling roller assembly, a frame for mounting the ring roller bracket, a baseplate seat spliced with the frame, a transmission assembly for providing power for the rotary rolling roller assembly and an adjusting assembly, wherein the ring roller bracket is arranged on the frame; two groups of arc-shaped sliding grooves are arranged on the inner side of the rack, and arc-shaped sliding blocks matched with the arc-shaped sliding grooves are arranged on the ring roller bracket; the adjusting mechanism comprises a pressing jackscrew, a ring roller bracket tensioning set, a feeding angle adjusting jackscrew and a rack rotating jackscrew; the invention provides a rotary rolling machine for a pipe-shaped workpiece with three degrees of freedom of screw-down, deflection angle and feed angle, through the gear meshing relationship of a transmission assembly, the central axis of a rotary rolling roller is vertical to the axis of a drive bevel gear, the rotary rolling roller and the drive bevel gear rotate coaxially to form a feed angle, meanwhile, a frame rotates around a bottom plate seat to form roller deflection, and the screw-down degree of freedom is obtained through translation of a ring roller support.)

1. A three-freedom-degree rotary rolling machine is characterized in that: the rotary rolling device comprises a rotary rolling roller assembly (1), a ring roller bracket (4) for mounting the rotary rolling roller assembly (1), a frame (2) for mounting the ring roller bracket (4), a baseplate seat (3) spliced with the frame (2), a transmission assembly (5) for providing power for the rotary rolling roller assembly (1) and an adjusting assembly; two groups of arc-shaped sliding grooves (2.8) are formed in the inner side of the rack (2), and arc-shaped sliding blocks (4.8) matched with the arc-shaped sliding grooves (2.8) are arranged on the ring roller bracket (4);

the adjusting mechanism comprises a pressing jackscrew (6), a ring roller bracket tensioning set (7), a feeding angle adjusting jackscrew (8) and a rack rotating jackscrew (9); the pressing jackscrew (6) penetrates through the rack (2) to be in contact with the ring roller support (4), and the pressing jackscrew (6) is in threaded connection with the rack (2); the ring roller support (4) is fixedly connected with the rack (2) through a feed angle adjusting jackscrew (8), and the feed angle adjusting jackscrew (8) is in threaded connection with the rack (2); the rack rotating jackscrew (9) penetrates through the bottom plate seat (3) to be abutted against the rack (2), and the rack rotating jackscrew (9) is in threaded connection with the bottom plate seat (3).

2. The three-degree-of-freedom spin-rolling mill according to claim 1, characterized in that: the rotary rolling roller assembly (1) comprises a rotary rolling roller (1.1) and a rotary rolling roller shaft (1.2) fixedly connected with the rotary rolling roller (1.1), and two ends of the rotary rolling roller shaft (1.2) are connected with the ring roller support (4) through bearings.

3. The three-degree-of-freedom spin-rolling mill according to claim 1, characterized in that: the central point of bottom plate seat (3) puts and is provided with through-hole (3.1), be provided with on frame (2) with boss (2.6) of through-hole (3.1) looks adaptation, boss (2.6) are cylindrical, frame (2) can be rotatory around through-hole (3.1).

4. The three-degree-of-freedom spin-rolling mill according to claim 1, characterized in that: the length of the arc-shaped sliding groove (2.8) is greater than that of the arc-shaped sliding block (4.8).

5. The three-degree-of-freedom spin-rolling mill according to claim 1, characterized in that: ring roller support tension group (7) and screw (6) parallel arrangement down, ring roller support tension group (7) include pull rod (7.1) and straining spring (7.2), pull rod (7.1) run through frame (2) and ring roller support (4) fixed connection, straining spring (7.2) are arranged between frame (2) and pull rod (7.1) head.

6. The three-degree-of-freedom spin-rolling mill according to claim 2, characterized in that: the transmission assembly (5) comprises a cylindrical gear (5.1) fixedly connected with the rotary rolling roll shaft (1.2), an intermediate gear (5.2) meshed with the cylindrical gear (5.1), a driven bevel gear shaft (5.3) fixedly connected with the intermediate gear (5.2), a driving bevel gear shaft (5.4) meshed with the driven bevel gear shaft (5.3), a motor (5.6) for providing power and a coupler (5.5) for connecting the driving bevel gear shaft (5.4) and the motor (5.6); the cylindrical gear (5.1), the intermediate gear (5.2) and the driven bevel gear shaft (5.3) are arranged inside the ring roller support (4), and the driving bevel gear shaft (5.4) is connected with the ring roller support (4) and the rack (2) through bearings respectively.

7. The three-degree-of-freedom spin-rolling mill according to claim 1, characterized in that: the maximum rotary outer diameter of the rotary roller (1.1) is larger than that of the cylindrical gear (5.1).

Technical Field

The invention relates to the technical field of spinning and roll forming, in particular to a three-degree-of-freedom spin-rolling machine, and particularly relates to a tubular workpiece.

Background

Spinning and rolling are the main processes for modern processing of industrial pipes and cylindrical thin-walled parts. When the spinning roller and the mandrel axis are set at an alternate angle (feed angle), the skew rolling spinning method is similar to the skew rolling method. The skew rolling spinning process creates a tension that contributes to the axial flow of the metal, with a tendency to pull the blank through the spinning wheel and mandrel gap, reducing to some extent the build-up and expansion of the metal as well as the frictional resistance and residual stress of the workpiece. At present, most of the spinning wheel rotary rolling machines have freedom degrees of radial feeding (pressing), but most of the spinning rolling machining angles are fixed, or the machining angles are adjusted through a spinning wheel deflection angle, and the prior art does not have a spinning machine which has adjusting capabilities of pressing, deflection angle and feeding angle at the same time.

Disclosure of Invention

The invention aims to provide a three-degree-of-freedom rotary rolling machine to solve the problems in the prior art, and provides a rotary rolling machine for a tubular workpiece, which has three degrees of freedom including a pressing angle, a deflection angle and a feeding angle.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a three-degree-of-freedom rotary rolling machine which comprises a rotary rolling roller assembly, a ring roller bracket for mounting the rotary rolling roller assembly, a frame for mounting the ring roller bracket, a baseplate seat spliced with the frame, a transmission assembly for providing power for the roller assembly and an adjusting assembly, wherein the ring roller bracket is fixedly connected with the frame; the inner side of the frame is provided with an arc-shaped sliding groove, and the ring roller support is provided with an arc-shaped sliding block matched with the arc-shaped sliding groove.

The adjusting mechanism comprises a pressing jackscrew, a ring roller bracket tensioning set, a feeding angle adjusting jackscrew and a rack rotating jackscrew; the pressing jackscrew penetrates through the rack and is in contact with the ring roller bracket, and the pressing jackscrew is in threaded connection with the rack; the ring roller support is fixedly connected with the rack through a feed angle adjusting jackscrew, and the feed angle adjusting jackscrew is in threaded connection with the rack; the rack rotating jackscrew penetrates through the bottom plate seat to be abutted against the rack, and the rack rotating jackscrew is in threaded connection with the bottom plate seat.

Preferably, the rotary rolling roller assembly comprises a rotary rolling roller and a rotary rolling roller shaft fixedly connected with the rotary rolling roller, and two ends of the rotary rolling roller shaft are connected with the ring roller support through bearings.

Preferably, the central point of bottom plate seat puts and is provided with the through-hole, be provided with in the frame with the boss of through-hole looks adaptation, the boss is cylindrical, the frame can be rotatory around the through-hole.

Preferably, the length of the arc-shaped sliding chute is greater than that of the arc-shaped sliding block.

Preferably, the ring roller support tensioning set is parallel to the pressing jackscrew, the ring roller support tensioning set comprises a pull rod and a tensioning spring, the pull rod penetrates through the rack and is fixedly connected with the ring roller support, and the tensioning spring is arranged between the rack and the head of the pull rod.

Preferably, the transmission assembly comprises a cylindrical gear fixedly connected with the rotary rolling roll shaft, an intermediate gear meshed with the cylindrical gear, a driven bevel gear shaft fixedly connected with the intermediate gear, a driving bevel gear shaft meshed with the driven bevel gear shaft, a motor for providing power and a coupling for connecting the driving bevel gear shaft and the motor; the cylindrical gear, the intermediate gear and the driven bevel gear shaft are arranged inside the ring roller support, and the driving bevel gear shaft is respectively connected with the ring roller support and the rack through bearings.

Preferably, the maximum revolution outer diameter of the spinning roller is larger than the maximum revolution outer diameter of the cylindrical gear.

The invention discloses the following technical effects: the invention provides a rotary rolling machine for a pipe-shaped workpiece with three degrees of freedom of screw-down, deflection angle and feed angle, through the gear meshing relationship of a transmission component, the central axis of the rotary rolling roller is vertical to the axis of a drive bevel gear, the rotary rolling roller and the drive bevel gear rotate coaxially to form feed angle adjustment, meanwhile, a frame rotates around a bottom plate seat to form roller deflection adjustment, and the screw-down degree of freedom is obtained through translation of a ring roller bracket. Meanwhile, the spatial layout problem of the transmission scheme is solved, so that the mechanism layout of the rotary rolling mill is compact, the space is saved, and the adjustment principle is ingenious and reasonable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view of the construction of a spin-rolling mill according to the present invention;

FIG. 2 is a cross-sectional view of the spin mill of the present invention;

FIG. 3 is a front view of the structure of the spin-rolling mill of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2 in accordance with the present invention;

FIG. 5 is a schematic view of the transmission assembly of the present invention;

FIG. 6 is a schematic structural view of a double-rotation rolling mill;

FIG. 7 is a schematic structural view of a triple-rotation rolling mill.

Wherein, 1 is a spin-rolling roller assembly, 1.1 is a spin-rolling roller, 1.2 is a spin-rolling roller shaft, 2 is a frame, 2.6 is a boss, 2.8 is an arc chute, 3 is a bottom plate seat, 3.1 is a through hole, 4 is a ring roller support, 4.8 is an arc slider, 5 is a transmission assembly, 5.1 is a cylindrical gear, 5.2 intermediate gears, 5.3 is a driven bevel gear shaft, 5.4 is a driving bevel gear shaft, 5.5 is a shaft coupling, 5.6 is a motor, 6 is a pressing jackscrew, 7 is a ring roller support tightening set, 7.1 is a pull rod, 7.2 is a tightening spring, 8 is a feeding angle adjusting jackscrew, 9 is a frame rotating jackscrew, 10 is a workpiece to be machined, and 11 is a core die.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.