CN214558804U - Inner hole rolling device - Google Patents

Abstract

The utility model discloses an inner hole rolling device, which relates to the technical field of tools, and the utility model discloses a rolling processing is carried out to the inner wall of a large-size round tube, the utility model discloses a rolling cutter also comprises a vertical lathe, the vertical lathe is provided with a rotating workbench, and a tube to be processed is fixed on the rotating workbench through a chuck; a tool apron is arranged above the rotary processing table, the rolling cutter is horizontally arranged on the tool apron, and the rolling cutter is an outer circle polishing cutter.

Description

Inner hole rolling device

Technical Field

The utility model relates to a technical field of frock specifically is a hole rolling press device.

Background

Rolling is a common processing technique, and is a plastic processing method in which a high-hardness and smooth roller is in rolling contact with a metal surface to cause a local trace plastic deformation of the surface layer to improve the surface roughness.

For the current rolling process, when an inner hole is processed, the current common method is to process the inner hole by an inner circle honing machine tool or a grinding machine; when an external hole is machined, the current common method is to machine through a cylindrical grinding machine or a cylindrical honing machine. However, the rolling process is limited to the diameter of the workpiece, especially the inner bore. When a pipe body structure with the diameter of more than 1 meter is processed, the processing is difficult to carry out, the processing means of finish turning and internal grinding are generally adopted at present, the cost is higher, and the roughness can be reduced and the surface hardness can be improved through one-step rolling processing.

However, as the performance requirements for the workpiece become higher and higher, improvements in response to the demand are needed.

SUMMERY OF THE UTILITY MODEL

In order to roll the inner wall of the large-size circular tube, the utility model provides an inner hole rolling device, which comprises a rolling cutter and a vertical lathe, wherein the vertical lathe is provided with a rotary worktable, and a tube to be processed is fixed on the rotary worktable through a chuck; a tool apron is arranged above the rotary processing table, the rolling cutter is horizontally arranged on the tool apron, and the rolling cutter is an outer circle polishing cutter.

The utility model discloses a further set up to: the bottom of blade holder includes two relative risers, the roll extrusion sword is located between two risers, the handle of a knife of roll extrusion sword is improved level and is arranged and be provided with two at least screw holes, be provided with on the riser with the coaxial relative mounting hole of screw hole, it has the bolt to twist soon in the screw hole, and the bolt runs through the through-hole, and threaded connection has the sleeve pipe on the bolt, and the sleeve pipe sets up in the mounting hole and sheathed tube diameter is unanimous with the diameter of mounting hole.

The utility model discloses a further set up to: the bolt is further screwed with a supporting nut, the supporting nut comprises a hexagonal head and a circular truncated cone protrusion protruding from the hexagonal head to the rolling cutter, and the rolling cutter is provided with a conical surface matched with the circular truncated cone protrusion.

The utility model has the advantages of:

1. the utility model can roll the inner wall of a round pipe with large size;

2. the bolt and the sleeve can be used for accurately and quickly positioning the rolling cutter;

3. by utilizing the supporting nut, the bolt can be fully contacted with the tool shank, and the stress condition of the bolt is improved.

Drawings

FIG. 1 is a schematic structural view of an inner hole rolling device of the present invention;

FIG. 2 is a schematic view of the structure of the bottom of the tool holder of the present invention;

fig. 3 is an exploded view of fig. 2.

Fig. 4 is a schematic structural diagram of the support nut of the present invention.

Reference numerals: 1. a pipe to be processed; 2. a chuck; 3. a tool apron; 31. mounting holes; 4. rolling and pressing a cutter; 41. a threaded hole; 42. a conic surface; 5. a bolt; 6. a sleeve; 7. a support nut; 71. the circular truncated cone is convex.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

The utility model provides an inner hole rolling device, which comprises a rolling cutter 4 and a vertical lathe, wherein the vertical lathe is provided with a rotary workbench, and a pipe 1 to be processed is fixed on the rotary workbench through a chuck 2; a tool apron 3 is arranged above the rotary processing table, a rolling cutter 4 is horizontally arranged on the tool apron 3, and the rolling cutter 4 is an excircle polishing cutter. Cylindrical calendering knives are commonly used in the cylindrical rolling process of pipe structures.

When the rolling cutter 4 is pressed against the inner surface of the pipe 1 to be processed from the inner side, the rolling can be realized by matching the rotation of the rotary worktable.

In addition, the fixing structure of the rolling knife 4 is also specially designed. The existing cutter fixing structure is generally a tight cutter handle directly supported by a jackscrew, but when the structure is fixed, the surface of the bad cutter handle is easily supported by the jackscrew, and after the cutter handle is supported tightly, the friction force between workpieces is relied on for fixing, the stress of the cutter in the rolling process is larger, and because the rolling cutter 4 extrudes the surface of the workpiece, the cutter is easy to loosen and change the position of the cutter due to the action of various factors such as vibration and stress after working for a period of time.

To this end, the utility model discloses in, two screw holes 41 have been seted up on the handle of a knife of roll extrusion sword 4, and screw hole 41 arranges along the length direction of roll extrusion sword 4. The lower end of the tool apron 3 for installing the rolling cutter 4 is provided with two vertical plates, the rolling cutter 4 is positioned between the two vertical plates, and the vertical plates are provided with installation holes 31 which are coaxially opposite to the threaded holes 41. A bolt 5 is screwed into the threaded hole 41, and the bolt 5 penetrates through the through hole. A sleeve 6 is screwed on the bolt 5, the sleeve 6 is arranged in the mounting hole 31, and the diameter of the sleeve 6 is consistent with that of the mounting hole 31.

The core idea of the design is as follows: the tool is fixed by the screw thread, and the fixation of the tool is not influenced by friction any more, but is directly limited by the structure. After the two bolts 5 penetrate through the cutter, the rolling cutter 4 cannot move as long as the bolts 5 do not move, and the accuracy of the position of the cutter is ensured. In addition, if the thread on the bolt 5 directly contacts with the hole wall of the mounting hole 31, the two parts are damaged, and the size of the mounting hole 31 is slightly larger than the diameter of the thread in actual production, so that the bolt 5 is provided with the two sleeves 6, the sleeves 6 are arranged in the mounting hole 31 in a penetrating manner, the sleeves 6 avoid the bolt 5 from directly contacting with the mounting hole 31, and the bolt 5 can be more accurately positioned by matching the sleeves 6 with the mounting hole 31. On the other hand, after the rolling cutter 4 is finally positioned by the sleeve 6 and the bolt 5, the rolling cutter 4 does not need to be corrected, and if the cutter is tightly jacked by a jackscrew in the prior art, the fixing function can be realized, but the arrangement angle of the cutter needs to be adjusted manually, so that the cutter replacement is troublesome.

In addition, the bolt 5 bears the shearing force, the screw is provided with the support nut 7, and the support nut 7 is integrally formed. The support nut 7 comprises a hexagonal head and a circular truncated cone protrusion 71 extending from the hexagonal head towards the rolling cutter 4. The shank of the rolling cutter 4 is provided with a conical curved surface 42 matched with the circular truncated cone bulge 71. Since the support nut 7 is in contact with the shank, the support nut 7 will help the bolt 5 to take up a part of the force of the shank directly on the bolt 5. In addition, due to the matching of the conical curved surface 42, the supporting nut 7 is ensured to be fully contacted with the tool shank, and the situation that the matching is not performed or the interference fit is difficult is avoided.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, various features shown in the various embodiments may be combined in any combination as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, 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, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (3)

1. The utility model provides an inner hole rolling press device, includes rolling sword (4), its characterized in that: the pipe machining device further comprises a vertical lathe, wherein the vertical lathe is provided with a rotary workbench, and the pipe (1) to be machined is fixed on the rotary workbench through a chuck (2); a tool apron (3) is arranged above the rotary processing table, the rolling cutter (4) is horizontally arranged on the tool apron (3), and the rolling cutter (4) is an excircle polishing cutter.

2. The bore rolling device of claim 1, wherein: the bottom of blade holder (3) includes two relative risers, roll sword (4) are located between two risers, the handle of a knife of roll sword (4) is improved level and is arranged and be provided with two at least screw holes (41), be provided with on the riser with screw hole (41) coaxial relative mounting hole (31), it has bolt (5) to twist soon in screw hole (41), and bolt (5) run through the through-hole, and threaded connection has sleeve pipe (6) on bolt (5), and sleeve pipe (6) set up in mounting hole (31) and the diameter of sleeve pipe (6) is unanimous with the diameter of mounting hole (31).

3. The bore rolling device of claim 2, wherein: still twisted on bolt (5) and had support nut (7), support nut (7) include the hexagonal head and follow the hexagonal head to the protruding round platform of hobbing cutter (4) is protruding (71), hobbing cutter (4) be provided with conical surface (42) of the protruding (71) looks adaptation of round platform.

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