Center frame device for titanium tube machining

Abstract

The center frame device for titanium tube machining comprises a sleeve frame fixed to a lathe bed and a sleeve shaft penetrating through the sleeve frame, the sleeve shaft is rotationally installed on the sleeve frame through an angle bearing, and the clearance of the angle bearing is positioned through a distance fixing assembly. The left ends and the right ends of the inner ring and the outer ring of the angle bearing are positioned through a left dustproof positioning assembly and a right dustproof positioning assembly which are fixed to the two ends of the sleeve frame respectively, and a titanium pipe penetrating through and fixed to the sleeve shaft is driven by a machine tool spindle to rotate at a high speed. The utility model provides a rotary support center frame structure which is strong in bearing capacity, high in strength, stable and reliable for the titanium tube detachably fixed on the sleeve shaft, solves the defect that the titanium tube vibrates in the processing process due to the unreasonable design of the traditional center frame support structure, improves the titanium tube support stability, ensures the titanium tube processing precision, and improves the titanium tube processing efficiency. The titanium tube surface roughness is reduced, and the titanium tube machining quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining, specifically relates to a center rest device for titanium pipe machining. BACKGROUND

[0002] Titanium pipe fittings are also called titanium alloy pipe fittings, which are a kind of pipe fittings made of titanium material, have high strength, light weight, high enough heat resistance and low temperature toughness, and good machining performance and welding performance, and are deeply loved by people because of their good comprehensive performance, but the center rest on the traditional machine tool has unreasonable structure design and low strength, causing vibration during titanium pipe machining, low titanium pipe machining precision and problems of affecting titanium pipe surface roughness during use, therefore, it is necessary to improve the above problems. SUMMARY

[0003] The utility model solves the technical problem: provide a kind of center rest device for titanium pipe machining, by optimizing the rotation support structure of titanium pipe, adopt through angular bearing and the left dustproof positioning assembly and right dustproof positioning assembly for positioning angular bearing and be installed on the sleeve shaft reliable rotation in sleeve frame, provide the rotation support center frame structure of strong bearing capacity and high strength, stable and reliable for the titanium pipe of detachable fixed on sleeve shaft, solve the drawback that traditional center rest support structure design is unreasonable and leads to vibration during titanium pipe machining, improve titanium pipe support stability, ensure titanium pipe machining precision, reduce titanium pipe surface roughness, improve titanium pipe machining quality.

[0004] The utility model adopts the technical scheme: center rest device for titanium pipe machining, including sleeve frame fixed on the bed body and the sleeve shaft being set through sleeve frame, the sleeve shaft is rotated and is installed on sleeve frame by angular bearing, and the play of angular bearing is positioned by fixed distance component, the left and right ends of the inner ring and outer ring of angular bearing are positioned by the left dustproof positioning assembly and right dustproof positioning assembly fixed on the both ends of sleeve frame, and titanium pipe is rotated at high speed under the drive of machine tool spindle and is fixed on sleeve shaft.

[0005] Wherein, the sleeve frame includes base and sleeve, the base upper end is fixedly connected with the bottom of horizontally arranged sleeve, the angular bearing is adapted to be installed between sleeve and sleeve shaft and is positioned on sleeve shaft.

[0006] Further, the fixed distance component includes fixed distance outer sleeve and fixed distance inner sleeve, the fixed distance inner sleeve is sleeved on sleeve shaft and is used for the fixed distance of angular bearing inner ring, and the fixed distance outer sleeve that is sleeved on fixed distance inner sleeve is used for the fixed distance of angular bearing outer ring.

[0007] Further, the left dustproof positioning assembly comprises a left end cover in a ring structure, the right end of the left end cover is adapted to the stepped large hole in the left end of the sleeve and is fixed on the left end surface of the sleeve via a plurality of circumferentially distributed bolts, the right end of the left end cover abuts against the left end surface of the outer ring of the angular bearing, and the dustproof inner protruding ring arranged on the inner hole wall of the left end of the left end cover is located outside the dustproof outer protruding ring on the outer circumferential wall of the sleeve shaft, and the inner ring of the angular bearing is positioned on the stepped surface of the sleeve shaft.

[0008] Further, the right dustproof positioning assembly comprises a right end cover and a locking nut, the locking nut is connected with the outer thread on the outer circumferential wall of the right end of the sleeve shaft and abuts against the right end of the inner ring of the angular bearing, the right end cover is in a T-shaped sleeve structure with a stepped hole, the stepped surface of the right end cover contacts the right end surface of the sleeve shaft and is fixed on the right end surface of the sleeve shaft via a plurality of circumferentially distributed bolts, the small diameter section of the left end of the right end cover is located inside the sleeve and abuts against the right end surface of the outer ring of the angular bearing, and the locking nut is located inside the large hole section of the stepped hole of the right end cover and realizes the dustproof function under the cooperation of the stepped surface of the stepped hole of the right end cover and the right end surface of the locking nut.

[0009] Further, the titanium pipe is fixed on the sleeve shaft via a plurality of jackscrews arranged on the outer circumferential wall of the left end of the sleeve shaft.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] 1. The technical scheme optimizes the rotating support structure of the titanium pipe, adopts the left dustproof positioning assembly and the right dustproof positioning assembly for positioning the angular bearing and reliably rotates and installs the sleeve shaft on the sleeve frame, provides a rotating support center frame structure with high bearing capacity, high strength and stability for the titanium pipe which is detachably fixed on the sleeve shaft, and solves the vibration problem of the titanium pipe in the machining process caused by the unreasonable design of the traditional center frame support structure.

[0012] 2. The technical scheme utilizes the cooperation structure of the dustproof inner protruding ring on the left end cover and the dustproof outer protruding ring on the sleeve shaft and the cooperation structure of the right end cover and the locking nut, provides reliable dustproof conditions for the angular bearing between the sleeve and the sleeve shaft, ensures the clean working environment of the angular bearing, and improves the service life of the angular bearing.

[0013] 3. The technical scheme has the advantages of simple structure, novel design, convenient and fast disassembly and assembly, easy maintenance, low cost, meeting the support requirements of the high-speed rotation of the titanium pipe, improving the support stability of the titanium pipe, ensuring the machining precision of the titanium pipe, reducing the surface roughness of the titanium pipe, and improving the machining quality of the titanium pipe. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Fig. 2 It is an internal structure schematic view of the utility model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the utility model. Figs. 1-2 The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the utility model.

[0017] It should be noted that, in this article, without making the opposite description, it needs to be understood that: the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0018] In this article, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations. The element defined by the sentence "including a..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0019] The center frame device for titanium pipe processing is, for example, Figs. 1-2As shown, including fixed on the sleeve frame 1 and through the sleeve frame 1 set sleeve shaft 2, the sleeve shaft 2 is rotatably mounted on the sleeve frame 1 through the angular bearing 3, and the angular bearing 3 is positioned by the fixed distance assembly, the left and right ends of the angular bearing 3 inner and outer rings are positioned by the left and right dustproof positioning assembly fixed on the both ends of the sleeve frame 1, and the titanium tube fixed on the sleeve shaft 2 is driven by the machine tool spindle to realize high speed rotation; Specifically, the titanium tube is fixed on the sleeve shaft 2 by a plurality of top wires provided on the outer circumferential wall of the left end of the sleeve shaft 2; in the above structure, by optimizing the rotary support structure of the titanium tube, the sleeve shaft 2 is reliably rotatably mounted on the sleeve frame 1 by the angular bearing 3 and the left and right dustproof positioning assembly fixed on the left and right ends of the sleeve frame 1 and used for positioning the angular bearing 3, which provides a strong load bearing capacity and high strength, stable and reliable rotary support center frame structure for the titanium tube which can be detachably fixed on the sleeve shaft 2, and solves the problem of vibration of the titanium tube in the machining process caused by the unreasonable design of the traditional center frame support structure.

[0020] As shown in the figure, Figs. 1-2 The specific structure of the sleeve frame 1 is as follows: the sleeve frame 1 comprises a base 1-1 and a sleeve 1-2, the upper end of the base 1-1 is fixedly connected with the bottom of the horizontally arranged sleeve 1-2, the angular bearing 3 is adaptively installed between the sleeve 1-2 and the sleeve shaft 2 and is positioned on the sleeve shaft 2, and the base 1-1 is fixed on the bed by bolts.

[0021] As shown in the figure, Fig. 2 The specific structure of the fixed distance assembly is as follows: the fixed distance assembly comprises a fixed distance outer sleeve 4 and a fixed distance inner sleeve 5, the fixed distance inner sleeve 5 is sleeved on the sleeve shaft 2 and is used for positioning the inner ring of the angular bearing 3, and the fixed distance outer sleeve 4 which is sleeved on the fixed distance inner sleeve 5 is used for positioning the outer ring of the angular bearing 3; wherein the size of the angular bearing 3 play is determined by the thickness of the fixed distance inner sleeve 4 and the fixed distance outer sleeve.

[0022] As shown in the figure, Fig. 2 The specific structure of the left dustproof positioning assembly is as follows: the left dustproof positioning assembly comprises a left end cover 6 in ring structure, the right end of the left end cover 6 is adaptively arranged in the stepped large hole of the left end of the sleeve 1-2 and is fixed on the left end face of the sleeve 1-2 by a plurality of circumferentially distributed bolts, the right end of the left end cover 6 abuts against the left end face of the outer ring of the angular bearing 3, the dustproof inner convex ring 7 provided on the left end inner hole wall of the left end cover 6 is located outside the dustproof outer convex ring 8 on the outer circumferential wall of the sleeve shaft 2, and the inner ring left end of the angular bearing 3 is positioned on the stepped face of the sleeve shaft 2.

[0023] As shown in the figure, Fig. 2As shown, the specific structure of the right dustproof positioning assembly is as follows: the right dustproof positioning assembly is positioned and comprises a right end cover 9 and a locking nut 10, the locking nut 10 is connected with external threads on the outer circumferential wall of the right end of the sleeve shaft 2 and abuts against the right end of the inner ring of the angular bearing 3, the right end cover 9 is a T-shaped sleeve structure with a stepped hole in the inner hole, the stepped surface of the right end cover 9 is in contact with the right end surface of the sleeve shaft 2 and is fixed on the right end surface of the sleeve shaft 2 through a plurality of circumferentially distributed bolts, the small diameter section of the left end of the right end cover 9 is located in the sleeve 1-2 and abuts against the right end surface of the outer ring of the angular bearing 3, and the locking nut 10 is located inside the large hole section of the stepped hole of the right end cover 9 and realizes the dustproof function under the cooperation of the stepped surface of the right end cover 9 and the right end surface of the locking nut 10.

[0024] In the structure, the cooperation of the dustproof inner convex ring 7 on the left end cover 6 and the dustproof outer convex ring 8 on the sleeve shaft 2 and the cooperation of the right end cover 9 and the locking nut 10 provide reliable dustproof conditions for the angular bearing 3 arranged between the sleeve 1-2 and the sleeve shaft 2, so as to ensure a clean working environment for the angular bearing 3 and improve the service life of the angular bearing;

[0025] The technical solution has the advantages of simple structure, novel design, convenient and fast disassembly and assembly, easy maintenance, low cost, ability to meet the support requirements of high-speed rotation of the titanium pipe, improved stability of the titanium pipe support, ensured machining precision of the titanium pipe, reduced surface roughness of the titanium pipe and improved machining quality of the titanium pipe.

[0026] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A center rest device for titanium tube machining, characterized by: The sleeve frame (1) is fixed on the machine bed, and the sleeve shaft (2) is arranged through the sleeve frame (1). The sleeve shaft (2) is rotatably installed on the sleeve frame (1) through the angular bearing (3), and the clearance of the angular bearing (3) is positioned by the fixed distance assembly. The left and right ends of the inner and outer rings of the angular bearing (3) are respectively positioned by the left dustproof positioning assembly and the right dustproof positioning assembly fixed on the two end portions of the sleeve frame (1). The titanium pipe fixed on the sleeve shaft (2) rotates at high speed under the drive of the machine tool spindle.

2. The titanium tube processing mandrel apparatus of claim 1, wherein: The sleeve frame (1) comprises a base (1-1) and a sleeve (1-2). The upper end of the base (1-1) is fixedly connected with the bottom of the horizontally arranged sleeve (1-2). The angular bearing (3) is fitted and installed between the sleeve (1-2) and the sleeve shaft (2) and is positioned on the sleeve shaft (2).

3. The titanium tube processing mandrel apparatus of claim 2, wherein: The fixed distance assembly comprises a fixed distance outer sleeve (4) and a fixed distance inner sleeve (5). The fixed distance inner sleeve (5) is sleeved on the sleeve shaft (2) and is used for positioning the inner ring of the angular bearing (3). The fixed distance outer sleeve (4) with a large distance is sleeved on the fixed distance inner sleeve (5) and is used for positioning the outer ring of the angular bearing (3).

4. The titanium tube processing mandrel apparatus of claim 3, wherein: The left dustproof positioning assembly comprises a left end cover (6) in a ring structure. The right end of the left end cover (6) is fitted into the stepped large hole on the left end of the sleeve (1-2) and is fixed on the left end face of the sleeve (1-2) through a plurality of circumferentially distributed bolts. The right end portion of the left end cover (6) abuts against the left end face of the outer ring of the angular bearing (3). The dustproof inner convex ring (7) arranged on the inner hole wall of the left end of the left end cover (6) is located outside the dustproof outer convex ring (8) arranged on the outer circumferential wall of the sleeve shaft (2). The left end of the inner ring of the angular bearing (3) is positioned on the stepped face of the sleeve shaft (2).

5. The titanium tube machining mandrel apparatus of claim 4, wherein: The right dustproof positioning assembly comprises a right end cover (9) and a locking nut (10). The locking nut (10) is fitted and connected with the external thread on the outer circumferential wall of the right end of the sleeve shaft (2) and abuts against the right end portion of the inner ring of the angular bearing (3). The right end cover (9) is in a T-shaped sleeve structure with a stepped hole in the inner hole. The stepped face of the right end cover (9) contacts the right end face of the sleeve shaft (2) and is fixed on the right end face of the sleeve shaft (2) through a plurality of circumferentially distributed bolts. The small diameter section of the left end of the right end cover (9) is located in the sleeve (1-2) and abuts against the right end face of the outer ring of the angular bearing (3). The locking nut (10) is located in the large hole section of the stepped hole of the right end cover (9) and realizes the dustproof function under the cooperation of the stepped face of the stepped hole of the right end cover (9) and the right end face of the locking nut (10).

6. The titanium tube machining mandrel apparatus of any of claims 1-5, wherein: The titanium pipe is fixed on the sleeve shaft (2) through a plurality of jackscrews arranged on the left end outer circumferential wall of the sleeve shaft (2).

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