Centering tool for vertical lathe of conical thin-wall part and vertical lathe

Abstract

The utility model belongs to the technical field of part machining. In order to solve the problem that clamping is difficult when an existing vertical lathe is used for machining a conical thin-wall part, the utility model discloses a centering tool for vertical turning of the conical thin-wall part and the vertical lathe, the tool comprises a supporting frame, and the supporting frame is provided with a bearing face matched with the large end face of the conical thin-wall part so as to bear the conical thin-wall part; the centering pressing sleeve is provided with a centering hole with at least one open end; the centering hole is configured to at least accommodate the end part corresponding to the small end surface of the conical thin-wall part; the open end of the centering hole is provided with a positioning face coaxial with the axis of the outer conical face of the conical thin-wall part. The clamping mechanism is connected with the centering pressing sleeve and can be linked with the centering pressing sleeve, so that the positioning surface is in contact with the outer conical surface of the conical thin-wall part; wherein the positioning surface is an inner conical surface matched with an outer conical surface of the conical thin-wall part. The tool is simple in overall structure and easy to operate, and therefore the machining efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of parts processing, and in particular relates to a centering tool for vertical lathe of tapered thin-walled parts and a vertical lathe. Background Art

[0002] At present, it is very difficult to determine the clamping position of rotating cone sleeve parts during turning, especially for low-toughness thin-walled cone sleeve parts.

[0003] When processing such parts, thin-walled conical parts are easily deformed during clamping and have a conical shape, so they cannot be clamped using general fixtures (three-jaw chuck or four-jaw chuck).

[0004] At present, four lugs are usually spot-welded on conical thin-walled parts, and then the parts are aligned by dialing. When tightening, the operator's hand needs to enter through the hole on the small end face of the thin-walled part and tighten the bolts with a wrench, which is difficult to operate and affects the quality of the processed products and production efficiency. Utility Model Content

[0005] In view of the problem that the above-mentioned existing vertical lathes have difficulty in clamping when processing tapered thin-walled parts, the utility model discloses a centering tool for vertical turning of tapered thin-walled parts and a vertical lathe, which has a simple overall structure and is easy to operate, thereby helping to improve processing efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A vertical vehicle centering tool for a tapered thin-walled part comprises a support frame having a bearing surface matched with a large end surface of the tapered thin-walled part to bear the tapered thin-walled part; a centering sleeve having a centering hole with at least one end open; the centering hole being configured to at least accommodate an end portion corresponding to a small end surface of the tapered thin-walled part; a positioning surface contacting and positioning with an outer conical surface of the tapered thin-walled part at the open end of the centering hole, the inner diameter of the positioning surface being smaller than the outer diameter of the large end surface; and a clamping mechanism connected to the centering sleeve and capable of linking the centering sleeve to bring the positioning surface into contact with the outer conical surface of the tapered thin-walled part.

[0008] Wherein, the positioning surface is an inner conical surface that matches the outer conical surface of the conical thin-walled part.

[0009] In one of the technical solutions disclosed in the present utility model, the inner diameter of the positioning surface is larger than the outer diameter of the small end surface.

[0010] In one of the technical solutions disclosed in the present utility model, the positioning surface includes a plurality of circular arc segments distributed in a circumference.

[0011] In one of the technical solutions disclosed in the utility model, the centering sleeve is conical; a tapered hole with a gradually decreasing aperture is provided from the large end face of the centering sleeve toward the small end face; the taper of the tapered hole is the same as the taper of the outer tapered surface of the tapered thin-walled part to form the centering hole.

[0012] In one of the technical solutions disclosed in the utility model, a through hole is provided at the center of the small end surface of the centering sleeve.

[0013] In one of the technical solutions disclosed in the present utility model, the clamping mechanism includes: a positioning shaft, which is arranged on the support frame; and a bolt, which is threadedly connected to the positioning shaft.

[0014] In one of the technical solutions disclosed in the present utility model, one end of the positioning shaft connected to the bolt extends through the through hole to the outside of the small end surface of the centering sleeve.

[0015] In one of the technical solutions disclosed in the present utility model, an open washer is provided between the bolt and the centering sleeve.

[0016] In one of the technical solutions disclosed in the utility model, a plurality of hollow grooves are provided on the small end surface of the centering sleeve along the circumference of the through hole.

[0017] The utility model also discloses a vertical lathe having a centering tool for vertical lathe of tapered thin-walled parts as described in any one of the above technical solutions; wherein the support frame is connected to the rotating worktable of the vertical lathe.

[0018] From the above description, it can be seen that the beneficial effects of the utility model are:

[0019] 1. The centering of the part is achieved through a centering sleeve having a positioning surface coaxial with the axis of the outer cone surface of the conical thin-walled part, and fixed by a clamping mechanism, thereby realizing the clamping of the conical thin-walled part. The overall structure is simple and easy to operate, which solves the problem of difficult clamping and alignment when processing such parts, thereby providing a practical and low-cost solution for efficient and stable turning of such parts, and has strong practicality.

[0020] 2. The positioning surface is an inner cone, which can improve the clamping stability of conical thin-walled parts; at the same time, the positioning surface has three arc segments evenly distributed around the circumference, which can not only reduce the influence of the large cone diameter tolerance on the positioning accuracy when stamping parts, but also reduce the deformation of parts during pressing.

[0021] 3. The fasteners are clamped by threaded positioning shafts and bolts. The structure is simple and easy to operate, and the self-locking performance is good, which can meet the production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the centering pressing sleeve of the utility model.

[0025] Figure numerals: 1-support frame; 2-centering sleeve; 21-centering hole; 211-positioning surface; 212-through hole; 213-hollow groove; 3-clamping mechanism; 31-positioning shaft; 32-bolt; 33-open washer; 4-parts. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0032] The utility model discloses a fixture for vertical lathe machining of tapered thin-walled parts, as shown in the attached Figure 1 and attached Figure 2 As shown, it includes a support frame 1, a centering sleeve 2 and a clamping mechanism 3; taking the processing of a typical rotating conical thin-walled part (hereinafter referred to as part) 4 as an example, when the outer circle is processed, the centering sleeve 2 is used to achieve rapid centering. In this embodiment, the lower plane (i.e., the large end face) of the part 3 is represented by the A surface, and the upper plane (i.e., the small end face) of the part 1 is represented by the B surface, and the inner hole processing is performed on the B surface, and the outer circle processing is performed on the outer conical surface.

[0033] Specifically, the support frame 1 can be connected and fixed to the rotating table of the vertical lathe, and has a bearing surface C that matches the A surface of the part 4 to bear the part 4. The centering sleeve 2 has a centering hole 21 with at least one end open, and the centering hole 21 is configured to accommodate one end of the part 4 corresponding to the B surface, and the open end of the centering hole 21 is provided with a positioning surface 211 that contacts and positions the outer conical surface of the part 4, and the inner diameter of the positioning surface 211 is configured to be larger than the outer diameter of the B surface and smaller than the outer diameter of the A surface. When the centering sleeve 2 contacts the part 4, the positioning surface 211 is coaxial with the axis of the outer conical surface of the part 4, thereby limiting the circumference of the part 4. The clamping mechanism 3 is connected to the centering sleeve 2, and the centering sleeve 2 is linked to move the positioning surface 211 of the centering sleeve 2 to contact the outer conical surface of the part 3, thereby completing the centering and clamping of the part 4, waiting for the vertical lathe to perform external cylindrical processing.

[0034] In this embodiment, the positioning surface 211 is configured as an inner conical surface that matches the outer conical surface of the part 4, so that the positioning surface 211 and the part 4 are in close contact to improve the stability of clamping.

[0035] Compared with the prior art of spot welding four lugs on parts, in terms of rounding, firstly, it solves the problems of inconvenient clamping operation in the prior art, secondly, it reduces the time for processing the lugs, spot welding, knocking off the lugs and grinding the spot welds, and thirdly, it reduces the difficulty of clamping, thereby improving the processing efficiency.

[0036] In some embodiments, the support frame 1 is connected and fixed to the rotating worktable of the vertical lathe by a plurality of bolts.

[0037] The positioning surface 211 has three arc segments evenly distributed around the circumference, thereby reducing the influence of the large cone diameter tolerance on the positioning accuracy when stamping the part 4, and reducing the deformation of the part 4 when pressing. It can be understood that the arc segment can also be two or four segments, etc., and this embodiment is not limited to this.

[0038] In some embodiments, the clamping mechanism 3 includes a positioning shaft 31 disposed on the support frame 1 and a bolt 32 threadedly connected to the positioning shaft 31. Among them, one end of the positioning shaft 31 can pass through the B surface of the part 4 and extend to the outside of the part 4 (that is, one end of the positioning shaft 31 is higher than the B surface); the end of the centering sleeve 2 away from the positioning surface 211 is provided with a through hole 212 that cooperates with the positioning shaft 31, so that the positioning shaft 31 can pass through.

[0039] When machining the outer circle, firstly, the outer circle of the circumference-finding positioning shaft 31 is used to realize the centering correction of the support frame 1 and the rotary worktable; then, the centering sleeve 2 is mounted on the positioning shaft 31 through the through hole 212, and the bolt 32 is turned to move the centering sleeve 2 downward, so that the positioning surface 211 contacts the outer conical surface of the part 4, thus completing the centering and clamping of the part 4. The overall structure is simple and easy to operate, which is conducive to reducing costs, and has good self-locking performance and strong practicality.

[0040] In order to shorten the tightening time, an open washer 33 may be provided between the centering sleeve 2 and the bolt 32 during actual use.

[0041] In some embodiments, the centering sleeve 2 is conical; and a tapered hole with a gradually decreasing aperture is provided on its large end face in the direction toward the small end face, and the taper of the tapered hole is the same as the taper of the outer tapered surface of the part 3 to form a centering hole 21; and the through hole 212 is arranged in the central area of ​​the small end face of the centering sleeve 2.

[0042] In order to reduce the weight of the centering pressing sleeve 2 and facilitate the operation of the staff, a plurality of hollow grooves 213 are opened on the small end surface of the centering pressing sleeve 2 along the circumference of the through hole 212.

[0043] As a specific implementation of the above embodiment, the support frame 1 is provided with a plurality of assembly holes along the circumference that cooperate with the rotating worktable for installing studs, and is connected and fixed to the rotating worktable of the vertical lathe through nuts. It has a simple structure, is convenient for disassembly and installation, and is easy to manufacture.

[0044] It can be seen from the above description that the working principle and beneficial effects of the embodiment of the utility model are:

[0045] By using the large end face of part 4 as the positioning reference, the horizontal rotational freedom of part 4 is limited by the bearing surface of the support frame 1 ( , ) and the vertical displacement degrees of freedom ( ), and limits the horizontal displacement freedom of part 4 by means of a positioning surface 211 coaxial with the outer cone surface of part 4 ( , ); As for the vertical rotational freedom ( ), from the perspective of processing requirements, there is no restriction. Because when a batch of workpieces are positioned on the tooling, even if the positions of each workpiece around the vertical circumference are different, it does not affect the processing requirements; the overall structure of the tooling is simple and easy to operate, which solves the problem of difficult clamping and alignment when processing such parts, thereby providing a practical and low-cost solution for efficient and stable turning of such parts, and has strong practicality; further, the positioning surface 211 is an inner cone surface, so that the positioning surface 211 and the part 4 can be in close contact, which is conducive to improving the stability of clamping. At the same time, the positioning surface 211 has three arc segments evenly distributed on the circumference, which can reduce the influence of the large cone diameter tolerance on the positioning accuracy when stamping the part 4, and reduce the deformation of the part 4 during pressing; finally, the fastener 3 is clamped by a threaded positioning shaft 31 and a bolt 32, which has a simple structure and is easy to operate, and has good self-locking performance, which can meet the production requirements.

[0046] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A vertical lathe centering tool for tapered thin-walled parts, characterized in that: include: A support frame having a bearing surface matched with the large end surface of the tapered thin-walled part to bear the tapered thin-walled part; A centering pressing sleeve having a centering hole with one end open; The centering hole is configured to at least accommodate the end portion corresponding to the small end face of the tapered thin-walled part; the opening end of the centering hole is provided with a positioning surface for contacting and positioning with the outer conical surface of the tapered thin-walled part; The inner diameter of the positioning surface is smaller than the outer diameter of the large end surface; A clamping mechanism is connected to the centering sleeve and can move the centering sleeve in a linked manner so that the positioning surface contacts the outer conical surface of the conical thin-walled part; Wherein, the positioning surface is an inner conical surface that matches the outer conical surface of the conical thin-walled part.

2. The vertical centering tool for tapered thin-walled parts according to claim 1 is characterized in that: The inner diameter of the positioning surface is greater than the outer diameter of the small end surface.

3. The vertical centering tool for tapered thin-walled parts according to claim 1 is characterized in that: The positioning surface includes a plurality of arc segments distributed in a circumference.

4. The vertical centering tool for tapered thin-walled parts according to claim 1 is characterized in that: The centering sleeve is conical; a tapered hole with a gradually decreasing aperture is provided from the large end face of the centering sleeve toward the small end face; the taper of the tapered hole is the same as the taper of the outer tapered surface of the tapered thin-walled part to form the centering hole.

5. The vertical centering tool for tapered thin-walled parts according to claim 4 is characterized in that: The clamping mechanism comprises: A positioning shaft, arranged on the support frame; The bolt is threadedly connected to the positioning shaft.

6. The vertical centering tool for tapered thin-walled parts according to claim 5 is characterized in that: A through hole matching with the positioning shaft is arranged at the center of the small end surface of the centering pressing sleeve.

7. The vertical centering tool for tapered thin-walled parts according to claim 6 is characterized in that: One end of the positioning shaft connected to the bolt can extend through the through hole to the outside of the small end surface of the centering sleeve.

8. The vertical centering tool for tapered thin-walled parts according to claim 6 is characterized in that: An open washer is provided between the bolt and the centering sleeve.

9. The vertical centering tool for tapered thin-walled parts according to claim 6, characterized in that: A plurality of hollow grooves are arranged on the small end surface of the centering sleeve along the circumference of the through hole.

10. A vertical lathe, characterized in that: A centering tool for vertical lathe for tapered thin-walled parts according to any one of claims 1 to 9; wherein the support frame is connected to the rotating worktable of the vertical lathe.

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