Protective tool for lathe machining of long-shaft-shaped part

Abstract

A protective tool for lathe machining of long-shaft-shaped parts comprises a mounting base, a fixed lower semicircular seat and a movable upper semicircular seat, the fixed lower semicircular seat is fixedly arranged on the mounting base, and a rotating shaft structure is arranged at one end of the fixed lower semicircular seat. One end part of the movable upper semicircular seat is rotationally mounted on the fixed lower semicircular seat through the rotating shaft structure, a locking mechanism is arranged at the other end part of the fixed lower semicircular seat, and the fixed lower semicircular seat locks the other end part of the movable upper semicircular seat through the locking mechanism; the fixed lower semicircular seat and the movable upper semicircular seat are matched and locked to form a circular frame, at least three soft supporting structures are evenly arranged on the inner ring portion of the circular frame, and a clamping and fixing mechanism is installed at the bottom of the installation base. The tool is simple in structure, convenient and fast to use, capable of solving the shaking problem of long-shaft-shaped parts in the lathe machining process and low in manufacturing and using cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of lathe processing auxiliary tools, and in particular relates to a protective device for lathe processing of long-axis parts. Background Art

[0002] Long-axis parts are very prone to shaking during lathe processing, especially when turning at the far end of the long-axis parts. The shaking is more serious, resulting in large errors in processing or low processing accuracy, and it is difficult to meet the qualified requirements. If a special lathe for processing long-axis parts is customized, not only the manufacturing cost is high, but the use cost is also high.

[0003] In the prior art, the patent document with the announcement number CN 208879732 U discloses a lathe anti-shake clamping device, including a chuck, at least two movable jaws and a position adjustment mechanism corresponding to the movable jaws one by one for driving the movable jaws to move radially along the chuck, wherein at least one set of support structures is provided between adjacent position adjustment mechanisms, and the position adjustment mechanism and the support structure are both provided on the chuck. Since the chuck is provided with a support structure for preventing the workpiece from shaking along the axial direction of the chuck, when the movable jaws clamp the workpiece on the chuck, the end face of the workpiece located between the movable jaws and facing the chuck abuts against the support structure, which limits the axial movement of the workpiece along the chuck, prevents the workpiece from shaking in the axial direction during the processing, and ensures the turning accuracy of the lathe. The above scheme prevents the workpiece from shaking during the processing by redesigning and reinforcing the clamping device, but the shaking of the distal end of the long-axis part during the processing is not caused by insufficient clamping stability, but by the nature of the long-axis part itself, so it cannot solve the shaking problem of the long-axis part during the lathe processing. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] In view of the deficiencies in the prior art, the utility model proposes a protective gear for lathe processing of long-axis parts, which has a simple structure, is easy to use, can solve the shaking problem of long-axis parts during lathe processing, and has low manufacturing and use costs.

[0006] 2. Specific technical solutions

[0007] A protective device for lathe processing of long-axis parts, comprising a mounting base, a fixed lower semicircular seat and a movable upper semicircular seat, the fixed lower semicircular seat being fixedly arranged on the mounting base, a rotating shaft structure being arranged at one end of the fixed lower semicircular seat, one end of the movable upper semicircular seat being rotatably mounted on the fixed lower semicircular seat through the rotating shaft structure, a locking mechanism being arranged at the other end of the fixed lower semicircular seat, the fixed lower semicircular seat locks the other end of the movable upper semicircular seat through the locking mechanism, the fixed lower semicircular seat and the movable upper semicircular seat are locked together to form a circular frame, at least three soft supporting structures are evenly arranged on the inner ring part of the circular frame, all the soft supporting structures are used to closely contact and support the outer surface of the middle part of the long-axis part, and a clamping and fixing mechanism is installed at the bottom of the mounting base for clamping and fixing on the lathe.

[0008] Preferably, two soft supporting structures are symmetrically arranged on both sides of the fixed lower semicircular seat, and a soft supporting structure is arranged at the top center of the movable upper semicircular seat.

[0009] Preferably: the soft supporting structure includes a supporting sleeve and an ejector screw structure, a friction rubber stick is installed in the supporting sleeve, threaded holes are provided in the fixed lower semicircular seat and the movable upper semicircular seat, the ejector screw structure is installed in the threaded holes, and the ejector screw structure is aligned with the rear end of the friction rubber stick, and the friction rubber stick is made of a plastic stick or a rubber stick.

[0010] Preferably, a sleeve mounting hole is provided in the fixed lower semicircular seat and the movable upper semicircular seat, the sleeve mounting hole is linearly connected with the threaded hole, the supporting sleeve is detachably mounted in the sleeve mounting hole, and a clamping positioning structure is also provided on the side of the sleeve mounting hole.

[0011] As a preference, the clamping and positioning structure is a screw structure or a spring positioning pin, and a pushing disc is rotatably mounted at the end of the ejection screw structure, and the pushing disc is in close contact with the rear end of the friction rubber stick.

[0012] Preferably, the locking mechanism includes a screw structure and a locking nut, the locking nut is sleeved on the screw structure, and U-shaped bayonet structures are provided at the ends of the fixed lower semicircular seat and the movable upper semicircular seat, one of the U-shaped bayonet structures is provided with a rotating shaft, one end of the screw structure is installed on the rotating shaft, and the other end of the screw structure is inserted into another U-shaped bayonet structure, and the locking nut cooperates with the other U-shaped bayonet structure.

[0013] Preferably: the clamping and fixing mechanism includes a clamping plate structure and a tightening bolt, a threaded hole structure is provided in the middle of the mounting base, the tightening bolt cooperates with the threaded hole structure, and passes through the threaded hole structure to be rotatably connected to the middle of the clamping plate structure, and bayonet structures are respectively provided on the upper side of both ends of the clamping plate structure and the lower side of both ends of the mounting base for clamping on the lathe rail.

[0014] The beneficial effects of the utility model are as follows: the mounting base is fixed to the middle position of the long-axis part by a clamping and fixing mechanism; after the long-axis part is loaded into the lathe, the movable upper semicircular seat 3 is rotated to buckle on the fixed lower semicircular seat and locked by the locking mechanism, so that the soft support structure surrounds the middle of the long-axis part, and stable point contact support is provided during the processing, thereby avoiding the shaking of the long-axis part during the lathe processing; the wear caused by the friction rubber rod support will not damage the workpiece, and the friction rubber rod can be continuously ejected by the ejection screw structure to ensure that the friction rubber rod is in close contact with the long-axis part; the support sleeve and the friction rubber rod can be replaced and adjusted to adapt to long-axis parts of different thicknesses; the action position of the clamping and fixing mechanism can be adjusted to adapt to long-axis parts of different lengths; therefore, the manufacturing and use costs are low, and the adaptability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model as a whole.

[0017] In the figure: mounting base 1; fixed lower semicircular seat 2; movable upper semicircular seat 3; rotating shaft structure 4; locking mechanism 5; soft supporting structure 6; clamping and fixing mechanism 7;

[0018] Support casing 61; ejector screw structure 62; friction rubber rod 63; clamping and positioning structure 64; push disc 65;

[0019] Screw structure 51; locking nut 52; U-shaped bayonet structure 53; clamping plate structure 71; tension bolt 72. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] 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" 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.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" 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 direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example:

[0024] like Figure 1 and Figure 2 As shown: a protective device for lathe processing of long-axis parts, provided with a mounting base 1, a fixed lower semicircular seat 2 and a movable upper semicircular seat 3, the fixed lower semicircular seat 2 is fixedly arranged on the mounting base 1, a rotating shaft structure 4 is arranged at one end of the fixed lower semicircular seat 2, and one end of the movable upper semicircular seat 3 is rotatably mounted on the fixed lower semicircular seat 2 through the rotating shaft structure 4, a locking mechanism 5 is arranged at the other end of the fixed lower semicircular seat 2, and the fixed lower semicircular seat 2 locks the other end of the movable upper semicircular seat 3 through the locking mechanism 5, and the fixed lower semicircular seat 2 and the movable upper semicircular seat 3 are locked together to form a circular frame, and three soft support structures 6 are evenly arranged on the inner ring of the circular frame, and more soft support structures 6 can also be arranged, but three soft support structures 6 are sufficient for stable support and will not generate excessive resistance. Specifically: two soft support structures 6 are symmetrically arranged on both sides of the fixed lower semicircular seat 2, and a soft support structure 6 is arranged at the top of the movable upper semicircular seat 3, and the structure is more uniform and stable.

[0025] All the soft supporting structures 6 are used to closely contact and support the outer surface of the middle part of the long shaft-shaped part. A clamping and fixing mechanism 7 is installed at the bottom of the mounting base 1 for clamping and fixing on the lathe.

[0026] Specifically: the above-mentioned clamping and fixing mechanism 7 includes a clamping plate structure 71 and a tightening bolt 72. A threaded hole structure is arranged in the middle of the mounting base 1. The tightening bolt 72 cooperates with the threaded hole structure and passes through the threaded hole structure to be rotatably connected with the middle of the clamping plate structure 71. A bayonet structure is respectively arranged on the upper side of both ends of the clamping plate structure 71 and the lower side of both ends of the mounting base 1 for clamping on the lathe rail. If it is fixed to other parts of the lathe, other suitable fixing methods or structures may be adopted.

[0027] The above-mentioned soft support structure 6 includes a support sleeve 61 and an ejector screw structure 62. A friction rubber rod 63 is installed in the support sleeve 61. Threaded holes are provided in the fixed lower semicircular seat 2 and the movable upper semicircular seat 3. The ejector screw structure 62 is installed in the threaded holes, and the ejector screw structure 62 is aligned with the rear end of the friction rubber rod 63. The friction rubber rod 63 is made of a plastic rod or a rubber rod, and is composed of a fused gel, a solvent and a lubricating moisturizer.

[0028] A sleeve mounting hole is provided in the fixed lower semicircular seat 2 and the movable upper semicircular seat 3. The sleeve mounting hole is linearly connected with the threaded hole. The supporting sleeve 61 is detachably mounted in the sleeve mounting hole. A clamping positioning structure 64 is also provided on the side of the sleeve mounting hole.

[0029] The clamping and positioning structure 64 is a screw structure or a spring positioning pin. A pushing disc 65 is rotatably mounted at the end of the ejecting screw structure 62 . The pushing disc 65 is in close contact with the rear end of the friction rubber stick 63 .

[0030] The locking mechanism 5 comprises a screw structure 51 and a locking nut 52, the locking nut 52 is sleeved on the screw structure 51, and U-shaped bayonet structures 53 are provided at the ends of the fixed lower semicircular seat 2 and the movable upper semicircular seat 3, wherein one of the U-shaped bayonet structures 53 is provided with a rotating shaft, one end of the screw structure 51 is mounted on the rotating shaft, and the other end of the screw structure 51 is inserted into another U-shaped bayonet structure 53, and the locking nut 52 cooperates with the other U-shaped bayonet structure 53.

[0031] The implementation principle is as follows: the mounting base 1 is fixed to the middle position of the long-axis part by the clamping and fixing mechanism 7. After the long-axis part is loaded into the lathe, the movable upper semicircular seat 3 is rotated to buckle on the fixed lower semicircular seat 2, and locked by the locking mechanism 5, so that the soft support structure 6 surrounds the middle of the long-axis part and provides stable point contact support during the processing, thereby avoiding the shaking of the long-axis part during the lathe processing. The wear caused by the support of the friction rubber rod 63 will not damage the workpiece, and the friction rubber rod 63 can continuously eject the friction rubber rod 63 through the ejection screw structure 62 to ensure that the friction rubber rod 63 is in close contact with the long-axis part. The support shell 61 and the friction rubber rod 63 can be replaced and adjusted to adapt to long-axis parts of different thicknesses. The action position of the clamping and fixing mechanism 7 can be adjusted to adapt to long-axis parts of different lengths, so the manufacturing and use costs are low and the adaptability is high.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention shall be defined by the appended claims.

Claims

1. A protective gear for lathe processing of long shaft parts, characterized in that: The invention comprises a mounting base (1), a fixed lower semicircular seat (2) and a movable upper semicircular seat (3), wherein the fixed lower semicircular seat (2) is fixedly mounted on the mounting base (1), a rotating shaft structure (4) is arranged at one end of the fixed lower semicircular seat (2), and one end of the movable upper semicircular seat (3) is rotatably mounted on the fixed lower semicircular seat (2) through the rotating shaft structure (4), a locking mechanism (5) is arranged at the other end of the fixed lower semicircular seat (2), and the fixed lower semicircular seat (2) locks the other end of the movable upper semicircular seat (3) through the locking mechanism (5), the fixed lower semicircular seat (2) and the movable upper semicircular seat (3) cooperate and lock to form a circular frame, at least three soft support structures (6) are evenly arranged on the inner ring of the circular frame, and all the soft support structures (6) are used to closely contact and support the outer surface of the middle part of the long shaft-shaped part, and a clamping and fixing mechanism (7) is installed at the bottom of the mounting base (1) for clamping and fixing on a lathe.

2. The protective tool for lathe processing of long-axis parts according to claim 1, characterized in that: Two soft support structures (6) are symmetrically arranged on both sides of the fixed lower semicircular seat (2), and a soft support structure (6) is arranged at the top center of the movable upper semicircular seat (3).

3. The protective tool for lathe processing of long-axis parts according to claim 1 or 2, characterized in that: The soft support structure (6) comprises a support sleeve (61) and an ejector screw structure (62), a friction rubber stick (63) being installed in the support sleeve (61), threaded holes being provided in the fixed lower semicircular seat (2) and the movable upper semicircular seat (3), the ejector screw structure (62) being installed in the threaded holes, and the ejector screw structure (62) being arranged to align with the rear end of the friction rubber stick (63).

4. The protective tool for lathe processing of long-axis parts according to claim 3, characterized in that: A sleeve mounting hole is provided in the fixed lower semicircular seat (2) and the movable upper semicircular seat (3), the sleeve mounting hole being in linear communication with the threaded hole, the supporting sleeve (61) being detachably mounted in the sleeve mounting hole, and a clamping positioning structure (64) is also provided on the side of the sleeve mounting hole.

5. The protective tool for lathe processing of long-axis parts according to claim 4, characterized in that: The clamping positioning structure (64) is a screw structure or a spring positioning pin. A pushing disc (65) is also rotatably mounted at the end of the ejection screw structure (62). The pushing disc (65) is in close contact with the rear end of the friction rubber stick (63).

6. The protective tool for lathe processing of long shaft-shaped parts according to any one of claims 1-2 or 4-5, characterized in that: The locking mechanism (5) comprises a screw structure (51) and a locking nut (52), wherein the locking nut (52) is sleeved on the screw structure (51), and U-shaped bayonet structures (53) are provided at the ends of the fixed lower semicircular seat (2) and the movable upper semicircular seat (3), wherein one of the U-shaped bayonet structures (53) is provided with a rotating shaft, one end of the screw structure (51) is mounted on the rotating shaft, and the other end of the screw structure (51) is clamped into another U-shaped bayonet structure (53), and the locking nut (52) cooperates with the other U-shaped bayonet structure (53).

7. The protective tool for lathe processing of long-axis parts according to any one of claims 1-2 or 4-5, characterized in that: The clamping and fixing mechanism (7) comprises a clamping plate structure (71) and a tensioning bolt (72); a threaded hole structure is provided in the middle of the mounting base (1); the tensioning bolt (72) cooperates with the threaded hole structure and passes through the threaded hole structure to be rotatably connected to the middle of the clamping plate structure (71); and bayonet structures are provided on the upper sides of both ends of the clamping plate structure (71) and on the lower sides of both ends of the mounting base (1) for clamping on a lathe rail.

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