Wedge pushing rapid pressing plate mechanism tool for turning inner diameter of comb tooth piston ring

Abstract

The utility model relates to a wedge pushing and ejecting rapid plate pressing mechanism tool for turning the inner diameter of a comb tooth piston ring, the wedge pushing and ejecting rapid plate pressing mechanism tool is designed for solving the problem of the part wall thickness of the piston ring, the precision requirement and the machining process continuity are guaranteed, the wedge pushing and ejecting rapid plate pressing mechanism tool comprises a base, and a positioning seat is arranged at one end of the base; after the base and the positioning seat are assembled, a hollow inner cavity is formed in a circular ring structure, the inner cavity structure and the end face of the hollow inner cavity are provided with a wedge pushing and jacking rapid pressing plate mechanism, and the wedge pushing and jacking rapid pressing plate mechanism comprises a wedge-shaped seat jacking rod, a connecting rod, a pressing plate and a supporting nail. One end of the connecting rod is hinged to a threaded through hole formed in the middle of the pressing plate through a screw nut, and the other end of the connecting rod is hinged to a threaded through hole in the head of a supporting nail arranged on the positioning seat through a screw nut; wherein the wedge-shaped seat ejector rod, the connecting rod, the pressing plate and the supporting nail form a slider-crank mechanism. According to the novel tool, the clamping process is faster, and the auxiliary working time is greatly shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing frock technical field especially is a kind of inclined wedge push top quick pressing plate mechanism frock for turning comb tooth piston ring inner diameter. BACKGROUND

[0002] In existing production stage, for the piston ring part wall thickness is relatively thin, and there is a part for intermittent turning in machining process, wherein the machining process difficulty lies in, if using jaw positioning clamping, it will inevitably cause the deformation of part, cannot guarantee the precision requirement of part.

[0003] Therefore, a new frock is needed, which completely solves the positioning and clamping problem of such piston ring parts, avoids the problem of part deformation, and is fast and convenient to clamp. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model discloses a kind of inclined wedge push top quick pressing plate mechanism frock for turning comb tooth piston ring inner diameter, the inclined wedge push top quick pressing plate mechanism frock is designed for the part wall thickness problem of piston ring, guaranteeing precision requirement and machining process continuity, including base, the base one end is equipped with locating seat, and both are fixedly connected by thread pair, while a plurality of threaded holes are opened on the base, and the end face of the plane one end of the locating seat is also equipped with corresponding threaded hole;

[0005] Meanwhile, after the assembly of base and locating seat is completed, the hollow inner cavity is provided in the circular ring structure formed by the two, i.e. the end face of the base is provided with a plurality of axial counterbores in the circumferential direction, and the axial counterbores are distributed in axial symmetry, and corresponding radial holes are provided on the outer cylindrical surface in the direction perpendicular to the axis of the axial counterbores;And the locating seat is provided with a stepped hole in the end face in contact with the base during assembly, the stepped hole is in position correspondence with the axial counterbores, and the axis is coaxial with the straight line, to form a vertical structure of the inner cavity structure between the axial counterbores, radial holes and stepped holes;

[0006] The inner cavity structure is provided with inclined wedge push top quick pressing plate mechanism, including wedge seat top rod, connecting rod, pressing plate, support nail, one end of the pressing plate is provided with protruding friction area for pressing contact with the piston ring to be machined, one end of the connecting rod is hinged with the threaded hole provided in the middle of the pressing plate through screw nut, and the other end is hinged with the threaded hole of the support nail head provided on the locating seat through screw nut;And the outer side of the support nail is provided with an axial through stepped hole, and the neck of the wedge seat top rod is sleeved with a cylindrical compression spring and then assembled into the stepped hole of the locating seat, one end of the neck of the wedge seat top rod is hinged with the threaded hole of the tail end of the pressing plate through screw nut, and the other end of the wedge seat top rod is a wedge-shaped feature structure, which is entirely arranged in the stepped hole, and has the freedom degree of reciprocating motion along the axis direction of the stepped hole, i.e. the wedge seat top rod, connecting rod, pressing plate and support nail constitute a crank slider mechanism.

[0007] In an embodiment of the utility model, base, positioning seat are hollow ring parts, convenient for guaranteeing reliable assembly premise, reducing weight for overall tooling.

[0008] In an embodiment of the utility model, three M12 threaded through holes are arranged on the positioning seat, and the line between the threaded through hole and the tooling center is at an acute angle with the adjacent middle axis of the inclined wedge push top quick pressing plate mechanism, and three threaded through holes are arranged on the base corresponding to the threaded through hole. After the M12 screw is connected with the positioning seat through the threaded pair, it passes through the through hole on the base, and is screwed into the T-shaped nut in the T-shaped slot of the lathe chuck base jaw, so that the tooling and the lathe chuck are fixedly connected.

[0009] In an embodiment of the utility model, the knurled screw is arranged in the axial counterbore of the base, the threaded area of the knurled screw is provided with a driving cone, and the conical surface working area of the driving cone is in sliding friction with the inclined surface of the inclined wedge-shaped feature structure.

[0010] In an embodiment of the utility model, six M6 threaded through holes are arranged on the end face of the base along the circumference, and six M6 threaded holes are arranged on the end face of the φ23 stepped hole of the positioning seat along the circumference.

[0011] In an embodiment of the utility model, the screw part of the knurled screw is divided into three sections, the section close to the head is an M10 threaded surface, the middle part is a φ8 smooth rod, and the tail part is an M8 threaded surface.

[0012] In an embodiment of the utility model, six M8 threaded holes are arranged on the end face of the positioning hole of the positioning seat along the circumference, and the threaded end of the supporting nail is screwed into the threaded hole of the positioning seat and is fixedly connected with the threaded hole.

[0013] Compared with the prior art, the above technical scheme of the utility model has the following advantages: the wedge pushing and top pressing quick pressing plate mechanism tool of the utility model completely solves the positioning and clamping problem of the part, avoids the problem of part deformation, the pressing mechanism of the tool can also realize quick pressing and loosening of the pressing plate, the clamping process is more rapid, the auxiliary working hours are greatly shortened, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to make the content of the utility model more easily and clearly understood, the utility model will be further described in detail below according to the specific embodiments of the utility model and in combination with the drawings.

[0015] Figure 1 is a top view structural schematic diagram of the wedge pushing and top pressing quick pressing plate mechanism tool for turning the inner diameter of the comb-shaped tooth piston ring of the utility model;

[0016] Figure 2 is a sectional view of the wedge pushing and top pressing quick pressing plate mechanism tool of the utility model;

[0017] Figure 3 is a local enlarged schematic diagram of the wedge pushing and top pressing quick pressing plate mechanism of the utility model;

[0018] Figure 4 is a B-B sectional view of the screw rod connecting part of the utility model.

[0019] As shown in the figure, 1, base, 11, axial counterbore, 12, radial hole, 13, knurled screw, 14, forcing taper block, 2, positioning seat, 21, stepped hole, 22, support nail, 3, wedge-shaped seat top rod, 4, connecting rod, 5, pressing plate, 6, piston ring, 7, compression spring. DETAILED DESCRIPTION

[0020] As Figure 1 and Figure 2As shown, the embodiment provides a quick pressing plate mechanism tool for turning the inner diameter of the comb-shaped piston ring, which is designed for the part wall thickness problem of the piston ring, ensures the precision requirement and the continuity of the processing technology, and adopts external compression, and has six groups of wedge pushing and pressing plate mechanisms. One connecting rod is arranged on each side of the pressing plate, M4 threaded holes at two ends of the connecting rod are coaxially arranged with M4 threaded holes in the middle of the pressing plate and M4 threaded holes at the head of the supporting nail, and the three are hingedly connected through M4 screws and nuts. Six M8 threaded holes are circumferentially and uniformly arranged on the end face of the positioning hole of the positioning seat, the threaded end of the supporting nail is screwed into the threaded hole on the positioning seat and is tightly connected with the threaded hole. In each M8 threaded hole axis of the positioning seat, an axial through step hole is arranged in the radial section, and the axes of the six step holes belong to the same cylindrical surface generatrix. After the neck of the wedge-shaped seat top rod is sleeved with a cylindrical compression spring, it is installed in the step hole of the positioning seat and is matched with the larger gap of the φ11.3 through hole on the positioning seat, the outer cylindrical surface of the wedge-shaped base structure is matched with the small gap of the φ23 step hole, and the wedge-shaped seat can freely slide along the axis direction of the step hole. The M6 threaded hole at the tail of the pressing plate is coaxially arranged with the M6 threaded hole on the head of the wedge-shaped seat top rod extending out of the positioning seat, and the two are hingedly connected through M6 screws and nuts. The pressing plate, the wedge-shaped seat top rod, the connecting rod and the supporting nail constitute a crank slider mechanism.

[0021] As shown in the figure, Figure 3 As shown, six axial counterbores are circumferentially and uniformly arranged on the end face of one end of the base, six radial holes are circumferentially and uniformly arranged on the outer cylindrical surface in the radial section of the axial counterbores, the outer side of the hole is an M10 threaded hole, the inner side is a φ8 light hole, and the light hole is in communication with the corresponding axial counterbore at one end. The screw part of the knurled screw is divided into three parts, the part close to the head is an M10 threaded surface, the middle part is a φ8 light rod, and the tail is an M8 threaded surface. The tail of the knurled screw is inserted through the radial hole on the cylindrical surface of the base, the φ8 light rod part is matched with the φ8 light hole on the inner side in a clearance fit, the M10 threaded surface is screwed into the external M10 threaded hole, and then the M8 threaded tail is screwed into the M8 threaded hole of the urging wedge block flat end. After confirming that the tail of the knurled screw is tightly connected with the urging wedge block, the two are welded into one by welding to prevent the urging wedge block from loosening during use.

[0022] Six M6 threaded holes are circumferentially and uniformly arranged on the end face of the other end of the base. Six M6 threaded holes are circumferentially and uniformly arranged on the end face of one end of the φ23 step hole of the positioning seat. The M6 threaded holes and the threaded holes are one-to-one corresponding to the same radial section of the axis of the wedge-shaped seat top rod and the knurled screw mounting hole. The M6 screw is inserted through the M6 threaded hole on the base, screwed into the corresponding M6 threaded hole on the positioning seat, and the positioning seat and the base are tightly connected to complete the assembly of the tool.

[0023] like Figure 1 , Figure 4 As shown, three M12 threaded through holes are evenly distributed around the circumference of the positioning seat at an acute angle to the quick-pressing plate mechanism, and three corresponding holes are provided on the base. Through hole. After the M12 screw is connected to the positioning seat through a threaded pair, it passes through the through hole on the base and is screwed into the T-nut in the T-slot of the lathe chuck base jaw, thus realizing the fixed connection between the tooling and the lathe chuck.

[0024] For ease of explanation, the directional terms such as up, down, left, and right mentioned in this text only represent the positions shown in the illustrations and do not represent the actual positions of the tooling and the piston ring to be processed during the machining process. During positioning and clamping, when the M10 threaded portion of the knurled screw is not screwed into the threaded hole on the outer cylindrical surface of the base, the φ8 smooth rod and φ8 smooth hole have a clearance fit, allowing the knurled screw to slide freely along the axial direction. Under the elastic force of the spring, the wedge-shaped seat push rod pulls the tail of the pressure plate downwards, causing the front end of the pressure plate to tilt upwards. The piston ring is then inserted into the positioning hole of the positioning seat, ensuring that the end face of the piston ring is in contact with the bottom surface of the positioning hole, and the outer cylindrical surface is in contact with the inner cylindrical surface of the positioning hole, thus completing the positioning of the piston ring in the tooling. Push the knurled screw inward along the axis. Under the pushing action of the conical surface of the commutating cone, the wedge-shaped seat push rod moves rapidly upward along the axis, compressing the spring. The pressure plate swings around the M4 screw on the head of the support pin, and its front end quickly approaches the piston ring clamping end face downward. Then, the M10 threaded surface is screwed into the threaded hole on the outer cylindrical surface of the base. At this time, the wedge-shaped seat push rod begins to move slowly upward, and the front end of the pressure plate slowly presses down accordingly until the front end of the pressure plate clamps the piston ring. Complete the clamping operation of the six pressure plates in sequence, and start the lathe to turn the inner hole of the piston ring. After the turning is completed, loosen the knurled screw outward, and the front end of the pressure plate slowly lifts up. When the M10 threaded surface disengages from the M10 threaded hole of the base, the wedge-shaped seat push rod quickly descends under the action of the spring force, and the front end of the pressure plate quickly lifts up. Complete the loosening operation of the six pressure plates in sequence, and then remove the piston ring from the tooling.

[0025] In this embodiment, after the piston ring to be processed is positioned on the fixture, six knurled screws circumferentially distributed on the cylindrical surface of the base are rotated sequentially to clamp and release the piston ring on the pressure plate. The knurled screws and the base utilize a short thread engagement length combined with a clearance fit between the guide rod and the guide hole. This clearance fit allows for rapid advance and retraction of the pressure plate. The threaded connection locks the pressure plate, ensuring clamping stability. This utility model fixture enables rapid external clamping of thin-walled ring-shaped parts, significantly reducing auxiliary time, improving production efficiency, and ensuring processing stability and product quality.

[0026] Obviously, the above embodiments are only examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A turning inclined wedge push-up quick pressing plate mechanism tool for turning the inner diameter of a comb-shaped piston ring, the turning inclined wedge push-up quick pressing plate mechanism tool is designed for the part wall thickness problem of the piston ring (6), ensures the accuracy requirement and the continuity of the processing technology, characterized in that, The base (1) is provided with a positioning seat (2) at one end, and the two are fixedly connected through a threaded pair, and a plurality of threaded through holes are formed on the base (1) and are uniformly distributed along the circumference, and the end face of the planar end of the positioning seat (2) is also provided with corresponding threaded holes; Meanwhile, the base (1) and the positioning seat (2) are provided with a hollow inner cavity after assembly, that is, the outer periphery of the end face of the base (1) is provided with a plurality of axial counterbores (11) in the circumferential direction, and the axial counterbores (11) are symmetrically distributed, and corresponding radial holes (12) are provided on the outer cylindrical surface in the direction perpendicular to the axis of the axial counterbores (11); and the positioning seat (2) is provided with a stepped hole (21) in the end face in contact with the base (1) after assembly, the stepped hole (21) is positionally corresponding between the axial counterbores (11), and the axis is coaxial, and the axial counterbores (11), the radial holes (12) and the stepped hole (21) form a vertical inner cavity structure; The inner cavity structure is provided with a wedge pushing top quick pressing plate mechanism, which comprises a wedge-shaped seat top rod (3), a connecting rod (4), a pressing plate (5), a supporting pin (22), one end of the pressing plate (5) is provided with a protruding friction area for pressing and contacting a piston ring (6) to be processed, one end of the connecting rod (4) is hinged to the threaded through hole provided in the middle of the pressing plate (5) through a screw nut, the other end is hinged to the threaded through hole of the head of the supporting pin (22) provided on the positioning seat (2) through a screw nut, and the outer side of the supporting pin (22) is provided with an axial through stepped hole (21), and the neck of the wedge-shaped seat top rod (3) is sleeved with a cylindrical compression spring (7), and then is assembled into the stepped hole (21) on the positioning seat (2), one end of the neck of the wedge-shaped seat top rod (3) is hinged between the threaded through hole of the tail end of the pressing plate (5) through a screw nut, and the other end of the wedge-shaped seat top rod (3) is a wedge-shaped feature structure, which is entirely arranged in the stepped hole (21) and has a degree of freedom of reciprocating motion along the axis of the stepped hole (21), that is, the wedge-shaped seat top rod (3), the connecting rod (4), the pressing plate (5) and the supporting pin (22) form a crank slider mechanism.

2. The wedge-eject quick press platen tooling of claim 1, wherein: The base (1) and the positioning seat (2) are hollow annular parts.

3. The wedge-eject quick press platen tooling of claim 2, wherein: Three threaded through holes are uniformly distributed on the positioning seat (2), and three through holes are also provided on the base (1) corresponding to the threaded through holes, and then the threaded through holes are connected to the positioning seat (2) through a threaded pair, and then the through holes on the base (1) are passed through.

4. The wedge-eject quick press platen tooling of claim 2, wherein: The axial counterbores (11) of the base (1) are provided with knurled screws (13), and the threaded area of the knurled screws (13) is provided with a forcing cone block (14), and the taper surface working area of the forcing cone block (14) and the inclined surface of the wedge-shaped feature structure are in sliding friction relationship.

5. The wedge-eject quick-press clamp mechanism tooling of claim 1, wherein: Six threaded through holes are uniformly distributed on the end face of the base (1), and six threaded holes are uniformly distributed on the end face of the stepped hole (21) in the positioning seat (2), the threaded through holes on the base (1) are screwed into the corresponding threaded holes in the positioning seat (2), the positioning seat (2) and the base (1) are tightly connected, and the assembly work of the tooling is completed.

6. The wedge-eject quick press platen tooling of claim 4, wherein: The screw part of the knurled screw (13) is divided into three sections, the section near the head is a threaded surface, the middle section is a smooth rod, and the tail section is a threaded surface; the tail section of the knurled screw (13) is passed through the radial hole (12) on the cylindrical surface of the base (1), the smooth rod section is matched with the inner smooth hole gap, the fast forward and fast backward of the knurled screw (13) are realized, the threaded surface is screwed into the external threaded hole, and then the threaded tail is screwed into the threaded hole in the flat end of the forcing cone block (14).

7. The wedge-eject quick-press clamp mechanism tooling of claim 1, wherein: The end face of one end of the positioning hole in the positioning seat (2) is uniformly provided with six threaded holes in the circumferential direction, wherein the threaded end of the support nail (22) is screwed into the threaded hole in the positioning seat (2) and is tightly connected.

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