Chain shoe ring flattening and trimming device

Abstract

The utility model belongs to the technical field of machining, and relates to a chain shoe ring flattening and trimming device which can complete profiling and trimming operation of a plurality of products through one-time pressing. According to the technical scheme, the die comprises an upper forging die, a trimming punch and a lower forging die. The lower end face of the upper forging die is horizontal, an upper flattening groove is formed in the lower end face of the upper forging die, and the shape of the upper flattening groove is matched with that of the middle rod piece. And a trimming punch is also fixed on the upper forging die. The whole lower forging die is of a metal block structure, the lower forging die is fixed under the upper forging die, the upper end face of the lower forging die is horizontal, a lower flattening groove is formed in the upper end face of the lower forging die, the lower flattening groove is located under the upper flattening groove, and the shape of the lower flattening groove is matched with the shape of the middle rod piece. The lower flattening groove and the upper flattening groove are matched to downwards press the upset ball into a disc structure, an edge cutting through groove is further formed in the lower forging die and located under the edge cutting punch, and the edge of the flattened middle rod piece is cut off through the edge cutting through groove and the edge cutting punch.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology and relates to a chain hoof ring flattening and trimming device. Background Technology

[0002] In the production of freight car parts, chain hoop is a type of forging that is extremely commonly used in the current railway freight car braking device. The chain hoop is a hot-bent forging with a U-shaped opening. The end of the opening is symmetrically provided with two fixing holes, through which a shaft pin passes and is hinged to freight car parts such as handbrake lever, brake cylinder, brake adjuster, upper pull bar and front brake lever.

[0003] In traditional manufacturing processes, chain hoof rings are processed by heating balls at both ends with a straight rod, followed by pressing, trimming, bending, shaping, and drilling. Currently, pressing and trimming are two separate processes that require workers to complete on different equipment, resulting in low efficiency. Utility Model Content

[0004] To overcome the deficiencies in the aforementioned related technologies, this utility model proposes a chain hoof ring flattening and trimming device, which can complete the pressing and trimming operations of multiple products in one pressing operation.

[0005] This utility model provides a chain hoof ring flattening and trimming device. The chain hoof ring flattening and trimming device is applied to chain hoof ring processing. The initial material for chain hoof ring processing includes an intermediate rod, which comprises a straight rod and upsetting balls, with an upsetting ball fixed at each end of the straight rod.

[0006] The chain hoof ring flattening and trimming device includes: an upper forging die, a trimming punch, and a lower forging die. The upper forging die is an integral metal block structure, with its lower end face horizontal. The lower end face of the upper forging die is provided with an upper flattening groove, the shape of which is adapted to the shape of the intermediate rod.

[0007] A trimming punch is also fixed to the upper forging die, protruding from the lower end face of the upper forging die. The lower forging die is a metal block structure, fixed directly below the upper forging die. The upper end face of the lower forging die is horizontal, and a downward pressing groove is provided on the upper end face of the lower forging die. The downward pressing groove is located directly below the upward pressing groove, and its shape is adapted to the shape of the intermediate rod. The downward pressing groove and the upward pressing groove cooperate to press the upsetting ball into a disc structure. A trimming through groove is also provided on the upper part of the lower forging die, located directly below the trimming punch. The trimming through groove and the trimming punch cut off the edge of the flattened intermediate rod.

[0008] Preferably, the chain hoof ring flattening and trimming device further includes: a frame, a hydraulic mechanism, an upper template, and a lower template. The frame is fixed relative to the ground. The hydraulic mechanism is fixed on the frame, and the hydraulic mechanism includes a piston that reciprocates in the vertical direction.

[0009] The lower end face of the upper template is horizontal, and the upper template is positioned directly above the upper forging die. The orthographic projection of the upper template on the horizontal plane completely covers the orthographic projection of the upper forging die on the horizontal plane. The upper template is fixedly connected to the piston. The lower template is positioned below the lower forging die and is fixedly connected to the frame. The upper end face of the lower template is horizontal, and an installation groove is provided on the upper end face of the lower template. The lower forging die is positioned within the installation groove.

[0010] Preferably, the upper forging die has at least two upper pin holes, which are vertically arranged through holes. The lower forging die has at least two lower pin holes, which are aligned with the corresponding upper pin holes along the same center line, and are vertically arranged through holes.

[0011] The chain hoof ring flattening and trimming device further includes: a pin, with one pin inserted into each of the upper pin holes, and the pin also passing through the lower pin hole.

[0012] Preferably, the downward pressing groove includes: a first downward pressing groove and a second downward pressing groove. The first downward pressing groove is disposed on the lower forging die, and includes an elongated groove and a circular groove. A circular groove is provided at each end of the elongated groove, and the elongated groove and the circular groove are connected. The sidewalls of the elongated groove and the circular groove are smoothly connected. The second downward pressing groove is located above the first downward pressing groove, and the sidewall of the second downward pressing groove is a parallel curved surface to the sidewall of the first downward pressing groove. The second downward pressing groove and the first downward pressing groove form a stepped groove.

[0013] Preferably, the upper pressing groove includes: a first upper pressing groove, a second upper pressing groove, and a third upper pressing groove. The first upper pressing groove is disposed on the upper forging die, and the first upper pressing groove is adapted to the first lower pressing groove, wherein the orthographic projection of the first upper pressing groove on the horizontal plane overlaps with the orthographic projection of the first lower pressing groove on the horizontal plane.

[0014] The second upper pressing groove is disposed in an annular groove outside the first upper pressing groove. The third upper pressing groove is disposed between the first and second upper pressing grooves, and the depth of the third upper pressing groove is less than the depth of the first and second upper pressing grooves. The position of the third upper pressing groove is adapted to the position of the first lower pressing groove, and the inner edge of the third upper pressing groove overlaps with the upper edge of the first lower pressing groove on the horizontal plane.

[0015] Preferably, the edge line at the upper end of the cutting groove has the same structure as the edge line on the side of the first upper flat groove, the upper part of the cutting groove is a vertical sidewall, the lower part of the cutting groove is an inclined surface, and the area of ​​the horizontal cross section increases when the cutting groove is downward.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model can press down the intermediate rod according to the lower pressing flat groove and the upper pressing flat groove. The upset ball can be pressed down into a plate-shaped structure. Combining the shapes of the lower pressing flat groove and the upper pressing flat groove, the outer side of the plate-shaped structure has a flash.

[0018] Simultaneously, during the pressing process of the lower and upper flat grooves, the trimming punch presses down, leaving the flash of the plate-shaped structure between the upper and lower forging dies. The main body of the plate-shaped structure is pressed into the trimming groove. This invention can simultaneously perform the pressing operation on intermediate rods and simultaneously trim the edges of the pressed intermediate rods. It has the advantages of high operation quality and high efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a partial cross-sectional view of the present invention;

[0022] Figure 3 This is a structural diagram of the lower forging die of this utility model;

[0023] Figure 4 For the present utility model Figure 3 Sectional view of AA;

[0024] Figure 5 This utility model Figure 3 BB section view. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] like Figures 1 to 5 As shown, some embodiments of this utility model provide a chain hoof ring flattening and trimming device. This chain hoof ring flattening and trimming device is applied to chain hoof ring processing. The initial material for chain hoof ring processing includes an intermediate rod, which comprises a straight rod and upsetting balls, with an upsetting ball fixed at each end of the straight rod.

[0029] The chain hoof ring flattening and trimming device includes: an upper forging die 1, a trimming punch 2, and a lower forging die 3. The upper forging die 1 is an integral metal block structure. The lower end face of the upper forging die 1 is horizontal, and an upper flattening groove 12 is provided on the lower end face of the upper forging die 1. The shape of the upper flattening groove 12 is adapted to the shape of the intermediate rod.

[0030] A trimming punch 2 is also fixed on the upper forging die 1, protruding from the lower end face of the upper forging die 1. The lower forging die 3 is a metal block structure, fixed directly below the upper forging die 1. The upper end face of the lower forging die 3 is horizontal, and a downward pressing groove 32 is provided on the upper end face of the lower forging die 3. The downward pressing groove 32 is located directly below the upper pressing groove 12, and the shape of the downward pressing groove 32 is adapted to the shape of the intermediate rod. The downward pressing groove 32 and the upper pressing groove 12 cooperate to press the upsetting ball into a disc structure. A trimming through groove 33 is also provided on the upper part of the lower forging die 3, and the trimming through groove 33 is located directly below the trimming punch 2. The trimming through groove 33 and the trimming punch 2 cut off the edge of the flattened intermediate rod.

[0031] The chain hoof ring flattening and trimming device further includes: a frame, a hydraulic mechanism, an upper template 4, and a lower template 5. The frame is fixed relative to the ground. The hydraulic mechanism is fixed on the frame, and the hydraulic mechanism includes a piston that reciprocates in the vertical direction.

[0032] The lower end face of the upper template 4 is horizontal. The upper template 4 is positioned directly above the upper forging die 1, and its orthographic projection on the horizontal plane completely covers the orthographic projection of the upper forging die 1 on the horizontal plane. The upper template 4 is fixedly connected to the piston. The lower template 5 is positioned below the lower forging die 3 and is fixedly connected to the frame. The upper end face of the lower template 5 is horizontal, and a mounting groove is provided on its upper end face. The lower forging die 3 is positioned within the mounting groove.

[0033] The upper forging die 1 is provided with at least two upper pin holes 11, which are vertically arranged through holes. The lower forging die 3 is provided with at least two lower pin holes 31, which are aligned with the corresponding upper pin holes 11 and are vertically arranged through holes.

[0034] The chain hoof ring flattening and trimming device further includes: a pin, with one pin inserted into each of the upper pin holes 11, and the pin also passing through the lower pin hole 31.

[0035] The pressing groove 32 includes a first pressing groove 321 and a second pressing groove 322. The first pressing groove 321 is disposed on the lower forging die 3. The first pressing groove 321 includes an elongated groove and a circular groove. A circular groove is provided at each end of the elongated groove, and the elongated groove and the circular groove are connected. The sidewalls of the elongated groove and the circular groove are smoothly connected. The second pressing groove 322 is located above the first pressing groove 321, and the side surface of the second pressing groove 322 is a parallel curved surface to the side surface of the first pressing groove 321. The second pressing groove 322 and the first pressing groove 321 form a stepped groove.

[0036] The upper pressing groove 12 includes a first upper pressing groove 121, a second upper pressing groove 122, and a third upper pressing groove 123. The first upper pressing groove 121 is disposed on the upper forging die 1, and the first upper pressing groove 121 is adapted to the first lower pressing groove 321. The shape of the orthographic projection of the first upper pressing groove 121 on the horizontal plane overlaps with the shape of the orthographic projection of the first lower pressing groove 321 on the horizontal plane.

[0037] The second upper pressing groove 122 is disposed in the annular groove outside the first upper pressing groove 121. The third upper pressing groove 123 is disposed between the first upper pressing groove 121 and the second upper pressing groove 122, and the depth of the third upper pressing groove 123 is less than the depth of the first upper pressing groove 121 and the second upper pressing groove 122. The position of the third upper pressing groove 123 is adapted to the position of the first lower pressing groove 321. The inner edge of the third upper pressing groove 123 overlaps with the orthographic projection of the upper edge of the first lower pressing groove 321 on the horizontal plane.

[0038] The edge line at the upper end of the cut edge through groove 33 has the same structure as the edge line on the side of the first upper flat groove 121. The upper part of the cut edge through groove 33 is a vertical sidewall, the lower part of the cut edge through groove 33 is an inclined surface, and the area of ​​the horizontal cross section increases when the cut edge through groove 33 is downward.

[0039] The operation process of this utility model is as follows:

[0040] When this utility model is in operation, the lower forging die 3 is placed in the mounting groove of the lower template 5, and the intermediate rod is placed in the lower pressing groove 32. Specifically, the intermediate rod is placed in the first lower pressing groove 321.

[0041] The upper forging die 1 is fastened onto the lower forging die 3. At this time, the intermediate rod is still located in the first upper flattening groove 121. To ensure that the upper forging die 1 does not shift when pressing the lower forging die 3, a pin can be inserted into the pin hole (it can be understood that the distance between the lower end of the pin and the lower end of the pin hole is greater than the downward displacement distance of the upper forging die 1). An upper template 4 is set above the upper forging die 1. The upper template 4 moves downward, driving the upper forging die 1 to press the lower forging die 3, flattening both ends of the intermediate rod. At the same time, excess material enters the space between the second lower flattening groove 322 and the second upper flattening groove 122 through the third upper flattening groove 123.

[0042] The pressed intermediate rod is placed in the edge-cutting groove 33. During flattening, the portions of the intermediate rod located at the first upper flattening groove 121 can be inserted into the edge-cutting groove 33, while the portions of the intermediate rod located at the third upper flattening groove 123 and the second upper flattening groove 122 are located outside the edge-cutting groove 33. The edge-cutting punch 2 presses down to separate the portions of the intermediate rod located in the edge-cutting groove 33 from the portions of the third upper flattening groove 123 and the second upper flattening groove 122, thereby achieving edge cutting.

[0043] Understandably, the hydraulic mechanism can be a hydraulic cylinder or an electro-hydraulic actuator, used to drive the upper template 4 to reciprocate in the vertical direction.

[0044] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0045] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A chain ring pressing and trimming device for processing a chain ring, wherein the chain ring is made of an intermediate rod including a straight rod and a upsetting ball, and each end of the straight rod is fixed with a upsetting ball. characterized in that The chain ring pressing and trimming device comprises: an upper die, which is a metal block structure, and has a horizontal lower end surface, wherein an upper pressing groove is arranged on the lower end surface of the upper die, and the shape of the upper pressing groove is adapted to the shape of the intermediate rod; a trimming punch, which protrudes from the lower end surface of the upper die; a lower die, which is a metal block structure, and is fixed below the upper die, wherein the upper end surface of the lower die is horizontal, a lower pressing groove is arranged on the upper end surface of the lower die, the lower pressing groove is located below the upper pressing groove, the shape of the lower pressing groove is adapted to the shape of the intermediate rod, the lower pressing groove and the upper pressing groove cooperate to press the upsetting ball into a disc structure, and a trimming through groove is arranged on the upper die below the trimming punch, wherein the trimming through groove and the trimming punch trim the edges of the intermediate rod after pressing.

2. The chain link ring pinch trim device of claim 1, wherein, The chain ring pressing and trimming device further comprises: a frame, which is fixed relative to the ground; a hydraulic mechanism, which is fixed on the frame, and comprises a piston reciprocating in the vertical direction; an upper die plate, which is horizontally arranged above the upper die, and the horizontal projection of the upper die plate completely covers the horizontal projection of the upper die, wherein the upper die plate is fixedly connected with the piston; a lower die plate, which is arranged below the lower die, and is fixedly connected with the frame, wherein the upper end surface of the lower die plate is horizontal, and an installation groove is arranged on the upper end surface of the lower die plate, and the lower die is arranged in the installation groove.

3. The chain link flattening trimmer of claim 2 wherein, At least two upper pin holes are arranged on the upper die, and the upper pin holes are vertical through holes; At least two lower pin holes are arranged on the lower die, and the lower pin holes are coaxial with the corresponding upper pin holes, and the lower pin holes are vertical through holes; The chain ring pressing and trimming device further comprises: a pin shaft, one pin shaft is inserted into each upper pin hole, and the pin shaft penetrates through the lower pin hole.

4. The chain link flattening trimmer of claim 3 wherein, The lower pressing groove comprises: a first lower pressing groove, which is arranged on the lower die, and comprises a long slot and a circular slot, wherein one circular slot is arranged at each end of the long slot, and the long slot and the circular slot are connected, and the side walls of the long slot and the circular slot are smoothly connected; a second lower pressing groove, which is located above the first lower pressing groove, and the side surface of the second lower pressing groove is a parallel curved surface with the side surface of the first lower pressing groove, wherein the second lower pressing groove and the first lower pressing groove form a stepped groove.

5. The chain link crush trim device of claim 4, wherein, The upper pressing groove comprises: The first upper flattening groove is arranged on the upper forging die, and the first upper flattening groove is adapted to the first lower flattening groove, and the shape of the horizontal projection of the first upper flattening groove is overlapped with the shape of the horizontal projection of the first lower flattening groove; The second upper flattening groove is arranged on the annular groove outside the first upper flattening groove; The third upper flattening groove is arranged between the first upper flattening groove and the second upper flattening groove, and the depth of the third upper flattening groove is smaller than the depth of the first upper flattening groove and the second upper flattening groove, the position of the third upper flattening groove is adapted to the position of the first lower flattening groove, and the inner side edge line of the third upper flattening groove is overlapped with the horizontal projection of the upper end edge line of the first lower flattening groove.

6. The chain link crush trim device of claim 1, wherein, The edge cutting groove upper end edge line and the first upper flattening groove side edge line have the same structure, The upper part of the edge cutting groove is a vertical side wall, and the lower part of the edge cutting groove is an inclined surface, and the horizontal cross-sectional area of the edge cutting groove increases downward.

Images