Machining positioning device and machining system for noise reduction part

Abstract

The invention discloses a machining and positioning device for a noise reduction part. The machining and positioning device comprises a supporting base and a three-edge sleeve. A receiving box containing groove is formed in the inner side of the lower end of the supporting base. A three-edged sleeve placing hole is formed in the center of the upper end of the supporting seat; the lower end opening of the edge sleeve placing hole is communicated with the top of the material receiving box accommodating groove; the three-edged sleeve comprises an upper-end sleeve body and a lower-end sleeve body which are distributed up and down; the lower end face of the upper end sleeve body is provided with shaft shoulders distributed in a surrounding mode. A lower end sleeve body of the three-edge sleeve is arranged in the edge sleeve placing hole; three part machining holes are evenly distributed in the three-edge sleeve in the circumferential direction. The part machining hole is used for placing a noise reduction part blank; a part machining hole vertically penetrates through the three-edged sleeve; each part machining hole comprises a guide hole and a triangular hole which are distributed up and down; three sharp edges are evenly distributed on the inner side wall of the periphery of the three-edged hole. The noise reduction part blank can be conveniently and reliably positioned, groove machining operation can be further conducted on the noise reduction part blank, and the machining quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining, in particular to a machining positioning device and machining system for noise reduction parts. BACKGROUND

[0002] The vehicle retarder is a mechanical tool for controlling the speed of the vehicle during the process of the vehicle sliding down the hump, and is the main speed regulating tool for the mechanical hump and the point type and point connection type automatic hump.

[0003] The upper surface of the rail noise reduction brake plate of the vehicle retarder product is provided with a plurality of counterbores, and a noise reduction part is installed in each counterbore. The noise reduction part serves to reduce the noise generated when the vehicle passes.

[0004] Referring to Figures 2a to 2d As shown in the figure, the finished noise reduction part 1 is a cylindrical part with a diameter a and a height h. The upper end of the noise reduction part 1 is provided with a guide end 101. The outer edge of the upper end of the guide end 101 is provided with a first chamfer 104 for facilitating installation into the counterbore of the brake plate. The lower end of the noise reduction part 1 is provided with a pressure receiving surface 102. The circumferential outer side of the noise reduction part 1 is uniformly provided with three vertical grooves 103 that penetrate the upper and lower end surfaces of the noise reduction part 1.

[0005] The function of the groove 103 is to discharge the air in the counterbore when the noise reduction part 1 is pressed into the counterbore, so as to avoid the noise reduction part 1 being pushed out of the counterbore due to the pressure of the compressed air in the counterbore, thereby causing a safety hazard.

[0006] Referring to Figures 1a to 1c As shown in the figure, the groove 103 needs to be machined on the noise reduction part blank 1-0 to obtain the finished noise reduction part 1 (the noise reduction part blank 1-0 is basically the same as the finished noise reduction part 1, except that it does not have the groove 103).

[0007] However, there is currently no machining positioning device that can conveniently, safely and reliably position the noise reduction part blank to be machined, thereby ensuring the machining quality and efficiency of the groove on the noise reduction part. SUMMARY

[0008] The present application aims to overcome the technical defects of the prior art and provides a machining positioning device and machining system for noise reduction parts.

[0009] To this end, the present application provides a machining positioning device for noise reduction parts, which comprises a support seat and a three-pronged sleeve.

[0010] The inner side of the lower end of the support seat is provided with a longitudinally distributed receiving box receiving groove for accommodating a receiving box.

[0011] A three-rib sleeve placement hole is vertically arranged in the center of the upper end of the support seat;

[0012] The lower end opening of the three-rib sleeve placement hole is directly connected with the top of the material receiving box accommodating groove;

[0013] The three-rib sleeve includes an upper end sleeve body and a lower end sleeve body arranged in an upper and lower manner;

[0014] The lower end surface of the upper end sleeve body is provided with a circumferentially distributed shaft shoulder;

[0015] The circumferentially distributed shaft shoulder is arranged on the upper portion of the lower end sleeve body;

[0016] The lower end sleeve body of the three-rib sleeve is arranged in the three-rib sleeve placement hole;

[0017] The three-rib sleeve is uniformly provided with three part machining holes along the circumference;

[0018] The part machining hole is used for placing a noise reduction part blank;

[0019] The part machining hole vertically penetrates through the three-rib sleeve;

[0020] Each part machining hole includes two component hole sections, i.e., a guide hole and a three-rib hole arranged in an upper and lower manner;

[0021] The guide hole and the three-rib hole are connected;

[0022] The inner side wall of the three-rib hole is uniformly provided with three vertical distribution sharp edges.

[0023] In addition, the application also provides a noise reduction part machining system, which includes the noise reduction part machining positioning device and a hydraulic machine.

[0024] The hydraulic machine is used for groove machining operation on the noise reduction part blank in the noise reduction part machining positioning device through the pressure head on the hydraulic machine to obtain a finished noise reduction part.

[0025] As can be seen from the technical solutions provided by the application, compared with the prior art, the application provides a noise reduction part machining positioning device and a machining system, which are designed scientifically, can conveniently and reliably position the noise reduction part blank to be machined, and are further beneficial to groove machining operation on the noise reduction part blank to be machined, thereby ensuring the machining quality of the groove on the noise reduction part, improving the machining efficiency of the workpiece, and having great practical significance.

[0026] The noise reduction part machining system provided by the application changes the traditional machining mode to a press forming mode of a press machine, which can significantly improve the machining efficiency of the workpiece.

[0027] The machining system of the noise reduction part effectively solves the machining problem of the groove on the circumferential outer side of the noise reduction part, is convenient and fast to operate, is convenient to maintain, greatly improves work efficiency, and can machine three noise reduction workpieces at a time, thereby saving time and effort. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figures 1a to 1c are three-dimensional structural schematic diagrams, front views and top views of the noise reduction part blank to be machined, respectively; Figures 2a to 2d are three-dimensional structural schematic diagrams, front views, side views and top views of the finished noise reduction part obtained after machining, respectively; Figures 3a to 3f is a three-dimensional structural schematic diagram, a front view, a left view, a right view, a bottom view and a top view of a machining positioning device of a noise reduction part provided by the present application; Figures 4a to 4d are three-dimensional structural schematic diagrams, front views, left views and top views of a machining positioning device of a noise reduction part provided by the present application, respectively, after placing the noise reduction part blank to be machined and before machining; Figures 5a to 5b are three-dimensional state schematic diagrams and front views of the noise reduction part blank placed on the machining positioning device of the noise reduction part provided by the present application after starting the hydraulic machine for machining (i.e. punch forming); Figures 6a to 6d are three-dimensional structural schematic diagrams, front views, sectional views and top views of the support frame, respectively; Figures 7a to 7e are three-dimensional structural schematic diagrams, top views, sectional views, front views and bottom views of the three-pronged sleeve, respectively; In the drawings, the noise reduction part is 1; the noise reduction part blank is 1-0; the guide end is 101, the pressure bearing surface is 102, the groove is 103, and the first chamfer is 104; the support seat is 2; the material receiving box containing groove (i.e. U-shaped groove) is 201, and the three-pronged sleeve placing hole is 202; the support seat chamfered portion is 203; the three-pronged sleeve is 3; the upper end sleeve body is 301, the lower end sleeve body is 302, the guide hole is 303, the three-pronged hole is 304, the sharp prong is 305; the second chamfer is 306, and the shaft shoulder is 307. DETAILED DESCRIPTION

[0039] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0041] In the description of the present application, it should be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0043] The technical solutions of the present application are further described below through specific embodiments. The details not mentioned in the embodiments are industry conventional technologies.

[0044] Referring to Figures 1a to 1c , Figures 2a to 2d , Figures 3a to 3f , Figures 4a to 4d , Figures 5a to 5b , Figures 6a to 6d and Figures 7a to 7e , the present application provides a machining positioning device for noise reduction parts, comprising a supporting seat 2 and a three-pronged sleeve 3; Among them, the inner side of the lower end of the supporting seat 2 is provided with a longitudinally distributed receiving box accommodating groove 201 for accommodating the receiving box; A three-pronged sleeve placement hole 202 is vertically arranged in the center of the upper end of the support base 2; The lower end of the three-pronged sleeve placement hole 202 is directly connected to the top of the material receiving box accommodating groove 201; The three-pronged sleeve 3 includes an upper end sleeve body 301 and a lower end sleeve body 302 arranged in a top-bottom manner (i.e., the upper end sleeve body 301 is located on the top of the lower end sleeve body 302). The lower end surface of the upper end sleeve body 301 is provided with circumferentially distributed shaft shoulders 307; The circumferentially distributed shaft shoulders 307 are located on the outer side of the upper part of the lower end sleeve body 302; The lower end sleeve body 302 of the three-pronged sleeve 3 is arranged in the three-pronged sleeve placement hole 202; The three-pronged sleeve 3 is uniformly distributed with three part machining holes along the circumference; The part machining holes are used to place the noise reduction part blank 1-0; The part machining holes vertically pass through the three-pronged sleeve 3; Each part machining hole includes two component hole sections, i.e., a guide hole 303 and a three-pronged hole 304 arranged in a top-bottom manner; The guide hole 303 and the three-pronged hole 304 are connected; The inner side wall of the three-pronged hole 304 is uniformly distributed with three vertically distributed sharp prongs 305.

[0058] It should be noted that the guide hole 303 is used to place the noise reduction part blank 1-0 to be machined and guide the movement path of the noise reduction part blank 1-0 when the noise reduction part blank 1-0 is subjected to downward pressure applied by an external hydraulic machine;

[0059] The three-pronged hole 304 is used to form vertically distributed grooves 103 on the circumferential side wall of the noise reduction part blank 1-0 when the noise reduction part blank 1-0 passes through the three-pronged hole 304 through the sharp prongs 305 thereof.

[0060] The shaft shoulders 307 of the lower end surface of the upper end sleeve body 301 are used to abut against (i.e., tightly contact) the top surface of the support base 2 when the lower end sleeve body 302 of the three-pronged sleeve 3 is placed in the three-pronged sleeve placement hole 202.

[0061] In the present application, the receiving box is a hollow square box with an open top or a hollow cylindrical box with an open top.

[0062] In particular, the cross-sectional area of the open top of the receiving box is larger than the cross-sectional area of the three-pronged sleeve 3.

[0063] In the present application, the overall shape of the support seat 2 is an inverted "N" shape.

[0064] In the present application, the support seat 2 has two longitudinal support seat chamfer portions 203 on the left and right sides of the top.

[0065] The two support seat chamfer portions 203 are symmetrically distributed.

[0066] In the present application, the cross-sectional shape of the three-pronged sleeve placement hole 202 is circular.

[0067] It should be noted that the support seat 2 has a three-pronged sleeve placement hole 202 passing through its upper surface and the receiving box receiving groove 201;

[0068] In the present application, the diameter of the three-pronged sleeve placement hole 202 is d'.

[0069] In the present application, the upper end sleeve 301 and the lower end sleeve 302 are integrally formed.

[0070] In particular, the upper end sleeve 301 and the lower end sleeve 302 are located on the same central axis.

[0071] In particular, the diameter D of the upper end sleeve 301 is larger than the diameter d of the lower end sleeve 302.

[0072] It should be noted that the three-pronged sleeve 3 is a stepped shaft, with the upper end sleeve 301 having a diameter D slightly larger and the lower end sleeve 302 having a diameter d slightly smaller.

[0073] In particular, the guide hole 303 is located in the upper and middle regions of the three-pronged sleeve 3.

[0074] In particular, the guide hole 303 and the three-pronged hole 304 are located on the same central axis.

[0075] The centers of the three guide holes 303 are located on the circumference of a circle, and the center of the circle is located on the central axis of the three-pronged sleeve 3.

[0076] It is to be noted that, for the three-pronged sleeve 3, on the circumference of a circle coaxial with the three-pronged sleeve 3, there are three guide holes 303 with a diameter A and a height H, and there is a three-pronged hole 304 coaxial with the guide hole 303 and penetrating to the lower end surface of the three-pronged sleeve 3.

[0077] It is to be noted that the three-pronged hole 304 is a hole with a diameter a' and a height h', and the circumference of the hole is provided with three evenly distributed sharp edges 305 for cutting the part to be machined on the noise-reducing part blank 1-0,

[0078] In the present application, for the three-pronged sleeve 3, the upper and lower hole openings of the three-pronged hole 304 are respectively circumferentially provided with a second chamfer 306;

[0079] In particular, the second chamfer 306 at the upper end opening of the three-pronged hole 304 has a slope height that increases with the distance from the central axis of the three-pronged hole 304;

[0080] The second chamfer 306 at the lower end opening of the three-pronged hole 304 has a slope height that decreases with the distance from the central axis of the three-pronged hole 304.

[0081] It is to be noted that the upper and lower end openings of the three-pronged hole 304 are provided with a second chamfer 306;

[0082] In the present application, for the three-pronged sleeve 3, the diameter d' of the three-pronged sleeve placement hole 202 is larger than the diameter d of the lower end sleeve body 302 (specifically, 2mm larger);

[0083] In the present application, for the three-pronged sleeve 3, the diameter A of the guide hole 303 is larger than the diameter a of the finished noise-reducing part 1 (specifically, 0.1mm larger);

[0084] The diameter a' of the three-pronged hole 304 is equal to the diameter a of the finished noise-reducing part 1 (the diameter of the noise-reducing part blank 1-0 is also a);

[0085] The height H of the guide hole 303 is equal to the height h of the finished noise-reducing part 1 (the height of the noise-reducing part blank 1-0 is also h);

[0086] The height h' of the three-pronged hole 304 is less than the height h of the finished noise-reducing part 1 (the height of the noise-reducing part blank 1-0 is also h).

[0087] In order to more clearly understand the technical solutions of the present application, the working process of the present application is described below.

[0088] First, place the support seat 2 in the device of the present application on the workbench of the single-arm hydraulic machine, and place the receiving box below the receiving box accommodating groove 201 of the support seat 2;

[0089] Then, the small end of the three-pronged sleeve 3 (i.e. the lower end sleeve body 302) is placed downward into the three-pronged sleeve placement hole 202 of the support seat 2;

[0090] Then, the guide ends 101 of the six to-be-processed noise reduction part rough pieces 1-0 (i.e. to-be-processed workpieces) are placed downward, two by two (two stacked one above the other as a group), a total of three groups, into the three guide holes 303 respectively (specifically: one noise reduction part rough piece 1-0 is contained in each guide hole 303, and another noise reduction part rough piece 1-0 is placed on the top surface of the noise reduction part rough piece 1-0, and the two noise reduction part rough pieces 1-0 in each group are vertically aligned), due to the existence of the sharp prongs 305 in the three-pronged holes 304, the to-be-processed noise reduction part rough pieces 1-0 are clamped at the second chamfer 306 in the three-pronged holes 304 (i.e. the position of the second chamfer 306 of the upper end opening of the three-pronged hole 304) when they are placed into the three-pronged holes 304 without force;

[0091] Since the diameter A of the guide hole 303 is slightly larger than the diameter a of the noise reduction part rough piece 1-0, the guide end 101 of the noise reduction part rough piece 1-0 needs to be first guided into the chamfer 306 to guide the center axis, to ensure that the three grooves 103 after processing are centered with the axis of the noise reduction part; since the height H of the guide hole 303 is equal to the height h of the noise reduction part rough piece 1-0, after two to-be-processed workpieces are placed into each guide hole 303 (specifically: one noise reduction part rough piece 1-0 is contained in each guide hole 303, and another noise reduction part rough piece 1-0 is placed on the top surface of the noise reduction part rough piece 1-0), there is a to-be-processed noise reduction part rough piece 1-0 above each guide hole (i.e. the position protruding from the upper plane of the three-pronged sleeve 3);

[0092] Then, the single-arm hydraulic machine is started, the pressure head above the single-arm hydraulic machine moves vertically downward and contacts the to-be-processed noise reduction part rough piece 1-0 (specifically: the pressure receiving surface 102) on the upper layer, applies a vertically downward pressure to the noise reduction part rough piece 1-0, and continues to move downward to the upper plane of the three-pronged sleeve 3, which is equivalent to moving the to-be-processed noise reduction part rough piece 1-0 vertically downward by a height of h, and the height h' of the three-pronged hole 304 is less than h, so at this time, the to-be-processed workpiece on the lower layer has protruded (h-h') above the lower plane of the three-pronged sleeve 3 after being vertically moved downward by a height of h by the to-be-processed workpiece above it, at this time, the worker continues to place another to-be-processed workpiece above (i.e. on the top) of the to-be-processed workpiece in each guide hole 303;

[0093] Then, the single-arm hydraulic machine is continued to be started, and the to-be-processed workpiece on the lowermost layer falls into the receiving box, and thus the groove processing of the three to-be-processed workpieces (i.e. three noise reduction part rough pieces 1-0) is completed at one time;

[0094] The above operation is repeated, and the machining of the next group of workpieces is completed.

[0095] In the present application, the single-arm hydraulic machine is a mature hydraulic machine in the prior art, which has been widely used. For example, the single-arm hydraulic machine produced by Shandong Zhongyou Heavy Industry Machinery Co., Ltd. (formerly Tengzhou Zhongyou Heavy Industry) can be used. The pressure head above the single-arm hydraulic machine can simultaneously contact and press downward on the pressure receiving surfaces 102 of three workpieces to be machined. Details are not described herein.

[0096] Based on the machining positioning device for noise reduction parts provided in the present application, the present application further provides a machining system for noise reduction parts, which comprises the machining positioning device for noise reduction parts as described above, and a hydraulic machine (for example, a single-arm hydraulic machine).

[0097] The hydraulic machine is used to perform the machining operation of the groove 103 on the noise reduction part blank 1-0 in the machining positioning device for noise reduction parts through the pressure head thereon, so as to obtain the finished noise reduction part.

[0098] Specifically, the hydraulic machine presses downward on the pressure receiving surface 102 of the noise reduction part blank 1-0 placed above the guide hole 303 in the machining positioning device for noise reduction parts through the pressure head thereon, so as to perform the machining operation of the groove 103 on the noise reduction part blank 1-0 in the machining positioning device for noise reduction parts, and obtain the finished noise reduction part 1.

[0099] In the present application, the hydraulic machine (for example, a single-arm hydraulic machine) is a mature machining device in the prior art, and details are not described herein.

[0100] The above description is only the preferred embodiments of the present application. It should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A machining positioning device for a noise reducing part, characterized in that, It comprises a supporting seat (2) and a three-pronged sleeve (3); The inner side of the lower end of the supporting seat (2) is provided with a longitudinally distributed receiving box accommodating groove (201) for accommodating the receiving box; The upper end of the supporting seat (2) is vertically provided with a three-pronged sleeve placing hole (202) at the center position; The lower end opening of the three-pronged sleeve placing hole (202) is directly connected with the top of the receiving box accommodating groove (201); The three-pronged sleeve (3) comprises an upper end sleeve body (301) and a lower end sleeve body (302) which are distributed in an up-down manner; The lower end surface of the upper end sleeve body (301) is provided with a circumferentially distributed shaft shoulder (307); The shaft shoulder (307) is circumferentially distributed on the outer side of the upper part of the lower end sleeve body (302); The lower end sleeve body (302) of the three-pronged sleeve (3) is arranged in the three-pronged sleeve placing hole (202); The three-pronged sleeve (3) is uniformly provided with three part machining holes along the circumference; The part machining hole is used for placing the noise reduction part blank (1-0); The part machining hole vertically penetrates through the three-pronged sleeve (3); Each part machining hole comprises two component hole sections, i.e., a guide hole (303) and a three-pronged hole (304) which are distributed in an up-down manner; The guide hole (303) and the three-pronged hole (304) are connected; The inner side wall of the three-pronged hole (304) is uniformly provided with three vertically distributed sharp edges (305).

2. The apparatus of claim 1 wherein, The receiving box is a hollow square box body with an open top or a hollow cylindrical box body with an open top; The cross-sectional area shape and size of the open top of the receiving box is larger than that of the three-pronged sleeve (3).

3. The apparatus of claim 1 wherein, The overall shape of the supporting seat (2) is an inverted "n" shape; The cross-sectional shape of the three-pronged sleeve placing hole (202) is circular.

4. The apparatus of claim 1 wherein, The top left and right sides of the supporting seat (2) are respectively provided with a longitudinally distributed supporting seat chamfer (203); The two supporting seat chamfers (203) are symmetrically distributed.

5. The apparatus of claim 1 wherein, The upper end sleeve body (301) and the lower end sleeve body (302) are integrally formed; The upper end sleeve body (301) and the lower end sleeve body (302) are located on the same center axis; The diameter D of the upper end sleeve body (301) is larger than the diameter d of the lower end sleeve body (302).

6. The apparatus of claim 1 wherein, The guide hole (303) and the three-pronged hole (304) are located on the same center axis; The centers of the three guide holes (303) are located on the circumference of a circle, and the center of the circle is located on the center axis of the three-pronged sleeve (3).

7. The apparatus of claim 1 wherein, For the three-pronged sleeve (3), the upper and lower end hole positions of the three-pronged hole (304) are respectively circumferentially provided with a second chamfer (306); The height of the second chamfer (306) at the upper end hole of the three-pronged hole (304) increases with the increase of the distance from the center axis of the three-pronged hole (304); The height of the second chamfer (306) at the lower end hole of the three-pronged hole (304) decreases with the increase of the distance from the center axis of the three-pronged hole (304).

8. The apparatus of claim 1 wherein, The diameter d' of the three-pronged sleeve placing hole (202) is larger than the diameter d of the lower end sleeve body (302); The diameter A of the guide hole (303) is larger than the diameter a of the finished noise reduction part (1). The diameter a' of the three-edge hole (304) is equal to the diameter a of the noise reduction part blank (1-0).

9. The machining positioning device of a noise reducing part according to any one of claims 1 to 8, characterized in that, The height H of the guide hole (303) is equal to the height h of the noise reduction part blank (1-0). The height h' of the three-edge hole (304) is less than the height h of the noise reduction part blank (1-0).

10. A system for machining a noise reducing part, characterized by The machining positioning device of the noise reduction part and the hydraulic machine are provided. The hydraulic machine is used to perform the groove (103) machining operation on the noise reduction part blank (1-0) in the machining positioning device of the noise reduction part through the pressure head on the hydraulic machine, so as to obtain the finished noise reduction part (1).

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