Stamping tool for automobile lower swing arm

Abstract

The utility model provides a stamping tool for a lower swing arm of an automobile, which is used for stamping two lining holes at the end of the lower swing arm and comprises a support body, a mounting bottom plate is arranged on the support body, a positioning pin is arranged on the mounting bottom plate and inserted into a positioning hole of the lower swing arm, a limit step is arranged on the inner side of the lower swing arm, and the limit step is matched with the lower swing arm. The lower swing arm is clamped on the periphery of the limiting step; stamping devices are arranged at the positions, corresponding to the lining holes, of the outer side of the lower swing arm respectively, each stamping device comprises a punching oil cylinder installed on the support body and a guide base installed on the installation bottom plate, through the oppositely-arranged punching oil cylinders, it is guaranteed that the lower swing arm is stressed in a balanced mode in the punching machining process, the complex clamping procedure is omitted, the positioning holes serve as the benchmark, and the punching efficiency is improved. Two lining holes are machined at the same time, the position precision is high, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a stamping tool, in particular to a stamping tool for a lower swing arm of an automobile. Background Art

[0002] The lower arm of a car is an important part of the car suspension system. Its main function is to support the car body and shock absorber, and to buffer the vibration during driving. Most existing lower arms of cars are made of sheet metal welding. After welding, positioning holes or bushing holes need to be processed for assembly or connection with other suspension system parts.

[0003] After the existing automobile lower arm is welded, the positioning holes or bushing holes are processed and manufactured in sequence in the processing equipment of the process. This processing method involves multiple clamping and the positioning reference is also changing, so the position accuracy between each hole is low, and the single process processing requires clamping and loading and unloading each time, and the processing efficiency is relatively low. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the processing accuracy and efficiency of the existing automobile lower swing arm are low. The utility model provides a stamping tool for the automobile lower swing arm to solve the above problem.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a stamping tool for a lower swing arm of an automobile, which is used for stamping two bushing holes at the end of the lower swing arm, comprising a bracket body, a mounting base plate is arranged on the bracket body, a locating pin is arranged on the mounting base plate, the locating pin is inserted into the locating hole of the lower swing arm, a limiting step is arranged on the inner side of the lower swing arm, and the lower swing arm is engaged with the outer periphery of the limiting step; on the outer side of the lower swing arm, a stamping device is respectively arranged at each of the bushing holes, the stamping device comprises a punching cylinder installed on the bracket body and a guide seat installed on the mounting base plate, a guide hole is arranged in the guide seat, a punch is arranged at the end of the piston rod of the punching cylinder, the piston rod of the punching cylinder passes through the guide hole and the punch abuts against the end of the lower swing arm.

[0006] Furthermore: the middle part of the limiting step is a hollow blanking part, and a blanking hole is arranged on the limiting step at a position corresponding to the bushing hole, and the blanking hole is connected to the blanking part.

[0007] Furthermore: the punching cylinder is connected to a stamping hydraulic system, which includes a hydraulic pump connected to an oil tank, a relief valve arranged at the outlet of the hydraulic pump, a reversing valve arranged at the outlet of the hydraulic pump, a flow-dividing and collecting valve connected to the reversing valve, and a hydraulically controlled one-way valve connecting the flow-dividing and collecting valve and the punching cylinder; there are two hydraulically controlled one-way valves, which are respectively arranged at the oil inlets of the rodless chambers of the two punching cylinders, the inlets of the two hydraulically controlled one-way valves are respectively connected to the two outlets of the flow-dividing and collecting valves, and the control ports of the hydraulically controlled one-way valves are both connected to the rod chambers of the punching cylinders, and the rod chambers of the punching cylinders are connected to each other and to the oil tank after passing through the reversing valves.

[0008] Furthermore: the reversing valve is a three-position four-way electromagnetic reversing valve, wherein the position function is H type.

[0009] The beneficial effect of the utility model is that the stamping tooling of the automobile lower control arm of the present application ensures that the lower control arm is subjected to balanced force during the punching process through relatively arranged punching cylinders, thereby eliminating complicated clamping procedures and simultaneously processing two bushing holes based on the positioning hole, thereby having higher positioning accuracy and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0011] Figure 1 It is a structural schematic diagram of a stamping tooling for a lower swing arm of an automobile according to the utility model;

[0012] Figure 2 yes Figure 1 The stamping tooling of the automobile lower arm omits the structural schematic diagram of the lower arm;

[0013] Figure 3 yes Figure 1 A in the enlarged view;

[0014] Figure 4 It is the schematic diagram of the stamping hydraulic system.

[0015] In the figure, 1, lower arm, 2, bracket body, 3, mounting base, 4, positioning pin, 5, positioning hole, 6, limiting step, 7, punching cylinder, 8, guide seat, 9, punch, 10, blanking part, 11, blanking hole, 12, oil tank, 13, hydraulic pump, 14, overflow valve, 15, reversing valve, 16, diverter and collector valve, 17, hydraulically controlled one-way valve. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0017] 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", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In addition, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0019] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0020] like Figures 1 to 4As shown, the utility model provides a stamping tool for a lower swing arm 1 of an automobile, which is used for stamping two bushing holes at the end of the lower swing arm 1, including a bracket body 2, a mounting base plate 3 is provided on the bracket body 2, a locating pin 4 is provided on the mounting base plate 3, the locating pin 4 is inserted into the locating hole 5 of the lower swing arm 1, a limiting step 6 is provided on the inner side of the lower swing arm 1, and the lower swing arm 1 is engaged with the outer periphery of the limiting step 6; on the outer side of the lower swing arm 1, a stamping device is respectively provided at each of the bushing holes, the stamping device includes a punching cylinder 7 installed on the bracket body 2 and a guide seat 8 installed on the mounting base plate 3, a guide hole is provided in the guide seat 8, a punch 9 is provided at the end of the piston rod of the punching cylinder 7, the piston rod of the punching cylinder 7 passes through the guide hole and the punch 9 abuts against the end of the lower swing arm 1.

[0021] After the positioning hole 5 in the middle of the lower swing arm 1 is processed, the two bushing holes at its end can be processed by the present stamping tool. The specific processing process is to first place the lower swing arm 1 to be punched in the mounting base plate 3, wherein the positioning pin 4 is inserted into the positioning hole 5 of the lower swing arm 1 to complete the preliminary positioning operation, and then the piston rod of the punching cylinder 7 extends through the guide seat 8 to punch the punch 9 onto the surface of the parts of the lower swing arm 1. The piston rod of the punching cylinder 7 continues to extend, and the punch 9 will punch out the bushing hole at the end of the lower swing arm 1. This positioning and processing method can ensure that the positioning hole 5 and the two bushing holes have a high position accuracy, and two bushing holes can be obtained at the same time in one punching process, which greatly improves the working efficiency.

[0022] In the stamping process of the present application, the lower swing arm 1 is subjected to punching forces in relative directions at the same time, and the lower swing arm 1 can maintain a balanced and stable state. Therefore, no additional clamping force is required to limit the displacement of the lower swing arm 1. The lower swing arm 1 is only clamped on the limit step 6, and only the limit step 6 and the guide seat 8 provide position restrictions to avoid abnormal deformation. The above-mentioned bushing hole stamping process can be completed with only the locating pin 4 for positioning, and there is no need for complicated clamping and clamping auxiliary processes, which improves the work efficiency of loading and unloading in the stamping process.

[0023] The middle of the limiting step 6 is a hollow blanking portion 10, and a blanking hole 11 is provided on the limiting step 6 at a position corresponding to the bushing hole, and the blanking hole 11 is connected to the blanking portion 10. When the punch 9 punches out the bushing hole, the punched waste will be pushed into the blanking portion 10 by the punch 9 through the blanking hole 11, and the blanking portion 10 collects the punched waste and processes it regularly.

[0024] The punching cylinder 7 is connected to a punching hydraulic system, which includes a hydraulic pump 13 connected to an oil tank 12, a relief valve 14 arranged at the outlet of the hydraulic pump 13, a reversing valve 15 arranged at the outlet of the hydraulic pump 13, a diverter and collector valve 16 connected to the reversing valve 15, and a hydraulically controlled one-way valve 17 connecting the diverter and collector valve 16 and the punching cylinder 7; there are two hydraulically controlled one-way valves 17, which are respectively arranged at the oil inlets of the rodless chambers of the two punching cylinders 7, the inlets of the two hydraulically controlled one-way valves 17 are respectively connected to the two outlets of the diverter and collector valve 16, and the control ports of the hydraulically controlled one-way valves 17 are both connected to the rod chambers of the punching cylinder 7, and the rod chambers of the punching cylinder 7 are connected to each other and to the oil tank 12 after passing through the reversing valve 15.

[0025] The punching cylinder 7 is controlled by the stamping hydraulic system. The specific process is that the hydraulic pump 13 pumps out the hydraulic oil with pressure and then changes direction through the reversing valve 15. When the stamping is working, the hydraulic oil of the hydraulic pump 13 is diverted through the diverting and collecting valve 16, and flows into the two punching cylinders 7 respectively after passing through the hydraulic control one-way valve 17. The diverting and collecting valve 16 can ensure that the flow rate of the hydraulic oil supplied to the punching cylinder 7 is the same, ensuring that the piston rods of the punching cylinder 7 can be pushed forward synchronously, that is, the punching process is completed synchronously, ensuring the synchronous punching of the two punching cylinders 7, and ensuring that the lower swing arm 1 is subjected to a balanced punching force. The hydraulic control one-way valve 17 can ensure sufficient locking force of the punching cylinder 7 and optimize the punching quality.

[0026] When the punching process is completed, the reversing valve 15 switches the direction, and the hydraulic oil flows directly into the rod chamber of the punching cylinder 7 through the reversing valve 15, driving the piston rod of the punching cylinder 7 to retract and retreat. At this time, the pressure of the hydraulic oil in the rod chamber of the punching cylinder 7 will open the valve core of the hydraulically controlled one-way valve 17, and connect the rodless chamber of the punching cylinder 7 to the oil tank 12, so as to ensure the smooth retraction and retreat of the punching cylinder 7.

[0027] The reversing valve 15 is a three-position four-way electromagnetic reversing valve 15, and its middle position function is H-type. The reversing valve 15 can quickly switch the movement direction of the piston rod of the punching cylinder 7, and the H-type middle position function can ensure that the hydraulic pump 13 can release pressure smoothly in the middle position, thereby ensuring the stability of the hydraulic system.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A stamping tool for a lower arm of an automobile, used for stamping two bushing holes at the end of the lower arm (1), characterized in that: The invention comprises a support body (2), a mounting base plate (3) being provided on the support body (2), a positioning pin (4) being provided on the mounting base plate (3), the positioning pin (4) being inserted into a positioning hole (5) of the lower swing arm (1), a limiting step (6) being provided on the inner side of the lower swing arm (1), the lower swing arm (1) being engaged with the outer periphery of the limiting step (6); a punching device is provided on the outer side of the lower swing arm (1) corresponding to each bushing hole, the punching device comprises a punching cylinder (7) mounted on the support body (2) and a guide seat (8) mounted on the mounting base plate (3), a guide hole being provided in the guide seat (8), a punch (9) being provided at the end of the piston rod of the punching cylinder (7), the piston rod of the punching cylinder (7) passing through the guide hole and the punch (9) abutting against the end of the lower swing arm (1).

2. The stamping tool for the lower arm of an automobile as claimed in claim 1, characterized in that: The middle part of the limiting step (6) is a hollow blanking portion (10), and a blanking hole (11) is provided on the limiting step (6) at a position corresponding to the bushing hole, and the blanking hole (11) is connected to the blanking portion (10).

3. The stamping tool for the lower arm of an automobile as claimed in claim 2, characterized in that: The punching cylinder (7) is connected to a punching hydraulic system, the punching hydraulic system comprising a hydraulic pump (13) connected to an oil tank (12), a relief valve (14) arranged at the outlet of the hydraulic pump (13), a reversing valve (15) arranged at the outlet of the hydraulic pump (13), a flow dividing and collecting valve (16) connected to the reversing valve (15), and a hydraulically controlled one-way valve (17) connected to the flow dividing and collecting valve (16) and the punching cylinder (7); There are two hydraulically controlled one-way valves (17), which are respectively arranged at the oil inlets of the rodless chambers of the two punching cylinders (7). The inlets of the two hydraulically controlled one-way valves (17) are respectively connected to the two outlets of the flow dividing and collecting valve (16). The control ports of the hydraulically controlled one-way valves (17) are both connected to the rod chambers of the punching cylinders (7). The rod chambers of the punching cylinders (7) are connected to each other and are connected to the oil tank (12) after passing through the reversing valve (15).

4. The stamping tool for the lower arm of an automobile as claimed in claim 3, characterized in that: The reversing valve (15) is a three-position four-way electromagnetic reversing valve (15), wherein the position function is of H type.

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