Machining device for drilling and tapping spherical pin of trailer

Abstract

The invention relates to a machining device for drilling and tapping of a spherical pin of a trailer. The machining device comprises a bottom plate, a supporting frame, a positioning mechanism and a limiting mechanism. The bottom plate is installed on the supporting frame, an opening is formed in the bottom plate, and the shape and the size of the opening are matched with those of a bottom sphere of a spherical pin workpiece; the positioning mechanism is a concave circular truncated cone installed on the bottom plate, the concave circular truncated cone is arranged at an opening in the bottom plate, a step structure is arranged on the inner wall of the concave circular truncated cone, and the inner diameter of the concave circular truncated cone and the step structure are matched with a top disc of the spherical pin workpiece; the limiting mechanism comprises a hydraulic mechanism and a pressing plate, the hydraulic mechanism is installed on the bottom plate, the pressing plate is connected with the output end of the hydraulic mechanism, and the pressing plate rotates and moves up and down under the action of the hydraulic mechanism. Compared with the prior art, the drilling and tapping device is high in efficiency, low in cost, free of size adjustment, convenient and efficient, automatic clamping is achieved through a hydraulic clamp in the whole drilling and tapping process, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to a processing device, in particular to a processing device for drilling and tapping a ball pin of a trailer. Background Art

[0002] The ball pin is a component on the trailer. The existing process sequence is to use a drilling and tapping machine for processing. The way to fix the ball pin workpiece is to clamp the outer diameter of the workpiece with a three-jaw chuck. Two processes are required, using a drilling template, a drill bit to drill the hole, and then using a tap to tap. The equipment utilization rate is low, the requirements for operators are high, and the working hours are long.

[0003] Therefore, it is necessary to improve the processing device of the ball pin. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a processing device for drilling and tapping a ball pin of a trailer.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A processing device for drilling and tapping a ball pin of a trailer, comprising a base plate, a support frame, a positioning mechanism and a limiting mechanism;

[0007] The bottom plate is mounted on the support frame, and an opening is provided on the bottom plate, and the shape and size of the opening are adapted to the bottom sphere of the spherical pin workpiece;

[0008] The positioning mechanism is a concave truncated cone installed on the bottom plate, the concave truncated cone is arranged at the opening on the bottom plate, the inner wall of the concave truncated cone is provided with a stepped structure, and the inner diameter of the concave truncated cone and the stepped structure are adapted to the top disc of the spherical pin workpiece;

[0009] The limiting mechanism comprises a hydraulic mechanism and a pressing plate, wherein the hydraulic mechanism is mounted on a bottom plate, and the pressing plate is connected to an output end of the hydraulic mechanism. Under the action of the hydraulic mechanism, the pressing plate rotates and moves up and down.

[0010] Furthermore, it also includes a position adjustment mechanism, which includes an auxiliary positioning block, an auxiliary plate and an embedded block, the auxiliary positioning block is installed on the base plate, the auxiliary plate is rotatably connected to the auxiliary positioning block, and the embedded block is installed on the auxiliary plate. When the auxiliary plate is rotated to above the concave cone, the position of the embedded block falls at a pre-defined position inside the concave cone, and the spherical pin workpiece is provided with a positioning hole matching the shape of the embedded block.

[0011] Furthermore, the embedded block is installed on the inner side of the auxiliary plate, and an auxiliary handle is provided on the outer side of the auxiliary plate.

[0012] Furthermore, the support frame includes a ground plate and a plurality of vertical plates, the ground plate is connected to the bottom plate via the plurality of vertical plates, and the plurality of vertical plates are parallel to each other.

[0013] Furthermore, the hydraulic mechanism is a corner oil cylinder, and the base plate is provided with an oil circuit cooperating with the corner oil cylinder.

[0014] Furthermore, the corner oil cylinder is installed on an oil cylinder seat, and the oil cylinder seat is installed on a base plate.

[0015] Furthermore, the oil circuit is connected with an inlet and outlet valve.

[0016] Furthermore, a plurality of positioning mechanisms are provided on the bottom plate, and limiting mechanisms are provided on both sides of each positioning mechanism.

[0017] Furthermore, the plurality of positioning mechanisms are distributed on the bottom plate at equal intervals, and two adjacent positioning mechanisms share a limiting mechanism.

[0018] Furthermore, an inlet and outlet communicated with the opening are provided on one side of the bottom plate, and a notch is left at a position of the convex truncated cone corresponding to the inlet and outlet.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) A processing device for ball pin workpieces is designed, which is efficient and low-cost. It does not require size adjustment and is convenient and efficient. The entire drilling and tapping process is automatically clamped by a hydraulic clamp, which greatly improves work efficiency.

[0021] (2) Good stability and high processing accuracy. Compared with the previous manual clamping, the improved automatic hydraulic clamp accurately locates the drilling holes, eliminating the problem of hole size out of tolerance and dimensional instability caused by manual operation. Therefore, the drilling and tapping processing has good dimensional stability and high dimensional accuracy of the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of placing a workpiece on the present invention;

[0023] Figure 2 A top view and a cross-sectional view of a workpiece placed on the present invention;

[0024] Figure 3 This is a schematic diagram of the auxiliary board and the auxiliary handle;

[0025] Figure numerals: 1. base plate, 2. workpiece, 3. concave cone, 4. auxiliary positioning block, 5. auxiliary plate, 6. embedded block, 7. auxiliary handle, 8. hydraulic mechanism, 9. pressure plate, 10. grounding plate, 11. vertical plate, 12. auxiliary boss. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all embodiments, and the protection scope of the present invention is not limited to the following embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0027] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer and show the matching relationship between the various components, some parts in the drawings are appropriately scaled, and the distance between the components is increased or decreased.

[0028] In the description of the embodiments of the present application, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They 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 specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] Embodiment 1:

[0032] A processing device for drilling and tapping a ball pin of a trailer, such as Figure 1 , Figure 2As shown, it includes a base plate 1, a support frame, a positioning mechanism and a limiting mechanism; the base plate 1 is installed on the support frame, and an opening is provided on the base plate 1, and the shape and size of the opening are adapted to the bottom sphere of the spherical pin workpiece 2; the positioning mechanism is a concave truncated cone 3 installed on the base plate 1, and the concave truncated cone 3 is arranged at the opening on the base plate 1, and the inner wall of the concave truncated cone 3 is provided with a step structure, and the inner diameter and the step structure of the concave truncated cone 3 are adapted to the top disk of the spherical pin workpiece 2; the limiting mechanism includes a hydraulic mechanism 8 and a pressure plate 9, the hydraulic mechanism 8 is installed on the base plate 1, and the pressure plate 9 is connected to the output end of the hydraulic mechanism 8, and the pressure plate 9 rotates and moves up and down under the action of the hydraulic mechanism 8.

[0033] In the technical solution of the present application, the spherical pin workpiece 2 is placed in the opening of the bottom plate 1. The lower part of the spherical pin workpiece 2 is a spherical structure, and the upper part is a disc structure. The opening of the bottom plate 1 is not a cylindrical hole, but a hole adapted to the sphere. The aperture is adjusted with the spherical structure. When the spherical pin workpiece 2 is placed in the opening, the bottom surface of the disc contacts the stepped structure of the inner wall of the concave truncated cone 3. If the thickness of the bottom plate 1 is large (larger than the size of the spherical structure), the spheres are all located inside the bottom plate 1. If the thickness of the bottom plate 1 is small (smaller than the size of the spherical structure), part of the sphere will be exposed outside the bottom plate 1. When taking and placing the spherical pin workpiece 2, put the workpiece 2 into the opening from top to bottom, and take out the workpiece 2 from bottom to top.

[0034] Considering that the gap between the workpiece 2 and the circular concave truncated cone 3 is required to be very small, in order to facilitate the removal of the workpiece 2, an inlet and outlet connected to the opening are provided on one side of the base plate 1, and a gap is left at the position of the concave truncated cone 3 corresponding to the inlet and outlet, so that it is easier to remove and place the workpiece 2.

[0035] The processing position of the ball pin workpiece 2 is the 8 holes on the end face of the disc. In order to ensure the accuracy of the position, a position adjustment mechanism is set. The position adjustment mechanism includes an auxiliary positioning block 4, an auxiliary plate 5 and an embedded block 6. The auxiliary positioning block 4 is installed on the bottom plate 1. The auxiliary plate 5 is rotatably connected with the auxiliary positioning block 4. The embedded block 6 is installed on the auxiliary plate 5. When the auxiliary plate 5 is rotated to the top of the concave truncated cone 3, the position of the embedded block 6 falls at a predetermined position inside the concave truncated cone 3. The ball pin workpiece 2 is provided with a positioning hole that matches the shape of the embedded block 6. Among them, there is an angle requirement between the positioning hole and the hole position to be processed. After the workpiece 2 is placed on the concave truncated cone 3, the auxiliary plate 5 is rotated to make the embedded block 6 fall, and the position of the workpiece 2 is adjusted so that the embedded block 6 falls into the positioning hole. At this time, the position adjustment of the workpiece 2 is completed and the workpiece 2 is straightened. After the workpiece 2 is straightened, the auxiliary plate 5 is rotated again to remove the auxiliary plate 5 and the embedded block 6 to avoid affecting the subsequent processing.

[0036] In the present application embodiment, Figure 3As shown, the embedded block 6 is installed on the inner side of the auxiliary plate 5, and an auxiliary handle 7 is provided on the outer side of the auxiliary plate 5, through which the auxiliary plate 5 can be easily driven to rotate. A protrusion is provided on the auxiliary positioning block 4, and a through hole is left on the protrusion. Two openings are provided at the end of the auxiliary plate 5. A connecting shaft or a pin shaft is used to pass through the opening of the auxiliary plate 5, the through hole of the auxiliary positioning block 4, and the opening of the auxiliary plate 5 to realize the rotation connection between the auxiliary plate 5 and the auxiliary positioning block 4.

[0037] In addition, the support frame includes a grounding plate 10 and a plurality of vertical plates 11, and the grounding plate 10 is connected to the base plate 1 through a plurality of vertical plates 11, and the plurality of vertical plates 11 are parallel to each other. The grounding plate 10 and the vertical plates can increase the height of the base plate 1 in the machining center, making it easier to place and process. And if the thickness of the base plate 1 is small (smaller than the size of the spherical structure), part of the sphere will be exposed outside the base plate 1, and the gap left between the grounding plate 10 and the base plate 1 can accommodate the exposed sphere. The vertical plates 11 can be connected to the grounding plate 10 and the base plate 1 by bolts, and the height of the vertical plates 11 can be determined according to the height of the machining center, etc.

[0038] Hydraulic / pneumatic clamps are special clamps that use oil pressure or air pressure as a power source and use hydraulic or pneumatic components to achieve positioning, support and clamping of the workpiece 2. Hydraulic / pneumatic clamps can accurately and quickly determine the relative position between the workpiece 2 and the machine tool and tool. The position accuracy of the workpiece 2 is guaranteed by the clamp, and the processing accuracy is high; the positioning and clamping process is rapid, which greatly saves the time of clamping and releasing the workpiece 2; at the same time, it has the advantages of compact structure, multi-station clamping, high-speed heavy cutting, and automatic control. The above advantages of hydraulic / pneumatic clamps make them particularly suitable for use in CNC machine tools, machining centers, and flexible production lines, especially suitable for mass processing.

[0039] In the embodiment of the present application, the hydraulic mechanism 8 is an angle cylinder FAM32 (double-sided), and an oil circuit cooperating with the angle cylinder is provided on the base plate 1. The angle cylinder is installed on the cylinder seat, and the cylinder seat is installed on the base plate 1. The angle cylinder cooperates with the cylinder seat to raise its height. The oil circuit is connected with inlet and outlet valves, and the inlet and outlet valves can control the on and off of the oil circuit.

[0040] There are two limit mechanisms, which are respectively arranged on both sides of the concave truncated table 3. The pressure plate 9 of each limit mechanism can rotate and move up and down. The hydraulic mechanism 8 drives the pressure plate 9 to rotate above the workpiece 2 and then presses it downward, thereby limiting the movement of the workpiece 2 in the Z axis and the rotation around the Z axis. It should be noted that the size of the pressure plate 9 should not be too large, and the position should be reasonably set to avoid blocking the position to be processed on the end face of the workpiece 2 and affecting the cutting.

[0041] The positioning mechanism is a concave truncated table 3, which realizes the position limitation of the workpiece 2 on the X axis and the Y axis. The position limiting mechanism includes a hydraulic mechanism 8 and a pressure plate 9, which presses the workpiece 2 by the pressure plate 9, realizes the position limitation of the workpiece 2 on the Z axis, and limits the rotation of the workpiece 2 around the Z axis.

[0042] Example 2

[0043] In this embodiment, a plurality of positioning mechanisms are arranged on the base plate 1, and a limiting mechanism is provided on both sides of each positioning mechanism. There are a plurality of spherical pin workpieces 2 to be clamped, and a plurality of workpieces 2 can be processed at the same time, which greatly improves the production efficiency.

[0044] When there are multiple positioning mechanisms, in order to save costs, the multiple positioning mechanisms can be evenly spaced on the base plate 1, and two adjacent positioning mechanisms share a limiting mechanism. In this embodiment, it is necessary to adjust the length of the pressure plate 9 or the position of the limiting mechanism to determine that the length of the pressure plate 9 can simultaneously press the workpieces 2 of the two positioning mechanisms, and one workpiece 2 is pressed by two pressure plates 9 at the same time to achieve limitation.

[0045] For the positioning mechanism located at the edge of the base plate 1, a corresponding limiting mechanism is a common limiting mechanism (called the first limiting mechanism), and the other limiting mechanism (called the second limiting mechanism) is only used for the positioning mechanism. In order to enable the pressure plate 9 of the second limiting mechanism to limit the workpiece 2, an auxiliary boss 12 is provided at the edge of the base plate 1. When the corner cylinder drives the pressure plate 9 to press downward, one end of the pressure plate 9 of the second limiting mechanism presses the workpiece 2, and the other end presses on the auxiliary boss 12.

[0046] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A processing device for drilling and tapping a ball pin of a trailer, characterized in that: It includes a base plate, a support frame, a positioning mechanism and a limiting mechanism; The bottom plate is mounted on the support frame, and an opening is provided on the bottom plate, and the shape and size of the opening are adapted to the bottom sphere of the spherical pin workpiece; The positioning mechanism is a concave truncated cone installed on the bottom plate, the concave truncated cone is arranged at the opening on the bottom plate, the inner wall of the concave truncated cone is provided with a stepped structure, and the inner diameter of the concave truncated cone and the stepped structure are adapted to the top disc of the spherical pin workpiece; The limiting mechanism comprises a hydraulic mechanism and a pressing plate, wherein the hydraulic mechanism is mounted on a bottom plate, and the pressing plate is connected to an output end of the hydraulic mechanism. Under the action of the hydraulic mechanism, the pressing plate rotates and moves up and down.

2. A processing device for drilling and tapping a ball pin of a trailer according to claim 1, characterized in that: It also includes a position adjustment mechanism, which includes an auxiliary positioning block, an auxiliary plate and an embedded block. The auxiliary positioning block is installed on the bottom plate, the auxiliary plate is rotatably connected to the auxiliary positioning block, and the embedded block is installed on the auxiliary plate. When the auxiliary plate is rotated to above the concave cone, the position of the embedded block falls at a pre-defined position inside the concave cone, and the spherical pin workpiece is provided with a positioning hole that matches the shape of the embedded block.

3. The device for drilling and tapping a ball pin of a trailer according to claim 1, characterized in that: The embedded block is installed on the inner side of the auxiliary plate, and an auxiliary handle is arranged on the outer side of the auxiliary plate.

4. The device for drilling and tapping a ball pin of a trailer according to claim 1, characterized in that: The support frame includes a ground plate and a plurality of vertical plates. The ground plate is connected to the bottom plate via the plurality of vertical plates, and the plurality of vertical plates are parallel to each other.

5. The device for drilling and tapping a ball pin of a trailer according to claim 1, characterized in that: The hydraulic mechanism is a corner oil cylinder, and the bottom plate is provided with an oil circuit that cooperates with the corner oil cylinder.

6. A processing device for drilling and tapping a ball pin of a trailer according to claim 5, characterized in that: The corner oil cylinder is installed on the oil cylinder seat, and the oil cylinder seat is installed on the bottom plate.

7. The device for drilling and tapping a ball pin of a trailer according to claim 5, characterized in that: The oil circuit is connected with an inlet and outlet valve.

8. The device for drilling and tapping a ball pin of a trailer according to claim 1, characterized in that: The bottom plate is provided with a plurality of positioning mechanisms, and both sides of each positioning mechanism are provided with limiting mechanisms respectively.

9. The device for drilling and tapping a ball pin of a trailer according to claim 1, characterized in that: The multiple positioning mechanisms are distributed on the bottom plate at equal intervals, and two adjacent positioning mechanisms share a limiting mechanism.

10. The device for drilling and tapping a ball pin of a trailer according to claim 1, characterized in that: An inlet and outlet communicated with the opening are also provided on one side of the bottom plate, and a notch is left at the position of the convex truncated cone corresponding to the inlet and outlet.

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