Local fixed-length knurling device for profile surface

Abstract

The utility model provides a profile surface local fixed-length knurling device. The profile surface local fixed-length knurling device comprises a frame, a knurling connecting rod mechanism and a power mechanism. The frame is a rectangular frame with openings in the front end and the rear end, and the rear end of the frame is provided with a fixing core block used for horizontally fixing a profile to the center of the frame. The two knurling connecting rod mechanisms are symmetrically arranged above and below a profile and conduct knurling operation on the upper surface and the lower surface of the profile to be knurled correspondingly, and each knurling connecting rod mechanism comprises a knurling shaft which is close to the surface of the profile in the non-operation process and tightly presses the surface of the profile in the operation process. The power mechanism comprises a downward pressing assembly and a horizontal pushing assembly. The mode that a product piece is static and the knurling shaft moves is adopted, power output of the knurling pull rod mechanism is provided by the downward pressing oil cylinder, the labor-saving lever structure is combined to apply pressure to the surface of a sectional material, the knurling shaft is pushed by the horizontal pushing oil cylinder to move, the knurling shaft is in press fit with the surface of the sectional material in the pressure state, and local positioning and fixed-length knurling treatment of the surface of the sectional material are achieved. The practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of metal parts processing technology, and in particular to a local fixed-length knurling device for profile surfaces. Background Technology

[0002] Knurling refers to the process of applying a knurling tool to the surface of metal shaft components to create a network of patterns. Its main purpose is to increase surface friction and improve anti-slip properties. It can also be used to enhance the surface morphology of components, making them more aesthetically pleasing. With the increasing diversification of component products, knurling is also becoming necessary for non-shaft components (i.e., flat parts).

[0003] Traditional knurling involves using a knurling wheel of a specific shape. The rotation of the workpiece drives the knurling wheel to rotate, thus creating patterns on the workpiece. However, this process is limited to shaft machining and cannot achieve flat knurling. For flat knurling, traditional stamping methods are typically used, with embossing replacing knurling. However, stamping dies have complex structures, high manufacturing costs, and are limited by the tonnage of the press. Large presses can easily damage the core and other dies, while small presses result in poor surface forming effects and cannot consistently achieve the design requirements for knurling.

[0004] Therefore, how to improve the existing embossing process and achieve mass knurling of planar parts has become an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a localized fixed-length knurling device for profile surfaces.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A partial fixed-length knurling device for a profile surface includes a frame, a knurling linkage mechanism, and a power mechanism. The frame is a rectangular frame with openings at both ends, and a fixing core block is provided at the rear end of the frame to horizontally fix the profile in the center of the frame. The knurling linkage mechanism consists of two sets, symmetrically arranged above and below the profile, respectively performing knurling operations on the upper and lower surfaces of the profile to be knurled. The knurling linkage mechanism includes a knurling shaft that is close to the profile surface when not in operation and presses against the profile surface when in operation. The power mechanism includes a pressing component that drives the knurling shaft to press downward against the profile surface, and a pushing component that drives the knurling shaft to move along the length direction of the profile surface.

[0008] A further improvement of this utility model is that: the knurled linkage mechanism includes a pair of connecting rods arranged opposite each other, and a fixed end rotating shaft, a knurled shaft, and a movable end rotating shaft are sequentially hinged between the two connecting rods from back to front, and the axial surface position of the knurled shaft is lower than the axial surface positions of the fixed end rotating shaft and the movable end rotating shaft; the shaft end of the fixed end rotating shaft is fixedly mounted on a sliding plate that can move horizontally along the top / bottom plate of the frame, and the movable end rotating shaft is connected to the power output end of the pressing assembly.

[0009] A further improvement of this utility model is that the sliding plate is set inside the frame, and the sliding plate and its corresponding top plate or bottom plate are horizontally slidably matched through the cooperation of guide rails and sliders.

[0010] A further improvement of this utility model is that the knurled connecting rod mechanism also includes an anti-bending mandrel for preventing the knurled shaft from flexing and deforming.

[0011] A further improvement of this utility model is that the anti-bending mandrel is disposed on the side of the knurling shaft away from the profile, and the roller profile of the anti-bending mandrel matches the roller profile of the knurling shaft.

[0012] A further improvement of this utility model is that: the pressing component includes a pressing cylinder and a pressing mounting base, and the pushing component includes a pushing cylinder and a pushing mounting base; the pushing mounting base is fastened to the top / bottom plate of the frame, the pushing cylinder is mounted on the pushing mounting base, and its output end extends horizontally and is fixedly connected to the pressing mounting base.

[0013] A further improvement of this utility model is that: the pressing cylinder is mounted on the pressing mounting base, and its output end is vertically downward and connected to the rotating shaft of the movable end; the pressing mounting base is fixedly connected to the sliding plate after passing through the top / bottom plate of the frame via a vertical plate.

[0014] The beneficial effects obtained by this utility model through the above technical solution are:

[0015] This invention provides a localized, fixed-length knurling device for profile surfaces. It features a simple structure and ingenious design, employing a stationary product component and a moving knurling shaft. The power output of the knurling tie rod mechanism is provided by a downward-pressing hydraulic cylinder, which, combined with a force-saving lever structure, applies pressure to the profile surface. A horizontal-push hydraulic cylinder then drives the knurling shaft, which, under pressure, presses against the profile surface, achieving localized, fixed-length knurling. This invention is highly practical, allowing for the adjustment of knurling length by equipping hydraulic cylinders of varying tonnages according to the designed knurling length, ensuring a clear and aesthetically pleasing knurled appearance and fulfilling specific functional requirements of the product component.

[0016] The knurled tie rod mechanism of this invention adopts a lever structure, which reduces energy consumption and saves energy. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a side view of the structure of the present invention after removing one side panel of the frame;

[0019] Figure 3 This is a schematic diagram showing the fit between the knurled shaft and the bending mandrel.

[0020] In the diagram, 1. Frame, 2. Fixed core block, 3. Connecting rod, 4. Fixed end rotating shaft, 5. Moving end rotating shaft, 6. Knurled shaft, 6-1. Knurled part, 6-2. Smooth shaft part, 7. Bending mandrel, 7-1. Recessed part, 7-2. Protruding part, 8. Sliding plate, 9. Ear seat, 10. Guide rail, 11. Slider, 12. Downward pressing cylinder, 13. Downward pressing mounting seat, 14. Flat pushing cylinder, 15. Flat pushing mounting seat, 16. Profile. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, 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 protection scope of this utility model.

[0022] A localized fixed-length knurling device for profile surfaces, see [link / reference] Figure 1 , Figure 2 The device includes a frame 1, a knurling linkage mechanism, and a power mechanism. The frame 1 is the main structure of the device, and both the knurling linkage mechanism and the power mechanism are fixedly mounted on the frame 1. The profile 16 to be knurled is detachably mounted on the frame 1. The knurling linkage mechanism performs the knurling operation under the drive of the power mechanism, which includes a pressing component that drives the knurling shaft 6 to press downward against the surface of the profile 16, and a pushing component that drives the knurling shaft 6 to move along the length of the profile 16 surface.

[0023] The frame 1 is a rectangular frame with openings at both the front and rear ends. A fixing core block 2 is provided at the rear end of the frame 1 to horizontally fix the profile 16 in the center of the frame 1. The fixing core block 2 and the profile 16 are detachably connected. The specific structure of the fixing core block 2 and its specific connection relationship with the profile 16 are not limited in detail here, including but not limited to mold insertion, mold snap-fit, expansion sleeve tightening connection, etc., as long as it can ensure that the profile 16 is stably and firmly fixed in the center of the frame 1.

[0024] Two sets of knurling linkage mechanisms are symmetrically arranged above and below the frame 1 to perform knurling operations on the upper and lower surfaces of the profile 16 to be knurled, respectively. Each knurling linkage mechanism includes a pair of opposing connecting rods 3. Between the two connecting rods 3, from back to front, are sequentially arranged a fixed-end rotating shaft 4, a knurling shaft 6, and a movable-end rotating shaft 5. The fixed-end rotating shaft 4, knurling shaft 6, and movable-end rotating shaft 5 are all hinged to the connecting rods 3, and each shaft end is equipped with a bearing to ensure flexible rotation. The axial surface of the knurling shaft 6 is lower than that of the fixed-end rotating shaft 4 and the movable-end rotating shaft 5, so that the axial surface of the knurling shaft 6 is close to the surface of the profile 16. The movable-end rotating shaft 5 is connected to the power output end of the pressing assembly. The knurling linkage mechanism utilizes the lever principle; when the movable-end rotating shaft 5 is pushed down by the pressing assembly, the connecting rod 3 rotates around the fixed-end rotating shaft 4, and the lower-positioned axial surface of the knurling shaft 6 applies downward pressure to the surface of the profile 16.

[0025] The fixed-end rotating shaft 4 is mounted on the lugs 9 on both sides of the sliding plate 8. The sliding plate 8 is arranged parallel to the top / bottom plate of the frame 1 and can slide horizontally along the top / bottom plate. Specifically, a long strip slider 11 is provided below the top plate of the frame 1, and a guide rail 10 matching the slider 11 is provided on the top of the sliding plate 8. Through the sliding cooperation between the slider 11 and the guide rail 10, the sliding plate 8 can move horizontally along the guide rail 10 under force.

[0026] like Figure 3 As shown, the knurled shaft 6 includes a knurled portion 6-1 and an optical shaft portion 6-2 located at both ends of the knurled portion 6-1. The shaft diameter of the knurled portion 6-1 is larger than the shaft diameter of the optical shaft portion 6-2. The knurling pattern of the knurled portion 6-1 can be modified and replaced according to design requirements.

[0027] The knurling linkage mechanism also includes an anti-bending mandrel 7 to prevent bending deformation of the knurling shaft 6 after long-term use. The anti-bending mandrel 7 is located on the side of the knurling shaft 6 away from the profile 16, and the roller profile of the anti-bending mandrel 7 matches the roller profile of the knurling shaft 6, such as... Figure 3 As shown, the bending mandrel 7 includes a recessed portion 7-1 that mates with the knurled portion 6-1 and a protruding portion 7-2 that mates with the optical axis portion 6-2, and the axis of the bending mandrel 7 coincides with the axis of the knurled shaft 6. Through the mutual cooperation of the rollers, the knurled shaft 6 maintains a stable straightness under force, thereby ensuring that the knurling effect on the surface of the profile 16 remains stable.

[0028] The pressing assembly includes a pressing cylinder 12 and a pressing mounting base 13, while the pushing assembly includes a pushing cylinder 14 and a pushing mounting base 15. The pushing mounting base 15 is fastened to the top / bottom plate of the frame 1. The pushing cylinder 14 is mounted on the pushing mounting base 15, with its output end extending horizontally and fixedly connected to the pressing mounting base 13. The pressing cylinder 12 is mounted on the pressing mounting base 13, with its output end pointing vertically downward and connected to the rotating shaft 5 of the movable end, transmitting the pressing power to the knurling mechanism. Each of the top / bottom plates of the frame 1 has an opening slot. The pressing mounting base 13 is fixedly connected to the sliding plate 8 after passing through the opening slot via a vertical plate. When the pushing cylinder 14 extends, it pushes the pressing mounting base 13 to slide horizontally, thereby driving the knurling mechanism to move horizontally through the sliding plate 8. The knurling shaft 6 performs knurling operations on the surface of the profile 16.

[0029] The working process of this utility model is as follows:

[0030] One end of the profile to be knurled is stably connected to the fixed core block. The pressure cylinder outputs pressure, causing the knurling linkage mechanism to rotate around the fixed end rotation axis at a certain angle, driving the knurling shaft to press against the profile surface. Then, the push cylinder provides power, driving the pressing component and the knurling linkage mechanism to be pushed out horizontally, and the knurling shaft knurls along the profile surface.

[0031] By setting the stroke of the horizontal thrust cylinder, fixed-length local knurling can be performed at different positions along the length of the profile surface.

[0032] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A device for localized fixed-length knurling on the surface of a profile, characterized in that: The system includes a frame (1), a knurling linkage mechanism, and a power mechanism. The frame (1) is a rectangular frame with openings at both ends. A fixing core block (2) is provided at the rear end of the frame (1) to fix the profile (16) horizontally in the center of the frame (1). The knurling linkage mechanism consists of two sets, symmetrically arranged above and below the profile (16), which respectively perform knurling operations on the upper and lower surfaces of the profile (16) to be knurled. The knurling linkage mechanism includes a knurling shaft (6) that is close to the surface of the profile (16) when not in operation and presses against the surface of the profile (16) when in operation. The power mechanism includes a pressing component that drives the knurling shaft (6) to press down against the surface of the profile (16) and a pushing component that drives the knurling shaft (6) to move along the length direction of the surface of the profile (16).

2. The profile surface local fixed-length knurling device according to claim 1, characterized in that: The knurled linkage mechanism includes a pair of connecting rods (3) arranged opposite to each other. The fixed end rotating shaft (4), the knurled shaft (6) and the movable end rotating shaft (5) are connected sequentially from back to front between the two connecting rods (3). The axial surface of the knurled shaft (6) is lower than the axial surface of the fixed end rotating shaft (4) and the movable end rotating shaft (5). The shaft end of the fixed end rotating shaft (4) is fixedly mounted on a sliding plate (8) that can move horizontally along the top / bottom plate of the frame (1). The movable end rotating shaft (5) is connected to the power output end of the pressing assembly.

3. The profile surface local fixed-length knurling device according to claim 2, characterized in that: The sliding plate (8) is set inside the frame (1), and the sliding plate (8) and its corresponding top plate or bottom plate are horizontally slidably connected through the cooperation of the guide rail (10) and the slider (11).

4. The profile surface local fixed-length knurling device according to claim 3, characterized in that: The knurled linkage mechanism also includes a bending mandrel (7) to prevent the knurled shaft (6) from bending.

5. The profile surface local fixed-length knurling device according to claim 4, characterized in that: The bending mandrel (7) is located on the side of the knurling shaft (6) away from the profile (16), and the roll shape of the bending mandrel (7) matches the roll shape of the knurling shaft (6).

6. The profile surface local fixed-length knurling device according to claim 1, characterized in that: The pressing assembly includes a pressing cylinder (12) and a pressing mounting base (13), and the pushing assembly includes a pushing cylinder (14) and a pushing mounting base (15); the pushing mounting base (15) is fastened to the top / bottom plate of the frame (1), and the pushing cylinder (14) is mounted on the pushing mounting base (15), with its output end extending horizontally and fixedly connected to the pressing mounting base (13).

7. The profile surface local fixed-length knurling device according to claim 6, characterized in that: The pressing cylinder (12) is installed on the pressing mounting base (13), and its output end is vertically downward and connected to the rotating shaft (5) of the movable end; the pressing mounting base (13) is fixedly connected to the sliding plate (8) after passing through the top / bottom plate of the frame (1) through a vertical plate.

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