Milling and rolling composite machining tools

Abstract

The present invention provides a milling and rolling composite machining tool, comprising a disc milling cutter body, the end of the disc milling cutter body comprising a cutting area and a central non-cutting area, the cutting area being provided with a milling blade, the non-cutting area being provided with a rolling mechanism, the rolling mechanism being embedded in the disc milling cutter body; the rolling mechanism comprising a roller and a sliding arm, the sliding arm being provided at both ends of the roller, and the roller and the sliding arm being rotatably engaged; the roller extending outside the disc milling cutter body, the sliding arm being embedded in the disc milling cutter body; the sliding arm being slidably engaged with the disc milling cutter body, the sliding arm sliding in a direction perpendicular to the disc milling cutter body. By providing the rolling mechanism in the central non-cutting area of ​​the disc milling cutter body, the present invention facilitates rolling finishing and surface strengthening and modification of the machined surface during normal cutting, helps avoid surface tensile stress generated by grinding, helps strengthen the microscopic surface, helps reduce labor, and thus helps improve work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, in particular to a milling and rolling composite processing tool. Background Art

[0002] Surface quality is a crucial aspect of machining quality. Milling and turning processes generally only meet the requirements of routine assembly and use. Products requiring higher precision and surface quality often require finishing processes such as polishing, lapping, and grinding. Lapping and polishing are time-consuming and labor-intensive, with high labor costs and a high degree of reliance on operator skill. Grinding often introduces residual tensile stresses in the machined surface, significantly reducing the fatigue performance of the product.

[0003] Therefore, many rolling finishing processes have emerged in recent years, such as turning rolling, milling rolling, etc. However, these processes are independent of the cutting process and require additional processing equipment, which has a certain impact on the overall product development cycle.

[0004] The existing Chinese patent publication number CN113199281A discloses a three-tool interchangeable fixture for ultrasonic milling, impacting, and rolling, comprising a milling machine spindle positioning mechanism, a fixture adapter housing, a tool change drive wheel, a tool mounting plate, a clutch, a clutch conversion actuator, a Morse taper shank, and three ultrasonic tools. The upper end of the fixture adapter housing is fixedly connected to the milling machine spindle via the milling machine spindle positioning mechanism; the tool change drive wheel is located at the lower end of the fixture adapter housing; and the tool mounting plate is located on the tool change drive wheel. The three ultrasonic tools are evenly distributed on the tool mounting plate and all have a 30° inclination angle toward the center of the tool mounting plate. The ultrasonic milling tool can rotate, while the ultrasonic impact and rolling tools are immovable; the Morse taper shank is fixedly connected to the milling machine spindle; the clutch conversion actuator is connected to the Morse taper shank; the clutch is arranged between the clutch conversion actuator and the ultrasonic milling tool, the upper half of the clutch is arranged on the clutch conversion actuator, and the lower half is arranged on the ultrasonic milling tool; the tool changing drive wheel is used to drive the clutch conversion actuator to operate.

[0005] The inventors believe that the existing technology has a long processing cycle and high cost, and it is necessary to provide a milling and rolling composite processing tool that combines quality, efficiency and surface modification. Summary of the Invention

[0006] In view of the defects in the prior art, the purpose of the present invention is to provide a milling and rolling composite machining tool.

[0007] According to the present invention, a milling and rolling composite machining tool is provided, which includes a disc milling cutter body, the end of the disc milling cutter body includes a cutting area and a central non-cutting area, the cutting area is provided with a milling blade, and the non-cutting area is provided with a rolling mechanism, and the rolling mechanism is embedded in the disc milling cutter body; the rolling mechanism includes a roller and a sliding support arm, the sliding support arm is provided at both ends of the roller, and the roller is rotatably matched with the sliding support arm; the roller extends outside the disc milling cutter body, and the sliding support arm is embedded in the disc milling cutter body; the sliding support arm is slidably matched with the disc milling cutter body, and the sliding support arm slides in a direction perpendicular to the disc milling cutter body.

[0008] Preferably, both ends of the roller are rotatably engaged with the sliding arm via needle bearings.

[0009] Preferably, the side of the sliding arm close to the roller is the second end of the sliding arm, and the needle bearing is embedded in the second end of the sliding arm; the side of the sliding arm away from the roller is the first end of the sliding arm, and the first end of the sliding arm is embedded in the disc milling cutter body; the sliding arm located between the first end of the sliding arm and the second end of the sliding arm is the middle part of the sliding arm, the cross-sectional size of the middle part of the sliding arm is larger than the cross-sectional size of the first end of the sliding arm, and the cross-sectional size of the middle part of the sliding arm is larger than the cross-sectional size of the second end of the sliding arm.

[0010] Preferably, the disc milling cutter body is provided with an opening matching the middle portion of the sliding arm, and the opening cooperates with the middle portion of the sliding arm to form a sliding pair.

[0011] Preferably, the sliding pair inner cavity includes a hydraulic cavity, the interior of the hydraulic cavity contains hydraulic oil, and the internal pressure of the hydraulic cavity is adjusted by a threaded pin.

[0012] Preferably, a sealing groove is provided on the peripheral side of the middle portion of the sliding arm, and a sealing ring is sleeved in the sealing groove.

[0013] Preferably, a compression spring is sleeved on the first end portion of the sliding arm.

[0014] Preferably, a limit block is provided on the outside of the rolling mechanism, the limit block is tightly connected to the disc milling cutter body, the limit block is tightly fitted with the second end of the sliding arm, and the limit block is tightly fitted with the middle part of the sliding arm.

[0015] Preferably, the limiting block comprises a gauge block for adjusting the height difference between the roller and the milling blade.

[0016] Preferably, the roller comprises wear-resistant bearing steel that has been surface-hardened and ground and polished.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a rolling mechanism in the non-cutting area at the center of the disc milling cutter body, which helps to perform rolling finishing and surface strengthening and modification of the processed surface during normal cutting, helps to avoid surface tensile stress generated by grinding, helps to strengthen the microscopic surface, helps to reduce labor, and thus helps to improve work efficiency.

[0019] 2. The present invention designs the limit block into a gauge block form, which helps to adjust the height difference between the rolling mechanism and the milling blade, thereby helping to control different positive pressures and rolling amounts during rolling to meet different cutting materials and surface quality requirements, thereby helping to improve the scope of application.

[0020] 3. The present invention forms a sliding pair by cooperating the sliding arm 4 with the disc milling cutter body 1. The inner cavity of the sliding pair is set as a hydraulic cavity. The internal pressure of the hydraulic cavity is adjusted by rotation, which helps to adjust different rolling pressures. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 This is a cross-sectional view of a milling and rolling composite machining tool mainly embodied in the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the milling and rolling composite machining tool mainly embodied in the present invention;

[0024] Figure 3 This is an exploded view of the rolling mechanism mainly embodied in the present invention.

[0025] As shown in the figure:

[0026] Disc milling cutter body 1 Roller 2 Needle roller bearing 3

[0027] Sliding arm 4 Sliding arm first end 41 Sliding arm middle 42

[0028] Sliding arm second end 43 Sealing ring 5 Compression spring 6

[0029] Threaded pin 7 Limit block 8 Countersunk screw 9

[0030] Hydraulic chamber 10 DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0032] like Figure 1 and Figure 2 As shown, a milling and rolling composite machining tool provided according to the present invention includes a disc milling cutter body 1, the end of the disc milling cutter body 1 includes a cutting area and a central non-cutting area, the cutting area is provided with a milling blade, and the non-cutting area is provided with a rolling mechanism, and the rolling mechanism is embedded in the disc milling cutter body 1; the rolling mechanism includes a roller 2 and a sliding arm 4, and the sliding arm 4 is provided at both ends of the roller 2, and the roller 2 rotates in cooperation with the sliding arm 4; the roller 2 extends to the outside of the disc milling cutter body 1, and the sliding arm 4 is embedded in the disc milling cutter body 1; the sliding arm 4 slides in cooperation with the disc milling cutter body 1, and the sliding arm 4 slides in a direction perpendicular to the disc milling cutter body 1.

[0033] During use, the present application combines quality, efficiency and surface modification. During the normal cutting process of the milling blade on the disc milling cutter body 1, the rolling mechanism can perform rolling finishing and surface strengthening and modification of the processed surface. With the cooperation of the sliding arm 4, the roller 2 can adjust the rolling parameters according to different cutting materials and surface quality requirements to meet the needs of different cutting conditions. The present application can not only replace the complicated work of manual polishing and grinding, but also avoid the surface tensile stress generated by grinding, form compressive stress, and strengthen the microscopic surface.

[0034] Both ends of the roller 2 rotate with the sliding arm 4 via needle bearings 3. Two needle bearings 3 are mounted on each end of the roller 2, which is integrally mounted on the sliding arm 4. The roller 2 can rotate freely around the needle bearings 3. One end of the roller 2 is positioned near the center of the non-cutting area of ​​the disc milling cutter body 1, and the other end is positioned near the cutting area. During the normal cutting process of the milling blade, the roller 2 can perform rolling finishing and surface strengthening and modification on the machined surface. The material of the roller 2 is generally selected from wear-resistant bearing steel that has been surface-hardened and ground and polished to ensure a high surface quality.

[0035] like Figure 3As shown, the side of the sliding arm 4 closest to the roller 2 is the sliding arm second end 43, within which the needle roller bearing 3 is embedded. The side of the sliding arm 4 away from the roller 2 is the sliding arm first end 41, which is embedded within the disc milling cutter body 1. The portion of the sliding arm 4 between the first end 41 and the second end 43 is the sliding arm middle portion 42. The cross-sectional dimensions of the sliding arm middle portion 42 are larger than those of the first end 41, and the cross-sectional dimensions of the sliding arm middle portion 42 are larger than those of the second end 43.

[0036] The disc milling cutter body 1 is provided with an opening that matches the middle portion 42 of the sliding arm. The opening and the middle portion 42 of the sliding arm cooperate to form a sliding pair, allowing the sliding arm 4 to slide up and down along the opening. The distance between the roller 2 and the workpiece can be adjusted by the sliding arm 4.

[0037] The sliding pair's inner cavity includes a hydraulic chamber 10, which contains hydraulic oil. The pressure inside the hydraulic chamber 10 is adjusted by a threaded pin 7. The hydraulic chamber 10 is filled with hydraulic oil, and the pressure inside the hydraulic chamber 10 is adjusted by rotating the threaded pin 7 to achieve different rolling pressure adjustment requirements.

[0038] A sealing groove is provided on the periphery of the middle portion 42 of the sliding arm, and a sealing ring 5 is sleeved in the sealing groove for sealing.

[0039] A compression spring 6 is sleeved on the first end portion 41 of the sliding arm to ensure that the rolling mechanism can rebound instantly.

[0040] A limit block 8 is provided on the outside of the rolling mechanism. The limit block 8 is fastened to the disc milling cutter body 1 by a countersunk screw 9. The limit block 8 is tightly fitted with the second end portion 43 of the sliding arm, and the limit block 8 is tightly fitted with the middle portion 42 of the sliding arm. Preferably, three limit blocks 8 are designed at the lower end of the rolling mechanism. The limit block 8 near the center of the non-cutting area of ​​the disc milling cutter body 1 is a large arc-shaped limit block, and the limit block 8 near the cutting area of ​​the disc milling cutter body 1 is two smaller limit blocks. This allows the limit blocks to be close to the second end portion 43 of the sliding arm without affecting the operation of the milling blade.

[0041] The stopper 8 is a gauge block used to adjust the height difference between the roller 2 and the milling insert. Available in various thicknesses, the stopper 8 adjusts the height difference ΔH between the rolling mechanism and the milling insert, controlling the positive pressure and rolling volume during rolling to meet varying cutting material and surface quality requirements.

[0042] This application uses the end tool of the disc milling cutter body 1 as Disc milling cutter, non-cutting area For example, the manufacturing and adjustment of milling and rolling composite machining tools are as follows:

[0043] 1. Roller 2 is made of C56E2 surface hardened (HRC60) bearing steel, size The surface is polished to a roughness of Ra0.16μm.

[0044] 2. The two ends of roller 2 are connected to the journal of needle roller bearing 3. Install one at each end The needle roller bearing 3 is integrally installed inside the second end portion 43 of the sliding arm 4.

[0045] 3. The middle portion 42 of each sliding arm 4 is provided with a sealing ring 5, and the first end portion 41 of each sliding arm is provided with a compression spring 6. The rolling mechanism is integrally installed inside the disc milling cutter body 1.

[0046] 4. Tighten the countersunk screw 9 to install the limit block 8 to limit the height movement of the rolling mechanism.

[0047] 5. Measure the height difference ΔH between the rolling mechanism and the milling insert using a tool setting instrument based on the material type and surface quality requirements. For 7A09 aluminum alloy, the surface quality requirement is Ra 0.4μm. Therefore, by installing stoppers 8 of varying thicknesses, the height difference ΔH between the rolling mechanism and the milling insert is controlled to 0.08mm.

[0048] 6. Fill the hydraulic chamber 10 with hydraulic oil and preset the internal pressure of the hydraulic chamber 10 through the threaded pin 7.

[0049] 7. Conduct a cutting test on the cutting material, and adjust the internal pressure of the hydraulic chamber 10 by adjusting the screw-in distance of the threaded pin 7, and then adjust the positive pressure between the roller 2 in the rolling mechanism and the processed surface to obtain the preset surface quality.

[0050] 8. After the pressure of the hydraulic chamber 10 is determined through the cutting test, the formal cutting task can be carried out.

[0051] During use, the present application combines quality, efficiency and surface modification. During the normal cutting process of the milling blade on the disc milling cutter body 1, the rolling mechanism can perform rolling finishing and surface strengthening and modification of the machined surface. The roller 2 adjusts the height difference between the rolling mechanism and the milling blade under the cooperation of the sliding arm 4 and the limit block 8, and adjusts the internal pressure of the hydraulic chamber 10 by adjusting the screw-in distance of the threaded pin 7, and then adjusts the positive pressure between the roller 2 in the rolling mechanism and the machined surface. The rolling parameters are adjusted according to different cutting materials and surface quality requirements to meet the needs of different cutting conditions. The present application can not only replace the complicated work of manual polishing and grinding, but also avoid the surface tensile stress generated by grinding, form compressive stress, and strengthen the microscopic surface.

[0052] How it works

[0053] During the normal cutting process of the milling blade on the disc milling cutter body 1, the rolling mechanism can perform rolling finishing and surface strengthening and modification of the machined surface. The roller 2 adjusts the height difference between the rolling mechanism and the milling blade under the cooperation of the sliding support arm 4 and the limit block 8. The internal pressure of the hydraulic chamber 10 is adjusted by adjusting the screw-in distance of the threaded pin 7, and then used to adjust the positive pressure between the roller 2 in the rolling mechanism and the machined surface. The rolling parameters are adjusted according to different cutting materials and surface quality requirements to meet the needs of different cutting conditions. The present application can not only replace the complicated work of manual polishing and grinding, but also avoid the surface tensile stress generated by grinding, form compressive stress, and strengthen the microscopic surface.

[0054] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this 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 cannot be understood as a limitation on this application.

[0055] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A milling and rolling composite machining tool, characterized in that: The disc milling cutter body (1) comprises a cutting area and a central non-cutting area at the end thereof, the cutting area being provided with a milling blade, the non-cutting area being provided with a rolling mechanism, and the rolling mechanism being embedded in the disc milling cutter body (1); The rolling mechanism comprises a roller (2) and a sliding arm (4), wherein the sliding arm (4) is provided at both ends of the roller (2), and the roller (2) and the sliding arm (4) are rotatably matched; The roller (2) extends outside the disc milling cutter body (1), and the sliding arm (4) is embedded in the disc milling cutter body (1); The sliding support arm (4) is in sliding cooperation with the disc milling cutter body (1), and the sliding support arm (4) slides in a direction perpendicular to the disc milling cutter body (1); Both ends of the roller (2) are rotatably engaged with the sliding support arm (4) via needle bearings (3); The side of the sliding arm (4) close to the roller (2) is the second end portion (43) of the sliding arm, and the needle bearing (3) is embedded in the second end portion (43) of the sliding arm; The side of the sliding arm (4) away from the roller (2) is the first end portion (41) of the sliding arm, and the first end portion (41) of the sliding arm is embedded in the disc milling cutter body (1); The sliding arm (4) is located between the first end portion (41) and the second end portion (43) of the sliding arm. The cross-sectional dimensions of the sliding arm middle portion (42) are larger than the cross-sectional dimensions of the first end portion (41) of the sliding arm. The cross-sectional dimensions of the sliding arm middle portion (42) are larger than the cross-sectional dimensions of the second end portion (43) of the sliding arm.

2. The milling and rolling composite machining tool according to claim 1, characterized in that: The disc milling cutter body (1) is provided with an opening that matches the middle portion (42) of the sliding arm, and the opening cooperates with the middle portion (42) of the sliding arm to form a sliding pair.

3. The milling and rolling composite machining tool according to claim 2, characterized in that: The inner cavity of the sliding pair includes a hydraulic cavity (10), the interior of the hydraulic cavity (10) includes hydraulic oil, and the internal pressure of the hydraulic cavity (10) is adjusted by a threaded pin (7).

4. The milling and rolling composite machining tool according to claim 1, characterized in that: A sealing groove is provided on the peripheral side of the middle portion (42) of the sliding support arm, and a sealing ring (5) is sleeved in the sealing groove.

5. The milling and rolling composite machining tool according to claim 1, characterized in that: A compression spring (6) is sleeved on the first end portion (41) of the sliding support arm.

6. The milling and rolling composite machining tool according to claim 1, characterized in that: A limit block (8) is provided on the outer side of the rolling mechanism, the limit block (8) is tightly connected to the disc milling cutter body (1), the limit block (8) is tightly fitted with the second end portion (43) of the sliding support arm, and the limit block (8) is tightly fitted with the middle portion (42) of the sliding support arm.

7. The milling and rolling composite machining tool according to claim 6, characterized in that: The limiting block (8) is in the form of a gauge block and is used to adjust the height difference between the roller (2) and the milling blade.

8. The milling and rolling composite machining tool according to claim 1, characterized in that: The roller (2) is made of wear-resistant bearing steel that has been surface-hardened and ground and polished.

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