Cylindrical milling cutter capable of quickly replacing milling cutter edge

Abstract

The utility model discloses a cylindrical milling cutter capable of quickly replacing milling cutter edges, and relates to the technical field of milling cutters. The cutter comprises a cutter bar and a blade, one end of the cutter bar is provided with an insertion groove, one side of the blade is provided with an insertion block, the cutter bar is internally provided with an installation cavity, the installation cavity is internally provided with a movable rod, the top end of the movable rod is fixedly provided with a pressed block, and the bottom end of the movable rod is fixedly provided with a limiting block. A worker rotates a threaded ring, the threaded ring moves towards one side after rotating and then drives an ejector rod to move, the ejector rod moves to drive an extrusion block to move, a pressed block is not extruded after the extrusion block moves, and after the pressed block is not extruded, under the reset effect of a spring, a connecting plate drives a movable rod to move upwards, and then a limiting block is separated from a limiting groove; and therefore, the inserting blocks can be separated from the inserting grooves, the blade dismounting work is completed, and operation is more convenient and safer.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a cylindrical milling cutter with a milling cutter blade capable of being quickly replaced. Background Art

[0002] A milling cutter is a rotating tool with one or more teeth used for milling. When working, each tooth cuts off the workpiece's excess in sequence and intermittently. Milling cutters are mainly used to process planes, steps, grooves, formed surfaces and cut off workpieces on milling machines.

[0003] The prior art discloses a carbide circular coated milling cutter with application number CN202023028927.6, which includes a connecting rod, a connecting surface, a connecting shank, a shock-absorbing block, a thread, a fixing hole, a milling cutter base, a through hole, a wear-resistant layer, a composite coating, a chip guide groove, a blade, a chip removal groove and a side blade. By setting a carbide material, the milling cutter can easily cut hard materials, meet the processing requirements of carbide, improve the working efficiency of the milling cutter, and also bring convenience to the user. The blade is set in a dispersed manner to avoid stress concentration, ensure the service life of the milling cutter, and improve the efficiency of the device. By setting a wear-resistant layer and a composite coating, the milling cutter becomes more wear-resistant and practical. At the same time, the setting of the circular milling cutter can achieve a self-lubricating effect, extend the lubrication and friction reduction time, reduce adhesive wear, and increase the life of the milling cutter. At the same time, the composite coating can integrate the advantages of multiple coating materials, significantly improve the comprehensive performance of the coated tool, and meet the needs of the application environment.

[0004] However, the milling cutter base of the device is connected to the connecting tool handle through a thread. During the rotation of the milling cutter base, the milling cutter base and the connecting tool handle will become tighter and tighter, and even cause thread slippage. At the same time, if the milling cutter base and the connecting tool handle are too tight, disassembly will be very time-consuming and labor-intensive. When the milling cutter base is severely worn and needs to be replaced, the milling cutter base needs to be held by hand and force is applied to rotate it, which can easily cause injuries to the staff. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a cylindrical milling cutter with a quickly replaceable milling cutter blade, so as to solve the technical problems in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cylindrical milling cutter with a quickly replaceable milling cutter blade, comprising a tool rod and a blade, one end of the tool rod being provided with a plug-in slot, one side of the blade being provided with a plug-in block, an installation cavity being provided inside the tool rod, and a movable rod being provided inside the installation cavity, a pressure block being fixed on the top end of the movable rod, a limiting block being fixed on the bottom end of the movable rod, connecting plates being fixed on both sides of the movable rod, and a spring being provided on the bottom of the connecting plate, a limiting groove being provided on the outer surface of the plug-in block, a fixing ring and a threaded ring being provided on the outer surface of the tool rod, a push rod being passed through the outer surface of the fixing ring, and an extrusion block being fixed on one end of the push rod, a sliding groove being provided on one side of the threaded ring, and a sliding ball being fixed on the other end of the movable rod, and the sliding ball slidingly cooperates with the sliding groove.

[0007] Furthermore, the threaded ring is threadedly connected to the guide rod, and a plurality of rotating rods are fixed to the outer surface of the threaded ring.

[0008] By adopting the above technical solution, the rotating rod makes it easier to exert force when the threaded ring rotates, making it more convenient to use.

[0009] Furthermore, the pressure blocks and the extrusion blocks are provided in multiple groups, and the top side of the pressure block and the side of the extrusion block are both sloped.

[0010] By adopting the above technical solution, the sloped design can guide the force, that is, when the extrusion block applies force to the pressure block laterally, the pressure block will be displaced longitudinally.

[0011] Furthermore, the plug-in block and the plug-in slot are both rectangular, and the plug-in block is adapted to the plug-in slot.

[0012] By adopting the above technical solution, the rectangular design enables the rotation of the knife rod to generate a large torque on the plug-in block, thereby driving the blade to rotate and reducing the force strength of the limit block.

[0013] Furthermore, the push rod is slidably connected to the fixing ring.

[0014] By adopting the above technical solution, the push rod can be driven to move during the movement of the threaded ring, and under the action of the fixing ring, the movement of the push rod is made more stable.

[0015] Furthermore, the springs are provided in several groups, and the springs in the several groups are all made of manganese steel.

[0016] By adopting the above technical solution, the manganese steel material has stronger compression resistance and elasticity, which makes the spring have a longer service life.

[0017] Furthermore, the limiting grooves and limiting blocks are each provided with four groups, and the four groups of limiting blocks are adapted to the limiting grooves.

[0018] By adopting the above technical solution, the four groups of limit blocks are synchronously snapped into the limit grooves, making the plug-in block more stable after being plugged in.

[0019] Furthermore, the outer surface of the blade is provided with a tungsten-titanium alloy coating.

[0020] By adopting the above technical solution, the tungsten-titanium alloy coating can increase the hardness and wear resistance of the blade, making the blade stronger and more durable and extending its service life.

[0021] Furthermore, a sliding groove (11) is provided on one side of the threaded ring (3), and a sliding ball (10) is fixed to the other end of the movable rod (14), and the sliding ball (10) is slidably engaged with the sliding groove (11).

[0022] By adopting the above technical solution, the sliding ball can slide in the sliding groove when the threaded ring rotates.

[0023] Furthermore, a shaft joint (19) is fixed to the other end of the knife rod (1).

[0024] By adopting the above technical solution and setting the shaft joint, the cutter rod can be stably connected to the external transmission mechanism.

[0025] When the blade is to be installed, the staff first inserts the plug-in block into the plug-in slot and then rotates the threaded ring in the opposite direction. The threaded ring moves toward the blade, so that the push rod pushes the extrusion block to move, and the extrusion block can squeeze the pressure block, so that the pressure block drives the movable rod to move, causing the limit block to be inserted into the limit slot, completing the installation of the blade. When the cutter head is replaced, the staff only needs to rotate the threaded ring to realize the replacement process. The replacement process is relatively simple and the installation is more firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the tool bar of the utility model;

[0028] Figure 3 This is a schematic diagram of the tool bar structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the blade structure of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the threaded ring of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the pressure block of the utility model;

[0032] Figure 7 For this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0033] In the figure: 1. Cutter bar; 2. Fixed ring; 3. Threaded ring; 4. Blade; 5. Connecting block; 6. Limiting groove; 7. Connecting groove; 8. Push rod; 9. Extrusion block; 10. Sliding ball; 11. Sliding groove; 12. Rotating rod; 13. Mounting cavity; 14. Movable rod; 15. Limiting block; 16. Spring; 17. Connecting plate; 18. Pressure block; 19. Shaft joint. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] The following describes an embodiment of the present invention based on its overall structure.

[0036] Example 1: A cylindrical milling cutter with a rapidly replaceable milling cutter blade, such as Figure 1-Figure 7As shown, it includes a knife bar 1 and a blade 4, one end of the knife bar 1 is provided with a plug-in slot 7, one side of the blade 4 is provided with a plug-in block 5, the interior of the knife bar 1 is provided with a mounting cavity 13, the interior of the mounting cavity 13 is provided with a movable rod 14, the top of the movable rod 14 is fixed with a pressure block 18, the bottom end of the movable rod 14 is fixed with a limiting block 15, both sides of the movable rod 14 are fixed with connecting plates 17, and the bottom of the connecting plate 17 is provided with a spring 16, the outer surface of the plug-in block 5 is provided with a limiting groove 6, the outer surface of the knife bar 1 is provided with a fixing ring 2 and a threaded ring 3, the threaded ring 3 is threadedly connected to the guide rod, and the outer surface of the threaded ring 3 is fixed with a plurality of rotating rods 12, the rotating rod 12 makes the thread The ring 3 is easy to apply force when it rotates, and is more convenient to use. The outer surface of the fixed ring 2 is penetrated by a push rod 8, and one end of the push rod 8 is fixed with an extrusion block 9. The push rod 8 is slidably connected to the fixed ring 2, and can drive the push rod 8 to move during the movement of the threaded ring 3. Under the action of the fixed ring 2, the movement of the push rod 8 is more stable. A sliding groove 11 is provided on one side of the threaded ring 3, and a sliding ball 10 is fixed on the other end of the movable rod 14, and the sliding ball 10 is slidably matched with the sliding groove 11. When the threaded ring 3 rotates, the sliding ball 10 can slide in the sliding groove 11. The other end of the knife rod (1) is fixed with a shaft joint 19. Through the setting of the shaft joint 19, the knife rod 1 can be stably connected to the external transmission mechanism.

[0037] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 In the above embodiment, the pressure block 18 and the extrusion block 9 are both provided in multiple groups, and the top side of the pressure block 18 and the side of the extrusion block 9 are both sloped. The sloped design can guide the force, that is, when the extrusion block 9 applies force to the pressure block 18 laterally, the pressure block 18 will displace longitudinally.

[0038] See Figure 2-Figure 4 In the above embodiment, the plug-in block 5 and the plug-in slot 7 are both rectangular, and the plug-in block 5 is adapted to the plug-in slot 7. The rectangular design enables the rotation of the knife rod 1 to generate a large torque on the plug-in block 5, thereby driving the blade 4 to rotate, reducing the force strength of the limit block 15.

[0039] See Figure 2 、 Figure 6 and Figure 7 In the above embodiment, the springs 16 are provided in several groups, and the several groups of springs 16 are all made of manganese steel material. The manganese steel material has strong pressure resistance and elasticity, which makes the springs 16 have a longer service life.

[0040] See Figure 2-Figure 4In the above embodiment, there are four groups of limit slots 6 and limit blocks 15, and the four groups of limit blocks 15 are adapted to the limit slots 6. The four groups of limit blocks 15 are synchronously inserted into the limit slots 6, making the plug-in block 5 more stable after insertion.

[0041] Example 2: In order to improve the service life and wear resistance of the blade, Example 2 is improved on the basis of Example 1. Figure 1 、 Figure 2 and Figure 4 The outer surface of the blade 4 is provided with a tungsten-titanium alloy coating, which can increase the hardness and wear resistance of the blade 4, making the blade 4 stronger and more durable and extending its service life.

[0042] When the blade 4 needs to be installed, the staff first inserts the plug block 5 into the plug groove 7, and then rotates the threaded ring 3 in the opposite direction. The threaded ring 3 moves toward the blade 4, so that the top rod 8 pushes the extrusion block 9 to move, and the extrusion block 9 moves to squeeze the pressure block 18, so that the pressure block 18 drives the movable rod 14 to move, causing the limit block 15 to be inserted into the limit groove 6, completing the installation of the blade 4.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A cylindrical milling cutter with a quickly replaceable milling cutter blade, comprising a cutter bar (1) and a blade (4), characterized in that: One end of the knife rod (1) is provided with a plug-in slot (7), one side of the blade (4) is provided with a plug-in block (5), the interior of the knife rod (1) is provided with a mounting cavity (13), the interior of the mounting cavity (13) is provided with a movable rod (14), the top end of the movable rod (14) is fixed with a pressure block (18), the bottom end of the movable rod (14) is fixed with a limit block (15), both sides of the movable rod (14) are fixed with connecting plates (17), and the bottom of the connecting plate (17) is provided with a spring (16), the outer surface of the plug-in block (5) is provided with a limit slot (6), the outer surface of the knife rod (1) is provided with a fixing ring (2) and a threaded ring (3), the outer surface of the fixing ring (2) is penetrated by a push rod (8), and one end of the push rod (8) is fixed with an extrusion block (9).

2. The cylindrical milling cutter with a quickly replaceable milling blade according to claim 1, characterized in that: The threaded ring (3) is threadably connected to the guide rod, and a plurality of groups of rotating rods (12) are fixed to the outer surface of the threaded ring (3).

3. The cylindrical milling cutter with a quickly replaceable milling blade according to claim 1, characterized in that: The pressure blocks (18) and the extrusion blocks (9) are provided in multiple groups, and the top side of the pressure blocks (18) and the side of the extrusion blocks (9) are both sloped.

4. The cylindrical milling cutter with a quickly replaceable milling blade according to claim 1, characterized in that: The plug-in block (5) and the plug-in slot (7) are both rectangular, and the plug-in block (5) is adapted to the plug-in slot (7).

5. The cylindrical milling cutter with a quickly replaceable milling cutter blade according to claim 1, characterized in that: The push rod (8) is slidably connected to the fixing ring (2).

6. The cylindrical milling cutter with a quickly replaceable milling blade according to claim 1, characterized in that: The springs (16) are provided in a plurality of groups, and the plurality of groups of springs (16) are all made of manganese steel.

7. The cylindrical milling cutter with a quickly replaceable milling blade according to claim 1, characterized in that: The limiting grooves (6) and the limiting blocks (15) are each provided in four groups, and the four groups of limiting blocks (15) are adapted to the limiting grooves (6).

8. The cylindrical milling cutter with a quickly replaceable milling blade according to claim 1, characterized in that: The outer surface of the blade (4) is provided with a tungsten-titanium alloy coating.

9. The cylindrical milling cutter with a quickly replaceable milling blade according to claim 1, characterized in that: A sliding groove (11) is provided on one side of the threaded ring (3), and a sliding ball (10) is fixed to the other end of the movable rod (14), and the sliding ball (10) is slidably engaged with the sliding groove (11).

10. The cylindrical milling cutter with a quickly replaceable milling blade according to claim 1, characterized in that: A shaft joint (19) is fixed to the other end of the knife rod (1).

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