Automatic centering mechanism of saw blade with anti-deviation structure

Abstract

The utility model discloses a saw blade automatic centering mechanism with anti -drifting structure belongs to saw blade production technical field, including expansion block and the support block of installing on expansion block, expansion block includes the core column of being able to separate, the core column is separated through expansion subassembly and adds pressure, and the central hole of saw blade is surrounded in the periphery of core column, the support block includes first gasket, install guiding assembly on first gasket, and guiding assembly guides the core column and separates radially, still install auxiliary assembly on first gasket, the core column extrudes saw blade central hole after separating radially under the action of guiding assembly. Through setting the core column of echelon shape and realizing the effect of placing saw blade steadily, simultaneously, for the saw blade of different specification central hole, can be set in the corresponding core column position, and the scope of application is wider.

Description

Technical Field

[0001] This utility model relates to the field of saw blade manufacturing technology, specifically to an automatic saw blade centering mechanism with an anti-offset structure. Background Technology

[0002] The production of circular saw blades begins with the laser cutting or precision stamping of high-quality alloy steel plates to form the base and center hole. Multiple heat treatments (quenching and tempering) then impart high hardness, toughness, and stress relief to the base. The next crucial step involves using a high-precision automatic centering system (such as a hydraulic expansion mandrel or tapered positioning fixture) to firmly fix the base to the spindle of a CNC grinding machine, ensuring that its rotation center is absolutely aligned with the machining center. This prevents any misalignment during grinding, resulting in a precision-ground, extremely flat end face, uniform outer diameter, and accurate tooth grooves. After the base machining is complete, a carbide or diamond cutting tip is precisely welded to the tooth holder using an automatic welding machine. Next, the cutting edge is sharpened to be sharp, and rigorous dynamic balancing is performed to eliminate vibrations during high-speed rotation. Finally, after spraying, laser marking, and multiple quality inspections, each saw blade ensures excellent cutting accuracy, balance, and durability.

[0003] The prior art discloses a clamping device for saw blade production, belonging to the technical field of saw blade processing devices. By setting a fixing frame and a positioning plate, a circular saw blade can be stably clamped on the saw blade clamping device. Specifically, a fixing screw is set on the fixing frame and a positioning pin is set on the positioning plate. The fixing screw and the positioning pin work together to fix the fixing holes and saw tooth grooves on the circular saw blade at fixed points, so that the circular saw blade can be stably fixed on the saw blade clamping device. At the same time, it effectively protects the circular saw blade from damage. The stable clamping also facilitates subsequent processing and effectively improves the processing efficiency of saw blade production. The structure of this utility model is simple and easy to operate.

[0004] The device described above only clamps and fixes the outer wall of the saw blade. When grinding the saw blade teeth, it is necessary to keep the saw blade rotating on the central axis of the central hole. Therefore, this device is not suitable for the saw tooth grinding process.

[0005] Based on this, this utility model designs an automatic saw blade centering mechanism with an anti-offset structure to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an automatic saw blade centering mechanism with an anti-offset structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution: An automatic centering mechanism for a saw blade with an anti-offset structure includes an expansion block and a support block mounted on the expansion block. The expansion block includes a separable core column, which is separated by pressure applied by an expansion assembly. The central hole of the saw blade is fitted around the core column. An auxiliary component is also mounted on the first pad. The support block includes a first pad, on which a guide assembly is mounted, the guide assembly guiding the core column to separate radially; After the core column is radially separated under the action of the guiding component, it squeezes the center hole of the saw blade.

[0008] Preferably, the expansion assembly includes a tie rod that penetrates the interior of the core column, and a rod cap is fixedly installed at the upper end of the tie rod, the rod cap being circular.

[0009] Preferably, the lower end of the pull rod is a threaded section, and the threaded section is detachably connected to the drive assembly that drives the pull rod to move.

[0010] Preferably, the guide assembly includes a conical shell with a core hole in the middle, the core rod passing through the core hole, and the inner wall of the core rod fitting against the inner wall of the conical shell.

[0011] Preferably, the auxiliary component includes a second gasket with a guide hole at its center, through which the conical shell passes, and the first gasket and the second gasket are detachably connected.

[0012] Preferably, the first gasket has a connecting hole, and the second gasket has a mounting hole. A bolt is inserted into the mounting hole, and the bolt is threaded into the connecting hole of the first gasket.

[0013] Preferably, the first gasket also has positioning holes.

[0014] Preferably, the radius of the core column gradually increases from top to bottom.

[0015] Compared with the prior art, the advantages of this utility model are as follows: 1. The automatic centering mechanism for saw blades with anti-offset structure of this utility model achieves the effect of centering and fixing the saw blades installed on it by setting a core column; 2. The automatic saw blade centering mechanism with anti-offset structure of this utility model achieves the effect of stable placement of saw blade by setting a stepped core column. At the same time, saw blades with different sizes of center holes can be fitted at the corresponding core column positions, making it more widely applicable. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the automatic saw blade centering mechanism with an anti-offset structure according to the present invention; Figure 2 This is a cross-sectional view of an automatic saw blade centering mechanism with an anti-offset structure according to the present invention. Figure 3 This is an exploded view of an automatic saw blade centering mechanism with an anti-offset structure according to the present invention. Figure 4 This is a schematic diagram of the usage structure of an automatic saw blade centering mechanism with an anti-offset structure according to the present invention; Figure 5 This is a schematic diagram showing the connection between the automatic centering mechanism for a saw blade with an anti-deviation structure and the hydraulic cylinder according to this utility model.

[0018] The labels in the diagram represent: 10. Expansion block; 11. Core column; 111. Storage platform; 12. Tie rod; 121. Threaded section; 122. Rod cap; 13. Hydraulic cylinder; 20. Support block; 21. First gasket; 211. Conical shell; 212. Core hole; 213. Positioning hole; 214. Connecting hole; 22. Second gasket; 221. Guide hole; 222. Mounting hole; 223. Bolt; 30. Machine tool; 32. Vertical pole; 33. Sliding frame; 34. Spring; 35. Pressure rod; 36. Handle; 37. Grinding machine. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] In the manufacturing process of circular saw blades, "automatic saw blade centering to prevent offset" refers to the use of high-precision clamping systems such as tapered mandrels and hydraulic expansion mandrels to automatically, quickly, and accurately position and fix the saw blade substrate on the rotation center of the machine tool before key processes such as welding, grinding, and sharpening, and to prevent any displacement during the entire processing. This is a prerequisite and core technology for ensuring that the saw blade ultimately achieves extremely high geometric accuracy (parallelism, roundness) and dynamic balance performance. The inventors discovered that existing saw blade clamps often use the method of clamping the side of the saw blade and grinding the saw teeth by rotating the grinding tool. However, the concentricity accuracy of the rotation of the grinding tool is more difficult to control than the rotation of the saw blade. If the center of the saw blade is clamped while the rotation of the saw blade is controlled, it will be beneficial to the grinding accuracy of the saw blade teeth.

[0021] In some embodiments, please refer to the accompanying drawings. Figure 1 An automatic saw blade centering mechanism with an anti-offset structure includes an expansion block 10 and a support block 20 mounted on the expansion block 10. The support block 20 is used to support the expansion block 10, and the expansion block 10 is used to clamp and fix the saw blade.

[0022] Specifically, such as Figure 1 , Figure 3 As shown, the main body of the expansion block 10 is the core column 11, which is a cylinder composed of three arc-shaped blocks with an angle of 120°. Each arc-shaped ring is magnetized and has magnetic properties. Therefore, the three arc-shaped rings attract each other, as shown in the figure. Figure 3 The internal cavity of the core post 11 is a cone that fits into the conical shell 211, which will be described in detail below. Furthermore, a pull rod 12 is vertically inserted into the cavity of the core post 11. The shape of the pull rod 12 is as follows... Figure 3 As shown, a horizontal rod cap 122 is fixedly installed at the upper end, and the lower end has threads on the outer wall, which is a threaded section 121; On the other hand, the support block 20 includes a first gasket 21 and a second gasket 22, the shape of which is as follows: Figure 3 As shown, the first gasket 21 is a short cylindrical disk. A through hole is formed at the center of the first gasket 21, and a conical shell 211 is fixedly installed inside the through hole. The conical shell 211 is conical, extending vertically, and has a hollow interior. Its upper opening is a core hole 212 for the pull rod 12 to pass through. The first gasket 21 has a connecting hole 214 for the bolt 223 to be installed, and a positioning hole 213 for the hydraulic cylinder 13 and other components to be installed at its lower end. The second gasket 22 is shaped as shown in the diagram. Figure 3As shown, it is also a short cylindrical shape, with multiple mounting holes 222 opened at its upper edge. The mounting holes 222 are stepped and their positions correspond to the connecting holes 214 on the first gasket 21 at its lower end. Bolts 223 pass through the mounting holes 222 and are installed in the connecting holes 214 of the first gasket 21, so that the first gasket 21 and the second gasket 22 are connected and fixed. At the same time, a guide hole 221 is opened in the middle of the second gasket 22 for the conical shell 211 to pass through. The guide hole 221 can guide the conical shell 211 to pass into the second gasket 22 and keep the positions of the first gasket 21 and the second gasket 22 corresponding. When using, such as Figure 2 As shown, first, the saw blade is placed around the core column 11, and then the pull rod 12 is pulled down. The rod cap 122 at the upper end of the pull rod 12 pushes the core column 11 downward. Since the inner wall of the core column 11 is in contact with the outer wall of the conical shell 211, when the core column 11 slides down on the inclined surface of the conical shell 211, it also moves a distance in the horizontal direction, i.e., in the circumferential direction. At this time, the parts of the core column 11 separate, and the gap between the outer wall of the core column 11 and the central hole of the saw blade narrows until they come into contact with each other and are depressurized. Therefore, the saw blade is fixed on the core column 11. Since the horizontal position of each part of the core column 11 is the same, the central axis of the central hole of the saw blade coincides with the central axis of the core column 11 at the same time as the saw blade is fixed.

[0023] The saw blade mounted on the core post 11 is centered and fixed by setting the core post 11.

[0024] In some embodiments, such as Figure 3 As shown in a preferred embodiment of the present invention, the diameter of the core column 11 increases in a stepped manner from top to bottom. There is a platform 111 between the core columns 11 of the device parts of two adjacent layers. The platform 111 is used to support the saw blade. When the saw blade is fitted around the core column 11, the platform 111 supports the saw blade at its upper end to keep it horizontal.

[0025] By setting a stepped core post 11, the saw blade can be placed stably. At the same time, saw blades with different sizes of center holes can be fitted into the corresponding core post 11 positions, making it more widely applicable.

[0026] In some embodiments, such as Figure 4 , Figure 5As shown, as a preferred embodiment of this utility model, this is an example of the device being installed on a machine tool 30. The machine tool 30 is a lifting-type grinding machine tool 30, with a base at the bottom. A vertical rod 32 is fixed to the upper end of the base. A sliding frame 33 is slidably mounted on the rod 32, with two pulleys rotatably mounted on the sliding frame 33. The pulleys roll on both sides of the rod 32. A spring 34 is sleeved around the rod 32, located between the base and the sliding frame 33. The lower end of the spring 34 is fixed to the base, and the upper end is fixed to the sliding frame 33. Furthermore, a [missing information - likely a component or component] is hinged to the sliding frame 33. A handle 36 is hinged to the pressure rod 35 and the upright rod 32. The handle 36 is hinged to the pressure rod 35. Therefore, pressing the handle 36 downward can drive the sliding frame 33 and the grinder 37 mounted on the sliding frame 33 to move downward. Below the grinder, the first pad 21 of the support block 20 is fixed to the base. The pull rod 12 extends downward through the base and is threadedly connected to the hydraulic rod at the output end of the hydraulic cylinder 13 fixed at the lower end of the base. The hydraulic cylinder 13 pulls the pull rod 12 downward, causing the core column 11 to expand outward and fix the circular saw blade placed around it. Then the grinder 37 moves downward to start grinding the saw blade.

[0027] Working principle: First, the saw blade is placed around the core column 11. Then, the pull rod 12 is pulled down. The rod cap 122 at the upper end of the pull rod 12 pushes the core column 11 downward. Since the inner wall of the core column 11 is in contact with the outer wall of the conical shell 211, when the core column 11 slides down on the inclined surface of the conical shell 211, it also moves a distance in the horizontal direction, i.e., in the circumferential direction. At this time, the parts of the core column 11 separate, and the gap between the outer wall of the core column 11 and the central hole of the saw blade narrows until they come into contact with each other and are depressurized. Therefore, the saw blade is fixed on the core column 11.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic saw blade centering mechanism with an anti-offset structure, comprising an expansion block (10) and a support block (20) mounted on the expansion block (10), characterized in that: The expansion block (10) includes a separable core column (11), which is separated by pressure applied by the expansion assembly, and the central hole of the saw blade is fitted around the core column (11). The support block (20) includes a first gasket (21), on which a guide assembly is installed. The guide assembly guides the core column (11) to separate radially. An auxiliary assembly is also installed on the first gasket (21). The core column (11) is radially separated under the action of the guide assembly and then squeezes the center hole of the saw blade.

2. The automatic saw blade centering mechanism with anti-offset structure according to claim 1, characterized in that, The expansion assembly includes a pull rod (12) that penetrates the interior of the core column (11), and a rod cap (122) is fixedly installed at the upper end of the pull rod (12), the rod cap (122) being circular.

3. The automatic saw blade centering mechanism with anti-offset structure according to claim 2, characterized in that, The lower end of the pull rod (12) is a threaded section (121), and the threaded section (121) is detachably connected to the drive assembly that drives the pull rod (12) to move.

4. The automatic saw blade centering mechanism with anti-offset structure according to claim 3, characterized in that, The guide assembly includes a conical shell (211), a core hole (212) is provided in the middle of the conical shell (211), a core post (11) passes through the core hole (212), and the inner wall of the core post (11) is in contact with the inner wall of the conical shell (211).

5. The automatic saw blade centering mechanism with anti-offset structure according to claim 4, characterized in that, The auxiliary component includes a second gasket (22), which has a guide hole (221) at its center. The conical shell (211) passes through the guide hole (221), and the first gasket (21) and the second gasket (22) are detachably connected.

6. The automatic saw blade centering mechanism with anti-offset structure according to claim 5, characterized in that, The first gasket (21) has a connecting hole (214), and the second gasket (22) has a mounting hole (222). A bolt (223) is inserted into the mounting hole (222), and the bolt (223) is threaded into the connecting hole (214) of the first gasket (21).

7. The automatic saw blade centering mechanism with anti-offset structure according to claim 6, characterized in that, The first gasket (21) also has a positioning hole (213).

8. The automatic saw blade centering mechanism with anti-offset structure according to claim 1 or 7, characterized in that, The radius of the core column (11) gradually increases from top to bottom.

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