Insert type circular saw blade

Abstract

The utility model relates to the technical field of circular saw blade production, in particular to a blade-embedded type circular saw blade. The sawtooth sleeve is sleeved at the tip end of the cutter block, meanwhile, the stability of the sawtooth sleeve and the cutter block is improved through connection of the countersunk head screws, due to the fact that only the sawtooth sleeve part is made of high-speed steel materials, the sawing performance is guaranteed, and the other parts are made of common tool steel, consumption of the high-speed steel materials of an original whole embedded type circular saw blade can be saved. Meanwhile, the heat treatment process is simplified, and power consumption is saved; the blade block and the saw blade body are connected in a clamping and bolt connection combined mode, when a bolt is screwed into a threaded hole, the inserting blocks at the two ends are extruded to move towards the two sides, the clamping blocks are inserted into the clamping grooves, and therefore the stability of the whole structure is improved. When the sawtooth sleeve is abraded, the sawtooth sleeve can be replaced, and when the position of the cutter block or the blade is damaged, the blade can be replaced.

Description

Technical Field

[0001] This application relates to the field of circular saw blade manufacturing technology, and in particular to an insert-type circular saw blade. Background Technology

[0002] Insert-type circular saw blades are widely used in industries such as metallurgy and machining. They are mainly used for sawing steel, non-ferrous metal billets, pipes, and structural steel. Traditional insert-type circular saw blades generally consist of a saw blade body and cutting blocks. The cutting blocks are continuously riveted to the outer edge of the saw blade body. By combining the two materials, a saw blade with a maximum diameter of 2000mm is manufactured to complete the sawing of large workpieces. The saw blade body of traditional circular saw blades is made of low-alloy tool steel, while the cutting blocks used to complete the cutting work are made of high-speed steel. However, high-speed steel is relatively expensive, and the extensive use of high-speed steel will lead to a high cost of circular saw blades, making it difficult to reduce production costs. Utility Model Content

[0003] This invention aims to change the structure of the saw teeth by using expensive high-speed steel only in the cutting area and ordinary steel in the non-working area, so that the high-speed steel saw teeth are intermittently distributed, which greatly saves the amount of high-speed steel material used. This ensures the sawing effect while reducing manufacturing costs. In addition, when the tips of individual saw teeth are damaged, only a small high-speed steel saw tooth sleeve can be replaced, which also greatly reduces the cost of saw blade use.

[0004] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0005] A type of insert-type circular saw blade includes a saw blade body and several blades. Each blade includes a blade block and a toothed sleeve. The outer circumference of the saw blade body is provided with insertion slots corresponding to the number of blades. The inner edges of the blade blocks are slidably connected to oppositely sliding insertion blocks. The insertion blocks are used to radially insert into the insertion slots. The toothed sleeves are fitted onto the tips of the blade blocks and are connected to the tips of the blade blocks with countersunk screws. Both ends of the insertion slots are provided with locking slots. The outer ends of the two insertion blocks are fixed with locking blocks. The inner surfaces of the two insertion blocks are arc-shaped. The middle of the blade blocks and the bottom of the insertion slots are respectively provided with corresponding threaded holes. When bolts are threaded into the threaded holes of the blade blocks and the saw blade body, the arc-shaped inner surfaces of the two insertion blocks abut against the bolts, and the two locking blocks protrude from both sides of the blades and are inserted into the locking slots. The toothed sleeves are made of high-speed steel, and the saw blade body, blade blocks, and insertion blocks are made of low-alloy tool steel.

[0006] Compared with the prior art, the advantages of this utility model, which adopts the above technical solution, are as follows:

[0007] This invention features a saw tooth sleeve fitted onto the tip of the blade, with countersunk screws used for connection to enhance the stability of both the saw tooth sleeve and the blade. Only the saw tooth sleeve is made of high-speed steel, which increases the hardness of the blade tip while saving on the high-speed steel consumption of the overall insert-type circular saw blade, simplifying the heat treatment process and saving electricity. Furthermore, this invention connects the blade and the saw blade body using a combination of snap-fit ​​and bolt connections. When the bolt is screwed into the threaded hole, the insertion blocks at both ends are pressed and moved to the sides, allowing the snap-fit ​​blocks to insert into the snap-fit ​​grooves, thus increasing the overall structural stability. Both the saw tooth sleeve and the blade can be quickly disassembled and assembled. When the saw tooth sleeve wears out, it can be replaced; when the blade or blade is damaged, the blade can be replaced.

[0008] As a preferred embodiment, a further technical solution of this utility model is:

[0009] The diameter of the threaded hole is greater than the total length of the two snap-fit ​​blocks. With this structure, when the inner arc surfaces of the two snap-fit ​​blocks abut against the bolt, the two snap-fit ​​blocks protrude to both ends and are inserted into the snap-fit ​​grooves.

[0010] Both ends of the inner edge of the blade block are provided with circumferential sliding grooves, and a sliding block is fixed circumferentially on the outer edge of the plug-in block, with the sliding block slidably disposed in the sliding groove. This structure allows the two plug-in blocks to slide circumferentially based on the inner edge of the blade.

[0011] The radial cross-section of the sliding groove and the sliding block is T-shaped. By setting the T-shaped sliding groove and the T-shaped sliding block, the stability of the plug block during sliding is increased.

[0012] The rear end of the serrated sleeve has a receiving cavity that matches the shape of the blade tip. The serrated sleeve is press-fitted to the blade tip through the receiving cavity. By setting the press-fit, the serrated sleeve is more securely fitted onto the blade tip through the receiving cavity.

[0013] A spring connects the two insertion blocks of the same blade. When the spring is in its natural state, the inner surfaces of the two insertion blocks are in contact. When the pressure from the bolt is released, the two insertion blocks will automatically slide inward and close together, making it easy to remove the blade. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0015] Figure 2 yes Figure 1 A partial sectional view of section A;

[0016] Figure 3 This is a perspective view of the blade structure according to an embodiment of this application;

[0017] Figure 4 This is a perspective view of the blade structure of an embodiment of this application;

[0018] Figure 5 This is a cross-sectional view of the blade structure according to an embodiment of this application;

[0019] Figure 6 This is a perspective view of the blade structure according to an embodiment of this application;

[0020] Figure 7 This is a radial cross-sectional view of the blade structure according to an embodiment of this application.

[0021] In the diagram: 1. Saw blade body; 11. Insertion groove; 111. Snap-fit ​​groove; 2. Blade; 21. Insertion block; 211. Snap-fit ​​block; 212. Spring; 213. Sliding block; 214. Curved surface; 22. Blade block; 23. Saw tooth sleeve; 24. Threaded hole; 25. Sliding groove; 231. Countersunk screw. Detailed Implementation

[0022] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0023] Reference Figure 1-7 This application discloses an insert-type circular saw blade, including a saw blade body 1 and a plurality of blades 2. Each blade 2 includes a blade block 22 and a toothed sleeve 23. Each blade block 22 has two teeth on its outer edge. The outer circumference of the saw blade body 1 is provided with insertion slots 11 at equal intervals corresponding to the number of blades 2. Insertion blocks 21 are slidably connected to both ends of the inner edge of the blade block 22. The two insertion blocks 21 are close to or far from each other. When the two insertion blocks 21 slide to the position of maximum spacing, the overall shape of the two insertion blocks 21 matches the shape of the insertion slots 11. Each insertion block 21 is used to radially insert into each insertion slot 11. The toothed sleeve 23 is fitted onto the tip of the tooth of the blade block 22. The rear end and front end of the toothed sleeve 23 are respectively engaged with the tip of the blade block 22. The head screw 231 is used for connection; both ends of the insertion slot 11 are provided with snap-fit ​​slots 111, and the outer ends of the two insertion blocks 21 are fixed with snap-fit ​​blocks 211. The snap-fit ​​blocks 211 and snap-fit ​​slots 111 are matched in shape. The corresponding inner surfaces of the two insertion blocks 21 are set as arcs. The middle of the blade block 22 and the bottom of the insertion slot 11 are respectively provided with corresponding threaded holes 24. The blade 2 and the saw blade body 1 are bolted together through the threaded holes 24. At this time, the arc-shaped sides of the two insertion blocks 21 abut against the bolt. By screwing the bolt into the threaded holes 24, the two insertion blocks 21 are pressed to slide to both ends, thereby causing the two snap-fit ​​blocks 211 to protrude from both sides of the blade block 22 and snap into the snap-fit ​​slots 111, thus fixing the blade block 22 and the saw blade body 1 together.

[0024] In this embodiment, the diameter of the threaded hole 24 is greater than the total length of the two locking blocks 211. Specifically, the diameter of the threaded hole 24 is equal to the length of the two locking blocks 211 plus the arc depth of the two arc surfaces 214. With the above structure, when the inner arc surfaces 214 of the two insertion blocks 21 abut against the bolt, the outer surfaces at both ends of the two insertion blocks 21 are flush with the outer surfaces at both ends of the blade block 22, and the two locking blocks 211 protrude from both ends of the blade block 22, so that the locking blocks 211 are inserted into the locking groove 111.

[0025] In this embodiment, both ends of the inner edge of the blade block 22 are provided with circumferential sliding grooves 25. The length of the sliding groove 25 is less than half the length of the inner edge of the blade block 22. A sliding block 213 is fixed circumferentially on the outer edge of the plug-in block 21, and the sliding block 213 is slidably disposed in the sliding groove 25. With the above structure, the two plug-in blocks 21 can slide circumferentially based on the inner edge of the blade block 22.

[0026] In this embodiment, the radial cross-sections of both the sliding groove 25 and the sliding block 213 are T-shaped. By setting the T-shaped sliding groove 25 and the T-shaped sliding block 213, the stability of the plug block 21 during sliding is increased.

[0027] In this embodiment, the saw tooth sleeve 23 is made of W6Mo5Cr4V2 high-speed steel, while the saw blade body 1, the blade 2, and the connector block 21 are made of 75Cr1 low-alloy tool steel. During use, the saw tooth sleeve 23 directly contacts the object being cut. The use of high-speed steel for only the saw tooth sleeve 23 ensures the cutting performance of the circular saw blade while saving on the cost of the circular saw blade.

[0028] In this embodiment, the rear end of the serrated sleeve 23 is provided with a receiving cavity that matches the shape of the serrated tip of the blade block 22. The serrated sleeve 23 on both sides and the rear side of the receiving cavity wraps around the serrated tip of the blade block 22, and the serrated sleeve 23 is press-fitted with the serrated tip of the blade block 22 through the receiving cavity, so that the serrated sleeve 23 is more securely fitted onto the serrated tip of the blade block 22 through the receiving cavity.

[0029] In this embodiment, two springs 212 connect the two insertion blocks 21 of the same blade 22. Specifically, spring 212 cavities are provided on the inner ends of both sides of the two insertion blocks 21. One end of the spring 212 is fixed in the spring 212 cavity of one insertion block 21, and the other end of the spring 212 is fixed in the spring 212 cavity of the other insertion block 21. When the spring 212 is in its natural state, the inner surfaces of the two insertion blocks 21 are in contact. When the pressure of the bolt is removed, the two insertion blocks 21 will automatically slide inward and fit together, facilitating the disassembly of the blade 2.

[0030] This invention features a saw blade with a toothed sleeve 23 structure. The toothed sleeve 23 is fitted onto the tip of the saw blade 22 to increase the hardness of the tip. Countersunk screws 231 are used to connect and increase the stability of the toothed sleeve 23 and the saw blade 22. The saw blade 22 and the saw blade body 1 are connected using a combination of snap-fit ​​and bolt connections. In use, the toothed sleeve 23 is first fitted onto the toothed tip of the saw blade 22 and secured with countersunk screws 231. Then, the insert blocks 21 on the inner edges of each saw blade 22 are moved to the center, and each saw blade... Insert the plug 21 of 22 into the plug groove 11, and then screw the bolt into the threaded hole 24 to fasten the blade 22 and the saw body 1. When the bolt is screwed in, the plug 21 at both ends is pressed and moved to both ends, so that the snap block 211 is inserted into the snap groove 111. At this time, the inner arc surface 214 of the plug block 21 abuts against the bolt to increase the stability of the overall structure. When a blade 22 is worn, the bolt is unscrewed. Under the action of the spring 212, the two plug blocks 21 automatically slide towards the middle, which makes it easy to disassemble the blade 2.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A type of insert-type circular saw blade, characterized in that: The saw blade assembly includes a saw blade body and several blades. Each blade consists of a blade block and a toothed sleeve. The outer circumference of the saw blade body is circumferentially spaced with insertion slots corresponding to the number of blades. The inner edges of the blade blocks are slidably connected to oppositely sliding insertion blocks, which are used for radial insertion into the insertion slots. The toothed sleeve is fitted onto the tip of the blade block and connected to the tip of the blade block with a countersunk screw. Both ends of the insertion slots have locking slots, and the outer ends of the two insertion blocks are fixed with locking blocks. The inner surfaces of the two insertion blocks are arc-shaped. The middle of the blade block and the bottom of the insertion slots are radially provided with corresponding threaded holes. When bolts are threaded into the threaded holes of the blade block and the saw blade body, the arc-shaped inner surfaces of the two insertion blocks abut against the bolts, and the two locking blocks protrude from both sides of the blade block and are inserted into the locking slots. The toothed sleeve is made of high-speed steel, while the saw blade body, blade blocks, and insertion blocks are made of low-alloy tool steel.

2. The insert-type circular saw blade according to claim 1, characterized in that: The diameter of the threaded hole is greater than the total length of the two snap-fit ​​blocks.

3. The insert-type circular saw blade according to claim 1, characterized in that: The inner edges of the blade block are provided with sliding grooves at both ends, and the outer edges of the plug block are fixed with sliding blocks, which are slidably disposed in the sliding grooves.

4. The insert-type circular saw blade according to claim 3, characterized in that: The radial cross-section of the sliding groove and the sliding block is T-shaped.

5. The insert-type circular saw blade according to claim 1, characterized in that: The rear end of the serrated sleeve has a receiving cavity that matches the shape of the blade tip, and the serrated sleeve is interference-fitted with the blade tip through the receiving cavity.

6. The insert-type circular saw blade according to claim 1, characterized in that: A spring connects the two insertion blocks of the same blade. When the spring is in its natural state, the inner surfaces of the two insertion blocks fit together.

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