Chamfering cutter with telescopic cutter bar
By designing a chamfering cutter with a telescopic handle, the length of the handle can be adjusted using a telescopic rod and related structures. This solves the problem of frequent replacements required by traditional chamfering cutters, improves operational efficiency and stability, simplifies the operation process, and ensures the accuracy and safety of chamfering operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI FONHAE PRECISION TOOLS CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional chamfering cutter shanks have a fixed length, which requires frequent replacement when dealing with workpieces of different sizes and shapes, increasing the complexity of the operation process and reducing work efficiency.
A chamfering cutter with a telescopic cutter bar was designed. By installing components such as a telescopic rod, hollow tube, fixing rod, connecting plate and operating rod on the chamfering cutter body, and using structures such as spring, anti-disengagement block and blocking plate, the length of the cutter bar can be adjusted to ensure operational stability and safety.
This eliminates the need for frequent chamfering tool changes when dealing with workpieces of different sizes and shapes, improving operational efficiency and stability, simplifying the operation process, and ensuring the accuracy and safety of chamfering operations.
Smart Images
Figure CN224143534U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting tool technology, and in particular to a chamfering tool with a retractable shank. Background Technology
[0002] In machining processes, chamfering cutters are commonly used to chamfer the edges of workpieces to eliminate burrs and facilitate assembly. Traditional chamfering cutters have a fixed shank length, which presents several limitations in practical use. When chamfering workpieces of different sizes and shapes is required, the non-adjustable shank length forces operators to frequently change to suitable chamfering cutters. This not only increases the complexity of the operation process and reduces work efficiency but also significantly increases production costs.
[0003] The inventors believe that the following drawbacks often exist: traditional chamfering cutters have a fixed shank length. When faced with chamfering requirements for workpieces of different sizes and shapes, operators can only frequently change to a suitable chamfering cutter, which is not only time-consuming and laborious, but also increases the complexity of the operation process and causes a significant reduction in work efficiency. Therefore, a chamfering cutter with a telescopic shank is proposed to address the above problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing chamfering tools with fixed shank lengths, which require operators to frequently change chamfering tools when faced with chamfering requirements for workpieces of different sizes and shapes. Therefore, this invention proposes a chamfering tool with a telescopic shank.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a chamfering cutter with a telescopic handle, comprising a chamfering cutter body, a telescopic rod mounted on the surface of the chamfering cutter body, a hollow tube fixedly connected to one side of the chamfering cutter body, the hollow tube being slidably connected to the arc surface of the telescopic rod, two fixing rods fixedly connected to the arc surface of the hollow tube, a connecting plate fixedly connected to one end of the fixing rod, an operating rod slidably inserted into the connecting plate, a plurality of circular holes being formed on the arc surface of the telescopic rod, and two arc-shaped grooves being formed on the arc surface of the hollow tube.
[0006] The effect achieved by the above-mentioned components is that they achieve the effect of a telescopic rod, avoiding the situation where the telescopic rod of the chamfering tool body cannot extend or retract. When faced with chamfering requirements for workpieces of different sizes and shapes, operators have to frequently change the appropriate chamfering tool, which is not only time-consuming and laborious, but also increases the complexity of the operation process and causes a significant reduction in work efficiency.
[0007] Preferably, a spring is fitted onto the arc surface of the operating lever, and the two ends of the spring are fixedly connected to the connecting plate and the operating lever, respectively.
[0008] The aforementioned components achieve the following effects: they improve the stability of the operating lever. The spring's rebound force allows the operating lever to be quickly and accurately inserted into the circular hole of the telescopic rod, effectively preventing the operating lever from shaking or shifting due to external forces. This not only significantly improves the stability of the operating lever during operation but also ensures that the telescopic rod will not extend or retract arbitrarily after reaching a fixed length, thus guaranteeing the accuracy and efficiency of the chamfering operation.
[0009] Preferably, the arc surface of the cutter bar is fixedly connected to two anti-detachment blocks, and the anti-detachment blocks are slidably connected to the surface of the arc groove of the hollow tube.
[0010] The aforementioned components achieve the following effect: preventing the telescopic rod from pulling off. When adjusting the length of the telescopic rod, when the telescopic rod is stretched to its maximum length, the anti-detachment block will fit against the surface of the hollow tube arc groove, effectively preventing the telescopic rod from pulling off. This greatly enhances the safety and reliability of the telescopic rod during use.
[0011] Preferably, the arc surface of the fixing rod is rotatably connected to a blocking plate, and the surface of the blocking plate is provided with a circular groove.
[0012] The aforementioned components achieve the following effect: they limit the position of the operating lever, preventing the lever from being affected by external forces when the operator adjusts the length of the telescopic rod, thus avoiding the lever sliding within the connecting plate and the possibility of friction between the lever and the telescopic rod, which could cause damage to the operating lever.
[0013] Preferably, the arc surface of the fixing rod is fitted with a torsion spring, and the two ends of the torsion spring are fixedly connected to the blocking plate and the connecting plate, respectively.
[0014] The aforementioned components achieve the following effects: they automatically open the barrier while keeping it open. When the operator pulls the control lever to separate the two, there is no need for manual operation to open the barrier, simplifying the process of fixing the length of the telescopic rod and improving operational convenience and efficiency.
[0015] Preferably, two positioning plates are fixedly connected to the arc surface of the hollow tube, and an absorbent pad is fixedly connected to one side of the positioning plate.
[0016] The above-mentioned components achieve the following effects: they position the blocking plate, reduce the angle of the blocking plate's rotation, and position the blocking plate to a certain extent, making it convenient for workers to use the blocking plate from a certain angle and reducing the complexity of operation.
[0017] In summary, the beneficial effects of this utility model are as follows:
[0018] In this invention, the telescopic rod is telescopic, avoiding the situation where the telescopic rod of the chamfering tool body cannot extend or retract. When faced with chamfering requirements for workpieces of different sizes and shapes, operators have to frequently change the appropriate chamfering tool, which is not only time-consuming and laborious, but also increases the complexity of the operation process and causes a significant reduction in work efficiency. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of the anti-detachment block in this utility model;
[0021] Figure 3 This is a schematic diagram of the connecting plate in this utility model;
[0022] Figure 4 This is a schematic diagram of the structure of the baffle plate in this utility model.
[0023] Illustration: 1. Chamfering blade body; 2. Telescopic rod; 3. Hollow tube; 4. Fixing rod; 5. Connecting plate; 6. Operating rod; 7. Spring; 8. Positioning plate; 9. Absorbent pad; 10. Torsion spring; 11. Blocking plate; 12. Anti-detachment block. Detailed Implementation
[0024] Reference Figure 1-4As shown, this utility model provides a technical solution: a chamfering tool with a telescopic shank, including a chamfering tool body 1, a telescopic rod 2 installed on the surface of the chamfering tool body 1, a hollow tube 3 fixedly connected to one side of the chamfering tool body 1, the hollow tube 3 being slidably connected to the arc surface of the telescopic rod 2, two fixing rods 4 fixedly connected to the arc surface of the hollow tube 3, a connecting plate 5 fixedly connected to one end of the fixing rod 4, an operating rod 6 slidably inserted into the connecting plate 5, several circular holes being opened on the arc surface of the telescopic rod 2, and two arc-shaped grooves being opened on the arc surface of the hollow tube 3, achieving the effect of telescopic rod 2, avoiding the situation where the telescopic rod 2 of the chamfering tool body 1 cannot extend or retract, and when facing the chamfering requirements of workpieces of different sizes and shapes, the operator can only frequently change the appropriate chamfering tool, which is inconvenient. The time-consuming and laborious process increases the complexity of the operation, resulting in a significant decrease in work efficiency. A spring 7 is fitted onto the arc surface of the operating lever 6. Both ends of the spring 7 are fixedly connected to the connecting plate 5 and the operating lever 6, respectively. When the operator needs to adjust the length of the telescopic rod 2, they first pull the operating lever 6 and slide it within the connecting plate 5. At this time, the spring 7 is stretched, and the arc surface of the operating lever 6 slides within the circular hole of the telescopic rod 2 until the arc surface of the operating lever 6 separates from the circular hole of the telescopic rod 2. Then, the operator pulls the telescopic rod 2 and slides it within the hollow tube 3. When the telescopic rod 2 moves to the required length, the operator releases the operating lever 6. At this time, the rebound force of the spring 7 causes the operating lever 6 to slide within the connecting plate 5 until the operating lever 6 inserts into the circular hole of the telescopic rod 2. Inside the hole, the stability of the operating rod 6 is improved. The rebound force of the spring 7 can quickly and accurately insert the operating rod 6 into the circular hole of the telescopic rod 2, effectively preventing the operating rod 6 from shaking or shifting due to external forces. This not only significantly improves the stability of the operating rod 6 in the working state, but also ensures that the telescopic rod 2 will not extend or retract arbitrarily after being fixed to a fixed length, ensuring the accuracy and efficiency of the chamfering operation. Two anti-detachment blocks 12 are fixedly connected to the arc surface of the tool holder. The anti-detachment blocks 12 are slidably connected to the surface of the arc groove of the hollow tube 3. When the operator needs to adjust the length of the telescopic rod 2, the operator first releases the limit on the telescopic rod 2, and then pulls the telescopic rod 2 to drive the anti-detachment blocks 12 to slide inside the hollow tube 3. If it is necessary to extend the telescopic rod 2 to its maximum length, then the anti-detachment blocks 12 will slide inside the hollow tube 3. The surface of the telescopic rod 2 is in contact with the surface of the arc-shaped groove of the hollow tube 3, thus preventing the telescopic rod 2 from being pulled off. When adjusting the length of the telescopic rod 2, when the telescopic rod 2 is stretched to its maximum length, the anti-detachment block 12 will be in contact with the surface of the arc-shaped groove of the hollow tube 3, effectively preventing the telescopic rod 2 from being pulled off. This greatly enhances the safety and reliability of the telescopic rod 2 during use. The arc surface of the fixed rod 4 is rotatably connected to the blocking plate 11. The surface of the blocking plate 11 has a circular groove. When the operator needs to adjust the length of the telescopic rod 2, the operator first pulls the operating rod 6 and slides it in the connecting plate 5 until the operating rod 6 no longer affects the rotation of the blocking plate 11. Then the operator can rotate the blocking plate 11 on the arc surface of the fixed rod 4. When the blocking plate 11 rotates to 180 degrees,The operator can release the operating lever 6. The rebound force of the spring 7 causes the operating lever 6 to slide within the connecting plate 5 until it inserts into the circular groove of the blocking plate 11. This restricts the position of the operating lever 6, preventing it from sliding within the connecting plate 5 due to external forces when adjusting the length of the telescopic rod 2. Furthermore, the movement of the operating lever 6 may cause friction with the telescopic rod 2, potentially damaging it. A torsion spring 10 is fitted onto the arc surface of the fixing rod 4, with both ends fixedly connected to the blocking plate 11 and the connecting plate 5, respectively. When the operator needs to fix the length of the telescopic rod 2, they pull the operating lever 6, causing it to slide within the connecting plate 5 until the arc surface of the operating lever 6 separates from the circular groove of the blocking plate 11. The torque of the torsion spring 10 then causes the blocking plate 11 to rotate within the arc surface of the fixing rod 4 until the blocking plate 11 no longer interferes with the operation lever 6. The movement of the telescopic rod 2 automatically opens the blocking plate 11, keeping it open. When the operator pulls the operating lever 6 to separate the two, no additional manual operation is required to open the blocking plate 11, simplifying the process of fixing the length of the telescopic rod 2 and improving operational convenience and efficiency. Two positioning plates 8 are fixedly connected to the arc surface of the hollow tube 3. An absorbent pad 9 is fixedly connected to one side of each positioning plate 8. When the operator needs to fix the length of the telescopic rod 2, they first pull to release the restriction on the operating lever 6. The torque of the torsion spring 10 causes the blocking plate 11 to rotate on the arc surface of the fixed rod 4 until the surface of the blocking plate 11 is in contact with the absorbent pad 9. This achieves the effect of positioning the blocking plate 11, reducing the rotation angle of the blocking plate 11, and simultaneously positioning the blocking plate 11 to a certain extent, allowing the operator to use the blocking plate 11 from a certain angle, reducing operational complexity.
[0025] Working principle: When the operator needs to adjust the length of the telescopic rod 2, firstly, the operator pulls the operating rod 6 to slide within the connecting plate 5. At this time, the spring 7 is stretched, and the arc surface of the operating rod 6 slides within the circular hole of the telescopic rod 2 until the arc surface of the operating rod 6 separates from the circular hole of the telescopic rod 2, and the operating rod 6 does not affect the rotation of the blocking plate 11. Then, the operator can rotate the blocking plate 11 within the arc surface of the fixed rod 4. When the blocking plate 11 rotates to 180 degrees, the operator can release the operating rod 6. At this time, the rebound force of the spring 7 drives the operating rod 6 to slide within the connecting plate 5 until the operating rod 6 inserts into the circular groove of the blocking plate 11. Then, the operator pulls the telescopic rod 2 to drive the anti-detachment block 12 to slide within the hollow tube 3. If it is necessary to stretch the telescopic rod 2 to its maximum length, then the surface of the anti-detachment block 12 is in contact with the surface of the arc groove of the hollow tube 3. When the desired length is reached, the operator releases the operating lever 6. At this time, the rebound force of the spring 7 causes the operating lever 6 to slide within the connecting plate 5 until the operating lever 6 is inserted into the circular hole of the telescopic rod 2. When the operator needs to fix the length of the telescopic rod 2, the operator pulls the operating lever 6 to slide within the connecting plate 5 until the arc surface of the operating lever 6 separates from the circular groove of the blocking plate 11. The torque of the torsion spring 10 causes the blocking plate 11 to rotate on the arc surface of the fixing rod 4 until the blocking plate 11 no longer affects the movement of the operating lever 6 and the surface of the blocking plate 11 is in contact with the absorbent pad 9, thus achieving the effect of telescopic rod 2. This avoids the situation where the telescopic rod 2 of the chamfering cutter body 1 cannot extend or retract. When facing chamfering requirements for workpieces of different sizes and shapes, the operator can only frequently change the appropriate chamfering cutter, which is not only time-consuming and laborious, but also increases the complexity of the operation process and causes a significant reduction in work efficiency.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A chamfering tool for a telescopic toolbar comprising a chamfering tool body (1), characterized in that: The chamfering cutter body (1) is equipped with a telescopic rod (2). A hollow tube (3) is fixedly connected to one side of the chamfering cutter body (1). The hollow tube (3) is slidably connected to the arc surface of the telescopic rod (2). Two fixing rods (4) are fixedly connected to the arc surface of the hollow tube (3). A connecting plate (5) is fixedly connected to one end of the fixing rod (4). An operating rod (6) is slidably inserted into the connecting plate (5). Several circular holes are opened on the arc surface of the telescopic rod (2). Two arc-shaped grooves are opened on the arc surface of the hollow tube (3).
2. A chamfering tool for a telescopic toolbar according to claim 1, characterized in that: The arc surface of the operating lever (6) is fitted with a spring (7), and the two ends of the spring (7) are fixedly connected to the connecting plate (5) and the operating lever (6) respectively.
3. A chamfering tool for a telescopic toolbar according to claim 1, characterized in that: Two anti-detachment blocks (12) are fixedly connected to the arc surface of the blade bar, and the anti-detachment blocks (12) are slidably connected to the surface of the arc groove of the hollow tube (3).
4. The chamfering tool of a telescopic tool bar according to claim 1, characterized in that: The fixed rod (4) is rotatably connected to a blocking plate (11), and the surface of the blocking plate (11) is provided with a circular groove.
5. The chamfering tool of a telescopic tool bar according to claim 1, characterized in that: The arc surface of the fixing rod (4) is fitted with a torsion spring (10), and the two ends of the torsion spring (10) are fixedly connected to the blocking plate (11) and the connecting plate (5) respectively.
6. A chamfering tool for a telescopic toolbar according to claim 1, characterized in that: Two positioning plates (8) are fixedly connected to the arc surface of the hollow tube (3), and an absorbent pad (9) is fixedly connected to one side of the positioning plate (8).