Numerical control belt sander for rounding the edge of kitchen knives
Patent Information
- Application Number
- CN202522406593.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-13
AI Technical Summary
The existing CNC belt sander fixtures for rounding the edges of kitchen knives have problems such as unstable clamping, easy loosening or falling off, inability to provide comprehensive support and protection, and uneven clamping force leading to damage to the knife surface.
The design employs a cylinder slide rail and pressing block, combined with a dual-cylinder clamp and airflow integration interface, to achieve uniform clamping and synchronous control of the tool, enhance clamping force and distribute pressure, and avoid localized damage.
This ensures that the cutting tool is stably clamped during machining, preventing it from loosening or falling off, improving machining accuracy and safety, while also protecting the tool surface and enhancing ease of operation.
Smart Images

Figure CN224927700U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting tool processing technology, and in particular to a tooling fixture for a CNC belt sander for rounding the edges of kitchen knives. Background Technology
[0002] CNC belt sanders for rounding the edges of kitchen knives typically employ specialized magnetic clamps or adjustable V-block fixtures to achieve rapid positioning and stable clamping of the knife blade. These clamps ensure precise fixation of the kitchen knife during the grinding process and adapt to the processing requirements of different blade shapes and curved surfaces.
[0003] Existing fixtures are unstable and prone to loosening or falling off; existing fixtures lack comprehensive wrapping and protection for the cutting tool; existing fixtures with high clamping force usually clamp the cutting tool face and have a small contact area, which can easily damage the cutting tool surface.
[0004] Existing fixtures often only clamp the tool handle, resulting in uneven clamping force and an inability to provide comprehensive support and protection for the tool. When subjected to vibration during machining, the tool is prone to falling off during and after machining, seriously affecting machining safety and tool quality. Existing fixtures with high clamping force usually have a small contact area with the tool surface, causing the clamping force to concentrate on a few local points on the tool, forming huge local pressure, which causes scratches on the tool surface and inconsistent tool quality. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a tooling fixture for a CNC belt sander for rounding the edges of kitchen knives.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife, including a cylinder slide rail, a connecting and fixing structure fixedly connected to the top of the cylinder slide rail, and a clamping structure fixedly connected to one side of the connecting and fixing structure.
[0007] The clamping structure includes a connecting shaft, a knife groove is fixedly connected to one side of the connecting shaft, a limiting slide rail is fixedly connected to the inner side of the top of the knife groove, and a pressing block is slidably connected to the outer side of the limiting slide rail.
[0008] In a preferred embodiment, a fixing block one is fixedly connected to the top of the blade groove, a fixing block two is fixedly connected to the top of the fixing block one, and a clamping structure two is fixedly connected to the inner side of the fixing block two.
[0009] In a preferred embodiment, the clamping structure two includes a cylinder, an air inlet pipe fixedly connected to the air inlet of the cylinder, and an air outlet pipe fixedly connected to the air outlet of the cylinder.
[0010] In a preferred embodiment, the end of the intake pipe away from the cylinder is fixedly connected to an airflow integration interface, and the end of the exhaust pipe away from the cylinder is fixedly connected to the side of the intake pipe connected to the airflow integration interface.
[0011] In a preferred embodiment, the clamping structure two further includes a cylinder two, the air inlet of the cylinder two is fixedly connected to an air inlet pipe two, and the air outlet of the cylinder one is fixedly connected to an air outlet pipe two.
[0012] In a preferred embodiment, the end of the second intake pipe away from the first cylinder is fixedly connected to the second airflow integration interface, and the end of the second exhaust pipe away from the second cylinder is fixedly connected to the side of the second intake pipe connected to the second airflow integration interface.
[0013] In a preferred embodiment, the bottom end of cylinder one is fixedly connected to the top end of the pressing block, and the bottom end of cylinder two is fixedly connected to the top end of the pressing block.
[0014] In a preferred embodiment, the connecting and fixing structure includes a connecting frame, a stepper motor is disposed on the inner side of the connecting frame, a mounting plate is fixedly connected to one side of the connecting frame, and the output end of the stepper motor is fixedly connected to one end of the connecting shaft.
[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0016] This invention utilizes pressing blocks and tool grooves that precisely conform to the shape of the cutting tool to provide uniform and stable wrapping clamping for the tool throughout the entire machining process, effectively preventing the tool from loosening or falling off. Simultaneously, the dual-cylinder clamping configuration further enhances the overall clamping force, ensuring the required firmness for machining while dispersing pressure by increasing the contact area, thus avoiding damage to the tool surface due to localized stress concentration. The integrated airflow interface enables synchronous control of the two cylinders, ensuring coordinated clamping actions, improving clamping efficiency and reliability, thereby guaranteeing machining accuracy while also considering ease of operation and tool safety. Attached Figure Description
[0017] Figure 1 This utility model provides a schematic diagram of the tooling fixture for a CNC belt sander used for rounding the edges of kitchen knives.
[0018] Figure 2 This utility model provides a schematic diagram of the cylinder slide rail of the tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife.
[0019] Figure 3 This utility model provides a schematic diagram of the connection and fixing structure of the tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife.
[0020] Figure 4 This is a schematic diagram of the linkage power structure of a tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife, provided by this utility model.
[0021] Figure 5 This is a schematic diagram of the clamping structure of a tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife, which is provided by this utility model.
[0022] Figure 6 This utility model provides a schematic diagram of the pressing slider of the tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife.
[0023] Figure 7 This is a partial schematic diagram of the clamping structure of a tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife, provided by this utility model.
[0024] Legend:
[0025] 1. Cylinder slide rail;
[0026] 2. Connecting and fixing structure; 21. Connecting frame; 22. Mounting plate; 23. Stepper motor;
[0027] 3. Clamping structure one; 31. Connecting shaft; 32. Knife groove; 33. Pressing block; 34. Fixing block one; 35. Fixing block two; 36. Clamping structure two; 361. Cylinder one; 362. Air inlet pipe one; 363. Air outlet pipe one; 364. Air outlet pipe two; 365. Air inlet pipe two; 367. Airflow integration interface one; 368. Airflow integration interface two; 369. Cylinder two; 37. Limiting slide rail. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Example 1
[0030] like Figure 1 - Figure 7As shown, this utility model provides a technical solution: a tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife, including a cylinder slide rail 1, a connecting and fixing structure 2 fixedly connected to the top of the cylinder slide rail 1, a clamping structure 3 fixedly connected to one side of the connecting and fixing structure 2, the clamping structure 3 including a connecting shaft 31, a knife groove 32 fixedly connected to one side of the connecting shaft 31, a limiting slide rail 37 fixedly connected to the inner side of the top of the knife groove 32, a pressing block 33 slidably connected to the outer side of the limiting slide rail 37, a fixing block 34 fixedly connected to the top of the knife groove 32, a fixing block 35 fixedly connected to the top of the fixing block 34, and a clamping structure 36 fixedly connected to the inner side of the fixing block 35.
[0031] The clamping structure 2 36 includes a cylinder 361, an air inlet pipe 362 fixedly connected to the air inlet of the cylinder 361, an air outlet pipe 363 fixedly connected to the air outlet of the cylinder 361, an airflow integration interface 367 fixedly connected to the end of the air inlet pipe 362 away from the cylinder 361, and an air outlet pipe 363 away from the cylinder 361 and the airflow integration interface 367 are fixedly connected to one side of the air inlet pipe 362.
[0032] The clamping structure 2 36 also includes cylinder 2 369. The air inlet of cylinder 2 369 is fixedly connected to air inlet pipe 2 365, and the air outlet of cylinder 1 361 is fixedly connected to air outlet pipe 2 364. The end of air inlet pipe 2 365 away from cylinder 1 361 is fixedly connected to airflow integration interface 2 368, and the end of air outlet pipe 2 364 away from cylinder 2 369 is fixedly connected to the airflow integration interface 2 368 and the side of air inlet pipe 2 365 is fixedly connected.
[0033] In this embodiment, the clamping structure 36 is activated, causing the pressing block 33, which is fixedly connected to the clamping structure 36, to slide on the limiting slide rail 37, thereby achieving the effect of clamping the tool. Since the shape of the pressing block 33 conforms to the shape of the tool, and since cylinder 361 and cylinder 369 are respectively located at the handle and the blade surface, the pressing block 33, which is fixedly connected to cylinder 361 and air outlet pipe 363, has the same clamping force at the handle and the blade surface, ensuring that the tool is clamped tightly. Furthermore, since the area of the pressing block 33 conforms to the area of the tool, the tool will not be damaged due to an excessively large clamp. The tool groove 32 ensures that the tool will not fall off due to the loosening of the clamp after the grinding work is completed, thus protecting the tool. The fixing block 35 fixes cylinder 361 and cylinder 369. The fixing block 34 has a hole near the center of cylinder 361 and cylinder 369, so that the bottom end of cylinder 361 and the bottom end of cylinder 369 can be fixedly connected to the pressing block 33. Since there is a notch on the tool groove 32, the back of the tool is fully exposed, so that the grinding effect is not affected by the shape of the clamp when grinding the back of the tool.
[0034] The airflow output from the solenoid valve is integrated through the airflow integration interface 367, and then flows into the intake pipe 362 and intake pipe 365, which are fixedly connected to the airflow integration interface 367. The airflow flowing through cylinder 361 and cylinder 369 is integrated through the airflow integration interface 368, and then flows into the solenoid valve through the exhaust pipe 363 and exhaust pipe 364, which are fixedly connected to the airflow integration interface 368, thereby achieving the effect of simultaneous clamping of cylinder 361 and cylinder 369.
[0035] Example 2
[0036] like Figure 1 - Figure 4 As shown, the bottom end of cylinder 361 is fixedly connected to the top end of pressing block 33, the bottom end of cylinder 369 is fixedly connected to the top end of pressing block 33, the connecting and fixing structure 2 includes a connecting frame 21, a stepper motor 23 is provided on the inner side of the connecting frame 21, a mounting plate 22 is fixedly connected to one side of the connecting frame 21, and the output end of the stepper motor 23 is fixedly connected to one end of the connecting shaft 31.
[0037] In this embodiment, the cylinder slide rail 1 is activated, which allows the connecting and fixing structure 2, which is fixedly connected to the slider on the cylinder slide rail 1, to reciprocate, thereby achieving the effect of moving the tool away from the CNC belt sander after the grinding is completed, and the effect of placing the tool under the CNC belt sander when grinding is required.
[0038] The control wires of the stepper motor 23 can pass through the holes provided on the connecting frame 21, thereby achieving the effect of controlling the operation of the stepper motor 23. When the stepper motor 23 is started, the clamping structure 3, which is fixedly connected to the output end of the stepper motor 23, rotates according to the specified requirements.
[0039] Working principle:
[0040] like Figure 1 - Figure 7 As shown, the airflow output from the solenoid valve is integrated through the airflow integration interface 367, and then flows into the intake pipe 362 and intake pipe 365, which are fixedly connected to the airflow integration interface 367. The airflow flowing through cylinder 361 and cylinder 369 is integrated through the airflow integration interface 368, and then flows into the solenoid valve through the exhaust pipe 363 and exhaust pipe 364, which are fixedly connected to the airflow integration interface 368. This achieves the effect of simultaneous clamping by cylinder 361 and cylinder 369, and causes the pressing block 33, which is fixedly connected to cylinder 361 and cylinder 369, to slide on the limit slide rail 37, thereby achieving the effect of clamping the tool.
[0041] The control wires of the stepper motor 23 can pass through the holes provided on the connecting frame 21, thereby achieving the effect of controlling the operation of the stepper motor 23. When the stepper motor 23 is started, the clamping structure 3, which is fixedly connected to the output end of the stepper motor 23, rotates according to the specified requirements.
[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A tooling fixture for a CNC belt sander for rounding the edges of kitchen knives, comprising: A cylinder slide rail (1) is characterized in that a connecting and fixing structure (2) is fixedly connected to the top end of the cylinder slide rail (1), and a clamping structure (3) is fixedly connected to one side of the connecting and fixing structure (2). The clamping structure 1 (3) includes a connecting shaft (31), a knife groove (32) is fixedly connected to one side of the connecting shaft (31), a limiting slide rail (37) is fixedly connected to the inner side of the top of the knife groove (32), and a pressing block (33) is slidably connected to the outer side of the limiting slide rail (37).
2. The tooling fixture for a CNC belt sander for rounding the edges of kitchen knives according to claim 1, characterized in that: The top of the blade groove (32) is fixedly connected to a fixing block one (34), the top of the fixing block one (34) is fixedly connected to a fixing block two (35), and the inner side of the fixing block two (35) is fixedly connected to a clamping structure two (36).
3. The tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife according to claim 2, characterized in that: The clamping structure two (36) includes a cylinder one (361), the air inlet of the cylinder one (361) is fixedly connected to an air inlet pipe one (362), and the air outlet of the cylinder one (361) is fixedly connected to an air outlet pipe one (363).
4. The tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife according to claim 3, characterized in that: The end of the intake pipe (362) away from the cylinder (361) is fixedly connected to the airflow integration interface (367), and the end of the exhaust pipe (363) away from the cylinder (361) is fixedly connected to the side of the intake pipe (362) connected to the airflow integration interface (367).
5. The tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife according to claim 4, characterized in that: The clamping structure two (36) also includes a cylinder two (369), the air inlet of the cylinder two (369) is fixedly connected to an air inlet pipe two (365), and the air outlet of the cylinder one (361) is fixedly connected to an air outlet pipe two (364).
6. The tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife according to claim 5, characterized in that: The end of the second intake pipe (365) away from the first cylinder (361) is fixedly connected to the second airflow integration interface (368), and the end of the second exhaust pipe (364) away from the second cylinder (369) is fixedly connected to the side of the second intake pipe (365) connected to the second airflow integration interface (368).
7. The tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife according to claim 6, characterized in that: The bottom end of cylinder one (361) is fixedly connected to the top end of pressing block (33), and the bottom end of cylinder two (369) is fixedly connected to the top end of pressing block (33).
8. The tooling fixture for a CNC belt sander for rounding the edge of a kitchen knife according to claim 1, characterized in that: The connecting and fixing structure (2) includes a connecting frame (21), a stepper motor (23) is provided on the inner side of the connecting frame (21), a mounting plate (22) is fixedly connected to one side of the connecting frame (21), and the output end of the stepper motor (23) is fixedly connected to one end of the connecting shaft (31).
