Ceramic knife sharpening machine

Abstract

The invention discloses a ceramic knife sharpening machine, comprising a grinding wheel and a bearing arm, wherein the axis of the grinding wheel is perpendicular to the YZ plane; a tool holder for mounting a tool is arranged at the front end of the bearing arm, and the bearing arm moves away from or close to the grinding wheel in the X-axis direction under the driving of a first driving mechanism, so that when the front end of the bearing arm passes through the grinding wheel, the grinding wheel grinds the blade of the tool on the tool holder; the bottom of the bearing arm has at least one profiling groove with the same shape as the blade of the tool, and the profiling groove is slidably connected to an eccentric shaft, and the eccentric shaft rotates under the driving of a second driving mechanism and drives the bearing arm to move away from or close to the grinding wheel in the Z-axis direction. The device has a simple structure, high processing accuracy, and is easy to use.

Description

Technical Field

[0001] The invention relates to the field of ceramic knife processing equipment, in particular to a ceramic knife sharpening machine. Background Art

[0002] Ceramic knives are made of high-purity ultrafine zirconium oxide as raw material and are manufactured through multiple processes such as spray granulation, isostatic pressing, and precision machining. They have the characteristics of high hardness, strong corrosion resistance, good chemical stability, and high wear resistance. They have beautiful and exquisite appearance and extremely sharp cutting edges. They are truly knives that will never wear out or corrode.

[0003] Currently, most of the ceramic knife sharpening operations are done manually or by machine. Manual processing has low efficiency and capacity. Although automated machine processing can improve production efficiency, there are subtle differences in the appearance of the ceramic knives to be processed. The current sharpening machines have fixed sharpening depths and tool feed processes, resulting in uneven grinding effects on the ceramic knives and inconsistent sharpness of the finished products.

[0004] Chinese document CN1895845A discloses a ceramic knife sharpening device, which mounts the tool on a tooling grinding disc, and then uses a sharpening grinding wheel that can move in the XY plane to sharpen the tool on the rotating tooling grinding disc; the solution in this application has the above-mentioned defects, that is, the movable space of the grinding wheel or the tool is limited. When faced with each tool with a slight difference in shape, there are differences in the sharpening results, resulting in different sharpening results for each tool, affecting the quality of the product. Summary of the invention

[0005] In view of this, it is necessary to provide a ceramic knife sharpening machine with fast processing speed and stable processing quality.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a ceramic knife sharpening machine, comprising a grinding wheel and a carrying arm, the axis of the grinding wheel is perpendicular to the YZ plane; a tool holder for mounting a tool is provided at the front end of the carrying arm, and the carrying arm is driven by a first driving mechanism to move away from or close to the grinding wheel along the X-axis direction, so that when the front end of the carrying arm passes through the grinding wheel, the grinding wheel grinds the blade of the tool on the tool holder; the bottom of the carrying arm has at least one profiling groove with the same shape as the blade of the tool, and the profiling groove is slidably connected to an eccentric shaft, and the eccentric shaft is driven by a second driving mechanism to rotate and drive the carrying arm to move away from or close to the grinding wheel along the Z-axis direction.

[0007] Furthermore, the bearing arm includes a profiling frame and a cantilever beam, the rear end of the cantilever beam is fixedly connected to the front end of the profiling frame, the profiling groove is arranged at the bottom of the profiling frame, the rear end of the profiling frame is transmission-connected to the first driving mechanism, and the tool holder is arranged at the front end of the cantilever beam.

[0008] Furthermore, a buckle for fastening the rear end of the tool is rotatably connected to the rear end of the tool holder, and a top spring for connecting the rear end of the buckle is fixedly connected to the cantilever beam.

[0009] Furthermore, the grinding wheel is rotatably connected to a motor, and the motor is fixedly connected to a YZ coordinate moving platform.

[0010] Furthermore, a weight block is provided at the bottom of the front end of the cantilever beam.

[0011] Furthermore, the weight block is a magnet.

[0012] Furthermore, the first driving mechanism is a hydraulic cylinder.

[0013] Furthermore, the second driving mechanism includes a sprocket fixedly connected to one end of the eccentric shaft, a chain drivingly connected to the sprocket, and a pedal driving the chain to rotate.

[0014] Furthermore, the eccentric shaft is rotatably connected to two bearing seats, two limiting rings are fixedly connected to the eccentric shaft, and the contour frame is slidably connected to the eccentric shaft between the two limiting rings.

[0015] Furthermore, a counterweight rod is fixedly connected to the eccentric shaft, so that the eccentric shaft automatically rotates without external force so that the cantilever beam is located at the lowest point.

[0016] Furthermore, the contoured frame is a channel steel.

[0017] Furthermore, the number of the grinding wheels is two, and the front end of the cantilever beam is fixedly connected to two tool holders.

[0018] Furthermore, the number of the contoured grooves is two.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The device adopts the design of eccentric shaft, so that the carrying arm has the function of moving in the Z-axis direction, which can make the grinding effect of the tool blade better and ensure the yield rate.

[0021] 2. Through the cooperation of the eccentric shaft and the hydraulic cylinder, the device realizes that the blade of the tool has dual movement functions in the X-axis and Z-axis directions, which can better perform grinding operations.

[0022] In order to make the above and other purposes, features and advantages of the present invention more clearly understood, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic front view of the structure of an embodiment of the present invention.

[0024] Figure 2 It is a schematic top view of the structure of an embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure in which the eccentric shaft drives the carrying arm to rise in an embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the lowering of the carrying arm in an embodiment of the present invention.

[0027] In the figure: 1-machine platform, 11-hydraulic station, 12-hydraulic cylinder, 2-bearing arm, 3-profiling frame, 31-profiling groove, 4-cantilever beam, 41-tool holder, 42-weight block, 43-buckle, 44-top spring, 5-grinding wheel, 6-tool, 7-bearing seat, 71-eccentric shaft, 72-counterweight rod, 73-limiting ring, 74-sprocket. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0029] like Figure 1-4 As shown, a ceramic knife sharpening machine includes a machine platform 1, a hydraulic station 11 fixed on the machine platform 1, and a hydraulic cylinder 12 transmission-connected to the hydraulic station 11; a bearing arm 2 is rotationally connected to the piston rod of the hydraulic cylinder 12; two YZ two-coordinate moving platforms are fixedly connected to the machine platform 1, a motor is fixedly connected to the moving end of the YZ two-coordinate moving platform, and a grinding wheel 5 is transmission-connected to the motor.

[0030] The two grinding wheels 5 are located in the same YZ plane, and the axis of the grinding wheel 5 is perpendicular to the YZ plane. The grinding wheel 5 is moved in the YZ plane by the YZ two-coordinate moving platform. After the grinding outer diameter of the grinding wheel 5 becomes smaller, the position of the grinding wheel 5 is adjusted to ensure that the grinding wheel 5 is in contact with the tool 6.

[0031] The bearing arm 2 includes a profiling frame 3 and a cantilever beam 4. The rear end of the cantilever beam 4 is fixedly connected to the front end of the profiling frame 3 by bolts. Two profiling grooves 31 are arranged at the bottom of the profiling frame 3. The rear end of the profiling frame 3 is rotatably connected to the first driving mechanism (i.e., the hydraulic cylinder 12) through a connecting rod. The front end of the cantilever beam 4 is provided with two tool holders 41 for mounting tools. Driven by the hydraulic cylinder 12, the bearing arm 2 moves away from or close to the grinding wheel 5 along the X-axis direction. When the tool 6 on the tool holder 41 passes through the side of the grinding wheel 5, the grinding wheel 5 grinds a side wall of the blade of the tool 6.

[0032] The profiling groove 31 has the same shape as the blade of the tool 6, and the profiling groove 31 is slidably connected to an eccentric shaft 71; when the supporting arm 2 moves along the X-axis direction, the supporting arm 2 moves along the shape of the profiling groove 71 in the X-axis direction, so that the blade of the tool 6 can contact and grind with the grinding wheel 5 according to its shape.

[0033] The eccentric shaft 71 is rotatably connected to the two bearing seats 7, two limiting rings 73 are fixedly connected to the eccentric shaft 71, and the contour frame 3 is slidably connected to the eccentric shaft 71 between the two limiting rings to prevent the contour frame 3 from moving in the Y-axis direction.

[0034] The eccentric shaft 71 is fixedly connected with a counterweight rod 72, so that the eccentric shaft 71 automatically rotates without external force to make the cantilever beam at the lowest point. The counterweight rod 72 adopts a bolt, and the bolt is screwed on the counterweight rod.

[0035] The eccentric shaft 71 is driven to rotate by a second driving mechanism, which includes a sprocket 74 fixedly connected to one end of the eccentric shaft, a chain connected to the sprocket 74, and a pedal (not shown in the figure) for driving the chain to rotate; when the pedal is stepped on, the pedal drives the eccentric shaft to rotate 180° through the chain; when the pedal is released, the eccentric shaft automatically rotates 180° to reset under the action of the counterweight rod. The pedal controls the eccentric position of the eccentric shaft to flip 180°, causing the height of the tool holder to increase, increasing the intersection of the tool blade and the grinding wheel, thereby realizing the function of grinding feed; two grinding wheels are fixed to the left and right front of the tool holder, and each grinding wheel can be adjusted in the Y and Z directions according to actual needs to realize the relative position of the grinding wheel and the blade profile.

[0036] In this embodiment, the rear end of the tool holder 41 is rotatably connected to a buckle 43 for fastening the rear end of the tool, and a top spring 44 for connecting the rear end of the buckle is fixedly connected to the cantilever beam 4. The top spring 44 and the buckle 43 work together to press the end of the tool, ensuring that the rear end of the tool does not rise when the front end of the tool contacts the grinding wheel.

[0037] The width of the knife holder is only 2-3 inches wider than the thickness of the knife.

[0038] In this embodiment, a weight block 42 is provided at the bottom of the front end of the cantilever beam. The weight block 42 is a magnet, which is adsorbed on the bottom of the steel cantilever beam. The weight block 42 makes the front end of the cantilever beam 4 more stable and less likely to shake.

[0039] The rotational connection among the weight block 42, the limiting ring 73, the eccentric shaft 71 and the hydraulic cylinder 12 ensures the limiting and restriction of the carrying arm 2 in the Y-axis and Z-axis directions, thereby ensuring the stability of the carrying arm during movement.

[0040] In this embodiment, the profiling frame 3 is made of channel steel, and the profiling grooves 31 are arranged on the wing plates of the channel steel. There are four contact points between the profiling frame 3 and the two eccentric shafts 71 .

[0041] When using this device, follow the steps below:

[0042] 1. Select the corresponding tool holder and profiling frame according to the tool type and install and fix them;

[0043] 2. Adjust the friction position between the two grinding wheels and the blade contour according to the knife type, and ensure that a qualified blade edge can be felt after grinding;

[0044] 3. Turn on the cooling water of the two grinding wheels and adjust the water spraying position;

[0045] 4. After installing two tools, start the grinding wheel motor and hydraulic station, press the hydraulic cylinder action button, the tool holder moves forward and backward once, step on the foot pedal and press the hydraulic cylinder action button again, the tool holder moves forward and backward once again, and performs two grindings;

[0046] 5. The two knives are swapped, and the hydraulic cylinder action button is pressed. The tool holder moves forward and backward once, and the pedal is pressed to move the tool holder again. The blades are taken out to complete the sharpening process of the two blades.

[0047] 6. Check the quality of the cutting edge and fine-tune the grinding wheel position if necessary.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A ceramic knife sharpening machine, characterized in that: The invention comprises a grinding wheel and a carrying arm, wherein the axis of the grinding wheel is perpendicular to the YZ plane; a tool holder for mounting a tool is arranged at the front end of the carrying arm, and the carrying arm moves away from or close to the grinding wheel along the X-axis direction under the driving of a first driving mechanism, so that when the front end of the carrying arm passes through the grinding wheel, the grinding wheel grinds the blade of the tool on the tool holder; The bottom of the carrying arm has at least one profiling groove with the same shape as the tool blade, and the profiling groove is slidably connected to an eccentric shaft. The eccentric shaft rotates under the drive of a second driving mechanism and drives the carrying arm to move away from or close to the grinding wheel along the Z-axis direction.

2. The ceramic knife sharpening machine according to claim 1, characterized in that: The bearing arm comprises a profiling frame and a cantilever beam, the rear end of the cantilever beam is fixedly connected to the front end of the profiling frame, the profiling groove is arranged at the bottom of the profiling frame, the rear end of the profiling frame is transmission-connected to the first driving mechanism, and the tool holder is arranged at the front end of the cantilever beam.

3. The ceramic knife sharpening machine according to claim 2, characterized in that: The rear end of the tool holder is rotatably connected with a buckle for fastening the rear end of the tool, and the cantilever beam is fixedly connected with a top spring for connecting the rear end of the buckle.

4. The ceramic knife sharpening machine according to claim 2, characterized in that: The grinding wheel is rotatably connected to a motor, and the motor is fixedly connected to a YZ coordinate moving platform.

5. The ceramic knife sharpening machine according to claim 2, characterized in that: A weight block is arranged at the bottom of the front end of the cantilever beam.

6. The ceramic knife sharpening machine according to claim 5, characterized in that: The weight block is a magnet.

7. The ceramic knife sharpening machine according to claim 2, characterized in that: The first driving mechanism is a hydraulic cylinder.

8. The ceramic knife sharpening machine according to claim 2, characterized in that: The second driving mechanism comprises a sprocket fixedly connected to one end of the eccentric shaft, a chain drivingly connected to the sprocket, and a pedal driving the chain to rotate.

9. The ceramic knife sharpening machine according to claim 2, characterized in that: The eccentric shaft is rotatably connected to the two bearing seats, two limiting rings are fixedly connected to the eccentric shaft, and the contour frame is slidably connected to the eccentric shaft between the two limiting rings.

10. The ceramic knife sharpening machine according to claim 2, characterized in that: The eccentric shaft is fixedly connected with a counterweight rod, so that the eccentric shaft automatically rotates without external force so that the cantilever beam is located at the lowest point.

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