A new double-station knife grinder
By using a dual-station design and automated fixing components, the problem of low efficiency in single-station grinding machines is solved, enabling synchronous grinding and rapid clamping of two tools, thereby improving the processing efficiency and versatility of the grinding machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LILIAN INTELLIGENT DEVICE CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-02
AI Technical Summary
Existing grinding machines typically employ a single-station design, resulting in low processing efficiency. Furthermore, the existing fixing methods are cumbersome and cannot meet the demands of modern industrial high-efficiency production.
Design a dual-station grinding machine that uses a bidirectional grinding assembly and a fixing assembly. The grinding wheels on both sides are driven to move synchronously by a bidirectional screw, so that two tools can be ground at the same time. The machine is fast clamped and finely adjusted by an electric push rod and a moving threaded rod.
It improves processing efficiency and fixation effect, enables synchronous grinding and quick clamping of two tools, is applicable to tools of different sizes, and enhances the versatility and stability of the grinding machine.
Smart Images

Figure CN224310223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of knife grinding machine technology, and in particular to a novel dual-station knife grinding machine. Background Technology
[0002] A knife sharpening machine is a machining equipment used to sharpen the cutting edge of a tool to keep it sharp or achieve a specific geometric shape. It is widely used in industries such as machinery manufacturing, hardware processing, woodworking, printing, and packaging, and is one of the key pieces of equipment to ensure the precision and service life of tools.
[0003] Traditional tool grinding machines typically employ a single-station design, allowing only one tool to be ground at a time. This results in low processing efficiency, failing to meet the demands of modern industrial large-scale, high-efficiency production. Furthermore, existing methods of securing the tool usually involve using bolts, requiring manual tightening of each bolt. Clamping a single tool often necessitates multiple rotations, which is cumbersome and further impacts processing efficiency.
[0004] Therefore, a new type of dual-station grinding machine is proposed. Utility Model Content
[0005] The purpose of this utility model is to provide a new type of dual-station grinding machine, which can solve the problems of existing grinding machines that usually adopt a single-station design, which can only grind one tool at a time. This results in low processing efficiency and cannot meet the needs of large-scale and high-efficiency production in modern industry. In addition, the existing fixing method usually uses bolts to fix the tool, which requires manual tightening of each bolt. Clamping a tool usually requires multiple rotation operations, which is cumbersome and affects the processing efficiency.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel dual-station grinding machine, comprising a base, a bidirectional grinding assembly being provided on the top of the base and a controller being installed on the right side of the base, a support U-shaped seat being fixedly connected to the front side of the base, and a fixing component being provided inside the support U-shaped seat, the fixing component including a placement frame;
[0007] The bidirectional grinding assembly includes a mounting block with a through hole inside. A bidirectional screw is rotatably connected inside the through hole. Threaded blocks are threaded to both sides of the surface of the bidirectional screw. A motor mounting housing is fixedly connected to the front side of the threaded blocks, and a drive motor is installed inside the motor mounting housing. A grinding wheel is fixedly connected to the output end of the drive motor.
[0008] Preferably, a partition plate is fixedly connected to the center of the placement frame, and electric push rods are fixedly connected to both sides of the partition plate.
[0009] Preferably, the telescopic end of the electric push rod is fixedly connected to an L-shaped frame, the inside of which is provided with a pressure plate, and a cutter is provided between the pressure plate and the opposite side of the placement frame.
[0010] Preferably, a movable threaded rod is threaded through and connected to the top of the L-shaped frame, and the bottom end of the movable threaded rod is rotatably connected to the top of the pressure plate through a bearing.
[0011] Preferably, a transverse limiting rod is fixedly connected inside the through hole, and the threaded block is slidably connected to the surface of the transverse limiting rod.
[0012] Preferably, a servo control motor is fixedly connected to the right side of the mounting block, and the output end of the servo control motor passes through the mounting block and is fixedly connected to the right end of the bidirectional screw.
[0013] Preferably, a telescopic cylinder is fixedly connected to the top of the base, and the telescopic end of the telescopic cylinder is fixedly connected to the bottom of the mounting block.
[0014] Preferably, the surface of the pressure plate and the inner wall of the L-shaped frame are both made of rubber.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This application improves processing efficiency by setting up a bidirectional grinding assembly, which drives the grinding wheels on both sides to move synchronously towards or away from each other through a bidirectional screw.
[0017] 2. By setting a fixing component, the electric push rod will drive the L-shaped frame and the pressure plate to move synchronously, which can quickly clamp the tools located on both sides of the partition plate. It can be applied to tools of different sizes and specifications, improving versatility. The moving threaded rod can drive the pressure plate to move up and down, thereby realizing fine adjustment of the clamping force in the vertical direction of the tool, further improving the fixing effect. Attached Figure Description
[0018] Figure 1 This is an overall structural diagram of the novel dual-station grinding machine of this utility model;
[0019] Figure 2 This utility model Figure 1 The right view;
[0020] Figure 3 This is a rear view of the placement frame of this utility model;
[0021] Figure 4 This is a schematic diagram of the bidirectional grinding tool assembly of this utility model;
[0022] Figure 5 This utility model Figure 3Enlarged diagram of point A in the middle.
[0023] In the diagram: 1. Base; 2. Bidirectional grinding assembly; 201. Mounting block; 202. Through hole; 203. Bidirectional screw; 204. Threaded block; 205. Motor mounting housing; 206. Drive motor; 207. Grinding wheel; 3. Controller; 4. Support U-shaped seat; 5. Fixing assembly; 501. Placement frame; 502. Divider plate; 503. Electric push rod; 504. L-shaped frame; 505. Pressure plate; 506. Moving threaded rod; 6. Cutting tool; 7. Lateral limit rod; 8. Servo control motor; 9. Telescopic cylinder. Detailed Implementation
[0024] 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.
[0025] Please see Figure 1-5 The present invention provides the following technical solution:
[0026] A novel dual-station grinding machine includes a base 1, a bidirectional grinding assembly 2 is provided on the top of the base 1 and a controller 3 is installed on the right side of the base 1, a support U-shaped seat 4 is fixedly connected to the front side of the base 1, and a fixing assembly 5 is provided inside the support U-shaped seat 4, the fixing assembly 5 including a placement frame 501.
[0027] The bidirectional grinding assembly 2 includes a mounting block 201. A through hole 202 is provided inside the mounting block 201. A bidirectional screw 203 is rotatably connected inside the through hole 202. Threaded blocks 204 are threadedly connected to both sides of the surface of the bidirectional screw 203. A motor mounting housing 205 is fixedly connected to the front side of the threaded block 204, and a drive motor 206 is provided inside the motor mounting housing 205. A grinding wheel 207 is fixedly connected to the output end of the drive motor 206.
[0028] In this embodiment: by setting up a bidirectional grinding assembly 2, when the bidirectional screw 203 rotates, the threaded blocks 204 on both sides can move synchronously towards or away from each other, thereby driving the threaded blocks 204, the motor mounting housing 205 and the grinding wheel 207 to achieve bidirectional feeding, so that two tools 6 can be ground at the same time. The motor mounting housing 205 can provide rigid support for the drive motor 206, and can also connect the drive motor 206 to the threaded blocks 204 to ensure that the drive motor 206 can operate stably. The drive motor 206 can drive the grinding wheel 207 to rotate at high speed, thereby realizing the grinding process of the tool 6.
[0029] Specifically, such as Figure 5 As shown, a partition plate 502 is fixedly connected to the middle of the placement frame 501, and electric push rods 503 are fixedly connected to both sides of the partition plate 502.
[0030] Specifically, such as Figure 5 As shown, the telescopic end of the electric push rod 503 is fixedly connected to an L-shaped frame 504. The L-shaped frame 504 has a pressure plate 505 inside, and a cutter 6 is provided between the pressure plate 505 and the opposite side of the placement frame 501.
[0031] Specifically, such as Figure 5 As shown, a movable threaded rod 506 is threaded through and connected to the top of the L-shaped frame 504, and the bottom end of the movable threaded rod 506 is rotatably connected to the top of the pressure plate 505 through a bearing.
[0032] In this embodiment: With the above settings, the partition plate 502 is fixed in the center of the placement frame 501, which can divide the textile frame into two independent workstations on the left and right sides, preventing the chips and coolant generated by the grinding of the tools 6 on both sides from interfering with each other, and ensuring the stability of the dual-workstation synchronous processing. The electric push rod 503 can achieve adaptive clamping of tools 6 of different lengths by telescopic extension. The L-shaped frame 504 converts the horizontal thrust of the electric push rod 503 into lateral pressure on the tool 6, so that the L-shaped frame 504 can cooperate with the inner wall of the placement frame 501 to clamp and fix the two sides of the tool 6. By rotating the moving threaded rod 506, the moving threaded rod 506 will drive the pressure plate 505 to move downward, so that the pressure plate 505 can apply downward pressure to the tool 6, further fixing the tool 6, thereby improving the fixing effect of the tool 6.
[0033] Specifically, such as Figure 4 As shown, a transverse limiting rod 7 is fixedly connected inside the through hole 202, and a threaded block 204 is slidably connected to the surface of the transverse limiting rod 7.
[0034] Specifically, such as Figure 1 , Figure 2 As shown, a servo control motor 8 is fixedly connected to the right side of the mounting block 201. The output end of the servo control motor 8 passes through the mounting block 201 and is fixedly connected to the right end of the bidirectional screw 203.
[0035] In this embodiment: Through the above settings, the lateral limiting rod 7 can limit the movement trajectory of the threaded block 204, so that the threaded block 204 and the grinding wheel 207 connected thereto can always move along a straight line, improving the stability of the bidirectional grinding assembly 2 during use. By setting the servo control motor 8, the servo control motor 8 can precisely control the rotation direction and rotation angle of the bidirectional screw 203, thereby improving the accuracy of the bidirectional grinding assembly 2 during use.
[0036] Specifically, such as Figure 2 As shown, a telescopic cylinder 9 is fixedly connected to the top of the base 1, and the telescopic end of the telescopic cylinder 9 is fixedly connected to the bottom of the mounting block 201.
[0037] Specifically, such as Figure 5 As shown, the surface of the pressure plate 505 and the inner wall of the L-shaped frame 504 are both made of rubber.
[0038] In this embodiment: With the above settings, the telescopic cylinder 9 can quickly adjust the overall height of the bidirectional grinding assembly 2, thereby adapting to tools 6 of different thicknesses and improving the flexibility of use. By setting the surface of the pressure plate 505 and the inner wall of the L-shaped frame 504 to be made of rubber, the rubber material can increase the friction coefficient between the pressure plate 505 and the L-shaped frame 504 and the tool 6, which can effectively prevent the tool 6 from slipping during grinding and further improve the fixing effect of the tool 6.
[0039] Working principle: First, place the two knives 6 on both sides of the placement frame 501, with the blades facing upwards and the handles pressed against the inner wall of the placement frame 501. Then, activate the electric push rod 503 via the controller 3. The electric push rod 503 will extend synchronously, pushing the L-shaped frame 504 to move outwards. The two L-shaped frames 504 will then push the knives 6 to the sides respectively. Once the knives 6 are tightly pressed against the inner wall of the placement frame 501, manually rotate the moving threaded rod 506. The moving threaded rod 506 will drive the pressure plate 505 to move downwards. The pressure plate 505 will apply downward pressure to the knives 6, thus firmly fixing the two knives 6 to both sides of the inner wall of the placement frame 501. Afterwards, the controller... 3. Start the telescopic cylinder 9. The telescopic cylinder 9 will drive the mounting block 201 to rise and fall, so that the grinding wheel 207 is in contact with the cutting edge of the tool 6. Finally, start the servo control motor 8 and the drive motor 206 at the same time. The drive motor 206 will drive the grinding wheel 207 to rotate at a high speed. The grinding wheel 207 will contact the cutting edge of the tool 6, thereby achieving the grinding effect. The servo control motor 8 will drive the bidirectional screw 203 to rotate. When the bidirectional screw 203 rotates, it will drive the threaded blocks 204 on both sides to move relative to each other or in opposite directions. The threaded blocks 204 will drive the motor mounting housing 205, the drive motor 206 and the grinding wheel 207 to move synchronously. Then, the two tools 6 can be reciprocated for grinding.
[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel dual-station grinding machine, comprising a base (1), characterized in that: The base (1) is provided with a bidirectional grinding assembly (2) on its top and a controller (3) is installed on the right side of the base (1). A support U-shaped seat (4) is fixedly connected to the front side of the base (1). A fixing component (5) is provided inside the support U-shaped seat (4). The fixing component (5) includes a placement frame (501). The bidirectional grinding assembly (2) includes a mounting block (201), the mounting block (201) has a through hole (202) inside, a bidirectional screw (203) is rotatably connected inside the through hole (202), threaded blocks (204) are threadedly connected to both sides of the surface of the bidirectional screw (203), a motor mounting housing (205) is fixedly connected to the front side of the threaded block (204), and a drive motor (206) is provided inside the motor mounting housing (205), and a grinding wheel (207) is fixedly connected to the output end of the drive motor (206).
2. The novel dual-station grinding machine according to claim 1, characterized in that: A partition plate (502) is fixedly connected to the middle of the placement frame (501), and electric push rods (503) are fixedly connected to both sides of the partition plate (502).
3. The novel dual-station grinding machine according to claim 2, characterized in that: The telescopic end of the electric push rod (503) is fixedly connected to an L-shaped frame (504), and a pressure plate (505) is provided inside the L-shaped frame (504). A cutter (6) is provided between the pressure plate (505) and the opposite side of the placement frame (501).
4. The novel dual-station grinding machine according to claim 3, characterized in that: The top of the L-shaped frame (504) is threaded with a movable threaded rod (506), and the bottom end of the movable threaded rod (506) is rotatably connected to the top of the pressure plate (505) through a bearing.
5. The novel dual-station grinding machine according to claim 1, characterized in that: A transverse limiting rod (7) is fixedly connected inside the through hole (202), and the threaded block (204) is slidably connected to the surface of the transverse limiting rod (7).
6. The novel dual-station grinding machine according to claim 1, characterized in that: A servo control motor (8) is fixedly connected to the right side of the mounting block (201). The output end of the servo control motor (8) passes through the mounting block (201) and is fixedly connected to the right end of the bidirectional screw (203).
7. The novel dual-station grinding machine according to claim 1, characterized in that: A telescopic cylinder (9) is fixedly connected to the top of the base (1), and the telescopic end of the telescopic cylinder (9) is fixedly connected to the bottom of the mounting block (201).
8. A novel dual-station grinding machine according to claim 3, characterized in that: The surface of the pressure plate (505) and the inner wall of the L-shaped frame (504) are both made of rubber.