Multi-axis linkage numerical control knife sharpening machine tool

Abstract

The invention belongs to the technical field of knife sharpening machine tools, and particularly relates to a multi-axis linkage numerical control knife sharpening machine tool which comprises a knife sharpener body, an opening and closing lower rail and an opening and closing upper rail, a middle linkage frame is fixedly installed between the opening and closing lower rail and the opening and closing upper rail, and a first groove is formed in the top of the opening and closing lower rail; a second groove is formed in the bottom of the opening and closing upper rail, opening and closing rotating shafts are rotationally installed in the first groove and the second groove correspondingly, and machine tool installation bases are fixedly installed at the ends of all the opening and closing rotating shafts correspondingly. According to the tool sharpener, after the tool sharpener body rotates to a designated position, in order to reduce loss of a driving device, a locking mechanism is adopted to restrain rotation of an opening and closing rotating shaft, a servo motor works to drive a one-way lead screw to rotate, an extension plate drives a linear pressing pipe to move till the linear pressing pipe downwards presses a locking sleeve plate, and the locking sleeve plate is locked; the locking sleeve plate slides down along the Z-axis stand column, and the compression spring is compressed, so that the locking sleeve plate is pressed on the brake disc to hinder the movement of the opening and closing rotating shaft.

Description

Technical Field

[0001] The present invention relates to a numerically controlled knife grinding machine tool, and more particularly to a multi-axis linkage numerically controlled knife grinding machine tool. Background Art

[0002] Knives and scissors are tools frequently used in our life, work and production. Enterprises involved in the production of knives and scissors will involve many processes and procedures. Among them, grinding knives and scissors to make them have blades is a very important process. At present, the main industrial equipment used by enterprises to complete the process of grinding knives and scissors is a knife and scissors grinding machine. This method of using a knife and scissors grinding machine to grind knives and scissors replaces the previous manual grinding method and can improve efficiency.

[0003] However, currently available knife and scissors grinding machines generally can only achieve two-axis linkage. For workpieces with complex machining surfaces, these knife and scissors grinding machines are difficult to complete the machining of workpieces and can only be adjusted manually; the positions for grinding knives are mostly fixed, making it difficult to machine complex workpieces, requiring frequent position switching, which is time-consuming and laborious, with low efficiency, and further increasing the production cost of enterprises.

[0004] Therefore, the present application designs a multi-axis linkage numerically controlled knife grinding machine tool. Summary of the Invention

[0005] The main object of the present disclosure is to provide a multi-axis linkage numerically controlled knife grinding machine tool to effectively solve the problems raised by the inventor in the above background art.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: A multi-axis linkage numerically controlled knife grinding machine tool includes a knife grinding machine main body, a closing and opening lower rail, and a closing and opening upper rail. A middle linkage frame is fixedly installed between the closing and opening lower rail and the closing and opening upper rail. A first groove is formed at the top of the closing and opening lower rail, and a second groove is formed at the bottom of the closing and opening upper rail. Opening and closing rotating shafts are rotatably installed in both the first groove and the second groove, and machine tool mounting seats are fixedly installed at the ends of all the opening and closing rotating shafts. The knife grinding machine main body is installed between the upper and lower machine tool mounting seats. The two knife grinding machine main bodies are respectively located on both sides of the middle linkage frame. A driving device is fixedly installed on the closing and opening upper rail, and the driving device is used to drive the opening and closing rotating shaft in the second groove to rotate by a certain angle; A locking mechanism is installed in the first groove of the closing and opening lower rail. A movable cleaning mechanism is installed on the middle linkage frame, and the movable cleaning mechanism cooperates with the locking mechanism. A clamping mechanism is provided on the machine tool mounting seat, and the clamping mechanism is used to fix the knife grinding machine main body.

[0007] Preferably, the locking mechanism includes a Z-axis column, a compression spring, and a locking sleeve plate. The Z-axis column is fixedly installed in the first groove, and the locking sleeve plate is slidably sleeved on the Z-axis column. The bottom of the locking sleeve plate is fixedly connected to the compression spring, and the bottom end of the compression spring is fixedly connected to the bottom of the first groove.

[0008] Preferably, a brake disc is fixedly installed on the opening and closing rotating shaft in the first groove, and the brake disc is rotatably installed on the bottom of the first groove. The locking sleeve plate is located above the brake disc, that is, the locking sleeve plate moves in the first groove.

[0009] Preferably, the movable cleaning mechanism includes a reciprocating slider, a unidirectional lead screw, a brush connecting seat, and a servo motor. A track is provided on the intermediate linkage frame. The reciprocating slider is slidably installed in the track on the intermediate linkage frame. The unidirectional lead screw is rotatably installed in the track, and the reciprocating slider is threadedly installed on the unidirectional lead screw. The reciprocating slider extends outside the track, and brush connecting seats are fixedly connected to both sides of the reciprocating slider. The brush connecting seats are used to install external cleaning brush devices. The servo motor is fixedly installed in the first groove, and the output end of the servo motor is fixedly connected to the unidirectional lead screw.

[0010] Preferably, the main body of the brush connecting seat is a cylindrical structure, and a threaded groove is provided on the outer side of the brush connecting seat.

[0011] Preferably, extension plates are fixedly connected to both sides of the reciprocating slider, and the extension plates are not in contact with the intermediate linkage frame. A linear pressure tube is fixedly connected to the bottom of the extension plate, and the linear pressure tube is located directly above the locking sleeve plate. The inner diameter of the linear pressure tube is larger than the outer diameter of the Z-axis column and smaller than the diameter of the locking sleeve plate.

[0012] Preferably, the clamping mechanism includes an air injection chamber, a piston cylinder, a sealing piston, a pressure rod, a clamping head, and a return spring. An annular air injection chamber is provided inside the machine tool mounting seat. At least two through holes are provided on the groove wall of the machine tool mounting seat, and piston cylinders are fixedly installed in the through holes. A sealing piston is slidably installed in the piston cylinder. One side of the sealing piston is fixedly connected to the pressure rod, and the other end of the pressure rod extends outside the piston cylinder and is fixedly connected to the clamping head. A return spring is sleeved on the part of the pressure rod located inside the piston cylinder, and the two ends of the return spring are respectively fixedly connected to the sealing piston and the inner wall of the piston cylinder. The pressure rod slidably penetrates the outside of the piston cylinder.

[0013] Preferably, an injection port is fixedly installed on the machine tool mounting seat, and a control valve is installed on the injection port. The injection port leads to the inside of the air injection chamber.

[0014] In view of this, compared with the prior art, the beneficial effects of the present invention are: (I) In the present application, a stepper motor may be selected as the driving device, that is, when the stepper motor is working, it can drive the opening and closing rotating shaft in the second groove to rotate. Since the main body of the knife sharpener is fixed between the upper and lower machine tool mounting seats, the main body of the knife sharpener can rotate accordingly, thereby changing the use position of the main body of the knife sharpener, which is suitable for processing different parts of the workpiece, and has two modes, a multi-axis linkage type and a single drive type. The multi-axis linkage type is a single drive device driving an opening and closing rotating shaft, and the multiple opening and closing rotating shafts are driven by linkage gears to maintain synchronization, while the single drive type is an opening and closing rotating shaft corresponding to each drive device, so that the CNC knife sharpening machine has more processing possibilities.

[0015] (ii) In the present application, the main body of the knife sharpener is installed by pressure difference, which is firm, stable and easy to disassemble. When installing, the control valve is opened and gas is injected into the injection chamber through the injection port to increase the pressure inside. The sealing piston in the piston cylinder moves, so that the pressure rod pushes the clamping head to move, so that the clamping heads fix the main body of the knife sharpener on the machine tool mounting seat. Similarly, when disassembling, the pressure can be released through the control valve.

[0016] (III) In the present application, when the main body of the knife sharpener rotates to the specified position, in order to reduce the loss of the driving device, a locking mechanism is used to curb the rotation of the opening and closing shaft. The servo motor works, which will drive the one-way screw to rotate, so that the extension plate drives the linear pressure tube to move until the linear pressure tube presses down the locking sleeve, and the locking sleeve will slide down along the Z-axis column, and the compression spring will be compressed, so that the locking sleeve is pressed on the brake disc to hinder the movement of the opening and closing shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure shows a structural cross-sectional view of a multi-axis linkage CNC tool sharpening machine provided by the present invention; Figure 2 Shown Figure 1 Schematic diagram of the internal structure of the middle opening and closing lower rail; Figure 3 Shown is a cross-sectional view of the machine tool mounting base; Figure 4 Shown is a schematic diagram of the structure of the intermediate linkage frame; Figure 5 Shown Figure 1 Schematic diagram of the reciprocating slider moving upward; Figure 6 Shown Figure 1 Enlarged schematic diagram of point A in the middle Figure 7 Shown is a perspective view of the brush attachment base.

[0018] icon: 1 - Grinding machine main body; 2 - Opening and closing lower rail; 201 - Z-axis column; 202 - Compression spring; 203 - Locking sleeve plate; 204 - Linear pressure pipe; 3 - Opening and closing upper rail; 4 - Intermediate linkage frame; 401 - Reciprocating slider; 402 - One-way lead screw; 403 - Brush connection seat; 404 - Servo motor; 405 - Extension plate; 5 - Opening and closing rotating shaft; 501 - Brake disc; 6 - Machine tool mounting seat; 601 - Air injection chamber; 602 - Piston cylinder; 603 - Sealing piston; 604 - Pressure rod; 605 - Clamping head; 606 - Return spring; 607 - Injection port; 608 - Control valve. Detailed implementation manner

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the protection scope of the present invention.

[0020] Please refer to Figure 1-7 , the present invention provides the following embodiments: A numerically controlled grinding machine with multi-axis linkage includes a grinding machine main body 1, an opening and closing lower rail 2, and an opening and closing upper rail 3. An intermediate linkage frame 4 is fixedly installed between the opening and closing lower rail 2 and the opening and closing upper rail 3. A first groove is opened at the top of the opening and closing lower rail 2, and a second groove is opened at the bottom of the opening and closing upper rail 3. An opening and closing rotating shaft 5 is rotatably installed in both the first groove and the second groove, and the ends of all the opening and closing rotating shafts 5 are fixedly installed with machine tool mounting seats 6. The grinding machine main body 1 is installed between the upper and lower machine tool mounting seats 6. The two grinding machine main bodies 1 are respectively located on both sides of the intermediate linkage frame 4. A driving device is fixedly installed on the opening and closing upper rail 3, and the driving device is used to drive the opening and closing rotating shaft 5 in the second groove to rotate a certain angle; A locking mechanism is installed in the first groove of the opening and closing lower rail 2. A movable cleaning mechanism is installed on the intermediate linkage frame 4, and the movable cleaning mechanism cooperates with the locking mechanism. A clamping mechanism is provided on the machine tool mounting seat 6, and the clamping mechanism is used to fix the grinding machine main body 1.

[0021] Specifically, the locking mechanism includes a Z-axis column 201, a compression spring 202, and a locking sleeve plate 203. The Z-axis column 201 is fixedly installed in the first groove, and a locking sleeve plate 203 is slidably sleeved on the Z-axis column 201. The bottom of the locking sleeve plate 203 is fixedly connected with a compression spring 202, and the bottom end of the compression spring 202 is fixedly connected to the bottom of the first groove. A brake disc 501 is fixedly installed on the opening and closing rotating shaft 5 in the first groove, and the brake disc 501 is rotatably installed at the bottom of the first groove. The locking sleeve plate 203 is located above the brake disc 501, that is, the locking sleeve plate 203 moves in the first groove.

[0022] Specifically, the movable cleaning mechanism includes a reciprocating slider 401, a unidirectional lead screw 402, a brush connecting seat 403, and a servo motor 404. A track is provided on the intermediate linkage frame 4. The reciprocating slider 401 is slidably installed in the track on the intermediate linkage frame 4. The unidirectional lead screw 402 is rotatably installed in the track, and the reciprocating slider 401 is threadedly installed on the unidirectional lead screw 402. The reciprocating slider 401 extends outside the track, and brush connecting seats 403 are fixedly connected to both sides of the reciprocating slider 401. The brush connecting seats 403 are used to install an external cleaning brush device. The servo motor 404 is fixedly installed in the first groove, and the output end of the servo motor 404 is fixedly connected to the unidirectional lead screw 402.

[0023] Specifically, the main body of the brush connecting seat 403 is of a cylindrical structure, and a threaded groove is provided on the outer side of the brush connecting seat 403.

[0024] Specifically, extension plates 405 are fixedly connected to both sides of the reciprocating slider 401, and the extension plates 405 do not contact the intermediate linkage frame 4. A linear pressure tube 204 is fixedly connected to the bottom of the extension plate 405, and the linear pressure tube 204 is located directly above the locking sleeve plate 203. The inner diameter of the linear pressure tube 204 is larger than the outer diameter of the Z-axis column 201 and smaller than the diameter of the locking sleeve plate 203.

[0025] Specifically, the clamping mechanism includes an air injection chamber 601, a piston cylinder 602, a sealing piston 603, a pressure rod 604, a clamping head 605, and a return spring 606. An annular air injection chamber 601 is provided inside the machine tool mounting seat 6. At least two through holes are provided in the groove wall of the machine tool mounting seat 6, and piston cylinders 602 are fixedly installed in the through holes. A sealing piston 603 is slidably installed in the piston cylinder 602. One side of the sealing piston 603 is fixedly connected to a pressure rod 604, and the other end of the pressure rod 604 extends outside the piston cylinder 602 and is fixedly connected to a clamping head 605. A return spring 606 is sleeved on the part of the pressure rod 604 located inside the piston cylinder 602. The two ends of the return spring 606 are respectively fixedly connected to the sealing piston 603 and the inner wall of the piston cylinder 602. The pressure rod 604 slidably penetrates the outside of the piston cylinder 602. A filling port 607 is fixedly installed on the machine tool mounting seat 6, and a control valve 608 is installed on the filling port 607. The filling port 607 leads to the inside of the air injection chamber 601.

[0026] The specific implementation of this embodiment is as follows: the driving device can use a stepper motor, that is, when the stepper motor is working, it can drive the opening and closing rotating shaft 5 in the second groove to rotate. Since the sharpening machine body 1 is fixed between the upper and lower machine tool mounting seats 6, the sharpening machine body 1 can rotate accordingly, thereby changing the use position of the sharpening machine body 1, which is suitable for processing different parts of the workpiece, and has two modes, a multi-axis linkage type and a single drive type. The multi-axis linkage type is that a single driving device drives an opening and closing rotating shaft, and multiple opening and closing rotating shafts are driven by linkage gears to maintain synchronization, while the single drive type is that each driving device corresponds to an opening and closing rotating shaft, so that the CNC sharpening machine tool has more processing possibilities; The knife sharpener body 1 is installed by pressure difference, which is firm, stable and easy to disassemble. When installing, open the control valve 608, inject gas into the injection chamber 601 through the injection port 607, increase the pressure inside, and the sealing piston 603 in the piston cylinder 602 will move, so that the pressure rod 604 pushes the clamping head 605 to move, so that the clamping heads 605 fix the knife sharpener body 1 on the machine tool mounting seat 6. Similarly, when disassembling, release the pressure through the control valve 608; When the knife sharpener body 1 rotates to the specified position, in order to reduce the loss of the driving device, a locking mechanism is used to curb the rotation of the opening and closing shaft 5, and the servo motor 404 works, which will drive the one-way screw 402 to rotate, so that the extension plate 405 drives the linear pressure tube 204 to move, until the linear pressure tube 204 presses down the locking sleeve 203, and the locking sleeve 203 slides down along the Z-axis column 201, and the compression spring 202 is compressed, so that the locking sleeve 203 presses on the brake disc 501 to hinder the movement of the opening and closing shaft 5; An external cleaning brush is threadedly connected to the threaded sleeve of the brush connecting seat 403. When the reciprocating slider 401 moves along the one-way screw rod 402, the brush connecting seat 403 will move with the cleaning brush, so that the cleaning brush can clean the waste or obstacles on the sharpener body 1, so as to achieve the purpose of keeping the table clean before processing.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A numerically controlled grinding machine tool with multi-axis linkage, characterized in that: It includes a grinding machine main body (1), a closing and opening lower rail (2), and a closing and opening upper rail (3). A middle linkage frame (4) is fixedly installed between the closing and opening lower rail (2) and the closing and opening upper rail (3). A first groove is formed at the top of the closing and opening lower rail (2), and a second groove is formed at the bottom of the closing and opening upper rail (3). Closing and opening rotating shafts (5) are rotatably installed in both the first groove and the second groove. The ends of all the closing and opening rotating shafts (5) are fixedly installed with machine tool mounting seats (6). The grinding machine main body (1) is installed between the upper and lower machine tool mounting seats (6). The two grinding machine main bodies (1) are respectively located on both sides of the middle linkage frame (4). A driving device is fixedly installed on the closing and opening upper rail (3), and the driving device is used to drive the closing and opening rotating shaft (5) in the second groove to rotate by a certain angle; A locking mechanism is installed in the first groove of the closing and opening lower rail (2). A movable cleaning mechanism is installed on the middle linkage frame (4), and the movable cleaning mechanism cooperates with the locking mechanism. A clamping mechanism is provided on the machine tool mounting seat (6), and the clamping mechanism is used to fix the grinding machine main body (1).

2. The numerically controlled knife grinding machine with multi-axis linkage according to claim 1, characterized in that: The locking mechanism includes a Z-axis column (201), a compression spring (202), and a locking sleeve plate (203). The Z-axis column (201) is fixedly installed in the first groove, and a locking sleeve plate (203) is slidably sleeved on the Z-axis column (201). The bottom of the locking sleeve plate (203) is fixedly connected with a compression spring (202), and the bottom end of the compression spring (202) is fixedly connected to the bottom of the first groove.

3. A numerically controlled knife grinding machine with multi-axis linkage according to claim 2, characterized in that: A brake disc (501) is fixedly installed on the closing and opening rotating shaft (5) in the first groove, and the brake disc (501) is rotatably installed at the bottom of the first groove. The locking sleeve plate (203) is located above the brake disc (501), that is, the locking sleeve plate (203) moves in the first groove.

4. The numerically controlled grinding machine tool with multi-axis linkage according to claim 3, wherein: The movable cleaning mechanism includes a reciprocating slider (401), a one-way lead screw (402), a brush connecting seat (403), and a servo motor (404). A track is formed on the middle linkage frame (4). The reciprocating slider (401) is slidably installed in the track on the middle linkage frame (4). The one-way lead screw (402) is rotatably installed in the track, and the reciprocating slider (401) is threadedly installed on the one-way lead screw (402). The reciprocating slider (401) extends outside the track, and brush connecting seats (403) are fixedly connected to both sides of the reciprocating slider (401). The brush connecting seat (403) is used to install an external cleaning brush device. The servo motor (404) is fixedly installed in the first groove, and the output end of the servo motor (404) is fixedly connected to the one-way lead screw (402).

5. A multi-axis linkage numerical control grinding machine tool according to claim 4, characterized in that: The main body of the brush connecting seat (403) is of a cylindrical structure, and a threaded groove is formed on the outer side of the brush connecting seat (403).

6. A multi-axis linkage numerical control grinding machine tool according to claim 4, characterized in that: Both sides of the reciprocating slider (401) are fixedly connected with extension plates (405), and the extension plates (405) are not in contact with the intermediate linkage frame (4). The bottom of the extension plate (405) is fixedly connected with a linear pressure tube (204), and the linear pressure tube (204) is located directly above the locking sleeve plate (203). The inner diameter of the linear pressure tube (204) is larger than the outer diameter of the Z-axis column (201) and smaller than the diameter of the locking sleeve plate (203).

7. The numerically controlled knife grinding machine with multi-axis linkage according to claim 6, characterized in that: The clamping mechanism includes an air injection chamber (601), a piston cylinder (602), a sealing piston (603), a pressure rod (604), a clamping head (605) and a return spring (606). An annular air injection chamber (601) is formed inside the machine tool mounting base (6). At least two through holes are formed in the groove wall of the machine tool mounting base (6), and piston cylinders (602) are fixedly installed in the through holes. A sealing piston (603) is slidably installed in the piston cylinder (602). One side of the sealing piston (603) is fixedly connected with a pressure rod (604), and the other end of the pressure rod (604) extends outside the piston cylinder (602) and is fixedly connected with a clamping head (605). A return spring (606) is sleeved on the part of the pressure rod (604) located inside the piston cylinder (602). The two ends of the return spring (606) are respectively fixedly connected to the sealing piston (603) and the inner wall of the piston cylinder (602). The pressure rod (604) slidably penetrates the outside of the piston cylinder (602).

8. A multi-axis linkage numerical control knife grinding machine according to claim 7, characterized in that: A filling port (607) is fixedly installed on the machine tool mounting base (6), and a control valve (608) is installed on the filling port (607). The filling port (607) leads to the inside of the air injection chamber (601).

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