Machine head fixing frame of tool sharpener

Abstract

The utility model relates to a tool sharpener head fixing frame which comprises a mounting plate which is of a rectangular structure, and a grinding mechanism is fixedly mounted at the upper end of the front side face of the mounting plate and used for grinding a cutting edge of a tool. The positioning mechanism is fixedly mounted at the lower end of the front side face of the mounting plate, a positioning hole is formed in the middle of the positioning mechanism, and the lower end of the polishing mechanism penetrates through the positioning hole. The telescopic mechanism is fixedly mounted in the middle of the rear side face of the mounting plate and can drive the grinding mechanism to move front and back to adapt to the cutter edge radian of the cutter. Through the linkage design of the telescopic mechanism and the positioning mechanism, the grinding mechanism can dynamically adjust the front-back movement track along with the radian of a tool edge, so that the grinding head automatically forms an arc-shaped movement path and is accurately attached to a blade curve, and the problem that the radian area is not fully machined due to traditional linear grinding is effectively solved; and the uniformity and sharpness of the blade are obviously improved.

Description

Technical Field

[0001] This application relates to the field of knife grinding machine technology, and in particular to a knife grinding machine head fixing bracket. Background Technology

[0002] In the field of tool manufacturing and regrinding, the grinding process is crucial to the precision, curvature, and sharpness of the cutting edge. Traditional grinding machines mostly use fixed grinding mechanisms, and their grinding heads typically move along a straight trajectory, making it difficult to adapt to the curved characteristics of the tool edge. This easily leads to problems such as insufficient grinding and poor uniformity in the curved areas of the cutting edge. In addition, grinding wheels wear down after long-term use, resulting in a reduction in the effective grinding length. Existing equipment lacks a fast and precise wear compensation mechanism, requiring frequent machine stops to replace grinding wheels or manual adjustments, which seriously affects processing efficiency and costs.

[0003] In existing technologies, some grinding machines attempt to adapt to the curvature of the tool by manually adjusting the position of the grinding head or adding a simple guiding mechanism. However, the adjustment process is cumbersome and relies on the operator's experience, making it difficult to guarantee repeatability and positioning accuracy. At the same time, the tool is prone to slight deviation, leading to grinding errors, or even over-grinding or under-grinding.

[0004] Therefore, there is an urgent need for a grinding machine mounting structure that can automatically adapt to the curvature of the cutting edge, achieve dynamic arc-shaped trajectory grinding, and have real-time wear compensation function, so as to improve grinding accuracy, efficiency and equipment service life. Utility Model Content

[0005] In order to solve the problems existing in the background art, this utility model proposes a grinding machine head fixing bracket.

[0006] The grinding machine head fixing bracket provided in this application adopts the following technical solution:

[0007] A grinding machine head mounting bracket includes a mounting plate with a rectangular structure, a grinding mechanism fixedly mounted on the upper front side of the mounting plate for grinding the cutting edge of a tool, a positioning mechanism fixedly mounted on the lower front side of the mounting plate with a positioning hole in the middle, through which the lower end of the grinding mechanism passes, and a telescopic mechanism fixedly mounted on the middle rear side of the mounting plate for moving the grinding mechanism back and forth to accommodate the curvature of the cutting edge of the tool.

[0008] Furthermore, the grinding mechanism includes a fixed frame, a movable frame, a compensating component, a drive motor, a rotating shaft, and a grinding head. The fixed frame is fixedly mounted on the upper front side of the mounting plate by screws. The movable frame is arranged above the fixed frame. The fixed frame and the movable frame are connected by the compensating component. The fixed frame and the movable frame have hollow internal structures. The drive motor is fixedly mounted inside the fixed frame and the movable frame. The rotating shaft is mounted on the output shaft of the drive motor through a coupling. The grinding head is fixedly mounted on the lower end of the rotating shaft.

[0009] Furthermore, both the fixed frame and the movable frame are provided with openings, and locking screws for adjusting the openings are installed on the fixed frame and the movable frame.

[0010] Furthermore, the compensation component includes a positioning pin and an adjusting screw. The fixed frame and the movable frame are evenly arranged with through holes. A positioning pin is movably disposed between two through holes arranged opposite each other. An adjusting screw is mounted on the movable frame via a bearing. The fixed frame is provided with a threaded hole that mates with the adjusting screw.

[0011] Furthermore, the positioning mechanism includes a positioning frame, a bearing guide tube, and a limiting pressure block. The positioning frame is fixedly installed on the lower end of the front side of the mounting plate. A connecting hole is opened in the middle of the positioning frame. Bearing guide tubes are symmetrically installed on the rear side of the lower end of the positioning frame. Limiting pressure blocks are symmetrically installed on the front side of the lower end of the positioning frame.

[0012] Furthermore, the telescopic mechanism includes a slider, a slide rail, a telescopic spring, and a fixing plate. A slider is provided on the rear side of the mounting plate. A sliding groove is symmetrically opened on the slider. A slide rail is slidably arranged in the sliding groove. A telescopic spring is installed between the slide rail and the slider. A fixing plate is fixedly installed between the front ends of the two slide rails. The fixing plate is fixedly installed on the rear side of the mounting plate by screws.

[0013] Furthermore, a reinforcing plate is also installed between the fixing plate and the mounting plate.

[0014] Beneficial effects

[0015] Compared with the prior art, the present invention provides a grinding machine head fixing bracket, which has the following beneficial effects:

[0016] 1. This utility model, through the linkage design of the telescopic mechanism and the positioning mechanism, allows the grinding mechanism to dynamically adjust its forward and backward movement trajectory according to the curvature of the cutting edge, so that the grinding head automatically forms an arc-shaped movement path, accurately conforming to the curve of the cutting edge, effectively solving the problem of insufficient processing of the arc area caused by traditional straight-line grinding, and significantly improving the uniformity and sharpness of the cutting edge.

[0017] 2. In this utility model, the compensation component adopts a combination structure of adjusting screw and positioning pin. The vertical height of the grinding head can be quickly adjusted by rotating the adjusting screw to compensate for the wear of the grinding wheel. This design eliminates the need to disassemble or replace the grinding wheel, extends the service life of the grinding head, and reduces equipment maintenance costs.

[0018] 3. In this utility model, the positioning mechanism makes rolling contact with the blade through the bearing guide tube, and with the upper and lower limit functions of the limiting pressure block, the tool is fixed in both directions to avoid tool deviation during grinding; the telescopic spring provides elastic restoring force to ensure that the grinding head is always in close contact with the blade, eliminating over-grinding or under-grinding. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is the first three-dimensional structural schematic diagram of this application.

[0021] Figure 2 This is a three-dimensional structural diagram of the grinding mechanism and the positioning mechanism in this application.

[0022] Figure 3 This is a schematic diagram of the second three-dimensional structure of this application.

[0023] Figure 4 This is the bottom view of this application.

[0024] Figure 5 This is a schematic diagram of the grinding state of the cutting tool in this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Mounting plate; 2. Grinding mechanism; 21. Fixed frame; 22. Moving frame; 23. Compensating component; 24. Drive motor; 25. Rotating shaft; 26. Grinding head; 231. Positioning pin; 232. Adjusting screw; 3. Positioning mechanism; 31. Positioning frame; 32. Bearing guide tube; 33. Limiting block; 4. Telescopic mechanism; 41. Slider; 42. Slide rail; 43. Telescopic spring; 44. Fixed plate; 441. Reinforcing plate. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5The present invention provides a grinding machine head fixing bracket, including a mounting plate 1, which has a rectangular structure; a grinding mechanism 2, which is fixedly installed on the upper front side of the mounting plate 1, and is used to grind the cutting edge of the tool; a positioning mechanism 3, which is fixedly installed on the lower front side of the mounting plate 1, and has a positioning hole in the middle, through which the lower end of the grinding mechanism 2 passes; and a telescopic mechanism 4, which is fixedly installed on the middle rear side of the mounting plate 1, and can drive the grinding mechanism 2 to move back and forth to adapt to the curvature of the cutting edge of the tool.

[0028] In the above technical solution, the tool to be sharpened is placed on the clamping mold, the positioning mechanism 3 positions the tool, the sharpening mechanism 2 sharpens the tool to form the cutting edge, and the telescopic mechanism 4 drives the sharpening mechanism 2 to move back and forth, so that the trajectory of the sharpening mechanism 2 during reciprocating motion is an arc-shaped trajectory, which can adapt to the curvature of the cutting edge of the tool and avoid the phenomenon that the traditional sharpening head only moves in a straight line, resulting in insufficient sharpening of the cutting edge curvature.

[0029] See Figures 1-2 As shown, in this preferred embodiment, the grinding mechanism 2 includes a fixed frame 21, a movable frame 22, a compensating member 23, a drive motor 24, a rotating shaft 25, and a grinding head 26. The fixed frame 21 is fixedly installed on the upper front side of the mounting plate 1 by screws. The movable frame 22 is arranged above the fixed frame 21. The fixed frame 21 and the movable frame 22 are connected by the compensating member 23. The fixed frame 21 and the movable frame 22 are hollow inside. The drive motor 24 is fixedly installed between the fixed frame 21 and the movable frame 22. The rotating shaft 25 is installed on the output shaft of the drive motor 24 by a coupling. The grinding head 26 is fixedly installed at the lower end of the rotating shaft 25. The grinding head 26 is a grinding wheel grinding head.

[0030] See Figures 1-2 As shown, in this preferred embodiment, both the fixed frame 21 and the movable frame 22 are provided with openings, and locking screws for adjusting the openings are installed on the fixed frame 21 and the movable frame 22.

[0031] In the above technical solution, when the tool is being polished, the drive motor 24 drives the polishing head 26 to rotate at high speed through the rotating shaft 25. The polishing head 26 then polishes the tool. When the polishing head 26 wears out after long-term use, the locking screws on the fixed frame 21 are first loosened. Then, the compensation component 23 is manually adjusted to shorten the distance between the fixed frame 21 and the moving frame 22. The drive motor 24 and the polishing head 26 then descend, thereby solving the problem of wear compensation.

[0032] When the compensation component 23 is adjusted so that the drive motor 24 and the grinding head 26 move upward, the distance between the fixed frame 21 and the moving frame 22 increases, thereby enabling the grinding head 26 to compensate for the grinding of the blade.

[0033] See Figures 1-2 As shown, as a preferred technical solution of this embodiment, the compensation component 23 includes a positioning pin 231 and an adjusting screw 232. The fixed frame 21 and the movable frame 22 are evenly arranged with through holes. The positioning pin 231 is movably arranged between two through holes arranged opposite to each other. The adjusting screw 232 is installed on the movable frame 22 through a bearing. The fixed frame 21 is provided with a threaded hole that cooperates with the adjusting screw 232.

[0034] In the above technical solution, the positioning pin 231 plays a guiding and limiting role. Multiple positioning pins 231 are provided. The positioning pins 231 can ensure that the drive motor 24 does not deviate when it moves up and down, thus ensuring the grinding accuracy of the tool.

[0035] See Figures 1-2 As shown, as a preferred technical solution of this embodiment, the positioning mechanism 3 includes a positioning frame 31, a bearing guide tube 32, and a limiting pressure block 33. The positioning frame 31 is fixedly installed on the lower end of the front side of the mounting plate 1. A connecting hole is opened in the middle of the positioning frame 31. The bearing guide tube 32 is symmetrically installed on the rear side of the lower end of the positioning frame 31. The limiting pressure block 33 is symmetrically installed on the front side of the lower end of the positioning frame 31.

[0036] In the above technical solution, the bearing guide 32 contacts the cutting edge of the tool. During the grinding process, due to the outward convexity of the cutting edge, the bearing guide 32 can press and extend back and forth along with the cutting edge curvature of the tool to compress the telescopic mechanism 4. The bearing guide 32 is always in close contact with the cutting edge of the tool during the extension and retraction, ensuring the accuracy of the tool grinding.

[0037] The limiting block 33 contacts the upper surface of the tool. The limiting block 33 can limit the upper surface of the tool, which can prevent the tool from being over-grinded and also prevent the tool from being under-grinded.

[0038] See Figures 3-5 As shown, as a preferred technical solution of this embodiment, the telescopic mechanism 4 includes a slider 41, a slide rail 42, a telescopic spring 43, and a fixing plate 44. The slider 41 is provided on the rear side of the mounting plate 1. The slider 41 has symmetrical sliding grooves. The slide rail 42 is slidably arranged in the sliding groove. The telescopic spring 43 is installed between the slide rail 42 and the slider 41. The fixing plate 44 is fixedly installed between the front ends of the two slide rails 42. The fixing plate 44 is fixedly installed on the rear side of the mounting plate 1 by screws.

[0039] See Figure 4As shown, as a preferred technical solution in this embodiment, a reinforcing plate 441 is also installed between the fixing plate 44 and the mounting plate 1.

[0040] In the above technical solution, the telescopic mechanism 4 is used in conjunction with the bearing guide tube 32. When the bearing guide tube 32 moves along with the blade, the curvature of the blade can drive the slide rail 42 to slide inside the sliding groove, which in turn can drive the grinding mechanism 2 to shift as a whole. This allows for adaptive adjustment based on the curvature of the blade, meeting the grinding needs of various tools.

[0041] The working principle of this utility model is as follows:

[0042] S1: Tool positioning and fixing

[0043] The tool to be sharpened is placed on the clamping mold, and the upper surface of the tool is pressed by the limiting pressure block 33 of the positioning mechanism 3 to restrict its vertical displacement. At the same time, the cutting edge of the tool is in close contact with the bearing guide tube 32. The rolling characteristics of the bearing guide tube 32 allow it to move freely along the arc of the cutting edge. With the elastic extension and retraction of the telescopic mechanism 4, the tool is ensured to maintain accurate positioning during the sharpening process.

[0044] S2: Dynamic Arc Trajectory Generation and Refinement

[0045] The drive motor 24 is started to drive the grinding head 26 to rotate at high speed. During the grinding process, the curvature of the blade edge forces the bearing guide tube 32 to move laterally, pushing the slide rail 42 of the telescopic mechanism 4 to slide along the slider 41 and compressing the telescopic spring 43. This action is linked to the mounting plate 1 and the grinding mechanism 2 to move back and forth, so that the grinding head 26 automatically adapts to the curvature of the blade edge and forms an arc-shaped motion trajectory to achieve uniform grinding.

[0046] S3: Real-time wear compensation adjustment

[0047] When the effective length of the grinding head 26 decreases due to wear, the locking screw of the fixed bracket 21 is loosened, and the adjusting screw 232 of the compensation component 23 is rotated. Through threaded transmission, the moving bracket 22 moves downward relative to the fixed bracket 21, driving the drive motor 24 to descend synchronously with the grinding head 26, restoring the working height of the grinding wheel. The positioning pin 231 ensures no deviation during the movement process, guaranteeing compensation accuracy.

[0048] S4: Multi-condition adaptive adjustment

[0049] For different cutting edge curvatures of cutting tools, the telescopic spring 43 of the telescopic mechanism 4 provides elastic restoring force, so that the bearing guide tube 32 always fits the cutting edge curve, meeting the grinding needs of diverse cutting tools; the reinforcing plate 441 enhances the rigidity of the fixing plate 44, ensuring the stability of the mechanism.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A head fixing bracket for a knife grinding machine, characterized in that, include: Mounting plate (1), which has a rectangular structure; The grinding mechanism (2) is fixedly installed on the upper front side of the mounting plate (1). The grinding mechanism (2) is used to grind the cutting edge of the tool. The positioning mechanism (3) is fixedly installed on the lower end of the front side of the mounting plate (1). The positioning mechanism (3) has a positioning hole in the middle, and the lower end of the grinding mechanism (2) passes through the positioning hole. The telescopic mechanism (4) is fixedly installed in the middle of the rear side of the mounting plate (1). The telescopic mechanism (4) can drive the grinding mechanism (2) to move back and forth to adapt to the curvature of the cutting edge of the tool.

2. The head fixing bracket of a grinding machine according to claim 1, characterized in that: The grinding mechanism (2) includes a fixed frame (21), a movable frame (22), a compensating member (23), a drive motor (24), a rotating shaft (25), and a grinding head (26). The fixed frame (21) is fixedly installed on the upper front side of the mounting plate (1) by screws. The movable frame (22) is arranged above the fixed frame (21). The fixed frame (21) and the movable frame (22) are connected by the compensating member (23). The fixed frame (21) and the movable frame (22) are hollow inside. The drive motor (24) is fixedly installed between the fixed frame (21) and the movable frame (22). The rotating shaft (25) is installed on the output shaft of the drive motor (24) by a coupling. The grinding head (26) is fixedly installed at the lower end of the rotating shaft (25).

3. The head fixing bracket of a knife grinding machine according to claim 2, characterized in that: Both the fixed frame (21) and the movable frame (22) are provided with openings, and locking screws for adjusting the openings are installed on the fixed frame (21) and the movable frame (22).

4. The head fixing bracket of a grinding machine according to claim 3, characterized in that: The compensation component (23) includes a positioning pin (231) and an adjusting screw (232). The fixed frame (21) and the movable frame (22) are evenly arranged with through holes. The positioning pin (231) is movably arranged between two through holes arranged opposite to each other. The adjusting screw (232) is installed on the movable frame (22) through a bearing. The fixed frame (21) is provided with a threaded hole that mates with the adjusting screw (232).

5. A grinding machine head fixing bracket according to claim 1, characterized in that: The positioning mechanism (3) includes a positioning frame (31), a bearing guide tube (32), and a limiting pressure block (33). The positioning frame (31) is fixedly installed on the lower end of the front side of the mounting plate (1). A connecting hole is opened in the middle of the positioning frame (31). The bearing guide tube (32) is symmetrically installed on the rear side of the lower end of the positioning frame (31). The limiting pressure block (33) is symmetrically installed on the front side of the lower end of the positioning frame (31).

6. The head fixing bracket of a knife grinding machine according to claim 1, characterized in that: The telescopic mechanism (4) includes a slider (41), a slide rail (42), a telescopic spring (43), and a fixing plate (44). The slider (41) is provided on the rear side of the mounting plate (1). The slider (41) has symmetrical sliding grooves. The slide rail (42) is slidably arranged in the sliding groove. The telescopic spring (43) is installed between the slide rail (42) and the slider (41). The fixing plate (44) is fixedly installed between the front ends of the two slide rails (42). The fixing plate (44) is fixedly installed on the rear side of the mounting plate (1) by screws.

7. A grinding machine head fixing bracket according to claim 6, characterized in that: A reinforcing plate (441) is also installed between the fixing plate (44) and the mounting plate (1).

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