Grinding wheel feeding device for grinding straight-opening blade

Abstract

The invention relates to the technical field of blade production, in particular to a grinding wheel feeding device for grinding a straight-opening cutting edge, which comprises a box body, a first eccentric shaft, a second eccentric shaft and a swing arm assembly, the first end part is in sliding connection with the first eccentric part so as to convert rotation of the first eccentric shaft into displacement of the swing arm assembly in the X-axis direction, and the second end part is in rotating connection with the second eccentric part so as to adjust displacement of the swing arm assembly in the Y-axis direction through rotation of the second eccentric part; displacement of the swing arm assembly in the X-axis direction is adjusted through sliding fit of the first eccentric shaft and the first end of the swing arm assembly, displacement of the swing arm assembly in the Y-axis direction is adjusted through fit of the second eccentric shaft and the second end of the swing arm assembly, and therefore rapid adjustment of a grinding wheel in the X-axis position and the Y-axis position is achieved, the grinding efficiency is improved, and the grinding precision is improved. And the position adjustment is accurate, and the loss of grinding materials during grinding is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of blade production, in particular to a grinding wheel feeding device for straight blade grinding. Background Art

[0002] With the continuous upgrading of the manufacturing industry, the requirements for processing accuracy and efficiency are constantly increasing. Blade grinding, as a key link in improving tool performance, plays an increasingly important role. High-quality blades are directly related to the accuracy and surface quality of the workpiece, affecting the final performance and service life of the product.

[0003] A knife sharpener is a mechanical device used to sharpen various knives and is widely used in manufacturing and daily life. Early knife sharpeners were mostly single-degree-of-freedom mechanisms that used belt drive, which not only had low grinding efficiency and precision, but also resulted in large material losses during the grinding process. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problems of low grinding efficiency, low precision and large material loss in the grinding process of the knife grinder in the prior art, a grinding wheel feeding device for straight blade grinding is provided.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: A grinding wheel feeding device for straight blade grinding comprises: Box; A first eccentric shaft comprises a first shaft body rotatably mounted in the housing and a first eccentric portion extending out of the housing, wherein a central axis of the first eccentric portion deviates from a central axis of the first shaft body; The second eccentric shaft comprises a second shaft body rotatably mounted in the housing and a second eccentric portion extending out of the housing, wherein the central axis of the second eccentric portion deviates from the central axis of the second shaft body; And a swing arm assembly, a grinding wheel shaft is installed on its third end, the first end is slidably connected to the first eccentric part to convert the rotation of the first eccentric shaft into the displacement of the swing arm assembly in the X-axis direction, and the second end is rotationally connected to the second eccentric part to adjust the displacement of the swing arm assembly in the Y-axis direction through the rotation of the second eccentric part.

[0006] Furthermore, a sliding block is sleeved on the first eccentric portion, and a sliding groove for sliding the sliding block is formed at the first end of the swing arm.

[0007] Furthermore, the number of the first eccentric shaft, the second eccentric shaft and the swing arm assembly are two, and the three correspond to each other one by one.

[0008] Furthermore, the first eccentric shaft protrudes radially along the middle portion in the axial direction to form a mounting portion for mounting the transmission mechanism, and the mounting portion is provided with a fixing groove for circumferentially fixing the transmission mechanism.

[0009] Furthermore, a gasket is provided between the inner wall of the slide groove and the outer wall of the slider, and the gasket is made of tool steel.

[0010] Furthermore, the box body is respectively provided with a first mounting groove and a second mounting groove for installing the first shaft body and the second shaft body, the first mounting groove includes a first recessed portion formed to cooperate with the clearance of the outer peripheral wall of the first eccentric shaft, and the second mounting groove includes a second recessed portion formed to cooperate with the clearance of the outer peripheral wall of the second eccentric shaft.

[0011] Furthermore, each swing arm assembly includes a front swing arm and a rear swing arm swingably arranged on both sides of the box along the Z-axis direction, and the front swing arm and the rear swing arm each include an arm body and an arm cover arranged on the arm body, and the two are combined to form a third mounting groove for installing the grinding wheel shaft.

[0012] Furthermore, the box body includes a base and an upper cover that are fixedly connected, and the two enclose an installation cavity for installing the transmission mechanism and the above-mentioned first installation groove, and the second installation groove is located inside the base.

[0013] Furthermore, a positioning hole for positioning the scale plate is formed at the end of the first eccentric portion.

[0014] Beneficial effects of the present invention: The present invention utilizes the sliding cooperation between the first eccentric shaft and the first end of the swing arm assembly to adjust the displacement of the swing arm assembly in the X-axis direction, and utilizes the cooperation between the second eccentric shaft and the second end of the swing arm assembly to adjust the displacement of the swing arm assembly in the Y-axis direction, thereby realizing rapid adjustment of the grinding wheel on the X-axis and Y-axis positions, improving the grinding efficiency, and accurately adjusting the position, reducing the loss of grinding materials during grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 is a three-dimensional schematic diagram of the present invention; Figure 2 is a top view of the present invention; Figure 3 It is the gaze diagram of the present invention; Figure 4 yes Figure 3 Sectional view in the AA direction; Figure 5 yes Figure 3 Cross-sectional view in the BB direction; Figure 6 It is a three-dimensional picture of the swing arm assembly from the first perspective; Figure 7 is a three-dimensional diagram of the swing arm assembly from the second perspective; Figure 8It is a split diagram of the present invention; Fig. 9 This is a split diagram of the swing arm assembly; Fig.10 is a three-dimensional schematic diagram of the first eccentric shaft; Fig.11 It is a three-dimensional schematic diagram of the second eccentric shaft.

[0017] In the figure: 1. Box body; 101. Base; 102. Upper cover; 103. First mounting groove; 1031. First recessed portion; 104. Second mounting groove; 1041. Second recessed portion; 2. first eccentric shaft; 201. first shaft body; 202. first eccentric portion; 203. mounting portion; 2031. fixing groove; 3. second eccentric shaft; 301. second shaft body; 302. second eccentric part; 3021. positioning hole; 4. Swing arm assembly; 401. first end; 402. second end; 403. third end; 404. slideway; 405. front swing arm; 406. rear swing arm; 407. third mounting slot; 408. arm body; 409. arm cover; 5. Slider; 6. Pad. DETAILED DESCRIPTION

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner only, and therefore only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0019] like Figure 1-Figure 3 As shown, a grinding wheel feeding device for straight blade grinding comprises: Box 1; The first eccentric shaft 2 comprises a first shaft body 201 rotatably mounted in the housing 1 and a first eccentric portion 202 extending out of the housing 1, wherein the first eccentric portion 202 is located at an end of the first shaft body 201 along its axial direction, and a central axis of the first eccentric portion 202 deviates from a central axis of the first shaft body 201; The second eccentric shaft 3 comprises a second shaft body 301 rotatably mounted in the housing 1 and a second eccentric portion 302 extending out of the housing 1, wherein the second eccentric portion 302 is located at an end of the second shaft body 301 along its axial direction, and a central axis of the second eccentric portion 302 deviates from a central axis of the second shaft body 301; And a swing arm assembly 4, a grinding wheel shaft is installed on its third end 403, and a grinding wheel for grinding the blade is installed on the grinding wheel shaft, the first end 401 is slidably connected with the first eccentric part 202 to convert the rotation of the first eccentric shaft 2 into the displacement of the swing arm assembly 4 in the X-axis direction, the second end 402 is rotatably connected with the second eccentric part 302 to adjust the displacement of the swing arm assembly 4 on the Y-axis by rotating the second eccentric part 302, the swing arm assembly 4 is roughly a triangular structure, the three ends are respectively located at the three corners of the triangle, and the second end 402 is roughly located below the third end 403 so that the position of the grinding wheel shaft in the Y-axis direction can be adjusted by the second eccentric shaft 3, the first end 401 is located on the side of the second end 402 so that the position of the grinding wheel shaft in the X-axis direction can be adjusted by the first eccentric shaft 2.

[0020] During adjustment, first, the second eccentric shaft 3 is kept stationary, and the first eccentric shaft 2 is rotated. The first eccentric part 202 rotates synchronously to produce deflection and slides with the first end part 401 of the swing arm assembly 4, and the swing arm assembly 4 produces a displacement in the X-axis direction, thereby driving the grinding wheel shaft and the grinding wheel thereon to reach the position of the required grinding position in the X-axis direction; then the second eccentric shaft 3 is rotated, the second eccentric part 302 rotates synchronously to produce deflection and cooperates with the second end part 402 of the swing arm assembly 4 to make the swing arm assembly 4 produce a displacement in the Y-axis direction, thereby driving the grinding wheel shaft and the grinding wheel thereon to reach the grinding position in the Y-axis direction, and then the second eccentric shaft 3 is fixed. At this time, the device adjustment is completed, and finally the blade is transported along the Z-axis direction, and the grinding wheel rotates for grinding.

[0021] In some examples, such as Figure 1 , Figure 6 and Figure 7 As shown, a slider 5 is sleeved on the first eccentric portion 202, and a slide groove 404 is provided at the first end portion 401 of the swing arm assembly 4 for the slider 5 to slide. Both the slider 5 and the slide groove 404 are square structures. When the first eccentric shaft 2 is rotated, the first eccentric portion 202 rotates synchronously around the center line of the first shaft body 201 to generate deflection. Due to the cooperation between the slider 5 and the slide groove 404, the swing arm assembly 4 generates displacement in the X-axis direction.

[0022] In some examples, such as Figure 1-Figure 3 As shown, the first eccentric shaft 2, the second eccentric shaft 3 and the swing arm assembly 4 are each in two groups, which are respectively used to adjust the positions of the two groups of grinding wheel shafts, and the three correspond to each other one by one.

[0023] In some examples, such as Fig.10As shown, the first eccentric shaft 2 protrudes radially along the middle part of its axial direction to form a mounting portion 203 for mounting the transmission mechanism. The transmission mechanism can be a worm gear structure, and the mounting portion 203 is provided with a fixing groove 2031 for circumferentially fixing the transmission mechanism. The number of the fixing groove 2031 can be but is not limited to two. Screws are screwed into the mounting holes on the transmission mechanism and the fixing grooves 2031 of the mounting portion 203 in sequence to fix the transmission mechanism.

[0024] In some examples, such as Fig. 9 As shown, a liner 6 is provided between the inner wall of the slide groove 404 and the outer wall of the slider 5. The liner 6 is made of tool steel and has high wear resistance. During the rotation of the first eccentric shaft 2, the slider 5 sleeved on the outside of the first eccentric part 202 reciprocates in the slide groove 404 on the swing arm assembly 4, and friction occurs between the two. By providing a liner 6 made of tool steel between the two, the wear on the swing arm assembly 4 can be reduced, thereby increasing the service life of the entire device.

[0025] In some examples, such as Figure 4 and Figure 5 As shown, the box body 1 is respectively provided with a first mounting groove 103 and a second mounting groove 104 for installing the first shaft body 201 and the second shaft body 301. The first mounting groove 103 includes a first recessed portion 1031 which is recessed to cooperate with the outer wall clearance of the first eccentric shaft 2. In this embodiment, the first recessed portion 1031 is located in the middle of the first mounting groove 103. The second mounting groove 104 includes a second recessed portion 1041 which is recessed to cooperate with the outer wall clearance of the second eccentric shaft 3. In this embodiment, the second recessed portion 1041 is located at both ends of the second mounting groove 104. Through the arrangement of the first recessed portion 1031 and the second recessed portion 1041, it can be ensured that the hole axis has good concentricity and coaxiality and is easy to disassemble and assemble.

[0026] In some examples, such as Figure 1 , Figure 6 and Figure 7 As shown, each swing arm assembly 4 includes a front swing arm 405 and a rear swing arm 406 which are swingably arranged on both sides of the box body 1 along the Z-axis direction. The thickness of the front swing arm 405 along the Z-axis direction is greater than the thickness of the rear swing arm 406 along the Z-axis direction. The front swing arm 405 and the rear swing arm 406 both include an arm body 408 and an arm cover 409 covering the arm body 408. The arm body 408 and the arm cover 409 are fixed by bolts, and the two are enclosed to form a third mounting groove 407 for mounting the grinding wheel shaft.

[0027] In some examples, such as Figure 8As shown, the box body 1 includes a base 101 and an upper cover 102 which are fixedly connected, the two are fixed by bolts, and enclose to form the above-mentioned first installation groove 103, and the second installation groove 104 is located inside the base 101.

[0028] In some examples, such as Fig.11 As shown, a positioning hole 3021 for positioning the dial is opened at the end of the first eccentric portion 202. The dial is mounted on the second eccentric shaft 3 through the positioning hole 3021. The rotation angle of the second eccentric shaft 3 can be accurately adjusted through the dial.

[0029] Working principle: During adjustment, first, the second eccentric shaft 3 is kept stationary, and the first eccentric shaft 2 is rotated, so that the first eccentric part 202 rotates synchronously to produce deflection, and the slider 5 mounted thereon slides with the slide groove 404 in the first end 401 of the swing arm assembly 4, so that the swing arm assembly 4 produces displacement in the X-axis direction, thereby driving the grinding wheel shaft and the grinding wheel thereon to reach the position of the required grinding position in the X-axis direction; then the second eccentric shaft 3 is rotated, and the second eccentric part 302 rotates synchronously to produce deflection and cooperates with the second end 402 of the swing arm assembly 4 to cause the swing arm assembly 4 to produce displacement in the Y-axis direction, thereby driving the grinding wheel shaft and the grinding wheel thereon to reach the grinding position in the Y-axis direction, and then the second eccentric shaft 3 is fixed. At this time, the device adjustment is completed, and finally the blade is transported along the Z-axis direction, and the grinding wheel rotates for grinding.

[0030] Based on the above ideal embodiments of the present invention, and through the above description, relevant staff can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A grinding wheel feeding device for straight blade grinding, comprising: Box (1); A first eccentric shaft (2) comprises a first shaft body (201) rotatably mounted in the housing (1) and a first eccentric portion (202) extending out of the housing (1), wherein a central axis of the first eccentric portion (202) deviates from a central axis of the first shaft body (201); The second eccentric shaft (3) comprises a second shaft body (301) rotatably mounted in the housing (1) and a second eccentric portion (302) extending out of the housing (1), wherein the central axis of the second eccentric portion (302) deviates from the central axis of the second shaft body (301); and a swing arm assembly (4), wherein a grinding wheel shaft is mounted on the third end portion (403), the first end portion (401) is slidably connected to the first eccentric portion (202) so as to convert the rotation of the first eccentric shaft (2) into the displacement of the swing arm assembly (4) in the X-axis direction, and the second end portion (402) is rotatably connected to the second eccentric portion (302) so as to adjust the displacement of the swing arm assembly (4) in the Y-axis direction through the rotation of the second eccentric portion (302).

2. A grinding wheel feeding device for straight blade grinding according to claim 1, characterized in that: A sliding block (5) is sleeved on the outside of the first eccentric portion (202), and a sliding groove (404) for the sliding block (5) to slide is formed at the first end portion (401) of the swing arm.

3. A grinding wheel feeding device for straight blade grinding according to claim 1, characterized in that: The first eccentric shaft (2), the second eccentric shaft (3) and the swing arm assembly (4) are each provided in two sets, and the three correspond to each other one by one.

4. A grinding wheel feeding device for straight blade grinding according to claim 1, characterized in that: The first eccentric shaft (2) protrudes radially along its axial middle portion to form a mounting portion (203) for mounting a transmission mechanism, and the mounting portion (203) is provided with a fixing groove (2031) for circumferentially fixing the transmission mechanism.

5. A grinding wheel feeding device for straight blade grinding according to claim 2, characterized in that: A liner (6) is provided between the inner wall of the slide groove (404) and the outer wall of the slide block (5), and the liner (6) is made of tool steel.

6. A grinding wheel feeding device for straight blade grinding according to claim 4, characterized in that: The box body (1) is respectively provided with a first mounting groove (103) and a second mounting groove (104) for mounting the first shaft body (201) and the second shaft body (301), wherein the first mounting groove (103) comprises a first recessed portion (1031) which is recessed and loosely matches the outer peripheral wall of the first eccentric shaft (2), and the second mounting groove (104) comprises a second recessed portion (1041) which is recessed and loosely matches the outer peripheral wall of the second eccentric shaft (3).

7. A grinding wheel feeding device for straight blade grinding according to claim 1, characterized in that: Each swing arm assembly (4) comprises a front swing arm (405) and a rear swing arm (406) swingably arranged on both sides of the box body (1) along the Z-axis direction, and the front swing arm (405) and the rear swing arm (406) each comprise an arm body (408) and an arm cover (409) covered on the arm body (408), the two together enclose a third installation groove (407) for installing a grinding wheel shaft.

8. A grinding wheel feeding device for straight blade grinding according to claim 6, characterized in that: The box body (1) comprises a base (101) and an upper cover (102) which are fixedly connected, and the two enclose a mounting cavity for mounting the transmission mechanism and the first mounting groove (103), and the second mounting groove (104) is located inside the base (101).

9. A grinding wheel feeding device for straight blade grinding according to claim 1, characterized in that: A positioning hole (3021) for positioning the scale plate is provided at the end of the second eccentric portion (302).

Images