Blade grinding fixture and blade grinder

Abstract

The present invention relates to a blade grinding fixture and a blade grinder. The blade grinding fixture includes a tool rod. The tool rod includes a tool rod body, a pressure plate and a fastener. The tool rod body includes a first positioning bottom and a first positioning side. The blade is positioned by the two reference parts of the first positioning bottom and the first positioning side, effectively ensuring the consistency of the blade clamping. The pressure plate includes a first end and a second end. The first end fixes the tool rod body, and the two ends are arranged opposite to the first positioning bottom. The fastener is used to lock and fix the pressure plate to the tool rod body so that the second end of the pressure plate presses the blade. The first end of the pressure plate is fixed to the tool rod body. During the blade locking process, the pressure plate only moves in the up and down directions to press the blade, avoiding the problem of angular displacement of the blade caused by the rotation of the pressure plate. The clamping accuracy of the blade can be guaranteed to be within a certain tolerance range, ensuring the consistency of the blade clamping angle. In this way, the accuracy of the blade grinding angle and the grinding efficiency can be improved by using this blade grinding fixture.

Description

Technical Field

[0001] The present invention relates to the technical field of blade processing, in particular to a blade grinding fixture and a blade grinding machine. Background Art

[0002] Machining cylinder head valve seats is a challenging task in automotive engine manufacturing, typically requiring multi-angle valve inserts. Because cylinder head valve seats are often made from difficult-to-machine powder metallurgy materials, machining requires high precision and consumes a large number of inserts. To reduce processing costs, valve inserts must be reground after use. During this process, the correct grinding angle of the inserts must be strictly adhered to.

[0003] During the grinding process, a grinding fixture is often used to clamp the valve blade and grind it on a blade grinder. However, conventional grinding fixtures have poor clamping accuracy, poor consistency in blade grinding angles, and a low pass rate for valve blade grinding. Summary of the Invention

[0004] Based on this, it is necessary to provide a blade grinding fixture and a blade grinder, which can ensure the consistency of the blade grinding angle and improve the qualified rate of blade grinding.

[0005] A blade grinding fixture includes a tool bar, wherein the tool bar includes:

[0006] A blade rod body, the blade rod body comprising a first positioning bottom portion for tightly contacting the bottom portion of the blade and a first positioning side portion for tightly contacting the side portion of the blade, the first positioning bottom portion and the first positioning side portion forming a blade slot;

[0007] A pressure plate, the pressure plate being disposed on at least a portion of the top surface of the knife bar body; the pressure plate comprising a first end and a second end, the first end being fixed to the knife bar body, and the second end being disposed opposite to the first positioning bottom; and

[0008] A fastener is capable of locking and fixing the pressure plate to the knife bar body, so that the second end of the pressure plate presses the blade.

[0009] In one embodiment, a first avoidance groove is provided at the junction of the first positioning bottom and the first positioning side, and the first avoidance groove is recessed in a direction away from the blade groove; the first avoidance groove is provided with a notch, and the notch is provided at the first positioning side.

[0010] In one embodiment, a second air-avoidance groove is provided between the bottom of the pressure plate and the top of the knife rod body; the pressure plate is elastic, and at least part of the pressure plate can move in a direction close to or away from the top of the knife rod body; an elastic hole is provided at the position of the pressure plate corresponding to the first end.

[0011] In one embodiment, the tool bar body further includes a first clamping handle, and the first clamping handle is used to adapt to the mounting groove of the tool bar holder.

[0012] In one embodiment, a support surface is provided on the side of the knife rod body corresponding to the position of the blade slot, and the support surface is a vertical surface; a slope is provided on the side of the knife rod body corresponding to the front end of the blade slot, and the slope is arranged from the top of the knife rod body toward the bottom and inclined inward.

[0013] In one embodiment, the blade grinding fixture further includes a chamfered positioning seat for use with the tool rod, the chamfered positioning seat is provided with a chamfered positioning portion, and the chamfered positioning portion is used to abut against the blade.

[0014] In one embodiment, the chamfered positioning seat includes a seat body, and the seat body includes a second positioning bottom, a second positioning side and a second clamping handle for adapting to the tool rod holder mounting groove, the second positioning bottom is used to be tightly attached to the bottom of the tool rod, the second positioning side is used to be tightly attached to the side of the tool rod, and the second positioning bottom and the second positioning side form a positioning groove.

[0015] In one embodiment, the chamfered positioning seat further includes a chamfered stopper, the chamfered stopper is detachably connected to the seat body, and the chamfered positioning portion is provided on the chamfered stopper.

[0016] A blade grinding machine comprising:

[0017] A feeding device, comprising a frame, a power mechanism fixed to the frame, and a grinding wheel drivingly connected to the power mechanism;

[0018] A tool bar holder, wherein the tool bar holder is provided with a mounting slot;

[0019] An image acquisition device and a display screen, wherein the display screen is electrically connected to the image acquisition device; and

[0020] The blade grinding fixture.

[0021] In one embodiment, the feeding device also includes a feeding base, and the tool rod holder is fixed to the feeding base; the feeding base is provided with a first adjustment mechanism and a second adjustment mechanism, the first adjustment mechanism is used to drive the feeding base to move along the first direction, and the second adjustment mechanism is used to drive the feeding base to move along the second direction.

[0022] In one embodiment, the feeding device further includes a turntable, which is rotatably disposed on the feeding base, and the tool bar holder is fixed to the turntable.

[0023] The above-mentioned blade grinding fixture and blade grinder, the arbor body includes a first positioning bottom and a first positioning side, and the first positioning bottom and the first positioning side form an L-shaped blade groove. When installing the blade, the blade is placed in the blade groove, with the bottom of the blade close to the first positioning bottom and the side of the blade close to the first positioning side. The blade is positioned by the two reference parts of the first positioning bottom and the first positioning side, effectively ensuring the consistency of the blade clamping. In addition, when installing the blade, the blade can be placed into the blade groove from the side of the arbor body. This can prevent the front end of the blade groove from being worn and causing the groove width of the front end of the blade groove to increase, effectively avoiding angular positioning deviation after the blade is installed. After each grinding, there is no need to fully inspect and confirm the blade, thereby improving the efficiency of blade grinding. After the blade is placed in the blade groove, a fastener is used to lock and fix the pressure plate to the arbor body so that the second end of the pressure plate presses the blade. Compared to a movable pressure plate, the first end of this pressure plate is fixed to the blade rod body. During the blade locking process, the pressure plate only moves in the up and down direction to press the blade, effectively preventing the problem of angular displacement of the blade caused by the rotation of the pressure plate. This can ensure that the clamping accuracy of the blade is within a certain tolerance range, ensure the consistency of the blade clamping angle, and provide a strong guarantee for the angle of the blade after grinding. In this way, the blade grinding fixture can improve the accuracy of the blade grinding angle, thereby improving the qualified rate of blade grinding and improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic structural diagram of a tool bar according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0028] Figure 3 This is a structural schematic diagram of a blade placed in a blade slot according to an embodiment of the present invention;

[0029] Figure 4 This is a structural schematic diagram of a chamfered positioning seat according to an embodiment of the present invention;

[0030] Figure 5This is a schematic structural diagram of a tool rod and a chamfered positioning seat in cooperation with each other according to an embodiment of the present invention;

[0031] Figure 6 Schematic diagram of the structure of a blade grinder according to an embodiment of the present invention.

[0032] Explanation of the accompanying numbers: 10. Tool bar; 11. Tool bar body; 111. First positioning bottom; 112. First positioning side; 113. First avoidance groove; 114. Second avoidance groove; 115. Blade slot; 116. First clamping handle; 117. Support surface; 118. Inclined surface; 12. Press plate; 121. First end; 122. Second end; 123. Elastic hole; 13. Fastener; 20. Chamfered positioning seat; 21. Seat body; 211. Second positioning bottom; 212. Second positioning side; 213. Second clamping handle; 22. Chamfered stopper; 221. Chamfered positioning portion; 30. Blade; 40. Feed device; 41. Power mechanism; 42. Grinding wheel; 43. Feed base; 44. Turntable; 50. Tool bar holder; 51. Mounting groove; 52. Mounting seat; 53. Workbench DETAILED DESCRIPTION

[0033] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, the following describes in detail specific embodiments of the present invention in conjunction with the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] See also Figure 1 、 Figure 2 and Figure 3 A blade grinding fixture according to an embodiment of the present invention includes a shank 10. The shank 10 includes a shank body 11, a pressure plate 12, and a fastener 13. The shank body 11 includes a first positioning bottom 111 for tightly contacting the bottom of the blade 30 and a first positioning side 112 for tightly contacting the side of the blade 30. The pressure plate 12 is provided on at least a portion of the top surface of the shank body 11. The pressure plate 12 includes a first end 121 and a second end 122, the first end 121 being fixed to the shank body 11, and the second end 122 being arranged opposite to the first positioning bottom 111. The fastener 13 can lock and fix the pressure plate 12 to the shank body 11, so that the second end 122 of the pressure plate 12 presses the blade 30.

[0035] In the blade grinding fixture described above, the shank body 11 includes a first positioning bottom 111 and a first positioning side 112. The first positioning bottom 111 and the first positioning side 112 form an L-shaped blade slot 115. When installing the blade 30, the blade 30 is placed in the blade slot 115, with the bottom of the blade 30 in close contact with the first positioning bottom 111 and the side of the blade 30 in close contact with the first positioning side 112. The blade 30 is positioned by the two reference parts, the first positioning bottom 111 and the first positioning side 112, effectively ensuring the consistency of the blade 30 clamping. In addition, when installing the blade 30, the blade 30 can be placed into the blade slot 115 from the side of the shank body 11. This can prevent the front end of the blade slot 115 from being worn, which would increase the slot width at the front end of the blade slot 115. This effectively prevents angular positioning deviation of the blade 30 after installation. After each grinding, there is no need to fully inspect and confirm the blade 30, thereby improving the efficiency of blade 30 grinding. After the blade 30 is placed in the blade slot 115, the fastener 13 is used to lock and secure the pressure plate 12 to the arbor body 11, so that the second end 122 of the pressure plate 12 presses the blade 30. Compared to the movable pressure plate 12, the first end 121 of this pressure plate 12 is fixed to the arbor body 11. During the process of locking the blade 30, the pressure plate 12 only moves in the up and down directions to press the blade 30, effectively preventing the problem of angular displacement of the blade 30 caused by the rotation of the pressure plate 12. This ensures that the clamping accuracy of the blade 30 is within a certain tolerance range, ensures the consistency of the clamping angle of the blade 30, and provides a strong guarantee for the angle of the blade after grinding. In this way, the blade grinding fixture can improve the accuracy of the grinding angle of the blade 30, thereby improving the qualified rate of blade 30 grinding, and at the same time improve the grinding efficiency.

[0036] Optionally, the first end 121 of the pressure plate 12 is integrally formed with the arbor body 11. Alternatively, the arbor 10 further includes a hinge, and the first end 121 of the pressure plate 12 is hingedly connected to the arbor body 11 via the hinge. Of course, in other embodiments, other connection methods may be used to secure the first end 121 of the pressure plate 12 to the arbor body 11, and the present invention is not limited thereto.

[0037] In one embodiment, see Figure 2 and Figure 3, a first avoidance groove 113 is provided at the junction of the first positioning bottom 111 and the first positioning side 112, and the first avoidance groove 113 is recessed in the direction away from the blade slot 115. The first avoidance groove 113 is provided with a notch, and the notch is provided in the first positioning side 112. Specifically, the first avoidance groove 113 extends along the length direction of the first positioning side 112. In this way, interference can be avoided when the blade 30 is installed in the blade slot 115, and the stability of the clamping of the blade 30 is improved. In addition, the first positioning side 112 is provided with a notch of the first avoidance groove 113, which can reduce the contact area between the blade 30 and the first positioning side 112, while ensuring the consistency of the clamping of the blade 30, and also can improve the positioning accuracy of the blade 30.

[0038] In one embodiment, see Figure 2 A second escape groove 114 is provided between the bottom of the pressing plate 12 and the top of the arbor body 11. The pressing plate 12 is elastic, and at least a portion of the pressing plate 12 can move in a direction close to or away from the top of the arbor body 11. Specifically, when no external force is applied to the pressure plate 12, there is a gap between the bottom of the pressure plate 12 and the top of the blade rod body 11. This allows for a larger gap between the second end 122 of the pressure plate 12 and the first positioning bottom 111, making it easier to quickly insert the blade 30 into the blade slot 115. After the blade 30 is inserted into the blade slot 115, an external force is applied to the pressure plate 12, causing the pressure plate 12 to move in a direction close to the top of the blade rod body 11, causing the second end 122 of the pressure plate 12 to press against the blade 30. The pressure plate 12 is then locked to the blade rod body 11 by the fastener 13, thereby locking the blade 30. After the fastener 13 is removed, the pressure plate 12 can rebound to its initial state, i.e., there is a gap between the bottom of the pressure plate 12 and the top of the blade rod body 11. This facilitates installation of the blade 30 and helps securely lock the blade 30 into the blade slot 115.

[0039] Further, see Figure 2 The pressing plate 12 is provided with an elastic hole 123 at a position corresponding to the first end 121. Thus, by providing the elastic hole 123, when an external force acts on the pressing plate 12, at least a portion of the pressing plate 12 is facilitated to move in a direction close to or away from the arbor body 11.

[0040] In one embodiment, see Figure 1 and Figure 5The arbor body 11 further includes a first clamping handle 116, which is adapted to fit within the mounting slot 51 of the arbor holder 50. When the flank surface of the blade 30 needs to be sharpened, the blade 30 is placed within the blade slot 115 and secured thereto via the pressure plate 12 and fastener 13. The first clamping handle 116 is then placed within the mounting slot 51 of the arbor holder 50, and the arbor 10 is secured thereto using the fastening screws of the arbor holder 50. The flank surface of the blade 30 is aligned with the grinding wheel 42, and the flank surface can be sharpened.

[0041] In one embodiment, see Figure 2 The side of the shank body 11 is provided with a support surface 117 corresponding to the position of the blade groove 115, and the support surface 117 is a vertical surface. In this way, the vertical surface can play a supporting role, which is convenient for grinding the blade 30.

[0042] Further, see Figure 2 The side of the shank body 11 is provided with an inclined surface 118 corresponding to the front end of the blade groove 115. The inclined surface 118 is inclined inward from the top to the bottom of the shank body 11. In this way, during the grinding process of the back angle surface of the blade 30, the grinding wheel 42 can be effectively prevented from interfering with the shank 10.

[0043] In one embodiment, see Figure 4 and Figure 5 The blade grinding fixture further includes a chamfer positioning seat 20 for use with the tool bar 10. The chamfer positioning seat 20 is provided with a chamfer positioning portion 221, which is configured to abut against the blade 30. Specifically, the chamfer positioning portion 221 is disposed in front of the feed of the blade 30. When the blade 30 is being ground, the back surface of the blade 30 abuts against the chamfer positioning portion 221, which positions the blade 30 during feeding, ensuring effective control of the chamfer feed amount, reducing operator influence factors, and improving the accuracy and pass rate of negative chamfer width grinding.

[0044] Further, see Figure 5 and Figure 6The chamfering positioning seat 20 includes a seat body 21, and the seat body 21 includes a second positioning bottom 211, a second positioning side 212, and a second clamping handle 213 for adapting to the mounting groove 51 of the tool bar holder 50. The second positioning bottom 211 is used to be in close contact with the bottom of the tool bar 10, and the second positioning side 212 is used to be in close contact with the side of the tool bar 10. Specifically, the second positioning bottom 211 and the second positioning side 212 form an L-shaped positioning groove. When negative chamfering is performed on the blade 30, the second clamping handle 213 of the chamfering positioning seat 20 is locked and fixed in the mounting groove 51 of the tool bar holder 50, and the tool bar 10 is placed in the positioning groove, with the bottom of the tool bar 10 in close contact with the second positioning bottom 211, and the side of the tool bar 10 in close contact with the second positioning side 212. The tool bar 10 is positioned by the two reference parts, the second positioning bottom 211 and the second positioning side 212, effectively ensuring the consistency of the installation of the tool bar 10.

[0045] Further, see Figure 5 and Figure 6 The chamfered positioning seat 20 also includes a chamfered stopper 22, which is detachably connected to the seat body 21. The chamfered positioning portion 221 is disposed on the chamfered stopper 22. Specifically, the chamfered positioning seat 20 also includes mounting members, through which the chamfered stopper 22 is detachably mounted to the seat body 21; the mounting members may be screws, bolts, or the like. This combined connection between the chamfered stopper 22 and the seat body 21 ensures the support of the chamfered positioning seat 20 and reduces manufacturing complexity. Furthermore, the chamfered stopper 22 is easily disassembled and assembled, facilitating maintenance of the chamfered positioning seat 20.

[0046] See Figure 5 and Figure 6 A blade grinder provided by one embodiment of the present invention includes a feed device 40, a tool bar holder 50, an image acquisition device, a display screen, and a blade grinding fixture according to any of the above embodiments. The feed device 40 includes a frame, a power mechanism 41 fixed to the frame, and a grinding wheel 42 driven by the power mechanism 41. The tool bar holder 50 is provided with a mounting slot 51 adapted for the tool bar 10. The display screen is electrically connected to the image acquisition device. Thus, the use of this blade 30 grinder can improve the accuracy of the grinding angle and the grinding efficiency of the blade 30.

[0047] Further, see Figure 5 and Figure 6The feed device 40 also includes a feed base 43, and the tool holder 50 is fixed to the feed base 43. The feed base 43 is provided with a first adjustment mechanism and a second adjustment mechanism. The first adjustment mechanism is used to drive the feed base 43 to move in a first direction, and the second adjustment mechanism is used to drive the feed base 43 to move in a second direction. In this way, the position of the feed base 43 can be adjusted according to actual needs through the first adjustment mechanism and the second adjustment mechanism, thereby adjusting the relative position of the blade 30 and the grinding wheel 42, thereby facilitating the blade 30 to grind the negative chamfer. For ease of understanding, X is used to represent the first direction, and Z is used to represent the second direction.

[0048] Optionally, the first and second adjustment mechanisms are manual adjustment mechanisms. For example, the first and second adjustment mechanisms include a screw and a handwheel fixed to the end of the screw, and the screw is threadedly connected to the feed base 43. By rotating the handwheel, the feed base 43 can be driven to move in the first direction or the second direction. Of course, in other embodiments, the first and second adjustment mechanisms can also be electric adjustment mechanisms. For example, the first and second adjustment mechanisms include a motor and a screw, and the screw is threadedly connected to the feed base 43. The motor can drive the screw to rotate, thereby driving the feed base 43 to move in the first direction or the second direction.

[0049] Further, see Figure 5 and Figure 6 The feeding device 40 further includes a turntable 44, which is rotatably mounted on the feeding base 43, and the tool holder 50 is fixed to the turntable 44. In this way, the turntable 44 can drive the tool holder 50 to rotate, so that the tool holder 50 and the grinding wheel 42 form a chamfer angle, which facilitates the negative chamfering of the blade 30.

[0050] In one embodiment, see Figure 5 and Figure 6 The blade grinder also includes a workbench 53, a mounting base 52, and a fixing member. The tool holder 50 is mounted on the workbench 53 via the mounting base 52, which is then fixed to the turntable 44. The workbench 53 is provided with a slot. A fixing member passes through the mounting base 52 and the slot, locking the mounting base 52 to the workbench 53. The fixing member is released to adjust the mounting base 52. Once the mounting base 52 is positioned appropriately, it is fixed to the workbench 53 using the fixing member. This allows for flexible adjustment of the mounting base 52 according to actual needs, thereby adjusting the relative position of the blade 30 and the grinding wheel 42.

[0051] In this embodiment, see Figure 5 and Figure 6 The working principle of using this blade 30 grinder to grind the blade 30 back angle and grind the negative chamfer is as follows:

[0052] When the back angle of the blade 30 is ground, a suitable grinding wheel 42 is selected according to the grinding requirements of the blade 30, and the grinding wheel 42 is driven and connected to the power mechanism 41. Then, the blade 30 is clamped and positioned in the blade slot 115 by the pressure plate 12 and the fastener 13, and the tool bar 10 is locked and fixed to the tool bar holder 50. The first adjustment mechanism is adjusted to drive the feed base 43 to move in the first direction. The display screen shows the outline image of the blade 30, and the fastener 13 is loosened. The clamping position of the blade 30 is adjusted according to the reference grinding line on the display screen; after the blade 30 is adjusted to the appropriate position, the fastener 13 is used to lock and fix the blade 30. Call up the grinding program of the blade 30 from the program list, confirm and adjust the grinding parameters, and press start to perform the grinding operation. After the grinding of the first blade 30 is completed, remove the blade 30 and put it on the projector to detect and record the angle. Among them, the first blade 30 must ensure that the angle size of the first back angle is within the middle value of the tolerance range (44°54′); if there is a deviation, the rotation parameters of the feed base 43 are adjusted in the program to compensate, and subsequent grinding can be tested at a frequency of 1 / 10.

[0053] When the blade 30 is ground to a negative chamfer, the grinding wheel 42 is selected and installed according to the requirements of the grinding wheel 42 for grinding the negative chamfer of the blade 30, and the negative chamfer positioning seat 20 is fixed to the mounting groove 51 of the tool holder 50. Confirm that the rotation angle of the feed base 43 is 0°, lock and fix the blade 30 with the back angle ground to the blade groove 115 of the tool holder 10 with an extension length of 3mm to 4mm, and place the tool holder 10 in the positioning groove of the chamfer positioning seat 20. Through the first adjustment mechanism, the feed base 43 is moved in the first direction, and the outer edge of the end face of the grinding wheel 42 is brought close to the blade 30. Then, the tool holder 10 is removed and the grinding wheel 42 is started. The tool holder 10 is placed in the chamfer positioning seat 20 again, and the tool holder 10 is pushed in the three directions of the feed force, so that the blade 30 contacts the chamfer positioning portion 221. The second adjustment mechanism then moves the feed base 43 in the second direction, bringing the blade 30 into contact with the grinding wheel 42. The negative chamfer width requirement is 0.1±0.01, and the second direction feed amount is calculated using the formula z = 0.1 × sin25° × sin65° = 0.038. After feed grinding, the width of the first blade 30 must be inspected at a frequency of 1 / 10.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0056] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0057] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, the first and second features may be in direct contact, or the first and second features may be in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "upper" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "lower" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0058] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0059] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A blade grinding fixture, characterized in that: The utility model comprises a tool bar and a chamfering positioning seat for use with the tool bar, wherein the tool bar is used to clamp a blade to grind the back angle of the blade, and the chamfering positioning seat is used to cooperate with the tool bar to chamfer the blade; the tool bar comprises: A blade rod body, the blade rod body comprising a first positioning bottom portion for tightly contacting the bottom portion of the blade and a first positioning side portion for tightly contacting the side portion of the blade, the first positioning bottom portion and the first positioning side portion forming a blade slot; A pressure plate, the pressure plate being disposed on at least a portion of the top surface of the knife bar body; the pressure plate comprising a first end and a second end, the first end being fixed to the knife bar body, and the second end being disposed opposite to the first positioning bottom; and a fastener capable of locking and fixing the pressing plate to the blade rod body so that the second end of the pressing plate presses the blade; The chamfer positioning seat is provided with a chamfer positioning portion, the chamfer positioning portion is used to be arranged in front of the feed direction of the blade, and the chamfer positioning portion is used to position and cooperate with the back cutting surface of the blade; the chamfer positioning seat includes a seat body and a chamfer stopper, the seat body includes a second positioning bottom, a second positioning side and a second clamping handle for adapting to the tool rod holder mounting groove, the second positioning bottom is used to be in close contact with the bottom of the tool rod, the second positioning side is used to be in close contact with the side of the tool rod, and the second positioning bottom and the second positioning side form a positioning groove; the chamfer stopper is connected to the seat body, and the chamfer positioning portion is arranged on the chamfer stopper.

2. The blade grinding fixture according to claim 1, characterized in that: A first avoidance groove is provided at the junction of the first positioning bottom and the first positioning side portion, and the first avoidance groove is recessed in a direction away from the blade groove; the first avoidance groove is provided with a notch, and the notch is provided at the first positioning side portion.

3. The blade grinding fixture according to claim 1, characterized in that: A second escape groove is provided between the bottom of the pressing plate and the top of the knife rod body; the pressing plate is elastic, and at least a portion of the pressing plate can move in a direction close to or away from the top of the knife rod body.

4. The blade grinding fixture according to claim 1, characterized in that: An elastic hole is provided on the pressure plate at a position corresponding to the first end.

5. The blade grinding fixture according to claim 1, characterized in that: The tool rod body further includes a first clamping handle, which is used to fit into the mounting groove of the tool rod holder.

6. The blade grinding fixture according to claim 1, characterized in that: A support surface is provided on the side of the knife bar body at a position corresponding to the blade slot, and the support surface is a vertical surface.

7. The blade grinding fixture according to claim 1, characterized in that: A slope is provided on the side of the knife bar body corresponding to the front end of the blade slot, and the slope is arranged to be inclined inward from the top toward the bottom of the knife bar body.

8. A blade grinder, characterized in that: include: A feeding device, comprising a frame, a power mechanism fixed to the frame, and a grinding wheel drivingly connected to the power mechanism; A tool bar holder, wherein the tool bar holder is provided with a mounting slot; An image acquisition device and a display screen, wherein the display screen is electrically connected to the image acquisition device; and The blade grinding fixture according to any one of claims 1 to 7.

9. The blade grinder according to claim 8, characterized in that The feeding device also includes a feeding base, and the tool rod holder is fixed to the feeding base; the feeding base is provided with a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism is used to drive the feeding base to move along the first direction, and the second adjusting mechanism is used to drive the feeding base to move along the second direction.

10. The blade grinder according to claim 9, characterized in that The feeding device further comprises a turntable which is rotatably arranged on the feeding base, and the knife bar holder is fixed on the turntable.

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