A tool grinding device for variable angle grinding

Abstract

The present application relates to a technical field of knife grinding equipment, and particularly relates to a knife grinding device capable of variable-angle grinding, which comprises a first supporting seat, a second supporting seat and a grinding assembly, a clamp for clamping a knife is installed on the second supporting seat, a guide rail is fixedly connected between the first supporting seat and the second supporting seat, a moving bracket is slidingly installed on the guide rail, the moving bracket comprises a sliding block and a bracket, the sliding block is slidingly installed on the guide rail, the bracket is detachably connected to the sliding block, the bracket is movably connected to the grinding assembly through an adjusting assembly, the grinding assembly comprises a pull rod and a knife grinding stone, one end of the pull rod is connected to the adjusting assembly, and the knife grinding stone is arranged on the pull rod. By pushing the bracket to reciprocate along the guide rail and simultaneously driving the pull rod to swing left and right along the bracket, the knife grinding stone can be driven to grind at a variable angle on the blade, so that the operator can obtain a convex grinding edge with excellent grinding effect only by simple grinding operation without experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of knife sharpening equipment, in particular to a knife sharpening device capable of variable-angle grinding. BACKGROUND

[0002] In order to obtain a convex grinding edge with good cutting effect, the existing knife generally needs to be manually polished. Manual polishing often depends more on the skill of the polisher. Polishers without experience or insufficient experience cannot achieve good knife sharpening effect. Manual polishing is to hold the knife directly on the knife sharpening stone for edge grinding. During the grinding process, the angle of edge grinding is not easy to control, and the knife with uneven edge angle and uneven edge surface is easily ground. The existing knife sharpener has defects in adjusting the grinding angle of the knife edge and grasping the uniformity of grinding, and cannot meet the professional and accurate knife sharpening requirements of some knife enthusiasts. Moreover, the existing knife sharpener often occupies a large space and is not conducive to storage. SUMMARY

[0003] In view of the technical problems existing in the prior art, the purpose of the present application is to provide a knife sharpening device capable of variable-angle grinding, which can perform variable-angle grinding operation on the knife edge to obtain a convex grinding edge with excellent grinding effect.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] A knife sharpening device capable of variable-angle grinding, comprising a first support seat, a second support seat and a grinding assembly, a clamp for clamping a knife is installed on the second support seat, a guide rail is fixedly connected between the first support seat and the second support seat, a moving bracket is slidingly installed on the guide rail, the moving bracket comprises a sliding block and a bracket, the sliding block is slidingly installed on the guide rail, the bracket is detachably connected to the sliding block, the bracket is movably connected to the grinding assembly through an adjusting assembly, the grinding assembly comprises a pull rod and a knife sharpening stone, one end of the pull rod is connected to the adjusting assembly, and the knife sharpening stone is arranged on the pull rod.

[0006] Further, the adjusting assembly comprises a connecting piece and a first connecting bolt, two connecting blocks are provided on the connecting piece, one end of the pull rod is located between the two connecting blocks, through holes are formed in the two connecting blocks and the pull rod, and the two connecting blocks and the pull rod are rotatably connected through the first connecting bolt.

[0007] Further, a bracket through hole is formed in the connecting piece, the connecting piece is sleeved on the bracket through the bracket through hole, and upper and lower ends of the connecting piece are further provided with fixing nuts, an external thread is provided on the bracket, and the connecting piece is rotatably connected to the bracket through the fixing nuts.

[0008] Further, the grinding stone is connected to the pull rod through the first clamping block and the second clamping block, the first clamping block and the second clamping block are sleeved on the pull rod, the grinding stone is clamped between the first clamping block and the second clamping block, the outer side of the first clamping block is provided with a clamping block limiting block, the clamping block limiting block is fixed on the pull rod, the outer side of the second clamping block is provided with a handle, the handle is sleeved on the pull rod, the outer side of the handle is provided with a clamping nut, and the clamping nut is threadedly connected to the pull rod.

[0009] Further, the adjusting assembly further comprises a locking nut, which is arranged at the outer end of the fixing nut.

[0010] Further, the second support seat further comprises a second connecting bolt, two support seat connecting blocks are arranged on the second support seat, a clamp connecting block is arranged on the clamp, the clamp connecting block is located between the two support seat connecting blocks, through holes are formed in the two support seat connecting blocks and the clamp connecting block, and the two support seat connecting blocks and the clamp connecting block are connected through the second connecting bolt.

[0011] Further, the clamp further comprises a clamping bolt, a clamping groove and a bolt through hole are formed in the clamp, the tool is located in the clamping groove, and the clamping bolt passes through the bolt through hole to fix the tool in the clamping groove.

[0012] Further, a threaded hole is formed in the top of the sliding block, and the support is connected to the sliding block through the threaded hole.

[0013] Further, the number of guide rails is two, two guide rail through holes matched with the guide rails are formed in the sliding block, the sliding block is sleeved on the guide rails through the guide rail through holes, and a sliding block limiting block is arranged on one of the guide rails and fixed on both sides of the sliding block.

[0014] Further, the handle is provided with anti-skid lines.

[0015] Overall, the present application has the following advantages:

[0016] Firstly, the present application drives the support to reciprocate along the guide rail, drives the pull rod to swing up and down along the support, changes the included angle between the grinding stone and the support during the movement of the sliding block, drives the pull rod to swing left and right along the support, drives the grinding stone to grind the blade at a variable angle, changes the contact surface between the grinding stone and the tool during the grinding process of the tool, and further changes the grinding angle of the blade edge during the grinding process, so that the operator can obtain a convex grinding edge with excellent grinding effect through simple grinding operation without experience.

[0017] Secondly, the tool of the application can be adjusted in the pitch direction with the clamp, the fixed nut can adjust the height of the connecting piece fixed on the support, the pull rod is rotatably connected with the connecting piece, the change range of the angle between the grinding stone and the support can be determined by the fixed height of the connecting piece, so that the two-way adjustment of the angle of the grinding stone and the blade edge is realized, the adjustment of the grinding angle is more flexible and convenient, and the operation is more universal, and the overall stability during the tool grinding process is improved by locking the connecting block and the fixed nut on the support.

[0018] Thirdly, the grinding stone of the application is clamped by the first and second clamping blocks and locked by the clamping block limiting block and the clamping nut, so that the grinding stone can be conveniently replaced according to the wear degree, and the use is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the tool grinding device of the variable-angle grinding of the application;

[0020] Figure 2 is an exploded view of the connecting piece and the pull rod of the application;

[0021] Figure 3 is an enlarged view of the adjusting assembly of the application;

[0022] Figure 4 is an exploded view of the connecting piece and the grinding assembly of the application;

[0023] Figure 5 is an exploded view of the clamp and the second support seat of the application;

[0024] Figure 6 is an exploded view of the moving support of the application;

[0025] Wherein: 1: first support seat, 2: second support seat, 21: support seat connecting block, 22: second connecting bolt, 3: guide rail, 31: sliding block limiting block, 4: sliding block, 41: threaded hole, 42: guide rail through hole, 5: support, 6: adjusting assembly, 61: connecting piece, 611: connecting block, 612: support through hole, 62: first connecting bolt, 63: fixed nut, 64: locking nut, 7: grinding assembly, 71: pull rod, 711: pull rod through hole, 72: grinding stone, 73: clamping block limiting block, 74: first clamping block, 75: second clamping block, 76: handle, 77: clamping nut, 8: clamp, 81: clamp connecting block, 82: clamping groove, 83: bolt through hole, 84: clamping bolt. DETAILED DESCRIPTION

[0026] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0027] As Figure 1As shown in the figure, a variable angle grinding tool grinding device includes a first support seat, a second support seat and a grinding assembly, a clamp for clamping a tool is mounted on the second support seat, a guide rail is fixedly connected between the first support seat and the second support seat, a moving bracket is slidingly installed on the guide rail, the moving bracket includes a sliding block and a bracket, the sliding block is slidingly installed on the guide rail, the bracket is detachably connected to the sliding block, the bracket is movably connected to the grinding assembly through an adjusting assembly, the grinding assembly includes a pull rod and a grinding stone, one end of the pull rod is connected to the adjusting assembly, and the grinding stone is arranged on the pull rod.

[0028] The tool is fixed on the second support seat through the clamp, the angle of the tool fixed by the clamp can be adjusted, the user holds the end of the pull rod to make the grinding stone rotate along the bracket under the action of the adjusting assembly, that is, swing left and right along the bracket, so that a flat grinding edge can be polished; the user holds the end of the pull rod to make the grinding stone reciprocate along the guide rail under the action of the sliding block, swing up and down along the bracket, so that the included angle between the grinding stone and the bracket changes in the process of the sliding block moving, and the grinding stone swings left and right along the bracket under the action of the adjusting assembly, so that a convex grinding edge with excellent effect can be polished.

[0029] In the embodiment, the number of guide rails is two, two guide rail through holes matched with the guide rails are formed in the sliding block, the sliding block is sleeved on the guide rails through the guide rail through holes, so that the sliding block can stably drive the bracket to reciprocate along the guide rails, and a sliding block limiting block is arranged on one of the guide rails, the sliding block limiting block is fixed on both sides of the sliding block, and the sliding block limiting block is used for limiting the stroke range of the sliding block.

[0030] As shown in the figure, Figure 2 and Figure 3 The adjusting assembly includes a connecting piece and a first connecting bolt, two connecting blocks are arranged on the connecting piece, one end of the pull rod is located between the two connecting blocks, through holes are formed in the two connecting blocks and the pull rod, and the two connecting blocks and the pull rod are rotatably connected through the first connecting bolt. The pull rod can swing up and down on the bracket with the connecting piece as the center, so that the grinding stone can be flexibly adjusted with the contact surface of the tool.

[0031] As shown in the figure, Figure 2 and Figure 3 A bracket through hole is formed in the connecting piece, the connecting piece is sleeved on the bracket through the bracket through hole, the inner diameter of the bracket through hole is slightly larger than the outer diameter of the bracket, the connecting piece and the bracket are rotatably connected, so that the pull rod can rotate along the bracket with the connecting piece, swing left and right along the bracket, the upper and lower ends of the connecting piece are further provided with fixing nuts, an external thread is arranged on the bracket, and the connecting piece is rotatably connected to the bracket through the fixing nuts. By adjusting the fixing nuts at the upper and lower ends of the connecting piece, the position of the connecting piece fixed on the bracket and the grinding angle of the grinding stone and the tool can be adjusted.

[0032] In the embodiment, the adjusting assembly further comprises a locking nut arranged at the outer end of the fixing nut, and the connecting piece and the fixing nut are locked on the support through the locking nut, so that the change of the grinding angle caused by the loosening of the fixing nut during the grinding of the cutter is avoided, and the overall stability of the adjusting assembly is improved.

[0033] As shown in Figure 1 and Figure 4 , the grinding stone is connected to the pull rod through the first clamping block and the second clamping block, the first clamping block and the second clamping block are sleeved on the pull rod, the grinding stone is clamped between the first clamping block and the second clamping block, the outer side of the first clamping block is provided with a clamping block limiting block, the clamping block limiting block is fixed on the pull rod, the outer side of the second clamping block is provided with a handle, the handle is sleeved on the pull rod, the outer side of the handle is provided with a clamping nut, and the clamping nut is threadedly connected to the pull rod. The first clamping block and the second clamping block form clamping on the grinding stone, the clamping nut is loosened in the direction of the end of the pull rod, the worn grinding stone is taken out of the first clamping block and the second clamping block, a new grinding stone is placed between the first clamping block and the second clamping block, and the clamping nut is tightened in the direction of the grinding stone. The clamping block limiting block, the handle and the clamping nut lock the grinding stone, the first clamping block and the second clamping block, so that the replacement of the grinding stone is conveniently completed.

[0034] In the embodiment, the handle is provided with anti-skid lines, so that the user does not slip when holding the handle.

[0035] As shown in Figure 1 and Figure 5 , the second support seat further comprises a second connecting bolt, two support seat connecting blocks are arranged on the second support seat, a clamp connecting block is arranged on the clamp, the clamp connecting block is located between the two support seat connecting blocks, a through hole is formed in each of the two support seat connecting blocks and the clamp connecting block, and the two support seat connecting blocks and the clamp connecting block are connected through the second connecting bolt. The clamp is rotatably connected to the second support seat, the cutter can be adjusted in the pitch direction with the clamp, the grinding of the cutter at different angles is realized, and the operator can polish according to the state of the cutter to achieve better grinding effect.

[0036] The clamp further comprises a clamping bolt, a clamping groove and a bolt through hole are formed in the clamp, the cutter is located in the clamping groove, the clamping bolt passes through the bolt through hole to fix the cutter in the clamping groove, the clamping bolt is threadedly connected in the bolt through hole, the distance between the clamping bolt and the clamping groove is adjusted by rotating the clamping bolt, so that the cutter is tightly clamped, the clamping of different cutters is realized, and the device is suitable for the grinding operation of most cutters.

[0037] As shown in Figure 1 and Figure 6As shown, the sliding block top is provided with a threaded hole, the support is connected on the sliding block through the threaded hole, the support can be flexibly disassembled on the sliding block, when the device is not needed, the support is disassembled from the sliding block, the occupied space can be reduced, and storage is facilitated.

[0038] The use principle of the present application is as follows:

[0039] Clamping cutter: loosen the clamping bolt, so that the spacing between the clamping bolt and the clamping groove is sufficient to accommodate the cutter, insert the back part of the cutter between the clamping bolt and the clamping groove, then tighten the clamping bolt to clamp the cutter.

[0040] Adjust the angle of the clamp: loosen the second connecting bolt to adjust the clamp together with the cutter to the required angle, tighten the second connecting bolt so that the clamp connecting block is locked between the two support seat connecting blocks at a fixed angle.

[0041] Adjust the height of the connecting piece: adjust the connecting piece to the required height, tighten the fixing nut close to the connecting piece, so that the connecting piece is fixed on the support, then tighten the locking nut close to the fixing nut, so that the connecting piece and the fixing nut are locked on the required height of the support, that is, the connecting piece is adjusted to the required height.

[0042] When in use, the whetstone is aligned with the cutting edge, the support is pushed to reciprocate along the guide rail, the whetstone abuts against the cutting edge, the pull rod swings up and down with the movement of the support, and the handle is held to swing the pull rod left and right along the support, so that the whetstone is driven to grind the cutting edge at a variable angle, and an excellent convex grinding edge is obtained.

[0043] In summary, this utility model utilizes the reciprocating motion of the support along the guide rail, which in turn causes the pull rod to swing up and down along the support. This changes the angle between the sharpening stone and the support as the slider moves, simultaneously causing the pull rod to swing left and right along the support. This allows the sharpening stone to perform variable-angle grinding on the cutting edge, thus altering the contact surface between the sharpening stone and the cutting tool during the grinding process. Consequently, the grinding angle of the cutting edge changes during grinding, enabling operators to achieve excellent convex sharpening results with simple grinding operations, even without prior experience. The support and slider are connected by threads, allowing for quick assembly and disassembly of the support from the slider, reducing the space occupied by the device and facilitating storage. The cutting tool of this invention can be adjusted in the pitch direction along with the clamp. The fixing nut can adjust the height of the connecting piece fixed on the bracket. The pull rod and the connecting piece are rotatably connected, so the range of variation of the angle between the sharpening stone and the bracket can be determined by the fixed height of the connecting piece. This achieves bidirectional adjustment of the sharpening stone angle and the cutting edge angle, making the adjustment of the grinding angle more flexible and convenient, and the operation more universal. The locking nut locks the connecting block and the fixing nut on the bracket, improving the overall stability of the tool grinding process. The sharpening stone of this invention is clamped by the first and second clamping blocks and locked by the clamping block limit block and the clamping nut, making the sharpening stone easy to replace according to the degree of wear, making it more convenient to use.

[0044] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A tool grinding device for variable angle grinding, characterized in that: The device includes a first support base, a second support base, and a grinding assembly. The second support base is equipped with a clamp for holding the cutting tool. A guide rail is fixedly connected between the first and second support bases. A movable bracket is slidably mounted on the guide rail. The movable bracket includes a slider and a support. The slider is slidably mounted on the guide rail, and the support is detachably connected to the slider. The support is movably connected to the grinding assembly through an adjustment assembly. The grinding assembly includes a pull rod and a sharpening stone. One end of the pull rod is connected to the adjustment assembly, and the sharpening stone is disposed on the pull rod. The adjustment assembly includes a connector and a first connecting bolt. The connector has two connecting blocks, and one end of the pull rod is located between the two connecting blocks. Both connecting blocks and the pull rod have through holes. The two connecting blocks and the pull rod are rotatably connected by the first connecting bolt. The connector has a bracket through hole, and the connector is sleeved on the bracket through the bracket through the bracket through hole. The upper and lower ends of the connector are also provided with fixing nuts. The bracket is provided with external threads, and the connector is rotatably connected to the bracket through the fixing nuts. The user can hold the end of the lever to make the whetstone rotate along the bracket under the action of the adjustment component, that is, swing left and right along the bracket to grind a flat edge; or the user can hold the end of the lever to make the whetstone move back and forth along the guide rail under the action of the slider, swinging up and down along the bracket, so that the angle between the whetstone and the bracket changes during the movement of the slider, and at the same time swings left and right along the bracket under the action of the adjustment component to grind a convex edge.

2. The tool grinding device for variable angle grinding according to claim 1, characterized in that: The whetstone is connected to the pull rod via a first locking block and a second locking block. The first locking block and the second locking block are fitted onto the pull rod, and the whetstone is clamped between the first locking block and the second locking block. A locking block limiting block is provided on the outside of the first locking block, and the locking block limiting block is fixed onto the pull rod. A handle is provided on the outside of the second locking block, and the handle is fitted onto the pull rod. A clamping nut is provided on the outside of the handle, and the clamping nut is threaded onto the pull rod.

3. The tool grinding device for variable angle grinding according to claim 1, characterized in that: The adjusting assembly also includes a locking nut, which is located at the outer end of the fixing nut.

4. The tool grinding device for variable angle grinding according to claim 1, characterized in that: The second support also includes a second connecting bolt. The second support is provided with two support connecting blocks, and the clamp is provided with a clamp connecting block. The clamp connecting block is located between the two support connecting blocks. Both the two support connecting blocks and the clamp connecting block are provided with through holes. The two support connecting blocks and the clamp connecting block are connected by the second connecting bolt.

5. The tool grinding device for variable angle grinding according to claim 1, characterized in that: The fixture also includes a clamping bolt. The fixture has a clamping groove and a bolt through hole. The tool is located in the clamping groove, and the clamping bolt passes through the bolt through hole to fix the tool in the clamping groove.

6. The tool grinding apparatus for variable angle grinding according to claim 1, characterized in that: The top of the slider has a threaded hole, and the bracket is connected to the slider through the threaded hole.

7. The tool grinding apparatus for variable angle grinding according to claim 1, characterized in that: There are two guide rails, and the slider has two guide rail through holes that mate with the guide rails. The slider is fitted onto the guide rails through the guide rail through holes. One of the guide rails has a slider limiting block, which is fixed on both sides of the slider.

8. The tool grinding apparatus for variable angle grinding according to claim 2, characterized in that: The handle has a non-slip texture.

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