Adjustable supporting plate structure special for sharpening knife

Abstract

The utility model discloses an adjustable supporting plate structure special for sharpening, which belongs to the technical field of cutter machining and comprises an adjusting support, a supporting plate, a supporting plate and a supporting plate. The connecting seat is arranged above the execution part in a sliding mode, and a fine adjustment structure is further arranged on the execution part so as to adjust the position of the connecting seat relative to the execution part; a connecting part is installed on one side of the supporting plate, and the connecting part is hinged to the connecting base and elastically connected with the connecting base; the cutter is sleeved on a tapered core rod through a shaft hole so as to realize the axial limiting of the cutter, and the core rod is coaxially arranged between two ejector pins on a machine tool; the supporting plate at least partially abuts against the face, opposite to the face to be polished, of one tool bit so as to achieve vertical positioning of the tool bit. The tool is axially limited through cooperation of the shaft hole and the taper core rod, the tool bit is vertically positioned through the supporting plate, it can be guaranteed that the position of the tool bit is accurate in the grinding process, and the grinding precision of the front tool face of the tool bit is improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool processing technology, and in particular to an adjustable sharpening tool support plate structure. Background Technology

[0002] In the field of machining, milling cutters are commonly used cutting tools. After prolonged use, milling cutters inevitably experience wear and dulling of the cutting teeth (cutting tips), which leads to substandard surface roughness and affects machining quality. Therefore, milling cutters need to be re-sharpened, usually by re-sharpening the rake face.

[0003] Currently, the main method for regrinding end mills is to manually hold the end mill by hand, placing the rake face against the grinding wheel for manual regrinding. This method has drawbacks:

[0004] Low grinding accuracy: Manual operation makes it difficult to ensure that the grinding amount of each rake face is consistent, which can easily lead to large errors. This results in inconsistent cutting performance of each tooth of the milling cutter, affecting the overall performance and machining accuracy of the milling cutter.

[0005] Difficulty in angle control: The rake face of a milling cutter has specific angle requirements, and it is difficult to accurately control this angle during manual grinding. This can easily change the rake angle, thereby affecting the cutting performance and service life of the milling cutter.

[0006] Safety risks exist: During manual grinding, operators need to directly contact the high-speed rotating grinding wheel and milling cutter. If the operation is not done properly, safety accidents can easily occur, threatening the personal safety of the operators.

[0007] To address the problems existing in the prior art, this application proposes an adjustable grinding tool support plate structure to replace manual support for milling cutters. Utility Model Content

[0008] This utility model provides an adjustable support plate structure for sharpening knives to solve the problems in the prior art.

[0009] The present invention adopts the following technical solution: an adjustable grinding tool support plate structure for limiting the movement of a tool. The tool body has a shaft hole at its center and a plurality of cutting heads evenly distributed on the outer edge of the tool body. The support plate structure includes: an adjusting bracket with an actuator; a connecting seat slidably disposed above the actuator, and the actuator is also provided with a fine-tuning structure to adjust the position of the connecting seat relative to the actuator; a support plate with a connecting part mounted on one side, the connecting part being hinged to the connecting seat and elastically connected to the connecting seat; the tool is sleeved on a tapered mandrel through the shaft hole to achieve axial limiting of the tool, and the mandrel is coaxially mounted between two ejector pins on a machine tool; the support plate at least partially abuts against the opposite surface of one of the cutting heads to be ground to achieve vertical positioning of the cutting head; when the mandrel rotates, the support plate disengages from the cutting head and remains against the tool under the action of elasticity.

[0010] Preferably, the upper surface of the support plate that abuts against the cutter head is chamfered.

[0011] Preferably, the connecting seat has a hinge seat at the front end, and the connecting part is hinged to the hinge seat. The hinge seat has a first positioning hole, and the connecting part has a second positioning hole corresponding to the first positioning hole. A first spring is installed in the first positioning hole and the second positioning hole to realize the elastic connection between the connecting part and the connecting seat.

[0012] Preferably, a slide rail is mounted on the upper end of the actuator, and the main body of the connecting seat is mounted on the actuator of the slide rail.

[0013] Preferably, the fine-tuning structure includes a first support mounted on the actuator and a micrometer head mounted on the first support, wherein the actuator of the micrometer head is elastically connected to the connecting seat.

[0014] Preferably, the main body of the connector has a slot, the actuator of the micro head is fixedly inserted into the connecting ring and the connecting ring is located in the slot, and the slot is also provided with a third positioning hole, in which a second spring is installed; the second spring abuts against the front end of the actuator of the micro head so that the connecting ring abuts against the first limiting wall in the slot.

[0015] Preferably, the adjusting bracket includes: a rod, which is longitudinally fixedly installed on the machine tool base; a second support, having an insertion hole for the rod to pass through and a gap extending from the insertion hole to either side of the second support, the gap being vertically distributed; a first adjusting screw, the threaded end of which is perpendicular to the gap and extends laterally through the second support, and is locked by a first adjusting nut; the actuator is installed on the second support.

[0016] Preferably, the actuator is configured as a right-angle plate, and a strip groove is provided at the vertical end of the right-angle plate; a second adjusting screw and a second adjusting nut are provided on the side of the actuator, the second adjusting screw passes through the second support and at least partially passes through the strip groove, and the second adjusting nut is threadedly connected to the second adjusting screw to lock the vertical end to the second support.

[0017] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0018] The axial positioning of the tool is achieved through the engagement of the shaft hole and the tapered mandrel, while the vertical positioning of the tool head by the support plate ensures accurate positioning of the tool head during grinding, improves the grinding accuracy of the tool head's rake face, and guarantees the machining quality of the tool. The sliding fit micro-adjustment structure of the connecting seat can precisely adjust the position of the support plate, further improving the positioning accuracy of the tool head and placing it in the optimal grinding position, which is beneficial for high-quality grinding of the tool head by the grinding wheel. At the same time, the actuator of the adjusting bracket can move within a certain range, facilitating quick adjustment of the support plate's position so that the support plate can quickly abut against the back of the tool head. Utilizing the elasticity of the support plate, after grinding one tool head, simply rotating the mandrel allows the support plate to automatically move over to the next tool head and abut against its back, achieving rapid tool head switching. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the cutting tool and support plate of this utility model;

[0022] Figure 3 This is a cross-sectional view of the connecting seat, fine-tuning structure, and support plate of this utility model;

[0023] Figure 4 This is a perspective view of the connector and fine-tuning structure of this utility model;

[0024] Figure 5 This is a perspective view of the adjustment bracket of this utility model;

[0025] Figure 6 This is an exploded view of the adjusting bracket of this utility model.

[0026] Figure Labels

[0027] 1-Cutting tool; 11-Cutting tool body; 111-Shaft hole; 12-Cutting head; 2-Adjusting bracket; 21-Actuating component; 211-Strip groove; 22-Slide rail; 23-Rod; 24-Second support; 241-Insertion hole; 242-Gap; 25-First adjusting screw; 26-First adjusting nut; 27-Second adjusting screw; 28-Second adjusting nut; 3-Connecting seat; 31-Hinge seat; 311-First positioning hole; 32-Slot; 33-Third positioning hole; 34-Second spring; 35-First limiting wall; 4-Fine-tuning structure; 41-First support; 42-Differentiator head; 43-Connecting ring; 5-Support plate; 51-Connecting part; 52-Second positioning hole; 6-Core rod; 7-First spring. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0029] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0030] Reference Figures 1 to 6 As shown, this utility model embodiment provides an adjustable sharpening support plate structure for limiting the cutting tool 1. The cutting tool 1 has a shaft hole 111 at the center of the tool body 11 and a plurality of cutting heads 12 evenly distributed on the outer edge of the tool body 11. In practical applications, the cutting tool 1 is generally a toothed three-sided milling cutter. The cutting head of the toothed three-sided milling cutter has a rake face, a back face, and a clearance angle. The rake face is the surface to be sharpened, the back face is the opposite surface to the surface to be sharpened, and the clearance angle is the surface connecting the rake face and the back face. The sharpening of the rake face is generally carried out by a grinding machine fixed on a machine tool. The grinding machine has a rotatable grinding wheel, which is parallel to or tends to be parallel to the rake face for sharpening.

[0031] The special support plate structure mainly includes an adjusting bracket 2, a connecting seat 3, and a support plate 5.

[0032] The adjusting bracket 2 has an actuator 21; a connecting seat 3 is slidably disposed above the actuator 21, and the actuator 21 is also provided with a fine-tuning structure 4 to adjust the position of the connecting seat 3 relative to the actuator 21; a support plate 5 has a connecting part 51 mounted on one side, the connecting part 51 being hinged to the connecting seat 3 and elastically connected to the connecting seat 3. In some practical applications, the connecting seat 3 has a hinge seat 31 located at the front end, and the connecting part 51 is hinged to the hinge seat 31. The hinge seat 31 has a first positioning hole 311, and the connecting part 51 has a second positioning hole 52 corresponding to the first positioning hole 311. A first spring 7 is installed in the first positioning hole 311 and the second positioning hole 52 to achieve an elastic connection between the connecting part 51 and the connecting seat 3. A slide rail 22 is installed on the upper end of the actuator 21, and the main body of the connecting seat 3 is installed on the actuator of the slide rail 22 so that the connecting seat 3 can be slidably disposed above the actuator 21.

[0033] The cutting tool 1 is sleeved onto the tapered mandrel 6 through the shaft hole 111 to achieve axial positioning of the cutting tool 1. The mandrel 6 is coaxially mounted between two ejector pins on the machine tool to ensure that the cutting tool 1 can rotate stably with the mandrel 6. The support plate 5 at least partially abuts against the opposite surface of one of the cutting heads 12 to be ground (i.e., the back of the toothed three-sided end mill) to achieve vertical positioning of the cutting head 12 (generally, the upper surface of the end of the support plate 5 that abuts against the cutting head 12 is chamfered); when the mandrel 6 rotates (e.g. Figure 2 When the direction is clockwise, the support plate 5 is disengaged from the cutter head 12 and remains against the cutter 1 under the action of elasticity.

[0034] In this embodiment, the actuator 21 of the adjusting bracket 2 can move within a certain range, driving the connecting seat 3 and the support plate 5 to move, so that the support plate 5 can abut against the opposite surface (back of the blade) of the blade head 12 to be ground. The fine-tuning structure 4 on the actuator 21 can push the connecting seat 3, thereby driving the support plate 5 to move back and forth, precisely adjusting the position of the blade head 12, so that the blade head 12 is in a relatively vertical state, which is convenient for the grinding wheel to grind the front face of the blade head 12. When the mandrel 6 rotates, the support plate 5 disengages from the current blade head 12 and always abuts against the blade 1 under the action of elasticity. After one blade head 12 is ground, the mandrel 6 is rotated clockwise, and the support plate 5 passes over the next blade head 12 under the action of elasticity and abuts against its back, preparing for the grinding of the next blade head 12.

[0035] Therefore, the axial positioning of the tool 1 is achieved through the cooperation between the shaft hole 111 and the tapered mandrel 6, and the vertical positioning of the tool head 12 by the support plate 5 ensures the accurate positioning of the tool head 12 during grinding, improves the grinding accuracy of the rake face of the tool head 12, and guarantees the machining quality of the tool 1. The fine-tuning structure 4 can precisely adjust the position of the support plate 5, further improving the positioning accuracy of the tool head 12, so that the tool head 12 is in the optimal grinding position, which is conducive to the high-quality grinding of the tool head 12 by the grinding wheel.

[0036] The actuator 21 of the adjusting bracket 2 can move within a certain range, facilitating quick adjustment of the position of the support plate 5 so that the support plate 5 can quickly abut against the back of the cutter head 12. Utilizing the elasticity of the support plate 5, after one cutter head 12 has been sharpened, simply rotating the mandrel 6 will allow the support plate 5 to automatically pass over the next cutter head 12 and abut against its back, achieving rapid switching of the cutter head 12.

[0037] In some practical applications, refer to Figure 1 and Figure 4 As shown, the fine-tuning structure 4 includes a first support 41 mounted on the actuator 21 and a micrometer head 42 mounted on the first support 41. The actuator of the micrometer head 42 is elastically connected to the connecting seat 3. As prior art (i.e., an outside micrometer screw gauge), the micrometer head 42 can finely adjust the lateral position of the support plate 5, generally by only 1-3 micrometers. The elastic connection between the actuator of the micrometer head 42 and the connecting seat 3 increases the tolerance of the grinding feed during actual machining (the feed is controlled by the sliding of the connecting seat 3 and the precise adjustment of the micrometer head 42). Even if the feed is slightly larger, the elasticity prevents the grinding wheel from directly colliding with the cutter head 12, instead providing a certain buffer to avoid damage to the cutter head 12.

[0038] Specifically, the main body of the connecting seat 3 has a slot 32, the actuator of the microhead 42 is fixedly inserted into the connecting ring 43, and the connecting ring 43 is located in the slot 32. The slot 32 also has a third positioning hole 33, and a second spring 34 is installed in the third positioning hole 33. The second spring 34 abuts against the front end of the actuator of the microhead 42, so that the connecting ring 43 abuts against the first limiting wall 35 in the slot 32. The elastic connection between the actuator of the microhead 42 and the connecting seat 3 can be achieved by the action of the second spring 34.

[0039] In some practical applications, refer to Figure 1 , Figure 5 and Figure 6As shown, the adjusting bracket 2 includes a rod 23, a second support 24, a first adjusting screw 25, and a first adjusting nut 26. The rod 23 is longitudinally fixedly installed on the machine tool base; the second support 24 has an insertion hole 241 for the rod 23 to pass through, and a gap 242 extending from the insertion hole 241 to either side of the second support 24, the gap 242 being vertically distributed; the threaded end of the first adjusting screw 25 is perpendicular to the gap 242 and extends laterally through the second support 24, and is locked by the first adjusting nut 26; the actuator 21 is installed on the second support 24.

[0040] The rod 23 is longitudinally fixed on the machine tool base. The second support 24 is fitted onto the rod 23 through the insertion hole 241, thereby enabling the initial position adjustment of the support plate 5 in the height direction to accommodate three-sided milling cutters with insert teeth of different height specifications. When the threaded end of the first adjusting screw 25 is perpendicular to the gap 242 and passes through the second support 24 laterally, and is locked by the first adjusting nut 26, tightening the first adjusting nut 26 will reduce the gap 242, increasing the friction between the second support 24 and the rod 23, thus fixing the second support 24 in a specific position on the rod 23. Conversely, loosening the first adjusting nut 26 will increase the gap 242, reducing the friction between the second support 24 and the rod 23, allowing the second support 24 to move freely on the rod 23 for easy height adjustment.

[0041] The actuator 21 is mounted on the second support 24. After the position of the second support 24 is adjusted and fixed in the above manner, the actuator 21 is also fixed in position. The change in position of the actuator 21 will cause the connecting seat 3 and the support plate 5 to move, thereby changing the position of the support plate 5 relative to the toothed three-sided milling cutter head 12, thus realizing the adjustment of the grinding position of the cutter head 12.

[0042] The structural design of the adjusting bracket 2 allows for flexible height adjustment of the second support 24 on the rod 23. For toothed three-sided end mills with different thicknesses or installation height requirements, the position of the second support 24 on the rod 23 can be adjusted to ensure that the support plate 5 accurately abuts against the back of the cutter head 12. This greatly improves the adaptability and versatility of the special support plate structure for different cutters 1. At the same time, the second support 24 can also rotate relative to the rod 23, thereby adjusting the lateral angle of the support plate 5. Especially for some cutter backs with a certain inclination angle, the support plate 5 can also stably abut against the cutter back.

[0043] In addition, based on the aforementioned adjustment bracket 2, the actuator 21 is configured as a right-angle plate, and a strip groove 211 is provided at the vertical end of the right-angle plate; a second adjusting screw 27 and a second adjusting nut 28 are provided on the side of the actuator 21, the second adjusting screw 27 passes through the second support 24 and at least partially passes through the strip groove 211, and the second adjusting nut 28 is threadedly connected to the second adjusting screw 27 to lock the vertical end to the second support 24.

[0044] When it is necessary to adjust the front-to-back position of the actuator 21 (right-angle plate), loosen the second adjusting nut 28. At this time, the right-angle plate can move back and forth relative to the second support 24 along the direction of the slot 211. The slot 211 provides a certain amount of room for the front-to-back movement of the right-angle plate. After adjusting to the appropriate front-to-back position, tighten the second adjusting nut 28 to lock the vertical end of the right-angle plate onto the second support 24, thereby fixing the front-to-back position of the actuator 21. This adjustment of the front-to-back position can further precisely adjust the position of the support plate 5 relative to the toothed three-sided milling cutter head 12 to better adapt to different grinding needs.

[0045] Based on the same structure of the second adjusting screw 27 and the slot 211, since the slot 211 has a certain length, the right-angle plate can rotate around the second adjusting screw 27 at a certain angle when the second adjusting nut 28 is loosened. By rotating the right-angle plate, its vertical tilt angle can be changed. After adjusting to a suitable vertical tilt angle, tighten the second adjusting nut 28 again to lock the vertical end of the right-angle plate onto the second support 24, thereby fixing the vertical tilt angle of the right-angle plate. Adjusting the vertical tilt angle allows the support plate 5 to better conform to the back shape of the toothed three-sided milling cutter head 12, improving the accuracy of the vertical positioning of the cutter head 12.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An adjustable supporting plate structure for a grinding machine, used for limiting a cutter (1), the cutter (1) having a shaft hole (111) in the center of a cutter body (11), the cutter (1) having a plurality of cutter heads (12) evenly distributed on the outer edge of the cutter body (11); characterized in that, The special support plate structure comprises: An adjusting support (2) has an actuator (21); A connecting seat (3) is slidably arranged above the actuator (21), and a fine adjustment structure (4) is further arranged on the actuator (21) to adjust the position of the connecting seat (3) relative to the actuator (21); A support plate (5) has a connecting part (51) mounted on one side of the support plate (5), the connecting part (51) is hingedly connected to the connecting seat (3) and elastically connected to the connecting seat (3); The tool (1) is sleeved on the core rod (6) with a taper through the shaft hole (111) to realize axial positioning of the tool (1), and the core rod (6) is coaxially installed between two top pins on the machine tool; the support plate (5) is at least partially abutted against the opposite surface of the surface to be polished of one of the tool heads (12) to realize vertical positioning of the tool head (12); when the core rod (6) rotates, the support plate (5) is separated from the tool head (12) and always abuts against the tool (1) under the action of the elastic force.

2. The adjustable sharpening jig special support plate structure according to claim 1, characterized in that, The end surface of the support plate (5) abutting against the tool head (12) is chamfered.

3. The adjustable sharpening jig special support plate structure according to claim 1, characterized in that, The connecting seat (3) has a hinge seat (31) at the front end, the connecting part (51) is hingedly connected to the hinge seat (31), the hinge seat (31) is provided with a first positioning hole (311), the connecting part (51) is provided with a second positioning hole (52) corresponding to the first positioning hole (311), and a first spring (7) is installed in the first positioning hole (311) and the second positioning hole (52) to realize elastic connection between the connecting part (51) and the connecting seat (3).

4. The adjustable sharpening jig according to claim 1, wherein, The upper end of the actuator (21) is provided with a sliding rail (22), and the main body of the connecting seat (3) is installed on the execution part of the sliding rail (22).

5. The adjustable sharpening jig special support plate structure according to claim 1, characterized in that, The fine adjustment structure (4) comprises a first support (41) installed on the actuator (21) and a differential head (42) installed on the first support (41), and the execution part of the differential head (42) is elastically connected to the connecting seat (3).

6. The adjustable sharpening jig special support plate structure according to claim 5, characterized in that, The main body of the connecting seat (3) is provided with a slot (32), the execution part of the differential head (42) is fixedly inserted into a connecting ring (43), and the connecting ring (43) is located in the slot (32), the slot (32) is further provided with a third positioning hole (33), and a second spring (34) is installed in the third positioning hole (33); the second spring (34) is positively abutted against the front end of the execution part of the differential head (42) to make the connecting ring (43) abut against a first limiting wall (35) in the slot (32).

7. The adjustable sharpening jig special support plate structure according to claim 1, characterized in that, The adjusting support (2) comprises: A rod (23) is fixedly installed on the machine tool base in the longitudinal direction; A second support (24) has a plug hole (241) for the rod (23) to pass through, and a gap (242) passing through from the plug hole (241) to any side edge of the second support (24), and the gap (242) is vertically distributed; A first adjusting screw (25) has a threaded end penetrating through the second support (24) perpendicularly to the gap (242) and is locked by a first adjusting nut (26); the actuator (21) is mounted on the second support (24).

8. The adjustable sharpening jig special support plate structure according to claim 7, characterized in that, The actuator (21) is configured as a right-angle plate, and a vertical end of the right-angle plate is provided with a strip-shaped slot (211); a side of the actuator (21) is provided with a second adjusting screw (27) and a second adjusting nut (28), the second adjusting screw (27) penetrates through the second support (24) and at least partially passes through the strip-shaped slot (211), and the second adjusting nut (28) is threadedly connected to the second adjusting screw (27) to lock the vertical end on the second support (24).

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