A trocar sharpening machine and sharpening process thereof

Abstract

The present invention discloses a sleeve needle sharpening machine and a sharpening process thereof, which relate to the technical field of grinding processing, can realize precise positioning and automatic loading, improve production efficiency, and reduce production costs caused by grinding wheel wear. A sleeve needle sharpening machine includes a frame, a base, an angle adjustment mechanism, a needle shaft, an automatic loading and unloading mechanism, a grinding wheel adjustment mechanism, and a grinding wheel. The base includes a lower base and a middle base. The lower base is slidably arranged on the frame along the Y-axis. The middle base is slidably arranged on the lower base along the X-axis. The position of the needle shaft in the horizontal plane is determined by the middle base and the lower base, and then the sharpening angle is determined by the angle adjustment mechanism. The sharpening work can be completed by lifting the grinding wheel through the grinding wheel adjustment mechanism, completing the sharpening process under precise positioning, reducing the damage of the grinding wheel, avoiding the increase in production costs caused by excessive wear of the grinding wheel, and improving production efficiency at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of grinding processing, in particular to a trocar sharpening machine and a sharpening process thereof. Background Art

[0002] Traditional sharpening machines require manual loading and unloading of products and manual advancement of the grinding platform to achieve product sharpening operations. Product positioning is complex, positioning accuracy is difficult to adjust, production efficiency is low, and grinding wheel loss is large. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a trocar sharpening machine and a sharpening process thereof, which can achieve precise positioning and automatic loading, improve production efficiency, and reduce production costs caused by grinding wheel wear.

[0004] According to a first aspect of the present invention, there is provided a trocar sharpening machine, comprising a frame; a base, comprising a lower base and a middle base, wherein the lower base is slidably arranged on the frame along the Y-axis, and the middle base is slidably arranged on the lower base along the X-axis; an angle adjustment mechanism is arranged on the middle base and used to adjust the elevation angle of a workpiece; a needle shaft is rotatably arranged on the angle adjustment mechanism, and the needle shaft is used to clamp the workpiece; an automatic loading and unloading mechanism is arranged on the angle adjustment mechanism, and the automatic loading and unloading mechanism can deliver the workpiece to the needle shaft; a grinding wheel adjustment mechanism is arranged on the frame; a grinding wheel is rotatably arranged on the grinding wheel adjustment mechanism, and the grinding wheel adjustment mechanism can drive the grinding wheel to approach or move away from the needle shaft.

[0005] According to a trocar sharpening machine described in the first aspect of the present invention, the angle adjustment mechanism includes: an angle adjustment plate, a hinge shaft, an adjustment block and an adjustment screw, the hinge shaft is arranged at one end of the middle base, one end of the angle adjustment plate is rotatably arranged on the hinge shaft, the adjustment block is slidably arranged on the middle base along the Y-axis, the other end of the angle adjustment plate is mounted on the adjustment block, the adjustment screw is screwed on the adjustment block, one end of the adjustment screw is rotatably connected to the middle base, and the other end of the adjustment screw is free.

[0006] According to the trocar sharpening machine described in the first aspect of the present invention, the angle adjustment mechanism further comprises a locking screw, the locking screw is screwed onto the middle base, and the end of the locking screw can abut against the angle adjustment plate.

[0007] According to a sleeve needle sharpening machine described in the first aspect of the present invention, the automatic loading and unloading mechanism includes a loading platform, a material bin, a first pushing device and a second pushing device, the loading platform is arranged on the angle adjustment plate, the material bin is arranged on the loading platform, a plurality of workpieces can be stacked one by one in the material bin in an orderly manner, the first pushing device is arranged on the angle adjustment plate, the first pushing device can push the workpiece on the surface of the loading platform to slide along the X-axis, the second pushing device is arranged on the angle adjustment plate, and the second pushing device is used to push the workpiece into the needle shaft.

[0008] According to a trocar sharpening machine described in the first aspect of the present invention, the first pushing device includes a first pushing cylinder and a first pushing plate, the first pushing cylinder is arranged on the angle adjustment plate, the first pushing plate is slidably arranged on the loading platform, and the first pushing plate is connected to the output end of the first pushing cylinder.

[0009] According to a sleeve needle sharpening machine described in the first aspect of the present invention, the second pushing device includes a pushing rail, a pushing seat, a second pushing cylinder and a second pushing plate, the pushing rail is arranged on the angle adjustment plate along the Y-axis, the pushing seat can be slidably arranged on the pushing rail, the second pushing cylinder is arranged on the pushing seat, the second pushing plate is arranged at the output end of the second pushing cylinder, the second pushing plate can approach or move away from the needle shaft under the drive of the second pushing cylinder, and the second pushing plate is provided with a pushing groove, and the protrusion on the workpiece can be accommodated in the pushing groove.

[0010] According to a trocar sharpening machine described in the first aspect of the present invention, the second pushing device also includes a second pushing plate mounting bracket, the second pushing plate mounting bracket is arranged at the output end of the second pushing cylinder, the second pushing plate mounting bracket is provided with a connecting groove, and the output end of the second pushing cylinder is inserted into the connecting groove and fixed by a fastener.

[0011] According to a sleeve needle sharpening machine described in the first aspect of the present invention, the automatic loading and unloading mechanism also includes an automatic discharging mechanism, the automatic discharging mechanism includes a discharging plate, a discharging cylinder and a discharging cylinder mounting frame, the discharging cylinder mounting frame is arranged on the angle adjustment plate, the discharging cylinder is arranged on the discharging cylinder mounting frame, the discharging plate is arranged at the output end of the discharging cylinder, the discharging cylinder can drive the discharging plate to approach or move away from the first push plate, and when the discharging plate moves away from the first push plate, a discharging channel is formed between the discharging plate and the first push plate.

[0012] According to a sleeve needle sharpening machine described in the first aspect of the present invention, the needle shaft includes a needle shaft body and an elastic clamping mechanism, the needle shaft body is rotatably arranged on the angle adjustment mechanism, a receiving groove is provided on the needle shaft body, the receiving groove is used to accommodate a workpiece, and the elastic clamping mechanism is arranged on the needle shaft body, and the elastic clamping mechanism is used to clamp the workpiece.

[0013] According to a second aspect of the present invention, there is provided a sharpening process, which uses a trocar sharpening machine according to the first aspect, comprising the following steps:

[0014] Material preparation: stack the workpieces in the silo in an orderly manner;

[0015] Grinding angle adjustment: Turn the adjusting screw to drive the adjusting block to slide along the Y-axis direction, and then drive the angle adjustment plate to rotate along the hinge axis, and finally lock it with the locking screw;

[0016] Base adjustment: adjust the lower base to determine the push limit, and then adjust the middle base to determine the centering of the needle shaft and the grinding wheel;

[0017] Loading: The workpiece in the bin automatically falls onto the loading platform, the output end of the first push cylinder is recovered, driving the first push plate to push the workpiece along the X-axis, so that the workpiece is aligned with the receiving slot, and then the second push cylinder extends, driving the second push plate to approach the workpiece, so that the protrusion of the workpiece is stuck in the push slot, and the push seat slides along the Y-axis direction, driving the workpiece to slide into the receiving slot;

[0018] Sharpening: The grinding wheel is driven by the grinding wheel adjustment mechanism to approach the workpiece for grinding;

[0019] Discharging: The discharging plate is driven by the discharging cylinder to move away from the loading platform to open the discharging channel, and then the push seat slides along the Y-axis direction, driving the workpiece to slide out of the receiving groove, and then the workpiece falls into the discharging channel under the action of gravity to complete the discharging.

[0020] According to the present invention, at least the following beneficial effects are achieved: a sleeve needle sharpening machine includes a frame, a base, an angle adjustment mechanism, a needle shaft, an automatic loading and unloading mechanism, a grinding wheel adjustment mechanism and a grinding wheel. The base includes a lower base and a middle base. The lower base is slidably arranged on the frame along the Y axis. The middle base is slidably arranged on the lower base along the X axis. The angle adjustment mechanism is arranged on the middle base for adjusting the elevation angle of the workpiece. The needle shaft is rotatably arranged on the angle adjustment mechanism. A workpiece clamping assembly for clamping the workpiece is arranged on the needle shaft. The automatic loading and unloading mechanism is arranged on the angle adjustment mechanism. The automatic loading and unloading mechanism can deliver the workpiece into the needle shaft. The grinding wheel adjustment mechanism is arranged on the frame. The grinding wheel is rotatably arranged on the grinding wheel adjustment mechanism. The grinding wheel adjustment mechanism can drive the grinding wheel to approach or move away from the needle shaft. The position of the needle axis in the horizontal plane is determined by the middle base and the lower base, and then the sharpening angle is determined by the angle adjustment mechanism. The sharpening work can be completed by raising and lowering the grinding wheel through the grinding wheel adjustment mechanism, completing the sharpening process under precise positioning, reducing damage to the grinding wheel, avoiding increased production costs due to excessive wear of the grinding wheel, and improving production efficiency.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0023] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the angle adjustment mechanism of a preferred embodiment of the present invention;

[0025] Figure 3 It is a cross-sectional view of the angle adjustment mechanism of a preferred embodiment of the present invention;

[0026] Figure 4 The structure diagram of the automatic loading and unloading mechanism of the preferred embodiment of the present invention is as follows Figure 1 ;

[0027] Figure 5 The structure diagram of the automatic loading and unloading mechanism of the preferred embodiment of the present invention is as follows Figure 2 ;

[0028] Figure 6 It is a side view of the automatic loading and unloading mechanism of a preferred embodiment of the present invention;

[0029] Figure 7 for Figure 6 A-direction view;

[0030] Figure 8 for Figure 7Sectional view of the middle BB section;

[0031] Fig. 9 It is a front view of the needle shaft of a preferred embodiment of the present invention;

[0032] Fig.10 A side view of a needle shaft of a preferred embodiment of the present invention;

[0033] Fig.11 A cross-sectional view of a needle shaft according to a preferred embodiment of the present invention (with a workpiece);

[0034] Fig.12 is a cross-sectional view of the workpiece;

[0035] Fig.13 Detailed view of workpiece grinding. DETAILED DESCRIPTION

[0036] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are 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, and do not indicate or imply 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 a limitation on the present invention.

[0038] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] Reference Figures 1 to 13A needle sharpening machine according to an embodiment of the first aspect of the present invention comprises a frame 10, a base 20, an angle adjustment mechanism 30, a needle shaft 40, an automatic loading and unloading mechanism 60, a grinding wheel adjustment mechanism 70 and a grinding wheel 80. The base 20 comprises a lower base 21 and a middle base 22. The lower base 21 is slidably arranged on the frame 10 along the Y axis. The middle base 22 is slidably arranged on the lower base 21 along the X axis. The angle adjustment mechanism 30 is arranged on the middle base 22 for adjusting the elevation angle of the workpiece. The needle shaft 40 is rotatably arranged on the angle adjustment mechanism 30. The needle shaft 40 is used to clamp the workpiece. The automatic loading and unloading mechanism 60 is arranged on the angle adjustment mechanism 30. The automatic loading and unloading mechanism 60 can deliver the workpiece into the needle shaft 40. The grinding wheel adjustment mechanism 70 is arranged on the frame 10. The grinding wheel 80 is rotatably arranged on the grinding wheel adjustment mechanism 70. The grinding wheel adjustment mechanism 70 can drive the grinding wheel 80 to approach or move away from the needle shaft 40.

[0041] It is worth noting that in the embodiment of the first aspect of the present invention, the position of the needle axis in the horizontal plane is determined by the middle base 22 and the lower base 21, and then the sharpening angle is determined by the angle adjustment mechanism 30. The sharpening work can be completed by raising and lowering the grinding wheel through the grinding wheel adjustment mechanism 70, completing the sharpening process under precise positioning, reducing damage to the grinding wheel, avoiding increased production costs due to excessive wear of the grinding wheel, and improving production efficiency.

[0042] It is worth noting that the X-axis direction and the Y-axis direction in the text are the X-axis direction and the Y-axis direction shown in the coordinate system in the drawings of the specification.

[0043] Reference Figure 2 and Figure 3 The angle adjustment mechanism 30 includes an angle adjustment plate 31, a hinge shaft 32, an adjustment block 33 and an adjustment screw 34. The hinge shaft 32 is disposed at one end of the middle base 22. One end of the angle adjustment plate 31 is rotatably disposed on the hinge shaft 32. The adjustment block 33 is slidably disposed on the middle base 22 along the Y axis. The other end of the angle adjustment plate 31 is mounted on the adjustment block 33. The adjustment screw 34 is screwed on the adjustment block 33. One end of the adjustment screw 34 is rotatably connected to the middle base 22, and the other end of the adjustment screw 34 is free.

[0044] It can be understood that by rotating the adjusting screw 34, the adjusting block 33 can be driven to move closer to or away from the hinge shaft 32, and the angle adjustment plate 31, one end of which is overlapped on the adjusting block 33, is deflected under the support of the adjusting block 33, thereby realizing the adjustment of the inclination angle of the angle adjustment plate 31. In this way, the angle adjustment is realized, the rotation is changed into the displacement of the adjusting block 33, and then the displacement of the adjusting block 33 is converted into the angle deflection of the angle adjustment plate 31, which can greatly increase the accuracy of the angle adjustment and realize the precise adjustment of the sharpening angle.

[0045] Reference Figure 2 and Figure 3 The angle adjustment mechanism 30 further includes a locking screw 35 , which is screwed on the middle base 20 , and an end of the locking screw 35 can abut against the angle adjustment plate 31 .

[0046] It is worth noting that, in some other embodiments of the present invention, the angle adjustment plate 31 can be fixed by a locking screw 35 to avoid processing errors caused by vibration.

[0047] Reference Figures 4 to 8 The automatic loading and unloading mechanism 60 includes a loading platform 61, a material bin 62, a first pushing device 63 and a second pushing device 64. The loading platform 61 is arranged on the angle adjustment plate 31, and the material bin 62 is arranged on the loading platform 61. Several workpieces can be stacked one by one in the material bin 62 in an orderly manner. The first pushing device 63 is arranged on the angle adjustment plate 31. The first pushing device 63 can push the workpiece to slide along the X-axis on the surface of the loading platform 61. The second pushing device 64 is arranged on the angle adjustment plate 31. The second pushing device 64 is used to push the workpiece into the needle shaft 40.

[0048] Reference Figures 4 to 8 The first pushing device 63 includes a first pushing cylinder 631 and a first pushing plate 632 . The first pushing cylinder 631 is arranged on the angle adjustment plate 31 . The first pushing plate 632 is slidably arranged on the loading platform 61 . The first pushing plate 632 is connected to the output end of the first pushing cylinder 631 .

[0049] It can be understood that the first push plate 632 , driven by the first push cylinder 631 , can push the workpiece in contact with the loading platform 61 among the stacked workpieces along the X-axis, so that the workpiece is aligned with the receiving groove 411 .

[0050] Reference Figures 4 to 8 The second pushing device 64 includes a pushing rail 641, a pushing seat 642, a second pushing cylinder 643 and a second pushing plate 644. The pushing rail 641 is arranged on the angle adjustment plate 31 along the Y-axis, the pushing seat 642 is slidably arranged on the pushing rail 641, the second pushing cylinder 643 is arranged on the pushing seat 642, and the second pushing plate 644 is arranged at the output end of the second pushing cylinder 643. The second pushing plate 644 can approach or move away from the needle shaft 40 under the drive of the second pushing cylinder 643. The second pushing plate 644 is provided with a pushing groove 644a, and the protrusion on the workpiece can be accommodated in the pushing groove 644a.

[0051] It can be understood that, driven by the second pushing cylinder 643, the second pushing plate 644 can enable the pushing slot 644a to grab the protrusion on the workpiece, and then push the pushing seat 642 through the power source, driving the second pushing cylinder 643 and the second pushing plate 644 to slide along the Y-axis with the workpiece, so that the workpiece slides into the accommodating groove 411.

[0052] Reference Figures 4 to 8 The second pushing device 64 also includes a second pushing plate mounting bracket 645, which is arranged at the output end of the second pushing cylinder 643. The second pushing plate mounting bracket 645 is provided with a connecting groove 645a, and the output end of the second pushing cylinder 643 is inserted into the connecting groove 645a and fixed by fasteners.

[0053] It can be understood that in some embodiments of the present invention, the second push plate mounting bracket 645 is fixed by means of the connecting groove 645a in cooperation with fasteners, and the installation position of the second push plate 644 can also be adjusted through the connecting groove 645a, thereby increasing the adaptability of the equipment to workpieces of different models.

[0054] Reference Figures 4 to 8 The automatic loading and unloading mechanism 60 also includes an automatic discharging mechanism 65, which includes a discharging plate 651, a discharging cylinder 652 and a discharging cylinder mounting frame 653. The discharging cylinder mounting frame 653 is arranged on the angle adjustment plate 31, the discharging cylinder 652 is arranged on the discharging cylinder mounting frame 653, and the discharging plate 651 is arranged at the output end of the discharging cylinder 652. The discharging cylinder 652 can drive the discharging plate 651 to approach or move away from the first push plate 632. When the discharging plate 651 moves away from the first push plate 632, a discharging channel is formed between the discharging plate 651 and the first push plate 632.

[0055] It is worth noting that in some embodiments of the present invention, the discharge plate 651 is driven by the discharge cylinder 652 to move away from the loading platform 61 to open the discharge channel, and then the push seat 642 slides along the Y-axis direction, driving the workpiece to slide out of the receiving groove 411, and then the workpiece falls into the discharge channel under the action of gravity to complete the discharge.

[0056] Reference Figures 9 to 11 The needle shaft 40 includes a needle shaft body 41 and an elastic clamping mechanism 42. The needle shaft body 41 is rotatably arranged on the angle adjustment mechanism 30. A receiving groove 411 is opened on the needle shaft body 41. The receiving groove 411 is used to accommodate the workpiece. The elastic clamping mechanism 42 is arranged on the needle shaft body 41. The elastic clamping mechanism 42 is used to clamp the workpiece.

[0057] It is understandable that after the workpiece enters the receiving groove 411 , the workpiece can be fixed by the elastic clamping mechanism 42 to perform sharpening.

[0058] Reference Figures 1 to 13 A second aspect of the present invention is a trocar sharpening process, which uses a trocar sharpening machine according to the first aspect, and comprises the following steps:

[0059] Material preparation: stacking the workpieces in the material bin 62 in an orderly manner;

[0060] Grinding angle adjustment: Rotate the adjusting screw 34 to drive the adjusting block 33 to slide along the Y-axis direction, thereby driving the angle adjustment plate 31 to rotate along the hinge shaft 32, and finally lock it with the locking screw 35;

[0061] Base adjustment: adjust the lower base 21 to determine the push limit, and then adjust the middle base 22 to determine the centering of the needle shaft 40 and the grinding wheel 80;

[0062] Loading: The workpiece in the bin 62 automatically falls onto the loading platform 61, and the output end of the first push cylinder 631 is recovered, driving the first push plate 632 to push the workpiece along the X-axis, so that the workpiece is aligned with the receiving groove 411, and then the second push cylinder 643 extends out, driving the second push plate 644 to approach the workpiece, so that the protrusion of the workpiece is stuck in the push slot 644a, and then the push seat 642 slides along the Y-axis direction, driving the workpiece to slide into the receiving groove 411;

[0063] Sharpening: The grinding wheel 80 is driven by the grinding wheel adjustment mechanism 70 to approach the workpiece for grinding;

[0064] Discharging: The discharging plate 651 is driven by the discharging cylinder 652 to move away from the loading platform 61 to open the discharging channel, and then the pushing seat 642 slides along the Y-axis direction, driving the workpiece to slide out of the receiving groove 411, and then the workpiece falls into the discharging channel under the action of gravity to complete the discharging.

[0065] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A trocar sharpening machine, characterized in that: include: Frame (10); A base (20), comprising a lower base (21) and a middle base (22), wherein the lower base (21) is slidably arranged on the frame (10) along the Y axis, and the middle base (22) is slidably arranged on the lower base (21) along the X axis; An angle adjustment mechanism (30) is arranged on the middle base (22) and is used to adjust the elevation angle of the workpiece; A needle shaft (40) is rotatably arranged on the angle adjustment mechanism (30), and the needle shaft (40) is used to clamp a workpiece; An automatic loading and unloading mechanism (60) is arranged on the angle adjustment mechanism (30), and the automatic loading and unloading mechanism (60) can deliver the workpiece to the needle shaft (40); A grinding wheel adjustment mechanism (70) is arranged on the frame (10); A grinding wheel (80) is rotatably disposed on the grinding wheel adjustment mechanism (70), and the grinding wheel adjustment mechanism (70) can drive the grinding wheel (80) to approach or move away from the needle shaft (40); The angle adjustment mechanism (30) comprises: an angle adjustment plate (31), a hinge shaft (32), an adjustment block (33) and an adjustment screw (34); the hinge shaft (32) is arranged at one end of the middle base (22); one end of the angle adjustment plate (31) is rotatably arranged on the hinge shaft (32); the adjustment block (33) is slidably arranged on the middle base (22) along the Y axis; the other end of the angle adjustment plate (31) is mounted on the adjustment block (33); the adjustment screw (34) is screwed on the adjustment block (33); one end of the adjustment screw (34) is rotatably connected to the middle base (22); and the other end of the adjustment screw (34) is free; The angle adjustment mechanism (30) further comprises a locking screw (35), wherein the locking screw (35) is screwed on the middle base (20), and an end of the locking screw (35) can abut against the angle adjustment plate (31); The automatic loading and unloading mechanism (60) comprises a loading platform (61), a material bin (62), a first pushing device (63) and a second pushing device (64); the loading platform (61) is arranged on the angle adjustment plate (31); the material bin (62) is arranged on the loading platform (61); a plurality of workpieces can be stacked one by one in the material bin (62) in an orderly manner; the first pushing device (63) is arranged on the angle adjustment plate (31); the first pushing device (63) can push the workpiece to slide along the X-axis on the surface of the loading platform (61); the second pushing device (64) is arranged on the angle adjustment plate (31); the second pushing device (64) is used to push the workpiece into the needle shaft (40); The first pushing device (63) comprises a first pushing cylinder (631) and a first pushing plate (632), wherein the first pushing cylinder (631) is arranged on the angle adjustment plate (31), the first pushing plate (632) is slidably arranged on the loading platform (61), and the first pushing plate (632) is connected to the output end of the first pushing cylinder (631); The second pushing device (64) includes a pushing rail (641), a pushing seat (642), a second pushing cylinder (643) and a second pushing plate (644); the pushing rail (641) is arranged on the angle adjustment plate (31) along the Y-axis; the pushing seat (642) can be slidably arranged on the pushing rail (641); the second pushing cylinder (643) is arranged on the pushing seat (642); the second pushing plate (644) is arranged at the output end of the second pushing cylinder (643); the second pushing plate (644) can approach or move away from the needle shaft (40) under the drive of the second pushing cylinder (643); the second pushing plate (644) is provided with a pushing groove (644a); the protrusion on the workpiece can be accommodated in the pushing groove (644a).

2. A trocar sharpening machine according to claim 1, characterized in that: The second pushing device (64) also includes a second pushing plate mounting frame (645), which is arranged at the output end of the second pushing cylinder (643). The second pushing plate mounting frame (645) is provided with a connecting groove (645a), and the output end of the second pushing cylinder (643) is inserted into the connecting groove (645a) and fixed by a fastener.

3. A trocar sharpening machine according to claim 2, characterized in that: The automatic loading and unloading mechanism (60) also includes an automatic discharging mechanism (65), which includes a discharging plate (651), a discharging cylinder (652) and a discharging cylinder mounting frame (653). The discharging cylinder mounting frame (653) is arranged on the angle adjustment plate (31), and the discharging cylinder (652) is arranged on the discharging cylinder mounting frame (653). The discharging plate (651) is arranged at the output end of the discharging cylinder (652). The discharging cylinder (652) can drive the discharging plate (651) to approach or move away from the first push plate (632). When the discharging plate (651) moves away from the first push plate (632), a discharging channel is formed between the discharging plate (651) and the first push plate (632).

4. A trocar sharpening machine according to claim 3, characterized in that: The needle shaft (40) comprises a needle shaft body (41) and an elastic clamping mechanism (42); the needle shaft body (41) is rotatably arranged on the angle adjustment mechanism (30); a receiving groove (411) is provided on the needle shaft body (41); the receiving groove (411) is used to accommodate a workpiece; the elastic clamping mechanism (42) is arranged on the needle shaft body (41); and the elastic clamping mechanism (42) is used to clamp the workpiece.

5. A trocar sharpening process, using a trocar sharpening machine as claimed in claim 4, characterized in that: The following steps are involved: Material preparation: stacking the workpieces in an orderly manner in the material bin (62); Grinding angle adjustment: rotating the adjusting screw (34) drives the adjusting block (33) to slide along the Y-axis direction, thereby driving the angle adjusting plate (31) to rotate along the hinge shaft (32), and finally locking it by the locking screw (35); Base adjustment: adjust the lower base (21) to determine the advance limit, and then adjust the middle base (22) to determine the centering of the needle shaft (40) and the grinding wheel (80); Loading: The workpiece in the material bin (62) automatically falls onto the loading platform (61), the output end of the first pushing cylinder (631) is recovered, driving the first pushing plate (632) to push the workpiece along the X-axis so that the workpiece is aligned with the receiving groove (411), and then the second pushing cylinder (643) extends to drive the second pushing plate (644) to approach the workpiece, so that the protrusion of the workpiece is stuck in the pushing groove (644a), and then the pushing seat (642) slides along the Y-axis direction, driving the workpiece to slide into the receiving groove (411); Grinding: The grinding wheel (80) is driven by the grinding wheel adjustment mechanism (70) to approach the workpiece for grinding; Discharging: The discharging plate (651) is driven by the discharging cylinder (652) to move away from the loading platform (61) to open the discharging channel, and then the pushing seat (642) slides along the Y-axis direction, driving the workpiece to slide out of the receiving groove (411), and then the workpiece falls into the discharging channel under the action of gravity to complete the discharging.

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