CN105965332B

CN105965332B - Pruning shear blade grinding tool

Info

Publication number: CN105965332B
Application number: CN201610504859.5A
Authority: CN
Inventors: 李庆; 吴亚兰; 方慧敏; 胡如方; 邵洋; 杜文文; 赵文英; 蒋远远; 江德松; 杨金国; 彭荣富; 殷潇; 高凯迪; 马奔驰; 张飞龙; 李晓明; 项煜; 刘盼明
Original assignee: Anhui Technical College of Mechanical and Electrical Engineering
Current assignee: Anhui Technical College of Mechanical and Electrical Engineering
Priority date: 2016-07-01
Filing date: 2016-07-01
Publication date: 2023-03-21
Anticipated expiration: 2036-07-01
Also published as: CN105965332A

Abstract

The invention discloses a pruning shear blade grinding jig which is fixedly arranged on an index plate and comprises a base plate and a pressing plate, wherein the pressing plate, the base plate and the index plate are fixedly connected through a fastening bolt sequentially from top to bottom, a flange matched with a ridge of a pruning shear blade is arranged at the bottom of the pressing plate, a clamping edge matched with a knife face of the pruning shear blade is arranged at the upper part of the pressing plate, and the pruning shear blade is fixedly clamped between the clamping edge of the pressing plate and the base plate. The pruning shear blade can be fixedly arranged on the special pruning shear blade grinding machine through the tool, so that the full-automatic processing of the grinding of the cutting edge of the pruning shear blade is realized, and the grinding precision and the processing efficiency are greatly improved.

Description

Pruning scissors blade grinding tool

Technical Field

The invention relates to the technical field of blade sharpening devices, in particular to a pruning shear blade grinding jig.

Background

The pruning shears are garden tools used for pruning branches and leaves of plants, and refer to patent publication No. CN301991402S, which discloses a pruning shears comprising two blades, one is a blunt blade without need of edging, the other is a sharp blade with need of edging, the cutting edge of the sharp blade is a single-side cutting edge, the cutting edge is in the shape of a circular arc, so that the force used during pruning gradually enables the cutting edge of the sharp blade to enter branches, the blunt blade plays a role in supporting the branches, the branches are not broken, and the pruning shears are labor-saving. However, the cutting edge of the prior pruning shear blade is ground manually by a special clamp of an experienced worker, before grinding, the inclined surface of the blade surface is firstly processed by a numerical control lathe, then a cutting edge is finely ground on the inclined surface of the blade surface by using a grinding wheel, the efficiency is very low during large-scale processing production, the precision of the cutting edge is difficult to accurately control, and the consistency of the shapes of the cutting edges of the blades in batches is difficult to ensure.

Disclosure of Invention

The invention aims to provide a pruning shear blade grinding jig aiming at the defects of the prior art, and the pruning shear blade can be fixedly arranged on a special pruning shear blade grinding machine through the jig, so that the full-automatic processing of the pruning shear blade cutting edge grinding is realized, and the grinding precision and the processing efficiency are greatly improved.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a pruning scissors blade grinding tool, tool fixed mounting is on the graduated disk, the tool includes base plate and clamp plate, base plate and graduated disk are from last to down according to the preface through tightly deciding bolt fixed connection, the bottom of clamp plate be equipped with the spine assorted flange of pruning scissors blade, the upper portion of clamp plate be equipped with the knife face complex contained side of pruning scissors blade, pruning scissors blade fixation clamp is arranged in between the contained side and the base plate of clamp plate.

Preferably, the jig is used for clamping two pruning shear blades, the pressing plate is provided with two flanges which are symmetrically arranged, the pressing plate is provided with two clamping edges which are symmetrically arranged, and when the two pruning shear blades are clamped on the jig, the cutting edges of the two pruning shear blades are positioned on the same circular arc. Every tool can press from both sides dress two pruning scissors pieces to the sword of two pruning scissors pieces is relative, thereby can make the circumferential motion bistrique in the frame once grind two pruning scissors pieces, further improves machining efficiency.

Furthermore, the upper section of the fastening bolt is a cylinder, the upper end face of the fastening bolt is provided with an inner hexagonal counter bore, the upper section of the fastening bolt adopts the cylinder, the fastening bolt can be prevented from being unscrewed by mistake in the machining process, and when the fastening bolt is screwed up and unscrewed, safety is ensured by means of a special hexagonal wrench which is matched with the inner hexagonal counter bore for use.

After adopting the technical scheme, compared with the prior art, the invention has the advantages that:

when the pruning shear blade is installed, the fastening bolt is firstly screwed, then the ridge of the pruning shear blade is tightly abutted against the flange of the pressing plate, and then the fastening bolt is screwed so that the pruning shear blade is tightly clamped between the clamping edge of the pressing plate and the base plate, and meanwhile, the pressing plate and the base plate are fixed on the index plate. In order to ensure that the knife spine of the pruning shear blade is tightly abutted against the flange of the pressing plate, the detection can be carried out by means of a special fixture, namely, when the pruning shear blade is arranged between the pressing plate and the base plate, the clamping bolt is screwed and tightened to clamp after the detection and the positioning of the fixture, so that the pruning shear blade is ensured to be installed in place. Can realize the full automated processing of pruning scissors blade cutting edge grinding with pruning scissors blade fixed mounting on special pruning scissors blade milling machine through this tool, improve grinding precision and machining efficiency by a wide margin.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the table and index plate of the present invention;

FIG. 3 is a schematic perspective view of a jig according to the present invention;

FIG. 4 is an exploded view of the jig of the present invention;

FIG. 5 is a schematic view of the construction of the platen of the present invention;

FIG. 6 is a schematic top view of the index plate of the present invention;

FIG. 7 isbase:Sub>A schematic sectional view of the structure A-A in FIG. 6;

FIG. 8 is a schematic view of a first grinding station of the present invention;

FIG. 9 is an enlarged partial schematic view of a first grinding station of the present invention;

fig. 10 is a structural view of the grinding state of the circumferential motion grinding head of the invention;

FIG. 11 is a schematic cross-sectional view of B-B in FIG. 10;

FIG. 12 is a schematic view of a fourth grinding station of the present invention;

fig. 13 is a structural schematic diagram of the grinding state of the radial motion grinding head of the invention.

In the figure, 1. An operation table; 2. a stepping motor; 3. an index plate; 4. a turntable; 5. positioning a plate; 6. positioning the air cylinder; 7. positioning blocks; 8. positioning holes; 9. a feeding station; 10. a first grinding station; 11. a second grinding station; 12. a third grinding station; 13. a fourth grinding station; 14. a discharge station; 15. a jig; 16. a substrate; 17. pressing a plate; 18. tightening the bolt; 19. pruning shear blades; 20. a card slot; 21. blocking edges; 22. clamping edges; 23. a grinding mechanism; 24. a frame; 25. a sliding table; 26. a radial driving cylinder; 27. a slider; 28. a grinding head driving motor; 29. a grinding head moving in the circumferential direction; 30. a radially moving grinding head; 31. lifting the ejector rod; 32. a screw rod; 33. a guide nut; 34. lifting a motor; 35. a support bar; 36. a fluted disc; 37. a pulley; 38. a rotary drive motor; 39. the gears are driven.

Detailed Description

The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.

Referring to fig. 1-13, a full-automatic grinding machine for pruning shears blade.

The device comprises an operating platform, and referring to fig. 1, 2 and 7, an index plate 3 controlled by a stepping motor 2 is arranged on the operating platform 1, the stepping motor 2 is fixedly arranged on the operating platform 1, a rotary table 4 used for bearing the index plate 3 is arranged at the upper end of the stepping motor 2, a driving shaft of the stepping motor 2 penetrates through the center of the rotary table 4 to be connected with the index plate 3, and the stepping motor 2 drives the index plate 3 to rotate on the rotary table 4 in a stepping mode. The operating table 1 is further fixedly connected with a positioning disc 5, a positioning block 7 driven and controlled by a positioning cylinder 6 is arranged on the positioning disc 5, a positioning hole 8 in limit fit with the positioning block 7 is formed in the dividing disc 3, the upper end of the positioning block 7 is conical so that the positioning block 7 can slide into the positioning hole 8 in a guiding mode, the dividing disc 3 can be accurately positioned and corner errors are eliminated, the positioning cylinder 6 drives the positioning block 7 to descend and separate from the positioning hole 8, the dividing disc 3 can rotate in a stepping mode under the driving of the stepping motor 2, when the dividing disc 3 rotates in place, the positioning cylinder 6 drives the positioning block 7 to ascend and insert into the positioning hole 8, the positioning function is achieved on the dividing disc 3, and whether the dividing disc 3 rotates in place or not can be judged through whether the positioning block 7 is inserted into the positioning hole 8, and misoperation is avoided.

Referring to fig. 1, a feeding station 9, a first grinding station 10, a second grinding station 11, a third grinding station 12, a fourth grinding station 13 and an unloading station 14 are sequentially arranged on an operating table 1 along the periphery of an index plate 3, six jigs 15 for clamping a pruning shear blade 19 are arranged on the index plate 3 at equal intervals, referring to fig. 3, 4 and 5, each jig 15 comprises a base plate 16 and a pressing plate 17, the base plate 16 and the index plate 3 are sequentially and fixedly connected through a fastening bolt 18 from top to bottom, a clamping groove 20 in limited fit with a hinged pin of the pruning shear blade 19 is arranged on the base plate 16, a retaining edge 21 matched with the ridge of the pruning shear blade 19 is arranged at the bottom of the pressing plate 17, a clamping edge 22 matched with the pruning shear blade 19 is arranged at the upper part of the pressing plate 17, and the pruning shear blade 19 is fixedly clamped between the clamping edge 22 of the pressing plate 17 and the base plate 16. When the pruning shear blade 19 is installed, the fastening bolt 18 is firstly screwed loose, then the spine of the pruning shear blade 19 is tightly abutted against the flange 21 of the pressure plate 17, and then the fastening bolt 18 is screwed tightly, so that the pruning shear blade 19 is tightly clamped between the clamping edge 22 of the pressure plate 17 and the base plate 16, and the pressure plate 17 and the base plate 16 are fixed on the indexing disc 3. In order to ensure that the ridge of the pruning shears blade 19 is tightly abutted against the flange 21 of the pressing plate 17, the detection can be carried out by using a special fixture, namely when the pruning shears blade 19 is arranged between the pressing plate 17 and the base plate 16, the pruning shears blade 19 is tightly clamped by screwing the fastening bolt 18 after being detected and positioned by the fixture, so as to ensure that the pruning shears blade 19 is installed in place.

The jig 15 is used for clamping two pruning shear blades 19, the pressing plate 17 is provided with two flanges 21 which are symmetrically arranged, the pressing plate 17 is provided with two clamping edges 22 which are symmetrically arranged, and when the two pruning shear blades 19 are clamped on the jig 15, the cutting edges of the two pruning shear blades 19 are positioned on the same circular arc. Referring to fig. 10, each jig 15 may clamp two pruning shears 19 with the tips of the two pruning shears 19 facing each other, so that the two pruning shears 19 may be ground at a time by the circumferentially moving grinding heads 29 on the frame 24, further improving the processing efficiency. Tightly decide 18 upper segments of bolt and be the cylinder, tightly decide the up end of bolt 18 and be equipped with the hexagon socket head cap counter bore, tightly decide 18 upper segments of bolt and adopt the cylinder, can prevent to tightly decide bolt 18 and unscrew by the mistake in the course of working, when screwing up and unscrewing tightly decide bolt 18, must ensure safety with the help of the special hexagon spanner with hexagon socket head cap counter bore cooperation use.

The first grinding station 10, the second grinding station 11, the third grinding station 12 and the fourth grinding station 13 are respectively provided with a grinding mechanism 23 which is in one-to-one correspondence with the jigs 15 on the index plate 3, the grinding mechanism 23 of the first grinding station 10 is used for rough grinding of the inclined surface of the knife face of the pruning shear blade 19, the grinding mechanism 23 of the second grinding station 11 is used for fine grinding of the tail section of the inclined surface of the knife face of the pruning shear blade 19, the grinding mechanism 23 of the third grinding station 12 is used for fine grinding of the cutting edge of the pruning shear blade 19, and the grinding mechanism 23 of the fourth grinding station 13 is used for fine grinding of the starting end of the inclined surface of the knife face of the pruning shear blade 19.

Because the multi-station synchronous grinding is adopted, the full-automatic processing of grinding of the cutting edge of the pruning shear blade 19 is realized, the grinding precision and the processing efficiency are greatly improved, only one common worker needs to carry out loading and unloading operations on the pruning shear blade 19 at the loading station 9 and the unloading station 14, the labor cost is reduced, the processing efficiency is greatly improved, the grinding precision is high, particularly, the consistency of the shape of the cutting edge of the batch pruning shear blade 19 is better, and the product quality is improved.

The grinding mechanism 23 comprises a rack 24 rotatably arranged on the operating table 1, see fig. 8, a sliding table 25 is arranged on the rack 24, one end of the sliding table 25 is hinged to the rack 24, the other end of the sliding table 25 is movably connected with the rack 24 through a lead screw driving mechanism, a sliding block 27 driven and controlled by a radial driving cylinder 26 is arranged on the sliding table 25, a sliding rail matched with the sliding block 27 is arranged on the sliding table 25, an adjustable limiting block is further arranged on the sliding rail and used for limiting the maximum stroke position of the sliding block 27 moving under the driving control of the radial driving cylinder 26, the limiting position of the adjustable limiting block is adjusted and arranged according to the actual grinding depth of the pruning shear blade 19, a circumferential motion grinding head 29 or a radial motion grinding head 30 driven and controlled by a grinding head driving motor 28 is arranged on the sliding block 27, see fig. 9, fig. 10 and fig. 11, wherein a circumferential motion grinding head 29 is arranged on the sliding block 27 of the first grinding station 10, the second grinding station 11 and the third grinding station 12 and is used for transverse grinding of the pruning shear blade 19, see fig. 12 and fig. 13, a radial motion grinding head 30 is used for controlling the radial motion of the sliding block 27 and for providing a linear motion of the sliding block 27 and a thrust grinding head 27.

Referring to fig. 8, a linear guide rail is arranged on the slide block 27, a lifting plate controlled by a lifting motor is arranged on the linear guide rail, the lifting plate is slidably arranged on the linear guide rail through a guide rail bearing, a screw rod in threaded fit with the sliding table 25 is connected to a driving shaft of the lifting motor, when the lifting motor drives the screw rod to rotate, the lifting plate is lifted up and down along the guide rail, and a grinding head driving motor 28 is arranged on the lifting plate. The lifting motor controls the lifting plate to lift on the linear guide rail, so that the grinding head driving motor 28 and the circumferential motion grinding head 29 or the radial motion grinding head 30 are driven to lift up and down relative to the pruning shear blade 19, and the effects of tool setting and tool feeding amount adjustment are achieved.

Referring to fig. 8, the screw rod driving mechanism includes a lifting top rod 31, a screw rod 32, a guiding nut 33 and a lifting motor 34, the lifting motor 34 is installed on the frame 24, the lifting motor 34 drives the screw rod 32 to rotate, the guiding nut 33 is sleeved on the screw rod 32, one end of the lifting top rod 31 is hinged to the guiding nut 33, and the other end of the lifting top rod 31 is hinged to the sliding table 25. Lifting motor 34 drive lead screw 32 rotates, guide nut 33 slides along lead screw 32 axial under the limiting displacement of lead screw 32 drive action and lifting ejector pin 31, thereby drive the relative frame 24 rotation of slip table 25 through lifting ejector pin 31, play the effect of adjusting the grinding angle, lifting motor 34 passes through lead screw 32, the slip table 25 angle is controlled to nut and lifting ejector pin 31, control accuracy is higher, and lead screw 32 has better position locking effect, the grinding process is reliable and stable, thereby guarantee pruning scissors piece 19's quality.

Referring to fig. 1 and 8, a support rod 35 is disposed on the operating table 1 at a position corresponding to the first grinding station 10, the second grinding station 11, the third grinding station 12, and the fourth grinding station 13, a toothed disc 36 is disposed on the support rod 35, one end of the frame 24 is rotatably connected to the support rod 35, a pulley 37 is disposed at a lower portion of the frame 24, a rotary driving motor 38 is disposed on the frame 24, and a driving gear 39 engaged with the toothed disc 36 is disposed on a driving shaft of the rotary driving motor 38. The driving gear 39 is driven by the rotary driving motor 38 to rotate around the fluted disc 36, so as to drive the rack 24 to rotate on the operating platform 1 by taking the supporting rod 35 as an axis, the axis of the supporting rod 35 is superposed with the axis of the jig 15, so that the circumferential motion grinding head 29 on the rack 24 can perform circumferential grinding motion along the arc where the cutting edge of the pruning shear blade 19 is located, and the rotary driving motor 38 drives the rack 24 to rotate through the cooperation of the driving gear 39 and the fluted disc 36, so as to achieve the effects of automatic grinding and grinding position adjustment.

A processing method for grinding the pruning shear blade 19 by utilizing the full-automatic grinding machine for the pruning shear blade comprises the following steps:

1) The grinding mechanism 23 on the first grinding station 10, the second grinding station 11, the third grinding station 12 and the fourth grinding station 13 is adjusted, the grinding mechanism comprises a lifting motor which drives a lifting plate to move up and down along a linear guide rail to complete tool setting and tool feeding amount adjusting operation, a radial driving cylinder 26 drives a control slide block 27 to move linearly along a sliding table 25 to complete grinding depth adjusting operation, a lifting motor 34 controls the sliding table 25 to turn over through a lead screw 32, a nut and a lifting ejector rod 31 to complete grinding angle adjusting operation, and a rotary driving motor 38 controls a rack 24 to rotate through a pneumatic gear and a fluted disc 36 to complete grinding range adjusting operation of a circumferential motion grinding head 29 or a radial motion grinding head 30; 2) Fixedly clamping a pruning shear blade 19 on a jig 15 of the feeding station 9; 3) In the first grinding station 10, the grinding mechanism 23 on the station is used for roughly grinding the slope of the tool face of the pruning shear blade 19; 4) In the second grinding station 11, the grinding mechanism 23 on the station is used for finely grinding the bevel of the pruning shear blade 19; 5) In the third grinding station 12, the cutting edge of the pruning shear blade 19 is finely ground by a grinding mechanism 23 on the station; 6) In the fourth grinding station 13, the grinding mechanism 23 on the station is used for finely grinding the starting end of the slope of the blade face of the pruning shear blade 19; 7) At the discharge station 14, the pruning shears blade 19 is discharged.

It should be noted here that the first grinding station 10 is used for rough grinding of the slope of the middle blade face of the two pruning shears 19, the second grinding station 11 is used for finish grinding of the slope of the middle blade face of the two pruning shears 19, the third grinding station 12 is used for finish grinding of the cutting edge of the middle blade face of the two pruning shears 19, the range of the middle blade face of the pruning shears 19 is as shown in fig. 9, in order to ensure the consistency of the product, the grinding of the slope of the blade face of each pruning shears 19 is from the beginning (handle) of the slope of the blade face to the end (nose), the fourth grinding station 13 is used for finish grinding of the beginning of the slope of the two pruning shears 19, the position of the beginning of the slope of the pruning shears 19 is as shown by the arrow in fig. 13, the radially moving grinding head 30 of the first grinding station 10 first grinds the beginning of the slope of one blade, and then rotates to the beginning of the slope of the other blade face for finish grinding.

The above-described embodiments are not intended to limit the present invention, and those skilled in the art should understand that they can make equivalents to some features within the spirit and principle of the present invention and all such equivalents are included in the scope of the present invention.

Claims

1. The utility model provides a pruning scissors blade grinding tool, tool (15) fixed mounting is on graduated disk (3), its characterized in that: the pruning shear comprises a base plate (16) and a pressing plate (17), wherein the pressing plate (17), the base plate (16) and an index plate (3) are fixedly connected through a fastening bolt (18) from top to bottom in sequence, a flange (21) matched with a ridge of a pruning shear blade (19) is arranged at the bottom of the pressing plate (17), a clamping edge (22) matched with a knife face of the pruning shear blade (19) is arranged at the upper part of the pressing plate (17), and the pruning shear blade (19) is fixedly clamped between the clamping edge (22) of the pressing plate (17) and the base plate (16); a clamping groove (20) which is in limit fit with the hinged pin of the pruning shear blade 19 is arranged on the base plate (16); the jig (15) is used for clamping two pruning shear blades (19), the pressing plate (17) is provided with two symmetrically arranged flanges (21), the pressing plate (17) is provided with two symmetrically arranged clamping edges (22), and when the two pruning shear blades (19) are clamped on the jig (15), the cutting edges of the two pruning shear blades (19) are positioned in the same circular arc; the upper section of the fastening bolt (18) is a cylinder, and the upper end surface of the fastening bolt (18) is provided with an inner hexagonal counter bore.