CN104029089A - Large-diameter corn milling cutter grinding device - Google Patents

Abstract

The invention provides a large-diameter corn milling cutter grinding device and belongs to the technical field of wood material cutting and processing. The device comprises a power mechanism, a clamping mechanism, a cutter grinding mechanism, an assistant guide mechanism, a distance adjusting mechanism, universal wheels and a fixed supporting mechanism. The total size of the device equals to 1600*10000*674mm, linear movement within two degrees of freedom in a plane can be implemented, the diameter Phi of adaptive cutters ranges from 50 to 500mm, and the length of the adaptive cutters ranges from 0 to 800mm. The cutter grinding device comprises two diamond coated grinding wheels, a magnetic motor is arrange in the cutter grinding device body, and the tail ends of blades are provided with hook-type collecting tanks to collect metal debris produced during cutting grinding. The device comprises three motors, one large motor is directly connected to a gearbox, and two small motors are directly connected to the grinding wheels. The assistant guide mechanism comprises a lighting device, a changeable independent drill bit and a clamping device. The fixed supporting mechanism allows the cutter grinding device body to be in movable and fixed states. The device is capable of implementing cutting grinding process of large-diameter corn milling cutters and has the advantages of wide adjustable range, low powder contamination and high efficiency.

Description

A sharpening device suitable for large diameter corn milling cutter

technical field

The invention relates to a sharpening device, in particular to a sharpening device suitable for large-diameter corn milling cutters, and belongs to the technical field of wood cutting.

Background technique

As an advanced manufacturing process, high-speed cutting technology has become the mainstream development direction of material removal processing. In recent years, high-speed cutting technology has been widely used in the field of metal, plastic and stone material removal, and has begun to emerge in the field of wood processing. The corn milling cutter for wood processing has the advantages of low power consumption, low noise and no dust under high-speed cutting conditions, and can achieve the processing quality of sanding machine grinding, thereby realizing the effect of "replacing grinding by cutting".

However, the blades of corn milling cutters for wood are spirally and dispersedly assembled on a cylindrical cutter body with a larger diameter. After the blades are assembled, machining errors and assembly errors are accumulated, which eventually leads to the fact that the blade tips are not on the same cylindrical surface in the circumferential direction. The cut workpiece has defects such as unevenness and knife lines, which affect the processing quality; on the other hand, the tool has irregular wear after a period of use, and similar workpiece processing quality defects will also occur. Therefore, it is necessary to carry out overall sharpening of newly assembled knives and worn knives.

At present, the sharpening equipment on the market is mainly for household knives. These sharpening equipment have the disadvantages of low efficiency of grinding wheel, short service life of the equipment, low finish of the ground knife and heavy equipment, so for large diameter (50mm-500mm range) The sharpening device of the cylindrical cutter has yet to be designed and created.

Contents of the invention

In view of this, the present invention provides a sharpening device suitable for large-diameter corn milling cutters, which has the characteristics of improving cutter precision, prolonging cutter life, reducing cutter grinding noise, and reducing metal dust pollution.

A sharpening device suitable for large-diameter corn milling cutters, the sharpening device includes a power mechanism, a clamping mechanism, a sharpening mechanism and a distance adjustment mechanism, and the clamping mechanism adopts a three-jaw chuck;

The power mechanism includes a mounting seat, a large AC motor, a box body, a gear set and a stepped shaft. The upper end surface of the mounting seat is processed with an I-shaped chute, and the lower end surface of the box body is processed with a slider; the gear set passes through the stepped shaft horizontally. Installed on the inside of the box, that is, the gear set is set on the stepped shaft, the two ends of the stepped shaft are installed on the box, the large AC motor is installed on the outside of the box, its output shaft is fixedly connected with the stepped shaft, and the box is installed on the On the mounting base, and the sliding block on the box is slidingly matched with the chute on the mounting base, and the main three-jaw chuck is installed on the outside of the box. The position of the main three-jaw chuck corresponds to the large AC motor, and is connected to the last step shaft connection;

The sharpening mechanism includes a fan plug, a fan, a grinding wheel, a grinding wheel cover, a small AC motor, a machine cover and a grinding wheel frame, and the grinding wheel cover and the fan are all made of magnetic materials; the small AC motor is arranged in the machine cover, and the grinding wheel cover is installed on the grinding wheel. On the outer surface, the fan is set on the inner side of the grinding wheel, the fan plug is installed in the center of the fan, the output shaft of the small AC motor passes through the top of the grinding wheel frame, and passes through the center of the fan plug and the two are firmly connected, the grinding wheel cover and the machine cover are fixed on the wheel stand;

The distance adjustment mechanism includes a frame, a lead screw, a bearing, a workbench and a hand wheel. There are two threaded sections with opposite directions processed on the lead screw, and a polished rod is between the two threaded sections; the two threaded sections of the lead screw are respectively installed Workbench, the workbench is threaded with the lead screw, the two ends of the lead screw are connected to the frame through bearings, one end of the lead screw passes through the frame and the handwheel is installed;

Overall installation relationship: the two workbenches of the distance adjustment mechanism are equipped with sharpening mechanisms, that is, the bottom end of the grinding wheel frame of the sharpening mechanism is installed on the workbench, and the positions of the grinding wheels in the two sharpening mechanisms are corresponding. The channel formed between the worktables in the sharpening mechanism communicates with the central hole of the three-jaw chuck.

The sharpening device also includes an auxiliary guiding mechanism. The auxiliary guiding mechanism includes a support seat, lighting equipment, a lower abutment, an independent drill bit and an upper abutment, wherein two I-shaped chutes are processed in parallel on the upper end surface of the support seat, and the clamping The mechanism also includes an auxiliary ejector column and an auxiliary three-jaw chuck. The end surface of the auxiliary ejector column is provided with a handle and the circumferential surface is also processed with a threaded section;

The lower end surface of the lower abutment is processed in parallel with two sliders, the upper abutment is installed on the upper end surface of the lower abutment, and the four sides of the upper abutment are respectively equipped with auxiliary pillars, lighting equipment, auxiliary three-jaw chuck and independent The center hole of the drill bit and the auxiliary three-jaw chuck is connected with the through hole of the upper abutment, the positions of the auxiliary top column and the auxiliary three-jaw chuck are corresponding and are located at the end of the through hole of the upper abutment through thread fit, and the upper abutment is integrally and The lower abutment is integrally installed on the support seat, and the slide block on the lower guide rail is slidably matched with the chute on the support seat.

The sharpening device also includes a universal wheel and a fixed support mechanism, the fixed support mechanism includes a fixed support pad, a latch, an inner rod and a shell, the inner rod is processed with a pin hole radially, and the shell is processed with an annular groove along the circumferential direction, The inner rod is installed in the shell, the pin passes through the annular groove on the shell and is installed in the pin hole of the inner rod, the bottom of the inner rod is installed on the fixed support pad and the two are matched through the external thread;

Universal wheels and a fixed support mechanism are installed on the bottom ends of the mounting seat in the power mechanism, the frame in the distance-adjusting mechanism and the support seat in the guide mechanism, that is, the fixed support mechanism is installed on the mounting seat and the frame through the shell.

The power mechanism includes a shaft support, the shaft support is vertically installed in the box, and the top of the shaft support is against the outer circle of the stepped shaft.

A hook-shaped groove is processed on the side of the end of the fan blade in the sharpening mechanism.

The grinding wheel in the sharpening mechanism is a diamond-coated grinding wheel.

Beneficial effect:

(1) The present invention is sharpening equipment for large-diameter (50mm-500mm) cylindrical corn milling cutters; for corn milling cutters of different diameters, the cutter can be completed by linearly moving the position of the worktable in the two sharpening mechanisms The overall knife sharpening process improves the precision of the knife itself and prolongs the service life of the knife; in addition, the grinding wheel cover and fan of the sharpening mechanism are made of magnetic materials, and the weak wind generated by the fan and its own magnetic force will dissipate the metal generated during the sharpening process. The dust is adsorbed on the special fan, which can greatly reduce the pollution of metal dust in the process of processing. The grinding wheel cover helps to prevent the metal powder generated in the process from splashing around and helps to improve the air quality of the workshop. , reducing the machining error caused by the metal dust attached to the grinding wheel.

(2) The present invention adopts an auxiliary guide mechanism, which corresponds to cylindrical milling cutters of different lengths and milling cutters of different clamping methods, which can be achieved by rotating the auxiliary guide mechanism, with the help of the auxiliary three-jaw chuck and the auxiliary ejector column on the auxiliary guide mechanism. To achieve good positioning of the cutter, the whole device can independently complete the sharpening process of corn milling cutters with different diameters, different lengths and different clamping methods only by adding an auxiliary guide mechanism, and the whole device can be adjusted in a wide range.

(3) Compared with the large-scale equipment on the market, the present invention can conveniently realize the reasonable movement of the position of the sharpening device, that is, the linear movement of the power mechanism, the sharpening mechanism and the auxiliary guide mechanism is realized by using the universal wheel and the fixed support mechanism, so that the whole The device is convenient to adjust the positions of the three; in addition, the fixed support mechanism can make the sharpening device realize two states of fixed and movable, which is convenient, reliable and easy to realize.

(4) Compared with the existing sharpening equipment in the market, the present invention improves the overall work efficiency and reduces the energy consumption of the motor. The equipment is equipped with a pair of double grinding wheels, and the surface of the grinding wheel is diamond-coated. During the whole sharpening process, the double grinding wheels participate in the work at the same time, which improves the speed of sharpening. The fine diamond particle coating has high hardness and low wear, which improves the durability of the equipment. Long service life, at the same time, it can grind the blade surface with high smoothness and high flatness.

(5) The present invention can independently complete the drilling process of simple shaft parts; the knife sharpening device can realize one-way clamping and two-way clamping, and the auxiliary guide mechanism is provided with independent replaceable center drilling equipment.

Description of drawings

Fig. 1 is an overall perspective view of the sharpening device of the present invention.

Fig. 2 is a perspective view of the power mechanism of the present invention.

Fig. 3 is an exploded view of the sharpening mechanism of the present invention.

Fig. 4 is a perspective view of the guiding mechanism of the present invention.

Fig. 5 is a perspective view of the ball screw pair of the present invention.

Fig. 6 is a schematic structural view of the fan in the sharpening mechanism of the present invention.

Fig. 7 is a perspective view of the fixed support mechanism of the present invention.

Among them, 1-power mechanism, 2-clamping mechanism, 3-sharpening mechanism, 4-auxiliary guiding mechanism, 5-distance adjustment mechanism, 6-universal wheel, 7-fixed support mechanism, 8-large AC motor, 9 -box, 10-shaft support, 11-main three-jaw chuck, 12-step shaft, 13-gear set, 14-fan plug, 15-fan, 16-grinding wheel, 17-grinding wheel cover, 18-small AC motor , 19-grinding wheel stand, 20-auxiliary top column, 21-lighting equipment, 22-lower abutment, 23-support seat, 24-auxiliary three-jaw chuck, 25-independent drill, 26-upper abutment, 27-hand Wheel, 28-leading screw, 29-bearing, 30-table, 31-fixed support pad, 32-inner rod, 33-bolt, 34-shell.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in Figure 1, a sharpening device suitable for large-diameter corn milling cutters, the sharpening device includes: a power mechanism 1, a clamping mechanism 2, a sharpening mechanism 3, an auxiliary guiding mechanism 4, and a distance adjustment mechanism 5 , universal wheel 6 and fixed support mechanism 7. The clamping mechanism 2 includes an auxiliary ejector column 20, a three-jaw chuck and an auxiliary three-jaw chuck 24, realizing single-end clamping and double-end clamping of different types of milling cutters. In the case of one-way clamping, sometimes in order to achieve two-way fixing, the present invention designs an auxiliary plug to withstand the other side. In order to avoid scratching the milling cutter to be ground, a cylinder-head plug is used instead of a pointed thimble, that is Auxiliary ejector 20, the auxiliary ejector 20 is connected with the base 26 through threads, and the end surface of the auxiliary ejector 20 is provided with a handle, which can be conveniently twisted to realize the fine adjustment of the extension length of the auxiliary ejector 20 , so as to achieve reliable clamping.

As shown in accompanying drawing 2, the power mechanism 1 adopts three-stage deceleration, and the deceleration ratios are 1/1, 2/1 and 4/1 respectively, and different sharpening speeds can be adjusted for knives of different sizes. The power mechanism 1 includes a mounting seat, a large AC motor 8, a box body 9, a shaft support 10, a main three-jaw chuck 11, a stepped shaft 12 and a gear set 13. The upper end surface of the mounting seat is processed with an I-shaped chute in parallel, and the box The lower end surface of the body 9 is parallel to the processing slider; the gear set 13 is installed horizontally on the inner side of the box body 9 through the stepped shaft 12, the shaft support 10 is vertically installed in the box body 9, and the top of the shaft support 10 is against the outer circle of the stepped shaft 12 And support it, the large AC motor 8 is installed on the outside of the box body 9, its output shaft is fixedly connected with the stepped shaft 12, the box body 9 is installed on the mounting seat, and the slide block on the box body 9 is connected with the mounting seat. The chute is slidingly matched, and the outside of the casing 9 is also equipped with a main three-jaw chuck 11. The position of the main three-jaw chuck 11 corresponds to the large AC motor 8 and is connected with the last step shaft.

As shown in accompanying drawing 3, sharpening mechanism 3 comprises fan plug 14, fan 15, grinding wheel 16, grinding wheel cover 17, small AC motor 18 and grinding wheel frame 19; Magnetic material; Small AC motor 18 is arranged in the machine cover, and the button switch on the small AC motor 18 passes through the machine cover, is used to control the opening and closing of the small AC motor 18, and the grinding wheel cover 17 is installed on the outer surface of the grinding wheel 16, and the fan 15 is arranged on the inboard of grinding wheel 16, and fan plug 14 is installed in the center of fan 15, and the output shaft of small AC motor 18 passes the top of grinding wheel frame 19, and passes through the center of fan plug 14 and both are fixedly connected, and grinding wheel cover 17 And machine cover is fixed on the grinding wheel frame 19.

As shown in FIG. 4 , the auxiliary guiding mechanism 4 includes an illuminating device 21 , a lower base 22 , a support base 23 , an independent drill 25 and an upper base 26 . The four sides of the upper abutment 26 are respectively equipped with an auxiliary top column 20, lighting equipment 21, an auxiliary three-jaw chuck 24 and an independent drill bit 25; The abutment 22 slides in the horizontal direction; the independent drill bit 25 is a spare drill bit, so that the sharpening device has a wider application range, and can complete the drilling process with a diameter of φ2-φ25 and a depth of 0-100mm.

As shown in accompanying drawing 5, pitch-adjusting mechanism 5 comprises hand wheel 27, leading screw 28, bearing 29 and workbench 30, is processed with two sections of screw thread sections opposite in direction on screw screw 28, is polished rod between two screw thread sections; Workbench 30 is installed respectively on the two thread sections of bar 28, and the two ends of leading screw 28 are connected with frame by bearing 29, and one end of leading screw 28 passes frame and handwheel 27 is installed. The theoretical working length of the screw mandrel 28 is 0-940mm, and the linear movement of the two workbenches 30 is realized by rotating the hand wheel 27, and the adjustable distance of the two workbenches 30 is 60-500mm.

As shown in accompanying drawing 6, fan 14 of the present invention can also be used as the collection structure of metal dust, and the side surface of fan 15 fan blade end is processed with hook groove, is about to install the fan 15 with hook groove on the grinding wheel 16, do not introduce power source in addition, utilize the rotational power of emery wheel 16 in the sharpening mechanism 3, drive fan 15 to rotate. The weak wind force and magnetic force produced by the fan 15 absorb the metal powder chips produced in the sharpening process on the fan blades, and due to the centrifugal effect of the rotation process, the metal powder chips naturally slide down into the hook groove. The dust is well collected in the hook-shaped groove at the end of the fan blade, which greatly reduces the dust pollution during the sharpening process.

As shown in accompanying drawing 7, fixed support mechanism 7 comprises fixed support pad 31, inner rod 32, bolt 33 and shell 34, and inner rod 32 is machined with pin hole along radial direction, and shell 34 is machined with annular groove along circumferential direction, and inside The rod 32 is installed in the shell 34, the latch 33 is installed in the pin hole of the inner rod 32 and passes through the annular groove on the outer shell 34, the inner rod 32 is installed on the support pad 31 through the external thread connection, and by rotating the latch 33, the direct connection is driven. The inner rod 32 of the fixed support pad 31 rotates, and the inner rod 32 moves up and down through screw fit. The universal wheels 6 and the fixed support mechanism 7 are a pair of complementary structures, the inner rod 32 moves down, and the four universal wheels 6 are in contact with the ground to realize the moving state; In the moving state, the height adjustable range of the present invention is 0-100mm.

Working principle: adjust the fixed support mechanism 7 to make the universal wheel 6 realize the movable state, thereby adjusting the positions of the power mechanism 1, the sharpening mechanism 3 and the auxiliary guide mechanism 4; adopt the auxiliary three-jaw chuck 24 and the auxiliary top column 20 to The radial tool is positioned, through the cooperation of the slider and the I-shaped chute, the distance between the three-jaw chuck and the auxiliary three-jaw chuck 24 is adjusted, and the positions of the two workbenches 30 are adjusted by shaking the hand wheel 5 until Grinding wheel 16 lightly touches the corn milling cutter required sharpening to realize radial positioning. When the position is appropriate, adjust the fixed supporting mechanism 7 overhead universal wheel 6 to realize the immovable fixed state of the sharpening device; start the large AC motor 8 to drive three The claw chuck rotates, thereby drives the corn milling cutter that is installed on the three-jaw chuck to rotate, and starts the small AC motor 18 on the sharpening mechanism 3 to start sharpening the corn milling cutter.

The overall installation relationship: the sharpening mechanism 3 is installed on the two workbenches 30 of the distance adjustment mechanism 5, that is, the bottom end of the grinding wheel frame 19 of the sharpening mechanism 3 is installed on the workbench 30, and the grinding wheel in the two sharpening mechanisms 3 The position of 16 is relative, and the universal wheel (6) and fixed support mechanism (7) are installed at the frame bottom of sharpening device, and promptly fixed support mechanism (7) is installed on the frame by shell (34), two sharpening The channel formed between the worktables 30 in the mechanism 3 communicates with the central hole of the three-jaw chuck.

The two-way adjustable characteristics of the clamping mechanism 2 and the distance adjusting mechanism 5 in the present invention enable the sharpening device to complete different lengths (one-way clamping 0-800mm, two-way clamping 0-480mm) and different diameters (φ50-500mm) The sharpening process of the cylindrical milling cutter.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. A sharpening device suitable for large-diameter corn milling cutters, characterized in that the sharpening device comprises a power mechanism (1), a clamping mechanism (2), a sharpening mechanism (3) and a distance adjustment mechanism (5 ), the clamping mechanism (2) adopts a three-jaw chuck; The power mechanism (1) includes a mounting seat, a large AC motor (8), a box body (9), a gear set (13) and a stepped shaft (12). The lower end surface of the body (9) is processed with a slider; the gear set (13) is horizontally installed on the inner side of the box body (9) through the stepped shaft (12), that is, the gear set (13) is sleeved on the stepped shaft (12), and the step The two ends of the shaft (12) are installed on the box body (9), the large AC motor (8) is installed on the outside of the box body (9), its output shaft is fixedly connected with the stepped shaft (12), and the box body (9) is installed On the mounting seat, and the slide block on the casing (9) is slidingly matched with the chute on the mounting seat, the outside of the casing (9) is also equipped with a main three-jaw chuck (11), and the main three-jaw chuck (11 ) position corresponds to the large AC motor (8), and is connected with the last step shaft; Described sharpening mechanism (3) comprises fan plug (14), fan (15), emery wheel (16), emery wheel cover (17), small AC motor (18), machine cover and emery wheel frame (19), emery wheel cover ( 17) and fan (15) all adopt magnetic material; Small AC motor (18) is arranged in the machine cover, and emery wheel cover (17) is installed on the outer surface of emery wheel (16), and fan (15) is arranged on the surface of emery wheel (16). Inside, the fan plug (14) is installed in the center of the fan (15), the output shaft of the small AC motor (18) passes through the top of the grinding wheel frame (19), and passes through the center of the fan plug (14) and the two are fixedly connected , the grinding wheel cover (17) and the machine cover are fixed on the grinding wheel frame (19); Distance adjusting mechanism (5) comprises frame, leading screw (28), bearing (29), workbench (30) and hand wheel (27), and the screw thread section that two sections of directions are opposite is processed on the leading screw (28), two sections Be a polished rod between the section thread sections; Workbench (30) is respectively installed on the two section thread sections of leading screw (28), and workbench (30) and leading screw (28) are thread fit, and the two ends of leading screw (28) Connect with the frame by the bearing, and one end of the leading screw (28) passes through the frame and installs the hand wheel (27); Overall installation relationship: sharpening mechanism (3) is installed on the two workbenches (30) of distance-adjusting mechanism (5), namely the bottom of the grinding wheel frame (19) of sharpening mechanism (3) is installed on workbench ( 30), the positions of the grinding wheels (16) in the two sharpening mechanisms (3) are corresponding, and the passage formed between the worktables (30) in the two sharpening mechanisms (3) communicates with the central hole of the three-jaw chuck . 2. A kind of sharpening device suitable for large-diameter corn milling cutters as claimed in claim 1, characterized in that, the sharpening device also includes an auxiliary guide mechanism (4), and the auxiliary guide mechanism (4) includes a support seat , lighting equipment (21), lower abutment (22), support base (23), independent drill bit (25) and upper abutment (26), wherein the upper end surface of the support base (23) is processed in parallel with two I-shaped slides groove; the clamping mechanism (2) also includes an auxiliary push post (20) and an auxiliary three-jaw chuck (24), and the end face of the auxiliary push post (20) is provided with a handle and the circumferential surface is also processed with a threaded section; The lower end surface of the lower abutment (22) is processed in parallel with two slide blocks, the upper abutment (26) is installed on the upper end surface of the lower abutment (22), and the four sides of the upper abutment (26) are respectively equipped with auxiliary tops. Column (20), lighting equipment (21), auxiliary three-jaw chuck (24) and independent drill bit (25), the central hole of auxiliary three-jaw chuck (24) is connected with the through hole of upper abutment (26), auxiliary The top column (20) corresponds to the position of the auxiliary three-jaw chuck (24) and is located at the end of the through hole of the upper abutment (26) through thread fit, and the upper abutment (26) is integrally installed with the lower abutment (22) On the support base (23), and the slide block on the lower guide rail (26) is slidingly matched with the chute on the support base (23). 3. A kind of sharpening device suitable for large-diameter corn milling cutters as claimed in claim 1 or 2, characterized in that, said sharpening device also includes universal wheels (6) and fixed support mechanisms (7), The fixed support mechanism (7) includes a fixed support pad (31), a latch (32), an inner rod (33) and a shell (34), the inner rod (33) is processed with pin holes radially, and the outer shell (34) To be processed with annular groove, inner rod (33) is installed in the shell (34), latch (32) passes the annular groove on the outer shell (34) and is installed in the pin hole of inner rod (33), inner rod (33) ) the bottom end is installed on the fixed support pad (31) and the two are matched by external threads; Universal wheels (6) and fixed support mechanism (7) are installed at the bottom end of the frame of sharpening device, that is, fixed support mechanism (7) is installed on the frame by shell (34). 4. A kind of sharpening device suitable for large-diameter corn milling cutters as claimed in claim 1, characterized in that, the power mechanism (1) includes a shaft support (10), and the shaft support (10) is vertically installed on In the box body (9), the top end of the shaft support (10) is against the outer circle of the stepped shaft (12). 5. A kind of sharpening device suitable for large-diameter corn milling cutters as claimed in claim 1, characterized in that, the side surface of the fan (15) blade end in the sharpening mechanism (3) is processed with a hook type groove. 6. A sharpening device suitable for large-diameter corn milling cutters according to claim 1, wherein the grinding wheel (16) in the sharpening mechanism (3) is a diamond-coated grinding wheel.