CN218947119U

CN218947119U - Blade grinding device

Info

Publication number: CN218947119U
Application number: CN202223612457.7U
Authority: CN
Inventors: 李凌; 忻红波; 李辉斌; 毛建峰; 郭潇潇
Original assignee: Zhenhai Petrochemical Construction And Installation Engineering Co ltd
Current assignee: Zhenhai Petrochemical Construction And Installation Engineering Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-02
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to a blade sharpening device, which comprises a base, a grinding wheel, a tool apron and a first driving mechanism for driving the tool apron to transversely move, wherein a tool bar extending towards the grinding wheel is clamped on the tool apron, and a concave area for placing a blade to be sharpened is designed on the peripheral surface of the extending end of the tool bar; the device also comprises a second driving mechanism capable of driving the tool apron to rotate up and down and a third driving mechanism for driving the tool apron to rotate horizontally, wherein the second driving mechanism is arranged in a cover body which is placed on the movable seat, and the tool apron is connected with the output end of the second driving mechanism; the third driving mechanism comprises a driving bevel gear and a driven bevel gear which are meshed with each other, the driving bevel gear is supported on the cover body through a horizontal shaft, the driven bevel gear is fixed with the turntable through a vertical shaft, the turntable is placed on the movable seat, the movable seat can transversely move on the base, and a first driving mechanism is arranged between the movable seat and the base. The blade sharpening device can realize blade sharpening through one-time clamping and multiple-time adjustment.

Description

Blade grinding device

Technical Field

The utility model relates to a polishing device, in particular to a blade polishing device for polishing a small blade.

Background

Inserts are tools commonly used in machining. In order to ensure the machining precision, the geometric precision of the blade is required to be high. And during machining, the blade is inevitably worn. When the wear reaches a certain degree, the wear cannot be used continuously without polishing, and the wear is in a scrapped state. Thus, the blade has a low utilization rate, resulting in an increase in production cost. For this reason, a blade sharpening device has been designed, for example, in the document of chinese patent grant publication No. CN208854300U, such a blade sharpening device is disclosed, which comprises a longitudinal movement mechanism, a base, a lateral movement mechanism and a deflection mechanism, the longitudinal movement mechanism comprises a first support frame, a first bearing seat, a first fixing seat, a first screw rod and a first rotating disc; the transverse moving mechanism comprises a second supporting frame, a second bearing, a second fixing seat, a second screw rod and a second rotating disc; the deflection mechanism comprises a cutter pressing body, a ball screw and a lock nut, wherein a semicircular arc groove matched with the ball part of the ball screw is formed in the bottom of the cutter pressing body, the lock nut is sleeved on the shaft part between the ball screw and the second fixing seat, the internal thread on the lock nut is in threaded connection with the external thread on the bottom of the cutter pressing body, the ball part of the ball screw is sleeved in the semicircular arc groove of the bottom of the cutter pressing body, and the lock nut is screwed, so that the ball part of the ball screw is in a sliding fit state or a locking state in the semicircular arc groove of the bottom of the cutter pressing body. By adopting the device, one-time clamping can be realized, and then the blade can be polished through multiple adjustments of the longitudinal moving mechanism, the transverse moving mechanism and the deflection mechanism, so that the polishing quality is improved, the utilization rate of the blade is improved, and the production cost is reduced.

Disclosure of Invention

Aiming at the current state of the art, the utility model provides the blade sharpening device which can realize blade sharpening by once clamping and multiple adjustment.

The technical scheme adopted for solving the technical problems is as follows: the blade sharpening device comprises a base, a grinding wheel, a blade holder for bearing a blade to be sharpened and a first driving mechanism for driving the blade holder to transversely move, and is characterized in that a cutter bar extending towards the grinding wheel is clamped on the blade holder, and a concave area for placing the blade to be sharpened is designed on the peripheral surface of the extending end of the cutter bar; the device also comprises a second driving mechanism capable of driving the tool apron and the tool bar to rotate up and down and a third driving mechanism for driving the tool apron and the tool bar to rotate horizontally, wherein the second driving mechanism is arranged in a cover body which is placed on the movable seat, and the tool apron is connected with the output end of the second driving mechanism; the third driving mechanism comprises a driving bevel gear and a driven bevel gear which are meshed with each other, wherein the driving bevel gear is supported on the cover body through a horizontal shaft, the driven bevel gear is fixed with a rotary disc through a vertical shaft, the rotary disc is arranged on the movable seat, the movable seat can transversely move on the base, and the first driving mechanism is arranged between the movable seat and the base.

More preferably, the first driving mechanism comprises a gear installed in the movable seat through a gear shaft and a rack which is positioned on the base and meshed with the gear, and a hand wheel positioned outside the movable seat is installed on the gear shaft. The driving mode has simple structure and low cost.

Also, it is further preferable that the second driving mechanism may include a rotating shaft rotatably supported on the housing and an operating wheel mounted at one end of the rotating shaft and located outside the housing, and the tool holder is mounted at the other end of the rotating shaft.

In order to conveniently position the rotating shaft at a required position, the top of the cover body is also provided with a screw hole, and a limit bolt which can prop against the rotating shaft is connected in the screw hole in a threaded manner.

In order to intuitively obtain the rotating angle of the rotating shaft, the other end of the rotating shaft is also sleeved with a dial plate positioned outside the cover body, and the cover body is provided with an indication line corresponding to the dial plate.

In consideration of the convenience of connection, the tool apron is provided with a conical magnetic suction head, the other end of the rotating shaft is provided with a conical hole for the conical magnetic suction head to be inserted, and the magnetic suction head is magnetically attracted in the conical hole.

In the above schemes, it is further improved that the rotary disc is fixed with a ring-shaped retainer ring extending downwards, the movable seat is provided with a base, the top surface of the base is provided with a ring-shaped groove for the ring-shaped retainer ring to sit, and balls distributed along the circumferential direction at intervals are arranged between the ring-shaped retainer ring and the ring-shaped groove.

For clamping convenience, the clamping end of cutter arbor is designed into the structure that the section is the polygon, the recess on the extension end of cutter arbor has a plurality ofly, along circumference interval distribution respectively, and is equipped with the mounting hole that is used for fixed blade in each recess to can grind a plurality of blades simultaneously.

For clamping more stably, clamping grooves which are mutually communicated and can be used for inserting the clamping ends of the cutter bars are formed in the adjacent side faces of the cutter holders, and a plurality of locking bolts which can be propped against the surfaces of the clamping ends of the cutter bars are connected to the top faces of the cutter holders in a threaded manner.

In each scheme, two guide grooves which are distributed at intervals and extend along the transverse moving direction of the tool apron are formed in the upper surface of the base, and guide pieces which can be inserted into the corresponding guide grooves are arranged at the bottom of the movable seat so as to ensure the moving stability and smoothness of the movable seat.

Compared with the prior art, the utility model has the advantages that the second and third driving mechanisms are additionally arranged, so that the angles of the blades during grinding can be conveniently changed by utilizing the second and third driving mechanisms, and the purposes of once clamping and multiple grinding are realized. Meanwhile, the precise positioning of the blades and the synchronous grinding of multiple blades can be realized through the cooperation of the cutter bar and the cutter holder, so that the grinding efficiency is high and the accuracy is good.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of another angle of an embodiment of the present utility model;

FIG. 3 is a perspective view of FIG. 1 with the cover removed;

FIG. 4 is a schematic perspective view of FIG. 3 in another angular state;

FIG. 5 is a schematic cross-sectional view of an embodiment of the present utility model;

FIG. 6 is a schematic perspective view of a further embodiment of the present utility model;

fig. 7 is a schematic view of the projection of fig. 6.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present utility model, it should be understood that the terms "long", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "wide", "high", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different directions, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

As shown in fig. 1 to 5, the blade sharpening device comprises a base 1, a grinding wheel 2, a blade holder 3, a first driving mechanism 4 for driving the blade holder to move transversely (according to the arrow direction in fig. 1), a second driving mechanism 5 capable of driving the blade holder to rotate up and down, and a third driving mechanism 6 for driving the blade holder to rotate horizontally, wherein the base 1 is designed into a flat plate structure. The grinding wheel 2 is mounted on the base 1 through a wheel mount 21, and the grinding wheel 2 is driven to rotate by a power source (motor), which is not shown in the drawings because it is the prior art. In this embodiment, in order to realize accurate positioning, a cutter bar 7 extending toward the grinding wheel 2 is clamped on the cutter bar 3, and a concave area 71 for placing the blade to be sharpened is designed on the peripheral surface of the extending end of the cutter bar 7, wherein two concave areas 71 are symmetrically distributed on the peripheral surface of the extending end of the cutter bar 7, and each concave area is provided with a mounting hole for fixing the blade 100, and the clamping end of the cutter bar 7 is designed into a polygonal structure with a quadrangular cross section. Correspondingly, the adjacent side surfaces of the tool apron 3 are provided with clamping grooves 31 which are mutually communicated and can be used for inserting the clamping ends of the tool bars, and a plurality of locking bolts a1 which can be propped against the clamping end surfaces of the tool bars 7 are connected to the top surface of the tool apron 3 in a threaded manner. Therefore, during clamping, the square flattening structure of the clamping end can be used for being attached to the clamping groove 31, so that the angle can be adjusted in multiple directions, and simultaneous grinding of multiple blades is realized.

In order to facilitate the movement of the tool holder 3, in this embodiment, the first driving mechanism 4 is disposed between a movable seat 8 and the base 1, the movable seat 8 can move laterally on the base 1, preferably, the first driving mechanism 4 adopts a structure of a gear 41 and a rack 42, that is, the first driving mechanism 4 includes the gear 41 installed in the movable seat 8 through a gear shaft 43 and the rack 42 meshed with the gear 41 and located on the base 1, the rack 42 extends along the lateral movement direction of the tool holder 3, and meanwhile, a hand wheel 44 located outside the movable seat 8 is installed on the gear shaft 43 to drive the hand wheel 44, so that the gear 41 can be easily forced to rotate along the rack 42 to move forward, and then the movable seat 8 is driven to move laterally. In order to ensure the advancing direction of the movable seat 8, two guide grooves 11 which are distributed at intervals and extend along the transverse moving direction of the tool apron are formed in the upper surface of the base 1, and a guide piece 81 which can be inserted into the corresponding guide groove is arranged at the bottom of the movable seat 8, and is preferably a guide wheel, so that the straightness of the movement of the movable seat 8 is ensured, the resistance in the movement process can be reduced, and the movable seat 8 can be moved more smoothly.

The second driving mechanism 5 includes a rotating shaft 51 rotatably supported on a housing 9, and an operating wheel 52 mounted at one end of the rotating shaft 51 and located outside the housing 9, wherein the housing 9 is placed on the movable seat 8 and can rotate relative to the movable seat 8. The tool holder 3 is mounted at the other end of the spindle 51. Thus, the operation wheel 52 is rotated to drive the tool holder 3 to rotate up and down around the rotation shaft, and further drive the tool bar 7 and the blade 100 to rotate up and down. In order to keep the rotating shaft 51 at a desired position after the rotating shaft is rotated in place, a screw hole is further formed in the top of the cover 9, and a limit bolt a2 capable of abutting against the rotating shaft 51 is screwed into the screw hole. Meanwhile, in order to intuitively know the rotation angle, the other end of the rotating shaft 51 is also sleeved with a dial 53 positioned outside the cover body, and the cover body 9 is provided with an indication line corresponding to the dial. And in consideration of the convenience of connection with the tool holder 3, the tool holder 3 is provided with a conical magnetic tip 32, and the other end of the rotating shaft 51 is provided with a conical hole into which the conical magnetic tip is inserted, so that the magnetic tip 32 is magnetically attracted in the conical hole. Therefore, the conical hole and the conical head are matched to ensure that the conical hole and the conical head are coaxial, and the conical hole and the conical head are connected by magnetic adsorption, so that the connection of the conical hole and the conical head is faster and firmer.

The third driving mechanism 6 preferably has a structure including a driving bevel gear 61 and a driven bevel gear 62 which are engaged with each other, wherein the driving bevel gear 61 is supported on the housing 9 through a horizontal shaft 63, an angle control handle 64 is mounted on the horizontal shaft exposed outside the housing 9, the driven bevel gear 62 is fixed to a rotating disc 66 through a vertical shaft 65, and the rotating disc is placed on the movable base 8. In order to ensure that the turntable 66 is reliably supported on the movable seat 9, the turntable 66 is fixedly provided with a downward extending annular retainer ring 67, the movable seat 9 is provided with a base 10, the top surface of the base is provided with a circle of annular groove 10a for the annular retainer ring 67 to sit, and specifically, the base 10 is formed by splicing an annular seat body 101 and an inner ring 102 which is positioned in the seat body, and the annular groove 10a is formed at the splicing position of the annular seat body and the inner ring 102 so as to facilitate assembly. Balls 68 are provided between the annular retainer 67 and the annular groove 10a at intervals in the circumferential direction, so that smooth rotation between the two balls is ensured.

When the knife blade is used, the knife blade to be sharpened is placed in the concave area of the knife bar, the right angles at two sides of the knife blade are used as references, and bolts penetrate through the central holes on the knife blade and then are connected in the mounting holes of the concave area, so that the knife blade to be sharpened is fastened. And then the clamping end of the cutter bar is inserted into the clamping groove of the cutter holder, and the locking bolt is screwed. Then the conical magnetic suction head of the tool apron is inserted into the conical hole of the rotating shaft, so that the magnetic suction head is firmly adsorbed on the rotating shaft. Then, the handle is rotated to enable the gear to move forwards along the rack in a meshing way, and the movable seat, the cover body, the second driving mechanism, the third driving mechanism and the like on the movable seat are driven to move transversely until the cutter holder, the cutter bar and the cutter blade on the cutter holder are close to the grinding wheel transversely and reach a proper position. Then the angle control handle is rotated to drive the driving bevel gear to rotate along the driven bevel gear to drive the cover body to rotate relative to the base and the movable seat below, so that the cutter holder, the cutter bar and the cutter blade rotate horizontally to a required position. According to the thickness and the material difference of the parts processed by the blade, the operating wheel can be rotated to drive the rotating shaft inside to rotate, and after the adjustment is completed, the limit bolt can be screwed. The grinding wheel may then be activated to begin grinding.

If necessary, a projector 01 may be added below the base, and a projection opening of the projector 01 is located below the cutter bar 7, and referring to fig. 6 and 7, a 45 ° reflecting plate 02 and a projection screen 03 corresponding to the reflecting plate 02 may be disposed above the cutter bar 7. At ordinary times, the projection port upper cover is provided with a protective cover 04. Before starting the grinding, the protective cover 04 can be opened, the blade shape exposed to the cutter bar can be projected onto the projection screen, and recording can be performed. After finishing the grinding, the same method can be used for projecting again, and the size change of the blade before and after grinding is compared. Thus, when the finished blade is ground and cutting is installed again, a reference can be provided for the installation position, and the change of the size of the ground blade is ensured not to affect the subsequent cutting precision.

Claims

1. The blade sharpening device comprises a base (1), a grinding wheel (2), a blade holder (3) for bearing a blade to be sharpened and a first driving mechanism (4) for driving the blade holder to transversely move, and is characterized in that a cutter bar (7) extending towards the grinding wheel is clamped on the blade holder, and a concave area (71) for placing a blade to be sharpened is designed on the peripheral surface of the extending end of the cutter bar; the device also comprises a second driving mechanism (5) capable of driving the tool apron and the tool bar to rotate up and down and a third driving mechanism (6) for driving the tool apron and the tool bar to rotate horizontally, wherein the second driving mechanism is arranged in a cover body which is placed on the movable seat (8), and the tool apron (3) is connected with the output end of the second driving mechanism; the third driving mechanism comprises a driving bevel gear (61) and a driven bevel gear (62) which are meshed with each other, wherein the driving bevel gear is supported on the cover body (9) through a horizontal shaft (63), the driven bevel gear is fixed with a rotary table (66) through a vertical shaft (65), the rotary table (66) is placed on a movable seat (8), the movable seat can transversely move on the base (1), and the first driving mechanism (4) is arranged between the movable seat and the base.

2. The blade sharpening device of claim 1, wherein: the first driving mechanism (4) comprises a gear (41) arranged in the movable seat through a gear shaft (43) and a rack (42) which is arranged on the base and meshed with the gear, and a hand wheel (44) arranged outside the movable seat is arranged on the gear shaft (43).

3. The blade sharpening device of claim 1, wherein: the second driving mechanism (5) comprises a rotating shaft (51) rotatably supported on the cover body and an operating wheel (52) arranged at one end of the rotating shaft and positioned outside the cover body, and the tool apron (3) is arranged at the other end of the rotating shaft (51).

4. A blade sharpening device according to claim 3, wherein: the top of the cover body (9) is also provided with a screw hole, and a limit bolt (a 2) which can prop against the rotating shaft is connected in the screw hole in a threaded manner.

5. A blade sharpening device according to claim 3, wherein: the other end of the rotating shaft (51) is also sleeved with a dial (53) positioned outside the cover body, and the cover body (9) is provided with an indication line corresponding to the dial (53).

6. A blade sharpening device according to claim 3, wherein: the tool apron (3) is provided with a conical magnetic suction head (32), the other end of the rotating shaft (51) is provided with a conical hole for the conical magnetic suction head to be inserted into, and the magnetic suction head is magnetically attracted in the conical hole.

7. The blade sharpening device of claim 1, wherein: the rotary table (66) is fixedly provided with a downward extending annular retainer ring (67), the movable seat (8) is provided with a base (10), the top surface of the base is provided with a circle of annular grooves (10 a) for the annular retainer ring to sit, and balls (68) distributed along the circumferential direction at intervals are arranged between the annular retainer ring and the annular grooves.

8. The blade sharpening device of claim 1, wherein: the clamping end of the cutter bar (7) is designed to be of a polygonal cross section, a plurality of concave areas (71) are arranged on the extending end of the cutter bar and are distributed at intervals along the circumferential direction, and mounting holes for fixing the blades are formed in the concave areas.

9. The blade sharpening device of claim 8, wherein: the adjacent side surfaces of the tool apron (3) are provided with clamping grooves (31) which are mutually communicated and can be used for inserting the clamping ends of the tool bars, and the top surface of the tool apron is in threaded connection with a plurality of locking bolts (a 1) which can be propped against the clamping end surfaces of the tool bars.

10. The blade sharpening device of any one of claims 1 to 9, wherein: two guide grooves (11) which are distributed at intervals and extend along the transverse moving direction of the tool apron are formed in the upper surface of the base, and a guide piece (81) which can be inserted into the corresponding guide groove is arranged at the bottom of the movable seat.