Surface grinding machine

Abstract

The utility model discloses a surface grinding machine which comprises a base, a movable workbench is installed above the base, a hollow stand column is arranged on the side portion of the base, a lifting mechanism is arranged in the stand column, the lifting mechanism is connected with a connecting shaft, the connecting shaft is located above the workbench, and the connecting shaft is rotationally connected with a grinding wheel. The device further comprises a limiting mechanism, the limiting mechanism comprises an L-shaped connecting arm, a clamping ring is integrally formed at the end of one side wall of the connecting arm, the connecting shaft is sleeved with the clamping ring, the other side wall of the connecting arm is fixedly connected with an L-shaped limiting plate through a connecting piece, the connecting arm and the limiting plate form a groove, a guide column is fixedly connected to the side of the stand column, and the guide column is fixedly connected with the limiting plate. The guide column is embedded in a groove formed by the connecting arm and the limiting plate, and the two side faces of the guide column make contact with the two side walls of the limiting plate respectively. Acting force is generated on the limiting plate through the guide column, the grinding wheel is limited, and the situation that the grinding wheel shakes when grinding a workpiece, and grinding of the workpiece is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece polishing technical field especially relates to a surface grinder. BACKGROUND

[0002] In the process of workpiece production and processing, it needs to be polished so that it can reach the required flatness, prevent it from being installed in the machine, affect the operation of the machine, when polishing, the workpiece is placed on the magnetic plate of the surface grinder workbench, the magnetic plate generates magnetism after being electrified and attracts the workpiece, so that the workpiece is fixed on the workbench, the lifting mechanism drives the grinding wheel to contact with the workpiece, the grinding wheel rotates to polish the workpiece, at the same time, the workbench drives the workpiece to move longitudinally and transversely on the horizontal plane, and different parts of the workpiece are polished, but when the grinding wheel polishes the workpiece, the acting force between the two sides will make the friction wheel swing in the vertical direction, thereby affecting the polishing of the workpiece, reducing the precision of the workpiece and causing waste of materials. UTILITY MODEL CONTENTS

[0003] The utility model discloses a surface grinder, which has the advantages of being able to polish the workpiece more stably.

[0004] The above technical purpose of the utility model is achieved by the following technical scheme:

[0005] A surface grinder comprises a base, a movable workbench installed above the base, a hollow stand column arranged at the rear of the base, a lifting mechanism arranged in the stand column, a sliding groove formed in the side of the stand column facing the front of the workbench, a horizontal connecting shaft connected with the lifting mechanism, the connecting shaft passing through the sliding groove and being located above the workbench, a grinding wheel rotatably connected with the connecting shaft, a limiting mechanism, the limiting mechanism comprising an L-shaped connecting arm, a clasp integrally formed at the end of one side wall of the connecting arm, the clasp being sleeved on the connecting shaft, the plane where the side wall connected with the clasp of the connecting arm being parallel to the front side of the stand column, the plane where the other side wall of the connecting arm being parallel to the side of the stand column, an L-shaped limiting plate fixedly connected with the other side wall of the connecting arm through a connecting piece, the connecting arm and the limiting plate forming a groove, a guide column fixedly connected with the side of the stand column, the guide column being embedded in the groove formed by the connecting arm and the limiting plate, and the two side surfaces of the guide column being in contact with the two side walls of the limiting plate respectively.

[0006] The workpiece is fixed on the workbench, the grinding wheel is lowered by the lifting mechanism, the grinding wheel is in contact with the workpiece, the grinding wheel rotates to polish the workpiece, and the action force between the grinding wheel and the workpiece causes the grinding wheel and the connecting shaft to swing vertically, the connecting shaft drives the connecting arm and the limiting plate to move together, the side wall of the limiting plate is in contact with the guide column, when the limiting plate swings vertically, the limiting plate is blocked by the guide column, thereby avoiding the vertical swing of the limiting plate, the connecting shaft and the grinding wheel during polishing of the workpiece, reducing the precision of the polished workpiece and causing waste of materials.

[0007] As preferred, the connecting piece is a bolt, and the limiting plate is provided with two horizontal waist-shaped grooves on the side wall connected with the connecting arm, the two waist-shaped grooves are arranged in an up-down manner, two bolts are respectively inserted into each waist-shaped groove, the bolts pass through the side wall of the connecting arm, and nuts are sleeved on the bolts.

[0008] The above technical scheme is adopted, the connecting arm and the limiting plate are clamped by screwing the bolts and the nuts, so that the connecting arm and the connecting plate are fixed.

[0009] As preferred, the connecting shaft is fixedly connected with a protective cover, the side of the protective cover is fixed with the connecting shaft, the bottom and one side of the protective cover are provided with openings, the grinding wheel is located in the protective cover, the side of the protective cover is hingedly connected with a vertical baffle and a threaded sleeve on both sides of the opening, the side wall of the threaded sleeve is provided with a horizontal threaded hole, the threaded sleeve is connected with a bolt through the threaded hole, the side wall of the baffle is fixedly connected with a limiting groove, and the shank of the bolt is embedded in the limiting groove.

[0010] The above technical scheme is adopted, the baffle is rotated to cover the opening of the side of the protective cover, the bolt is rotated in the vertical direction so that the shank of the bolt is embedded in the limiting groove of the baffle, then the bolt is screwed in the horizontal direction so that the tail of the bolt is pressed against the baffle and the limiting groove, thereby the side of the protective cover is closed, the protective cover and the baffle are used to block the sparks generated by the grinding wheel during polishing of the workpiece, the baffle is rotated, the bolt is screwed in the reverse direction in the horizontal direction so that the tail of the bolt is away from the baffle, then the bolt is rotated in the horizontal direction so that the bolt is separated from the limiting groove, the baffle is rotated again to open the opening of the side of the protective cover, and the grinding wheel is convenient to overhaul.

[0011] As preferred, the workbench is fixedly connected with a blocking edge at the periphery.

[0012] The above technical scheme is adopted, the blocking edge blocks the debris generated during polishing of the workpiece, prevents the debris from flying around, and affects the working environment.

[0013] Preferably, the protective cover side wall is integrally formed with a connecting block outside, the connecting block is provided with a vertical through hole, and the side wall of the connecting block is threadedly connected with a horizontal bolt three.

[0014] According to the technical scheme, the water pipe of the cooling liquid is inserted into the through hole of the connecting block, the bolt three is screwed, the water pipe is tightly pressed, the water pipe is fixed with the connecting block, the workpiece and the grinding wheel are sprayed with the cooling liquid through the water pipe, and the temperature generated by the workpiece and the grinding wheel during polishing is reduced.

[0015] Preferably, the two side walls of the connecting arm are fixedly connected with a reinforcing sheet.

[0016] According to the technical scheme, the stress effect of the connecting arm is increased. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a whole schematic view of the embodiment;

[0018] Fig. 2 It is a top view of the embodiment;

[0019] Fig. 3 It is a side schematic view of the embodiment;

[0020] Fig. 4 It is a connection schematic view of the stand and the connecting shaft;

[0021] Fig. 5 It is a connection schematic view of the connecting arm and the limiting plate;

[0022] Fig. 6 It is an enlarged schematic view of A.

[0023] The drawings show that: 1, base; 2, workbench; 3, stand; 4, connecting shaft; 5, grinding wheel; 6, connecting arm; 7, collar; 8, limiting plate; 9, guide column; 10, bolt one; 11, nut; 12, waist-shaped groove; 13, protective cover; 14, baffle; 15, threaded sleeve; 16, bolt two; 17, limiting groove; 18, blocking edge; 19, connecting block; 20, bolt three; 21, reinforcing sheet. DETAILED DESCRIPTION

[0024] The following description is only a preferred embodiment of the utility model, the protection scope is not only limited to the embodiment, and belongs to the technical scheme under the idea of the utility model, the protection scope of the utility model should be limited. At the same time, it should be pointed out that for ordinary skilled person in the art, a number of improvements and refinements without departing from the principle of the utility model should be considered as the protection scope of the utility model.

[0025] See Figs. 1 to 6The utility model provides a kind of surface grinder, including base 1, movable workbench 2 is provided above base 1, magnetic plate is installed on workbench 2, workbench 2 perimeter edge is fixedly connected with baffle 18, hollow column 3 is provided in the rear of base 1, lifting mechanism is provided in the inside of column 3, vertical sliding slot is opened in the side of column 3 towards workbench 2, horizontal connecting shaft 4 is connected to lifting mechanism, connecting shaft 4 passes through the sliding slot of column 3, protective cover 13 is fixedly connected to the end of connecting shaft 4 away from column 3, opening is opened in the bottom side of protective cover 13 and the side towards the front of workbench 2, vertical baffle 14 and threaded sleeve 15 are hinged respectively on the two side edges of the front opening of protective cover 13, horizontal screw hole is opened in the side wall of threaded sleeve 15, threaded sleeve 15 is connected with bolt two 16 by screw hole, limit slot 17 is welded on the side wall of baffle 14, the shank of bolt two 16 is embedded in limit slot 17, connecting block 19 is integrally formed on the outside of the side wall of protective cover 13, vertical through-hole is opened in connecting block 19, horizontal bolt three 20 is threadedly connected on the side wall of connecting block 19, the water pipe that can pass in the through-hole of connecting block 19 is cooled liquid, bolt three 20 is screwed, and water pipe is tightly contacted, so that water pipe is fixed with connecting block 19.

[0026] See Figs. 2 to 5 Grinding wheel 5 is located in the inside of protective cover 13, motor is installed in the inside of connecting shaft 4, grinding wheel 5 is rotatably connected on the outside of the end surface of connecting shaft 4, motor output shaft passes through the end surface of connecting shaft 4, grinding wheel 5 is fixedly connected with motor output shaft, collar 7 is sleeved on connecting shaft 4, collar 7 is integrally formed with connecting arm 6, connecting arm 6 is fixedly connected by two mutually perpendicular side walls, reinforcing sheet 21 is connected between the two side walls, connecting arm 6 presents L type, the plane where the side wall of connecting arm 6 is connected with collar 7 is parallel to the front side of column 3, the plane where the other side wall of connecting arm 6 is parallel to the side of column 3, L type limit plate 8 is further included, two horizontal waist type grooves 12 are opened in one side wall of limit plate 8, two screw one 10 are respectively passed in each waist type groove 12, and screw one 10 passes through the side wall of connecting arm 6 away from connecting shaft 4, nut 11 is sleeved on screw one 10, the side wall of connecting arm 6 and limit plate 8 is located between the tail of screw one 10 and nut 11, connecting arm 6 and limit plate 8 form recess, guide column 9 is fixedly connected on the side of column 3, guide column 9 is embedded in the recess formed by connecting arm 6 and limit plate 8, and the two side surfaces of guide column 9 are in contact with the two side walls of limit plate 8 respectively.

[0027] Working principle: the workpiece is placed on the magnetic plate of the workbench 2, the magnetic plate is powered, the magnetic plate generates suction force, the workpiece is attracted, the workbench 2 is moved, the workpiece is moved to the lower side of the grinding wheel 5, the lifting mechanism drives the grinding wheel 5 to descend, the grinding wheel 5 is in contact with the workpiece, the grinding wheel 5 rotates to polish the workpiece, when polishing, horizontal friction and vertical pressure are generated between the grinding wheel 5 and the workpiece, the vertical force between the friction wheel and the workpiece makes the grinding wheel 5 and the connecting shaft 4 swing vertically, the connecting shaft 4 drives the connecting arm 6 and the limiting plate 8 to move together, the side wall of the limiting plate 8 is in contact with the guide column 9, when the limiting plate 8 swings vertically, it is blocked by the guide column 9, so that the limiting plate 8, the connecting shaft 4 and the grinding wheel 5 do not swing vertically when polishing the workpiece, the precision of the polished workpiece is reduced, the material is wasted, when polishing, the water pipe on the side of the protective cover 13 sprays cooling liquid on the workpiece and the grinding wheel 5, reducing the heat generated by the workpiece and the grinding wheel 5 during polishing.

Claims

1. A flat surface grinding machine, comprising a base (1), a movable workbench (2) installed above the base (1), a hollow column (3) arranged behind the base (1), a lifting mechanism arranged inside the column (3), a sliding groove opened on the side of the column (3) facing the front of the workbench (2), a horizontal connecting shaft (4) connected to the lifting mechanism, the connecting shaft (4) penetrating through the sliding groove and located above the workbench (2), and a grinding wheel (5) rotationally connected to the connecting shaft (4), characterized in that, The limiting mechanism comprises a L-shaped connecting arm (6), one end of the side wall of the connecting arm (6) is integrally formed with a clasp (7), the clasp (7) is sleeved on the connecting shaft (4), the plane where the side wall of the connecting arm (6) connected with the clasp (7) is parallel to the front side of the stand (3), the plane where the other side wall of the connecting arm (6) is parallel to the side of the stand (3), the other side wall of the connecting arm (6) is fixedly connected with a L-shaped limiting plate (8) through a connecting piece, the connecting arm (6) and the limiting plate (8) form a groove, the side of the stand (3) is fixedly connected with a guide column (9), the guide column (9) is embedded in the groove formed by the connecting arm (6) and the limiting plate (8), and the two sides of the guide column (9) are in contact with the two side walls of the limiting plate (8) respectively.

2. A machine according to claim 1, wherein The connecting piece is a bolt (10) and a nut (11), the side wall of the limiting plate (8) connected with the connecting arm (6) is provided with two horizontal waist-shaped grooves (12), the two waist-shaped grooves (12) are arranged in up-down direction, two bolts (10) are respectively arranged in each waist-shaped groove (12), the bolt (10) penetrates the side wall of the connecting arm (6), the nut (11) is sleeved on the bolt (10), and the side wall of the limiting plate (8) and the connecting arm (6) is located between the tail of the bolt (10) and the nut (11).

3. A machine according to claim 1, wherein The connecting shaft (4) is fixedly connected with a protective cover (13), the side of the protective cover (13) is fixed with the connecting shaft (4), the bottom and one side of the protective cover (13) are provided with openings, the grinding wheel (5) is located in the protective cover (13), the two side edges of the side opening of the protective cover (13) are respectively hingedly connected with a vertical baffle (14) and a threaded sleeve (15), the side wall of the threaded sleeve (15) is provided with a horizontal threaded hole, the threaded sleeve (15) is connected with a bolt (16) through the threaded hole, the side wall of the baffle (14) is fixedly connected with a limiting groove (17), and the shank of the bolt (16) is embedded in the limiting groove (17).

4. A machine according to claim 1, wherein The workbench (2) is fixedly connected with a blocking edge (18) at the circumferential edge.

5. A machine according to claim 3, wherein The side wall of the protective cover (13) is integrally formed with a connecting block (19) outside, the connecting block (19) is provided with a vertical through hole, and the side wall of the connecting block (19) is threadedly connected with a horizontal bolt (20).

6. A machine according to claim 1, wherein The two side walls of the connecting arm (6) are fixedly connected with a reinforcing sheet (21).

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