High-precision centerless grinding machine

Abstract

The utility model discloses a high-precision centerless grinding machine, which relates to the technical field of grinding machines and comprises a grinding machine body, a grinding mechanism is arranged on the grinding machine body, a guide wheel mechanism corresponding to the grinding mechanism is further arranged on the grinding machine body, and a feeding mechanism is further arranged below the position between the grinding mechanism and the guide wheel mechanism. The feeding mechanism comprises a fixed seat, a sliding cavity is formed in the inner side of the fixed seat, a sliding block is placed in the sliding cavity, the top of the sliding block is fixedly connected with an elastic clamping seat for clamping a workpiece, a threaded lead screw is arranged on the inner side of the fixed seat, and the threaded lead screw is in threaded connection with the sliding block; the compression spring pushes the L-shaped sliding seat to move, so that the conical rotating sleeve at the end part of the L-shaped sliding seat is close to the conical top seat to clamp a workpiece, the workpiece can be fed for multiple times by being matched with the feeding mechanism, manual feeding of a worker is not needed, and the safety during use is improved while the labor intensity is reduced.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of grinding machines, in particular to a high-precision centerless grinding machine. Background Art

[0002] Centerless grinder is a precision grinding machine tool that plays an important role in industrial production. The structure of centerless grinder is relatively special. It is mainly composed of grinding wheel, guide wheel, support plate and bed. The workpiece is placed between the grinding wheel and the guide wheel. The guide wheel drives the workpiece to rotate under the action of friction and rotates in the same direction at a relatively slow speed. On the one hand, it drives the workpiece to rotate to achieve circular feed. On the other hand, the inclination of the guide wheel can control the axial feed of the workpiece. The grinding wheel grinds the outer circle of the workpiece through high-speed rotation.

[0003] However, in practice, people have noticed that during processing, the feed mechanism pushes the cylindrical workpiece between the grinding wheel and the guide wheel for processing. When grinding workpieces with various diameters such as stepped shafts, it is necessary to adjust the distance between the grinding wheel and the guide wheel to grind the workpiece multiple times. The feed mechanism cannot meet the requirements of multiple feeding. Therefore, in most cases, the staff needs to manually place the workpiece to the grinding position, which is not only inefficient, but also, when preventing the workpiece, the distance between the staff's fingers and the grinding wheel is close, which is more dangerous. Utility Model Content

[0004] The purpose of this utility model is to provide a high-precision centerless grinder that clamps the workpiece using a fixed bracket and a movable bracket. In conjunction with a feed mechanism at the bottom, the machine can feed the material multiple times after clamping. The operator only needs to adjust the distance between the grinding wheel and the guide wheel to facilitate grinding of stepped shafts of various diameters. This solves the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A high-precision centerless grinder comprises a grinding machine bed, a grinding mechanism is provided on the grinding machine bed, a guide wheel mechanism corresponding to the grinding mechanism is provided on the grinding machine bed, and a feeding mechanism is provided below the grinding mechanism and the guide wheel mechanism;

[0007] The feeding mechanism includes a fixed seat, a sliding cavity is provided on the inner side of the fixed seat, and a slider is placed in the sliding cavity. The top of the slider is fixedly connected to an elastic clamping seat for clamping the workpiece. A threaded screw is provided on the inner side of the fixed seat, and the threaded screw is threadedly connected to the slider, and the two ends of the threaded screw are respectively connected to the two single movable connections of the fixed seat through bearings.

[0008] As a further technical solution of the present invention, the elastic clamping seat includes a fixed bracket and a movable bracket, and the movable bracket is slidably connected to the fixed bracket.

[0009] As a further technical solution of the present invention, the fixed bracket includes an L-shaped connecting plate, the bottom of the L-shaped connecting plate is fixed to the slider bolt, and the top of the L-shaped connecting plate away from the slider is movably connected to a conical top seat, and the end of the conical top seat is conically set.

[0010] As a further technical solution of the present invention, a limiting slide rod is also welded on the L-shaped connecting plate, a compression spring is sleeved on the outer side of the limiting slide rod, and the other end of the limiting slide rod is bolted to an end baffle, and the bottom of the end baffle is bolted to one end of the L-shaped connecting plate close to the slider.

[0011] As a further technical solution of the present invention, the movable bracket includes an L-shaped sliding seat, which is provided with a limiting hole that slides with the limiting slide rod. The end of the limiting slide rod passes through the inner side of the limiting hole, and one end of the compression spring is in contact with the end baffle, and the other end is in contact with the side of the L-shaped sliding seat.

[0012] As a further technical solution of the present invention, a sliding groove is provided at the bottom of the L-shaped sliding seat, the L-shaped connecting plate is inserted into the sliding groove, and the L-shaped connecting plate is slidably connected to the sliding groove.

[0013] As a further technical solution of the present invention, an extension link is welded to one side of the L-shaped sliding seat close to the fixed bracket, and the end of the extension link is movably connected to a conical rotating sleeve, which is correspondingly arranged to the conical top seat.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model uses a compression spring to push the L-shaped sliding seat to move, so that the conical rotating sleeve at the end of the L-shaped sliding seat moves closer to the conical top seat to clamp the workpiece. In combination with the feeding mechanism, multiple feeding of the workpiece can be achieved without manual feeding by the staff, which reduces labor intensity and improves safety during use.

[0016] The utility model places the workpiece between the conical rotating sleeve and the conical top seat. Since the conical top seat and the L-shaped connecting plate are rotatably connected, and the extended connecting rod and the conical rotating sleeve are rotatably connected, the workpiece can still be rotated normally after being clamped, thereby ensuring normal grinding of the workpiece.

[0017] In the utility model, after the movable bracket and the fixed bracket clamp the workpiece, the threaded screw and the slider are matched with each other to make the slider slide inside the fixed seat, thereby driving the workpiece to move and realizing multiple feed processing of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of the utility model in use state.

[0019] Figure 2 This utility model Figure 1 A partial enlarged schematic diagram.

[0020] Figure 3 This utility model Figure 1 Another perspective of the picture.

[0021] Figure 4 This utility model Figure 3 A partial enlarged schematic diagram.

[0022] Figure 5 This utility model Figure 1 Schematic diagram of part of the structure.

[0023] Figure 6 This utility model Figure 5 A partial enlarged schematic diagram.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing bracket in the utility model.

[0025] Figure 8 This utility model Figure 7 A partial enlarged schematic diagram.

[0026] Figure 9 It is a partially enlarged schematic diagram of the movable branch in the utility model.

[0027] In the picture:

[0028] Fixed seat 1, drive motor 2, screw rod 3, slider 4, fixed bracket 5, L-shaped connecting plate 51, conical top seat 52, limiting slide 53, compression spring 54, movable bracket 6, L-shaped sliding seat 61, slide groove 62, limiting hole 63, extension connecting rod 64, conical rotating sleeve 65, grinding machine bed 7, grinding mechanism 8, grinding wheel 81, guide wheel mechanism 9, guide roller 91. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-9The embodiment of the utility model provides a high-precision centerless grinder, including a grinding machine bed 7, a grinding mechanism 8 is provided on the grinding machine bed 7, a guide wheel mechanism 9 corresponding to the grinding mechanism 8 is also provided on the grinding machine bed 7, and a feeding mechanism is further provided below the grinding mechanism 8 and the guide wheel mechanism 9;

[0031] The feeding mechanism includes a fixed seat 1, a sliding cavity is provided on the inner side of the fixed seat 1, and a slider 4 is placed in the sliding cavity, the top of the slider 4 is fixedly connected to an elastic clamping seat for clamping the workpiece, and a threaded screw 3 is provided on the inner side of the fixed seat 1. The threaded screw 3 is threadedly connected to the slider 4, and the two ends of the threaded screw 3 are respectively connected to the two single movable connections of the fixed seat 1 through bearings.

[0032] In this embodiment, the elastic clamping seat includes a fixed bracket 5 and a movable bracket 6 , and the movable bracket 6 is slidably connected to the fixed bracket 5 .

[0033] In this embodiment, the fixing bracket 5 includes an L-shaped connecting plate 51, the bottom of the L-shaped connecting plate 51 is bolted to the slider 4, and the top of the L-shaped connecting plate 51 away from the slider 4 is movably connected to a conical top seat 52, and the end of the conical top seat 52 is conically set.

[0034] In this embodiment, a limiting slide rod 53 is also welded on the L-shaped connecting plate 51, and a compression spring 54 is sleeved on the outer side of the limiting slide rod 53. The other end of the limiting slide rod 53 is bolted to an end baffle, and the bottom of the end baffle is bolted to the end of the L-shaped connecting plate 51 close to the slider 4.

[0035] In this embodiment, the movable bracket 6 includes an L-shaped sliding seat 61, which is provided with a limiting hole 63 that slides with the limiting slide rod 53. The end of the limiting slide rod 53 passes through the inner side of the limiting hole 63, and one end of the compression spring 54 is in contact with the end baffle, and the other end is in contact with the side of the L-shaped sliding seat 61.

[0036] In this embodiment, a sliding groove 62 is provided at the bottom of the L-shaped sliding seat 61 , the L-shaped connecting plate 51 is inserted into the sliding groove 62 , and the L-shaped connecting plate 51 is slidably connected to the sliding groove 62 .

[0037] In this embodiment, an extension link 64 is welded to one side of the L-shaped sliding seat 61 close to the fixed bracket 5 , and the end of the extension link 64 is movably connected to a conical rotating sleeve 65 , which is correspondingly arranged to the conical top seat 52 .

[0038] By adopting the above technical solution, the workpiece is placed between the conical top seat 52 and the conical rotating sleeve 65, and the compression spring 54 applies a thrust to the L-shaped sliding seat 61, so that the L-shaped sliding seat 61 pushes the extension connecting rod 64 to move closer to the conical top seat 52, and the workpiece is clamped by the extrusion fit between the conical top seat 52 and the conical rotating sleeve 6, and then the motor 2 is driven through the threaded fit between the threaded screw 3 and the slider 4, so that the slider 4 drives the fixed bracket 5 to move, and the workpiece is moved between the grinding mechanism 8 and the guide wheel mechanism 9, and the grinding mechanism 8 and the guide wheel mechanism 9 are respectively fitted with the workpiece. , and drives the workpiece to rotate. Since the conical top seat 52 and the L-shaped connecting plate 51 and the extension connecting rod 64 and the conical rotating sleeve 65 are all rotationally connected, the workpiece can still rotate after the workpiece is supported. After grinding is completed, the feed mechanism withdraws the workpiece, and the staff adjusts the distance between the grinding mechanism 8 and the guide wheel mechanism 9. The feed mechanism drives the workpiece to re-enter the grinding mechanism 8 and the guide wheel mechanism 9 for grinding. It can grind stepped shafts with different diameters and realize automatic multiple feeding of the workpiece, saving labor intensity while improving safety.

[0039] In this embodiment, the end of the fixing base 1 is bolted with a driving motor 2 , and the output shaft of the driving motor 2 passes through the fixing base 1 and is transmission-connected to the end of the threaded screw 3 .

[0040] In this embodiment, the axis of the conical top seat 52 coincides with the axis of the conical rotating sleeve 65, and the ends of the conical top seat 52 and the conical rotating sleeve 65 are respectively set to be conical, so as to clamp the center position of the workpiece without affecting the normal grinding of the workpiece.

[0041] In this embodiment, the grinding mechanism 8 includes a driving mechanism and a grinding wheel 81. The grinding wheel 81 is fixedly connected to the end of the driving mechanism, and the driving mechanism drives the grinding wheel 81 to rotate. The guide wheel mechanism 9 includes a servo mechanism and a guide roller 91. The guide roller 91 is fixedly connected to the end of the servo mechanism, and the servo mechanism drives the guide roller 91 to rotate.

[0042] In this embodiment, the grinding machine bed 7 is further provided with a sliding mechanism and an adjusting mechanism, wherein the sliding mechanism is fixedly connected between the grinding machine bed 7 and the grinding mechanism 8 , and the adjusting mechanism is fixedly connected between the grinding machine bed 7 and the guide wheel mechanism 9 .

[0043] The position of the grinding mechanism 8 on the grinding machine bed 7 is adjusted by the sliding mechanism, and the position of the guide wheel mechanism 9 on the grinding machine bed 7 is adjusted by the adjusting mechanism, thereby adjusting the distance between the grinding mechanism 8 and the guide wheel mechanism 9, and the workpiece is moved between the grinding wheel 81 and the guide roller 91. The driving mechanism drives the grinding wheel 81 to rotate at high speed, and the servo mechanism drives the guide roller 91 to rotate at low speed. Both the grinding wheel 81 and the guide roller 91 are in contact with the surface of the workpiece, thereby driving the workpiece to rotate (the present invention only improves the workpiece feeding method and does not change the basic principle of grinding. The basic principle of the centerless grinder is already a technical solution widely known in the technical field, so it will not be repeated here).

[0044] The working principle of the present utility model is as follows: when in use, first drive the motor 2 to drive the threaded screw 3 to rotate, and through the threaded fit between the threaded screw 3 and the slider 4, the fixed bracket 5 is moved to the front end of the grinding machine bed 7, and then the L-shaped sliding seat 61 is pulled backward to place the workpiece between the conical rotating sleeve 65 and the conical top seat 52. The compression spring 54 applies pressure to the L-shaped sliding seat 61, pushing the L-shaped sliding seat 61 closer to the conical top seat 52. The L-shaped sliding seat 61 drives the conical rotating sleeve 65 to move until the conical rotating sleeve 65 is tightly attached to the end of the workpiece, and then the spacing between the grinding wheel 81 and the guide roller 91 is adjusted. At this time, the driving motor 2 drives the threaded screw 3 rotates in the opposite direction, so that the slider drives the fixed bracket 5 to move closer to the grinding mechanism 8. The high-speed rotating grinding wheel 81 and the low-speed rotating guide roller 91 respectively fit the two sides of the workpiece to grind the workpiece. The driving motor 2 can realize multiple feeding of the workpiece through the mutual cooperation between the screw rod 3 and the slider 4. The staff only needs to adjust the distance between the grinding wheel 81 and the guide roller 9 according to the diameter of the workpiece. Multiple feeding processing can be performed on workpieces with different sizes, thereby improving grinding efficiency and usability, and eliminating the need for manual feeding by the staff, thereby improving safety during use. The structure is simple, the operation is very convenient, and the labor intensity is effectively reduced.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0046] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-precision centerless grinding machine, characterized by: The invention comprises a grinding machine bed (7), a grinding mechanism (8) is provided on the grinding machine bed (7), a guide wheel mechanism (9) corresponding to the grinding mechanism (8) is also provided on the grinding machine bed (7), and a feeding mechanism is further provided below the grinding mechanism (8) and the guide wheel mechanism (9); The feeding mechanism includes a fixed seat (1), a sliding cavity is provided on the inner side of the fixed seat (1), and a slider (4) is placed in the sliding cavity, the top of the slider (4) is fixedly connected to an elastic clamping seat for clamping a workpiece, a threaded screw (3) is provided on the inner side of the fixed seat (1), the threaded screw (3) is threadedly connected to the slider (4), and the two ends of the threaded screw (3) are respectively connected to two single movable connections of the fixed seat (1) through bearings.

2. The high-precision centerless grinding machine according to claim 1, characterized in that: The elastic clamping seat comprises a fixed bracket (5) and a movable bracket (6), and the movable bracket (6) is slidably connected to the fixed bracket (5).

3. The high-precision centerless grinding machine according to claim 2, characterized in that: The fixing bracket (5) includes an L-shaped connecting plate (51), the bottom of the L-shaped connecting plate (51) is fixed to the slider (4) by bolts, and the top of the L-shaped connecting plate (51) away from the slider (4) is movably connected to a conical top seat (52), and the end of the conical top seat (52) is set in a conical shape.

4. The high-precision centerless grinding machine according to claim 3, characterized in that: A limiting slide bar (53) is further welded to the L-shaped connecting plate (51), a compression spring (54) is sleeved on the outer side of the limiting slide bar (53), an end baffle is fixed to the other end of the limiting slide bar (53) by bolts, and the bottom of the end baffle is fixed to one end of the L-shaped connecting plate (51) close to the slider (4) by bolts.

5. The high-precision centerless grinding machine according to claim 2, characterized in that: The movable bracket (6) includes an L-shaped sliding seat (61), and the L-shaped sliding seat (61) is provided with a limiting hole (63) that slides with the limiting slide rod (53), the end of the limiting slide rod (53) passes through the inner side of the limiting hole (63), and one end of the compression spring (54) is in contact with the end baffle, and the other end is in contact with the side of the L-shaped sliding seat (61).

6. The high-precision centerless grinding machine according to claim 5, characterized in that: The bottom of the L-shaped sliding seat (61) is provided with a sliding groove (62), the L-shaped connecting plate (51) is inserted into the sliding groove (62), and the L-shaped connecting plate (51) is slidably connected to the sliding groove (62).

7. The high-precision centerless grinding machine according to claim 6, characterized in that: An extension link (64) is welded to one side of the L-shaped sliding seat (61) close to the fixed bracket (5), and the end of the extension link (64) is movably connected to a conical rotating sleeve (65), and the conical rotating sleeve (65) is correspondingly arranged to the conical top seat (52).

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