Axial positioning device for cylindrical grinding machine

Abstract

The utility model relates to the technical field of cylindrical grinding machines, in particular to an axial positioning device for a cylindrical grinding machine, which comprises a machine tool, a mounting groove is arranged on the upper surface of the machine tool, a moving plate is arranged above the mounting groove, a mounting frame is fixedly connected to the rear side of the upper surface of the moving plate, and a first motor is fixedly mounted on the right surface of the mounting frame. The output shaft end of the first motor is fixedly connected with a bidirectional lead screw. The first motor is started to drive the bidirectional lead screw to rotate, the two nut plates are driven to get close to each other, the two nut plates drive the two positioning plates to get close to each other, the two positioning plates clamp and fix a workpiece, the second motor is started to drive the operation shaft and the gear to rotate, and the toothed plate meshed with the gear drives the sliding block and the movable plate to move. By means of the technical scheme, the workpiece is axially fixed above the machine tool, axial deviation of the workpiece caused by mechanical impact can be effectively prevented, machining errors caused by displacement are effectively avoided, the size precision of products is improved, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of cylindrical grinders, in particular to an axial positioning device for cylindrical grinders. Background Art

[0002] External cylindrical grinding machine is a kind of grinding machine specially used for machining cylindrical, conical or other shaped outer surfaces and shaft shoulder end faces of workpieces. It is one of the most widely used types of grinding machines and can process various cylindrical and conical outer surfaces and shaft shoulder end faces. External cylindrical grinding machine can not only process hard materials such as hardened steel, cemented carbide, etc., but also brittle materials such as glass and granite.

[0003] During the process of machining a workpiece by a cylindrical grinder, the workpiece is prone to axial displacement due to mechanical impact. This position deviation will lead to machining errors, thereby affecting the dimensional accuracy of the product. Therefore, an axial positioning device for a cylindrical grinder is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an axial positioning device for a cylindrical grinding machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an axial positioning device for an external cylindrical grinding machine, comprising a machine tool, a mounting groove is provided on the upper surface of the machine tool, a movable plate is provided above the mounting groove, a mounting frame is fixedly connected to the rear side of the upper surface of the movable plate, a first motor is fixedly installed on the right surface of the mounting frame, a bidirectional screw rod is fixedly connected to the output shaft end of the first motor, the bidirectional screw rod passes through the right surface of the mounting frame, the bidirectional screw rod is rotatably connected to the inner side wall of the mounting frame through a bearing, the outer surface of the bidirectional screw rod is provided with two sections of external threads in opposite directions, and the outer wall thread of the bidirectional screw rod Two nut plates are connected, and a positioning plate is fixedly connected to the front surface of the nut plate, and a workpiece is in close contact between the two positioning plates. A slider is slidably provided inside the mounting groove, and the lower surface of the movable plate is fixedly connected to the upper surface of the slider, and the lower surface of the slider is fixedly connected to a toothed plate. A second motor is fixedly installed on the front surface of the machine tool, and an operating shaft is fixedly connected to the output shaft end of the second motor, and the operating shaft passes through the front surface of the machine tool. The operating shaft is rotatably connected to the inner side wall of the mounting groove through a bearing, and a gear is fixedly connected to the outer side wall of the operating shaft, and the gear is meshingly connected to the toothed plate.

[0006] As a further preferred embodiment of the technical solution: a sliding rod is fixedly connected to the inner side wall of the installation groove, and an outer side wall of the sliding rod is slidably connected to the sliding block.

[0007] As a further preferred embodiment of the technical solution: the inner wall of the installation groove is symmetrically provided with two limit grooves, the outer wall of the sliding block is symmetrically welded with two limit plates, and the outer wall of the limit plate is slidably connected to the inner wall of the limit groove.

[0008] As a further preferred embodiment of the technical solution: the upper surface of the movable plate is fixedly connected to a support table, and the lower surface of the workpiece is in movable contact with the upper surface of the support table.

[0009] As a further preferred embodiment of the technical solution: a grinding device is provided above the machine tool.

[0010] As a further preferred embodiment of the technical solution: a mounting plate is welded to the left side of the upper surface of the machine tool, a hydraulic cylinder is fixedly mounted on the right surface of the mounting plate, and one end of the piston rod of the hydraulic cylinder is fixedly connected to the grinding device.

[0011] As a further preferred embodiment of the present technical solution: four legs are welded to the lower surface of the machine tool.

[0012] As a further preferred embodiment of the technical solution: the inner side wall of the mounting frame is fixedly connected to two guide rods, and the outer side wall of the guide rod is slidably connected to the nut plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model places the workpiece above the movable plate, starts the first motor to drive the bidirectional lead screw to rotate, drives the two nut plates to approach each other, the two nut plates drive the two positioning plates to approach each other, the two positioning plates clamp and fix the bottom of the workpiece, starts the second motor to drive the operating shaft and the gear to rotate, and the toothed plate meshing with the gear drives the slider and the movable plate to move, thereby axially fixing the workpiece above the machine tool, which can effectively prevent the axial deviation of the workpiece caused by mechanical impact, effectively avoids the processing error caused by displacement, improves the dimensional accuracy of the product, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the machine tool in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the moving plate and the first motor in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the second motor and gear in the utility model.

[0019] In the figure: 1. machine tool; 2. mounting groove; 3. moving plate; 4. mounting frame; 5. first motor; 6. bidirectional screw rod; 7. nut plate; 8. positioning plate; 9. workpiece; 10. slider; 11. tooth plate; 12. second motor; 13. operating shaft; 14. gear; 15. slide bar; 16. limit groove; 17. limit plate; 18. support table; 19. grinding device; 20. mounting plate; 21. hydraulic cylinder; 22. support leg; 23. guide rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limitations on the present application. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] See also Figure 1-4The utility model provides a technical solution: an axial positioning device for an external cylindrical grinder, comprising a machine tool 1, a mounting groove 2 is provided on the upper surface of the machine tool 1, a movable plate 3 is provided above the mounting groove 2, a mounting frame 4 is fixedly connected to the rear side of the upper surface of the movable plate 3, a first motor 5 is fixedly installed on the right surface of the mounting frame 4, a bidirectional screw rod 6 is fixedly connected to the output shaft end of the first motor 5, the bidirectional screw rod 6 passes through the right surface of the mounting frame 4, the bidirectional screw rod 6 is rotatably connected to the inner side wall of the mounting frame 4 through a bearing, two sections of external threads in opposite directions are provided on the outer surface of the bidirectional screw rod 6, two nut plates 7 are threadedly connected to the outer side wall of the bidirectional screw rod 6, a positioning plate 8 is fixedly connected to the front surface of the nut plate 7, a workpiece 9 is in close contact between the two positioning plates 8, a slider 10 is slidingly provided inside the mounting groove 2, the lower surface of the movable plate 3 is fixedly connected to the upper surface of the slider 10, the slider 1 0 is fixedly connected with a toothed plate 11 on the lower surface of the machine tool 1, a second motor 12 is fixedly installed on the front surface of the machine tool 1, an operating shaft 13 is fixedly connected with the output shaft end of the second motor 12, the operating shaft 13 passes through the front surface of the machine tool 1, the operating shaft 13 is rotatably connected to the inner wall of the mounting groove 2 through a bearing, a gear 14 is fixedly connected to the outer wall of the operating shaft 13, and the gear 14 is meshingly connected with the toothed plate 11; the workpiece 9 is placed above the movable plate 3, the first motor 5 is started to drive the bidirectional screw rod 6 to rotate, and the two nut plates 7 are driven to approach each other, and the two nut plates 7 drive the two positioning plates 8 to approach each other, and the two positioning plates 8 clamp and fix the lower part of the workpiece 9, the second motor 12 is started to drive the operating shaft 13 and the gear 14 to rotate, and the toothed plate 11 meshing with the gear 14 drives the slider 10 and the movable plate 3 to move, so that the workpiece 9 is axially fixed above the machine tool 1.

[0023] In this embodiment, specifically: the inner wall of the installation groove 2 is fixedly connected with a slide bar 15 , and the outer wall of the slide bar 15 is slidably connected to the slider 10 ; so that the slider 10 moves along the direction of the slide bar 15 .

[0024] In this embodiment, specifically: two limit grooves 16 are symmetrically opened on the inner wall of the installation groove 2, and two limit plates 17 are symmetrically welded on the outer wall of the slider 10, and the outer wall of the limit plate 17 is slidingly connected to the inner wall of the limit groove 16; so that the slider 10 moves along the direction of the limit groove 16.

[0025] In this embodiment, specifically: the upper surface of the movable plate 3 is fixedly connected to a support platform 18, and the lower surface of the workpiece 9 is in movable contact with the upper surface of the support platform 18; the upper surface of the support platform 18 is provided with an arc surface that matches the workpiece 9, and the workpiece 9 is placed on the upper surface of the support platform 18 during operation.

[0026] In this embodiment, specifically: a grinding device 19 is provided above the machine tool 1 , and is used for processing a circular surface of the workpiece 9 .

[0027] In this embodiment, specifically: a mounting plate 20 is welded on the left side of the upper surface of the machine tool 1, a hydraulic cylinder 21 is fixedly mounted on the right surface of the mounting plate 20, and one end of the piston rod of the hydraulic cylinder 21 is fixedly connected to the grinding device 19; the piston rod of the hydraulic cylinder 21 is started to extend, driving the grinding device 19 to approach the workpiece 9, thereby completing the work of grinding the circular surface.

[0028] In this embodiment, specifically: four legs 22 are welded on the lower surface of the machine tool 1 , and are used to support the machine tool 1 .

[0029] In this embodiment, specifically: two guide rods 23 are fixedly connected to the inner side wall of the mounting frame 4 , and the outer side wall of the guide rod 23 is slidably connected to the nut plate 7 ; so that the nut plate 7 moves in the direction of the guide rod 23 .

[0030] The working principle of the utility model is: placing the workpiece 9 above the movable plate 3, starting the first motor 5 to drive the bidirectional screw 6 to rotate, driving the two nut plates 7 to approach each other, the two nut plates 7 drive the two positioning plates 8 to approach each other, the two positioning plates 8 clamp and fix the bottom of the workpiece 9, starting the second motor 12 to drive the operating shaft 13 and the gear 14 to rotate, the toothed plate 11 meshing with the gear 14 drives the slider 10 and the movable plate 3 to move, so that the workpiece 9 is axially fixed above the machine tool 1, thereby constituting an axial positioning device for an external cylindrical grinder, which can effectively prevent the axial deviation of the workpiece 9 due to the effect of mechanical impact, effectively avoid the processing error caused by displacement, improve the dimensional accuracy of the product, and is more practical.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An axial positioning device for a cylindrical grinding machine, comprising a machine tool (1), characterized in that: The upper surface of the machine tool (1) is provided with a mounting groove (2), and a movable plate (3) is provided above the mounting groove (2). The rear side of the upper surface of the movable plate (3) is fixedly connected to a mounting frame (4). The right surface of the mounting frame (4) is fixedly installed with a first motor (5). The output shaft end of the first motor (5) is fixedly connected to a bidirectional screw rod (6). The bidirectional screw rod (6) passes through the right surface of the mounting frame (4). The bidirectional screw rod (6) is rotatably connected to the inner side wall of the mounting frame (4) via a bearing. The outer surface of the bidirectional screw rod (6) is provided with two sections of external threads in opposite directions. The outer side wall of the bidirectional screw rod (6) is threadedly connected to two nut plates (7). The front surface of the nut plate (7) is fixedly connected to a positioning plate (8). The two A workpiece (9) is in close contact between the positioning plates (8), a slider (10) is slidably provided inside the mounting groove (2), the lower surface of the movable plate (3) is fixedly connected to the upper surface of the slider (10), the lower surface of the slider (10) is fixedly connected to a toothed plate (11), a second motor (12) is fixedly installed on the front surface of the machine tool (1), an output shaft end of the second motor (12) is fixedly connected to an operating shaft (13), the operating shaft (13) passes through the front surface of the machine tool (1), the operating shaft (13) is rotatably connected to the inner side wall of the mounting groove (2) via a bearing, the outer side wall of the operating shaft (13) is fixedly connected to a gear (14), and the gear (14) is meshingly connected to the toothed plate (11).

2. The axial positioning device for a cylindrical grinding machine according to claim 1, characterized in that: The inner side wall of the installation groove (2) is fixedly connected with a sliding rod (15), and the outer side wall of the sliding rod (15) is slidably connected to the sliding block (10).

3. The axial positioning device for a cylindrical grinding machine according to claim 2, characterized in that: The inner side wall of the installation groove (2) is symmetrically provided with two limit grooves (16), the outer side wall of the sliding block (10) is symmetrically welded with two limit plates (17), and the outer side wall of the limit plate (17) is slidably connected to the inner side wall of the limit groove (16).

4. The axial positioning device for a cylindrical grinding machine according to claim 2, characterized in that: The upper surface of the movable plate (3) is fixedly connected to a support platform (18), and the lower surface of the workpiece (9) is in movable contact with the upper surface of the support platform (18).

5. The axial positioning device for a cylindrical grinding machine according to claim 2, characterized in that: A grinding device (19) is provided above the machine tool (1).

6. The axial positioning device for a cylindrical grinding machine according to claim 5, characterized in that: A mounting plate (20) is welded on the left side of the upper surface of the machine tool (1), a hydraulic cylinder (21) is fixedly mounted on the right surface of the mounting plate (20), and one end of the piston rod of the hydraulic cylinder (21) is fixedly connected to the grinding device (19).

7. The axial positioning device for a cylindrical grinding machine according to claim 6, characterized in that: Four supporting legs (22) are welded to the lower surface of the machine tool (1).

8. The axial positioning device for a cylindrical grinding machine according to claim 6, characterized in that: Two guide rods (23) are fixedly connected to the inner side wall of the mounting frame (4), and the outer side wall of the guide rod (23) is slidably connected to the nut plate (7).

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