Middle and rear guide clamping mechanism of centerless lathe

Abstract

The utility model discloses a middle rear guide clamping mechanism of a centerless lathe, which comprises a lathe device and middle rear guide clamping devices, the middle rear guide clamping devices are uniformly arranged on the lathe device, and the lathe device comprises a workbench, a lathe spindle, a cylindrical workpiece, a slide rail and a support fixing frame. The lathe spindle is fixedly installed at the top end of the workbench, the cylindrical workpiece is fixedly connected to one side of the lathe spindle in a clamped mode, the bottom end of the sliding rail is fixedly connected to one side of the top end of the workbench, and the top end of the supporting and fixing frame is fixedly connected to the bottom end of the workbench. The number of the middle and rear guide clamping devices can be conveniently increased or decreased according to the size and weight of a workpiece, the two idler wheels are synchronously controlled to move up and down through the linkage wheel disc, the same clamping force is applied to the workpiece in the up-down direction, the workpiece clamping accuracy is improved, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the field of lathes, in particular to a center-rear guide clamping mechanism of a centerless lathe. Background Art

[0002] A centerless lathe is a machine tool used to process cylindrical workpieces. It is widely used in machinery manufacturing, automobile manufacturing, aerospace and other fields. The rear guide clamping mechanism of the traditional centerless lathe has problems such as complex structure, difficult adjustment, and insufficient clamping force. It cannot meet the needs of high-precision and high-efficiency processing. Therefore, a centerless lathe rear guide clamping mechanism is urgently needed to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a center-rear guide clamping mechanism for a centerless lathe to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a center-rear guide clamping mechanism of a centerless lathe, comprising a lathe device and a center-rear guide clamping device, wherein the center-rear guide clamping device is evenly arranged on the lathe device, and the lathe device comprises a worktable, a lathe spindle, a cylindrical workpiece, a slide rail and a supporting and fixing frame, the lathe spindle is fixedly installed on the top of the worktable, the cylindrical workpiece is clamped and connected to one side of the lathe spindle, the bottom end of the slide rail is fixedly connected to one side of the top of the worktable, and the top end of the supporting and fixing frame is fixedly connected to the bottom end of the worktable.

[0005] Preferably, the middle and rear guide clamping device includes a support frame, an inspection cover, a fastening bolt, an electric push rod, a sliding rod, a sliding adjustment plate, a support cross bar, a roller, a linkage wheel, a first fixed column, a connecting rod and a second fixed column. The inspection cover is symmetrically fixedly installed on both sides of the support frame, the fastening bolt is threadedly connected to the bottom end of one side of the support frame, the electric push rod is fixedly connected to the middle of the top end of the support frame, the sliding rod is symmetrically arranged, and the top end of the sliding rod is fixedly connected to the inner top end of the support frame, and the bottom end of the sliding rod is fixedly connected to the inner bottom end of the support frame, the sliding adjustment plate is symmetrically arranged, and The sliding adjustment plate is slidably connected to the sliding rod, the supporting cross bar is fixedly connected to one end of the sliding adjustment plate away from the fastening bolt, the roller is rotatably connected to the outer side of the supporting cross bar, the linkage wheel is rotatably connected to the inspection cover through a rotating shaft, the first fixing column is symmetrically fixedly connected to one side of the linkage wheel close to the sliding adjustment plate, the second fixing column is symmetrically fixedly connected to both sides of the sliding adjustment plate close to one end of the linkage wheel, the connecting rod is symmetrically arranged, and one end of the connecting rod is rotatably connected to the first fixing column, and the other end of the connecting rod is rotatably connected to the second fixing column.

[0006] Preferably, the bottom end of the support frame is slidably connected to the slide rail, and the threaded end of the fastening bolt is in contact with a side of the slide rail away from the cylindrical workpiece.

[0007] Preferably, the top end of the electric push rod is fixedly connected to an end of the sliding adjustment plate close to the electric push rod and away from the linkage wheel.

[0008] Preferably, a hole groove is formed through one side of the support frame close to the roller.

[0009] Preferably, the middle portion of the outer side of the roller is designed to be concave arc-shaped.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The utility model discloses adjusting the position of the center and rear guide clamping device by slidingly connecting the supporting frame of the center and rear guide clamping device and the slide rail of the lathe device, which is convenient for increasing or decreasing the number of the center and rear guide clamping devices according to the size and weight of the workpiece, and synchronously controlling the up and down movement of the two rollers by the linkage wheel disc, so that the same clamping force is applied to the up and down directions of the workpiece, thereby improving the clamping accuracy of the workpiece and facilitating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the lathe device in the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the middle and rear guide clamping device in the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the middle and rear guide clamping device in the utility model;

[0016] Figure 5 It is a partial structural schematic diagram of the middle and rear guide clamping device in the utility model.

[0017] In the figure: 1- lathe device, 2- middle and rear guide clamping device, 3- workbench, 4- lathe spindle, 5- cylindrical workpiece, 6- slide rail, 7- support fixing frame, 8- support frame, 9- maintenance cover, 10- fastening bolts, 11- electric push rod, 12- slide rod, 13- sliding adjustment plate, 14- supporting cross bar, 15- roller, 16- linkage wheel, 17- first fixed column, 18- connecting rod, 19- second fixed column. DETAILED DESCRIPTION

[0018] 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. 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 creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5 The utility model provides an embodiment: a center-rear guide clamping mechanism of a centerless lathe, comprising a lathe device 1 and a center-rear guide clamping device 2, the center-rear guide clamping device 2 is evenly arranged on the lathe device 1, the lathe device 1 comprises a workbench 3, a lathe spindle 4, a cylindrical workpiece 5, a slide rail 6 and a supporting fixed frame 7, the lathe spindle 4 is fixedly installed on the top of the workbench 3, the cylindrical workpiece 5 is clamped and connected to one side of the lathe spindle 4, the bottom end of the slide rail 6 is fixedly connected to one side of the top of the workbench 3, and the top end of the supporting fixed frame 7 is fixedly connected to the bottom end of the workbench 3.

[0020] The middle and rear guide clamping device 2 includes a support frame 8, an inspection cover 9, a fastening bolt 10, an electric push rod 11, a slide rod 12, a sliding adjustment plate 13, a support cross bar 14, a roller 15, a linkage wheel 16, a first fixed column 17, a connecting rod 18 and a second fixed column 19. The inspection cover 9 is symmetrically fixedly installed on both sides of the support frame 8, the fastening bolt 10 is threadedly connected to the bottom end of one side of the support frame 8, the electric push rod 11 is fixedly connected to the middle of the top end of the support frame 8, the slide rod 12 is symmetrically arranged, and the top end of the slide rod 12 is fixedly connected to the inner top end of the support frame 8, and the bottom end of the slide rod 12 is fixedly connected to the inner bottom end of the support frame 8, and the sliding adjustment plate 13 It is symmetrically arranged, and the sliding adjustment plate 13 is slidably connected to the sliding rod 12, the supporting cross bar 14 is fixedly connected to the end of the sliding adjustment plate 13 away from the fastening bolt 10, the roller 15 is rotatably connected to the outer side of the supporting cross bar 14, the linkage wheel 16 is rotatably connected to the inspection cover 9 through a rotating shaft, the first fixed column 17 is symmetrically fixedly connected to the side of the linkage wheel 16 close to the sliding adjustment plate 13, the second fixed column 19 is symmetrically fixedly connected to both sides of the end of the sliding adjustment plate 13 close to the linkage wheel 16, the connecting rod 18 is symmetrically arranged, and one end of the connecting rod 18 is rotatably connected to the first fixed column 17, and the other end of the connecting rod 18 is rotatably connected to the second fixed column 19.

[0021] The bottom end of the support frame 8 is slidably connected to the slide rail 6 , and the threaded end of the fastening bolt 10 contacts the side of the slide rail 6 away from the cylindrical workpiece 5 , and the outer groove of the roller 15 is located on the outer side of the cylindrical workpiece 5 .

[0022] The top end of the electric push rod 11 is fixedly connected to the end of the sliding adjustment plate 13 close to the electric push rod 11 away from the linkage wheel 16. The sliding adjustment plate 13 is driven to slide by the extension and retraction of the electric push rod 11, and the two sliding adjustment plates 13 move synchronously in opposite directions through the linkage wheel 16 and the connecting rod 18.

[0023] A hole is formed through one side of the support frame 8 close to the roller 15 , and the support cross bar 14 moves up and down in the hole.

[0024] The middle part of the outer side of the roller 15 is designed to be concave inwardly, so as to facilitate supporting the cylindrical workpiece 5.

[0025] Working principle: During use, the number of middle and rear guide clamping devices 2 to be used is determined according to the size and weight of the cylindrical workpiece 5, and then the support frame 8 is pushed to slide to the required position on the slide rail 6 by external force, and then the fastening bolts 10 are tightened by external force to start the support frame 8 until the threaded end of the fastening bolts 10 is close to the side end surface of the slide rail 6, and the required middle and rear guide clamping devices 2 are all fixed in turn, and then the electric push rod 11 is controlled to retract, and the top end of the electric push rod 11 drives the sliding adjustment plate 13 to slide upward, and the upward sliding of the sliding adjustment plate 13 drives the second fixed column 19 to move upward, and the movement of the second fixed column 19 pulls one end of the connecting rod 18 to move upward, and because the other end of the connecting rod 18 is rotatably connected to the first fixed column 17, the movement of the connecting rod 18 pulls the first fixed column 17 to move upward, and the movement of the first fixed column 17 drives the linkage wheel 16 to rotate, and the rotation of the linkage wheel 16 drives the linkage wheel 16 located at the linkage The first fixed column 17 on the other side of the movable wheel disc 16 moves downward, thereby driving the connecting rod 18 located on the other side of the linkage wheel disc 16 to move downward. The movement of the connecting rod 18 pushes the sliding adjustment plate 13 located below the linkage wheel disc 16 to slide downward. The sliding of the sliding adjustment plate 13 drives the supporting cross bar 14 to move. The movement of the supporting cross bar 14 drives the roller 15 to move, thereby realizing the synchronous reverse movement of the two rollers 15 until the electric push rod 11 retracts to the bottom end. At this time, the cylindrical workpiece 5 is clamped on the side of the lathe spindle 4 close to the roller 15, and then the electric push rod 11 is controlled to extend. The top end of the electric push rod 11 pushes the sliding adjustment plate 13 to move downward, and the movement of the sliding adjustment plate 13 drives the supporting cross bar 14 to move. The movement of the supporting cross bar 14 drives the roller 15 to move until the outer sides of the rollers 15 located above and below the cylindrical workpiece 5 are close to the outer sides of the cylindrical workpiece 5. At this time, the cylindrical workpiece 5 can be processed.

[0026] 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. A center-rear guide clamping mechanism for a centerless lathe, comprising a lathe device (1) and a center-rear guide clamping device (2), characterized in that: The center-rear guide clamping device (2) is evenly arranged on the lathe device (1), and the lathe device (1) comprises a workbench (3), a lathe spindle (4), a cylindrical workpiece (5), a slide rail (6) and a supporting fixed frame (7), wherein the lathe spindle (4) is fixedly mounted on the top of the workbench (3), the cylindrical workpiece (5) is clamped and connected to one side of the lathe spindle (4), the bottom end of the slide rail (6) is fixedly connected to one side of the top of the workbench (3), and the top end of the supporting fixed frame (7) is fixedly connected to the bottom end of the workbench (3).

2. The center-rear guide clamping mechanism of a centerless lathe according to claim 1, characterized in that: The middle and rear guide clamping device (2) comprises a support frame (8), an inspection cover (9), a fastening bolt (10), an electric push rod (11), a slide rod (12), a sliding adjustment plate (13), a support cross bar (14), a roller (15), a linkage wheel (16), a first fixed column (17), a connecting rod (18) and a second fixed column (19), the inspection cover (9) is symmetrically fixedly installed on both sides of the support frame (8), the fastening bolt (10) is threadedly connected to the bottom end of one side of the support frame (8), the electric push rod (11) is fixedly connected to the middle of the top end of the support frame (8), the slide rod (12) is symmetrically arranged, and the top end of the slide rod (12) is fixedly connected to the inner top end of the support frame (8), and the bottom end of the slide rod (12) is fixedly connected to the inner bottom end of the support frame (8), and the sliding adjustment plate (13) is symmetrically arranged. The sliding adjustment plate (13) is slidingly connected to the sliding rod (12), the supporting cross bar (14) is fixedly connected to one end of the sliding adjustment plate (13) away from the fastening bolt (10), the roller (15) is rotatably connected to the outer side of the supporting cross bar (14), the linkage wheel (16) is rotatably connected to the inspection cover (9) through a rotating shaft, the first fixing column (17) is symmetrically fixedly connected to one side of the linkage wheel (16) close to the sliding adjustment plate (13), the second fixing column (19) is symmetrically fixedly connected to both sides of one end of the sliding adjustment plate (13) close to the linkage wheel (16), the connecting rod (18) is symmetrically arranged, and one end of the connecting rod (18) is rotatably connected to the first fixing column (17), and the other end of the connecting rod (18) is rotatably connected to the second fixing column (19).

3. The center-rear guide clamping mechanism of a centerless lathe according to claim 2, characterized in that: The bottom end of the support frame (8) is slidably connected to the slide rail (6), and the threaded end of the fastening bolt (10) is in contact with a side of the slide rail (6) away from the cylindrical workpiece (5).

4. The center-rear guide clamping mechanism of a centerless lathe according to claim 3, characterized in that: The top end of the electric push rod (11) is fixedly connected to an end of the sliding adjustment plate (13) close to the electric push rod (11) and away from the linkage wheel (16).

5. The center-rear guide clamping mechanism of a centerless lathe according to claim 4, characterized in that: A hole groove is formed through one side of the support frame (8) close to the roller (15).

6. The center-rear guide clamping mechanism of a centerless lathe according to claim 5, characterized in that: The middle part of the outer side of the roller (15) is designed to be concave arc-shaped.

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