Boring and milling clamp for machining thin-wall welded gear cover by numerical control gantry boring and milling machine

Abstract

The utility model relates to the technical field of gear cover machining auxiliary tools, in particular to a boring and milling clamp used when a numerical control gantry boring and milling machine machines a thin-wall welding gear cover, which comprises a bottom plate, eight fixing plates which are symmetrically distributed are fixedly connected to the upper end face of the bottom plate, and threaded rods are in threaded connection with the interiors of the eight fixing plates. Eight threaded rods are arranged on the bottom plate, sliding blocks are rotatably connected to the ends, close to each other, of the eight threaded rods, L-shaped plates are rotatably connected to the interiors of the eight sliding blocks, eight symmetrically-distributed sliding grooves are formed in the upper end face of the bottom plate, the eight sliding blocks are slidably connected with the eight sliding grooves correspondingly, and through cooperation of the fixing plate, the threaded rods, the sliding blocks, the sliding grooves, the L-shaped plates and springs, the sliding blocks are fixed to the bottom plate. The eight L-shaped plates are arranged in the front, back, left and right directions, the gear cover is fixed in the upper, lower, left, right, front, back and six directions, the gear cover is not prone to sliding in the machining process, and clamping is firmer.

Description

Technical Field

[0001] The utility model relates to the technical field of gear cover machining auxiliary tooling, in particular to a boring and milling fixture for machining thin-walled welded gear covers by a numerically controlled gantry boring and milling machine. Background Art

[0002] The gear cover is a thin-walled box-shaped part that protects the transmission gears. Due to the small space allocated to the gears, it is designed to be a thin plate welded structure. The cover body is split in half, including an upper box body and a lower box body. The upper box body and the lower box body are welded with two side panels and a surrounding plate. The motor shaft and the wheel axle extend into the gear cover through the motor collar, the shaft collar and the labyrinth collar. A pair of gear pairs on the two shafts are wrapped in the cover.

[0003] After the gear cover is assembled, it is necessary to mill the motor collar, shaft collar, labyrinth collar, mounting seat and column. However, the existing gear cover fixture generally clamps the gear cover in the horizontal direction, which makes the gear cover easy to vibrate up and down during the processing, resulting in unqualified processing quality. Utility Model Content

[0004] Aiming at the above problems, the utility model provides a boring and milling fixture for machining thin-walled welded gear covers by a numerically controlled gantry boring and milling machine to solve the above problems.

[0005] The utility model is implemented as follows: a boring and milling fixture for machining thin-walled welded gear covers by a CNC gantry boring and milling machine comprises a base plate, the upper end surface of the base plate is fixedly connected with eight symmetrically distributed fixed plates, the interiors of the eight fixed plates are all threadedly connected with threaded rods, the ends of the eight threaded rods that are close to each other are all rotatably connected with sliders, and the interiors of the eight sliders are all rotatably connected with L-shaped plates.

[0006] In order to facilitate the stable movement of the slider, as a preferred boring and milling fixture for machining thin-walled welded gear covers on a CNC gantry boring and milling machine of the utility model, the upper end surface of the base plate is provided with eight symmetrically distributed sliding grooves, and the eight sliders are respectively slidably connected to the eight sliding grooves.

[0007] In order to facilitate the rotational connection between the L-shaped plate and the slider, as a preferred boring and milling fixture for a CNC gantry boring and milling machine of the utility model when processing a thin-walled welded gear cover, the interiors of the eight sliders are all provided with installation grooves, and the inner walls of the eight installation grooves are fixedly connected with connecting shafts, and the eight L-shaped plates are respectively rotationally connected to the eight sliders through eight connecting shafts.

[0008] In order to facilitate the rebound of the L-shaped plate, as a preferred boring and milling fixture for machining thin-walled welded gear covers on a CNC gantry boring and milling machine of the utility model, springs are installed on the inner walls of the eight mounting grooves, and the other ends of the eight springs are respectively fixedly connected to the eight L-shaped plates.

[0009] In order to prevent the L-shaped plate from clamping the gear cover, as a preferred boring and milling fixture for machining thin-walled welded gear covers on a CNC gantry boring and milling machine of the utility model, the inner walls of the eight L-shaped plates are fixedly connected to two protrusions, and the outer walls of the sixteen protrusions are provided with rubber pads.

[0010] In order to facilitate the rotation of the threaded rod, as a preferred boring and milling fixture for machining a thin-walled welded gear cover by a CNC gantry boring and milling machine of the utility model, the ends away from each other of the eight threaded rods are all provided with handles.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The boring and milling fixture used in this CNC gantry boring and milling machine for processing thin-walled welded gear covers is equipped with eight L-shaped plates in four directions of front, back, left, and right through the cooperation of a fixed plate, a threaded rod, a slider, a slide groove, an L-shaped plate, and a spring, so as to fix the gear cover in six directions of up, down, left, right, front, and back. The gear cover is not easy to slide during the processing and is clamped more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structural diagram of a boring and milling fixture used in machining thin-walled welded gear covers by a CNC gantry boring and milling machine of the utility model;

[0014] Figure 2 It is a top view of a boring and milling fixture used when machining a thin-walled welded gear cover by a CNC gantry boring and milling machine of the utility model;

[0015] Figure 3 It is a right side sectional view of a boring and milling fixture when machining a thin-walled welded gear cover by a CNC gantry boring and milling machine of the utility model;

[0016] Figure 4 For this utility model Figure 3 The enlarged view of point A in the middle;

[0017] Figure 5 It is a structural diagram of the L-shaped plate of the utility model.

[0018] In the figure, 1, bottom plate; 2, fixed plate; 3, slide groove; 4, slider; 5, threaded rod; 6, connecting shaft; 7, L-shaped plate; 8, bump; 9, spring; 10, handle; 11, installation groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0021] See also Figure 1-5 A boring and milling fixture for machining thin-walled welded gear covers by a CNC gantry boring and milling machine comprises a base plate 1, the upper end surface of the base plate 1 is fixedly connected with eight symmetrically distributed fixed plates 2, the interiors of the eight fixed plates 2 are all threadedly connected with threaded rods 5, the adjacent ends of the eight threaded rods 5 are all rotatably connected with sliders 4, and the interiors of the eight sliders 4 are all rotatably connected with L-shaped plates 7.

[0022] In this embodiment: the threaded rod 5 is rotated, and the threaded rod 5 drives the slider 4 to slide along the slide groove 3 toward the center of the base plate 1, and then drives the L-shaped plate 7 to slide toward the center of the base plate 1, and the protrusion 8 on the lower side of the L-shaped plate 7 first contacts the side wall of the gear cover, so that the gear cover is clamped in the horizontal direction. While the lower end of the L-shaped plate 7 is against the side wall of the gear cover, it drives the L-shaped plate 7 to rotate along the connecting shaft 6, and then drives the protrusion 8 on the upper side of the L-shaped plate 7 to press downward on the upper end surface of the gear cover, thereby fixing the gear cover in the vertical direction. Through a total of eight L-shaped plates 7 in four directions of front, back, left and right, the gear cover is fixed in six directions of up, down, left, right, front and back. The gear cover is not easy to slide during the processing and is clamped more firmly.

[0023] As a technical optimization solution of the utility model, eight symmetrically distributed sliding grooves 3 are opened on the upper end surface of the bottom plate 1, and eight sliding blocks 4 are slidably connected to the eight sliding grooves 3 respectively.

[0024] In this embodiment, the slider 4 is slidably connected to the slide groove 3, so that the slider 4 can slide stably.

[0025] As a technical optimization solution of the utility model, the interiors of the eight sliders 4 are all provided with mounting grooves 11, the inner walls of the eight mounting grooves 11 are all fixedly connected with connecting shafts 6, and the eight L-shaped plates 7 are rotatably connected to the eight sliders 4 through the eight connecting shafts 6 respectively.

[0026] In this embodiment, the connecting shaft 6 is fixedly connected to the inner wall of the mounting groove 11, so that the L-shaped plate 7 and the slider 4 can be rotatably connected.

[0027] As a technical optimization solution of the present invention, springs 9 are installed on the inner walls of the eight installation grooves 11 , and the other ends of the eight springs 9 are fixedly connected to the eight L-shaped plates 7 respectively.

[0028] In this embodiment, springs 9 are installed on the inner walls of the installation grooves 11. When the L-shaped plate 7 is loosened, the L-shaped plate 7 rotates upward under the elastic force of the springs 9, thereby loosening the gear cover.

[0029] As a technical optimization solution of the present utility model, the inner walls of the eight L-shaped plates 7 are fixedly connected with two protrusions 8, and the outer walls of the sixteen protrusions 8 are provided with rubber pads.

[0030] In this embodiment, a rubber pad is provided on the outer wall of the projection 8 to prevent the gear cover from being pinched.

[0031] As a technical optimization solution of the present invention, a handle 10 is provided at each of the ends of the eight threaded rods 5 that are away from each other.

[0032] In this embodiment, a handle 10 is provided at one end of the threaded rod 5 to facilitate the rotation of the threaded rod 5 .

[0033] The working principle and use process of the utility model are as follows: when in use, the gear cover is first placed on the base plate 1, and then the threaded rod 5 is rotated by the handle 10. The threaded rod 5 drives the slider 4 to slide along the slide groove 3 toward the center of the base plate 1, and then drives the L-shaped plate 7 to slide toward the center of the base plate 1. The protrusion 8 on the lower side of the L-shaped plate 7 first contacts the side wall of the gear cover, so that the gear cover is clamped in the horizontal direction. While the lower end of the L-shaped plate 7 abuts against the side wall of the gear cover, the L-shaped plate 7 is driven to rotate along the connecting shaft 6, and then drives the protrusion 8 on the upper side of the L-shaped plate 7 to press downward on the upper end surface of the gear cover, thereby fixing the gear cover in the vertical direction. Through a total of eight L-shaped plates 7 in four directions of front, back, left and right, the gear cover is fixed in six directions of up, down, left, right, front and back. The gear cover is not easy to slide during the processing and is clamped more firmly.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boring and milling fixture for machining thin-walled welded gear covers using a CNC gantry boring and milling machine, comprising a base plate (1), characterized in that: The upper end surface of the bottom plate (1) is fixedly connected to eight symmetrically distributed fixing plates (2), the interiors of the eight fixing plates (2) are all threadedly connected to threaded rods (5), the adjacent ends of the eight threaded rods (5) are rotatably connected to sliders (4), and the interiors of the eight sliders (4) are all rotatably connected to L-shaped plates (7).

2. The boring and milling fixture for machining thin-walled welded gear covers by a CNC gantry boring and milling machine according to claim 1, characterized in that: The upper end surface of the bottom plate (1) is provided with eight symmetrically distributed sliding grooves (3), and the eight sliding blocks (4) are respectively slidably connected to the eight sliding grooves (3).

3. The boring and milling fixture for machining thin-walled welded gear covers by a CNC gantry boring and milling machine according to claim 1, characterized in that: The eight sliding blocks (4) are each provided with a mounting groove (11), the inner walls of the eight mounting grooves (11) are each fixedly connected with a connecting shaft (6), and the eight L-shaped plates (7) are rotatably connected to the eight sliding blocks (4) via the eight connecting shafts (6).

4. The boring and milling fixture for machining thin-walled welded gear covers by a CNC gantry boring and milling machine according to claim 3, characterized in that: The inner walls of the eight installation grooves (11) are all provided with springs (9), and the other ends of the eight springs (9) are respectively fixedly connected to the eight L-shaped plates (7).

5. The boring and milling fixture for machining thin-walled welded gear covers by a CNC gantry boring and milling machine according to claim 1, characterized in that: The inner walls of the eight L-shaped plates (7) are each fixedly connected to two protrusions (8), and the outer walls of the sixteen protrusions (8) are each provided with a rubber pad.

6. The boring and milling fixture for machining thin-walled welded gear covers by a CNC gantry boring and milling machine according to claim 1, characterized in that: A handle (10) is provided at each of the eight threaded rods (5) at ends away from each other.

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