CN217394320U - An inner hole machining fixture for aircraft thin-walled parts for CNC lathes - Google Patents

Abstract

The utility model discloses an inner hole machining fixture for aircraft thin-walled parts for a numerically controlled lathe, which comprises a mounting shell and a sliding plate. The outer shell and the slide plate are fixedly connected, the inner part of the outer shell is sleeved with a ejector pin, the end of the ejector pin away from the outer shell is fixed with rubber, the end of the outer shell away from the ejector pin is installed with a plug plate, and the inside of the outer shell is installed with elasticity. The utility model relates to the technical field of fixtures. The inner hole machining fixture for aircraft thin-walled parts for numerically controlled lathes is used in conjunction with a casing, an ejector pin, a rubber plate, a plug plate, an elastic piece, etc. The outer casing drives the ejector pin to move, and the ejector pin Drive the rubber plate to move, the two rubber plates clamp the workpiece, the rubber plate reverses the action of the ejector pin to compress the elastic part in the casing, and the plasticity of the rubber plate and the deformation of the elastic part prevent damage to the parts during the clamping process .

Description

An inner hole machining fixture for aircraft thin-walled parts for CNC lathes

technical field

The utility model relates to the technical field of fixtures, in particular to an inner hole machining fixture for aircraft thin-walled parts for numerically controlled lathes.

Background technique

Fixture refers to the device used to fix the processing object in the process of mechanical manufacturing, so that it occupies the correct position to accept construction or inspection, also known as fixture, in a broad sense, any process in the process is used to quickly, A device that can easily and safely install a workpiece can be called a fixture. When using a CNC lathe to process the inner hole of an aircraft part, a special fixture needs to be used.

However, in the existing machining fixture for the inner hole of aircraft thin-walled parts for CNC lathes, when the parts are clamped, the clamping force is too large, and the parts are easily damaged. If the clamping force is too small, the parts cannot be clamped. The middle parts are easy to fall off.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides an inner hole machining fixture for aircraft thin-walled parts for CNC lathes, which solves the problem of the existing inner hole machining fixture for aircraft thin-walled parts for CNC lathes. When clamping, if the clamping force is too large, it is easy to cause the parts to be dented and damaged. If the clamping force is too small, the parts cannot be clamped tightly, and the parts are easy to fall off during processing.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an inner hole machining fixture for aircraft thin-walled parts for CNC lathes, comprising an installation shell and a sliding plate, wherein a sliding plate is sleeved inside the installation shell, and the sliding plate is Fixing components are installed on the outer wall;

The fixing assembly includes a housing, a ejector pin, a rubber plate, a plug plate and an elastic member;

The casing and the slide plate are fixedly connected, a top pin is sleeved inside the casing, a rubber plate is fixedly connected to the end of the top pin away from the casing, and a plug plate is installed on the end of the casing away from the top pin. An elastic piece is installed inside, one end of the elastic piece fits with the ejector pin, and the other end of the elastic piece fits with the plug plate.

Preferably, a fixing plate is fixedly connected to the outer wall of the installation shell, and a connecting rod is fixedly connected to the outer wall of the fixing plate.

Preferably, a transmission assembly is installed inside the installation shell;

The transmission assembly includes a double-ended threaded rod, a bearing and a rotary knob;

A double-ended threaded rod is installed inside the mounting shell, the outer wall of the double-ended threaded rod is rotatably connected to the mounting shell through a bearing, the double-ended threaded rod is threadedly connected to the slide plate, and both ends of the double-ended threaded rod are threaded. There is a fixed turn button.

Preferably, the outer wall of the rotary knob is processed with grinding lines.

Preferably, a protective component is installed on the outer wall of the fixed plate;

The protection assembly includes a positioning pin, a slot plate, a nut and a guard plate;

The locating pin is fixedly connected with the fixing plate, the outer wall of the locating pin is sleeved with a groove plate, the outer wall of the locating pin is mounted with a nut, and the outer wall of the locating pin penetrates the groove plate and is threadedly connected with the nut. The bottom end is fixed with a guard plate.

Compared with the prior art, the beneficial effect of the present utility model is that the inner hole machining fixture for aircraft thin-walled parts for CNC lathes has the following advantages compared to the traditional technology:

Through the cooperation of the shell, the ejector pin, the rubber plate, the plug plate and the elastic piece, the shell drives the ejector pin to move, the ejector pin drives the rubber plate to move, the two rubber plates clamp the workpiece, and the rubber plate reversely acts on the ejector pin to move the workpiece. The elastic part is compressed in the shell, and the plasticity of the rubber plate and the deformation of the elastic part prevent the damage of the parts during the clamping process;

Through the cooperation of positioning pins, groove plates, nuts and guard plates, when the parts are clamped by two rubber plates, the groove plates are moved on the outer wall of the positioning pins to drive the guard plates to move. The nut on the outer wall of the positioning pin 1 is closely fitted with the groove plate, so as to fix the position of the guard plate. The setting of the two guard plates assists in clamping the parts to prevent the parts from falling off.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the sectional view of the installation shell in Fig. 1;

Fig. 3 is a sectional view of the housing in Fig. 2;

FIG. 4 is a schematic diagram of the connection structure of the groove plate, the positioning pin and the guard plate in FIG. 1 .

In the figure: 1. Mounting shell, 2. Slide plate, 3. Fixing component, 301, Shell, 302, Ejector pin, 303, Rubber plate, 304, Plug plate, 305, Elastic piece, 4. Fixing plate, 5. Connecting rod , 6, transmission components, 601, double-threaded rod, 602, bearings, 603, knob, 7, protective components, 701, positioning pins, 702, groove plate, 703, nut, 704, guard plate.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As can be seen from Figure 1, Figure 2 and Figure 3, an inner hole machining fixture for aircraft thin-walled parts for CNC lathes includes a mounting shell 1 and a slide plate 2, the interior of the mounting shell 1 is sleeved with a slide plate 2, and the outer wall of the slide plate 2 is A fixing assembly 3 is installed. The fixing assembly 3 includes a casing 301, a ejector pin 302, a rubber plate 303, a plug plate 304 and an elastic member 305. The outer casing 301 is fixedly connected to the slide plate 2, and the inner casing 301 is sleeved with an ejector pin 302. The ejector pin A rubber plate 303 is fixedly connected to one end of 302 away from the casing 301, a plug plate 304 is installed at one end of the casing 301 away from the ejector pin 302, an elastic member 305 is installed inside the outer casing 301, and one end of the elastic member 305 is attached to the ejector pin 302, The other end of the elastic piece 305 is attached to the plug plate 304, the outer wall of the mounting shell 1 is fixedly connected with a fixing plate 4, and the outer wall of the fixing plate 4 is fixedly connected with a connecting rod 5;

In the specific implementation process, it is worth noting that the inside of the mounting shell 1 is machined with a cavity, the sliding plate 2 is a cuboid, the outer wall of each sliding plate 2 is installed with a casing 301, the ejector pin 302 can move in the casing 301, the rubber plate 303 has plasticity, the plug plate 304 is connected with the housing 301 through bolts, and the elastic member 305 is a compression spring;

Further, the elastic member 305 can be replaced by other mechanical structures, the fixing plate 4 connects the connecting rod 5 and the mounting shell 1 together, and the connecting rod 5 is installed in the chuck of the CNC machine tool;

Specifically, when the connecting rod 5 is installed in the chuck of the CNC machine tool, when the sliding plate 2 moves toward each other in the installation shell 1, the shell 301 drives the ejector pin 302 to move, the ejector pin 302 drives the rubber plate 303 to move, and the two rubber plates 303 are opposite to each other. When the workpiece is clamped, the rubber plate 303 reversely acts on the ejector pin 302, and the ejector pin 302 compresses the elastic member 305 in the housing 301, and the deformation of the rubber plate 303 and the elastic member 305 prevents the parts from being clamped.

It can be seen from Figures 1 and 2 that a transmission assembly 6 is installed inside the installation shell 1, and the transmission assembly 6 includes a double-ended threaded rod 601, a bearing 602 and a rotary knob 603. The outer wall of the double-ended threaded rod 601 is rotatably connected to the mounting shell 1 through the bearing 602, the double-ended threaded rod 601 is threadedly connected to the slide plate 2, and the two ends of the double-ended threaded rod 601 are fixedly connected with a rotary button 603, and the outer wall of the rotary button 603 is processed with Grinding;

In the specific implementation process, it is worth noting that the rotation of the double-ended threaded rod 601 drives the sliding plate 2 to move, and the outer wall of the rotary knob 603 is processed with grinding lines to increase the friction of the hand. The double-ended threaded rod 601 is installed through the bearing 602. Rotate in shell 1;

Specifically, turn the rotary knob 603 by hand, the rotary knob 603 drives the double-ended threaded rod 601 to move, and the double-ended threaded rod 601 rotates in the installation shell 1 through the bearing 602, and with the rotation of the double-ended threaded rod 601, the sliding plate 2 is driven to move, The sliding plate 2 drives the housing 301 to move, thereby realizing the clamping of the parts.

1 and 4, the outer wall of the fixed plate 4 is provided with a protective assembly 7. The protective assembly 7 includes a positioning pin 701, a groove plate 702, a nut 703 and a protective plate 704. The positioning pin 701 is fixedly connected to the fixed plate 4. The positioning pin A groove plate 702 is sleeved on the outer wall of the 701, a nut 703 is installed on the outer wall of the positioning pin 701, the outer wall of the positioning pin 701 penetrates the groove plate 702 and is threadedly connected with the nut 703, and the bottom end of the groove plate 702 is fixed with a protective plate 704;

In the specific implementation process, it is worth noting that two positioning pins 701 are installed on the outer wall of the fixed plate 4, the outer wall of the positioning pins 701 is threaded, the groove plate 702 is provided with a groove, and the nut 703 connects the groove plate 702 Fixed on the outer wall of the positioning pin 701, the guard plate 704 prevents the parts from shifting;

Specifically, after the part is clamped by the two rubber plates 303, the groove plate 702 is moved on the outer wall of the positioning pin 701, and the groove plate 702 drives the guard plate 704 to move. After the guard plate 704 is attached to the part, the outer wall of the positioning pin 701 is rotated The nut 703 is tightly attached to the groove plate 702, thereby fixing the position of the guard plate 704.

In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", " The orientation or positional relationship indicated by "top", "inside", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

In the present utility model, unless otherwise expressly specified and limited, terms such as "installation", "arrangement", "connection", "fixation", "swivel connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachable connection or integrated; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements Unless otherwise clearly defined, those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. An inner hole machining fixture for aircraft thin-walled parts for a numerically controlled lathe, comprising a mounting shell (1) and a slide plate (2), wherein the interior of the mounting shell (1) is sleeved with a slide plate (2), characterized in that : A fixing assembly (3) is installed on the outer wall of the sliding plate (2); the fixing assembly (3) includes a casing (301), a top pin (302), a rubber plate (303), a plug plate (304) and an elastic member (305); the casing (301) is fixedly connected with the slide plate (2), a top pin (302) is sleeved inside the casing (301), and one end of the top pin (302) away from the casing (301) is fixed. A rubber plate (303) is connected, a plug plate (304) is installed at the end of the casing (301) away from the ejector pin (302), an elastic member (305) is installed inside the casing (301), and the elastic member One end of the (305) is abutted with the ejector pin (302), and the other end of the elastic member (305) is abutted with the plug plate (304). 2. An inner hole machining fixture for aircraft thin-walled parts for CNC lathes according to claim 1, characterized in that a fixing plate (4) is fixedly connected to the outer wall of the mounting shell (1), and the fixing plate (4) is fixed to the outer wall of the mounting shell (1). A connecting rod (5) is fixedly connected to the outer wall of the disc (4). 3 . The inner hole machining fixture for aircraft thin-walled parts for CNC lathes according to claim 1 , wherein: a transmission assembly ( 6 ) is installed inside the installation shell ( 1 ); the transmission assembly (6) Including a double-ended threaded rod (601), a bearing (602) and a knob (603); a double-ended threaded rod (601) is installed inside the mounting shell (1), and the double-ended threaded rod (601) ) is rotatably connected to the mounting shell (1) through a bearing (602), the double-ended threaded rod (601) is threadedly connected to the slide plate (2), and both ends of the double-ended threaded rod (601) are fixedly connected with Knob (603). 4 . The inner hole machining fixture for aircraft thin-walled parts for CNC lathes according to claim 3 , wherein the outer wall of the rotary knob ( 603 ) is machined with grinding lines. 5 . 5 . The inner hole machining fixture for aircraft thin-walled parts for CNC lathes according to claim 2 , wherein: the outer wall of the fixing plate ( 4 ) is provided with a protective component ( 7 ); the protective component (7) Including a positioning pin (701), a groove plate (702), a nut (703) and a guard plate (704); the positioning pin (701) is fixedly connected to the fixing plate (4), and the positioning pin (701) A groove plate (702) is sleeved on the outer wall of the positioning pin (701), a nut (703) is installed on the outer wall of the positioning pin (701), and the outer wall of the positioning pin (701) is threaded through the groove plate (702) and the nut (703), A guard plate (704) is fixedly connected to the bottom end of the groove plate (702).

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