CN221065410U - An automatic locking and positioning device for numerically controlled machining of navigation receiver chassis wall panels - Google Patents

Abstract

The utility model provides an automatic locking and positioning device for numerical control machining of a chassis wall plate of a navigation receiver, which comprises a bottom plate, and a left wall plate clamp mechanism and a right wall plate clamp mechanism which are respectively arranged at the left end and the right end of the bottom plate. The four corners of the top of the left wallboard clamp mechanism are respectively provided with a support, the outer sides of the two supports at the left end are respectively provided with a fixed block, the outer sides of the two supports at the right end are respectively provided with a clamping module, and each clamping module is connected with a clamping cylinder; the top of right wallboard anchor clamps mechanism is provided with first reference column and second reference column, and the four corners position in its first reference column and second reference column outside is provided with briquetting module respectively, and each briquetting module is connected and is compressed tightly the cylinder. The utility model has simple structure, reliable performance and convenient operation, can improve the processing quality and efficiency of the left/right wall plates of the chassis of the navigation receiver, can be widely popularized and applied to processing enterprises of various plate products, and can also have the function of robot automated production.

Description

An automatic locking and positioning device for numerically controlled machining of navigation receiver chassis wall panels

Technical Field

The utility model relates to a navigation receiver chassis numerical control processing auxiliary equipment, in particular to a navigation receiver chassis wall plate numerical control processing automatic locking and positioning device.

Background technique

The left/right wall panels are mostly used as a structural part on the chassis of aerospace product navigation receivers. The product is a square aluminum alloy structure with very high precision requirements and is easily deformed during processing. The existing product processing is done by manually tightening the screws with precision flat-nose pliers and simple clamps, and processed by CNC machine tools. Due to different processing experience of different operators, inconsistent clamping force, and insufficient work, the product processing has different degrees of deformation, reverse installation, and skewed installation. Human factors in the production of left/right wall panels are inevitable, resulting in a product qualification rate of less than 80%. Due to the large production volume of this product, the cost of raw materials is high, and the production efficiency of manual loading and unloading is very low.

Utility Model Content

The utility model aims to provide an automatic locking and positioning device for numerically controlling the wall panels of a navigation receiver chassis, which has the advantages of simple structure, reliable performance, convenient operation and improved processing quality and efficiency, in view of the defects of the prior art.

The utility model adopts the following technical solutions to solve the above technical problems:

The utility model provides a navigation receiver chassis wall panel numerical control machining automatic locking and positioning device, comprising a bottom plate and a left wall plate clamp mechanism and a right wall plate clamp mechanism respectively installed at the left and right ends of the bottom plate, wherein:

The four corners of the top of the left wall plate clamp mechanism are respectively provided with supports, the outer sides of the two supports at the left end are respectively provided with fixing blocks, and the outer sides of the two supports at the right end are respectively provided with clamping modules, and each clamping module is connected to a clamping cylinder;

The top of the right wall plate clamp mechanism is provided with a first positioning column and a second positioning column, and four corners outside the first positioning column and the second positioning column are respectively provided with pressure block modules, and each of the pressure block modules is connected to a clamping cylinder.

Preferably, the right side wall of the bottom plate is provided with a first quick-connect connector assembly, and the top is provided with a second quick-connect connector assembly and a third quick-connect connector assembly, wherein:

The second quick-connect fitting assembly is arranged close to the left wall plate clamp mechanism, one end of which is connected to the first quick-connect fitting assembly, and the other end of which is respectively connected to the two clamping cylinders through air pipes;

The third quick-connect connector assembly is arranged close to the right wall panel clamp mechanism, one end of which is connected to the first quick-connect connector assembly, and the other end of which is connected to the four clamping cylinders through air pipes.

Preferably, the left wall panel clamp mechanism comprises a support foot, an upper wall support plate, a support, a fixing block, a clamping module and a clamping cylinder, wherein:

The two ends of the upper wall support plate are respectively arranged at the left end position of the top of the bottom plate through supporting feet, and a second quick-connect connector assembly is installed on the bottom plate;

The supports are in the shape of a convex letter, and there are four of them, which are symmetrically arranged at the four corners of the top of the upper wall support plate;

There are two fixing blocks, which are respectively fixedly mounted on the top of the left end of the bottom plate and are correspondingly located at the outer sides of the two supports on the left side;

There are two clamping modules, which can be slidably installed on the top of the right end of the bottom plate and are correspondingly located at the outer sides of the two supports on the right side;

There are two clamping cylinders, which are respectively vertically mounted on the bottom plate and located below the upper wall support plate, and the output shafts at the upper ends thereof are connected to the clamping module.

Preferably, the clamping module comprises a limit block, an 8-shaped stretching block and a first wedge-shaped expansion block, wherein:

The limit block is fixedly mounted at the mounting hole of the bottom plate, and a sliding hole is provided in the middle thereof;

The lower end of the 8-shaped stretching block is movably embedded in the sliding hole and connected to the telescopic rod at the top end of the clamping cylinder;

The first wedge-shaped expansion block is arranged on the top of the limiting block, and the wedge-shaped section at the inner end is embedded in the left wedge-shaped groove of the 8-shaped stretching block, and the plane section at the outer end is arranged toward the corresponding support.

Preferably, the clamping module further comprises a second wedge-shaped expansion block, a limit baffle and a buffer pad, wherein:

The wedge-shaped section at the inner end of the second wedge-shaped expansion block is embedded in the right wedge-shaped groove of the 8-shaped stretching block, and the plane section at the outer end is arranged toward the limit baffle;

The limit baffle is fixedly mounted on the upper wall support plate, and the buffer pad is fixedly mounted on the plane section of the outer end of the first wedge-shaped expansion block.

Preferably, the left wall plate clamp mechanism further includes two side limit plates, wherein:

The two side limit plates are respectively fixedly installed on the front and rear side walls of the bottom plate in a front-to-back symmetrical manner, and are arranged close to the two supports on the left side.

More preferably, the horizontal heights of the fixing block, the clamping module and the side limit plate are greater than the horizontal height of the support, and are respectively located outside the four supports, forming a wall panel accommodating space together with the upper wall support plate with a protrusion on the bottom.

Preferably, the right wall plate clamp mechanism comprises a support base, a lower wall support plate, a first positioning column, a second positioning column, a pressing block module and a pressing cylinder, wherein:

The lower wall support plate is installed at the right end of the bottom plate through the support base, and the first positioning column and the second positioning column are respectively provided at the left and right ends thereof;

The pressing block modules and the pressing cylinders are four groups, which are arranged at four corners on the bottom plates on the left and right sides of the lower wall support plate, and the lower end of the pressing cylinder is hingedly connected to the telescopic rod at the top of the pressing cylinder.

Preferably, the pressing block module comprises a pressing block body, a hinge plate and a hinge fixing block, wherein:

The top of the pressing block body is provided with a lower pressing block extending laterally inward, and the outer end surface is vertically provided with a groove extending to the top and the bottom, and the lower end of the groove is hingedly connected to the telescopic rod at the top of the pressing cylinder;

There are two hinge plates, the upper ends of which are hingedly connected to the two side walls of the lower inner end of the pressing block body, and the lower ends are hingedly connected to the two side walls of the top of the fixing block, and the fixing block is fixedly installed on the top of the clamping cylinder.

More preferably, the four groups of the pressing block modules connected to the clamping cylinders are symmetrically installed in pairs on the left and right sides of the support base, and the four groups of the clamping cylinders are connected to the second quick-connect connector assembly arranged nearby through air pipes.

The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

The utility model provides an automatic locking and positioning device for CNC machining of wall panels of a navigation receiver case. By installing a left wall panel clamp mechanism and a right wall panel clamp mechanism on a bottom plate, the left wall panel clamp mechanism is used to clamp and fix the wall panel of the navigation receiver case, so as to enable CNC equipment to perform CNC machining on the left side wall of the wall panel; and the right wall panel clamp mechanism is used to press and fix the wall panel of the navigation receiver case, so as to enable CNC equipment to perform CNC machining on the right side wall of the wall panel. The automatic locking and positioning device has a simple structure, reliable performance, and convenient operation, can improve the machining quality and efficiency of the left/right wall panels of the navigation receiver case, can be widely promoted and applied to various plate product processing enterprises, and can also be used for robot automated production.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of a navigation receiver chassis wall panel CNC machining automatic locking and positioning device of the utility model;

FIG2 is a partial enlarged structural schematic diagram of part A of a navigation receiver chassis wall panel CNC machining automatic locking and positioning device shown in FIG1 of the present utility model;

FIG3 is a partial enlarged structural schematic diagram of part B of a navigation receiver chassis wall panel CNC machining automatic locking and positioning device shown in FIG1 of the present utility model;

FIG4 is a schematic diagram of the main structure of a navigation receiver chassis wall panel CNC machining automatic locking and positioning device of the utility model;

FIG5 is a top view of the structure of a navigation receiver chassis wall panel CNC machining automatic locking and positioning device of the utility model

FIG6 is a schematic structural diagram of an automatic locking and positioning device for numerically controlling a navigation receiver chassis wall panel of the present invention, which clamps a chassis wall panel to be processed.

Detailed ways

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

In some embodiments, as shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 6, in order to overcome the problems of inconsistent clamping force of the existing navigation receiver chassis wall panel, easy deformation, reverse installation and skew installation, and low manual clamping efficiency, a navigation receiver chassis wall panel CNC machining automatic locking and positioning device is provided. The machining automatic locking and positioning device mainly includes a base plate 100 and a left wall plate clamp mechanism 200 and a right wall plate clamp mechanism 300 respectively installed at the left and right ends of the base plate 100, and the left wall plate clamp mechanism 200 and the right wall plate clamp mechanism 300 are respectively used to clamp and fix the front and back sides of the navigation receiver chassis wall panel 400.

Specifically, as shown in FIG. 1 and FIG. 2 , the left wall panel clamp mechanism 200 is used to fix and clamp the navigation receiver chassis wall panel 400 so that its front side faces upward, and the front side of the chassis wall panel 400 is processed by a numerical control device. The clamping and fixing principle adopted by the left wall panel clamp mechanism 200 is as follows: supports 230 are respectively arranged at the top four corners of the left wall panel clamp mechanism 200, and there are four supports 230 in total. The outer sides of the two supports 230 at the left end are respectively provided with fixing blocks 240, and the left side of the chassis wall panel 400 is limited by the fixing blocks 240; at the same time, the outer sides of the two supports 230 at the right end are respectively provided with clamping modules 250, and each clamping module 250 is connected to a clamping cylinder 260. When in use, the clamping module 250 can be driven by the clamping cylinder 260 to move left and right to clamp or loosen the chassis wall panel 400 on the left support 230.

In addition, as shown in FIG. 1 and FIG. 3 , the right wall panel clamp mechanism 300 is used to fix and clamp the navigation receiver chassis wall panel 400 so that its back side faces upward, and a numerical control device is used to process the back side of the chassis wall panel 400. The clamping and fixing principle adopted by the right wall panel clamp mechanism 300 is as follows: a first positioning column 330 and a second positioning column 340 are arranged at the top of the right wall panel clamp mechanism 300, and the chassis wall panel 400 is positioned by the first positioning column 330 and the second positioning column 340 so that it is precisely in the processing position; and a pressing block module 350 is respectively arranged at the four corners outside the first positioning column 330 and the second positioning column 340, and each of the pressing block modules 350 is connected to a pressing cylinder 360. When in use, the pressing block module 350 can move up and down under the drive of the pressing cylinder 360, so as to move down to press the side of the chassis wall panel 400, or move up to loosen the chassis wall panel 400.

In some embodiments, as shown in FIG. 1 , FIG. 3 and FIG. 5 , the left wall plate clamp mechanism 200 and the right wall plate clamp mechanism 300 are both driven by air pressure. To this end, a first quick-plug connector assembly 101 is provided on the right side wall of the bottom plate 100, and a second quick-plug connector assembly 102 and a third quick-plug connector assembly 103 are provided on the top. The first quick-plug connector assembly 101 serves as a main air pressure connector, and the second quick-plug connector assembly 102 and the third quick-plug connector assembly 103 serve as air pressure taps, respectively.

Specifically, the second quick-connect fitting assembly 102 is arranged close to the left wall panel clamp mechanism 200, one end of which is connected to the first quick-connect fitting assembly 101, and the other end is connected to the two clamping cylinders 260 through air pipes, and the second quick-connect fitting assembly 102 and the corresponding air pipes provide driving pressure to each clamping cylinder 260. Similarly, the third quick-connect fitting assembly 103 is arranged close to the right wall panel clamp mechanism 300, one end of which is connected to the first quick-connect fitting assembly 101, and the other end is connected to the four pressing cylinders 360 through air pipes, and the third quick-connect fitting assembly 103 and the corresponding air pipes provide driving pressure to each pressing cylinder 360.

In some of the embodiments, as shown in Figures 1, 2, 4 and 5, the left wall panel clamp mechanism 200 mainly includes a supporting foot 210, an upper wall support plate 220, a support 230, a fixing block 240, a clamping module 250 and a clamping cylinder 260.

The support foot 210 is a vertical plate-like structure, and there are two of them, which are installed at the left end of the bottom plate 100 at intervals. The tops of the two support feet 210 are connected to the upper wall support plate 220, which serves the purpose of supporting the upper wall support plate 220. According to needs, the upper surface of the upper wall support plate 220 is designed to be a four-sided cone structure protruding upward, which is similar to the back groove of the chassis wall plate 400, and starts the function of positioning and supporting the chassis wall plate 400. In order to facilitate the provision of driving pressure to the clamping cylinder 260, the second quick-connect connector assembly 102 is installed on the bottom of the support foot 210 on the bottom plate 100, so that it is arranged close to the clamping cylinder 260.

In order to ensure the fastening and fixation of the chassis wall panel 400, the support 230 is designed as a convex structure, and there are four of them in total, which are respectively installed in a symmetrical array at the top four corners of the upper wall support plate 220 to support the four corners of the chassis wall panel 400. There are two fixing blocks 240, which are respectively fixedly installed at the top of the left end of the bottom plate 100 and are correspondingly located at the outer positions of the two left supports 230, which play the role of limiting the chassis wall panel 400, so as to cooperate with the clamping module 250 on the right to clamp the clamping module 250 in the middle position.

In addition, corresponding to the two fixing blocks 240 on the left end, in order to ensure the consistency of the clamping force at the left and right ends of the chassis wall panel 400, and to avoid the defects of different degrees of deformation in product processing due to inconsistent clamping force on both sides, the clamping modules 250 are also provided in two, and the clamping modules 250 can be slidably installed on the top of the right end of the bottom plate 100, and are correspondingly located at the outer positions of the two right supports 230, so as to clamp the inner chassis wall panel 400 during the left and right sliding process.

In order to realize the left and right movement of the two clamping modules 250, a clamping cylinder 260 is respectively provided for each clamping module 250. The two clamping cylinders 260 are respectively vertically mounted on the base plate 100 and hidden at the bottom of the upper wall support plate 220, and the output shafts at the upper ends thereof are connected to the clamping modules 250. By starting the telescopic rod of the clamping cylinder 260 to perform longitudinal extension and retraction, the clamping module 250 can be synchronously driven to expand to one side, thereby achieving the clamping of the chassis wall plate 400.

In some embodiments, as shown in FIG. 1 and FIG. 2 , in order to realize the expansion and clamping of the clamping module 250, the clamping module 250 adopts a specific structural design. The clamping module 250 mainly includes a limit block 251, an 8-shaped stretching block 252 and a first wedge-shaped expansion block 253. The limit block 251 is fixedly installed at the installation hole of the bottom plate 100, and a sliding hole is opened in the middle thereof.

The lower end of the 8-shaped stretching block 252 is movably embedded in the sliding hole and connected to the telescopic rod at the top of the clamping cylinder 260, so that the 8-shaped stretching block 252 can move up and down through the clamping cylinder 260. The first wedge-shaped expansion block 253 is arranged at the top of the limit block 251, and the wedge-shaped section at the inner end is embedded in the left wedge-shaped groove of the 8-shaped stretching block 252, and the flat section at the outer end is arranged toward the corresponding support 230. In the process of moving up and down, the 8-shaped stretching block 252 abuts against the first wedge-shaped expansion block 253 matched with the inclined surface, and under the limit of the bottom limit block 251, the first wedge-shaped expansion block 253 expands outward, thereby realizing the lateral movement of the first wedge-shaped expansion block 253 to clamp the chassis wall panel 400 placed on the inner support 230.

In addition, as shown in FIG. 1 and FIG. 2 , in order to ensure the stability of the expansion of the clamping module 250, the clamping module 250 further includes a second wedge-shaped expansion block 254, a limit baffle 255 and a buffer pad 256. The wedge-shaped section at the inner end of the second wedge-shaped expansion block 254 is embedded in the right wedge-shaped groove of the 8-shaped stretching block 252, and the plane section at the outer end is arranged toward the limit baffle 255, and the limit baffle 255 is fixedly installed on the upper wall support plate 220; the second wedge-shaped expansion block 254 and the first wedge-shaped expansion block 253 are respectively embedded on the left and right sides of the 8-shaped stretching block 252, so that the two sides of the 8-shaped stretching block 252 are evenly stressed.

In order to prevent the chassis wall panel 400 from being deformed due to excessive clamping force of the first wedge-shaped expansion block 253, the buffer pad 256 is installed on the plane section of the outer end of the first wedge-shaped expansion block 253. The buffer pad 256 is made of rubber or silicone. The buffer pad 256 is fitted with the left end surface of the chassis wall panel 400 to increase the contact area between the first wedge-shaped expansion block 253 and the chassis wall panel 400, thereby ensuring the uniformity of the clamping force.

In addition, as shown in Figures 1, 4 and 5, in order to limit the front and rear positions of the chassis wall panel 400 and prevent the chassis wall panel 400 from shifting during processing, the left wall panel clamp mechanism 200 also includes two side limit plates 270, and the two side limit plates 270 are respectively fixedly installed on the front and rear side walls of the base plate 100 in a front-to-back symmetrical manner, and are arranged close to the two supports 230 on the left side.

It is worth noting that, in order to meet the clamping and positioning of the chassis wall panel 400, the horizontal height of the fixing block 240, the clamping module 250 and the side limit plate 270 are set to be greater than the horizontal height of the support 230, and are respectively located outside the four supports 230, so as to limit and clamp the inner chassis wall panel 400 from all sides. At the same time, the fixing block 240, the clamping module 250 and the side limit plate 270 at the four sides are matched with the upper wall support plate 220 with a protrusion at the bottom to enclose a receiving space for positioning and installing the chassis wall panel 400.

In some embodiments, as shown in FIG. 1 and FIG. 3 , the right wall plate clamp mechanism 300 mainly includes a support base 310, a lower wall support plate 320, a first positioning column 330, a second positioning column 340, a pressing block module 350 and a pressing cylinder 360. The pressing block module 350 and the pressing cylinder 360 are four groups, which are installed at four corners on the bottom plate 100. The four groups of the pressing block modules 350 are connected to the pressing cylinders 360 and are symmetrically installed on the left and right sides of the support base 310 in pairs, and the four groups of the pressing cylinders 360 are connected to the second quick-connect connector assembly 102 arranged nearby through air pipes.

Among them, the lower wall support plate 320 is installed on the right end of the base plate 100 through the support base 310, and the first positioning column 330 and the second positioning column 340 are respectively provided at its left and right ends. The first positioning column 330 and the second positioning column 340 cooperate with the grooves on the chassis wall panel 400 to play a role in positioning the chassis wall panel 400.

The briquetting modules 350 and the pressing cylinders 360 are four groups, which are arranged at four corners on the bottom plate 100 on the left and right sides of the lower wall support plate 320, and the lower ends of the pressing cylinders 360 are hingedly connected to the telescopic rods at the tops of the pressing cylinders 360. When in use, the pressing cylinders 360 are started synchronously to control each briquetting module 350 to synchronously move downward to press the chassis wall plate 400 on the lower wall support plate 320, or to drive the briquetting modules 350 to move upward to move the briquetting modules 350 away from the chassis wall plate 400 and release the chassis wall plate 400.

As shown in Figures 1 and 3, the block module 350 adopts a lever structure design, which mainly includes a block body 351, a hinge plate 354 and a hinge fixing block 355. The top of the block body 351 is provided with a lower block 352 extending laterally inward, and the outer end surface is vertically provided with a groove 353 extending to the top and the bottom, and the lower end of the groove 353 is hingedly connected to the telescopic rod at the top of the clamping cylinder 360.

In order to achieve the purpose of lever-type up and down movement of the two ends of the pressing block module 350, there are two hinge plates 354, the upper ends of which are hingedly connected to the two side walls of the lower inner end of the pressing block body 351, and the lower ends are hingedly connected to the two side walls of the top of the fixing block 355, and the fixing block 355 is fixedly installed on the top of the pressing cylinder 360. The hinge plate 354 plays a lever support role, with the telescopic rod of the pressing cylinder 360 as the driving end. In the process of driving the lower end of the pressing block body 351 to move upward or downward, the hinge plate 354 is used as the intermediate support point to synchronously drive the lower pressing block 352 at the upper end of the pressing block body 351 to press the chassis wall panel 400 downward, or to release the chassis wall panel 400 upward.

As shown in FIG1 , the automatic locking and positioning device for numerical control machining of the navigation receiver chassis wall panel has the following working principle when in use: when in use, the cycle start button of the numerical control device is pressed, and the numerical control device can automatically process. When the numerical control device recognizes the instruction M111, the clamping cylinder 260 on the left wall panel clamp mechanism 200 pulls down the clamping module 250 to expand outward, realizes the extrusion and locking of the product shape, and the clamping chassis wall panel 400 is in the first processing state as shown in FIG6 ; when the numerical control device recognizes the instruction M113, the clamping module 250 on the left wall panel clamp mechanism 200 is automatically released; the product placed on the right wall panel clamp mechanism 300 is accurately positioned by the first positioning column 330 and the second positioning column 340, and when the numerical control device system recognizes the instruction M112, the pressing cylinder 360 drives the pressing block module 350 to press the product, and the clamping chassis wall panel 400 is in the second processing state as shown in FIG6 ; when the numerical control device recognizes the instruction M114, the clamping module 250 is automatically released.

During use, the clamping force of the left wall panel clamp mechanism 200 and the right wall panel clamp mechanism 300 is monitored by the electronic air pressure valve in the numerical control device (fixed value range 0.5-0.55 MPa). When the air pressure is lower than the fixed value range, the device alarms and stops working. After the air pressure stabilizes, the numerical control device automatically locks and completes the processing of the product. The automatic locking and positioning device can control the positioning accuracy of the chassis wall panel 400 product to be processed within 0.01 mm, and the product qualification rate reaches 99%, which can effectively ensure the processing quality of the left/right wall panels. It reduces the labor intensity of the operator and can realize one person multi-machine, thereby improving production efficiency.

Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

Secondly, the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An automatic locking and positioning device for numerically controlled machining of a navigation receiver chassis wall panel, characterized in that it comprises a bottom plate and a left wall panel clamp mechanism and a right wall panel clamp mechanism respectively mounted on the left and right ends of the bottom plate, wherein: Supports are respectively arranged at the four corners of the top of the left wall plate clamp mechanism, and fixing blocks are respectively arranged on the outer sides of the two supports at the left end, and clamping modules are respectively arranged on the outer sides of the two supports at the right end, and each clamping module is connected to a clamping cylinder; The top of the right wall plate clamp mechanism is provided with a first positioning column and a second positioning column, and four corners outside the first positioning column and the second positioning column are respectively provided with pressure block modules, and each of the pressure block modules is connected to a clamping cylinder. 2. The automatic locking and positioning device for numerically controlled machining of a navigation receiver chassis wall panel according to claim 1 is characterized in that a first quick-connect connector assembly is provided on the right side wall of the bottom plate, and a second quick-connect connector assembly and a third quick-connect connector assembly are provided on the top, wherein: The second quick-connect fitting assembly is arranged close to the left wall plate clamp mechanism, one end of which is connected to the first quick-connect fitting assembly, and the other end of which is respectively connected to the two clamping cylinders through air pipes; The third quick-connect connector assembly is arranged close to the right wall panel clamp mechanism, one end of which is connected to the first quick-connect connector assembly, and the other end of which is connected to the four clamping cylinders through air pipes. 3. The automatic locking and positioning device for numerically controlled machining of wall panels of a navigation receiver chassis according to claim 1 is characterized in that the left wall panel fixture mechanism comprises a support foot, an upper wall support plate, a support, a fixing block, a clamping module and a clamping cylinder, wherein: The two ends of the upper wall support plate are respectively arranged at the left end position of the top of the bottom plate through supporting feet, and a second quick-connect connector assembly is installed on the bottom plate; The supports are in the shape of a convex letter, and there are four of them, which are symmetrically arranged at the four corners of the top of the upper wall support plate; There are two fixing blocks, which are respectively fixedly mounted on the top of the left end of the bottom plate and are correspondingly located at the outer sides of the two supports on the left side; There are two clamping modules, which can be slidably installed on the top of the right end of the bottom plate and are correspondingly located at the outer sides of the two supports on the right side; There are two clamping cylinders, which are respectively vertically mounted on the bottom plate and located below the upper wall support plate, and the output shafts at the upper ends thereof are connected to the clamping module. 4. The automatic locking and positioning device for numerically controlled machining of a navigation receiver chassis wall panel according to claim 3 is characterized in that the clamping module comprises a limit block, an 8-shaped stretching block and a first wedge-shaped expansion block, wherein: The limit block is fixedly mounted at the mounting hole of the bottom plate, and a sliding hole is provided in the middle thereof; The lower end of the 8-shaped stretching block is movably embedded in the sliding hole and connected to the telescopic rod at the top end of the clamping cylinder; The first wedge-shaped expansion block is arranged on the top of the limiting block, and the wedge-shaped section at the inner end is embedded in the left wedge-shaped groove of the 8-shaped stretching block, and the plane section at the outer end is arranged toward the corresponding support. 5. The automatic locking and positioning device for numerically controlled machining of a navigation receiver chassis wall panel according to claim 4, characterized in that the clamping module further comprises a second wedge-shaped expansion block, a limit baffle and a buffer pad, wherein: The wedge-shaped section at the inner end of the second wedge-shaped expansion block is embedded in the right wedge-shaped groove of the 8-shaped stretching block, and the plane section at the outer end is arranged toward the limit baffle; The limit baffle is fixedly mounted on the upper wall support plate, and the buffer pad is fixedly mounted on the plane section of the outer end of the first wedge-shaped expansion block. 6. The automatic locking and positioning device for numerically controlling the wall panel of a navigation receiver chassis according to claim 3, characterized in that the left wall panel fixture mechanism further comprises two side limit plates, wherein: The two side limit plates are respectively fixedly installed on the front and rear side walls of the bottom plate in a front-to-back symmetrical manner, and are arranged close to the two supports on the left side. 7. According to claim 3, the automatic locking and positioning device for CNC machining of the navigation receiver chassis wall panel is characterized in that the horizontal heights of the fixed block, the clamping module and the side limit plate are greater than the horizontal height of the support, and are respectively located on the outside of the four supports, forming a wall panel accommodating space together with the upper wall support plate with a protrusion on the bottom. 8. The automatic locking and positioning device for numerically controlled machining of wall panels of a navigation receiver chassis according to claim 1 is characterized in that the right wall panel fixture mechanism comprises a support base, a lower wall support plate, a first positioning column, a second positioning column, a pressing block module and a pressing cylinder, wherein: The lower wall support plate is installed at the right end of the bottom plate through the support base, and the first positioning column and the second positioning column are respectively provided at the left and right ends thereof; The pressing block modules and the pressing cylinders are four groups, which are arranged at four corners on the bottom plates on the left and right sides of the lower wall support plate, and the lower end of the pressing cylinder is hingedly connected to the telescopic rod at the top of the pressing cylinder. 9. The automatic locking and positioning device for numerically controlled machining of a navigation receiver chassis wall panel according to claim 8, characterized in that the pressing block module comprises a pressing block body, a hinge plate and a hinge fixing block, wherein: The top of the pressing block body is provided with a lower pressing block extending laterally inward, and the outer end surface is vertically provided with a groove extending to the top and the bottom, and the lower end of the groove is hingedly connected to the telescopic rod at the top of the pressing cylinder; There are two hinge plates, the upper ends of which are hingedly connected to the two side walls of the lower inner end of the pressing block body, and the lower ends are hingedly connected to the two side walls of the top of the fixing block, and the fixing block is fixedly installed on the top of the clamping cylinder. 10. The automatic locking and positioning device for CNC machining of navigation receiver chassis wall panels according to claim 8 is characterized in that the four groups of the pressure block modules connected to the clamping cylinders are symmetrically installed in pairs on the left and right sides of the support base, and the four groups of the clamping cylinders are connected to the second quick-connect connector assembly arranged nearby through air pipes.