CN216029440U

CN216029440U - Height-adjustable internal force pressing device

Info

Publication number: CN216029440U
Application number: CN202121951882.1U
Authority: CN
Inventors: 王冬雨; 徐焘; 曹烈
Original assignee: Shenyang Aircraft Industry Group Co Ltd
Current assignee: Shenyang Aircraft Industry Group Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-03-15
Anticipated expiration: 2031-08-19

Abstract

The utility model belongs to the technical field of aviation mechanical processing technology equipment, and particularly relates to a height-adjustable internal force pressing device which comprises a guide support, a nut, a guide screw, a compression spring, a guide shaft, a tangential locking sleeve, a tangential locking nail, a locking nut, a positioning T-shaped block, a support nail, a pressing plate, a pressing nail, a T-shaped block nut and a screw; the stress-free pressing device provided by the utility model has strong universality; the pressing and supporting are convenient and reliable; the product is clamped in a free state, and the problem of clamping deformation is solved. The processing quality of the product is improved.

Description

Height-adjustable internal force pressing device

Technical Field

The utility model belongs to the technical field of aviation mechanical processing technological equipment, and particularly relates to a height-adjustable internal force pressing device.

Background

There are several factors that affect the deformation of the product during the machining process, including product clamping, the material and structure of the workpiece itself, cutter back-off during machining, and stress release after machining. The most significant influence is deformation caused during product clamping, and when the rigidity of a processed product is good, clamping deformation can be well controlled by reasonably arranging compression points and supporting points; when the rigidity of the processed product is poor, long and thin parts such as large frames, beams and the like can generate large deformation under the action of clamping force. Therefore, the production mode of various small batches of aviation products requires that matched technological equipment has a device which has strong universality, can realize clamping and no clamping deformation of the products in a free state to replace the conventional pressing plate and the conventional threaded adjusting nail. The present invention has been made in view of the above technical background.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is: the external force compression is converted into the internal force compression, so that stress-free supporting and compressing positions of the product are realized. The problem of machining deformation caused by large compression stress of a product during clamping is solved.

The technical scheme of the utility model is as follows:

a height-adjustable internal force pressing device comprises a guide support 2, a nut 3, a guide screw 4, a compression spring 5, a guide shaft 6, a tangential locking sleeve 7, a tangential locking nail 8, a locking nut 9, a positioning T-shaped block 10, a support nail 11, a pressing plate 12, a pressing nail 13, a T-shaped block nut 14 and a screw 15; wherein, the upper surface of the guide support 2 is provided with a first precision hole along the vertical direction, and the first precision hole is in sliding fit with the guide shaft 6; the guide shaft 6 is a stepped shaft, a guide key groove is formed in the large cylindrical surface of the guide shaft 6, a threaded hole is formed in the side wall of the guide support 2, the guide screw 4 is arranged in the threaded hole, the part, located inside the guide support 2, is matched with the guide key groove, the part, located outside the guide support 2, of the guide screw 4 is provided with the nut 3, and the guide screw 4 is locked through the nut 3; the lower end of the guide shaft 6 is provided with an inner hole which is matched with a first precision hole of the guide support 2 to guide the compression spring 5; the small cylindrical surface of the guide shaft 6 is in transition fit with the positioning T-shaped block 10 and is fixedly connected with the positioning T-shaped block.

The radial directions of the large cylindrical surfaces of the tangential locking sleeve 7 and the tangential locking nail 8 are provided with circular arcs according to the large diameter size of the guide shaft 6; the side wall of the guide support 2 is provided with a second precision hole, the tangential locking sleeve 7 and the tangential locking nail 8 are respectively arranged in the second precision hole from two sides of the guide support 2 and are tangent to the guide shaft 6, and the tangential locking sleeve 7 and the tangential locking nail 8 are locked through the locking nut 9, so that the guide shaft 6 is locked.

The positioning T-shaped block 10 is provided with a T-shaped groove for guiding a compression nail 13, one end of the compression nail 13 is connected with the positioning T-shaped block 10, the other end of the compression nail 13 penetrates through a pressure plate 12, the end part of the end is provided with a T-shaped block nut 14, and the T-shaped block nut 14 is used for applying compression force; the front end of the positioning T-shaped block 10 is provided with a precision surface for supporting and positioning the product, and the precision surface is matched with a jaw on the pressure plate 12 to clamp the product 16. The supporting nail 11 is arranged in a threaded hole at the rear end of the pressing plate 12. The bottom of the guide support 2 is provided with a plurality of screws 15 for connection with the table 1.

The utility model has the advantages that: the stress-free pressing device has strong universality; the pressing and supporting are convenient and reliable; the product is clamped in a free state, and the problem of clamping deformation is solved. The processing quality of the product is improved.

Drawings

Fig. 1 is a side view of a height adjustable internal force compression device provided in an embodiment of the present invention.

Fig. 2 is a top view of a height adjustable internal force compression device provided in an embodiment of the present invention.

Fig. 3A is a cross-sectional view of a height adjustable internal force compression device provided in an embodiment of the present invention.

Fig. 3B is a cross-sectional view taken along a-a of fig. 3A.

In the figure: 1, a workbench; 2, guiding a support; 3, a nut; 4, guiding a screw; 5 compressing the spring; 6, guiding a shaft; 7 tangential locking sleeves; 8, tangential locking nails; 9 locking the nut; 10 positioning the T-shaped block; 11-support nails; 12, pressing a plate; 13 compressing the nail; 14T-shaped block nuts; 15, a screw; 16 products.

Detailed Description

The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.

It is to be understood that the appended drawings are not to scale, but are merely drawn with appropriate simplifications to illustrate various features of the basic principles of the utility model. Specific design features of the utility model disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and use environment.

In the several figures of the drawings, identical or equivalent components (elements) are referenced with the same reference numerals.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

FIG. 1 is a side view of a height adjustable internal force compression device provided in an embodiment of the present invention; FIG. 2 is a top view of a height adjustable internal force compression device provided in an embodiment of the present invention; fig. 3A is a cross-sectional view of a height adjustable internal force compression device provided in an embodiment of the present invention. Fig. 3B is a cross-sectional view taken along a-a of fig. 3A.

Referring to fig. 1 to 3B, in the present embodiment, the height-adjustable internal force pressing device includes a guide support 2, a nut 3, a guide screw 4, a compression spring 5, a guide shaft 6, a tangential locking sleeve 7, a tangential locking pin 8, a locking nut 9, a positioning T-shaped block 10, a support pin 11, a pressing plate 12, a pressing pin 13, a T-shaped block nut 14, and a screw 15; wherein, the upper surface of the guide support 2 is provided with a first precision hole along the vertical direction (Z direction) and forms sliding fit with the guide shaft 6; the guide shaft 6 is a stepped shaft, a guide key groove is formed in the large cylindrical surface of the guide shaft 6, a threaded hole is formed in the side wall of the guide support 2 along the X direction, a guide screw 4 is arranged in the threaded hole and matched with the guide key groove and used for preventing the guide shaft 6 from rotating, a nut 3 is arranged on the part, located outside the guide support 2, of the guide screw 4, and the guide screw 4 is locked through the nut 3; the lower end of the guide shaft 6 is provided with an inner hole which is matched with a first precision hole of the guide support 2 and used for guiding the compression spring 5; the small cylindrical surface of the guide shaft 6 is in transition fit with the positioning T-shaped block 10 and is welded after being pressed in.

The radial directions of the large cylindrical surfaces of the tangential locking sleeve 7 and the tangential locking nail 8 are made into circular arcs according to the large diameter size of the guide shaft 6; the side wall of the guide support 2 is provided with a second precision hole along the Y direction, the tangential locking sleeve 7 and the tangential locking nail 8 are respectively arranged in the second precision hole from the two ends of the guide support 2 along the Y direction and cut into the guide shaft 6, and the guide shaft 6 is locked at any position in the height direction by locking the tangential locking sleeve 7 and the tangential locking nail 8 through the locking nut 9.

A T-shaped groove is formed in the positioning T-shaped block 10 and used for guiding a compression nail 13, one end of the compression nail 13 is connected with the positioning T-shaped block 10, the other end of the compression nail 13 penetrates through the pressure plate 12, a T-shaped block nut 14 is arranged at the end part of the end, and the T-shaped block nut 14 is used for applying pressing force; the front end of the positioning T-shaped block 10 is provided with a precision surface for supporting and positioning the product, and the front end of the positioning T-shaped block is matched with a jaw on the pressing plate 12 to clamp the product 16. The support nail 11 is arranged in a threaded hole at the rear end of the pressure plate 12. Several groups of height-adjustable internal force pressing devices are assembled and then are screwed on the workbench 1 by screws 15.

The application process comprises the following steps: before the product 16 is clamped, the locking nut 9 is loosened, so that the tangential locking sleeve 7 and the tangential locking nail 8 are separated from the cylindrical surface of the guide shaft 6; installing a product 16 on the positioning surface of the positioning T-shaped block 10, and compressing the compression spring 5 by the self weight of the product 16 until the product 16 contacts the fixed positioning surface; the locking nut 9 is screwed down, so that the tangential locking sleeve 7 and the tangential locking nail 8 are cut on the cylindrical surface of the guide shaft 6, and the Z-direction position is fixed; the support nail 11 is adjusted, and the T-shaped block nut 14 is screwed to apply pressing force. Because the clamp structure is composed of the pressing plate 12, the positioning T-shaped block 10 and the pressing nail 13, the acting force and the reacting force act on the product at the same time and are not conducted to the workbench 1, so that the product is clamped in a completely free state, and the problem of clamping deformation is solved.

In conclusion, the unstressed pressing device provided by the utility model is designed to be in sliding fit with two layers of guide sleeves. The first layer eliminates the force at the supporting position through the matching of a jackscrew and tangential compression, so that the support is free of stress; the second layer forms the clamp structure through the cooperation holding surface of conventional clamp plate subassembly structure, and effort, reaction force act on product self simultaneously, do not conduct the workstation, make the product press from both sides tightly under complete free state, have eliminated and have pressed from both sides the problem of tight deformation.

The above description of exemplary embodiments has been presented only to illustrate the technical solution of the utility model and is not intended to be exhaustive or to limit the utility model to the precise form described. Obviously, many modifications and variations are possible in light of the above teaching to those skilled in the art. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to thereby enable others skilled in the art to understand, implement and utilize the utility model in various exemplary embodiments and with various alternatives and modifications. It is intended that the scope of the utility model be defined by the following claims and their equivalents.

Claims

1. The height-adjustable internal force pressing device is characterized by comprising a guide support (2), a nut (3), a guide screw (4), a compression spring (5), a guide shaft (6), a tangential locking sleeve (7), a tangential locking nail (8), a locking nut (9), a positioning T-shaped block (10), a support nail (11), a pressing plate (12), a pressing nail (13), a T-shaped block nut (14) and a screw (15); wherein the content of the first and second substances,

a first precision hole is formed in the upper surface of the guide support (2) along the vertical direction, and the first precision hole is in sliding fit with the guide shaft (6); the guide shaft (6) is a stepped shaft, a guide key groove is formed in the large cylindrical surface of the guide shaft (6), a threaded hole is formed in the side wall of the guide support (2), the guide screw (4) is arranged in the threaded hole, the part, located inside the guide support (2), is matched with the guide key groove, a nut (3) is arranged on the part, located outside the guide support (2), of the guide screw (4), and the guide screw (4) is locked through the nut (3); the lower end of the guide shaft (6) is provided with an inner hole, and a first precision hole matched with the guide support (2) guides the compression spring (5); the small cylindrical surface of the guide shaft (6) is in transition fit with the positioning T-shaped block (10) and is fixedly connected with the positioning T-shaped block;

the radial directions of the large cylindrical surfaces of the tangential locking sleeve (7) and the tangential locking nail (8) are provided with circular arcs according to the large diameter size of the guide shaft (6); a second precision hole is formed in the side wall of the guide support (2), the tangential locking sleeve (7) and the tangential locking nail (8) are respectively arranged in the second precision hole from two sides of the guide support (2) and are tangent to the guide shaft (6), and the tangential locking sleeve (7) and the tangential locking nail (8) are locked through a locking nut (9) to enable the guide shaft (6) to be locked;

the positioning T-shaped block (10) is provided with a T-shaped groove for guiding a compression nail (13), one end of the compression nail (13) is connected with the positioning T-shaped block (10), the other end of the compression nail (13) penetrates through a pressing plate (12), the end part of the end is provided with a T-shaped block nut (14), and the T-shaped block nut (14) is used for applying pressing force; the front end of the positioning T-shaped block (10) is provided with a precision surface for supporting and positioning a product, and the precision surface is matched with a jaw on the pressure plate (12) to clamp the product (16); the supporting nail (11) is arranged in a threaded hole at the rear end of the pressing plate (12); the bottom of the guide support (2) is provided with a plurality of screws (15) for connecting with the workbench (1).