Eccentric quick press-fitting device

Abstract

The utility model relates to the technical field of guide rail press-fitting devices, and particularly discloses an eccentric type rapid press-fitting device which comprises a high-precision platform, a platform base is arranged at the bottom of the high-precision platform, and a plurality of sets of corner pressing air cylinders used for fixing guide rails are installed in the platform base. A mounting through hole is formed in the joint of one group of corner pressing air cylinders and the high-precision platform, a limiting groove is formed in the joint of the other group of corner pressing air cylinders and the high-precision platform, an eccentric pressing needle is arranged at the telescopic end of each corner pressing air cylinder, and one side of each corner pressing air cylinder is connected with an air path assembly; a to-be-tested guide rail is placed on the top of the high-precision platform. The gas circuit assembly comprises a connecting pipe communicating with the corner downward-pressing air cylinder, a gas pipe is arranged at the tail end of the connecting pipe, and a connector is installed on the side, penetrating through the high-precision platform, of the gas pipe. According to the utility model, screw locking installation can be simulated, and the problem of low screw installation efficiency in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of guide rail press-fitting devices, in particular to an eccentric type rapid press-fitting device. Background Art

[0002] The guide rail is the basic part of the linear guide pair. The accuracy of a single guide rail mainly guarantees the accuracy of the linear guide pair in two directions of straightness and height.

[0003] In the batch grinding production process of guide rails, the guide rails are ground in dimensions of 4m - 7m or even longer. After processing, it is necessary to fully detect the straightness and raceway accuracy of the guide rails by 100%. The currently common detection and fixing method in the industry is to lock the guide rails on the high-precision marble inspection tabletop by bolts in a simulated use state.

[0004] However, since the guide rail is in a slender shape, with a small width, only a few millimeters at the thinnest, but the length can reach 7000mm or even longer, and there are nearly a hundred mounting holes on one guide rail. Locking the bolts one by one takes a huge amount of time, and the tightening force of the screws varies from person to person, which easily causes local areas not to be closely attached to the inspection tabletop, thus affecting the detection accuracy.

[0005] Therefore, according to the problems existing in the prior art, an eccentric type rapid press-fitting device is provided. Summary of the Invention

[0006] The purpose of the utility model is to provide an eccentric type rapid press-fitting device, which can simulate screw locking and installation, solve the problem of low efficiency of screw installation in the past, and solve the problems raised in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical solution: An eccentric type rapid press-fitting device includes a high-precision platform. A platform base is arranged at the bottom of the high-precision platform, and a plurality of corner pressing cylinders for fixing the guide rail are installed inside the platform base. An installation through hole is opened at the connection between one group of corner pressing cylinders and the high-precision platform, and a limiting groove is opened at the connection between another group of corner pressing cylinders and the high-precision platform. An eccentric pressing needle is arranged at the telescopic end of the corner pressing cylinder. An air circuit component is connected to one side of the corner pressing cylinder. A to-be-tested guide rail is placed on the top of the high-precision platform.

[0008] The air circuit component includes a connecting pipe communicated with the corner pressing cylinder, and an air pipe is arranged at the end of the connecting pipe. The air pipe penetrates through one side of the high-precision platform and is provided with a connecting head.

[0009] Preferably, the eccentric pressing needle deviates from the axis of the telescopic end of the corner pressing cylinder, and the corner pressing cylinder with the telescopic end penetrating through the installation through hole is fixedly installed inside the platform base.

[0010] Preferably, a bottom guide plate is provided at the bottom of the corner pressing cylinder where the telescopic end penetrates through the limit groove, and the bottom guide plate is fixedly installed inside the platform base.

[0011] Preferably, a guide chute is provided at the connection between the bottom guide plate and the corner pressing cylinder, and a guide slider installed at the bottom of the corner pressing cylinder is arranged inside the guide chute.

[0012] Preferably, the corner pressing cylinder slides on the bottom guide plate through the guide chute and the guide slider, and the corner pressing cylinder slides inside the high-precision platform through the limit groove.

[0013] Preferably, the connecting pipe is communicated with the connecting head through an air pipe, and a solenoid valve and a gas supply component are installed at one end of the connecting head through a pipeline.

[0014] Preferably, the to-be-tested guide rail is installed on the top of the high-precision platform through an eccentric pressing pin, and the eccentric pressing pin is adapted to the position of the screw through hole in the to-be-tested guide rail.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. Through the provided gas circuit assembly, the corresponding corner pressing cylinder and the eccentric pressing pin can achieve simultaneous actions through this set of corresponding gas circuit assemblies, completing clamping and loosening almost at the same time, which is more time-saving. At the same time, under the same gas circuit, the compressed air pressure is the same, and the pressure difference of each group of corner pressing cylinders is very small. The downward pressure of the telescopic pull rod of the corner pressing cylinder is also stable and uniform, avoiding the situation that the local area of the guide rail cannot closely adhere to the detection tabletop, thus affecting the detection accuracy;

[0017] 2. Through the provided corner pressing cylinder, it can drive the eccentric pressing pin to rotate and press down, simulating the installation of screws by locking, solving the problem of low installation efficiency of screws in the past, and further avoiding the trouble of manually using manual tools to install, lock, and disassemble screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is the overall structural view of the present utility model;

[0020] Figure 2 It is the sectional structural schematic diagram of the high-precision platform of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the bottom guide plate of the present utility model;

[0022] Figure 4 of the present utility model Figure 3 Enlarged view of A in

[0023] Explanation of reference numerals:

[0024] 1. High-precision platform; 2. Installation through hole; 3. Pneumatic circuit assembly; 301. Connecting pipe; 302. Air pipe; 303. Connector; 4. Corner pressing cylinder; 5. Eccentric pressing needle; 6. Limit groove; 7. Guide rail to be measured; 8. Bottom guide plate; 9. Guide slider; 10. Guide chute. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] The present utility model provides a technical solution:

[0027] Please refer to Figures 1 to 4 , an eccentric quick press-fitting device, including a high-precision platform 1, a platform base is provided at the bottom of the high-precision platform 1, and a plurality of corner pressing cylinders 4 for fixing the guide rail are installed inside the platform base. An installation through hole 2 is provided at the connection between one of the corner pressing cylinders 4 and the high-precision platform 1, and a limit groove 6 is provided at the connection between the other corner pressing cylinder 4 and the high-precision platform 1. An eccentric pressing needle 5 is provided at the telescopic end of the corner pressing cylinder 4. A pneumatic circuit assembly 3 is connected to one side of the corner pressing cylinder 4, and a guide rail 7 to be measured is placed on the top of the high-precision platform 1;

[0028] The pneumatic circuit assembly 3 includes a connecting pipe 301 that communicates with the corner pressing cylinder 4, and a trachea 302 is provided at the end of the connecting pipe 301. The trachea 302 passes through one side of the high-precision platform 1 and is provided with a connector 303;

[0029] The axis of the eccentric needle pressing member 5 is offset from the axis of the telescopic end of the rotary pressing cylinder 4. The rotary pressing cylinder 4 with a telescopic end passing through the installation through-hole 2 is fixedly installed inside the platform base. The connecting pipe 301 is communicated with the connector 303 through the air pipe 302. One end of the connector 303 is provided with a solenoid valve and a gas supply assembly through a pipeline. The gas supply assembly can be a gas pump assembly or other equipment for supplying gas to the cylinder. The solenoid valve is used to control the on-off of the gas path. The solenoid valve and the gas supply assembly are both existing publicly disclosed technical solutions and can supply gas to the cylinder, so no further description is given here. The to-be-tested guide rail 7 is installed on the top of the high-precision platform 1 through the eccentric needle pressing member 5, and the position of the screw through-hole in the to-be-tested guide rail 7 is adapted to the eccentric needle pressing member 5.

[0030] By adopting the above technical solution, the installation through-holes 2 are pre-machined on the high-precision platform 1 at appropriate intervals. The rotary pressing cylinder 4 is installed inside the platform base. The rotation angle of the rotary pressing cylinder 4 is 90°. The eccentric needle pressing member 5 is installed on the rotating pull rod at the top of the rotary pressing cylinder 4. When the guide rail needs to be detected, the eccentric needle pressing member 5 at the top of the rotary pressing cylinder 4 is at the highest position and its head can pass through the screw through-hole of the to-be-tested guide rail 7. The to-be-tested guide rail 7 is placed flat on the surface of the marble high-precision platform 1. The same group of rotary pressing cylinders 4 is supplied with gas through the gas path assembly 3. At this time, while the rotary pressing cylinder 4 pulls the eccentric needle pressing member 5 to move downward, the head of the eccentric needle pressing member 5 rotates 90 degrees. Since the geometric center of the head of the eccentric needle pressing member 5 is not concentric with the rotation center of the eccentric needle pressing member 5, when the head of the eccentric needle pressing member 5 rotates and presses downward, it can press on the screw counterbore shoulder of the to-be-tested guide rail 7 to fix the to-be-tested guide rail 7. Because the same group of rotary pressing cylinders 4 get gas and pull the eccentric needle pressing member 5 to press downward at the same time, the effect of pressing in place at one time can be achieved. Since there are nearly a hundred installation holes for one to-be-tested guide rail 7, all the rotary pressing cylinders 4 and the eccentric needle pressing members 5 can achieve simultaneous action through the corresponding gas path assembly 3 of this group and complete pressing and loosening almost at the same time, which is more time-saving. At the same time, under the same gas path, the compressed air pressure is the same, and the pressure difference of each group of rotary pressing cylinders 4 is very small. The downward pressing force of the telescopic pull rod of the rotary pressing cylinder 4 is also stable and uniform, avoiding the situation that the local area of the guide rail cannot be closely attached to the detection tabletop, thus affecting the detection accuracy. Moreover, when it is necessary to loosen and release the to-be-tested guide rail 7 after the detection is completed, each rotary pressing cylinder 4 can get gas at the same time and push the eccentric needle pressing member 5 upward and rotate at the same time, so as to release the to-be-tested guide rail 7, which can avoid the trouble of manually using manual tools to install, lock and disassemble screws.

[0031] Specifically, as Figure 3 and Figure 4As shown in the figure, a bottom guide plate 8 is provided at the bottom of the telescopic end passing through the corner of the limit groove 6 of the corner pressing cylinder 4, and the bottom guide plate 8 is fixedly installed inside the platform base. A guide chute 10 is provided at the connection between the bottom guide plate 8 and the corner pressing cylinder 4, and a guide slider 9 installed at the bottom of the corner pressing cylinder 4 is provided inside the guide chute 10. The corner pressing cylinder 4 slides on the bottom guide plate 8 through the guide chute 10 and the guide slider 9, and the corner pressing cylinder 4 slides inside the high-precision platform 1 through the limit groove 6.

[0032] By adopting the above technical solution, in order to avoid the mismatch between the screw through holes on the to-be-tested guide rail 7 and the position of the corner pressing cylinder 4, a set of slidable corner pressing cylinders 4 is provided. This set of corner pressing cylinders 4 slides on the bottom guide plate 8 through the guide chute 10 and the guide slider 9, so that the eccentric pressing pin 5 on the rotating pull rod at the top of the corner pressing cylinder 4 slides inside the high-precision platform 1 through the limit groove 6, making the position of the eccentric pressing pin 5 match the position of the screw through holes on the to-be-tested guide rail 7. The to-be-tested guide rail 7 can be fixed according to the above fixing method.

[0033] Working principle: Installation through holes 2 are pre-processed on the high-precision platform 1 at appropriate intervals. The corner pressing cylinder 4 is installed inside the platform base. The rotation angle of the corner pressing cylinder 4 is 90°. An eccentric pressing pin 5 is installed on the rotating pull rod at the top of the corner pressing cylinder 4. When the guide rail needs to be detected, the eccentric pressing pin 5 at the top of the corner pressing cylinder 4 is at the highest position and its head can pass through the screw through holes of the to-be-tested guide rail 7. The to-be-tested guide rail 7 is placed flat on the surface of the marble high-precision platform 1. The same group of corner pressing cylinders 4 is supplied with gas through the gas circuit assembly 3. At this time, while the corner pressing cylinder 4 pulls the eccentric pressing pin 5 downward, the head of the eccentric pressing pin 5 rotates 90 degrees. Because the geometric center of the head of the eccentric pressing pin 5 is not concentric with the rotation center of the eccentric pressing pin 5, when the head of the eccentric pressing pin 5 rotates and presses downward, it can press on the screw counterbore shoulder of the to-be-tested guide rail 7, thereby fixing the to-be-tested guide rail 7. Because the same group of corner pressing cylinders 4 get gas and pull the eccentric pressing pin 5 downward at the same time, the effect of one-time pressing in place can be achieved. And when it is necessary to release the to-be-tested guide rail 7 after the detection is completed, each corner pressing cylinder 4 can get gas at the same time and push the eccentric pressing pin 5 upward and rotate at the same time, thereby releasing the to-be-tested guide rail 7.

[0034] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An eccentric quick press-fitting device, comprising a high-precision platform (1), characterized in that: A platform base is provided at the bottom of the high-precision platform (1), and a plurality of groups of corner pressing cylinders (4) for fixing the guide rails are installed inside the platform base, and a mounting through hole (2) is provided at the connection between one group of the corner pressing cylinders (4) and the high-precision platform (1), and a limiting groove (6) is provided at the connection between another group of the corner pressing cylinders (4) and the high-precision platform (1), an eccentric pressing needle (5) is provided at the telescopic end of the corner pressing cylinder (4), an air path assembly (3) is connected to one side of the corner pressing cylinder (4), and a guide rail (7) to be measured is placed on the top of the high-precision platform (1); The air circuit assembly (3) comprises a connecting pipe (301) interconnected with the corner downward pressure cylinder (4), and an air pipe (302) is provided at the end of the connecting pipe (301). The air pipe (302) passes through one side of the high-precision platform (1) and is equipped with a connector (303).

2. The eccentric quick press-fit device according to claim 1, characterized in that: The axes of the eccentric pressing needle (5) and the telescopic end of the corner pressing cylinder (4) deviate from each other, and the corner pressing cylinder (4) whose telescopic end passes through the mounting through hole (2) is fixedly mounted inside the platform base.

3. The eccentric quick press-fitting device according to claim 1, characterized in that: A bottom guide plate (8) is provided at the bottom of the corner downward pressing cylinder (4) whose telescopic end passes through the limiting groove (6), and the bottom guide plate (8) is fixedly installed inside the platform base.

4. The eccentric quick press-fit device according to claim 3, characterized in that: A guide slot (10) is provided at the connection between the bottom guide plate (8) and the corner pressing cylinder (4), and a guide sliding block (9) installed at the bottom of the corner pressing cylinder (4) is provided inside the guide slot (10).

5. The eccentric quick press-fit device according to claim 4, characterized in that: The corner pressing cylinder (4) slides on the bottom guide plate (8) via a guide slide groove (10) and a guide slide block (9), and the corner pressing cylinder (4) slides within the high-precision platform (1) via a limit groove (6).

6. The eccentric quick press-fit device according to claim 1, characterized in that: The connecting pipe (301) is in communication with the connecting head (303) via the air pipe (302), and one end of the connecting head (303) is provided with a solenoid valve and an air supply assembly via a pipeline.

7. The eccentric quick press-fit device according to claim 1, characterized in that: The guide rail (7) to be measured is installed on the top of the high-precision platform (1) via an eccentric pressure needle (5), and the eccentric pressure needle (5) and the screw through hole position in the guide rail (7) to be measured are mutually adapted.

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