Guide shaft

Abstract

The utility model relates to the technical field of guide shafts, in particular to a guide shaft which comprises a shaft body, annular grooves are formed in the two ends of the shaft body, and a plurality of through type installation grooves are formed in the outer side of the middle of the shaft body. The friction strip is arranged in the mounting groove in a matched mode, a steel ball groove is formed in the middle of the end, away from the mounting groove, of the friction strip, and arc-shaped notches are formed in the two ends of the friction strip; the annular grooves are formed in the two ends of the shaft body, the mounting grooves are formed in the axial direction of the shaft body, the friction strips are arranged in the mounting grooves in a matched mode, the shaft check rings are arranged in the arc-shaped notches in the annular grooves and the friction strips to limit the friction strips, and the linear bearing is arranged at the other end of the shaft body in a sleeved mode. The friction strips and the steel balls in the linear bearing are installed in a one-to-one correspondence mode, so that the friction strips and the steel balls are in surface contact when interacting, the pressure intensity is greatly reduced, scratches are not prone to being generated through friction, the service life of the shaft body is prolonged, and meanwhile the friction strips are convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to guide shaft technical field especially relates to a guide shaft. BACKGROUND

[0002] Guide shaft is a kind of shaft for orientation or support workpiece, is applied in machinery manufacturing, automobile manufacturing, instrument and meter etc. industry in large quantities, guide shaft refers to only bear weight, guide the direction of movement of mechanical parts, not responsible for the transmission of motion shaft, while having the effect of bearing and dispersing impact force, prevent the excessive vibration and deformation of moving parts, generally with linear bearing is used in conjunction.

[0003] The guide shaft of the prior art is composed of single or multiple cylindrical surfaces, when used in conjunction with linear bearing, several rows of steel balls are arranged in the linear bearing, and linear motion is realized by mutual abrasion between the steel balls and the guide shaft, but the steel balls and the guide shaft are in line contact, so that the shaft is easily abraded with scratches;Meanwhile, the existing guide shaft is a one-piece shaft, and is easy to wear, and once worn, the whole shaft needs to be replaced, which not only increases the use cost, but also is more cumbersome when replacing. UTILITY MODEL CONTENTS

[0004] The utility model discloses a guide shaft to overcome the prior art, to solve the technical problem that the existing one-piece guide shaft is easy to scratch when used in conjunction with linear bearing and needs to be replaced as a whole.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A guide shaft, comprising:

[0007] The shaft body is provided with an annular groove at both ends, and a plurality of through mounting grooves are arranged on the outer side of the middle part of the shaft body;

[0008] The friction strip is matched in the inner part of the mounting groove, the middle part of the end of the friction strip away from the mounting groove is provided with a steel ball groove, and the both ends of the friction strip are provided with arc-shaped notches;

[0009] The shaft stop ring is clamped in the inner part of the arc-shaped notch.

[0010] Further, the cross section of the mounting groove is in the shape of a concave character.

[0011] Further, the plurality of mounting grooves are arranged in a ring array about the central axis of the shaft body.

[0012] Further, the size of the annular groove is equal to the size of the arc-shaped notch, and the inner wall of the annular groove is flush with the inner wall of the arc-shaped notch.

[0013] Further, the inner ring of the shaft check ring is in contact with the inner wall of the annular groove and the inner wall of the arc-shaped notch.

[0014] Further, the number of the friction strips is equal to the number of the mounting grooves.

[0015] Further, the shaft body is subjected to hardening treatment.

[0016] Further, the friction strip is subjected to hardening and hard chrome plating treatment.

[0017] Further, the mounting groove is in the shape of isosceles trapezoid in cross section.

[0018] Further, the friction strip is in the shape of isosceles trapezoid in cross section.

[0019] The present application has the following advantages:

[0020] The present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0023] Figure 2 is a schematic diagram of the front view structure of the present application;

[0024] Figure 3 is a schematic diagram of the exploded structure of the present application;

[0025] Figure 4 is a schematic diagram of the Figure 2 is a schematic diagram of the cross-sectional structure of the present application at A-A;

[0026] Figure 5 is a schematic diagram of the single friction strip of the present application;

[0027] Figure 6The utility model discloses a shaft body section view schematic diagram.

[0028] The figure mark explanation:1, shaft body, 2, installation groove, 3, annular groove, 4, friction strip, 5, shaft baffle, 6, steel ball groove, 7, arc notch. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor all belong to the range of protection of the utility model.

[0030] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the existence of the described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or sets thereof.

[0031] It should also be understood that the terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the specification and the appended claims of the utility model, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0032] It should be further understood that the term "and / or" used in the specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0033] Embodiment 1

[0034] Please refer to Figures 1-5 As shown in the figure, a guide shaft, shaft body 1, both ends of the shaft body 1 are provided with annular grooves 3, and the outer side of the middle part of the shaft body 1 is provided with a plurality of through type installation grooves 2; friction strip 4, the friction strip 4 is matched in the inside of the installation groove 2, and the middle part of the end of the friction strip 4 away from the installation groove 2 is provided with a steel ball groove 6, and both ends of the friction strip 4 are provided with arc notches 7; shaft baffle 5, the shaft baffle 5 is clamped in the inside of the arc notch 7.

[0035] In assembly, the mounting groove 2 can be customized according to the corresponding linear bearing, the friction strip 4 is installed in the mounting groove 2, and the shaft stop ring 5 is installed in the annular groove 3 on the shaft body 1 and the arc-shaped notch 7 on the friction strip 4; only the shaft stop ring 5 needs to be installed at one end of the shaft body 1 under normal working conditions, and the other end is used for linear bearing in and out; each friction strip 4 is installed one by one with the steel ball inside the linear bearing, and then installed as a whole on the equipment; if the working condition requires high precision, a shaft stop ring 5 can also be sleeved at the other end of the shaft body 1 for fastening; when the friction strip 4 interacts with the steel ball, it is a surface contact, the pressure is greatly reduced, and it is not easy to rub out scratches, which can improve the service life of the shaft, and the shaft body 1 does not interact with the linear bearing, and the wear only occurs on the friction strip 4; when worn, the shaft stop ring 5 can be removed, and the damaged friction strip 4 can be replaced; easy to disassemble, saving use cost.

[0036] Specifically, as shown in Figure 3 and Figure 4 , the cross section of the mounting groove 2 is in the shape of a concave character; wherein the mounting groove 2 cooperates with the friction strip 4 to facilitate positioning, installation and disassembly of the friction strip 4.

[0037] Specifically, as shown in Figure 1 , Figure 3 Figure 4 , the plurality of mounting grooves 2 are arranged in a ring array about the central axis of the shaft body 1; wherein the mounting grooves 2 are uniformly distributed on the shaft body 1, so that the friction strip 4 is uniformly installed, ensuring that the shaft body 1 and the linear bearing are uniformly stressed during work, and the acting force can be better dispersed.

[0038] Specifically, as shown in Figure 1 and Figure 2 , the size of the annular groove 3 and the size of the arc-shaped notch 7 are equal, and the inner wall of the annular groove 3 is flush with the inner wall of the arc-shaped notch 7; so that the shaft stop ring 5 can be clamped in the annular groove 3 and also in the arc-shaped notch 7, which can limit the axial and radial directions of the friction strip 4, ensuring reliable installation of the friction strip 4.

[0039] Specifically, as shown in Figure 1 and Figure 2 , the inner circle of the shaft stop ring 5 is in contact with the inner wall of the annular groove 3 and the inner wall of the arc-shaped notch 7; so that the shaft stop ring 5 is stably installed and does not loosen.

[0040] Specifically, the number of friction strips 4 is equal to the number of mounting grooves 2.

[0041] Specifically, the shaft body 1 is hardened; hardening can improve the surface hardness, wear resistance and fatigue resistance of the shaft body 1, and the hardening method is selected according to the needs.

[0042] Specifically, the friction strip 4 is subjected to hardening and hard chrome plating treatment; the hardening treatment can improve the surface hardness, wear resistance and fatigue resistance of the friction strip 4, and further improve the service life of the friction strip 4; the hardening method is selected according to the requirement.

[0043] Embodiment 2

[0044] As shown in Figure 6 The difference from embodiment 1 is that the cross section of the mounting groove 2 is isosceles trapezoidal, and the cross section of the friction strip 4 is isosceles trapezoidal, so that the friction strip 4 and the mounting groove 2 are assembled in a manner similar to the cooperation of the dovetail block and the dovetail groove, which facilitates the installation and replacement of the plurality of friction strips 4, and the axial and radial positions of the friction strip 4 are limited by the shaft retainer 5, thereby ensuring the reliability of the installation.

[0045] In summary, compared with the prior art, the bearing with seat has at least the following beneficial effects: the annular groove 3 is arranged at both ends of the shaft body 1, and a plurality of mounting grooves 2 are arranged on the shaft body 1 in the axial direction; the friction strip 4 is fitted in the mounting groove 2, and the shaft retainer 5 is fitted in the arc-shaped notch 7 on the annular groove 3 and the friction strip 4 to limit the friction strip 4; the linear bearing is arranged at the other end of the shaft body 1; each friction strip 4 is installed one-to-one with the steel ball inside the linear bearing, so that the friction strip 4 and the steel ball interact with each other in surface contact, the pressure is greatly reduced, and it is not easy to rub out scratches, thereby improving the service life of the shaft body 1, and facilitating the replacement of the friction strip 4.

[0046] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto; any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A guide shaft, characterized by, The utility model relates to a kind of shafts, including: Shaft body (1), both ends of the shaft body (1) are equipped with annular groove (3), the outside of the middle part of the shaft body (1) is equipped with multiple through mounting slot (2); Friction strip (4), the inside of the mounting slot (2) is matched with the friction strip (4), the middle part of the end of the friction strip (4) away from mounting slot (2) is equipped with steel ball groove (6), both ends of the friction strip (4) are equipped with arc-shaped notch (7); Shaft baffle (5), the inside of the arc-shaped notch (7) is clamped with the shaft baffle (5).

2. A guide shaft according to claim 1, wherein The cross section of the mounting slot (2) is concave.

3. A guide shaft according to claim 2, wherein, Multiple mounting slots (2) are arranged in a ring about the central axis of the shaft body (1).

4. A guide shaft according to claim 3, wherein The size of the annular groove (3) is equal to the size of the arc-shaped notch (7), and the inner wall of the annular groove (3) is flush with the inner wall of the arc-shaped notch (7).

5. A guide shaft according to claim 4, wherein The inner ring of the shaft baffle (5) is in contact with the inner wall of the annular groove (3) and the inner wall of the arc-shaped notch (7).

6. A guide shaft according to claim 5, wherein, The number of friction strips (4) is equal to the number of mounting slots (2).

7. A guide shaft according to claim 6, wherein The shaft body (1) is hardened.

8. A guide shaft according to claim 7, wherein The friction strip (4) is hardened and plated with hard chromium.

9. A guide shaft according to claim 8, wherein, The cross section of the mounting slot (2) is isosceles trapezoidal.

10. A guide shaft according to claim 9, wherein, The cross section of the friction strip (4) is isosceles trapezoidal.

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