Quick-change main shaft

Abstract

The utility model belongs to the technical field of shaft sleeve replacement, and particularly relates to a quick-change main shaft which comprises a fixed main shaft, a locking assembly and a main shaft fixing assembly. The locking assembly comprises a locking check ring, a locking sleeve, a spring sleeve, a locking spring and a locking steel ball, the locking check ring is installed on the locking steel ball, the locking sleeve abuts against the locking check ring and the spring sleeve, the locking spring is arranged on the outer side of the fixed main shaft in a sleeving mode and abuts against the spring sleeve, and the locking steel ball is installed on the fixed main shaft. The main shaft fixing assembly comprises a main shaft spacer bush, a main bearing, a main shaft spring and a top sleeve, the main shaft spacer bush is connected to the outer side of the fixed main shaft, the main bearing is connected to the outer side of the main bearing, the main shaft spacer bush is sleeved with the main shaft spring, and the top sleeve is connected to the outer side of the main shaft spacer bush. According to the quick-change main shaft, the locking spring is pushed by pushing the spring sleeve, then the locking spring pushes the locking sleeve, then the locking sleeve pushes the locking check ring to press the steel ball to lock the quick-change head, alignment operation is not needed, and installation and replacement are more convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the shaft sleeve replacement, especially relates to a quick-change main shaft. BACKGROUND

[0002] The quick-change chuck is an advanced and efficient clamp (machine tool accessory) used in brick, expansion, hinge and attack in machining. In the moving parts, long-term friction can easily cause the wear of parts, and when the gap between the shaft and the hole is worn to a certain extent, the parts must be replaced, therefore, a material with low hardness and good wear resistance is selected as the shaft sleeve.

[0003] For the use of the quick-change sleeve, the problem of part wear can be solved, and for some parts with a large depth, the method of lengthening the quick-change sleeve rod can be used, the chuck is used in cooperation with the sleeve, the service life can be prolonged, and the cost can be reduced. However, the existing quick-change sleeve needs to be aligned with the shaft sleeve and connected to the main shaft, so that the shaft sleeve is inconvenient to install and replace. UTILITY MODEL CONTENTS

[0004] The utility model discloses a quick-change main shaft, which aims to solve the technical problem that the quick-change sleeve in the prior art needs to be aligned with the shaft sleeve and connected to the main shaft, resulting in inconvenience in installation and replacement of the shaft sleeve.

[0005] To achieve the above object, the utility model embodiment provides a quick-change main shaft, which comprises a fixed main shaft, a locking assembly and a main shaft fixing assembly, the locking assembly is connected to one end of the fixed main shaft, and the main shaft fixing assembly is connected to the other end of the fixed main shaft.

[0006] The locking assembly comprises a locking retainer, a locking sleeve, a spring sleeve, a locking spring and a locking steel ball, the locking retainer, the locking sleeve and the spring sleeve are sequentially sleeved on the outside of the fixed main shaft, the locking retainer is installed on the locking steel ball, the locking sleeve is respectively abutted with the locking retainer and the spring sleeve, the locking spring is sleeved on the outside of the fixed main shaft and abutted with the spring sleeve, and the locking steel ball is installed on the fixed main shaft.

[0007] The main shaft fixing assembly comprises a main shaft spacer, a main shaft bearing, a main shaft spring and a top sleeve, the main shaft spacer is connected to the outside of the fixed main shaft, the main shaft bearing is connected to the outside of the main shaft bearing, the main shaft spring is sleeved on the outside of the main shaft spacer, and the top sleeve is connected to the outside of the main shaft spacer.

[0008] As an optional scheme of the utility model, the locking retainer is provided with a steel ball positioning hole, the steel ball positioning hole corresponds in position to the locking steel ball, and the locking steel ball is fixedly installed in the steel ball positioning hole.

[0009] As optional scheme of the utility model, the locking steel ball is provided with multiple, and is uniformly fixed and installed on the fixed main shaft, the steel ball positioning hole is same in number with the locking steel ball.

[0010] As optional scheme of the utility model, the locking sleeve is fixedly connected with locking step, one end of the locking spring is abutted with the spring sleeve, and the other end is abutted with the locking step.

[0011] As optional scheme of the utility model, the main shaft fixing assembly further includes bearing sleeve and bearing cover plate, the bearing sleeve is sleeved on the outside of the bearing and top sleeve, the bearing cover plate is fixedly connected with the fixed main shaft and bearing sleeve respectively, a limiting step is fixedly connected in the bearing sleeve, the main shaft spring is arranged in the bearing sleeve, one end of the main shaft spring is abutted with the limiting step, and the other end is abutted with the top sleeve.

[0012] As optional scheme of the utility model, one end of the main shaft spacer sleeve is fixedly connected with a limiting sleeve, and one end of the limiting sleeve is abutted with the top sleeve.

[0013] The one or more technical solutions in the quick-change main shaft provided by the utility model embodiment at least have one of the following technical effects:

[0014] The quick-change main shaft provided by the application includes a fixed main shaft, a locking assembly and a main shaft fixing assembly, the locking spring is pushed by pushing the spring sleeve, then the locking sleeve is pushed by the locking spring, and then the locking sleeve pushes the locking retainer ring to compress the steel ball to lock the quick-change head, without alignment operation, installation and replacement are more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the utility model embodiments, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Fig. 1 The utility model provides the perspective drawing of quick-change main shaft.

[0017] Fig. 2 The utility model provides the perspective drawing of quick-change main shaft.

[0018] Fig. 3 The utility model provides the explosion drawing of quick-change main shaft.

[0019] In the drawings, various reference signs indicate:

[0020] 1, fixed main shaft;2, locking assembly;3, main shaft fixing assembly;

[0021] 21, locking ring; 22, locking sleeve; 23, spring sleeve; 24, locking spring; 25, locking steel ball; 26, steel ball positioning hole; 27, locking step;

[0022] 31, main shaft spacer; 32, main bearing; 33, main shaft spring; 34, top sleeve; 35, bearing sleeve; 36, bearing cover plate; 38, limiting sleeve. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0024] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0026] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0027] In one embodiment of the present application, as Figs. 1-3As shown, the quick-change spindle is provided with a fixed spindle 1, a locking assembly 2 and a spindle fixing assembly 3, the locking assembly 2 is connected to one end of the fixed spindle 1, and the spindle fixing assembly 3 is connected to the other end of the fixed spindle 1.

[0028] The locking assembly 2 comprises a locking ring 21, a locking sleeve 22, a spring sleeve 23, a locking spring 24 and a locking steel ball 25. The locking ring 21, the locking sleeve 22 and the spring sleeve 23 are sequentially sleeved outside the fixed spindle 1, and the locking ring 21 is fixedly installed on the locking steel ball 25. The locking sleeve 22 abuts against the locking ring 21 and the spring sleeve 23 respectively. The locking spring 24 is sleeved outside the fixed spindle 1 and abuts against the spring sleeve 23, and the locking steel ball 25 is fixedly installed on the fixed spindle 1. The locking spring 24 is pushed by pushing the spring sleeve 23 forward, and then the locking sleeve 22 is pushed by the locking spring 24, and then the locking ring 21 is pushed by the locking sleeve 22 to press the steel ball to lock the quick-change head. The locking ring 21 is pushed backward to move the locking sleeve 22 and the spring sleeve 23 backward, so that the locking ring 21 can be taken out of the locking steel ball 25.

[0029] The spindle fixing assembly 3 comprises a spindle spacer 31, a spindle bearing 32, a spindle spring 33 and a top sleeve 34. The spindle spacer 31 is fixedly connected outside the fixed spindle 1, the spindle bearing 32 is fixedly connected outside the spindle bearing 32, the spindle spring 33 is sleeved outside the spindle spacer 31, and the top sleeve 34 is fixedly connected outside the spindle spacer 31.

[0030] The quick-change spindle provided by the application can lock the quick-change head by pushing the spring sleeve 23 to push the locking spring 24, and then the locking sleeve 22 is pushed by the locking spring 24, and then the locking ring 21 is pushed by the locking sleeve 22 to press the steel ball, without the need for alignment operation, and the installation and replacement are more convenient.

[0031] In another embodiment of the utility model, the locking ring 21 of the quick-change spindle is provided with a steel ball positioning hole 26, the steel ball positioning hole 26 corresponds to the position of the locking steel ball 25, and the locking steel ball 25 is fixedly installed in the steel ball positioning hole 26.

[0032] In another embodiment of the utility model, the locking steel ball 25 of the quick-change spindle is provided with a plurality of locking steel balls, and the locking steel balls are fixedly installed on the fixed spindle 1, and the number of the steel ball positioning hole 26 is the same as that of the locking steel ball 25.

[0033] In another embodiment of the utility model, the locking sleeve 22 of the quick-change spindle is fixedly connected with a locking step 27, one end of the locking spring 24 abuts against the spring sleeve 23, and the other end abuts against the locking step 27.

[0034] In another embodiment of the utility model, the spindle fixing assembly 3 of the quick-change spindle further comprises a bearing sleeve 35 and a bearing cover plate 36, the bearing sleeve 35 is sleeved outside the bearing and the top sleeve 34, the bearing cover plate 36 is fixedly connected with the fixed spindle 1 and the bearing sleeve 35 respectively, the bearing sleeve 35 is fixedly connected with a limiting step inside, the spindle spring 33 is arranged inside the bearing sleeve 35 and is used for eliminating the shaft gap, one end of the spindle spring 33 abuts against the limiting step, and the other end abuts against the top sleeve 34. Through the bearing sleeve 35 and the bearing cover plate 36, the quick-change spindle of the application can be fixed to the machine table.

[0035] In another embodiment of the utility model, one end of the spindle spacer sleeve 31 of the quick-change spindle is fixedly connected with a limiting sleeve 38, and one end of the limiting sleeve 38 abuts against the top sleeve 34. The limiting sleeve 38 has a limiting effect on the top sleeve 34.

[0036] The quick-change spindle provided by the application locks the quick-change head by pushing the spring sleeve 23 to push the locking spring 24, then pushing the locking sleeve 22 by the locking spring 24, and then pushing the locking block ring 21 and the steel ball by the locking sleeve 22, so that the quick-change head is locked, and the installation and replacement are more convenient without alignment operation.

[0037] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A quick-change spindle, characterized in that: It includes a fixed spindle, a locking assembly and a spindle fixing assembly, wherein the locking assembly is connected to one end of the fixed spindle, and the spindle fixing assembly is connected to the other end of the fixed spindle; The locking assembly includes a locking retaining ring, a locking sleeve, a spring sleeve, a locking spring and a locking steel ball. The locking retaining ring, the locking sleeve and the spring sleeve are sequentially sleeved on the outside of the fixed main shaft. The locking retaining ring is installed on the locking steel ball. The locking sleeve abuts against the locking retaining ring and the spring sleeve respectively. The locking spring is sleeved on the outside of the fixed main shaft and abuts against the spring sleeve. The locking steel ball is installed on the fixed main shaft. The spindle fixing assembly includes a spindle spacer, a main bearing, a spindle spring and a top sleeve. The spindle spacer is connected to the outside of the fixed spindle, the main bearing is connected to the outside of the main bearing, the spindle spring is sleeved on the outside of the spindle spacer, and the top sleeve is connected to the outside of the spindle spacer.

2. The quick-change spindle according to claim 1, characterized in that: A steel ball positioning hole is provided on the side of the locking retaining ring, and the steel ball positioning hole corresponds to the position of the locking steel ball, and the locking steel ball is fixedly installed in the steel ball positioning hole.

3. The quick-change spindle according to claim 2, characterized in that: The locking steel balls are provided in plurality and are evenly fixed on the fixed main shaft, and the number of the steel ball positioning holes is the same as the number of the locking steel balls.

4. The quick-change spindle according to claim 1, characterized in that: A locking step is fixedly connected inside the locking sleeve. One end of the locking spring abuts against the spring sleeve, and the other end abuts against the locking step.

5. The quick-change spindle according to claim 1, characterized in that: The spindle fixing assembly also includes a bearing sleeve and a bearing cover plate. The bearing sleeve is arranged on the outside of the bearing and the top sleeve. The bearing cover plate is fixedly connected to the fixed spindle and the bearing sleeve respectively. A limiting step is fixedly connected inside the bearing sleeve. The spindle spring is arranged in the bearing sleeve. One end of the spindle spring abuts against the limiting step, and the other end abuts against the top sleeve.

6. The quick-change spindle according to claim 1, characterized in that: One end of the main shaft spacer is fixedly connected to the limiting sleeve, and one end of the limiting sleeve is in contact with the top sleeve.

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