Spinning turret spindle fixing mechanism

Abstract

A spinning turret spindle fixing mechanism comprises a spindle, the end, exposed out of a base, of the spindle is fixed through a fixing part, an annular groove is formed in the outer surface of the base with the penetrating position of the spindle as the center, then an extension groove extends from one side of the annular groove to the periphery, and the annular groove and the extension groove jointly form a limiting groove. And a buffer clamping cushion sleeve is matched with the annular groove at one end of the limiting groove, one side of the buffer clamping cushion sleeve sinks into the limiting groove and abuts against the base, and the limiting groove at the other side abuts against the fixing piece. The buffering clamping cushion sleeve is clamped between the end fixing piece, exposed out of the base, of the main shaft and the base from the side edge in an interference sliding mode, so that the main shaft is kept in the state of being tensioned by the bottom fixing piece all the time, and the situation that due to stress borne by the main shaft, the main shaft displaces, threads are abraded, the main shaft and the fixing piece are unstable, and the operation precision of a tool turret tool is affected is avoided.

Description

Technical Field

[0001] The utility model relates to a spindle fixing mechanism, in particular to a spindle fixing mechanism for a spinning turret, and belongs to the technical field of IPC classification No. B23B. Background Art

[0002] As a conventional component of CNC lathes, the turret can realize rapid switching between tools by controlling the rotation of the turret device through program. The tool needs to process the workpiece. In order to ensure the processing accuracy, the stability of the turret is very important.

[0003] The spindle of the turret passes through the main box of the turret, and the part exposed from the base of the turret is provided with threads and fasteners such as nuts for locking. In order to meet the processing requirements of milling and drilling of workpieces, the driving mechanism arranged above the main box needs to drive the main box to rotate, and during the rotation, the oil cylinder is used to move the adjustment pad to apply thrust to separate the bottom surface of the main box from the base to reduce the load on the turret. In order to ensure the stability of the internal operation, the spindle needs to be fixed, so that the threads at the bottom of the spindle will be subjected to stress along with the spindle. Over time, a gap will be generated between the threads and the nut due to the deformation of the threads, which will reduce the stability of the turret.

[0004] That is, the fixation of the bottom of the spindle needs to be further improved so that the turret can ensure sufficient stability. Summary of the invention

[0005] The purpose of the utility model is to solve the above-mentioned problems. The structure of the installation of the bottom of the turret spindle and the base is improved to provide a more reasonable and stable spinning turret fixing structure which can prevent the thread from being damaged due to stress at the bottom of the spindle.

[0006] The technical solution to the problem to be solved by the utility model is as follows

[0007] The spinning turret fixing structure includes a main shaft, and the end of the main shaft exposed from the base is fixed by a fixing piece, and is characterized in that an annular groove is arranged on the outer surface of the base with the main shaft penetrating therethrough as the center, and then an extension groove is extended from one side of the annular groove to the periphery, and the annular groove and the extension groove together constitute a limiting groove, and a buffer gasket sleeve matches the annular groove at one end of the limiting groove, and one side of the buffer gasket sleeve is sunken in the limiting groove and abuts against the base, and the other side is exposed from the limiting groove and abuts against the fixing piece.

[0008] Preferably, the limiting groove is arranged as a long strip, and the buffer cushion sleeve corresponding to the limiting groove is composed of at least one part with a notch on one side, and the part is slid into the side of the main shaft where the fixing part is installed through an extension groove at the other end away from the main shaft penetration.

[0009] Preferably, the buffer card gasket sleeve is composed of two left and right half sleeves matching the sides of the main shaft.

[0010] Preferably, a locking hole is provided on the fixing member, and the fixing member is fixed to the main shaft by inserting the locking member into the locking hole.

[0011] The beneficial effects of the utility model are as follows

[0012] Compared with the prior art, the utility model inserts a buffer sleeve from the side through interference fit between the end fixing piece of the spindle exposed from the base and the base, so that the spindle is always kept in a tightened state by the bottom fixing piece, avoiding the spindle being displaced due to stress and causing the thread to be worn, making the spindle and the fixing piece unstable, and affecting the operating accuracy of the turret tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0015] Figure 2 Figure 1 Schematic diagram of the implementation process;

[0016] Figure 3 It is a structural schematic diagram of the utility model from another angle. DETAILED DESCRIPTION

[0017] The following will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, that is, a large number of specific details are given to provide a more thorough understanding of the present invention. However, for those skilled in the art, the present invention can be implemented without one or more of these details. In these examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0018] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. Therefore, they are only used as examples and cannot be used to limit the scope of protection of the present invention.

[0019] In addition, it should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0020] See also Figures 1 to 3The present spinning turret fixing structure is a high-precision, high-stability mechanical device, which is mainly improved on the bottom of the spindle 1 and the base 2 of the existing spinning turret. First, it is composed of a buffer pad 4 between a fixing part 3 arranged at the bottom of the spindle and the base 2. The spindle 1, as a core component, undertakes the important task of rotating the turret and changing the tool. The end exposed from the base 2 is precisely processed and assembled, and is tightly fixed by a sturdy and durable fixing part 3, which can be a nut.

[0021] The base 2 serves as a supporting platform for the entire spinning turret. The turret is installed on the lathe tool holder through the base 2. An annular groove 5 is set on the outer surface of the base 2 with the main shaft 1 passing through it as the center, and then an extension groove 6 is extended from one side of the annular groove 5 to the periphery. The annular groove 5 and the extension groove 6 together constitute a limiting groove. The buffer card gasket sleeve 4 matches the annular groove 5 at one end of the limiting groove, and one side 41 of it is sunken in the limiting groove and abuts against the base 2, and the other side is exposed from the limiting groove and abuts against the fixing part 3.

[0022] The buffer pad 4 is another important component, one side of which is cleverly trapped in the groove, which is limited by the side wall of the groove and prevents the buffer pad 4 from being squeezed out or loosened after installation. When setting, the upper and lower contact surfaces of the buffer pad 4 can be matched with zero clearance or relatively interfered with and then hard slid in. This design allows the buffer pad 4 to always tighten the part of the spindle 1 exposed from the base 2, so that it can be stably positioned on the fixing part 3, ensuring the accuracy of the entire spinning turret and the stability of long-term use.

[0023] Overall, this spinning turret fixed structure is well designed, fully reflecting the high-level technology of my country's machinery manufacturing industry. It can not only meet the use requirements of various types of spinning turrets, but also adapt to various complex working conditions, providing a strong guarantee for the sustainable development of my country's manufacturing industry.

[0024] Furthermore, as an improvement to the present invention, the limiting groove is arranged as a long strip, and the buffer cushion sleeve corresponding to the limiting groove is composed of at least one part with a notch on one side, and the part is slid into the side of the main shaft where the fixing part has been installed through an extension groove at the other end away from the main shaft penetration point.

[0025] The design of this part is very ingenious. This installation method is simple and fast, and greatly improves the assembly efficiency of the spinning turret. The notch design on the part allows it to be installed from the side into the spindle side 11 between the fixing part 3 and the base 2, and then rotated to rotate the side without the notch to the other side of the annular groove 5. The groove wall of the annular groove can effectively prevent the buffer pad 4 from detaching from the side of the spindle without other locking parts.

[0026] Further, as an improvement to the present invention, the buffer sleeve 4 is composed of two left and right half sleeves matching the sides of the main shaft. The left and right half sleeves are two half sleeves of the same size and symmetrically arranged.

[0027] Similarly, during implementation, one of the half sleeves, which can be the left half sleeve or the right half sleeve, will slide along the groove from the extension groove 6 to the side 11 of the main shaft 1 between the fixing member 3 and the base 2, and then rotate the half sleeve to the other side 12 of the main shaft. Because the half sleeve acts as a buffer sleeve 4 and matches the annular groove 5, the match means that the half sleeve matches the annular groove 5 in size and shape, and is just inserted between the side 12 of the main shaft and the annular groove 5, so when it is rotated to the other side 12 of the main shaft 1, the half sleeve is limited and can only rotate around the main shaft. Then continue to install the remaining half sleeve to the side of the main shaft in the same way. After the two half sleeves are assembled, rotate the two half sleeves together 90 degrees, so that half of the two half sleeves are rotated into the annular groove on the other side of the main shaft, so as to achieve mutual resistance and blocking with the groove wall (see Figure 1 ).

[0028] Further, as an improvement of the present invention, the fixing member is provided with a locking hole 31, and a locking member (not shown) is inserted into the locking hole 31 to fix the fixing member 3 to the spindle 1. Inserting the locking member through the locking hole 31 can fully fix the fixing member 31 to the spindle 1.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. 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 utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A spindle fixing mechanism for a spinning turret, comprising a spindle, wherein one end of the spindle exposed from the base is fixed by a fixing member, and is characterized in that: The outer surface of the base is provided with an annular groove centered at the point where the main shaft passes through, and then an extension groove extends from one side of the annular groove to the periphery, the annular groove and the extension groove together constitute a limiting groove, a buffer card gasket sleeve matches the annular groove at one end of the limiting groove, one side of which is sunken in the limiting groove and abuts against the base, and the other side is exposed from the limiting groove and abuts against the fixing part.

2. The spindle fixing mechanism of the spinning turret according to claim 1 is characterized in that: The limiting groove is set as a long strip, and the buffer cushion sleeve corresponding to the limiting groove is composed of at least one part with a notch on one side. The part is slid into the side of the main shaft where the fixing part is installed through an extension groove at the other end away from the main shaft penetration.

3. The spindle fixing mechanism of the spinning turret according to claim 1 or 2, characterized in that: The buffer card gasket sleeve is composed of two half sleeves that match the sides of the main shaft.

4. The spindle fixing mechanism of the spinning turret according to claim 1 is characterized in that: The fixing piece is provided with a locking hole, and the fixing piece is fixed to the main shaft by inserting the locking piece into the locking hole.

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