Gear hobbing machine guide rail pressing plate locking mechanism

Abstract

The utility model discloses a gear hobbing machine guide rail pressing plate locking mechanism which comprises a pressing plate seat, a piston is arranged on the pressing plate seat in a sliding mode, the piston abuts against the plate face of a pressing plate to exert pressure, and an elastic pressing mechanism is arranged on the side, away from the pressing plate, of the piston on the pressing plate seat. The elastic pressing mechanism is provided with a fixing part which is fixed relative to the pressing plate seat and a pressing part which is used for applying pressure to the piston, an elastic part is arranged between the fixing part and the pressing part, and pressure is applied to the pressing part through the elastic part; the elastic piece is used for providing pressing force for the pressing plate, the mode that a piston, a sealing ring and hydraulic oil are commonly adopted by a gear hobbing machine is replaced, the structure is simple, the oil leakage risk generated in the using process of oil pressure is avoided, later overhaul and replacement are facilitated, and the working environment of workers and the stability of the locking state are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear machining equipment technical field, concretely relates to a hobbing machine guide rail pressing plate locking mechanism. BACKGROUND

[0002] The cutter holder is an important component of the hobbing machine, and the stability of power transmission and movement of the cutter holder has an important influence on the stability and precision of the hobbing machine in machining parts, and the slide rail is the movement basis for realizing the up-down movement of the cutter holder. The hobbing machine generally adopts the form of "piston + sealing ring + hydraulic oil" to lock the guide rail and the pressing plate, and eliminate the gap, but the risk of oil leakage is relatively large. In the operation process of the hobbing machine, oil leakage is one of the common faults, and once it occurs, the system cannot form a stable pressure, thereby affecting the precision of the machined parts. Therefore, it is particularly important to completely avoid the risk of oil leakage and stably realize the relative locking state of the pressing plate and the guide rail. UTILITY MODEL CONTENTS

[0003] Technical purpose: in view of the deficiencies existing in the pressing plate locking of the existing hobbing machine, the utility model discloses a hobbing machine guide rail pressing plate locking mechanism.

[0004] Technical scheme: in order to realize the above technical purpose, the utility model adopts the following technical scheme:

[0005] A hobbing machine guide rail pressing plate locking mechanism, including the pressing plate seat, the piston is arranged on the pressing plate seat and slides, the pressing force is applied through the abutment of the piston and the plate surface of the pressing plate, the elastic pressing mechanism is arranged on the pressing plate seat on the side away from the pressing plate of the piston, the elastic pressing mechanism has a fixed part relatively fixed with the pressing plate seat and a pressing part for applying pressure to the piston, and an elastic part is arranged between the fixed part and the pressing part. The pressing part is pressed by the elastic part.

[0006] Preferably, the pressing part of the utility model adopts an inverted T-shaped structure, the upper part of the pressing part is concentrically and slidably arranged in the fixed part, the step surface formed by the diameter change of the T-shaped structure is matched with the elastic part, and the two ends of the elastic part are abutted on the end face and the step surface of the fixed part.

[0007] Preferably, the upper end of the pressing part of the utility model adopts a threaded structure, after being arranged into the fixed part, the upper end of the pressing part protrudes above the fixed part, a pre-tightening nut is arranged on the pressing part, when the locking mechanism is installed, the pressing part and the fixed part are first locked and fixed through the pre-tightening nut, and after the installation of the locking mechanism is completed, the pre-tightening nut is removed.

[0008] Preferably, the pressure plate seat of this utility model is provided with a mounting hole for installing the elastic clamping mechanism. The lower part of the fixing member passes through the mounting hole, and the upper part is provided with an annular protrusion with a diameter larger than the diameter of the mounting hole. An adjusting shim is provided on the surface of the annular protrusion near the mounting hole. The pressure applied by the elastic member to the clamping member is adjusted by changing the compression amount of the elastic member by adjusting the height of the adjusting shim.

[0009] Preferably, the fixing component of this utility model is fixed to the pressure plate seat by screws.

[0010] Preferably, the elastic element of this invention is a disc spring, and the number of disc springs is selected according to the required pressure.

[0011] Preferably, the number of elastic locking mechanisms on the pressure plate seat of this utility model is several sets, and the whole assembly is symmetrical about the pressure plate seat.

[0012] Beneficial effects: The gear hobbing machine guide rail pressure plate locking mechanism disclosed in this utility model has the following beneficial effects:

[0013] 1. This utility model utilizes an elastic element to provide the clamping force of the pressure plate, replacing the "piston + sealing ring + hydraulic oil" form commonly used in gear hobbing machines. The structure is simple, avoids the risk of oil leakage during use, facilitates later maintenance and replacement, and greatly improves the working environment of the staff and the stability of the locking state.

[0014] 2. The elastic element of this utility model uses a disc spring. Disc springs have high load-bearing capacity and can store a large load with small deformation. Therefore, during operation, the force generated by its deformation can not only make the injection surface of the pressure plate stick tightly to the guide rail surface, but also maintain the sticking state. It has high stability and does not require frequent adjustment of the pressure plate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a top view of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the elastic clamping mechanism of this utility model along its axial direction;

[0018] Among them, 1-pressure plate seat, 2-piston, 3-pressure plate, 4-fixing component, 5-clamping component, 6-elastic component, 7-preload nut, 8-mounting hole, 9-adjusting shim, 10-screw. Detailed Implementation

[0019] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0020] like Figure 1 and Figure 2 As shown, this utility model discloses a gear hobbing machine guide rail pressure plate locking mechanism, including a pressure plate seat 1, a piston 2 slidably disposed on the pressure plate seat 1, and applying pressure by the piston 2 abutting against the plate surface of the pressure plate 3. An elastic pressing mechanism is disposed on the side of the pressure plate seat 1 away from the pressure plate 3. The elastic pressing mechanism has a fixing member 4 that is relatively fixed to the pressure plate seat 1 and a pressing member 5 for applying pressure to the piston 2. An elastic member 6 is disposed between the fixing member 4 and the pressing member 5, and applies pressure to the pressing member 5 by the elastic member 6.

[0021] To facilitate the transmission of pressure from the elastic element, the clamping element 5 of this invention adopts an inverted T-shaped structure. The upper part of the clamping element 5 is concentrically slidably inserted into the fixing element 4. The stepped surface formed by the change in diameter of the T-shaped structure cooperates with the elastic element 6. The two ends of the elastic element 6 abut against the end face and the stepped surface of the fixing element 4, respectively. The elastic element 6 is a disc spring, which is sleeved on the clamping element 5. The number of disc springs is selected according to the pressure required. The disc springs can not only keep the pressure plate pressed, but also store the load and maintain the pressure plate in a pressed state for a long time.

[0022] The upper end of the clamping member 5 of this utility model adopts a threaded structure. After being inserted into the fixing member 4, the upper end of the clamping member 5 extends above the fixing member 4. A pre-tightening nut 7 is provided on the clamping member 4. When the locking mechanism is installed, the clamping member 5 and the fixing member 4 are first locked and fixed by the pre-tightening nut 7. After the locking mechanism is installed, the pre-tightening nut 7 is removed, thereby realizing the overall assembly and disassembly of the locking mechanism and reducing the assembly difficulty.

[0023] Preferably, the pressure plate seat 1 of this utility model is provided with a mounting hole 8 for installing the elastic clamping mechanism. The lower part of the fixing member 4 passes through the mounting hole 8, and the upper part is provided with an annular protrusion with a diameter larger than the diameter of the mounting hole 8. An adjusting shim 9 is provided on the surface of the annular protrusion near the mounting hole. The pressure applied by the elastic member 6 to the clamping member 5 is adjusted by changing the compression amount of the elastic member 6 by adjusting the height of the adjusting shim 9. The fixing member 4 is fixed to the pressure plate seat 1 by screws 10.

[0024] The elastic element 6 of this utility model adopts a disc spring. The number of disc springs is selected according to the pressure required. After selecting the number of disc springs, the compression of the disc springs and the corresponding clamping force can be calculated. When the working pressure of the disc spring is small, there is a gap between the injection surface of the pressure plate and the guide rail surface. At this time, the height of the adjusting shim can be reduced to move the fixing part down, thereby increasing the pressure. When the working pressure of the disc spring is large, the pressure plate cannot slide on the guide rail surface. At this time, the height of the adjusting shim can be increased or the lower surface of the fixing part can be ground to reduce the pressure.

[0025] The number of elastic locking mechanisms on the pressure plate seat 1 of this utility model is several sets, and the whole is symmetrically arranged about the pressure plate seat 1. According to the size of the pressing area and the pressing force requirement, the overall number and arrangement of the elastic locking mechanisms can be changed to maintain uniform pressing on the object being pressed.

[0026] In use, the locking mechanism of this invention must be assembled beforehand, such as... Figure 2 As shown, the fixing part 4 and the adjusting shim 9 are installed from the top of the pressure plate seat 1. After the disc spring is installed, the clamping part 5 is inserted into the fixing part 4 from below. The clamping part 5 is moved upward by the pre-tightening nut 7, compressing and locking the disc spring. The piston 2 is installed from below the pressure plate seat 1. Then the pressure plate seat 1 is installed and fixed on the pressure plate 3 as a whole. After the fixation is completed, the pre-tightening nut 7 is loosened. The disc spring tends to return to its original state, applying a downward force to the clamping part 5 and generating pressure on the piston 2. Finally, the pressure acts on the pressure plate 3, making the injection surface of the pressure plate tightly adhere to the guide rail surface, thus achieving the adhesion between the injection surface of the pressure plate and the guide rail surface.

Claims

1. A locking mechanism for a guide rail pressure plate of a gear hobbing machine, characterized in that, The device includes a pressure plate seat (1), on which a piston (2) is slidably disposed. Pressure is applied by the piston (2) abutting against the surface of the pressure plate (3). An elastic clamping mechanism is provided on the side of the pressure plate seat (1) away from the pressure plate (3). The elastic clamping mechanism has a fixing member (4) that is relatively fixed to the pressure plate seat (1) and a clamping member (5) for applying pressure to the piston (2). An elastic member (6) is provided between the fixing member (4) and the clamping member (5). Pressure is applied to the clamping member (5) by the elastic member (6).

2. The gear hobbing machine guide rail pressure plate locking mechanism according to claim 1, characterized in that, The clamping member (5) adopts an inverted T-shaped structure. The upper part of the clamping member (5) is concentrically slidably inserted into the fixing member (4). The stepped surface formed by the change in diameter of the T-shaped structure cooperates with the elastic member (6). The two ends of the elastic member (6) abut against the end face and the stepped surface of the fixing member (4) respectively.

3. The gear hobbing machine guide rail pressure plate locking mechanism according to claim 2, characterized in that, The upper end of the clamping member (5) adopts a threaded structure. After it is inserted into the fixing member (4), the upper end of the clamping member (5) extends to the top of the fixing member (4). A pre-tightening nut (7) is set on the clamping member (5). When the locking mechanism is installed, the clamping member (5) and the fixing member (4) are locked and fixed by the pre-tightening nut (7). After the locking mechanism is installed, the pre-tightening nut (7) is removed.

4. The gear hobbing machine guide rail pressure plate locking mechanism according to claim 1, characterized in that, The pressure plate seat (1) is provided with a mounting hole (8) for installing the elastic clamping mechanism. The lower part of the fixing member (4) passes through the mounting hole (8), and the upper part is provided with an annular protrusion with a diameter larger than the hole diameter of the mounting hole (8). An adjusting shim (9) is provided on the surface of the annular protrusion near the mounting hole. The pressure applied by the elastic member (6) to the clamping member (5) is adjusted by changing the compression amount of the elastic member (6) by adjusting the height of the adjusting shim (9).

5. The gear hobbing machine guide rail pressure plate locking mechanism according to claim 4, characterized in that, The fastener (4) is fixed to the pressure plate seat (1) by screws (10).

6. The gear hobbing machine guide rail pressure plate locking mechanism according to claim 1, characterized in that, The elastic element (6) is a disc spring, and the number of disc springs is selected according to the pressure required.

7. The gear hobbing machine guide rail pressure plate locking mechanism according to claim 1, characterized in that, The number of elastic locking mechanisms on the pressure plate seat (1) is several, and the whole is arranged symmetrically about the pressure plate seat (1).

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