Quick locking mechanism for outer support of gear hobbing machine

Abstract

The utility model belongs to the technical field of gear hobbing, and relates to a rapid locking mechanism for an outer support of a gear hobbing machine. The quick locking mechanism comprises a locking shaft which is inserted into and penetrates through the outer support in the mode of rotating around the axis of the locking shaft; the positioning pin is mounted on the surface, close to the outer bracket, of the sliding seat in a manner of sliding along the axial direction of the locking shaft; the axes of the locking shaft and the positioning pin coincide with each other; the locking shaft is cylindrical, a spiral groove matched with the positioning pin in shape is formed in the cylinder wall, close to the sliding base, of the locking shaft, and the locking shaft is rotated so that the positioning pin can be clamped into the spiral groove. The positioning shaft is arranged in the sliding base in the mode of sliding in the axial direction of the locking shaft, and the positioning pin is connected to the end, close to the locking shaft, of the positioning shaft. A stepped hole extending in the axial direction of the locking shaft is formed in the sliding seat, and the positioning shaft is arranged in the stepped hole in a sliding mode. And a spring is sleeved on the positioning shaft. According to the rapid locking mechanism for the outer support of the gear hobbing machine, rapid and firm connection between the outer support and the sliding base is achieved, and assembling and debugging time is greatly saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hobbing machining technical field relates to a kind of quick locking mechanism of outer support of hobbing machine. BACKGROUND

[0002] Hobbing machine is the most widely used in gear machining machine tool, its general structure includes machine tool, workpiece table, tool rest table and operating platform etc..In hobbing machine is mainly used to cut straight teeth, helical tooth cylindrical gear, also can process worm wheel, sprocket etc., is through hobbing to process various gear machines of generation method, with wide processing range, high precision and other characteristics.

[0003] Hobbing machine machining shaft gear and disassembling and assembling large disc gear need to use rotating small column and outer support, small column is connected with the base or bed of hobbing machine, sliding plate is slidably connected on the column guide rail of small column, and outer support is rotatably connected with sliding plate.Top center, fixture or other device for fixing workpiece are arranged on outer support, to ensure the stability and accuracy of workpiece during machining.

[0004] In production process, during disassembling and assembling workpiece or adjusting workpiece, outer support is often opened, and outer support and sliding seat are assembled again after operation is finished.For example, when machining shaft gear workpiece, since workpiece is usually long, and needs to be accurately centered and fixed, therefore, in the state that outer support is opened, workpiece can be placed on workbench more conveniently, and fixed by top center and other devices.After machining is completed, outer support is also opened to take down workpiece.

[0005] If outer support cannot be firmly locked in sliding seat, then it can cause slight shaking or displacement during machining, thereby directly affecting the machining precision of workpiece.If the assembly speed of outer support is too slow, it means that more time is needed to ensure the stable connection between outer support and sliding seat during assembly or adjustment, which undoubtedly increases the time cost of assembly and adjustment, thereby reducing the overall machining efficiency of hobbing machine. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims at providing a kind of quick locking mechanism of outer support of hobbing machine to save assembly and adjustment time, reduce labor intensity and improve assembly efficiency.

[0007] To achieve the above-mentioned purpose, the utility model provides a kind of quick locking mechanism of outer support of hobbing machine, which comprises:

[0008] Locking shaft is inserted and passes through outer support in the form of rotating around its own axis;

[0009] Positioning pin is installed on the surface of sliding seat close to outer support in the form of sliding along the axial direction of locking shaft;

[0010] The axis of the locking shaft and the positioning pin coincide with each other; the locking shaft is cylindrical, and a spiral groove matched with the shape of the positioning pin is formed on the cylinder wall of the locking shaft close to the slide base.

[0011] Optionally, an assembly groove is formed on the surface of the outer support close to the slide base, and the spiral groove is formed on the cylinder wall of the locking shaft in the assembly groove.

[0012] Optionally, the positioning shaft is arranged in the slide base in a sliding manner along the axial direction of the locking shaft, and the positioning pin is connected to the end of the positioning shaft close to the locking shaft.

[0013] Optionally, a stepped hole extending along the axial direction of the locking shaft is arranged in the slide base, and the positioning shaft is arranged in the stepped hole in a sliding manner; a spring is sleeved on the positioning shaft, and the spring is matched with the shaft shoulder of the stepped hole to provide a restoring force for the positioning shaft when the positioning shaft slides.

[0014] Optionally, a rotation-preventing sliding groove extending along the axial direction of the positioning shaft is arranged on the positioning shaft, and a rotation-preventing flat key matched with the rotation-preventing sliding groove is arranged on the stepped hole.

[0015] Optionally, an elastic stop ring and a spring ring are arranged on the end of the positioning shaft close to the locking shaft, and the elastic stop ring and the spring ring are located on the side of the spring close to the locking shaft.

[0016] Optionally, the stepped hole comprises a first hole section, a second hole section and a third hole section, and the hole diameter of the first hole section gradually decreases in the direction away from the outer support.

[0017] Optionally, the elastic stop ring and the spring ring are arranged on the shaft section of the positioning shaft in the first hole section, and the spring is arranged between the first hole section and the second hole section.

[0018] Optionally, the rotation-preventing sliding groove is arranged on the shaft section of the positioning shaft in the third hole section, and the rotation-preventing flat key is arranged on the hole wall of the third hole section.

[0019] Optionally, a rotating handle is arranged on the end face of the locking shaft away from the slide base, and a gasket is arranged between the end face of the locking shaft away from the slide base and the outer support.

[0020] The hobbing machine outer support quick locking mechanism provided by the utility model realizes quick and firm connection of the outer support and the slide base, greatly saves the assembly and debugging time, and thus significantly improves the overall machining efficiency of the hobbing machine.

[0021] The other advantages, objects, and features of the present application will become more apparent in light of the following detailed description of the application. The objects and other advantages of the present application can be realized and attained by means of the instrumentalities and combinations particularly pointed out in the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the objects, technical solutions and advantages of the present application clearer, the following will make a preferred detailed description of the present application in combination with the drawings, in which:

[0023] Figure 1 A cross-sectional view of the quick locking mechanism of the outer support of the gear hobbing machine provided by the present application;

[0024] Figure 2 A structure schematic view of the locking shaft of the quick locking mechanism of the outer support of the gear hobbing machine provided by the present application.

[0025] Reference signs:

[0026] 1 - locking shaft; 1.1 - rotating handle; 1.2 - spiral groove; 1.3 - limiting ring; 2 - washer; 3 - outer support; 4 - positioning pin; 5 - positioning shaft; 5.1 - anti-rotation sliding groove; 6 - spring ring; 7 - elastic stop ring; 8 - spring; 9 - sliding seat; 9.1 - stepped hole; 9.11 - first hole section; 9.12 - second hole section; 9.13 - third hole section; 9.2 - anti-rotation flat key. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail with specific examples. Other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. The present application can also be implemented or applied in different specific embodiments, and each detail in the present specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and the following examples and features in the examples can be combined with each other without conflict.

[0028] It should be noted that the drawings are only used for illustrative explanation, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the present application. In order to better illustrate the embodiments of the present application, some components in the drawings can be omitted, enlarged or reduced, and do not represent the actual size of the product. It can be understood by those skilled in the art that some well-known structures and their descriptions in the drawings can be omitted.

[0029] The same or similar reference signs in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the orientations or position relationships indicated by the terms "upper", "lower", "left", "right", "front", "back" and the like are based on the orientations or position relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation and be operated, therefore, the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0030] Please refer to Figure 1 and Figure 2 In order to save the assembly and debugging time of the outer support and the slide of the gear hobbing machine, reduce the labor intensity and improve the assembly efficiency, the utility model provides a gear hobbing machine outer support quick locking mechanism.

[0031] The quick locking mechanism is used for connecting the outer support 3 and the slide 9 of the gear hobbing machine, which mainly comprises a locking shaft 1 arranged on the outer support 3 and a positioning pin 4 arranged on the slide 9. The locking shaft 1 is inserted into and passes through the outer support 3, and can rotate around its own axis. The positioning pin 4 is installed on the surface of the slide 9 close to the outer support 3, and can slide along the axial direction of the locking shaft 1 to provide a certain axial displacement space for the locking shaft 1 during the rotational engagement of the locking shaft 1 and the positioning pin 4. The axes of the locking shaft 1 and the positioning pin 4 coincide with each other, so that they are on the same assembly horizontal line. The locking shaft 1 is cylindrical, and a spiral groove 1.2 matched with the shape of the positioning pin 4 is formed in the barrel wall close to the slide 9, and the locking shaft 1 is rotated to make the positioning pin 4 engaged into the spiral groove 1.2. The surface of the outer support 3 close to the slide 9 is provided with an assembly groove, and the barrel wall of the locking shaft 1 located in the assembly groove is provided with the spiral groove 1.2, and the positioning pin 4 and the spiral groove 1.2 are rotationally engaged in the assembly groove.

[0032] Further, the slide 9 is provided with a stepped hole 9.1 extending along the axial direction of the locking shaft 1, the stepped hole 9.1 is provided with a positioning shaft 5 sliding along the axial direction of the locking shaft 1, and the positioning pin 4 is connected to the end of the positioning shaft 5 close to the locking shaft 1. The positioning shaft 5 is sleeved with a spring 8, and the spring 8 is matched with the shaft shoulder of the stepped hole 9.1 to provide a reset force for the positioning shaft 5 when it slides. Before the spiral groove 1.2 of the locking shaft 1 and the positioning pin 4 are engaged, the positioning pin 4 and the positioning shaft 5 are axially displaced to the left under the interference of the end face of the locking shaft 1, the spring 8 is compressed, and the positioning pin 4 and the positioning shaft 5 leave a displacement space for the engagement of the spiral groove 1.2 and the positioning pin 4; after the positioning pin 4 is engaged into the spiral groove 1.2, the interference of the end face of the locking shaft 1 to the positioning pin 4 disappears, and under the reset force provided by the spring 8, the positioning pin 4 and the positioning shaft 5 return to the original position, and the positioning pin 4 is firmly engaged in the spiral groove 1.2.

[0033] In some optional embodiments, the end of the positioning shaft 5 close to the locking shaft 1 is provided with an elastic stop ring 7 and a spring collar 6, and the spring 8 is positioned and fixed on the positioning shaft 5 by the elastic stop ring 7 and the spring collar 6 close to the locking shaft 1. The positioning shaft 5 is provided with an anti-rotation sliding groove 5.1 extending along the axial direction of the positioning shaft 5, and the stepped hole 9.1 is provided with an anti-rotation flat key 9.2 matched with the anti-rotation sliding groove 5.1, so as to limit the displacement mode of the positioning shaft 5, that is, the positioning shaft 5 can only move axially and is prevented from being twisted with the rotation of the locking shaft 1.

[0034] In some optional embodiments, the stepped hole 9.1 includes a first hole section 9.11, a second hole section 9.12 and a third hole section 9.13, and the hole diameter of the first hole section 9.11 gradually decreases away from the outer support 3. The elastic stop ring 7 and the spring collar 6 are arranged on the shaft section of the positioning shaft 5 in the first hole section 9.11, and the spring 8 is arranged between the first hole section 9.11 and the second hole section 9.12. The anti-rotation sliding groove 5.1 is arranged on the shaft section of the positioning shaft 5 in the third hole section 9.13, and the anti-rotation flat key 9.2 is arranged on the hole wall of the third hole section 9.13.

[0035] In some optional embodiments, the locking shaft 1 is sleeved with a limiting collar 1.3, and the limiting collar 1.3 is arranged on the locking shaft 1 close to the bottom of the assembly groove of the sliding seat 9 in the cross section, so as to limit the axial movement of the locking shaft 1, ensure that the locking shaft 1 only rotates in the sliding seat 9, and ensure the stability of the locking shaft 1 in the predetermined position in the sliding seat 9, and prevent the locking shaft 1 from moving axially unexpectedly.

[0036] In some optional embodiments, the spring 8 on the positioning shaft 5 is a cylindrical helical compression spring, the end of the locking shaft 1 away from the sliding seat 9 is provided with a rotating handle 1.1, and the end of the locking shaft 1 away from the sliding seat 9 is provided with a gasket 2 between the locking shaft 1 and the outer support 3.

[0037] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A quick locking mechanism of an outer support of a gear hobbing machine, characterized in that: The utility model relates to a locking shaft (1) is inserted and passes through the outer support (3) in the mode of rotating around the own axis, the positioning pin (4) is installed in the surface of slide (9) near the outer support (3) in the mode of sliding along the axial direction of locking shaft (1), the axis of locking shaft (1) and positioning pin (4) coincide with each other, locking shaft (1) is cylindrical, and the spiral groove (1.2) that cooperates with the shape of positioning pin (4) is set up on the cylinder wall near slide (9), and rotating locking shaft (1) makes positioning pin (4) be clamped into spiral groove (1.2). The surface of outer support (3) near slide (9) is provided with an assembly groove, and the cylinder wall of locking shaft (1) in the assembly groove is provided with spiral groove (1.2). The positioning shaft (5) is arranged in the slide (9) in the mode of sliding along the axial direction of locking shaft (1), and the positioning pin (4) is connected to the end of positioning shaft (5) near locking shaft (1). The slide (9) is provided with a stepped hole (9.1) extending along the axial direction of locking shaft (1), and the positioning shaft (5) is slidingly arranged in the stepped hole (9.1); a spring (8) is sleeved on the positioning shaft (5), and the spring (8) cooperates with the shaft shoulder of the stepped hole (9.1) to provide a restoring force for the positioning shaft (5) when the positioning shaft (5) slides.

2. The quick locking mechanism of the gear hobbing machine outer support according to claim 1, characterized in that: The positioning shaft (5) is provided with an anti-rotation sliding groove (5.1) extending along the axial direction thereof, and the stepped hole (9.1) is provided with an anti-rotation flat key (9.2) cooperating with the anti-rotation sliding groove (5.1).

3. The quick locking mechanism of the gear hobbing machine outer support according to claim 1, characterized in that: The end of the positioning shaft (5) near the locking shaft (1) is provided with an elastic retaining ring (7) and a spring retaining ring (6), and the elastic retaining ring (7) and the spring retaining ring (6) are located on the side of the spring (8) near the locking shaft (1).

4. The quick locking mechanism of the gear hobbing machine outer support according to claim 3, characterized in that: The stepped hole (9.1) comprises a first hole section (9.11), a second hole section (9.12), and a third hole section (9.13) with gradually decreasing hole diameters in the direction away from the outer support (3).

5. The quick locking mechanism of the gear hobbing machine outer support according to claim 4, characterized in that: The positioning shaft (5) is provided with the elastic retaining ring (7) and the spring retaining ring (6) on the shaft section of the first hole section (9.11), and the spring (8) is arranged between the first hole section (9.11) and the second hole section (9.12).

6. The quick locking mechanism of the gear hobbing machine outer support according to claim 5, characterized in that: The positioning shaft (5) is provided with the anti-rotation sliding groove (5.1) on the shaft section of the third hole section (9.13), and the anti-rotation flat key (9.2) is arranged on the hole wall of the third hole section (9.13).

7. The quick locking mechanism of the gear hobbing machine outer support according to claim 6, characterized in that: The end of the locking shaft (1) away from the slide (9) is provided with a rotating handle (1.1), and a gasket (2) is arranged between the end of the locking shaft (1) away from the slide (9) and the outer support (3).

8. The gear hobbing machine outer support quick locking mechanism according to claim 7, characterized in that: ​ 9. The quick locking mechanism of the gear hobbing machine outer support according to claim 7, characterized in that: ​ 10. The quick locking mechanism of the gear hobbing machine outer support according to claim 1, characterized in that: ​

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