A hobbing clamping tool and method

Abstract

The application relates to the mechanical field, in particular to a gear hobbing clamping tool and method, and discloses a gear hobbing clamping tool which is characterized by comprising: a jig, the jig comprising: a base, the base being arranged on a workbench; a mandrel, the mandrel being arranged on the base; a pressing plate, the pressing plate being arranged on the jig; a locking device, the locking device comprising: a hydraulic sleeve, the hydraulic sleeve being arranged on the pressing plate; an adjusting screw, the adjusting screw being arranged in the hydraulic sleeve; a fixing nut, the fixing nut being arranged outside the hydraulic sleeve; the adjusting screw arranged around the hydraulic sleeve is tightened to make the hydraulic sleeve expand and generate a tensioning force, and the hydraulic sleeve and the fixing nut arranged on the hydraulic sleeve are fixed. The gear is clamped by lifting a force rod and cooperating with a wrench, the force rod is prone to falling off and causes a safety hidden danger, the gear can be conveniently clamped, and the safety hidden danger is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the mechanical field, especially relates to a hobbing clamping tool and method. BACKGROUND

[0002] The prior art in the processing of hobbing, the tool used is placed on the workbench, then the gear is placed on the jig and fixed on the mandrel, then the pressure plate washer is added on the gear, finally the ball head nut is tightened, and the gear is clamped by using the force rod.

[0003] But because the hands are easy to have more oil when processing on site, it is easy to slip off, and the height of the tool after being placed on the workbench is higher, when clamping by using the force rod and wrench, the force rod needs to be held high to clamp, and the force rod is easy to fall off, which causes safety hazards.

[0004] In view of the above background, we need a hobbing clamping tool and method, which can solve the problem that the force rod needs to be held high to clamp the gear with the wrench, and the force rod is easy to fall off, which causes safety hazards. SUMMARY

[0005] The purpose of the present application is to provide a hobbing clamping tool and method, which can solve the problem that the force rod needs to be held high to clamp the gear with the wrench, and the force rod is easy to fall off, which causes safety hazards.

[0006] To achieve the above purpose, the embodiments of the present application adopt the following technical scheme: a hobbing clamping tool, characterized in that it comprises: a jig, the jig comprising: a base, the base being arranged on a workbench, the base being provided with a fixing hole at the bottom and a disc at the top, and a cylinder being arranged between the fixing hole and the disc to connect them, the disc being used for placing a workpiece; a mandrel, the mandrel being arranged on the base, one end of the mandrel being connected to the center of the base, the mandrel being used for positioning the workpiece; a pressure plate, the pressure plate being arranged on the jig, the pressure plate being annular, and the inner circle of the pressure plate being in contact with the surface of the mandrel; a locking device, the locking device comprising: a hydraulic sleeve, the hydraulic sleeve being arranged on the pressure plate, the hydraulic sleeve being provided with a through hole at the center, the size of the through hole corresponding to that of the mandrel; an adjusting screw, the adjusting screw being arranged in the hydraulic sleeve, the adjusting screw being used for locking control; a fixing nut, the fixing nut being arranged outside the hydraulic sleeve, the fixing nut being annular, and the inner circle of the fixing nut being in contact with the outer surface of the hydraulic sleeve; the hydraulic sleeve locks the workpiece through cooperation with the fixing nut and the mandrel, the mandrel is inserted into the through hole of the hydraulic sleeve, the hydraulic sleeve can move up and down along the mandrel, the bottom end of the hydraulic sleeve is in contact with the pressure plate, the fixing nut is arranged outside the hydraulic sleeve, and the bottom surface of the fixing nut is in contact with the hydraulic sleeve, the adjusting screw is tightened to control the hydraulic oil in the hydraulic sleeve, so that the hydraulic sleeve expands to generate a tightening force, and the fixing nut and the mandrel lock the workpiece fixed by the hydraulic sleeve.

[0007] Further, according to the embodiments of the present application, the base is a plurality of cylinders stacked.

[0008] Further, according to the embodiment of the present application, the base fixing hole is provided with six holes.

[0009] Further, according to the embodiment of the present application, the mandrel is a cylinder.

[0010] Further, according to the embodiment of the present application, the hydraulic sleeve is composed of two cylinders, and the adjusting screw is arranged in the lower cylinder.

[0011] Further, according to the embodiment of the present application, the adjusting screw has two adjusting screws.

[0012] Further, according to the embodiment of the present application, the hydraulic sleeve is filled with hydraulic oil.

[0013] Further, according to the embodiment of the present application, the fixing nut is a circular ring, and the height of the fixing nut is the same as the upper cylinder of the hydraulic sleeve.

[0014] In order to achieve the above purpose, the embodiment of the present application further discloses a hobbing clamping method, comprising the following steps:

[0015] Placing step: placing the jig on the workbench, fixing the jig on the workbench through the base fixing hole, placing the workpiece on the top surface of the base through the mandrel, and placing the upper pressing plate on the workpiece through the mandrel;

[0016] Installation step: passing the hole in the center of the gasket through the mandrel and attaching it to the upper pressing plate, then inserting the hydraulic sleeve into the mandrel, passing the mandrel through the hydraulic sleeve, and tightly attaching the bottom of the mandrel to the gasket, and finally placing the fixing nut on the upper cylinder of the hydraulic sleeve and tightly attaching the inner wall of the fixing nut to the hydraulic sleeve;

[0017] Clamping step: by tightening the adjusting screw arranged around the hydraulic sleeve, the hydraulic sleeve is inflated to generate a tightening force, and the tightening force is applied to the fixing nut and the mandrel to complete the clamping of the fixing nut and the mandrel;

[0018] Blanking step: by loosening the adjusting screw arranged around the hydraulic sleeve, the hydraulic sleeve does not generate a tightening force, and the above steps are followed to blank.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The application adopts a hobbing clamping tool and method, the gasket is attached to the upper pressing plate through the mandrel, the hydraulic sleeve is passed through the mandrel, the bottom of the hydraulic sleeve is attached to the gasket, the fixing nut is placed on the upper cylinder of the hydraulic sleeve, the inner wall of the fixing nut is attached to the hydraulic sleeve, the adjusting screw arranged around the hydraulic sleeve is tightened, the hydraulic sleeve is inflated to generate a tensioning force, the tensioning force is applied to the fixing nut and the mandrel, the fixing nut and the mandrel fixed column are clamped, the contact area between the hydraulic sleeve and the gasket is larger, the generated pressure is larger, and the workpiece is more stable during processing, the problem that the force rod is easily detached to cause a safety hazard during clamping of the gear by using the force rod and the wrench is solved, the gear is conveniently clamped, and the safety hazard is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below in combination with the drawings and examples.

[0022] Fig. 1 It is a three-dimensional schematic view of the embodiment of the hobbing clamping tool.

[0023] Fig. 2 It is a structural schematic view of the embodiment of the hobbing clamping tool.

[0024] Fig. 3 It is a structural schematic view of the locking device.

[0025] Fig. 4 It is a structural schematic view of the hydraulic nut locking device.

[0026] Fig. 5 It is a structural schematic view of the hydraulic nut.

[0027] Fig. 6 It is a three-dimensional schematic view of the hydraulic nut.

[0028] IN THE DRAWINGS

[0029] 1, fixture 11, base 12, pressing plate

[0030] 13, mandrel

[0031] 2, locking device 21, gasket 22, hydraulic sleeve

[0032] 23, fixing nut 24, adjusting screw 25, hydraulic nut

[0033] 251, upper shell 252, lower shell 253, pressing ring

[0034] 254, fastening screw 255, pressing screw 256, pressure indicator

[0035] 3, workpiece DETAILED DESCRIPTION

[0036] In order to make the purposes, technical solutions of the present application clear, complete and the advantages more clear and apparent, the embodiments of the present application are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present application, rather than all the embodiments, and are only used to explain the embodiments of the present application, and are not used to limit the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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 communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are presented to provide a thorough understanding of the embodiments. However, it is obvious that these embodiments can not be limited to these specific details in practice. In some examples, well-known methods and structures are not described in detail to avoid unnecessarily complicating these embodiments. In addition, all embodiments can be used in combination with each other.

[0040] Embodiment one:

[0041] As Figs. 1-3As shown, the present application discloses a hobbing clamping tool, characterized in that, comprising: a jig 1, the jig 1 comprises: a base 11, the base 11 is arranged on the workbench, the bottom of the base 11 is provided with a fixing hole, the top is provided with a disc, and a cylinder is arranged between the fixing hole and the disc to connect them, and the disc is used for placing a workpiece 3; a mandrel 13, the mandrel 13 is arranged on the base 11, one end of the mandrel 13 is connected to the center of the base 11, and the mandrel 13 is used for positioning the workpiece 3; a pressing plate 12, the pressing plate 12 is arranged on the jig 1, the pressing plate 12 is annular, and the inner circle of the pressing plate 12 is attached to the surface of the mandrel 13; a locking device 2, the locking device 2 comprises: a hydraulic sleeve 22, the hydraulic sleeve 22 is arranged on the pressing plate 12, and the center of the hydraulic sleeve 22 is provided with a through hole, the size of the through hole corresponds to the mandrel 13; an adjusting screw 24, the adjusting screw 24 is arranged in the hydraulic sleeve 22, and the adjusting screw 24 is used for locking control; a fixed nut 23, the fixed nut 23 is arranged outside the hydraulic sleeve 22, the fixed nut 23 is annular, the inner circle of the fixed nut 23 is attached to the outer surface of the hydraulic sleeve 22; the hydraulic sleeve 22 locks the workpiece 3 by cooperating with the mandrel 13 and the fixed nut 23, the mandrel 13 is inserted into the through hole of the hydraulic sleeve 22, the hydraulic sleeve 22 can move up and down along the mandrel 13, the bottom end of the hydraulic sleeve 22 is attached to the pressing plate 12, the fixed nut 23 is arranged outside the hydraulic sleeve 22, and the bottom surface of the fixed nut 23 is attached to the hydraulic sleeve 22, the adjusting screw 24 is tightened to control the hydraulic oil in the hydraulic sleeve 22, the hydraulic sleeve 22 expands to generate a tightening force, and the fixed nut 23 and the mandrel 13 lock the workpiece 3 fixed by the hydraulic sleeve 22.

[0042] The base 11 is a stack of three cylinders, the jig 1 is fixed on the workbench by installing screws in the six fixing holes in the through bottom of the base 11, and the base 11 is formed by stacking three cylinders; the mandrel 13 is a cylinder, one end of the mandrel 13 is connected to the top surface of the base 11, and the mandrel 13 is arranged in a concentric circle with the base 11.

[0043] The gasket 21 is arranged between the locking device 2 and the pressing plate 12, the gasket 21 is circular, and provides a certain buffer when locking in a rectangular shape and applies a mutual force on the locking device 2 and the pressing plate 12, so that the workpiece 3 is locked more firmly.

[0044] The hydraulic sleeve 22 is composed of two cylinders, the adjusting screw 24 is arranged on the lower cylinder, and the adjusting screw 24 has two; the hydraulic sleeve 22 is provided with a cavity, the cavity is provided with hydraulic oil, and the expansion and recovery of the hydraulic sleeve 22 can be controlled by adjusting the adjusting screw 24;

[0045] The fixed nut 23 is a circular ring, the height of the fixed nut 23 is the same as that of the upper cylinder of the hydraulic sleeve 22, the fixed nut is arranged outside the hydraulic sleeve 22, the inner circle of the fixed nut is attached to the outer side of the upper cylinder of the hydraulic sleeve 22, and the bottom is attached to the lower cylinder of the hydraulic sleeve 22.

[0046] The locking device 2 locks the workpiece 3 by cooperating with the hydraulic sleeve 22, fixing nut 23, and mandrel 13. The mandrel 13 is inserted into the through hole of the hydraulic sleeve 22, allowing the hydraulic sleeve 22 to move up and down along the mandrel 13. Its bottom end is in contact with the pressure plate 12. The fixing nut 23 is placed on the outside of the hydraulic sleeve 22, with its bottom surface in contact with the hydraulic sleeve 22. By tightening the adjusting screw 24, the hydraulic oil inside the hydraulic sleeve 22 is controlled to accumulate and expand, causing the hydraulic sleeve 22 to expand and generate tension force. The fixing nut 23 and mandrel 13 are locked and fixed by the hydraulic sleeve 22, and a mutual force is formed with the washer 21, further clamping the workpiece 3. The larger the contact area between the hydraulic sleeve 22 and the washer 21, the greater the pressure generated, and the more stable the workpiece 3 is during processing. This achieves the effect of conveniently clamping gears and preventing safety hazards.

[0047] Example 2:

[0048] like Figs. 4-6 As shown, based on Embodiment 1, the fixing nut 23 is replaced with a hydraulic nut 25, and the locking device 2 further includes: a hydraulic nut 25. The hydraulic nut 25 is cylindrical with a threaded hole in the middle. The hydraulic nut 25 also includes: an upper shell 251, which has notches around its perimeter, and a pressure screw 255 and a pressure indicator 256 are provided in the notches; there are three pressure screws 255, and the clamping and loosening are controlled by rotating the pressure screws 255; the pressure indicator 256 is used to display the current state of the hydraulic nut 25, and when the pressure indicator 256 protrudes, it indicates that it is in a clamped state, and vice versa. A lower shell 252 is located below the upper shell 251, and has a groove below it, in which a clamping ring 253 is placed; a fastening screw 254 is provided on the edge of the clamping ring 253, and the clamping ring 253 is fixed by the fastening screw 254.

[0049] When clamping is required, the hydraulic nut 25 is inserted into the hydraulic sleeve 22, ensuring its inner side is flush against the sleeve. After the hydraulic sleeve 22 expands, the pressure screw 255 is tightened, causing the hydraulic nut 25's clamping ring 253 to move towards the bottom of the hydraulic sleeve 22, generating a downward force to further clamp the workpiece 3. The combined use of the hydraulic sleeve 22 and the hydraulic nut 25 facilitates gear clamping and prevents potential safety hazards.

[0050] Example 3:

[0051] This application also discloses a gear hobbing clamping method, including the following steps:

[0052] Placement steps: Place the jig 1 on the workbench, fix the jig 1 on the workbench through the fixing hole of the base 11, place the workpiece 3 through the mandrel 13 on the top surface of the base 11, and place the upper pressure plate 12 through the mandrel 13 on the workpiece 3.

[0053] Installation step: the hole in the center of the gasket 21 is passed through the mandrel 13, and is attached to the upper pressing plate 12, then the hydraulic sleeve 22 is inserted into the mandrel 13, the mandrel 13 is passed through the hydraulic sleeve 22, and the bottom of the mandrel 13 is attached to the gasket 21, finally the fixing nut 23 is placed on the upper cylinder of the hydraulic sleeve 22, and the inner wall of the fixing nut 23 is attached to the hydraulic sleeve 22;

[0054] Clamping step: by tightening the adjusting screw 24 arranged around the hydraulic sleeve 22, the hydraulic sleeve 22 is inflated to generate a tightening force, the tightening force is applied to the fixing nut 23 and the mandrel 13, and the clamping of the fixing nut 23 and the mandrel 13 is completed;

[0055] Blanking step: by loosening the adjusting screw 24 arranged around the hydraulic sleeve 22, the hydraulic sleeve 22 does not generate a tightening force, and the blanking is carried out according to the above steps.

[0056] Although the above describes the specific embodiments of the present application in order to facilitate the understanding of the present application by those skilled in the art, the present application is not limited to the scope of the specific embodiments, and for those skilled in the art, all applications created by utilizing the concept of the present application are within the protection scope of the present application as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims.

Claims

1. A gear hobbing clamping fixture, characterized in that, include: The fixture, comprising: A base is provided on a workbench. The base has a fixing hole at the bottom and a disc at the top. A cylinder is provided between the bottom of the base and the disc for connection. The disc is used to place the workpiece. A mandrel is disposed on the base, one end of which is connected to the center of the base, and the mandrel is used to position the workpiece; A pressure plate is disposed on the fixture. The pressure plate is annular, and its inner circle is in contact with the surface of the mandrel. Locking device, the locking device comprising: A hydraulic sleeve is disposed on the pressure plate, and a through hole is provided in the center of the hydraulic sleeve, the size of which corresponds to the mandrel; An adjusting screw is disposed within the hydraulic sleeve and is used for locking control. A fixing nut is provided on the outside of the hydraulic sleeve. The fixing nut has a ring structure, and its inner circle fits against the outer surface of the hydraulic sleeve. The hydraulic sleeve locks the workpiece in place through the cooperation of the fixing nut and the mandrel. The mandrel is inserted into the through hole of the hydraulic sleeve, and the hydraulic sleeve can move up and down along the mandrel, so that its bottom end is in contact with the pressure plate. The fixing nut is placed on the outside of the hydraulic sleeve and its bottom surface is in contact with the hydraulic sleeve. By tightening the adjusting screw, the hydraulic oil in the hydraulic sleeve is controlled, so that the hydraulic sleeve expands and generates tension force. The fixing nut and the mandrel are locked and fixed to the workpiece by the hydraulic sleeve. The hydraulic sleeve consists of an upper cylinder and a lower cylinder, and the adjusting screw is located inside the lower cylinder.

2. The gear hobbing clamping fixture according to claim 1, characterized in that, The base is composed of multiple stacked cylinders.

3. The gear hobbing clamping fixture according to claim 2, characterized in that, The base has six fixing holes.

4. The gear hobbing clamping fixture according to claim 1, characterized in that, The mandrel is cylindrical.

5. The gear hobbing clamping fixture according to claim 1, characterized in that, There are two adjusting screws.

6. The gear hobbing clamping fixture according to claim 1, characterized in that, The hydraulic sleeve contains hydraulic oil.

7. The gear hobbing clamping fixture according to claim 1, characterized in that, The fixing nut is a ring.

8. A gear hobbing clamping method, based on a gear hobbing clamping fixture according to any one of claims 1-7, characterized in that, Includes the following steps: Placement steps: Place the fixture on the workbench, fix the fixture on the workbench through the base fixing holes, place the workpiece through the mandrel on the top surface of the base, and place the pressure plate through the mandrel on the workpiece; Installation steps: Pass the mandrel through the hole set in the center of the washer and attach it to the pressure plate. Then, put the hydraulic sleeve on the outer surface of the mandrel so that the mandrel passes through the hydraulic sleeve and the bottom of the hydraulic sleeve is close to the washer. Finally, place the fixing nut on the upper cylinder of the hydraulic sleeve and make the inner wall of the fixing nut close to the hydraulic sleeve. Clamping step: By tightening the adjusting screws around the hydraulic sleeve, the hydraulic sleeve expands to generate tension force, which applies tension force to the fixing nut and the mandrel, so that the fixing nut and the fixing post of the mandrel are clamped. Material feeding steps: Loosen the adjusting screws around the hydraulic sleeve to retract the hydraulic sleeve, and feed the material according to the steps described above.

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