Workpiece auxiliary positioning device for combined tooth back taper machining

Abstract

The utility model discloses a workpiece auxiliary positioning device for combined tooth back taper processing, which comprises a lower die holder, a plurality of combined tooth processing tooth sheets are distributed on the top surface of the lower die holder in a row shape, and air tightness detection blocks supported on the plurality of combined tooth processing tooth sheets are arranged on the inner sides of the plurality of combined tooth processing tooth sheets. The top of the air tightness detection block is provided with an air tightness detection surface which is matched with a horizontal reference surface on a workpiece to be processed for air tightness detection, the air tightness detection block is internally provided with an air cavity, the air tightness detection block is provided with at least three detection air channels, one end of each detection air channel is communicated with the air cavity, and the other end of each detection air channel extends to the air tightness detection surface; an air pipe connecting hole communicated with the air cavity and used for connecting an air pipe is formed in the bottom of the air tightness detection block; and an air pipe penetrating hole is formed in the lower die holder below the air pipe connecting hole. The device is simple in structure, and realizes the rapid detection of the position of the workpiece through the airtightness detection between the device and the horizontal reference surface of the workpiece after machining.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a workpiece auxiliary positioning device for machining combined toothed tapered teeth. Background Technology

[0002] The tapering of mating gears (cross-axis helical gears or spiral bevel gears) is a special manufacturing process used to ensure that the gears achieve an ideal contact pattern and load distribution during operation. The tapering refers to a slight conical design at the tip of the gear teeth, intended to compensate for assembly errors, thermal expansion, and elastic deformation during operation, thereby ensuring good meshing quality throughout the gear's service life. During the tapering of mating gears, the workpiece needs to be placed and fixed on several machined gear plates. Because impurities may exist on the workpiece or the machined gear plates, these impurities may prevent proper contact between the workpiece and the gear plates. Alternatively, dimensional deviations in the workpiece's positioning reference surface may also prevent proper contact with the gear plates, resulting in a slight tilt of the workpiece. Such workpieces will have serious quality problems in the machined gears. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a workpiece auxiliary positioning device for machining combined toothed conical teeth, which is convenient for positioning and detecting the relative position of the workpiece and the machining toothed plate.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A workpiece auxiliary positioning device for machining tapered teeth includes a lower mold base. A plurality of machining teeth are arranged in a horizontal circular array on the top surface of the lower mold base. An airtightness detection block is provided on the inner side of the circle formed by the array of machining teeth, supported on the machining teeth. The top of the airtightness detection block has an airtightness detection surface for airtightness detection in conjunction with a horizontal reference surface on the workpiece to be machined. The airtightness detection surface is horizontal. An air cavity is provided inside the airtightness detection block. At least three detection air passages are provided on the airtightness detection block. One end of each detection air passage communicates with the air cavity, and the other end extends to the airtightness detection surface. An air pipe connection hole, communicating with the air cavity and used for connecting an air pipe, is provided at the bottom of the airtightness detection block. An air pipe through hole is provided on the lower mold base below the air pipe connection hole.

[0006] In this invention, after the workpiece is placed on several mating toothed plates, the horizontal reference surface of the workpiece after machining can mate with the airtightness detection surface on the top of the airtightness detection block. This allows for airtightness testing between these two surfaces. An air pipe passes through the air pipe perforation on the lower mold base and connects to the air pipe connection hole. Air is supplied through the air pipe, and the pressure inside the air chamber is measured. Only when the pressure reaches a specified value, and the gap between the horizontal reference surface of the workpiece and the airtightness detection surface meets the corresponding tolerance requirements, can the principle of three points determining the plane be applied. This indicates that the workpiece is placed on the mating toothed plates and is flush with them, indicating a horizontal position suitable for tapered machining. If the pressure test does not reach the specified value, resulting in air leakage, the workpiece is not placed horizontally on the mating toothed plates and is tilted. In this case, it is necessary to check the workpiece position or the workpiece's dimensions.

[0007] As an optimization, the top protrusion of the airtightness detection block is formed with at least three evenly spaced protrusions arranged around the center line of a circle formed by the array of several meshing toothed plates, and the airtightness detection surface is located on the top surface of the protrusions. This reduces the contact area with the workpiece and minimizes errors.

[0008] As an optimization, the inner sides of the plurality of meshing toothed plates and the outer sides of their corresponding airtightness detection blocks are provided with interlocking protrusions and recesses for positioning the airtightness detection block by rotating it around the center line of the circumference formed by the array of the plurality of meshing toothed plates.

[0009] As an optimization, an upper mold base and a driving device for moving the upper mold base vertically are provided above the lower mold base. A workpiece clamping plate is provided between the several gear teeth and the upper mold base. The bottom surface of the workpiece clamping plate is a horizontally positioned clamping surface. A compression spring is provided between the workpiece clamping plate and the upper mold base, with both ends of the compression spring fixedly connected to the workpiece clamping plate and the upper mold base, respectively. The compression spring can be compressed vertically. By clamping the workpiece, the accuracy of airtightness testing is improved.

[0010] As an optimization, a layer of elastic rubber skin is adhered to the pressing surface.

[0011] Compared with existing technologies, this utility model has a simple structure. By detecting the airtightness between the workpiece and the horizontal reference surface after machining, it can quickly detect the position of the workpiece, effectively assisting in the positioning and machining of the workpiece and improving the machining quality of the workpiece. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the present invention. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0015] like Figure 1As shown, the workpiece auxiliary positioning device for machining the inverted cone of the gear teeth in this specific embodiment includes a lower mold base 1. Several gear teeth 2 are arranged in a horizontal circular array on the top surface of the lower mold base 1. An airtightness detection block 3 supported on the gear teeth 2 is arranged on the inner side of the circle formed by the array of several gear teeth 2. An airtightness detection surface is arranged on the top of the airtightness detection block 3 for airtightness detection between it and the horizontal reference surface on the workpiece to be processed. The airtightness detection surface is a horizontal surface. An air cavity 4 is arranged inside the airtightness detection block 3. At least three detection air channels 5 are arranged on the airtightness detection block 3. One end of the detection air channel 5 is connected to the air cavity 4, and the other end extends to the airtightness detection surface. An air pipe connection hole 6 is arranged at the bottom of the airtightness detection block 3, which is connected to the air cavity 4 and is used to connect an air pipe. An air pipe through hole 7 is provided on the lower mold base 1 below the air pipe connection hole 6.

[0016] In this specific embodiment, the top protrusion of the airtightness detection block is formed with at least three evenly spaced protrusions arranged around the center line of the circumference formed by the array of several of the combined tooth processing plates, and the airtightness detection surface is located on the top surface of the protrusions.

[0017] In this specific embodiment, the inner sides of the plurality of meshing toothed plates 2 and the outer sides of their corresponding airtightness detection blocks 3 are provided with interlocking protrusions and recesses, which are used to position the airtightness detection blocks 3 by rotating them around the center line of the circumference formed by the array of the plurality of meshing toothed plates 2.

[0018] In this specific embodiment, an upper mold base 8 and a driving device for driving the upper mold base 8 to move vertically are provided above the lower mold base 1. A workpiece clamping plate 9 is provided between a plurality of the gear teeth 2 and the upper mold base 8. The bottom surface of the workpiece clamping plate 9 is a horizontally arranged clamping surface. A compression spring 10 is provided between the workpiece clamping plate 9 and the upper mold base 8. The two ends of the compression spring 10 are fixedly connected to the workpiece clamping plate 9 and the upper mold base 8, respectively. The compression spring 10 can be compressed in the vertical direction.

[0019] In this specific embodiment, an elastic rubber sheet is adhered to the pressing surface.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail can be made without departing from the spirit and scope of this utility model as defined in the appended claims.

Claims

1. A workpiece auxiliary positioning device for machining tapered teeth, comprising a lower die base, wherein a plurality of machining teeth plates for machining teeth are arranged in a horizontal circular array on the top surface of the lower die base, characterized in that: An airtightness detection block is provided on the inner side of the circumference formed by an array of several meshing tooth processing plates. The top of the airtightness detection block is provided with an airtightness detection surface for airtightness detection in conjunction with the horizontal reference surface on the workpiece to be processed. The airtightness detection surface is a horizontal surface. An air cavity is provided inside the airtightness detection block. At least three detection air channels are provided on the airtightness detection block. One end of the detection air channel is connected to the air cavity, and the other end extends to the airtightness detection surface. An air pipe connection hole is provided at the bottom of the airtightness detection block, which is connected to the air cavity and is used to connect an air pipe. An air pipe through hole is provided on the lower mold base below the air pipe connection hole.

2. The workpiece auxiliary positioning device for machining toothed tapered teeth according to claim 1, characterized in that: The top protrusion of the airtightness detection block is formed with at least three evenly spaced protrusions arranged around the center line of the circumference formed by the array of several of the combined tooth processing plates, and the airtightness detection surface is located on the top surface of the protrusions.

3. The workpiece auxiliary positioning device for machining toothed tapered teeth according to claim 1, characterized in that: The inner sides of the plurality of meshing toothed plates and the outer sides of their corresponding airtightness detection blocks are provided with interlocking protrusions and recesses for positioning the airtightness detection blocks by rotating them around the center line of the circumference formed by the array of the plurality of meshing toothed plates.

4. The workpiece auxiliary positioning device for machining toothed tapered teeth according to claim 1, characterized in that: An upper mold base and a driving device for driving the upper mold base to move vertically are provided above the lower mold base. A workpiece clamping plate is provided between the combined gear processing teeth and the upper mold base. The bottom surface of the workpiece clamping plate is a horizontally arranged clamping surface. A compression spring is provided between the workpiece clamping plate and the upper mold base. The two ends of the compression spring are fixedly connected to the workpiece clamping plate and the upper mold base respectively. The compression spring can be compressed in the vertical direction.

5. The workpiece auxiliary positioning device for machining toothed tapered teeth according to claim 4, characterized in that: A layer of elastic rubber is bonded to the pressing surface.

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