Hob jump auxiliary adjusting device

Abstract

The utility model discloses a hob jump auxiliary adjusting device which comprises an adjusting base, installation faces are arranged on the two sides of the adjusting base respectively, and installation shaft holes are formed in the positions, located on the installation faces, of the adjusting base in a penetrating mode. Wherein a plurality of adjusting holes are evenly formed in the outer side of the mounting shaft hole in the mounting face on one side at intervals in the direction of the center line of the mounting shaft hole, adjusting holes are formed in the positions, corresponding to the adjusting holes, of the circumferential face, in the direction of the center line of the mounting shaft hole, of the adjusting base, and the adjusting holes communicate with one another. An adjusting column is arranged in the adjusting hole, the adjusting column is in sliding fit with the adjusting hole, an adjusting column which can move in the direction of the center line of the adjusting hole and can be locked and fixed together with the adjusting base is arranged in the adjusting hole, and the inner side end of the adjusting column extends into the adjusting hole; the lower end of the adjusting column and the inner side end of the adjusting column are matched together in a wedge shape, and the upper end of the adjusting column can extend out of the adjusting hole through movement of the adjusting column.

Description

Technical Field

[0001] This utility model relates to hob installation fixtures, specifically to a hob cutter runout auxiliary adjustment device. Background Technology

[0002] In the field of machining, the hobbing device is a core component in gear machining, and its installation accuracy directly affects the machining quality of the gears. Existing hobbing devices typically employ an assembly structure consisting of a hob shaft, spacers, hobs, and locking nuts. Multiple hobs are arranged at intervals via spacers and secured by nuts. Due to inherent machining errors and assembly clearances, the hobs are prone to radial runout exceeding tolerances during high-speed rotation, leading to problems such as decreased gear machining accuracy and abnormal tool wear.

[0003] Currently, the industry commonly uses the shim compensation method for radial runout correction. This involves manually adding metal shims between different spacers after detecting runout deviation to adjust the axial position of the hob. This method has several technical drawbacks: First, the correction process requires repeated disassembly and reassembly of the tool assembly, necessitating re-detection of the runout value after each adjustment, resulting in low debugging efficiency. Second, the selection of shim thickness relies heavily on operator experience, making precise fine-tuning difficult and often requiring multiple trials to meet tolerance requirements. Third, traditional metal shims have limited thickness specifications (commonly 0.1mm or 0.2mm) and insufficient surface flatness, easily causing stress concentration on the contact surface and affecting assembly stability. With the increasing demand for high-precision gear machining, existing correction methods are no longer sufficient to meet the requirements of modern intelligent manufacturing in terms of adjustment accuracy, ease of operation, and process stability. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a hob runout auxiliary adjustment device that can achieve efficient and accurate correction of hob radial runout, while improving assembly stability and ease of operation.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A hob cutter skid-off adjustment device includes an adjustment base with parallel mounting surfaces on both sides. A mounting shaft hole is provided on the adjustment base at a position on the mounting surface, with the center line of the mounting shaft hole perpendicular to the mounting surface. The adjustment base can be sleeved on the hob cutter shaft through the mounting shaft hole and is drively connected to the hob cutter shaft. On one side of the mounting surface, outside the mounting shaft hole, several adjustment holes are provided at even intervals around the center line of the mounting shaft hole. The center line of the adjustment holes is parallel to the center line of the mounting shaft hole. Adjustment holes are provided on the circumferential surface in the linear direction, corresponding to the positions of each adjustment hole. The adjustment holes extend radially along the mounting shaft hole and communicate with the adjustment holes. An adjustment post is provided inside the adjustment hole. The adjustment post can slide and engage with the adjustment hole along the center line direction. An adjustment post is provided inside the adjustment hole that can move along the center line direction of the adjustment hole and can be locked and fixed together with the adjustment base. The inner end of the adjustment post extends into the adjustment hole. The lower end of the adjustment post and the inner end of the adjustment post are wedge-shaped and engaged. The upper end of the adjustment post can be extended out of the adjustment hole by moving the adjustment post.

[0007] In use, this utility model is installed between the hob and the spacer, with the side containing the adjusting column facing the direction of the hob. A dial indicator or micrometer is installed on a stable bracket, and the cutter is rotated to observe the change in the indicator reading and calculate the runout. The adjusting column is moved and adjusted according to the required compensation position, thereby controlling the distance the adjusting column extends beyond the adjusting hole to adjust the hob position. After locking the adjusting column to the adjusting base, the radial runout of the hob is measured again. Based on the analysis of the current measurement structure and the previous measurement structure, the corresponding adjusting column is moved and adjusted again until the hob finally meets the radial runout requirement.

[0008] As an optimization, the adjusting hole is a threaded hole, and the adjusting pin is a threaded pin that is threaded into the adjusting hole. An internal hexagonal hole is recessed on the outer end face of the adjusting pin along its centerline. Rotation via a spiral motion allows for more precise adjustment of the adjusting pin's feed rate and relative position locking.

[0009] As an optimization, the outer end of the adjusting column extends beyond the adjusting base, and a column head is formed by a protrusion along the center line of the outer end of the adjusting column. The diameter of the column head is larger than the outer diameter of the adjusting column, and the internal hexagonal hole is located on the outer end face of the column head. This facilitates operation of the internal hexagonal hole using tools.

[0010] As an optimization, the inner end of the adjusting column is a frustum with a gradually decreasing diameter, and the lower end face of the adjusting column is provided with an inclined surface that matches the frustum.

[0011] As an optimization, the cone angle of the wedge fit is 7°±0.5°, which provides more precise adjustment control.

[0012] As an optimization, the adjustment hole is a rectangular hole, and the adjustment post has a rectangular cross-sectional geometry that matches the adjustment hole. This prevents the adjustment post from rotating and provides better guidance and positioning.

[0013] As an optimization, a keyway is provided on the wall of the mounting shaft hole, extending in a direction parallel to the center line of the mounting shaft hole. The keyway is a through groove.

[0014] Compared with existing technologies, this utility model replaces traditional shim compensation and achieves rapid and accurate correction of the radial runout of the hob by adjusting each adjusting column. This greatly reduces the reliance on operator experience, not only improving the hob installation efficiency but also enhancing assembly stability and ease of operation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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 this utility model. The components of the embodiments of this utility model 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 this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0017] like Figure 1As shown, the hob runout auxiliary adjustment device in this embodiment includes an adjustment base 1. The adjustment base 1 has parallel mounting surfaces on both sides. A mounting shaft hole 2 is provided on the adjustment base 1 at a position on the mounting surface. The center line of the mounting shaft hole 2 is perpendicular to the mounting surface. The adjustment base 1 can be sleeved on the hob shaft through the mounting shaft hole and is connected to the hob shaft via a drive mechanism. On one side of the mounting surface, outside the mounting shaft hole 2, several adjustment holes are provided at even intervals around the center line of the mounting shaft hole 2. The center line of the adjustment holes is parallel to the center line of the mounting shaft hole 2. Adjustment holes are provided on the circumferential surface of the mounting shaft hole 2, corresponding to the positions of each adjustment hole. The adjustment holes extend radially along the mounting shaft hole 2 and communicate with the adjustment holes. An adjustment post 3 is provided in the adjustment hole. The adjustment post 3 can slide and engage with the adjustment hole along the center line of the adjustment hole. An adjustment post is provided in the adjustment hole that can move along the center line of the adjustment hole and can be locked and fixed together with the adjustment base 1. The inner end of the adjustment post extends into the adjustment hole. The lower end of the adjustment post 3 is wedge-shaped and engaged with the inner end of the adjustment post. The upper end of the adjustment post 3 can extend out of the adjustment hole by moving the adjustment post.

[0018] In this specific embodiment, the adjusting hole is a threaded hole, the adjusting column is a threaded column and is threadedly engaged with the adjusting hole, and an internal hexagonal hole 4 is recessed on the outer end face of the adjusting column along the center line direction of the adjusting column.

[0019] In this specific embodiment, the outer end of the adjusting column extends out of the adjusting base 1, and a column head 5 is formed by protruding along the center of the outer end of the adjusting column. The diameter of the column head 5 is larger than the outer diameter of the adjusting column, and the internal hexagonal hole 4 is located on the outer end face of the column head 5.

[0020] In this specific embodiment, the inner end of the adjusting column is a frustum with a gradually decreasing diameter, and the lower end face of the adjusting column 3 is provided with an inclined surface that matches the frustum.

[0021] In this specific embodiment, the cone angle of the wedge-shaped fit is 7°.

[0022] In this specific embodiment, the adjustment hole is a rectangular hole, and the adjustment column 3 has a rectangular cross-sectional geometric profile that matches the adjustment hole.

[0023] In this specific embodiment, a keyway 6 is provided on the wall of the mounting shaft hole 2, extending in a direction parallel to the center line of the mounting shaft hole 1. The keyway 6 is a through groove.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A hob jump assist adjustment device, characterized by: The system includes an adjusting base with parallel mounting surfaces on both sides. A mounting shaft hole is provided on the adjusting base at a position on each mounting surface, with the center line of the mounting shaft hole perpendicular to the mounting surface. The adjusting base can be fitted onto the hob shaft through the mounting shaft hole and is connected to the hob shaft for transmission. On one side of the mounting surface, outside the mounting shaft hole, are several adjusting holes evenly spaced around the center line of the mounting shaft hole. The center line of the adjusting holes is parallel to the center line of the mounting shaft hole. The circumference of the adjusting base around the center line of the mounting shaft hole... Each adjustment hole is provided at the position corresponding to the adjustment hole. The adjustment hole extends radially along the mounting shaft hole and communicates with the adjustment hole. An adjustment column is provided in the adjustment hole. The adjustment column can slide and engage with the adjustment hole along the center line of the adjustment hole. An adjustment column is provided in the adjustment hole that can move along the center line of the adjustment hole and can be locked and fixed together with the adjustment base. The inner end of the adjustment column extends into the adjustment hole. The lower end of the adjustment column and the inner end of the adjustment column are wedge-shaped and engaged. The upper end of the adjustment column can be extended out of the adjustment hole by moving the adjustment column.

2. The gullet adjustment device of claim 1, wherein: The adjusting hole is a threaded hole, and the adjusting post is a threaded post that is threaded to the adjusting hole. An internal hexagonal hole is recessed on the outer end face of the adjusting post along the center line of the adjusting post.

3. The gullet adjustment device of claim 2, wherein: The outer end of the adjusting column extends out of the adjusting base. A column head is formed by protruding along the center of the outer end of the adjusting column. The diameter of the column head is larger than the outer diameter of the adjusting column. The internal hexagonal hole is located on the outer end face of the column head.

4. The gullet adjustment device of claim 1, wherein: The inner end of the adjusting column is a frustum with a gradually decreasing diameter, and the lower end face of the adjusting column is provided with an inclined surface that matches the frustum.

5. The gullet adjustment device of claim 1, wherein: The cone angle of the wedge fit is 7°±0.5°.

6. The gullet adjustment device of claim 1, wherein: The adjustment hole is a rectangular hole, and the adjustment post has a rectangular cross-sectional geometric profile that matches the adjustment hole.

7. The gullet adjustment device of claim 1, wherein: The mounting shaft hole has a keyway extending in a direction parallel to the center line of the mounting shaft hole. The keyway is a through groove.

Images