Elliptic arc tooth trace cylindrical gear drum type processing device

Abstract

The utility model discloses an oval arc tooth line cylindrical gear drum type processing device relates to tooling technical field, including main part subassembly, including shell, the lower end fixedly connected with the cutter head cover of shell, processing subassembly, including the connecting cutter head that can rotate and connect in the cutter head cover, the center of connecting cutter head is connected with power transmission shaft, and the connecting cutter head on the both ends outside of power transmission shaft is connected with two groups of tool connecting unit respectively, and tool connecting unit includes the push rod of sliding connection on the cutter head, and the cutting blade for cutting tooth blank is fixed below push rod, height adjusting subassembly, including the limiting board that rotates and connects in the shell, and the push rod sleeve is sleeved on the push rod, and the upside of push rod sleeve is equipped with the friction head of the downside of limiting board, and the top of friction head and push rod sleeve all are fixedly connected on the upside of push rod, and the rigidity spring is connected between connecting cutter head and the downside of push rod sleeve. The utility model discloses simple structure, and each part in processing subassembly can detachably connect in the shell, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical gear processing technology, and in particular to a roller-type processing device for cylindrical gears with elliptical arc tooth lines. Background Technology

[0002] As a core component in the field of mechanical power transmission, the lightweight and maintainability of cylindrical gear processing equipment has become a key factor restricting the industry's development. Currently, mainstream gear processing equipment on the market generally suffers from structural redundancy and large size. This not only requires additional foundation engineering support for equipment installation but also significantly hinders daily maintenance operations—the complex mechanical structure makes fault diagnosis difficult, and the replacement of key components requires complete machine disassembly, greatly increasing downtime and labor costs. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] To address the technical problems existing in the processing equipment of the prior art, this utility model provides the following technical solution: A roller-type machining device for elliptical arc toothed cylindrical gears, comprising, The main component includes a housing, and a cutter head sleeve is fixedly connected to the lower end of the housing; The machining assembly includes a connecting cutter disc that can be rotatably connected inside the cutter disc sleeve. A power transmission shaft is connected to the center of the connecting cutter disc. Two sets of height-adjustable tool connecting units are respectively connected to the connecting cutter disc at both ends of the power transmission shaft. Each tool connecting unit includes an upper push rod that is slidably connected to the cutter disc. An intermediate connecting seat is fixedly connected below the upper push rod. A blade mounting seat is fixedly connected to the lower side of the intermediate connecting seat. A cutting blade for cutting the gear blank is fixedly connected below the blade mounting seat. The height adjustment assembly includes a limiting plate located above the processing assembly and rotatably connected within the housing. A push rod sleeve is fitted onto the upper push rod. A hemispherical friction head is located on the upper side of the push rod sleeve and below the limiting plate. The friction head and the top of the push rod sleeve are both fixedly connected to the upper side of the upper push rod. A rigid spring is fitted onto the upper push rod and connects the upper side of the connecting cutter head and the lower side of the top of the push rod sleeve. The rigid spring is in a compressed state, and the limiting plate always abuts against the friction head.

[0005] A connecting sleeve is fixedly connected to the lower side of the outer shell. Several fixing countersunk holes are arranged on the lower side of the outer shell. Several intermediate fixing holes corresponding to the fixing countersunk holes are arranged on the connecting sleeve. The cutter head sleeve includes a horizontal connecting ring. A support ring is fixed on the upper side of the horizontal connecting ring. The support ring is inserted into the inner side of the connecting sleeve. The upper side of the horizontal connecting ring abuts against the lower side of the connecting sleeve. The connecting cutter head is rotatably connected to the support ring. Several lower fixing holes corresponding to the intermediate fixing holes are arranged on the horizontal connecting ring. After the fixing screw is inserted into the lower fixing hole, screwed into the intermediate fixing hole and the fixing countersunk hole, the bottom of the fixing screw is pressed against the lower side of the horizontal connecting ring, fixing the outer shell, connecting sleeve and cutter head sleeve together, improving the reliability of the connection structure between the cutter head sleeve and the outer shell. The two cutting inserts are an internal cutting tool and an external cutting tool. The internal cutting tool is used for machining the convex tooth surface of the tooth profile, and the external cutting tool is used for machining the concave tooth surface (this is prior art, and only a schematic diagram is given in this application, but it does not affect the understanding of this description in this technical field). By adjusting the axial position of the upper push rod, the upper push rod drives the cutting insert to move, thereby changing the initial axial extension length of the two cutting inserts beyond the connecting cutter head, thereby adjusting the root depth of the corresponding tooth surface, realizing the shaping of the tooth root transition curve at the bottom of the tooth groove, and optimizing the stress distribution at the tooth root according to the design load. This utility model has a simple structure, and all components in the processing assembly can be detachably connected to the outer shell, making maintenance convenient; it can be applied to the auxiliary processing of cylindrical gears with circular arc tooth lines.

[0006] As a preferred embodiment of the elliptical arc tooth cylindrical gear roller processing device of this utility model, wherein: an installation port is opened on the outer shell above the limiting plate, a corner platform is fixedly connected to the outer shell at the installation port, the base of the corner platform is fixedly connected to the outer shell, the lower side of the base has an arc surface, a movable block that can slide along the arc surface is connected to the lower side of the base, a handwheel for moving the movable block is connected to the movable block, and the movable block is fixedly connected to the upper side of one end of the limiting plate.

[0007] As a preferred embodiment of the elliptical arc tooth cylindrical gear roller processing device of this utility model, a connecting plate is fixed on the upper side of the base, and at least two connecting holes are opened on the connecting plate. Several connecting countersunk holes corresponding one-to-one with the connecting holes are opened on the outer shell at the upper end of the mounting port.

[0008] As a preferred embodiment of the elliptical arc tooth cylindrical gear roller processing device of this utility model, wherein: an intermediate plate is fixed on the upper side of the other end of the limiting plate, a support shaft is rotatably connected to the outer shell, the support shaft is fixedly connected to the outside of the intermediate plate, and the center of the support shaft and the center of the arc surface are at the same height.

[0009] As a preferred embodiment of the elliptical arc tooth cylindrical gear roller processing device of this utility model, the outer diameter of the outer edge of the connecting cutter disc gradually decreases from top to bottom, and the center of the cutter disc sleeve has a rotating hole that mates with the connecting cutter disc, and the connecting cutter disc and the cutter disc sleeve are fitted with a clearance through the rotating hole.

[0010] As a preferred embodiment of the elliptical arc tooth cylindrical gear roller processing device of this utility model, the lower outer periphery of the power transmission shaft is provided with a number of connecting keys, the connecting cutter head is provided with a number of connecting grooves corresponding to the connecting keys, and the power transmission shaft on the lower side of the connecting cutter head is threaded with a limiting nut that fits against the lower side of the connecting cutter head.

[0011] As a preferred embodiment of the elliptical arc tooth cylindrical gear roller machining device of this utility model, the tool connecting unit further includes a guide sleeve fixedly connected to the upper side of the connecting tool disc. The guide sleeve has a non-circular guide groove at its center, and the upper push rod can be slidably connected to the guide sleeve through the guide groove.

[0012] In a preferred embodiment of the elliptical arc toothed cylindrical gear roller machining device of this utility model, a tool holder is fixedly connected to the tool mounting seat, and the cutting blade is fixedly connected to the tool holder. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is the front view of the present invention.

[0014] Figure 2 The three-dimensional structure of this utility model Figure 1 .

[0015] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0016] Figure 4 This is a structural diagram showing a set of tool connecting units connected to a connecting tool head.

[0017] Figure 5 This is a three-dimensional structural diagram of the present invention after the outer shell is hidden.

[0018] Figure 6 This is a schematic diagram of the structure where the power transmission shaft and one set of tool connection units are connected to the connecting tool head.

[0019] The diagram labels are as follows: 100 Main body assembly, 101 Tool head sleeve, 101-1 Support ring, 101-2 Horizontal connecting ring, 102 Connecting sleeve, 103 Housing, 103-1 Mounting port, 104 Fixing screw, 200 Machining component, 201 Washer, 202 Limit nut, 203 Tool connecting unit, 203-1 Middle part connecting seat, 203-2 Tool mounting seat, 203-3 Tool holder, 203-4 Upper push rod, 203-5 Friction rod. 203-6 Push rod sleeve, 203-7 Rigid spring, 203-8 Guide sleeve, 204 Cutting insert, 205 Connecting cutter head, 206 Mounting tool holder, 300 Height adjustment assembly, 301 Limiting plate, 301-1 Intermediate plate, 301-1 Fastening hole, 302 Corner platform, 302-1 Base, 302-1a Connecting plate, 302-2 Handwheel, 302-3 Movable block, 303 Support shaft, 304 Fastening screw. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0023] Example 1: Refer to Figure 1 , Figure 5 and Figure 6This is the first embodiment of the present invention, which provides an elliptical arc toothed cylindrical gear roller-type machining device, including a main body assembly. The main body assembly includes a shell, and a cutter head sleeve is fixedly connected to the lower end of the shell. A machining component is connected to the shell, and the machining component includes a connecting cutter head rotatably connected to the cutter head sleeve. A power transmission shaft is connected to the center of the connecting cutter head, and a mounting tool holder connected to a machine tool is fixedly connected to the upper end of the power transmission shaft. Two sets of height-adjustable tool connecting units are respectively connected to the connecting cutter heads outside both ends of the power transmission shaft. Each tool connecting unit includes an upper push rod slidably connected to the cutter head, and an intermediate connecting seat is fixedly connected below the upper push rod. A blade mounting base is fixedly connected to the lower side of the base, and a tool holder is fixedly connected to the blade mounting base. A cutting blade for cutting the gear blank is fixedly connected to the lower end of the tool holder. A height adjustment component for adjusting the axial position of the cutting blade is provided on the connecting cutter head. The height adjustment component includes a limiting plate located above the machining component and rotatably connected to the housing. A push rod sleeve is sleeved on the upper push rod. A hemispherical friction head is provided on the upper side of the push rod sleeve below the limiting plate. The friction head and the top of the push rod sleeve are both fixedly connected to the upper side of the upper push rod. A rigid spring is sleeved on the upper push rod and connected between the upper side of the connecting cutter head and the lower side of the top of the push rod sleeve. The rigid spring is in a compressed state, and the limiting plate is always in contact with the friction head.

[0024] The tool holder is connected to the spindle of an external machine tool via a pull stud and the tapered surface of the tool holder's outer edge. The spindle of the external machine tool provides rotational power to the power transmission shaft. A connecting sleeve is fixedly connected to the lower side of the housing. Several countersunk holes are arranged on the lower side of the housing. Several intermediate fixing holes corresponding to the countersunk holes are arranged on the connecting sleeve. The tool disc sleeve includes a horizontal connecting ring. A support ring is fixed to the upper side of the horizontal connecting ring. The support ring is inserted into the inner side of the connecting sleeve. The upper side of the horizontal connecting ring abuts against the lower side of the connecting sleeve. The connecting tool disc is rotatably connected to the support ring. Several lower fixing holes corresponding to the intermediate fixing holes are arranged on the horizontal connecting ring. After inserting fixing screws into the lower fixing holes, screwing them into the intermediate fixing holes and the countersunk holes, the bottom of the fixing screws is pressed against the lower side of the horizontal connecting ring, fixing the housing, connecting sleeve and tool disc sleeve together, improving the reliability of the connection structure between the tool disc sleeve and the housing. The two cutting inserts are an internal cutting tool and an external cutting tool. The internal cutting tool is used for machining the convex tooth surface of the tooth profile, and the external cutting tool is used for machining the concave tooth surface (this is prior art, and only a schematic diagram is given in this application, but it does not affect the understanding of this description in this technical field). Before machining, the extension length of the two cutting inserts is adjusted according to the tooth root depth of the cylindrical gear to be machined. Specifically, the limiting plate is rotated, one end of the limiting plate swings downward, and the other end of the limiting plate swings upward. The downward swinging end of the limiting plate moves downward against the upper push rod through the corresponding friction head and push rod sleeve. The push rod sleeve at the end of the upward swinging limiting plate moves upward under the action of a rigid spring. The push rod sleeve drives the corresponding cutting disc to move upward through the upper push rod. When the two cutting inserts move to the appropriate position, the limiting plate stops rotating. Through the above operation, the initial axial extension length of the two cutting inserts beyond the connecting disc is changed, thereby adjusting the tooth root depth of the corresponding tooth surface, realizing the shaping of the tooth root transition curve at the bottom of the tooth groove, and optimizing the stress distribution at the tooth root according to the design load. This utility model has a simple structure, and all components in the processing assembly can be detachably connected inside the outer shell, making maintenance convenient; it can be applied to auxiliary processing operations of cylindrical gears with circular arc tooth lines.

[0025] Specifically, the outer diameter of the connecting cutter head gradually decreases from top to bottom, and the center of the cutter head sleeve has a rotating hole that mates with the connecting cutter head. The connecting cutter head and the cutter head sleeve are fitted with a clearance through the rotating hole.

[0026] By setting up the above structure, the downward movement of the connecting cutter head is restricted, thereby improving the reliability of the connecting cutter head rotation after the power transmission shaft is connected to the machine tool.

[0027] Specifically, the lower outer periphery of the power transmission shaft is provided with several connecting keys, and the connecting cutter head is provided with several connecting grooves that correspond one-to-one with the connecting keys. A washer is fitted onto the power transmission shaft on the lower side of the connecting cutter head, and a limiting nut that fits against the lower side of the washer is threaded onto the power transmission shaft on the lower side of the washer. The limiting nut causes the washer to abut against the lower side of the connecting cutter head.

[0028] Specifically, the tool connecting unit also includes a guide sleeve fixedly connected to the upper side of the connecting tool disc. The guide sleeve has a non-circular guide groove in its center, and the upper push rod can be slidably connected to the guide sleeve through the guide groove.

[0029] When the upper push rod moves, it slides along the guide groove, making the movement of the upper push rod smoother and improving the reliability of its position adjustment.

[0030] Example 2: Refer to Figures 2-4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment and can further realize the angle adjustment of the limiting plate.

[0031] Specifically, an installation port is provided on the outer shell above the limiting plate. A corner platform (a conventional technology, whose specific structure is not an improvement of this application) is fixedly connected to the outer shell at the installation port. The base of the corner platform is fixedly connected to the outer shell. The lower side of the base has an arc surface. A movable block that can slide along the arc surface is connected to the lower side of the base. A handwheel for moving the movable block is connected to the movable block. The movable block is fixedly connected to the upper side of one end of the limiting plate. An intermediate plate is fixedly connected to the upper side of the other end of the limiting plate. A support shaft is rotatably connected to the outer shell. The support shaft is fixedly connected to the outside of the intermediate plate. Several fastening holes are arranged on the intermediate plate. Several fastening countersunk holes corresponding to the fastening holes are provided on the side of the support shaft opposite to the intermediate plate. Fastening screws are screwed into the fastening holes and fastening countersunk holes to fix the support shaft relative to the limiting plate. The center of the support shaft and the center of the arc surface are at the same height.

[0032] When adjusting the angle of the limit plate, turn the handwheel. The handwheel will cause the movable block to slide along the lower side of the arc surface. The movable block will cause the limit plate to rotate. Observe the scale of the corner platform. When the limit plate rotates to the appropriate angle, stop turning the handwheel and use the locking part of the corner platform to lock the movable block and fix the angle of the movable block.

[0033] Specifically, a connecting plate is fixed on the upper side of the base, and at least two connecting holes are opened on the connecting plate. Several countersunk holes corresponding to the connecting holes are opened on the outer shell at the upper end of the mounting port.

[0034] When installing the corner stage, use fastening screws to screw into the connecting holes and corresponding countersunk holes. The fastening screws press the connecting plate onto the outer shell, thus fixing the connecting plate to the outer shell and achieving a fixed connection between the corner stage and the outer shell.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A roller-type machining device for elliptical arc toothed cylindrical gears, characterized in that: include, The main component includes a housing, and a cutter head sleeve is fixedly connected to the lower end of the housing; The machining assembly includes a connecting cutter disc that can be rotatably connected inside the cutter disc sleeve. A power transmission shaft is connected to the center of the connecting cutter disc. Two sets of height-adjustable tool connecting units are respectively connected to the connecting cutter disc at both ends of the power transmission shaft. Each tool connecting unit includes an upper push rod that is slidably connected to the cutter disc. An intermediate connecting seat is fixedly connected below the upper push rod. A blade mounting seat is fixedly connected to the lower side of the intermediate connecting seat. A cutting blade for cutting the gear blank is fixedly connected below the blade mounting seat. The height adjustment assembly includes a limiting plate located above the processing assembly and rotatably connected within the housing. A push rod sleeve is fitted onto the upper push rod. A hemispherical friction head is located on the upper side of the push rod sleeve and below the limiting plate. The friction head and the top of the push rod sleeve are both fixedly connected to the upper side of the upper push rod. A rigid spring is fitted onto the upper push rod and connects the upper side of the connecting cutter head and the lower side of the top of the push rod sleeve. The rigid spring is in a compressed state, and the limiting plate always abuts against the friction head.

2. The elliptical arc toothed cylindrical gear roller processing device as described in claim 1, characterized in that: An installation opening is provided on the outer shell above the limiting plate. A corner platform is fixedly connected to the outer shell at the installation opening. The base of the corner platform is fixedly connected to the outer shell. The lower side of the base has an arc surface. A movable block that can slide along the arc surface is connected to the lower side of the base. A handwheel for moving the movable block is connected to the movable block. The movable block is fixedly connected to the upper side of one end of the limiting plate.

3. The elliptical arc toothed cylindrical gear roller processing device as described in claim 2, characterized in that: A connecting plate is fixed on the upper side of the base. The connecting plate has at least two connecting holes. The outer shell at the upper end of the mounting port has several countersunk holes that correspond one-to-one with the connecting holes.

4. The elliptical arc toothed cylindrical gear roller processing device as described in claim 2, characterized in that: An intermediate plate is fixed to the upper side of the other end of the limiting plate, and a support shaft is rotatably connected to the outer shell. The support shaft is fixedly connected to the outside of the intermediate plate, and the center of the support shaft and the center of the arc surface are at the same height.

5. The elliptical arc toothed cylindrical gear roller-type machining device according to any one of claims 1 to 4, characterized in that: The outer diameter of the connecting cutter head gradually decreases from top to bottom. The center of the cutter head sleeve has a rotating hole that mates with the connecting cutter head. The connecting cutter head and the cutter head sleeve are fitted with a clearance through the rotating hole.

6. The elliptical arc toothed cylindrical gear roller processing device as described in claim 1, characterized in that: The lower outer periphery of the power transmission shaft is provided with several connecting keys, and the connecting cutter head is provided with several connecting grooves that correspond one-to-one with the connecting keys. The power transmission shaft on the lower side of the connecting cutter head is threaded with a limiting nut that fits against the lower side of the connecting cutter head.

7. The elliptical arc toothed cylindrical gear roller processing device as described in claim 1, characterized in that: The tool connecting unit also includes a guide sleeve fixedly connected to the upper side of the connecting tool disc. The guide sleeve has a non-circular guide groove in its center, and the upper push rod can be slidably connected to the guide sleeve through the guide groove.

8. The elliptical arc toothed cylindrical gear roller processing device as described in claim 1, characterized in that: A tool holder is fixedly connected to the blade mounting base, and the cutting blade is fixedly connected to the tool holder.

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