Base for machining inner gear ring

Abstract

A base for machining an inner gear ring comprises a base body, a through hole is formed in the middle of the base body, an annular table concentric with the through hole is arranged on the upper side face of the base body, the annular table is used for containing and positioning an inner gear ring workpiece, at least three fixing bases are installed on the upper side of the base body around the annular table, threaded holes are formed in the fixing bases, and fastening screws are connected with the threaded holes in a screwed mode. The fastening screw is used for abutting against the outer wall of the inner gear ring workpiece. A through hole is formed in the middle of the base, scrap iron can fall conveniently during machining, an inner gear ring workpiece is positioned through an annular table on the base, a fastening screw abuts against the outer wall of the inner gear ring workpiece for limiting and fixing, and during use, the base is installed on a rotary workbench of a machine tool through a pressing plate, so that the installation position and the rotation angle of the inner gear ring workpiece are guaranteed; and in addition, the structure is simpler, and the device can be conveniently used in the scene of batch production of inner gear rings of one specification.

Description

Technical Field

[0001] The utility model relates to the technical field of internal gear ring processing, in particular to a base used for internal gear ring processing. Background Art

[0002] At present, when the inner gear ring is processed by a machine tool, a clamping method similar to that in CN116160070A is often used to clamp and fix the inner gear ring. During clamping, the tooling screw is located on the outside of the inner gear ring, and the inner gear ring is pressed by a pressure plate. Each time the inner gear ring workpiece is clamped, the inner gear ring workpiece needs to be positioned, and then the inner gear ring is pressed by a pressure plate. If there are many specifications of inner gear rings to be produced, and the quantity of each specification is relatively small, this clamping method can also be used for production, but when a certain specification of inner gear ring is produced in batches, this clamping method becomes more cumbersome because the inner gear ring workpiece needs to be positioned each time it is clamped.

[0003] Chinese patent document CN210188737U, published (announcement) date: 2020.03.27, is a workpiece fixing device for a gear milling machine disclosed by our company, including an electric push rod, a fixing block, a limit plate, a driving roller and a fixing part. Its characteristics are: through four limit devices arranged at equal distances along the circumferential direction, the outer side of the inner gear ring workpiece to be processed is squeezed and limited at multiple places, so as to realize the fixation of the inner gear ring workpiece to be processed, ensure that the inner gear ring workpiece to be processed will not move arbitrarily during the milling process, and ensure the milling effect; the rotation of the motor drives the driving roller to rotate, thereby driving the inner gear ring workpiece to be processed to rotate, and realizes continuous milling of the inner ring of the inner gear ring workpiece to be processed, and ensures the efficiency of milling; its shortcomings are: first, due to the limitation of four electric push rods, the control requirements of the electric push rods are relatively high. After a period of use, the extension length of each electric push rod will have a large error, which will cause the workpiece to deviate from the center. Second: the workpiece is driven to rotate by the driving roller. After the driving roller is worn, it will cause slipping, so that the rotation angle of the workpiece cannot be guaranteed. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a base for internal gear ring processing, wherein the internal gear ring workpiece is positioned by a ring table on the base, and the internal gear ring workpiece is limited and fixed against the internal gear ring workpiece by a fixing screw. When in use, the base is installed on a rotating worktable of a machine tool, thereby ensuring the installation position and rotation angle of the internal gear ring workpiece, and the structure is simpler.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a base for internal gear ring processing, including a base, a through hole is opened in the middle of the base, and a ring platform concentric with the through hole is arranged on the upper side of the base, and the ring platform is used to place and position the internal gear ring workpiece, and at least three fixed seats are installed around the ring platform on the upper side of the base, and threaded holes are arranged in the fixed seats. The fixing screws are screwed with the threaded holes, and the fixing screws are used to abut against the outer wall of the internal gear ring workpiece.

[0006] The threaded hole of the fixing seat is provided with a positioning hole at one end close to the through hole, the diameter of the positioning hole is smaller than the diameter of the threaded hole, a limiting portion is formed between the threaded hole and the positioning hole, the front end of the fixing screw is provided with an extension portion, the diameter of the extension portion is smaller than the diameter of the fixing screw, abutting portion is formed between the fixing screw and the extension portion; in the use state, when the abutting portion abuts against the limiting portion, the extension portion abuts and fixes the inner gear ring workpiece.

[0007] A plurality of mounting seats are installed on the lower side of the base.

[0008] A support ring is fixedly arranged on the upper side of the base, the support ring is concentric with the ring platform, and an avoidance hole is arranged on the support ring at a position corresponding to the threaded hole.

[0009] A top plate is mounted on the support ring, a hole matching the inner diameter or outer diameter of the support ring is arranged in the middle of the top plate, and a fixing seat is fixedly connected to the base and the top plate.

[0010] An annular inclined surface is arranged on the upper side of the ring platform.

[0011] The utility model has the following beneficial effects:

[0012] The utility model has a through hole in the middle of the base, which is convenient for the iron chips to fall during processing. The inner gear ring workpiece is positioned by the ring stage on the base, and the inner gear ring workpiece is fixed by the tightening screw against the outer wall of the inner gear ring workpiece. When in use, the base is installed on the rotating worktable of the machine tool through the pressing plate, which ensures the installation position and rotation angle of the inner gear ring workpiece, and is simpler in structure. When mass-producing inner gear rings of one specification, this clamping method is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure from the bottom perspective of the first embodiment of the utility model.

[0016] Figure 3 for Figure 1Schematic diagram of the AA section structure.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the tightening screw of the utility model.

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model.

[0019] Figure 6 for Figure 5 Schematic diagram of the BB cross-section structure.

[0020] Figure 7 This is a schematic diagram of the state of the second embodiment of the utility model when the internal gear ring workpiece is clamped internally.

[0021] Figure 8 for Figure 7 Schematic diagram of the CC cross-section structure.

[0022] In the figure:

[0023] Base 10, through hole 11, annular platform 111, annular inclined surface 112, mounting seat 13;

[0024] A fixing seat 20, a threaded hole 21, a positioning hole 22, and a limiting portion 23;

[0025] A set screw 30, an extension portion 31, abutment portion 32, and a driving portion 33;

[0026] Support ring 40 , top plate 50 , inner gear ring workpiece 60 . DETAILED DESCRIPTION

[0027] Embodiment 1:

[0028] like Figure 1-3 As shown, a base for processing an inner gear ring includes a base 10, a through hole 11 is opened in the middle of the base 10, and a ring platform 111 concentric with the through hole 11 is arranged on the upper side of the base 10, and the ring platform 111 is used to place and position the inner gear ring workpiece 60. At least three fixing seats 20 are installed around the ring platform 111 on the upper side of the base 10, and threaded holes 21 are arranged in the fixing seats 20. The fixing screws 30 are screwed with the threaded holes 21, and the fixing screws 30 are used to abut against the outer wall of the inner gear ring workpiece 60. The through hole 11 is opened in the middle of the base 10 to facilitate the falling of iron chips during processing. The inner gear ring workpiece 60 is positioned by the ring platform 111 on the base 10, and the fixing screws 30 are abutted against the outer wall of the inner gear ring workpiece 60 for limiting and fixing. When in use, the base 10 is installed on the rotary table of the machine tool through the pressing plate, and the rotation control accuracy of the rotary table is higher, which ensures the installation position and rotation angle of the inner gear ring workpiece, and is simpler in structure. When producing a certain specification of internal gear rings in batches, this clamping method is simpler and more convenient.

[0029] When applying, see Figure 3 The diameter of the ring stage 111 matches the outer diameter of the inner ring gear workpiece 60 , that is, the inner ring gear workpiece 60 can be placed in the ring stage 111 , and there is no obvious gap between the inner ring gear workpiece 60 and the ring stage 111 that can cause the inner ring gear workpiece 60 to shake.

[0030] In addition, a gear shaping machine with a rotary table is known in the art.

[0031] Preferably, in this embodiment, four fixing seats 20 are evenly distributed in an annular shape. As required, six or eight fixing seats 20 may also be evenly distributed in an annular shape.

[0032] For further information, see Figure 3 , 4 The threaded hole 21 of the fixing seat 20 is provided with a positioning hole 22 at one end close to the through hole 11. The diameter of the positioning hole 22 is smaller than the diameter of the threaded hole 21. A limiting portion 23 is formed between the threaded hole 21 and the positioning hole 22. The front end of the fixing screw 30 is provided with a protruding portion 31. The diameter of the protruding portion 31 is smaller than the diameter of the fixing screw 30. A contact portion 32 is formed between the fixing screw 30 and the protruding portion 31. In the use state, when the contact portion 32 contacts the limiting portion 23, the extending portion 31 contacts and fixes the inner gear ring workpiece 60. Through the limiting of the contact portion 32 of each fixing screw 30 and the limiting portion 23, when the fixing screw 30 is tightened, the extended length of each fixing screw 30 is the same. Preferably, the fixing seat 20 and the fixing screw 30 are made of steel with high hardness and not easy to wear.

[0033] It should be noted that a driving portion 33 is provided at one end of the set screw 30 away from the extension portion 31 , and the driving portion 33 may be a hexagonal or square structure.

[0034] For further information, see Figure 2 A plurality of mounting seats 13 are installed on the lower side of the base 10. The mounting seats 13 are provided to facilitate the base 10 to be installed on the rotary table of the machine tool, and the mounting seats 13 further raise the height of the base 10 to facilitate chip removal.

[0035] Embodiment 2:

[0036] Based on Example 1, see Figure 5 , 6 A support ring 40 is fixed on the upper side of the base 10, and the support ring 40 is concentric with the ring stage 111. The support ring 40 is provided with an avoidance hole at a position corresponding to the threaded hole 21. The structural strength of the base 10 prevents the base 10 from being deformed by force from top to bottom during processing.

[0037] Furthermore, a top plate 50 is mounted on the support ring 40, a hole matching the inner diameter or outer diameter of the support ring 40 is provided in the middle of the top plate 50, and the fixing seat 20 is fixedly connected to the base 10 and the top plate 50. The overall structural strength of the base is further improved. The hole on the top plate 50 can match the inner diameter of the support ring 40, so that the top plate 50 is welded to the upper end of the support ring 40, and the hole on the top plate 50 can match the outer diameter of the support ring 40, so that the top plate 50 is welded to the outer side of the upper end of the support ring 40.

[0038] See also Figure 3 The upper side of the ring stage 111 is provided with an annular inclined surface 112 to eliminate sharp corners and prevent the ring stage 111 from deforming due to collision between the sharp corners of the inner gear ring workpiece 60 and the ring stage 111 when the inner gear ring workpiece 60 is clamped.

[0039] The use process or principle of the utility model is as follows:

[0040] See also Figure 7 , 8 When in use, first position the base on the rotary table of the machine tool, and after the square head bolts on the rotary table pass through the holes on the mounting seat 13, nuts are installed to fix the base and the rotary table.

[0041] The inner gear ring workpiece 60 is hoisted and placed on the ring platform 111 of the base by a magnetic lifting device, and each fixing screw 30 is tightened. When the abutting portion 32 abuts against the limiting portion 23, the fixing screw 30 cannot rotate. At this time, the extending portion 31 of the fixing screw 30 just abuts against the inner gear ring workpiece 60.

[0042] See also Figure 8 During the gear shaping process, the lower side of the inner gear ring workpiece 60 is suspended to facilitate chip removal.

Claims

1. A base for machining an internal gear ring, comprising a base (10), a through hole (11) being provided in the middle of the base (10), characterized in that: The upper side surface of the base (10) is provided with a ring platform (111) concentric with the through hole (11), the ring platform (111) is used to place and position the inner gear ring workpiece (60), and at least three fixing seats (20) are installed around the ring platform (111) on the upper side of the base (10), a threaded hole (21) is provided in the fixing seat (20), a fixing screw (30) is screwed to the threaded hole (21), and the fixing screw (30) is used to abut against the outer wall of the inner gear ring workpiece (60).

2. A base for internal gear ring machining according to claim 1, characterized in that: The threaded hole (21) of the fixing seat (20) is provided with a positioning hole (22) at one end close to the through hole (11); the diameter of the positioning hole (22) is smaller than the diameter of the threaded hole (21); a limiting portion (23) is formed between the threaded hole (21) and the positioning hole (22); a protruding portion (31) is provided at the front end of the fixing screw (30); the diameter of the protruding portion (31) is smaller than the diameter of the fixing screw (30); abutting portion (32) is formed between the fixing screw (30) and the protruding portion (31); in a use state, when the protruding portion (32) abuts against the limiting portion (23), the protruding portion (31) abuts and fixes the inner gear ring workpiece (60).

3. A base for machining an internal gear ring according to claim 1, characterized in that: A plurality of mounting seats (13) are mounted on the lower side of the base (10).

4. A base for internal gear ring machining according to any one of claims 1 to 3, characterized in that: A support ring (40) is fixedly provided on the upper side of the base (10); the support ring (40) is concentric with the ring platform (111); and the support ring (40) is provided with an avoidance hole at a position corresponding to the threaded hole (21).

5. A base for machining an internal gear ring according to claim 4, characterized in that: A top plate (50) is mounted on the support ring (40), a hole matching the inner diameter or outer diameter of the support ring (40) is provided in the middle of the top plate (50), and the fixing seat (20) is fixedly connected to the base (10) and the top plate (50).

6. A base for internal gear ring machining according to claim 1, characterized in that: An annular inclined surface (112) is provided on the upper side of the annular platform (111).

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