Lantern ring device of tool base for machining gear parts

Abstract

The utility model discloses a lantern ring device of a tool base for machining gear type parts, and solves the technical problems that the application range of a new tool base is limited, time and labor are consumed when the tool base is improved, and the machining precision is difficult to guarantee. The lantern ring device comprises a fastening ring, a variable-diameter lantern ring and a hollow screw which are coaxially arranged, an annular groove is formed in the inner side face of the lower end of the fastening ring and used for enabling the fastening ring to be connected to the step face of the tool base in a sleeving mode. The variable-diameter lantern ring is located at the upper end of the fastening ring and formed by splicing a plurality of arc-shaped sliding blocks, and the lower end face of each arc-shaped sliding block is in sliding connection with the upper end face of the fastening ring in the radial direction. The outer wall of the variable-diameter lantern ring is used for abutting against the inner wall of a to-be-machined part, and the inner wall is a first conical surface with the large end facing upwards. The hollow screw is located in the variable-diameter lantern ring, and the outer side face of the upper end of the hollow screw is provided with a second conical face matched with the first conical face. The outer side face of the lower end of the hollow screw is in threaded connection with the inner side face of the fastening ring, and the inner side face is used for abutting against the side wall of the tool base.

Description

Technical Field

[0001] This utility model relates to a tooling base for gear parts, specifically to a collar device for a tooling base used in the machining of gear parts. Background Technology

[0002] In the machinery manufacturing and automated machining industries, precise assembly and efficient machining of parts are key to improving product quality and production efficiency. With continuous technological advancements and changing market demands, the diverse and complex performance requirements of newly designed parts, especially gears, often place higher demands on the compatibility and flexibility of tooling bases.

[0003] To address the aforementioned compatibility issues, existing technologies typically employ the method of fabricating new tooling bases to adapt to the machining requirements of newly designed gear-like parts. However, this method often requires a long production cycle and high production costs, and also affects production schedules. For example, utility model patent CN216178483 U discloses a machining center capable of processing reducer housings of various specifications, but it can only be used for auxiliary machining of reducer housings of two specifications, thus limiting its applicability.

[0004] Alternatively, adaptation improvements can be made to the existing tooling base, but this is often time-consuming and labor-intensive, and it is difficult to guarantee the machining accuracy. Utility Model Content

[0005] The purpose of this utility model is to solve the technical problems of the limited applicability of the new tooling base manufactured in the prior art, as well as the time-consuming and labor-intensive process of improving the tooling base and the difficulty in ensuring the processing accuracy, and to provide a collar device for the tooling base for processing gear parts.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A collar device for a tooling base used in machining gear parts, wherein the tooling base has a stepped columnar structure, and its special feature is:

[0008] This includes coaxially arranged fastening rings, variable diameter collars, and hollow screws;

[0009] The inner side of the lower end of the fastening ring is provided with an annular groove for fitting the fastening ring onto the stepped surface of the tooling base; the fastening ring is used to support the part to be processed.

[0010] The variable diameter collar is located at the upper end of the fastening ring and is composed of multiple arc-shaped sliders. In the initial state, the centers of the multiple arc-shaped sliders coincide. The lower end face of each arc-shaped slider is radially slidably connected to the upper end face of the fastening ring. The outer wall of the variable diameter collar is used to abut against the inner wall of the part to be machined, and the inner wall is a first conical surface with the large end facing upward.

[0011] The hollow screw is located inside the variable diameter collar, and its upper outer surface is provided with a second conical surface that matches the first conical surface; the lower outer surface of the hollow screw is threadedly connected to the inner surface of the fastening ring, and the inner surface is used to abut against the side wall of the tooling base.

[0012] Furthermore, each of the arc-shaped sliders has a T-shaped protrusion in the middle of its lower end face; the inner side of the upper end of the fastening ring has multiple T-shaped grooves that correspond one-to-one with the T-shaped protrusions in the radial direction, which are used to realize the sliding connection between the lower end faces of the multiple arc-shaped sliders and the upper end face of the fastening ring.

[0013] Furthermore, the T-shaped protrusion is provided with a guide hole, and the corresponding T-shaped groove is provided with a guide pin. One end of the guide pin is fixedly installed in the inner end of the corresponding T-shaped groove, and the other end is slidably connected to the T-shaped protrusion through the guide hole.

[0014] Furthermore, the minimum inner diameter of the variable diameter collar is equal to the inner diameter of the fastening ring, and the difference between the maximum outer diameter and the minimum outer diameter is ≤5mm.

[0015] Furthermore, the fastening ring, the arc-shaped slider, and the hollow screw are made of alloy tool steel Cr12MoV.

[0016] Furthermore, the annular groove and the horizontal contact surface of the tooling base are provided with multiple threaded holes along the axial direction, which are used to lock the fastening ring onto the tooling base by means of a positioning pin.

[0017] Furthermore, the number of the arc-shaped sliders is four.

[0018] Furthermore, the hollow screw is an internal hexagonal hollow screw.

[0019] The advantages of this utility model compared to the prior art are:

[0020] 1. This utility model provides a collar device for a tooling base used for machining gear parts. A fastening ring is fitted onto the corresponding stepped surface of the tooling base to support the part to be machined. A variable-diameter collar is located above the fastening ring and can slide radially relative to it. A hollow screw is located inside the variable-diameter collar and connected to the fastening ring. During the connection between the hollow screw and the fastening ring, the downward movement of the hollow screw increases the outer diameter of the variable-diameter collar, thus adapting it to the inner diameter of the part to be machined. This utility model eliminates the need for redesigning or modifying the tooling base. The collar device is simply installed on an existing tooling base, and adaptation to the part to be machined is achieved by adjusting the outer diameter of the variable-diameter collar. This reduces design or modification costs and has strong applicability.

[0021] 2. In the collar device of the tooling base for processing gear parts provided by this utility model, each arc-shaped slider is connected to the fastening ring by a guide pin, thereby ensuring the stability of the arc-shaped slider sliding on the fastening ring.

[0022] 3. In the collar device of the tooling base for processing gear parts provided by this utility model, the difference between the maximum and minimum outer diameter of the variable diameter collar is ≤5mm, so it can be applied to the auxiliary processing of parts of the same type with different inner diameters.

[0023] 4. In the collar device of the tooling base for machining gear parts provided by this utility model, the annular groove of the fastening ring and the horizontal contact surface of the tooling base are provided with multiple threaded holes along the axial direction. The fastening ring can be locked on the tooling base by the positioning pin, thereby ensuring the stability of the part machining process and improving the machining accuracy of the part.

[0024] 5. The collar device for the tooling base for processing gear parts provided by this utility model is relatively convenient to assemble and disassemble, thereby improving production efficiency.

[0025] 6. The collar device of the tooling base for processing gear parts provided by this utility model, combined with the tooling base of the corresponding size, can adapt to the diversity and complexity of newly designed parts. Attached Figure Description

[0026] Figure 1 This is a top view of the structure of an embodiment of the present utility model;

[0027] Figure 2 for Figure 1 Sectional view of AA;

[0028] Figure 3 This is a schematic diagram illustrating the usage state of an embodiment of the present utility model;

[0029] Figure 4 for Figure 3 DD section view;

[0030] Figure 5 This is a bottom view of the fastening ring in an embodiment of this utility model;

[0031] Figure 6 This is a perspective view of the fastening ring in an embodiment of the present invention;

[0032] Figure 7 for Figure 6 Enlarged view of section B in the middle;

[0033] Figure 8 This is a schematic diagram of the variable diameter collar in an embodiment of the present invention;

[0034] Figure 9 for Figure 8 Enlarged view of section C;

[0035] Figure 10 This is a top view of the hollow screw in an embodiment of this utility model;

[0036] Figure 11 This is a side view of the hollow screw in an embodiment of this utility model.

[0037] The attached figures are labeled as follows:

[0038] 1- Tooling base, 2- Part to be processed, 3- Fastening ring, 31- Annular groove, 32- T-slot, 33- Guide pin, 34- Positioning hole, 4- Variable diameter collar, 41- Arc-shaped slider, 42- First conical surface, 43- T-shaped protrusion, 44- Guide hole, 5- Hollow screw, 51- Second conical surface. Detailed Implementation

[0039] To make the objectives, advantages and features of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1 to 4 As shown, this embodiment provides a collar device for a tooling base used in machining gear parts, including a fastening ring 3, a variable diameter collar 4, and a hollow screw 5 arranged coaxially. The tooling base 1 in this embodiment has a stepped columnar structure for supporting the collar device.

[0041] like Figure 4 and Figure 5 As shown, the upper end face of the fastening ring 3 is used to support the part 2 to be processed. The inner side of the lower end of the fastening ring 3 is provided with an annular groove 31 for fitting the fastening ring 3 onto the stepped surface of the tooling base 1. To ensure the stability of the support for the part 2 to be processed, this embodiment provides three positioning holes 34 along the axial direction on the horizontal contact surface between the annular groove 31 and the tooling base 1. By inserting one end of a positioning pin into the positioning hole 34 and the other end into the corresponding through hole on the tooling base 1, the fastening ring 3 can be locked onto the tooling base 1. This ensures that the entire ring assembly can be quickly aligned with the existing tooling base 1 during assembly, and no further recalibration of the robot gripping point is required until the installation is completed. It should be noted that if a tooling base of another size is replaced, the robot gripping point recalibration must be performed.

[0042] Combination Figure 2 , Figures 6 to 9As shown, the variable diameter collar 4 is located at the upper end of the fastening ring 3 and is composed of multiple arc-shaped sliders 41. In the initial state (i.e., the multiple arc-shaped sliders 41 are connected in sequence to form a closed ring structure), the centers of the multiple arc-shaped sliders 41 coincide. In this embodiment, there are four arc-shaped sliders 41. The lower end face of each arc-shaped slider 41 is radially slidably connected to the upper end face of the fastening ring 3. Specifically, each arc-shaped slider 41 has a T-shaped protrusion 43 in the middle of its lower end face, and the inner side of the upper end of the fastening ring 3 has multiple T-shaped grooves 32 that correspond one-to-one with the T-shaped protrusions 43, thereby realizing the radial sliding connection between the lower end face of the arc-shaped slider 41 and the upper end face of the fastening ring 3 without axial movement. Meanwhile, in order to ensure the stability of the sliding process, this embodiment also provides a guide hole 44 on the T-shaped protrusion 43, and a guide pin 33 is provided in the corresponding T-shaped groove 32. One end of the guide pin 33 is fixedly installed in the inner end of the corresponding T-shaped groove 32, and the other end is slidably connected to the T-shaped protrusion 43 through the guide hole 44.

[0043] The outer wall of the variable diameter collar 4 abuts against the inner wall of the workpiece 2 to be machined. By sliding radially along the fastening ring 3, the outer diameter of the variable diameter collar 4 changes to match the inner diameter of the workpiece 2, ensuring that it is radially stably supported during machining. The minimum inner diameter of the variable diameter collar 4 is equal to the inner diameter of the fastening ring 3, and the difference between the maximum and minimum outer diameters is ≤5mm.

[0044] Combination Figure 2 , Figure 10 and Figure 11 As shown, the hollow screw 5 is located inside the variable diameter collar 4. The inner wall of the variable diameter collar 4 is a first conical surface 42 with the large end facing upwards. The outer side of the upper end of the hollow screw 5 is provided with a second conical surface 51 that matches the first conical surface 42. The outer side of the lower end of the hollow screw 5 is threadedly connected to the inner side of the fastening ring 3, and the inner side is used to abut against the side wall of the tooling base 1. The hollow screw 5 is generally a hexagonal hollow screw 5.

[0045] The process of changing the diameter of the variable diameter collar 4 is as follows: the hollow screw 5 is screwed downwards into the fastening ring 3. When its second conical surface 51 contacts each of the first conical surfaces 42, the hollow screw 5 continues to move downwards. The second conical surface 51 then pushes the first conical surfaces 42 outwards. At this time, each arc-shaped slider 41 moves outwards along the surface of the fastening ring 3, making the outer diameter of the variable diameter collar 4 larger. When the outer diameter reaches the preset size requirement, the screwing of the hollow screw 5 is stopped. At this time, the outer diameter should match the inner diameter of the part 2 to be processed. During the processing, the position of the variable diameter collar 4 is relatively fixed with the position of the part 2 to be processed, without axial or radial movement, thereby ensuring the positional accuracy of the part 2 to be processed.

[0046] In this embodiment, the fastening ring 3, the arc-shaped slider 41, and the hollow screw 5 are made of alloy tool steel Cr12MoV. This material has high hardness, high wear resistance, high toughness, and good thermal stability, which can ensure that the tooling maintains excellent mechanical properties and dimensional stability during long-term use.

[0047] Combination Figure 2 , Figures 3 to 4 The assembly process in this embodiment is as follows:

[0048] (1) Select the corresponding size of the tooling base 1, then fasten the fastening ring 3 to the tooling base 1 through the annular groove 31, and fasten and lock it to the tooling base 1 through three positioning pins.

[0049] (2) Install each arc-shaped slider 41 in the variable diameter collar 4 onto the fastening ring 3 in sequence, so that the inner diameter of the variable diameter collar 4 is consistent with that of the fastening ring 3.

[0050] (3) Insert the hollow screw 5 from top to bottom between the fastening ring 3 and the tooling base 1.

[0051] (4) Place the suitable workpiece 2 on the fastening ring 3 according to the selected tooling base 1, so that the inner wall of the workpiece 2 abuts against the outer wall of the variable diameter collar 4, and then the subsequent processing of the workpiece 2 can be carried out.

[0052] The above-mentioned collar assembly is suitable for parts with the same inner diameter. If there are other new parts (parts with the same inner diameter), simply rotate the hollow screw 5 downwards according to the inner diameter of the part, stop it when the outer diameter of the variable diameter collar 4 meets the production requirements, and then place the part to start production.

[0053] This invention effectively solves the problem of size mismatch between newly designed parts and existing tooling bases. It eliminates the need to redesign and manufacture new tooling bases, thus shortening the production cycle and reducing production costs. Furthermore, it eliminates the need for structural modifications to existing tooling bases; simply installing the collar device onto the existing tooling base and adjusting the outer diameter of the variable-diameter collar 4 according to the inner diameter of the part to be processed 2 achieves compatibility between the tooling base and the part 2. This collar device has a simple structure, is easy to assemble, and can meet the requirements of automated production lines for tooling positioning and part limiting accuracy.

[0054] 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 the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.

Claims

1. A collar device for a tooling base for machining gear parts, wherein the tooling base (1) is a stepped columnar structure, characterized in that: It includes a coaxially arranged fastening ring (3), a variable diameter collar (4), and a hollow screw (5); The inner side of the lower end of the fastening ring (3) is provided with an annular groove (31) for fitting the fastening ring (3) onto the stepped surface of the tooling base (1). The fastening ring (3) is used to support the part (2) to be processed. The variable diameter collar (4) is located at the upper end of the fastening ring (3) and is composed of multiple arc-shaped sliders (41). In the initial state, the centers of the multiple arc-shaped sliders (41) coincide. The lower end face of each arc-shaped slider (41) is radially connected to the upper end face of the fastening ring (3). The outer wall of the variable diameter collar (4) is used to abut against the inner wall of the part to be machined (2). The inner wall is a first conical surface (42) with the large end facing upward. The hollow screw (5) is located inside the variable diameter collar (4), and its upper outer side is provided with a second conical surface (51) that is compatible with the first conical surface (42); the lower outer side of the hollow screw (5) is threadedly connected to the inner side of the fastening ring (3), and the inner side is used to abut against the side wall of the tooling base (1).

2. The collar device for the tooling base for machining gear parts according to claim 1, characterized in that: Each of the arc-shaped sliders (41) has a T-shaped protrusion (43) in the middle of its lower end face. The inner side of the upper end of the fastening ring (3) is provided with a plurality of T-shaped grooves (32) that correspond one-to-one with the T-shaped protrusions (43) in the radial direction, so as to realize the sliding connection between the lower end face of the arc-shaped slider (41) and the upper end face of the fastening ring (3).

3. The collar device for the tooling base for machining gear parts according to claim 2, characterized in that: The T-shaped protrusion (43) is provided with a guide hole (44), and the corresponding T-shaped groove (32) is provided with a guide pin (33). One end of the guide pin (33) is fixedly installed in the inner end of the corresponding T-shaped groove (32), and the other end is slidably connected to the T-shaped protrusion (43) through the guide hole (44).

4. The collar device for the tooling base for machining gear parts according to claim 1, 2, or 3, characterized in that: The minimum inner diameter of the variable diameter collar (4) is equal to the inner diameter of the fastening ring (3), and the difference between the maximum outer diameter and the minimum outer diameter is ≤5mm.

5. The collar device for the tooling base for machining gear parts according to claim 4, characterized in that: The fastening ring (3), the arc-shaped slider (41), and the hollow screw (5) are made of alloy tool steel Cr12MoV.

6. The collar device for the tooling base for machining gear parts according to claim 5, characterized in that: The annular groove (31) and the tooling base (1) have multiple positioning holes (34) along the axial direction on their horizontal contact surface, which are used to lock the fastening ring (3) onto the tooling base (1) by means of positioning pins.

7. The collar device for the tooling base for machining gear parts according to claim 1, characterized in that: The number of the arc-shaped sliders (41) is four.

8. The collar device of the tool base for machining gear-like parts according to claim 7, characterized in that: The hollow screw (5) is a hexagonal hollow screw.

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