Center stop self-tapping thread machining auxiliary fixture

Abstract

This utility model discloses an auxiliary fixture for machining self-tapping threads on a center stop, comprising: a base, a first positioning component, a second positioning component, and a cover plate; the first positioning component is mounted on the base, and the center stop to be machined is placed inside the first positioning component; the cover plate is connected to the base via the second positioning component; the cover plate covers the top of the base and the first positioning component. This utility model provides an auxiliary fixture for machining self-tapping threads on a center stop that is low in manufacturing cost, provides stable fixation, improves processing efficiency, and reduces scrap rate.

Description

Technical Field

[0001] This utility model belongs to the field of processing equipment, and more specifically relates to an auxiliary fixture for machining self-tapping threads of a center stopper. Background Technology

[0002] During the machining of the center stopper part, it is necessary to machine the self-tapping threads on the center brake.

[0003] like Figure 1 As shown, the center stop is fishbone shaped with three mounting holes in the center. Internal threads need to be tapped inside these holes for easy connection and fixation. Due to the fishbone shape, existing clamps cannot secure it. Excessive clamping force will deform the component, resulting in scrap, while insufficient clamping force will cause the center stop to rotate during the tapping process, preventing the tapping from being completed.

[0004] When tapping mounting holes, the lack of stable clamping leads to issues such as stripped threads and misaligned threads. Therefore, existing technologies lack an auxiliary fixture that can securely fix irregularly shaped components, such as center stoppers, which are difficult to clamp, thereby improving processing efficiency and reducing scrap rates. Summary of the Invention

[0005] To address the aforementioned problems, this utility model provides a center stop self-tapping thread machining auxiliary fixture that is low in manufacturing cost, provides stable fixation, improves processing efficiency, and reduces scrap rate.

[0006] According to one aspect of the present invention, a self-tapping thread machining auxiliary fixture for a center stop includes: a base, a first positioning component, a second positioning component, and a cover plate;

[0007] The base is provided with a first positioning component, and the center brake to be processed is placed inside the first positioning component;

[0008] The cover plate is connected to the base via a second positioning component;

[0009] The cover plate fits over the base and the top of the first positioning component. The base provides a relatively horizontal and stable machining platform for the center stop to be machined, the first positioning component helps to define the position of the center stop, and the second positioning component helps to ensure that the cover plate is accurately connected in preparation for tapping the absolute mounting hole.

[0010] In some embodiments, the first positioning component includes a plurality of limiting grooves disposed on the top of the base, with 3 to 6 limiting grooves arranged parallel to each other on the base. Providing multiple limiting grooves facilitates the installation of multiple center stops to be processed, thereby improving processing efficiency during tapping.

[0011] In some embodiments, the cross-section of the limiting groove is the same as the cross-section of the center stop, and the center stop is installed in the limiting groove. The fact that the cross-section of the limiting groove is the same as the cross-section of the center stop facilitates a more secure fixation of the center stop.

[0012] In some embodiments, a first through hole is provided at the bottom of the limiting groove. The number of first through holes is the same as the number of threaded holes on the center stop, and the position of the first through holes is the same as the position of the threaded holes on the center stop. The first mounting hole facilitates the provision of space for the tap to move down and complete the internal thread machining of the entire threaded hole.

[0013] In some embodiments, the second positioning component includes a positioning groove on the base and a positioning protrusion on the cover plate, the positioning groove and the positioning protrusion being matched. Matching the positioning groove with the positioning protrusion facilitates precise positioning of the cover plate.

[0014] In some implementations, at least two sets of positioning grooves and positioning protrusions are provided.

[0015] In some embodiments, the cover plate is provided with a number of guide holes, the number of which is the same as the number of threaded holes on the center stop, and the positions of the guide holes are the same as the positions of the threaded holes on the center stop. The guide holes and the first through hole are coaxially arranged. The coaxial arrangement of the guide holes, threaded holes, and the first through hole facilitates precise guidance of the tap for threading internal threads.

[0016] In some implementations, the guide hole is a tapered hole with a top diameter larger than its bottom diameter. The tapered hole facilitates tap entry for machining the threaded hole.

[0017] Compared with existing technologies, this utility model has the following advantages: low manufacturing cost, stable fixation, improved processing efficiency, and reduced scrap rate. This utility model provides a relatively horizontal and stable processing platform for the center stop to be processed via a base. The first positioning component facilitates defining the position of the center stop, and the second positioning component ensures precise connection of the cover plate for tapping the mounting hole. Multiple limiting grooves facilitate the installation of multiple center stops to be processed, improving processing efficiency during tapping. The cross-section of the limiting groove is the same as that of the center stop, facilitating a more stable fixation of the center stop. The first mounting hole provides space for the tap to move downwards to complete the internal thread processing of the entire threaded hole. The matching positioning groove and positioning protrusion facilitate precise connection of the cover plate position. The coaxial arrangement of the guide hole, threaded hole, and first through hole facilitates precise guidance of the tap for internal thread processing. The tapered hole facilitates tap entry for processing the threaded hole. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the center stop;

[0019] Figure 2 This is an exploded view of the auxiliary fixture for self-tapping thread processing of the center stop of this utility model;

[0020] Figure 3 This is a schematic diagram of the base of the auxiliary fixture for self-tapping thread processing of the center stop of this utility model;

[0021] Figure 4 This is a sectional view of the cover plate of the auxiliary fixture for self-tapping thread processing of the center stop of this utility model;

[0022] Figure 5 This is a schematic diagram showing the usage status of the auxiliary fixture for self-tapping thread processing of the center stop of this utility model. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.

[0025] like Figure 2 As shown, the auxiliary fixture for self-tapping thread processing of the center stopper described in this utility model includes: a base 1, a first positioning component 2, a second positioning component 3, and a cover plate 4;

[0026] The base 1 is provided with a first positioning component 2, and the center brake to be processed is placed inside the first positioning component 2;

[0027] The cover plate 4 is connected to the base 1 via the second positioning component 3;

[0028] The cover plate 4 is fitted onto the top of the base 1 and the first positioning component 2. The base 1 provides a relatively horizontal and stable machining platform for the center stop to be machined, the first positioning component 2 helps to define the position of the center stop, and the second positioning component 3 helps to ensure that the cover plate 4 is accurately connected in preparation for tapping the absolute mounting hole.

[0029] The first positioning component 2 includes several limiting grooves 21 disposed on the top of the base 1. There are 3 to 6 limiting grooves 21, which are arranged parallel to each other on the base 1. By providing multiple limiting grooves 21, it is convenient to install multiple center stops to be processed, thereby improving processing efficiency during tapping.

[0030] In this utility model, the limiting groove 21 is sufficient to fix the center stop. In fact, there are many parts with irregular shapes that are not convenient for clamping and fixing rotating holes or tapping. This utility model can provide effective fixation for them.

[0031] like Figure 3 As shown, the cross-section of the limiting groove 21 is the same as the cross-section of the center stop, and the center stop is installed in the limiting groove 21. The fact that the cross-section of the limiting groove 21 is the same as the cross-section of the center stop facilitates a more stable fixation of the center stop.

[0032] The bottom of the limiting groove 21 is provided with a first through hole 11. The number of first through holes 11 is the same as the number of threaded holes on the center stop, and the position of the first through holes 11 is the same as the position of the threaded holes on the center stop. The first mounting hole facilitates the downward movement of the tap to complete the internal thread machining of the entire threaded hole. During the tap machining of the internal thread, completing the machining of the entire internal thread will inevitably cause the front part of the tap to completely extend out of the threaded hole. The first through hole 11 accommodates this, preventing the tap from hitting the base 1 and allowing the complete machining of the internal thread to be completed.

[0033] However, it should be noted that the diameter of the first through hole 11 needs to be 2-3mm larger than the diameter of the threaded hole. If the diameter of the first through hole 11 is too small, the tap will not be able to move down and the internal thread cannot be fully machined.

[0034] The second positioning component 3 includes a positioning groove 31 disposed on the base 1 and a positioning protrusion 32 disposed on the cover plate 4, wherein the positioning groove 31 and the positioning protrusion 32 are matched. The matching of the positioning groove 31 and the positioning protrusion 32 facilitates precise connection of the position of the cover plate 4.

[0035] At least two sets of positioning grooves 31 and positioning protrusions 32 are provided. Positioning grooves 31 and positioning protrusions 32 are generally rectangular, but they can also be set as cylindrical positioning pins. However, if positioning grooves 31 and positioning protrusions 32 are cylindrical positioning pins, more than two sets must be provided, because the rotation of the cylindrical shape will cause the connection position of the cover plate 4 to be unstable.

[0036] like Figure 4As shown, the cover plate 4 is provided with a number of guide holes 41. The number of guide holes 41 is the same as the number of threaded holes on the center stop, and the position of the guide holes 41 is the same as the position of the threaded holes on the center stop. The guide holes 41 are coaxially arranged with the first through hole 11. The coaxial arrangement of the guide holes 41, threaded holes and the first through hole 11 facilitates precise guidance of the tap to machine the internal thread.

[0037] The guide hole 41 is a tapered hole with a top diameter larger than its bottom diameter. The tapered hole facilitates tap entry for machining the threaded hole. The top diameter of the guide hole 41 should be slightly larger than the diameter of the threaded hole.

[0038] like Figure 5 As shown, during use, the center stoppers to be processed are placed into the limiting groove 21 in sequence. It should be noted that the beginning and end of multiple center stoppers must be consistent. Of course, if the cross section of the limiting groove 21 is the same as the cross section of the center stopper, this problem does not need to be considered.

[0039] Then the cover plate 4 is closed, the positioning protrusion 32 is fully incorporated into the positioning groove 31, and the cover plate 4 is pushed. The cover plate 4 will not move. At this time, the guide hole 41, the threaded hole and the first through hole 11 are coaxial.

[0040] Finally, use a tap to tap the threaded holes on the center stop in sequence;

[0041] After completion, the center stopper of the base 1 that has completed tapping is removed.

[0042] Of course, this utility model can also fix the cover plate 4 to the base 1 with bolts, and install it on the machining center as a special auxiliary fixture as a special jig for drilling the center stop and machining the internal thread. Because the position coordinates of the guide hole 41 and the first through hole 11 are fixed, the machining program is also relatively easy to edit. After the base 1 is fixed and the tool setting is completed, the center stop, which has undergone external machining, is placed into the limiting groove 21 in sequence. Then, the cover plate 4 is closed, and the positioning protrusion 32 is fully incorporated into the positioning groove 31. The position of the cover plate 4 is fixed with bolts. The machining program is run, the rotary tool rotates and moves to the coordinates of the first mounting hole, moves down, drills, and lifts up; all mounting holes are machined in sequence. Then, the tool is changed, and the tool is moved to the initial position and replaced with a threading tool. The threading tool rotates and moves to the coordinates of the first mounting hole, moves down, taps, reverses, and lifts up; all mounting holes are machined internally in sequence. The tool is moved to the initial position and replaced with a rotary tool. The cover plate 4 is opened, the machined center stop is taken out, and the externally machined center stop is replaced. The above steps are repeated, which is more efficient.

[0043] This utility model is made of 45# steel, which has good strength and toughness, is relatively inexpensive, has good processing performance, is reusable and recyclable, and meets environmental protection requirements.

[0044] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A center stop self-tapping machining aid jig, characterized by, The utility model relates to a center brake machining device, including: Base, first positioning assembly, second positioning assembly and cover plate; The first positioning assembly is equipped on the base, and the center brake to be processed is placed in the first positioning assembly; The cover plate is connected with the base through the second positioning assembly; The cover plate covers the top of the base and the first positioning assembly.

2. The center stop self-tapping machining aid jig of claim 1, wherein, The first positioning assembly includes a plurality of limiting grooves arranged on the top of the base, the limiting grooves are provided with 3-6, and the limiting grooves are arranged in parallel on the base.

3. The center stop self-tapping machining aid of claim 2, wherein, The cross section of the limiting groove is same with the cross section of the center brake, and the center brake is installed in the limiting groove.

4. The center stop self-tapping machining aid jig of claim 3, wherein, The bottom of the limiting groove is provided with a first through hole, the number of the first through hole is same with the number of the threaded hole on the center brake, and the position of the first through hole is same with the position of the threaded hole on the center brake.

5. The center stop self-tapping machining aid of claim 4, wherein, The second positioning assembly includes a positioning groove arranged on the base and a positioning convex arranged on the cover plate, and the positioning groove is matched with the positioning convex.

6. The center stop self-tapping machining aid jig of claim 5, wherein, The positioning groove and the positioning convex are provided with at least two groups.

7. The center stop self-tapping machining aid of claim 6, wherein, The cover plate is provided with a plurality of guide holes, the number of the guide hole is same with the number of the threaded hole on the center brake, the position of the guide hole is same with the position of the threaded hole on the center brake, and the guide hole is coaxially arranged with the first through hole.

8. The center stop self-tapping machining aid of claim 7, wherein, The guide hole is a taper hole with the diameter of the top end being larger than the diameter of the bottom.

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