Universal spindle slide machining device and method

Abstract

This invention discloses a universal mandrel slider processing device and method, and provides various auxiliary parts. These auxiliary parts have convenient structures, are easy to process, and have good versatility, suitable for processing various sliders. When grinding the outer diameter of the universal mandrel, rough grinding, semi-finish grinding, and finish grinding employ different clamping methods according to the condition of the part, gradually eliminating stress deformation and improving the machining accuracy. The clamping method simulating usage conditions effectively eliminates assembly errors of various components, ensuring the overall assembly technical requirements are met. It effectively eliminates grinding deformation of thin-walled parts, eliminating the need for high-precision machine tools; qualified products can be processed on ordinary machine tools. This improves processing efficiency, reduces production cycle and cost, provides a basis for the processing of similar products, and is suitable for large-scale industrial use and promotion.

Description

Technical Field

[0001] This invention belongs to the field of gear parts inspection, and specifically relates to a universal mandrel slider processing device and method. Background Technology

[0002] Universal mandrels are widely used for the inspection of gear parts. Multiple sliders mounted on the mandrel slide simultaneously within grooves, with different positions and outer diameters, thus achieving diameter variation. This places higher demands on the dimensional consistency and geometric tolerances of the sliders.

[0003] Overcoming the challenges of clamping, stress deformation, and accurate repeatability of the slider during grinding has always been the key to the finishing of the slider after heat treatment. Existing technologies lack devices and methods to solve these problems, making it impossible to guarantee the consistency of the final finished part's dimensions, parallelism, flatness, and roughness, which makes it difficult to meet usage requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a universal mandrel slider processing device and method to solve the problem that the uniformity of dimensions, parallelism, flatness and roughness of the precision-machined universal mandrel slider do not meet the requirements for use in the prior art.

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

[0006] A universal mandrel slider processing device includes a universal mandrel slider and a universal mandrel, wherein the universal mandrel has a slanted groove; the universal mandrel slider includes six processing surfaces A, B, C, D, E, and F, and the universal mandrel slider can be fixed on a high-precision flat-jaw vise on a surface grinder worktable; one side of the universal mandrel slider is a slanted surface, which matches the slanted groove of the universal mandrel, and the device also includes an end face positioning ring, a rough grinding positioning ring, a first fine grinding positioning ring, a second fine grinding positioning ring, and a limiting ring;

[0007] The end face positioning ring can be fitted onto a universal mandrel, and the distance between the inner hole of the end face positioning ring and the outer circle of the universal mandrel is no greater than 0.01mm; the parallelism of the two end faces of the end face positioning ring is no greater than 0.003mm, and the perpendicularity of the two end faces to the inner hole is no greater than 0.003mm; multiple bolt holes perpendicular to the central axis are evenly opened on the outer wall of the end face positioning ring.

[0008] The outer wall of the rough grinding positioning ring is evenly provided with multiple bolt holes perpendicular to the central axis;

[0009] The coaxiality of the outer circle and inner hole of the first and second precision-ground positioning rings is no greater than 0.003 mm, and the roughness is no greater than Ra0.4.

[0010] The inner hole dimensions of the first and second precision-ground positioning rings are respectively matched with the F and E surface dimensions of the universal mandrel slider, and the gap formed between the inner holes of the first and second precision-ground positioning rings and the universal mandrel slider after assembly is no greater than 0.01mm.

[0011] The inner hole of the limiting ring has an annular groove, and the perpendicularity of the annular groove to the center of the inner hole of the limiting ring is no more than 0.003 mm; the clearance between the annular groove of the limiting ring and the D and G surfaces of the universal mandrel slider is 0.02-0.03 mm.

[0012] The present invention also has the following features:

[0013] Furthermore, the inner hole size of the first precision-ground positioning ring is in the range of ￠24-￠100mm;

[0014] The inner diameter of the second precision-ground positioning ring ranges from ￠30 to ￠106 mm.

[0015] A method for machining a universal mandrel slider, the method being based on the aforementioned universal mandrel slider machining device, includes the following steps:

[0016] Step 1: Use a high-precision flat-jaw vise on a surface grinder table to fix and clamp the universal mandrel slider assembly. The universal mandrel slider assembly includes multiple universal mandrel sliders arranged side by side. The multiple universal mandrel sliders form six machining surfaces: A, B, C, D, E, and F. Grind surface C of the universal mandrel slider assembly until grinding is complete.

[0017] Step 2: Align the E side of the universal mandrel slider assembly, flip the high-precision flat-jaw vise, and grind the D side of the universal mandrel slider assembly until grinding is complete.

[0018] Step 3: Place the universal mandrel slider assembly into the universal mandrel's groove, ensuring the universal mandrel slider assembly is flush against the bottom surface of the universal mandrel's groove. Use the end face positioning ring and the rough grinding positioning ring to fix the left and right sides of the universal mandrel slider assembly into a whole. Then, install this whole assembly on the center of an external cylindrical grinding machine and grind the E and F surfaces of the universal mandrel slider assembly until grinding is complete.

[0019] When grinding surface E, the rough grinding positioning ring is installed on surface F of the universal mandrel slider assembly;

[0020] When grinding surface F, install the rough grinding positioning ring on surface E of the universal mandrel slider assembly;

[0021] Step 4: Remove the rough grinding positioning ring, fix the first fine grinding positioning ring on the E surface of the universal mandrel slider assembly to form a whole, and install the whole on the center of the external cylindrical grinding machine to perform semi-fine grinding on the F surface of the universal mandrel slider assembly until the semi-fine grinding is completed.

[0022] Step 5: Remove the first fine grinding positioning ring, fix the second fine grinding positioning ring on the F surface of the universal mandrel slider assembly to form a whole, and install the whole on the center of the external cylindrical grinding machine to perform semi-fine grinding on the E surface of the universal mandrel slider assembly until the semi-fine grinding is completed.

[0023] Step 6: Remove the second precision grinding positioning ring, use a high-precision flat-jaw vise on a surface grinder to fix and clamp the universal mandrel slider assembly, and grind the G surface of the universal mandrel slider assembly until the grinding is completed.

[0024] Step 7: Use a limiting ring to fix it to one side of the universal mandrel, press the universal mandrel slider assembly against the universal mandrel's groove, and use the first fine-grinding positioning ring to fix it on the F surface of the universal mandrel slider assembly to form a whole; fix this whole assembly on the center of the external cylindrical grinding machine, and fine-grind the E surface of the universal mandrel slider assembly until fine grinding is completed;

[0025] Step 8: Remove the first fine grinding positioning ring and use the second fine grinding positioning ring to fix it on the E surface of the universal mandrel slider assembly to form a whole; fix the whole assembly on the center of the external cylindrical grinding machine and fine grind the F surface of the universal mandrel slider assembly until the fine grinding is completed.

[0026] Complete the machining of the universal mandrel slider assembly.

[0027] Furthermore, the universal mandrel slider assembly includes three universal mandrel sliders arranged side by side.

[0028] Furthermore, in steps 5 and 6, when the universal mandrel slider assembly is precision ground, the feed rate is no more than 0.003 mm and the rotation speed is no more than 45 r / min.

[0029] Compared with the prior art, the present invention has the following technical effects:

[0030] The universal mandrel slider processing device and method of the present invention provides a variety of auxiliary parts. These auxiliary parts have convenient structures, are easy to process, have good versatility, and are suitable for processing various sliders. When grinding the outer circle of the universal mandrel, rough grinding, semi-finish grinding, and fine grinding adopt different clamping methods according to the condition of the part, gradually eliminating the stress deformation of the part and gradually improving the machining accuracy of the part.

[0031] The clamping method, which simulates usage conditions, effectively eliminates assembly errors of various components and ensures the overall assembly technical requirements are met. It effectively eliminates grinding deformation of thin-walled parts, allowing qualified products to be processed on ordinary machine tools without the need for high-precision machine tools. This improves processing efficiency, reduces production cycle and cost, provides a basis for processing similar products, and is suitable for large-scale industrial use and promotion. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the universal mandrel slider structure in this invention;

[0033] Figure 2 This is a schematic diagram of the universal mandrel structure in this invention;

[0034] Figure 3 This is a schematic diagram of the end face positioning ring structure in this invention;

[0035] Figure 4 This is a schematic diagram of the coarse grinding positioning ring structure in this invention;

[0036] Figure 5 This is a schematic diagram of the first precision-ground positioning ring structure in this invention;

[0037] Figure 6 This is a schematic diagram of the second precision-ground positioning ring structure in this invention;

[0038] Figure 7 This is a schematic diagram of the limiting ring structure in this invention;

[0039] Figure 8 This is a schematic diagram of the clamping method in step 1 of the present invention;

[0040] Figure 9 This is a schematic diagram of the clamping method in step 2 of the present invention;

[0041] Figure 10 This is a schematic diagram of the clamping method in steps 4 and 5 of this invention;

[0042] Figure 11 This is a schematic diagram of the clamping method in step 6 of the present invention;

[0043] Figure 12 This is a schematic diagram of the clamping method in steps 7 and 8 of this invention.

[0044] The meanings of the labels in the figure are as follows: 1. Universal mandrel slider; 2. Universal mandrel; 3. End face positioning ring; 4. Rough grinding positioning ring; 5. First fine grinding positioning ring; 6. Second fine grinding positioning ring; 7. Limiting ring; 8. Annular groove. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, all components in this invention are known in the prior art. For example, the universal spindle slider uses a commonly known universal spindle slider.

[0046] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0047] like Figure 1-7 As shown, a universal mandrel slider processing device includes a universal mandrel slider 1 and a universal mandrel 2, with a slanted groove formed on the universal mandrel 2; the universal mandrel slider 1 includes six processing surfaces A, B, C, D, E, and F, and can be fixed on a surface grinder worktable; one side of the universal mandrel slider 1 is a slanted surface, which matches the slanted groove of the universal mandrel 2;

[0048] It should be noted that the universal mandrel slider 1 in this invention is a standard part known in the prior art. Such a structure exists in the art, and its structure is as follows: Figure 1 As shown, the names of the six machining surfaces A, B, C, D, E, and F are names known in the art.

[0049] It also includes an end face positioning ring 3, a rough grinding positioning ring 4, a first fine grinding positioning ring 5, a second fine grinding positioning ring 6, and a limiting ring 7;

[0050] The end face positioning ring 3 can be fitted onto the universal mandrel 2, and the distance between the inner hole of the end face positioning ring 3 and the outer circle of the universal mandrel 2 is not greater than 0.01mm; the parallelism of the two end faces of the end face positioning ring 3 is not greater than 0.003mm, and the perpendicularity of the two end faces to the inner hole is not greater than 0.003mm; multiple bolt holes perpendicular to the central axis are evenly opened on the outer wall of the end face positioning ring 3; the end face positioning ring 3 is circular, and the multiple bolt holes perpendicular to the central axis are used to assemble set screws to fix the part onto the universal mandrel 2.

[0051] Multiple bolt holes perpendicular to the central axis are evenly opened on the outer wall of the rough-ground positioning ring 4; the bolt holes are used to assemble bolts, and by rotating the bolts, the bolt end face is pressed against the universal mandrel slider 1.

[0052] The coaxiality between the outer circle and the inner hole of the first precision-ground positioning ring 5 and the second precision-ground positioning ring 6 is no greater than 0.003 mm, and the roughness is no greater than Ra0.4.

[0053] The inner hole dimensions of the first fine-ground positioning ring 5 and the second fine-ground positioning ring 6 are respectively matched with the dimensions of the F and E surfaces of the universal mandrel slider 1, and the gap formed between the inner holes of the first fine-ground positioning ring 5 and the second fine-ground positioning ring 6 and the universal mandrel slider 1 after assembly is no greater than 0.01mm.

[0054] The purpose of ensuring that the coaxiality between the inner hole and the outer circle of the first precision-ground positioning ring 5 and the second precision-ground positioning ring 6 is no greater than 0.003mm is to detect the runout of the outer circle after assembly, and to verify whether the universal mandrel slider 1 is assembled correctly and the repeatability of positioning accuracy.

[0055] The inner hole dimensions of the first precision-ground positioning ring 5 and the second precision-ground positioning ring 6 correspond one-to-one with the dimensions of the outer circle F surface and E surface of the universal mandrel slider 1. The inner hole dimension ￠d of the first precision-ground positioning ring 5 is determined by the diameter ￠r of the E surface of the universal mandrel slider 1, and the common range is ￠24-￠100mm; the inner hole dimension ￠D of the second precision-ground positioning ring 6 is determined by the diameter ￠R of the F surface of the universal mandrel slider 1, and the common size range is ￠30-￠106mm.

[0056] The inner hole of the limiting ring 7 has an annular groove 8, and the perpendicularity of the annular groove 8 to the center of the inner hole of the limiting ring 7 is no greater than 0.003mm. The dimensional clearance formed by the limiting ring 7 and the D and G surfaces of the universal spindle slider 1 is 0.02-0.03mm. This ensures that the sliding consistency of the universal spindle slider 1 from the small end to the large end is no greater than 0.01mm, while also serving a limiting function.

[0057] A method for machining a universal mandrel slider, the method being based on the aforementioned universal mandrel slider machining device, includes the following steps:

[0058] During each grinding step, the consistency of the dimensions of the multiple universal spindle sliders 1 in the universal spindle slider group should be ensured.

[0059] Step 1, as follows Figure 8 As shown, a high-precision flat-jaw vise is used to fix and clamp the universal mandrel slider assembly on a surface grinder table. The universal mandrel slider assembly includes multiple universal mandrel sliders 1 arranged in parallel. The multiple universal mandrel sliders 1 form six machining surfaces A, B, C, D, E, and F of the universal mandrel slider assembly. The C surface of the universal mandrel slider assembly is ground until the grinding is completed.

[0060] Step 2, as follows Figure 9 As shown, align the E side of the universal mandrel slider assembly, flip the high-precision flat-jaw vise, and grind the D side of the universal mandrel slider assembly until the grinding is complete;

[0061] Step 3: Place the universal mandrel slider assembly into the groove of the universal mandrel 2, ensuring the universal mandrel slider assembly is flush against the bottom surface of the groove of the universal mandrel 2. Use the end face positioning ring 3 and the rough grinding positioning ring 4 to fix the left and right sides of the universal mandrel slider assembly into a whole. Then, install this whole assembly on the center of an external cylindrical grinding machine and grind the E and F surfaces of the universal mandrel slider assembly until the grinding is complete.

[0062] When grinding surface E, the rough grinding positioning ring 4 is installed on surface F of the universal mandrel slider assembly;

[0063] When grinding surface F, the rough grinding positioning ring 4 is installed on surface E of the universal mandrel slider assembly;

[0064] The end face of the end face positioning ring 3 fits tightly against the end face of the universal mandrel slider assembly, serving a positioning function. By tightening the bolts, the universal mandrel slider assembly is fixed in the inclined groove of the universal mandrel 2, serving a clamping function. Specifically, when grinding surface E, the rough grinding positioning ring 4 is installed on surface F of the universal mandrel slider.

[0065] Step 4, as follows Figure 10 As shown, remove the rough grinding positioning ring 4, fix the first fine grinding positioning ring 5 on the E surface of the universal mandrel slider assembly to form a whole, and install the whole on the center of the external cylindrical grinding machine to perform semi-fine grinding on the F surface of the universal mandrel slider assembly until the semi-fine grinding is completed.

[0066] Step 5: Remove the first fine grinding positioning ring 5, fix the second fine grinding positioning ring 6 on the F surface of the universal mandrel slider assembly to form a whole, and install the whole on the center of the external cylindrical grinding machine to perform semi-fine grinding on the E surface of the universal mandrel slider assembly until the semi-fine grinding is completed.

[0067] Step 6, as follows Figure 11 As shown, remove the second precision grinding positioning ring 6, use a high-precision flat-jaw vise on a surface grinder to fix and clamp the universal mandrel slider assembly, and grind the G surface of the universal mandrel slider assembly until the grinding is completed.

[0068] Step 7, as follows Figure 12 As shown, a limiting ring 7 is used to fix the universal mandrel 2 to one side, and the universal mandrel slider assembly is pressed against the slide groove of the universal mandrel 2. The first fine grinding positioning ring 6 is used to fix the universal mandrel slider assembly on the F surface to form a whole. The whole assembly is fixed on the center of the external cylindrical grinding machine, and the E surface of the universal mandrel slider assembly is fine ground until the fine grinding is completed.

[0069] Step 8: Remove the first fine grinding positioning ring 6, and use the second fine grinding positioning ring 7 to fix it on the E surface of the universal mandrel slider assembly to form a whole; fix the whole assembly on the center of the external cylindrical grinding machine, and fine grind the F surface of the universal mandrel slider assembly until the fine grinding is completed;

[0070] Complete the machining of the universal mandrel slider assembly.

[0071] As a preferred embodiment, the universal mandrel slider assembly includes three universal mandrel sliders 1 arranged side by side. A high-precision flat-jaw vise simultaneously clamps the universal mandrel sliders 1 to grind the C-surface, ensuring dimensional consistency of the C-surface and improving processing efficiency.

[0072] As a preferred option, when precision grinding the universal mandrel slider assembly, the feed rate should not exceed 0.003 mm and the rotation speed should not exceed 45 r / min to ensure the quality and precision of the machined surface.

Claims

1. A universal mandrel slider processing device, comprising a universal mandrel slider (1) and a universal mandrel (2), wherein the universal mandrel (2) is provided with a slanted groove; the universal mandrel slider (1) includes six processing surfaces A, B, C, D, E, and F; the universal mandrel slider (1) can be fixed on a high-precision flat-jaw vise on a surface grinding table; one side of the universal mandrel slider (1) is a slanted surface, which matches the slanted groove of the universal mandrel (2), characterized in that, It also includes an end face positioning ring (3), a rough grinding positioning ring (4), a first fine grinding positioning ring (5), a second fine grinding positioning ring (6), and a limiting ring (7); The end face positioning ring (3) can be fitted onto the universal spindle (2) and the distance between the inner hole of the end face positioning ring (3) and the outer circle of the universal spindle (2) is not greater than 0.01mm; the parallelism of the two end faces of the end face positioning ring (3) is not greater than 0.003mm, and the perpendicularity of the two end faces to the inner hole is not greater than 0.003mm; a plurality of bolt holes perpendicular to the central axis are evenly opened on the outer wall of the end face positioning ring (3); The outer wall of the rough grinding positioning ring (4) is uniformly provided with multiple bolt holes perpendicular to the central axis; The coaxiality of the outer circle and inner hole of the first fine-ground positioning ring (5) and the second fine-ground positioning ring (6) is not greater than 0.003 mm, and the roughness is not greater than Ra0.

4. The inner hole dimensions of the first fine-ground positioning ring (5) and the second fine-ground positioning ring (6) are respectively matched with the F-side and E-side dimensions of the universal mandrel slider (1), and the gap formed between the inner hole of the first fine-ground positioning ring (5) and the second fine-ground positioning ring (6) and the universal mandrel slider (1) after assembly is no greater than 0.01mm. The inner hole of the limiting ring (7) has an annular groove (8), and the perpendicularity of the annular groove (8) to the center of the inner hole of the limiting ring (7) is no greater than 0.003mm; the fit clearance between the annular groove (8) of the limiting ring (7) and the D and G surfaces of the universal mandrel slider (1) is 0.02-0.03mm.

2. The universal mandrel slider processing device as described in claim 1, characterized in that, The inner hole size of the first precision-ground positioning ring (5) ranges from ￠24 to ￠100 mm; The inner hole size of the second precision-ground positioning ring (6) ranges from ￠30 to ￠106 mm.

3. A method for machining a universal mandrel slider, the method being based on the universal mandrel slider machining device described in claim 2, characterized in that, Includes the following steps: Step 1: Use a high-precision flat-jaw vise on a surface grinder to fix and clamp the universal mandrel slider assembly. The universal mandrel slider assembly includes multiple universal mandrel sliders (1) arranged in parallel. The multiple universal mandrel sliders (1) form six machining surfaces A, B, C, D, E, and F of the universal mandrel slider assembly. Grind the C surface of the universal mandrel slider assembly until grinding is completed. Step 2: Align the E side of the universal mandrel slider assembly, flip the high-precision flat-jaw vise, and grind the D side of the universal mandrel slider assembly until grinding is complete. Step 3: Place the universal spindle slider assembly into the groove of the universal spindle (2), so that the universal spindle slider assembly is close to the bottom surface of the groove of the universal spindle (2). Use the end face positioning ring (3) and the rough grinding positioning ring (4) to fix the left and right sides of the universal spindle slider assembly to form a whole. Then install the whole on the center of the external cylindrical grinding machine and grind the E and F surfaces of the universal spindle slider assembly until the grinding is completed. When grinding surface E, the rough grinding positioning ring (4) is installed on surface F of the universal mandrel slider assembly; When grinding surface F, the rough grinding positioning ring (4) is installed on surface E of the universal mandrel slider assembly; Step 4: Remove the rough grinding positioning ring (4), fix the first fine grinding positioning ring (5) on the E surface of the universal mandrel slider assembly to form a whole, and install the whole on the center of the external cylindrical grinding machine to perform semi-fine grinding on the F surface of the universal mandrel slider assembly until the semi-fine grinding is completed. Step 5: Remove the first fine grinding positioning ring (5), fix the second fine grinding positioning ring (6) on the F surface of the universal mandrel slider assembly to form a whole, and install the whole on the center of the external cylindrical grinding machine to perform semi-fine grinding on the E surface of the universal mandrel slider assembly until the semi-fine grinding is completed. Step 6: Remove the second precision grinding positioning ring (6), use a high-precision flat-jaw vise on a surface grinder to fix and clamp the universal mandrel slider assembly, and grind the G surface of the universal mandrel slider assembly until the grinding is completed; Step 7: Use the limiting ring (7) to fix it on one side of the universal mandrel (2), press the universal mandrel slider assembly against the groove of the universal mandrel (2), and use the first fine grinding positioning ring (5) to fix it on the F surface of the universal mandrel slider assembly to form a whole; fix the whole on the center of the external cylindrical grinding machine, and fine grind the E surface of the universal mandrel slider assembly until the fine grinding is completed; Step 8: Remove the first fine grinding positioning ring (5), and use the second fine grinding positioning ring (6) to fix it on the E surface of the universal mandrel slider assembly to form a whole; fix the whole assembly on the center of the external cylindrical grinding machine, and fine grind the F surface of the universal mandrel slider assembly until the fine grinding is completed; Complete the machining of the universal mandrel slider assembly.

4. The method for machining a universal mandrel slider as described in claim 3, characterized in that, The universal spindle slider group includes three universal spindle sliders (1) arranged in parallel.

5. The method for machining a universal mandrel slider as described in claim 4, characterized in that, In steps 5 and 6, when the universal mandrel slider assembly is precision ground, the feed rate should not exceed 0.003 mm and the rotation speed should not exceed 45 r / min.

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