Machining device and machining method for annular eccentric spigot part

Abstract

The invention discloses a machining device and method for an annular eccentric spigot part. The machining device comprises a bottom plate, a pin is arranged in the middle of the bottom plate, the annular eccentric spigot part is arranged on the bottom plate, and the annular eccentric spigot part is connected and fastened to the bottom plate through screws. The machining device is used for positioning and aligning to machine phi D1 and phi D2 so as to guarantee the dimensional precision of the phi D1 and phi D2 and the dimensional precision of the eccentric distance L between the centers of the phi D1 and phi D2 and the center of phi D. The machining device has the advantages that the requirement for machining equipment is not high, small and medium-sized machining factories have the equipment capacity, and the machining device can be used in cooperation with existing equipment for machining. And meanwhile, the machining efficiency is high, the machining cost is low, the requirement for equipment operation skills is not high, the machining quality is easy to guarantee, and meanwhile a thought for solving problems is provided for machining of similar parts.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mechanical processing, and particularly relates to a processing device and a processing method for an annular eccentric collar part. BACKGROUND

[0002] As shown in the annular eccentric collar part, Figure 1 2 The existing processing process needs to pass through the steps of material preparation, vertical lathe, heat treatment, vertical lathe, numerical control milling machine and precision boring machine in sequence. The implementation of the processing method depends on the fact that the manufacturing unit has medium and large numerical control milling center equipment, and the accuracy of the processing equipment is strictly required. The first disadvantage is that small and medium-sized processing plants do not have the production requirements of medium and large numerical control milling center equipment, and the second disadvantage is that the processing efficiency is low, the processing cost is high, the processing quality depends on the skill level of the equipment and the equipment operator, and the processing of the collar root empty hole cannot be realized. SUMMARY

[0003] To solve the above technical problems, the application provides a processing device and a processing method for an annular eccentric collar part.

[0004] The application is implemented through the following technical solutions.

[0005] The application provides a processing device for an annular eccentric collar part, which comprises a bottom plate, a pin is arranged in the middle of the bottom plate, an annular eccentric collar part is arranged on the bottom plate, and the annular eccentric collar part is connected and fastened with the bottom plate through screws.

[0006] Preferably, a mounting groove is arranged on the bottom plate, and the cross section of the mounting groove is circular.

[0007] Preferably, the pin is in a cylindrical shape, and a processing hole is arranged on the pin.

[0008] Preferably, a first groove is arranged on the annular eccentric collar part, and a through hole is arranged in the first groove.

[0009] Preferably, the first groove and the through hole are arranged non-coaxially with the body of the annular eccentric collar part.

[0010] A use method of a processing device for an annular eccentric collar part, comprising the following steps: A1: using a lathe and a milling machine to coarsely process an annular eccentric collar part raw material to obtain a part blank; A2: heat treating the part blank; A3: using a lathe to semi-finish process the part blank; A5: using a lathe, a boring machine and a processing device to finish process the part blank to obtain an annular eccentric collar part.

[0011] ​Preferably, in the step A1, the rough machining comprises turning the upper end face and the lower end face of the part blank, and milling the through hole.

[0012] Preferably, in the step A2, the heat treatment comprises the steps of quenching and tempering in sequence: heating the part blank to 802-860℃, holding for 80-100 minutes, and tempering at 360-420℃ after quenching, holding for 2-4 hours.

[0013] Preferably, in the step A3, the semi-finishing machining comprises turning the upper end face, the lower end face and the first groove corresponding to the stopper of the part blank.

[0014] Preferably, in the step A4, the first groove corresponding to the stopper of the part blank is turned to have a flatness of 0.01mm, and the through hole is bored by machining the hole.

[0015] The present application has the following advantages: The present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the front view of the annular eccentric stopper part of the present application; Figure 2 is the top view of the annular eccentric stopper part of the present application; Figure 3 is the front view of the annular eccentric stopper part of the present application after being assembled with the machining device; Figure 4 is the top view of the annular eccentric stopper part of the present application after being assembled with the machining device; Figure 5 is the front view of the bottom plate of the present application; Figure 6 is the top view of the bottom plate of the present application; In the figure: 1-bottom plate, 11-mounting slot, 2-annular eccentric stopper part, 21-first groove, 22-through hole, 201-upper end face of the part blank, 202-lower end face, 3-pin, 31-machining hole, 4-screw. DETAILED DESCRIPTION

[0017] The technical solution of the present application is further described below, but the scope of protection is not limited to the description.

[0018] The outer dimensions of the annular eccentric stop part 2 are between Φ1000mm and Φ1300mm, and the thickness is between 30mm and 70mm. The ΦD, ΦD1, and ΦD2 dimensions are used for radial positioning, and the ΦdH7 and the lower end face of the H dimension are used for axial positioning. Its dimensional accuracy and geometric tolerance are as follows: 1. Radial positioning dimensions and geometric tolerances: ΦD1 is guaranteed by ΦD1H8 (+0.165 0); ΦD2 is guaranteed by ΦD2H8 (+0.165 0); ΦD is guaranteed by ΦDH8 (+0.165 0); The eccentricity L between the centers of ΦD1 and ΦD2 and the center of ΦD is guaranteed to be L±0.02; The coaxiality of ΦD1 and ΦD2 is 0.03.

[0019] 2. Axial positioning dimensions and geometric tolerances: The axial dimension H from the center of ΦdH7 to the bottom surface is guaranteed to be H±0.01; The axial dimension H1 from the center of ΦdH7 to the ΦD stop table surface is guaranteed to be H1±0.01; The parallelism between the ΦD stop surface and the bottom surface is ∥0.02.

[0020] This part can be machined using a medium or large CNC milling machine through a CNC program to ensure the dimensional accuracy of ΦD1 and ΦD2, and the coaxiality of ΦD1 and ΦD2 (◎0.03).

[0021] Example 1: like Figures 1 to 6 As shown, a processing device for an annular eccentric stop part includes a base plate 1, a pin 3 is provided in the middle of the base plate 1, and an annular eccentric stop part 2 is provided on the base plate 1. The annular eccentric stop part is connected and fastened to the base plate 1 by screws 4.

[0022] The base plate 1 is provided with a mounting groove 11, and the mounting groove 11 has a circular cross-section.

[0023] The pin 3 is cylindrical and has a machining hole 31.

[0024] The annular eccentric stop part 2 is provided with a first groove 21, and a through hole 22 is provided in the first groove 21.

[0025] The first groove 21 and through hole 22 are not coaxially arranged with the body of the annular eccentric stop part 2.

[0026] A method for using a machining device for annular eccentric stop parts includes the following steps: A1: using a lathe and a milling machine according to design drawings to rough process the annular eccentric stopper part raw material, and obtain a part blank, A2: heat treating the part blank, A3: using a lathe to semi-finish process the part blank, A5: using a lathe, a boring machine and a processing device to finish process the part blank, and obtain the annular eccentric stopper part.

[0027] In the step A1, the processing equipment is a vertical lathe and a numerical control milling machine, and the rough processing includes turning the upper end surface 201 and the lower end surface 202 of the part blank, and milling a through hole 22, and the specific steps are as follows: The turning tool rotation speed is set to 16 r / min, the cutting depth is 2.5 mm, and the feed per revolution is 0.3 mm / r; B1: turning the upper end surface 201 to be visible, and turning the maximum outer circle with a single side of 3 mm; B2: taking the upper end surface 201 as the support, positioning the outer circle of the raw material, turning the lower end surface 202, and ensuring that the thickness of the raw material has a single side of 3 mm on both sides; B3: moving the raw material to the numerical control milling machine, taking the upper end surface 201 as the support, positioning the outer circle, milling ΦD1 and ΦD2 after finding the circle, and leaving a single side of 3 mm respectively; then drilling 2-ΦCH7, and leaving a single side of 1 mm with a position degree of 0.1; Wherein, ΦD1 and ΦD2 are the upper and lower parts of the through hole 22, and 2-ΦCH7 is the corresponding position of the processing hole 31.

[0028] In the step A2, the heat treatment includes the steps of quenching and tempering in sequence: heating the part blank to 830℃, keeping for 90 minutes, tempering at 390℃ after quenching, keeping for 3 hours, and reaching HRC 35-40 after heat treatment. Through heat treatment, the material processing performance is improved, the material hardness is increased, the material strength and wear resistance are enhanced, and the service life of the part is prolonged.

[0029] In the step A3, the processing equipment is a vertical lathe, and the semi-finish processing includes turning the upper end surface 201, the lower end surface 202 and the first groove 21 corresponding to the stopper of the part blank, and the specific steps are as follows: The tool rotation speed is 16 r / min, the cutting depth is 0.5 mm, and the feed per revolution is 0.12 mm / r; C1: turning the thickness of the upper end surface 201 on the part blank, leaving a single side of 1.5 mm, turning the maximum outer circle with a single side of 1.5 mm, turning ΦD corresponding to the stopper of each surface with a single side of 1.5 mm; the sharp corner between the ΦD cylindrical surface and the lower end surface at the size H±0.01 is empty, the sharp edge between the ΦD cylindrical surface and the upper end surface 201 is chamfered, 2 Φd1H7 positioning pin holes are turned, and 19 counterbore holes are turned. C2: above end surface 201 as support, outer circle positioning, the lower end surface 202, ensure thickness two face respectively have excess single side 1.5mm; C3: above end surface 201 as support, outer circle positioning, find circle processing ΦD1 or ΦD2, processing ΦD1, ΦD2, respectively leave single side 2mm; After the above processing, artificial aging, ensure ΦD1, L±0.02 size accuracy and shape tolerance requirements, release stress, enhance the stability of the material, reduce the deformation of parts.

[0030] In the step A4, the processing equipment is vertical lathe and precision boring machine, the first groove 21 of the part blank is machined to correspond to the stop, so that the flatness is 0.01mm, the through hole 22 is bored by processing hole 31, and the specific steps are as follows: Lathe processing parameters: tool rotation speed 20r / min, cutting depth 0.2mm, feed per revolution 0.12mm / r; D1: the lower end surface 202, the outer circle and the required corresponding chamfer are machined, ensuring that the upper end surface 201 and the ΦD corresponding stop surface have a margin of 1.5mm, and the perpendicularity between the outer circle and the lower end surface 202 is 0.05mm; D2: the lower end surface 202 is used as support, the outer circle is positioned, the upper end surface 201, the corresponding stop surface of ΦD, the corresponding chamfer and the empty symbol are machined, and the parallelism between the thickness of the two surfaces and the corresponding stop surface of ΦD is 0.01mm; D3: the lower end surface 202 is used as support, the upper end surface 203 is pressed tightly, the 2-ΦCH7 rough hole machined in step B3 is straightened, the circle ΦD is found, the 2-ΦCH7 is bored to meet the size accuracy requirements, the ΦM symbol is bored, the size L is ensured to be ±0.01mm, and the ⊥ is 0.01mm; The assembly completed according to the assembly shown in Figure 3 、 Figure 4 is installed on the vertical lathe, the size ΦM corresponding to the cylindrical surface on the bottom plate 1 for clamping, positioning and alignment in the processing device related to the application is found, then the ΦD1, ΦD2 corresponding cylindrical surface and the mouth chamfer surface symbol on the annular eccentric stop part 2 are machined, and the size accuracy and shape tolerance requirements are ensured, and the specific steps are as follows: E1: the part blank is assembled to the processing device to obtain the assembly, and the size accuracy value of the eccentric value L±0.01mm, the surface roughness and the shape tolerance and other related requirements are detected and ensured; E2: the assembly is installed on the vertical lathe, the size ΦM corresponding to the cylindrical surface on the bottom plate 1 for clamping, positioning and alignment in the processing device related to the application is found, then the ΦD1, ΦD2 corresponding cylindrical surface and the mouth chamfer surface symbol on the annular eccentric stop part 2 are machined, and the size accuracy and shape tolerance requirements are ensured, and the specific steps are as follows: E3: Remove the ring eccentric stop part 2.

[0031] Example 2: A processing device and processing method of a ring eccentric stop part, based on example 1, the only difference is that the part blank is heated to 860℃ in heat treatment, and the holding time is 100 minutes. The tempering temperature after quenching is 420℃, and the holding time is 4 hours.

[0032] Example 3: A processing device and processing method of a ring eccentric stop part, based on example 1, the only difference is that the part blank is heated to 802℃ in heat treatment, and the holding time is 80 minutes. The tempering temperature after quenching is 360℃, and the holding time is 2 hours.

[0033] As shown in the base plate 1, for accurate positioning, fastening parts, alignment. Mainly reflected in: in Figure 3 、 Figure 5 、 Figure 6 The center line of 2-ΦCH7 and the center of ΦD are coplanar on the base plate 1, and the distance from the center of ΦM to the center line of 2-ΦCH7 is L±0.01mm.

[0034] Through Figure 3 The cylindrical pin 3 is used to accurately position the ring eccentric stop part 2 on the base plate 1, and is fastened by the fastening screw 4 to realize Figure 3 ΦM is concentric with Figure 1 ΦD1 and ΦD2 on the ring eccentric stop part 2.

[0035] When processing, align Figure 5 、 Figure 6 ΦM on the base plate 1, and process Figure 1 ΦD1 and ΦD2 at the same time, to ensure the dimensional accuracy and coaxial tolerance requirements of the part size accuracy and shape tolerance◎0.03, indirectly ensure the eccentric distance L±0.02mm between the centers of ΦD1 and ΦD2 and the center of ΦD.

Claims

1. A processing device for annular eccentric stop parts, characterized in that: Includes a base plate (1), a pin (3) is provided in the middle of the base plate (1), and an annular eccentric stop part (2) is provided on the base plate (1). The annular eccentric stop part is connected and fastened to the base plate (1) by screws (4).

2. The processing device for an annular eccentric stop part as described in claim 1, characterized in that: The base plate (1) is provided with an installation groove (11), and the cross-section of the installation groove (11) is circular.

3. The processing device for annular eccentric stop parts as described in claim 1, characterized in that: The pin (3) is cylindrical and has a machining hole (31) on it.

4. The processing device for an annular eccentric stop part as described in claim 1, characterized in that: The annular eccentric stop part (2) is provided with a first groove (21), and a through hole (22) is provided in the first groove (21).

5. The processing device for an annular eccentric stop part as described in claim 4, characterized in that: The first groove (21) and through hole (22) are not coaxially arranged with the body of the annular eccentric stop part (2).

6. A processing method for a processing apparatus for annular eccentric stop parts as described in claims 1-5, characterized in that, Includes the following steps: A1: Use a lathe and milling machine to rough machine the raw material of the annular eccentric stop part to obtain the part blank; A2: Heat treat the part blank; A3: Use a lathe to perform semi-finishing on the part blank; A5: Use a lathe, boring machine and machining equipment to finish the part blank to obtain an annular eccentric stop part.

7. The processing method of the annular eccentric stop part processing device as described in claim 6, characterized in that: In step A1, rough machining includes turning the upper end face (201) and lower end face (202) of the part blank, and milling to obtain the through hole (22).

8. The processing method of the annular eccentric stop part processing device as described in claim 6, characterized in that, In step A2, the heat treatment includes the steps of quenching and tempering in sequence: heating the part blank to 802-860℃, holding it at that temperature for 80-100 minutes, and then tempering it at 360-420℃ for 2-4 hours.

9. The processing method of the annular eccentric stop part processing device as described in claim 6, characterized in that: In step A3, the semi-finishing process includes machining the upper end face (201), lower end face (202), and the corresponding stop of the first groove (21) of the part blank.

10. The processing method of the annular eccentric stop part processing device as described in claim 6, characterized in that: In step A4, the first groove (21) of the machined part blank corresponds to the stop, so that its flatness is 0.01mm, and the through hole (22) is machined through the machining hole (31).

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