Device and method for simultaneously machining inner mounting edge and outer mounting edge of bearing seat part

Abstract

The invention discloses a device and method for simultaneously machining inner and outer mounting edges of a bearing seat part, and belongs to the technical field of inner and outer mounting edges of bearing seat parts. The device comprises a base and a positioning assembly. The positioning assembly comprises a positioning ring, a stud, a nut assembly and a pressing ring. The positioning ring is arranged on the base and used for conducting radial and axial positioning on a to-be-machined bearing seat part. One end of the stud is detachably mounted on the base, and the stud is used for penetrating through a preset hole in a to-be-machined bearing seat part; the stud is sleeved with the pressing ring, and the pressing ring is used for pressing the bearing seat part to be machined through the inner side of the pressing ring; the nut assembly is used for pressing the pressing ring on the bearing seat part to be machined. The device further comprises a plurality of auxiliary supporting screws arranged on the base, and the auxiliary supporting screws are used for providing auxiliary supporting and adjusting the pressing state. Inner and outer mounting edges of a bearing seat part can be clamped and machined at a time, pressure change is avoided, quality and efficiency are improved, positioning and pressing reliability is good, and applicability is achieved.

Description

Technical Field

[0001] This invention belongs to the field of machining technology for the inner and outer mounting edges of bearing housing parts, and specifically relates to a device and method for simultaneously machining the inner and outer mounting edges of bearing housing parts. Background Technology

[0002] As a crucial component of aero-engines, bearing housings are typically precision thin-walled ring parts with inner and outer mounting edges. These parts require machining of the end faces and inner and outer circles of the mounting edges, with stringent requirements for parallelism of the end faces and runout of the inner and outer circles.

[0003] The common machining method for bearing housing parts is to first clamp the inner mounting edge and machine the outer mounting edge, then change the clamping pressure on the outer mounting edge and machine the inner mounting edge. While this method can achieve the required dimensions for both the inner and outer mounting edges, the change in clamping state before and after the pressure change causes the form and position tolerances between the inner and outer mounting edges to fail to meet the drawing requirements after machining. Therefore, in summary, the current machining method for the inner and outer mounting edges of bearing housing parts cannot achieve machining of both sides in a single setup, resulting in low machining efficiency; furthermore, the pressure change causes deformation of the bearing housing part, and the form and position tolerances between the inner and outer mounting edges after machining cannot meet the product quality requirements. Summary of the Invention

[0004] This invention provides an apparatus and method for simultaneously machining the inner and outer mounting edges of bearing housing parts. The purpose is to solve the problems of current machining methods for the inner and outer mounting edges of bearing housing parts, which cannot achieve machining of the inner and outer mounting edges of bearing housing parts in a single clamping operation, resulting in low machining efficiency; and the deformation of bearing housing parts caused by pressure changes, which makes the form and position tolerances between the inner and outer mounting edges after machining unable to meet the quality requirements of the product.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a device for simultaneously processing the inner and outer mounting edges of a bearing housing part, comprising a device body, a base, and a positioning component disposed on the base. The base has a mounting cavity for the bearing housing part to be processed, and the positioning component cooperates with the base to mount the bearing housing part to be processed onto the device body; wherein: The positioning assembly includes a positioning ring, a stud, a nut assembly, and a pressure ring. The positioning ring is mounted on the base and is used for radial and axial positioning of the bearing housing part to be processed. One end of the stud is detachably mounted on the base and is used to pass through a pre-drilled hole in the bearing housing part to be processed. The pressure ring is sleeved on the stud and is used to press the bearing housing part to be processed through its inner side. The nut assembly is used to press the pressure ring onto the bearing housing part to be processed. It also includes several auxiliary support screws set on the base, which are used to provide auxiliary support and adjust the clamping state.

[0006] In some implementations, the clamping portion inside the pressure ring corresponds to the support position of the auxiliary support screw.

[0007] In some embodiments, the nut assembly includes a first nut and a shoulder nut, the first nut being used for pre-tightening and the shoulder nut being used for clamping the pressure ring.

[0008] In some implementations, the auxiliary support screw is height-adjustable and is used to support the inner mounting edge of the bearing housing part to be processed.

[0009] In some implementations, the number of studs is set to six, with the six studs evenly distributed on the base.

[0010] The present invention also provides a method for simultaneously machining the inner and outer mounting edges of a bearing housing part. The method is based on the aforementioned apparatus for simultaneously machining the inner and outer mounting edges of a bearing housing part, and includes the following steps: S1. Install the device that enables simultaneous machining of the inner and outer mounting edges of the bearing housing part onto the lathe worktable, and correct the circular runout and end face runout of the positioning ring to the set tolerance range. S2. Install one end of the stud onto the base, so that the bearing housing part to be processed passes through the stud and the outer circle and end face of the bearing housing part to be processed contact and position with the base and the positioning ring. S3. Install a nut assembly and a pressure ring at the other end of the stud. The nut assembly presses the pressure ring onto the bearing housing part to be processed. The inner side of the pressure ring is pressed against the bearing housing part to be processed by the nut assembly. S4. Check the fitting gap between the inner mounting edge of the bearing housing part to be processed and the base, adjust the height of the auxiliary support screw and the clamping force of the nut assembly to ensure that the end face runout of the positioning ring meets the requirements; process the dimensions and geometric tolerances of the inner and outer mounting edges of the bearing housing part to be processed. S5. After machining is completed, loosen the locating ring and remove the machined bearing housing part to be machined to complete the machining.

[0011] In some implementations, in S1, the tolerance ranges for the circular runout and end face runout of the positioning ring include: the circular runout of the positioning ring is not greater than 0.01 mm, and the end face runout is not greater than 0.005 mm.

[0012] In some implementations, during S3, when installing the nut assembly and the pressure ring, the nut assembly is installed first for pre-tightening, then the pressure ring is installed, and finally, the final tightening is performed.

[0013] In some implementations, in S4, a feeler gauge is used to check the fitting gap and control the fitting gap to be no greater than 0.02 mm, and a dial indicator is used to check the runout value of the end face of the positioning ring and control the runout value of the end face of the positioning ring to be no greater than 0.01 mm.

[0014] In some implementations, in S4, the machining includes machining the end faces and inner and outer circles of the inner and outer mounting edges of the bearing housing part to be machined, completing all dimensional and geometric tolerance machining in one clamping.

[0015] Compared with the prior art, the device and method of the present invention for simultaneously machining the inner and outer mounting edges of a bearing housing part have the following advantages: This invention discloses a device for simultaneously machining the inner and outer mounting edges of bearing housing parts, improving the technical problems of part deformation and out-of-tolerance dimensional and positional tolerances caused by secondary clamping and pressure changes. The device uses a stud passing through a pre-drilled hole in the bearing housing part to be machined, and a pressure ring to clamp the part from its inner side. By employing axial clamping from the center, the inner and outer mounting edges of the bearing housing part are in a free and stable suspended machining area during clamping. The cutting tool can easily turn both sides without changing the clamping state of the part, eliminating deformation caused by changes in reference and stress redistribution due to pressure changes. This ensures the most critical dimensional and positional tolerances of the bearing housing part, such as end face parallelism and inner and outer circular runout. This invention enables machining of the inner and outer mounting edges of bearing housing parts in a single clamping operation, avoiding part deformation caused by pressure changes, improving product quality and processing efficiency. The device is convenient and practical, easy to operate, and has good reliability in positioning and clamping. It is easily applicable to similar parts processing and has certain applicability. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the invention and constitute a part of this invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0017] Figure 1 This is a schematic diagram of the structure of a device for simultaneously machining the inner and outer mounting edges of a bearing housing part according to the present invention.

[0018] The attached diagram shows the following reference numerals: 1. Base; 2. Positioning ring; 3. First nut; 4. Stud; 5. Shoulder nut; 6. Pressure ring; 7. Auxiliary support screw; 8. Bearing housing part. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] It should be noted that the apparatus and methods disclosed in the embodiments herein can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments herein. In this regard, each block in a flowchart or block diagram may represent a module, program, or part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system to perform the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0023] In addition, the functional modules in the various embodiments of this article can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0024] like Figure 1As shown, this invention provides a device for simultaneously machining the inner and outer mounting edges of a bearing housing part. The device includes a main body, a base 1, and a positioning component disposed on the base. The base 1 has a mounting cavity for the bearing housing part to be machined, and the positioning component cooperates with the base to mount the bearing housing part to be machined onto the main body. Wherein: The positioning assembly includes a positioning ring 2, a stud 4, a nut assembly, and a pressure ring 6. The positioning ring 2 is mounted on the base 1 and is used for radial and axial positioning of the bearing housing part to be processed. One end of the stud 4 is detachably mounted on the base 1 and is used to pass through a pre-drilled hole in the bearing housing part to be processed. The pressure ring 6 is sleeved on the stud 4 and is used to press the bearing housing part to be processed through its inner side. The nut assembly is used to press the pressure ring 6 onto the bearing housing part to be processed. It also includes several auxiliary support screws 7 set on the base 1, which are used to provide auxiliary support and adjust the clamping state.

[0025] The purpose of this invention is to avoid pressure changes, thereby enabling simultaneous machining of the inner and outer mounting edges of the bearing housing part. The device utilizes pre-set holes on the inclined surface of the part to design a clamping mechanism. The device is equipped with six studs 4. When installing the bearing housing part 8, one end of the stud 4 is passed through the pre-set hole on the part and installed onto the base 1 of the device. The other end of the stud 4 is connected to a clamping device that clamps the end face of the bearing housing part 8 from the inside. The clamping device is a pressure ring 6. The clamping part of the pressure ring 6 corresponds to the auxiliary support position to prevent emptying. At the same time, sufficient space is left on the inner side of the pressure ring 6 to avoid interference with the cutting tool and equipment during machining. This invention changes the original method of changing the pressure between the inner and outer pressure plates to using studs 4 and pressure ring 6 to clamp the part from the middle position, realizing the machining of all dimensions and geometric tolerances of the inner and outer mounting edges in one clamping operation.

[0026] Before clamping, this invention can provide preliminary support and leveling for the inner mounting edge of the bearing seat part 8, providing a more stable foundation for subsequent clamping. During the clamping process, through cooperation with the pressure ring 6, a stable force system of upward pressure and downward pull is formed, which firmly fixes the part on the base 1 and the positioning ring 2, preventing the clamping force from causing bending deformation in the middle of the part. During the processing, it effectively counteracts the vibration and deformation caused by the turning force, improves the rigidity and stability of the processing process, and further improves the processing accuracy and surface quality.

[0027] Preferably, in the device for simultaneously machining the inner and outer mounting edges of the bearing housing part according to the present invention, the clamping part on the inner side of the clamping ring 6 corresponds to the support position of the auxiliary support screw 7, achieving precise alignment of the clamping force and the support force, forming an ideal force flow path. Directly below the point where the clamping force is applied by the clamping ring 6, the auxiliary support screw 7 provides an adjustable support reaction force, allowing the clamping force to be transmitted vertically and directly to the base 1 through the support screw, avoiding bending stress on the part. The part is clamped between the clamping ring 6 and the supporting stud 4, enhancing the overall rigidity and stability, ensuring that the part will not deform due to uneven force during the clamping process, and ensuring that the cutting force of the subsequent tool will not cause the part to vibrate or shift.

[0028] Furthermore, this invention provides a device for simultaneously machining the inner and outer mounting edges of bearing housing parts. The nut assembly includes a first nut 3 and a shoulder nut 5. The first nut 3 is used for pre-tightening, and the shoulder nut 5 is used to tighten the pressure ring 6. Through the split and functional nut assembly, the controllability of the tightening process is achieved. In the first step, the first nut 3 is used for pre-tightening, which initially brings the pressure ring 6 into contact with the end face of the part and initially tightens the stud 4. The operator can easily adjust the position of the pressure ring 6, check whether the part is placed stably, and use a feeler gauge to check the contact gap. After confirming everything is correct, the second step uses the shoulder nut 5 for final, greater torque tightening. The shoulder of the shoulder nut 5 provides a large and flat bearing surface, ensuring that the tightening force is evenly transmitted to the pressure ring 6. This prevents part misalignment and uneven pressure rings that may occur with one-step tightening, allowing the huge final tightening force to be applied precisely along the axial direction, ensuring the repeatability and reliability of the tightening state.

[0029] Furthermore, the auxiliary support screws 7 of this invention are height-adjustable to support the inner mounting edge of the bearing housing part to be processed. Each auxiliary support screw 7 can be independently fine-tuned. Due to certain manufacturing errors in the bearing housing part 8, the positioning ring 2, and the base 1, completely rigid contact may lead to uneven stress on the parts. The adjustable auxiliary support screws 7 allow the operator to adjust the height of the support points one by one according to the specific condition of each bearing housing part 8 until the contact gap between the inner mounting edge of the bearing housing part 8 and the base 1 is no greater than 0.02mm, uniform and meeting the requirements. This compensates for manufacturing errors and ensures that the bearing housing part 8 is in an ideal horizontal and stable state before clamping, laying a perfect foundation for subsequent high-precision clamping and processing. This achieves an ultra-high precision geometric tolerance of 0.005mm end face runout.

[0030] Furthermore, the present invention provides six studs 4, which are evenly distributed on the base 1. This achieves both force distribution and structural stability. The even distribution of the six studs 4 around the circumference decomposes the force, preventing part distortion or eccentric deformation that could result from asymmetrical force distribution. For circular, thin-walled parts, this ensures critical shape tolerances such as roundness and concentricity. Simultaneously, the six points also constitute a stable positioning system without over-positioning risk, avoiding assembly interference or stress concentration problems that could arise from too many clamping points.

[0031] The present invention also provides a method for simultaneously machining the inner and outer mounting edges of a bearing housing part. The method is based on the aforementioned apparatus for simultaneously machining the inner and outer mounting edges of a bearing housing part, and includes the following steps: S1. Install the device that enables simultaneous machining of the inner and outer mounting edges of the bearing housing part onto the lathe worktable, and correct the circular runout and end face runout of the positioning ring 2 to the set tolerance range. S2. Install one end of the stud 4 onto the base 1, so that the bearing housing part to be processed passes through the stud 4, and so that the outer circle and end face of the bearing housing part to be processed contact and position with the base 1 and the positioning ring 2. S3. Install a nut assembly and a pressure ring 6 at the other end of the stud 4. The nut assembly presses the pressure ring 6 onto the bearing housing part to be processed. The inner side of the pressure ring 6 is pressed against the bearing housing part to be processed by the nut assembly. S4. Check the fitting gap between the inner mounting edge of the bearing housing part to be processed and the base 1, adjust the height of the auxiliary support screw 7 and the clamping force of the nut assembly, so that the end face runout of the positioning ring 2 meets the requirements; process the dimensions and geometric tolerances of the inner and outer mounting edges of the bearing housing part to be processed. S5. After machining is completed, loosen the locating ring 2 and remove the machined bearing housing part to be machined, thus completing the machining process. The method of this invention can ensure that each clamping can relatively reproduce the exact same reference and clamping conditions; by checking the fitting gap and adjusting the height of the auxiliary support screw 7 and the clamping force of the nut assembly, the device can be dynamically adjusted, ensuring machining accuracy and consistency, eliminating pressure change errors, and ensuring geometric tolerances; at the same time, it reduces the dependence on the operator, has good repeatability and stability, and is suitable for application in aviation, aerospace and other fields.

[0032] In the method of the present invention, the specific tolerance range of the correction is further defined, the circular runout of the positioning ring 2 is not greater than 0.01 mm and the end face runout is not greater than 0.005 mm, which leaves sufficient tolerance space for the machining error of the bearing seat part 8.

[0033] Furthermore, in step S3, the method of the present invention first installs the nut assembly for pre-tightening, then installs the pressure ring 6, and finally performs final tightening. This ensures that the pressure ring 6 can be correctly and smoothly pressed onto the end face of the bearing housing part 8, which can initially fix the relative position of the stud 4 and the part, forming a stable foundation. Then, the pressure ring 6 is placed in, and the final tightening is performed. The pressure ring 6 is likely to be pressed smoothly against the bearing housing part 8, reducing random errors introduced during clamping and ensuring a high degree of repeatability in the tightening state.

[0034] More preferably, the method of the present invention controls the fitting gap to be no greater than 0.02 mm and the end face runout to be no greater than 0.01 mm. Precision measuring tools such as feeler gauges and dial indicators are used for measurement, making the adjustment process more accurate and reliable, and improving the controllability of the process and the predictability of the quality. Specifically, the machining involves machining the end faces and inner and outer circles of the inner and outer mounting edges of the bearing housing part 8, completing all dimensional and geometric tolerance machining in a single clamping operation. This leads to high-quality and stable production.

[0035] The following detailed description of the apparatus and method for simultaneously machining the inner and outer mounting edges of a bearing housing part, through specific embodiments, further illustrates the present invention.

[0036] The device of this invention mainly consists of a base 1, a positioning ring 2, a first nut 3, studs 4, a shoulder nut 5, a pressure ring 6, and auxiliary support screws 7. This invention eliminates the conventional inner and outer pressure plates and adds six studs 4 and a pressure ring 6 as a clamping mechanism. By utilizing the pre-set holes on the bearing seat part 8, the part is positioned and clamped from the center. The inner diameter of the pressure ring 6 is designed to leave sufficient space for the inner and outer mounting edges of the part during a single clamping process.

[0037] During processing: The device of this invention is installed on the lathe worktable. The runout of the locating ring 2 is aligned to be no more than 0.01 mm, and the runout of the locating end face is no more than 0.005 mm. Then, one end of the six studs 4 is installed on the base 1. The part is then passed through the studs 4 using the pre-drilled holes on the part. The outer circle and end face of the part are positioned on the base 1 and the locating ring 2. The first nut 3, the pressure ring 6, and the shoulder nut 5 are installed sequentially on the other end of the studs 4. The pressure ring 6 is then pressed against the end face of the part. A feeler gauge is used to check that the gap between the inner mounting edge of the part and the base 1 is no more than 0.02 mm. By adjusting the auxiliary support screw 7 and the clamping force, the runout of the end face of the part is checked with a dial indicator to be no more than 0.01 mm.

[0038] After the parts are clamped, the dimensions and geometric tolerances of the inner and outer mounting edges of the parts are processed in sequence. After processing, the pressure ring 6 is loosened and the parts are removed. The dimensions and geometric tolerances of the parts are then checked to complete the processing.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Anyone skilled in the art can readily implement the present invention according to the description and above. Any modifications, alterations, or equivalent variations made using the technical content disclosed above are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A device for simultaneously machining the inner and outer mounting edges of a bearing housing part, characterized in that, The device includes a main body, which comprises a base (1) and a positioning component disposed on the base (1). The base (1) has a mounting cavity for the bearing housing part to be processed. The positioning component is capable of cooperating with the base (1) to install the bearing housing part to be processed onto the device body; wherein: The positioning assembly includes a positioning ring (2), a stud (4), a nut assembly, and a pressure ring (6); the positioning ring (2) is disposed on the base (1) and is used for radial and axial positioning of the bearing seat part to be processed; one end of the stud (4) is detachably installed on the base (1) and is used to pass through a pre-set hole on the bearing seat part to be processed; the pressure ring (6) is sleeved on the stud (4) and is used to press the bearing seat part to be processed through its inner side; the nut assembly is used to press the pressure ring (6) onto the bearing seat part to be processed. It also includes a number of auxiliary support screws (7) disposed on the base (1), the number of auxiliary support screws (7) being used to provide auxiliary support and adjust the clamping state.

2. The device for simultaneously machining the inner and outer mounting edges of a bearing housing part according to claim 1, characterized in that, The pressing part inside the pressure ring (6) corresponds to the support position of the auxiliary support screw (7).

3. The device for simultaneously machining the inner and outer mounting edges of a bearing housing part according to claim 1, characterized in that, The nut assembly includes a first nut (3) and a shoulder nut (5), the first nut (3) being used for pre-tightening and the shoulder nut (5) being used for pressing the pressure ring (6).

4. The device for simultaneously machining the inner and outer mounting edges of a bearing housing part according to claim 1, characterized in that, The auxiliary support screw (7) is configured to be height adjustable and is used to support the inner mounting edge of the bearing housing part to be processed.

5. The device for simultaneously machining the inner and outer mounting edges of a bearing housing part according to claim 1, characterized in that, The number of studs (4) is set to six, and the six studs (4) are evenly distributed on the base (1).

6. A method for simultaneously machining the inner and outer mounting edges of a bearing housing part, characterized in that, The method is based on the apparatus according to any one of claims 1-5 for simultaneously machining the inner and outer mounting edges of the bearing housing part, and the method includes the following steps: S1. Install the device that enables simultaneous machining of the inner and outer mounting edges of the bearing housing parts onto the lathe worktable and correct the circular runout and end face runout of the positioning ring (2) to the set tolerance range. S2. Install one end of the stud (4) onto the base (1) so that the bearing housing part to be processed passes through the stud (4) and the outer circle and end face of the bearing housing part to be processed contact and position with the base (1) and the positioning ring (2); S3. Install a nut assembly and a pressure ring (6) at the other end of the stud (4). The nut assembly presses the pressure ring (6) onto the bearing housing part to be processed. The inner side of the pressure ring (6) is pressed against the bearing housing part to be processed by the nut assembly. S4. Check the fitting gap between the inner mounting edge of the bearing housing part to be processed and the base (1), adjust the height of the auxiliary support screw (7) and the clamping force of the nut assembly so that the end face runout of the positioning ring (2) meets the requirements; process the dimensions and geometric tolerances of the inner mounting edge and outer mounting edge of the bearing housing part to be processed. S5. After processing is completed, loosen the positioning ring (2) and remove the processed bearing seat part to be processed to complete the processing.

7. The method for simultaneously machining the inner and outer mounting edges of a bearing housing part according to claim 6, characterized in that, In S1, the tolerance range of the circular runout and end face runout of the positioning ring (2) includes: the circular runout of the positioning ring (2) is not greater than 0.01 mm and the end face runout is not greater than 0.005 mm.

8. The method for simultaneously machining the inner and outer mounting edges of a bearing housing part according to claim 6, characterized in that, In S3, when installing the nut assembly and the pressure ring (6), the nut assembly is installed first for pre-tightening, then the pressure ring (6) is installed, and finally the final tightening is performed.

9. The method for simultaneously machining the inner and outer mounting edges of a bearing housing part according to claim 6, characterized in that, In S4, the feeler gauge is used to check the fit gap and control the fit gap to be no greater than 0.02mm. The dial indicator is used to check the runout value of the end face of the positioning ring (2) and control the runout value of the end face of the positioning ring (2) to be no greater than 0.01mm.

10. The method for simultaneously machining the inner and outer mounting edges of a bearing housing part according to claim 6, characterized in that, In S4, machining includes machining the end faces and inner and outer circles of the inner and outer mounting edges of the bearing housing part to be machined, completing all dimensional and geometric tolerance machining in one clamping.

Images