Turning tool and method for bearing saddle

Abstract

The invention discloses a bearing saddle turning tool and method, the bearing saddle turning tool is used for turning a finish machining arc surface of a saddle casting blank, the bearing saddle turning tool comprises a frame main body, the frame main body comprises a mounting ring disc and an outer ring disc which are coaxially arranged, and two parallel flat clamping plates are fixedly connected between the mounting ring disc and the outer ring disc; the two flat clamping plates are perpendicular to the mounting ring disc and are symmetrically arranged about the axis of the mounting ring disc, and the inner side walls of the flat clamping plates make contact with the top face of the saddle casting blank; the front-back positioning assembly is used for positioning the two saddle casting blanks which are arranged in the frame main body in a face-to-face central symmetry mode, and the saddle casting blanks can be prevented from moving front and back in the turning process; and the left-right positioning assembly is used for positioning the two saddle casting blanks which are arranged in the frame body in a face-to-face central symmetry mode, and the saddle casting blanks can be prevented from moving left and right in the turning process. Two saddle casting blanks can be installed on the lathe chuck at a time for face-to-face inner hole face machining, and the machining efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of casting processing, and in particular to a load-bearing saddle turning tool and method. Background Art

[0002] The load-bearing saddle is a key component of the railway freight car bogie and plays a vital role in driving safety. The load-bearing saddle is generally manufactured by machining after casting, such as Figure 1 As shown, the saddle casting blank 1' of the bearing saddle, the finely machined arc surface 101' of the saddle casting blank 1' is in contact with the bearing below, and its assembly size is relatively critical, which directly affects the assembly quality between the bearing saddle and the bearing. In the existing processing process, it is often fixed on the tooling chuck of the lathe by simple clamps such as pads and pressure plates for turning, which is prone to loosening and falling off, affecting the processing accuracy and processing quality. Or after the single piece is clamped, it is processed by boring the hole using a boring machine, which has low processing efficiency.

[0003] In order to overcome the above problems, a load-bearing saddle turning tool and method are needed. Summary of the invention

[0004] The purpose of the present invention is to provide a bearing saddle turning tool and method, which can install two saddle castings on a lathe chuck at one time to carry out face-to-face processing of inner hole surfaces, thereby improving processing efficiency and quality.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention discloses a load-bearing saddle turning tool, which is used for turning the finely machined arc surface of the saddle casting blank, and comprises: The frame body comprises a coaxially arranged mounting ring disk and an outer ring disk, wherein two parallel flat clamping plates are fixedly connected between the mounting ring disk and the outer ring disk, wherein the flat clamping plates are perpendicular to the mounting ring disk, and the two flat clamping plates are symmetrically arranged about the axis of the mounting ring disk, and the inner side walls of the flat clamping plates contact the top surface of the saddle casting blank; A front and rear positioning assembly, used for positioning two saddle casting blanks which are arranged face to face and centrally symmetrically in the frame body, and capable of preventing the saddle casting blanks from moving forward and backward during turning; The left and right positioning components are used to position the two saddle casting blanks which are arranged face to face and centrally symmetrically in the frame body, and can prevent the saddle casting blanks from moving left and right during turning.

[0006] Further, the front and rear positioning components include an inner limiting structure and an outer pressing set screw. The inner limiting structure is arranged on the inner side wall of the mounting ring plate and can contact and limit the front side wall of the saddle billet; a plurality of the outer pressing set screws are threadedly connected to the outer ring plate, and the inner ends of the outer pressing set screws abut against the rear side wall of the saddle billet.

[0007] Further, the inner limiting structure includes a plurality of inner limiting set screws. The inner limiting set screws are threadedly connected to the mounting ring plate, and the inner ends of the inner limiting set screws contact and limit the front side wall.

[0008] Further, a lock nut is threadedly connected to the inner limiting set screw, and the lock nut is locked on the inner side wall of the mounting ring plate.

[0009] Further, the number of the left and right positioning components is two groups. The two groups of left and right positioning components are symmetrically arranged about the axis of the mounting ring plate and respectively perform left and right positioning on the two saddle billets; the left and right positioning components include an inner baffle and a right-angle pressing plate. The inner baffle is perpendicular to the flat clamping plate and is respectively fixedly connected to the inner side walls of the mounting ring plate and the outer ring plate at both ends. The inner baffle limits the edge end face of the saddle billet; guide slots are centrally opened at both ends of the flat clamping plate, and the right-angle pressing plate is installed on the opposite side of the inner baffle through a clamping bolt and presses and positions the other end face of the saddle billet.

[0010] Further, a cushion bar head is arranged at the top end of the right-angle pressing plate, and the cushion bar head is clamped between the bottom surfaces of the two saddle billets.

[0011] Further, a limiting shallow groove is arranged at the installation position of the flat clamping plate on the mounting ring plate and the outer ring plate, and each connection position is connected together through a plurality of locking screws.

[0012] Further, a mounting slot opening is arranged on the periphery of the mounting ring plate. The four mounting slot openings are circumferentially distributed on the outer edge of the mounting ring plate; the mounting ring plate is coaxially and fixedly connected to the adapter plate on the lathe through the mounting slot opening.

[0013] Further, detection slot openings are arranged at the edge of the middle hole of the outer ring plate. The two detection slot openings are symmetrically arranged at the edge position of the middle hole of the outer ring plate.

[0014] The present invention also discloses a method for turning a bearing saddle. Using the bearing saddle turning tooling described in any one of the above, turning processing is performed on the finish-machined arc surface of the saddle billet, including the following steps: Step 1, preparation. Coaxially install the bearing saddle turning tooling on the spindle chuck of the lathe. The spindle chuck clamps the adapter plate, and the adapter plate is connected to the mounting ring plate. Step 2: Clamp the workpiece. Insert the two saddle billets that have completed the rough machining of the top and bottom surfaces into the frame body in sequence, with the two facing each other and coaxially arranged; adjust the front-back positioning assembly and the left-right positioning assembly to clamp and position the two saddle billets. Step 3: Turning. Start the lathe and use a turning tool to synchronously machine the finish-machined arc surfaces of the two saddle billets.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are as follows: The turning tooling for the load-bearing saddle of the present invention fully encloses and clamps the two saddle billets that are symmetrically arranged face to face and centered through the inner cavity space formed by the mounting ring plate, the outer ring plate, and the flat clamping plate, which can ensure the installation strength of the saddle billets and prevent the saddle billets from falling off; fine-tune the turning and clamping positions of the saddle billets through the front-back positioning assembly and the left-right positioning assembly to ensure that the two saddle billets are coaxial and aligned front and back, ensuring the machining accuracy of synchronous turning.

[0016] In addition, the front side wall of the saddle billet is limited by four inner limit set screws. Rotating the inner limit set screws can achieve a micro-adjustment of the limit position, which is convenient for flexible adjustment of the limit position and can be applied to the positioning of saddle billets with different width specifications. And by using a lock nut to tightly back the inner limit set screw against the inner side wall of the mounting ring plate, it can prevent the problem of inaccurate limitation caused by the loosening of the inner limit set screw. The left and right directions of the saddle billet are positioned and clamped by the inner baffle and the right-angle pressing plate to form a centrally symmetric feeding port, which is convenient for quick locking; by adding side set screws at both ends of the inner baffle, the inner ends of the side set screws limit the end face of the flange, and it can realize the post-processing of saddle billets with different length specifications after limitation. By setting a cushion strip head at the top of the right-angle pressing plate, during the installation of the right-angle pressing plate, not only the left and right directions of the saddle billet are pressed and positioned, but at the same time, the cushion strip head is inserted between the bottom surfaces of the saddle billets to assist in completing the up and down direction limitation. By opening a limit shallow groove on the inner side walls of the mounting ring plate and the outer ring plate for fitting with the flat clamping plate, it is convenient for quick assembly during the initial debugging of the tooling. By adding a mounting slot, it is convenient to install the tooling of the present invention on the lathe spindle and is also convenient for disassembly and replacement. By symmetrically arranging two detection slots at the edge of the middle hole of the outer ring plate, it is convenient for the inner diameter caliper to give way when measuring the size of the finish-machined arc surface, enabling the turning worker to control the machining size.

[0017] The turning method for the load-bearing saddle of the present invention can install two saddle billets at the same time, and the turning tool can synchronously machine the two saddle billets. Brief Description of the Drawings

[0018] The present invention will be further described below with reference to the drawings.

[0019] Figure 1 Schematic diagram of the three-dimensional structure of the saddle casting blank Figure 2 Schematic diagram of the three-dimensional structure of the turning tooling for the load-bearing saddle of the present invention Figure 3 Schematic diagram of the front view sectional structure of the turning tooling for the load-bearing saddle of the present invention Figure 4 Schematic diagram of the right view structure of the turning tooling for the load-bearing saddle of the present invention Figure 5 Schematic diagram of the three-dimensional structure of the turning tooling for the load-bearing saddle of the present invention in the state of the separated right-angle pressing plate Figure 6 Schematic diagram of the front view sectional structure of the turning tooling for the load-bearing saddle of the present invention after installing the saddle casting blank

[0020] Explanation of reference numerals: 1', saddle casting blank; 101', precision-machined arc surface; 102', top surface; 103', bottom surface; 104', front side wall; 105', rib end face 1, mounting ring plate; 101, mounting card slot; 2, outer ring plate; 201, detection slot; 3, flat clamping plate; 301, guiding slot; 4, inner baffle; 5, right-angle pressing plate; 501, cushion bar head; 6, locking screw; 7, inner limiting set screw; 8, outer pressing set screw; 9, side set screw; 10, mounting bolt Detailed implementation manners

[0021] The core of the present invention is to provide a turning tooling and method for a load-bearing saddle, which can install two saddle casting blanks on the lathe chuck at one time for facing machining of the inner hole surface, improving the machining efficiency and quality

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention

[0024] Referring to the accompanying drawings Figure 1 Schematic diagram of the three-dimensional structure of the saddle casting blank Figure 2Schematic three-dimensional structure diagram of the turning tooling for the saddle of the present invention; Figure 3 Schematic front sectional view structure diagram of the turning tooling for the saddle of the present invention; Figure 4 Schematic right view structure diagram of the turning tooling for the saddle of the present invention; Figure 5 Schematic three-dimensional structure diagram of the turning tooling for the saddle of the present invention in the state of the separated right-angle pressing plate; Figure 6 Schematic front sectional view structure diagram of the turning tooling for the saddle of the present invention after installing the saddle casting blank.

[0025] In a specific embodiment, as Figures 1 to 6 shown, the turning tooling for the saddle of the present invention is used for turning and machining the finish-machined arc surface 101' of the saddle casting blank 1'. The specific structure of the turning tooling for the saddle of the present invention includes: A frame main body, including an installation ring plate 1 and an outer ring plate 2 arranged coaxially. Both the installation ring plate 1 and the outer ring plate 2 are in the shape of a circular ring plate. Two parallel flat clamping plates 3 are fixedly connected between the installation ring plate 1 and the outer ring plate 2. The flat clamping plates 3 are perpendicular to the installation ring plate 1, and the two flat clamping plates 3 are symmetrically arranged about the axis of the installation ring plate 1. The inner side wall of the flat clamping plate 3 contacts the top surface 102' of the saddle casting blank 1', that is, the inner side wall of the flat clamping plate 3 limits the top surface 102'. Two saddle casting blanks 1' symmetrically arranged face to face can be accommodated in the inner cavity of the frame main body.

[0026] For some specifications of the saddle, the finish-machined arc surface 101' of its finished product itself is close to a semi-circular shape. On the premise of leaving machining allowance, it can ensure an arc groove of 180 degrees during turning. That is to say, the height of the two saddle casting blanks 1' is exactly adapted to the distance between the two flat clamping plates 3.

[0027] A front and rear positioning component, used to position two saddle casting blanks 1' symmetrically arranged face to face in the frame main body, and can prevent the saddle casting blanks 1' from moving forward and backward during the turning process. The front and rear directions are defined as the direction of the lathe spindle, and the inner end is defined as the front end.

[0028] A left and right positioning component, used to position two saddle casting blanks 1' symmetrically arranged face to face in the frame main body, and can prevent the saddle casting blanks 1' from moving left and right during the turning process. The left and right directions are defined as the horizontal direction perpendicular to the lathe spindle.

[0029] The inner cavity space enclosed by the installation ring plate 1, the outer ring plate 2 and the flat clamping plates 3 is used to fully enclose and clamp two saddle casting blanks 1' symmetrically arranged face to face, which can ensure the installation strength of the saddle casting blanks 1' and avoid the saddle casting blanks 1' from falling off; the front and rear positioning component and the left and right positioning component are used to finely adjust the turning and clamping positions of the saddle casting blanks 1', ensure that the two saddle casting blanks 1' are coaxial and aligned front and back, and ensure the machining accuracy of synchronous turning.

[0030] In a specific embodiment of the present invention, as Figures 1 to 5 shown, the front and rear positioning components include an inner limiting structure and outer pressing set screws 8. The inner limiting structure is arranged on the inner side wall of the mounting ring plate 1 and can contact the front side wall 104' of the saddle blank 1'. A plurality of outer pressing set screws 8 are threadedly connected to the outer ring plate 2, and the inner ends of the outer pressing set screws 8 abut against the rear side wall of the saddle blank 1'. In a specific embodiment, the number of the outer pressing set screws 8 is four, with two as a group, and one group of outer pressing set screws 8 presses against the rear side wall of one saddle blank 1'.

[0031] Specifically, as Figure 4 shown, the inner limiting structure includes a plurality of inner limiting set screws 7. The inner limiting set screws 7 are threadedly connected to the mounting ring plate 1, and the inner ends of the inner limiting set screws 7 contact the front side wall 104'. In a specific embodiment, the number of the inner limiting set screws 7 is four, with two as a group, and one group of inner limiting set screws 7 presses against the front side wall of one saddle blank 1'.

[0032] Obviously, the inner limiting structure can also be limited by means of a limiting column, that is, the front end of the limiting column is fixed on the inner side wall of the mounting ring plate 1, and the rear end of the limiting column abuts against the front side wall of the saddle blank 1'. Only different limiting columns need to be replaced for saddle blanks 1' of different width specifications. Similar simple replacement methods all fall within the protection scope of the present invention.

[0033] Specifically, as Figure 4 shown, a lock nut is threadedly connected to the inner limiting set screw 7, and the lock nut is locked on the inner side wall of the mounting ring plate 1.

[0034] The front side wall of the saddle blank 1' is limited by four inner limiting set screws 7. By rotating the inner limiting set screws 7, a fine adjustment of the limiting position can be achieved, which is convenient for flexible adjustment of the limiting position and can be applicable to the positioning of saddle blanks 1' of different width specifications. Moreover, by using a lock nut to back-tighten the inner limiting set screw 7 on the inner side wall of the mounting ring plate 1, the problem of inaccurate limiting caused by the loosening of the inner limiting set screw 7 can be prevented.

[0035] In a specific embodiment of the present invention, as Figures 2 to 6 shown, the number of the left and right positioning components is two groups. The two groups of left and right positioning components are symmetrically arranged about the axis center line of the mounting ring plate 1 and respectively perform left and right positioning on two saddle blanks 1'.

[0036] Specifically, as Figures 2 to 6As shown, the left and right positioning components include an inner baffle 4 and a right-angled pressing plate 5. The inner baffle 4 is perpendicular to the flat clamping plate 3 and its two ends are respectively fixedly connected to the inner side walls of the mounting ring plate 1 and the outer ring plate 2. The inner baffle 4 limits the edge end face 105' of the saddle billet 1'. The two ends of the inner baffle 4 can be directly welded to the inner side walls of the mounting ring plate 1 and the outer ring plate 2 or can be connected by screws. At the middle positions of the two ends of the flat clamping plate 3, guiding notches 301 are provided. The right-angled pressing plate 5 is installed on the opposite side of the inner baffle 4 through clamping bolts 10 to press and position the other end face of the saddle billet 1', and the clamping bolts 10 are fitted in the guiding notches 301. That is, the vertical plate of the right-angled pressing plate 5 presses against the end face in the length direction of the saddle billet 1'.

[0037] Specifically, as Figures 2 to 6 shown, at the two ends of the inner baffle 4, side set screws 9 are also connected through threaded holes, and the inner ends of the side set screws 9 abut against the edge end face 105'.

[0038] Actually, the distance from the bottom surface of the inner baffle 4 to the opposite flat clamping plate 3 is slightly greater than the height of the saddle billet 1', so that the opening below the inner baffle 4 is the feeding port. During the feeding and clamping process, it is mainly necessary to install the right-angled pressing plate 5 for pressing.

[0039] The left and right directions of the saddle billet 1' are positioned and pressed through the inner baffle 4 and the right-angled pressing plate 5 to form a centrally symmetric feeding port, which is convenient for quick locking; by adding side set screws 9 at the two ends of the inner baffle 4, the inner ends of the side set screws 9 limit the edge end face 105', and it is possible to limit and process saddle billets 1' of different length specifications.

[0040] In a specific embodiment of the present invention, as Figure 3 and Figure 6 shown, a cushion bar head 501 is provided at the top end of the right-angled pressing plate 5, and the cushion bar head 501 is clamped between the bottom surfaces 103' of the two saddle billets 1'.

[0041] For some specifications of saddle billets 1', their height is low, that is, the precision-machined arc surface 101' is not a semi-circular arc surface. At this time, if a large machining allowance is left to ensure that the two saddle billets 1' can be pieced together into a complete circle for machining, it will cause waste of raw materials and a large amount of machining. Therefore, a cushion bar head 501 is provided at the top end of the right-angled pressing plate 5 for heightening, that is, after the height of the two saddle billets 1' plus the cushion bar head 501, it just fits the distance between the two flat clamping plates 3.

[0042] Specifically, an inclined chamfer is added to the insertion end face of the cushion bar head 501.

[0043] By arranging a cushion bar head 501 at the top end of the right-angle pressing plate 5, during the installation process of the right-angle pressing plate 5, not only is the saddle-shaped billet 1' pressed and positioned in the left-right direction, but at the same time, the cushion bar head 501 is inserted between the bottom surfaces 103' of the saddle-shaped billet 1', assisting in completing the up-down direction limit.

[0044] In a specific embodiment of the present invention, as Figure 2 , Figure 4 and Figure 5 shown, the installation positions of the mounting ring plate 1 and the outer ring plate 2 on the flat clamping plate 3 are provided with limiting shallow grooves, and the long side surface of the flat clamping plate 3 is embedded in the limiting shallow grooves. Moreover, each connection position is respectively connected together by a plurality of locking screws 6. In a specific embodiment, the number of the locking screws 6 is three.

[0045] Specifically, in order to increase the connection strength between the flat clamping plate 3 and the ring plate, after confirming that the tooling can meet the clamping and processing requirements, the flat clamping plate 3 is directly welded on the side wall of the ring plate, making the tooling more stable and reliable.

[0046] By opening the limiting shallow grooves on the inner side walls of the mounting ring plate 1 and the outer ring plate 2 that are fitted with the flat clamping plate 3, it is convenient for quick assembly during the preliminary debugging of the tooling.

[0047] In a specific embodiment of the present invention, as Figure 2 , Figure 4 and Figure 5 shown, a mounting slot opening 101 is provided on the periphery of the mounting ring plate 1, and the four mounting slot openings 101 are evenly distributed on the outer edge of the mounting ring plate 1 in a circumferential manner. The mounting ring plate 1 is coaxially and fixedly connected to the adapter plate on the lathe through the mounting slot opening 101.

[0048] By adding the mounting slot opening 101, it is convenient to install the tooling of the present invention on the lathe spindle, and it is also convenient for disassembly and replacement.

[0049] In a specific embodiment of the present invention, as Figure 2 shown, a detection slot opening 201 is provided at the edge of the middle hole of the outer ring plate 2, and the two detection slot openings 201 are symmetrically arranged at the edge position of the middle hole of the outer ring plate 2 in a central symmetry manner.

[0050] By symmetrically arranging two detection slot openings 201 at the edge position of the middle hole of the outer ring plate 2, it is convenient for the inner diameter caliper to give way when measuring the size of the precision-machined arc surface 101', enabling the lathe operator to control the processing size.

[0051] In summary, for the turning tooling for the carrying saddle of the present invention, the inner cavity space formed by the mounting ring plate 1, the outer ring plate 2 and the flat clamping plate 3 fully encloses two saddle billets 1' which are symmetrically arranged face to face and centered, which can ensure the installation strength of the saddle billets 1' and prevent the saddle billets 1' from falling off; the turning and clamping positions of the saddle billets 1' are finely adjusted by the front and rear positioning components and the left and right positioning components to ensure that the two saddle billets 1' are coaxial and aligned front and back, ensuring the machining accuracy of synchronous turning. In addition, the front side wall of the saddle billet 1' is limited by four inner limiting set screws 7, and the fine adjustment of the limiting position can be realized by rotating the inner limiting set screws 7, which is convenient for flexibly adjusting the limiting position and can be applicable to the positioning of saddle billets 1' with different width specifications. Moreover, by using lock nuts to tightly back the inner limiting set screws 7 against the inner side wall of the mounting ring plate 1, the problem of inaccurate limiting caused by the loosening of the inner limiting set screws 7 can be prevented. The left and right directions of the saddle billet 1' are positioned and clamped by the inner baffle 4 and the right-angle pressing plate 5 to form a centrally symmetric feeding port, which is convenient for realizing quick locking; by adding side set screws 9 at both ends of the inner baffle 4, the inner ends of the side set screws 9 limit the edge end face 105', and the machining after limiting of saddle billets 1' with different length specifications can be realized. By setting cushion strip heads 501 at the top of the right-angle pressing plate 5, during the installation of the right-angle pressing plate 5, not only the left and right direction pressing and positioning of the saddle billet 1' are carried out, but at the same time, the cushion strip heads 501 are inserted between the bottom surfaces 103' of the saddle billet 1', assisting in completing the up and down direction limiting. By opening limiting shallow grooves on the inner side walls of the mounting ring plate 1 and the outer ring plate 2 for fitting with the flat clamping plate 3, it is convenient for quick assembly during the initial debugging of the tooling. By adding a mounting slot opening 101, it is convenient to install the tooling of the present invention on the lathe spindle and is also convenient for disassembly and replacement. By symmetrically arranging two detection slot openings 201 at the edge position of the middle hole of the outer ring plate 2, it is convenient for the inside diameter caliper to give way when measuring the size of the finish-machined arc surface 101', enabling the turning workers to control the machining size.

[0052] The present invention also discloses a method for turning the carrying saddle. Using the turning tooling for the carrying saddle of any one of the above embodiments, the finish-machined arc surface 101' of the saddle billet 1' is turned, including the following steps: Step 1, preparation, coaxially install the turning tooling for the carrying saddle on the spindle chuck of the lathe, the spindle chuck clamps the adapter plate, and the adapter plate is connected to the mounting slot opening 101 of the mounting ring plate 1 through four bolts.

[0053] Step 2: Clamp the workpiece. Insert the two saddle billets 1' into the frame body in sequence and set them coaxially face to face. When loading the saddle billets 1', load them one by one and push them in from different feeding ports at the left and right ends respectively, and then initially clamp them with the right-angle pressing plate 5. The top surface 102' of the saddle billet 1' slides on the inner side wall of the flat clamping plate 3. Clamp and position the two saddle billets 1' by adjusting the front-back positioning assembly and the left-right positioning assembly. In the adjustment process, first, use a wrench tool to pre-tighten the outer pressing jackscrew 8 one by one to initially lock the front-back positions of the two saddle billets 1'. Use a rubber hammer to strike the right-angle pressing plate 5. After the right-angle pressing plate 5 is pressed in the length direction of the saddle billet 1', tighten the clamping bolt 10 and finally tighten the outer pressing jackscrew 8.

[0054] Step 3: Turning. Start the lathe and synchronously machine the finish-machined arc surfaces 101' of the two saddle billets 1' with a turning tool.

[0055] Step 4: Unload the workpiece. After using an internal diameter caliper to measure that the size of the finish-machined arc surface 101' meets the design requirements, stop the machine. Loosen the outer pressing jackscrew 8, then loosen the clamping bolt 10 to remove the right-angle pressing plate 5, and take out the machined saddle billet 1'.

[0056] In a specific embodiment of the turning method of the bearing saddle of the present invention, for the saddle billet 1' with a lower height specification, a right-angle pressing plate 5 with a pad strip head 501 is required to complete the auxiliary limit in the up-down direction of the saddle billet 1'.

[0057] The turning method of the bearing saddle of the present invention can install two saddle billets 1' at the same time, and the turning tool can synchronously machine the two saddle billets 1' for turning.

[0058] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0059] The embodiments described above are only used to describe the preferred mode of the present invention, rather than to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A turning tooling for a carrying saddle, which is used for turning the finish-machined arc surface (101') of a saddle casting blank (1'), and is characterized in that, Comprising: A frame body, including a coaxially arranged mounting ring plate (1) and an outer ring plate (2), two parallel flat clamping plates (3) are fixedly connected between the mounting ring plate (1) and the outer ring plate (2), the flat clamping plates (3) are perpendicular to the mounting ring plate (1), the two flat clamping plates (3) are symmetrically arranged about the axis of the mounting ring plate (1), and the inner side walls of the flat clamping plates (3) contact the top surface (102') of the saddle billet (1'); A front and rear positioning component, used to position the two saddle billets (1') symmetrically arranged face to face and centered within the frame body, capable of preventing the saddle billets (1') from moving forward and backward during the turning process; A left and right positioning component, used to position the two saddle billets (1') symmetrically arranged face to face and centered within the frame body, capable of preventing the saddle billets (1') from moving left and right during the turning process.

2. The turning tooling for the bearing saddle according to claim 1, wherein: The front and rear positioning component includes an inner limiting structure and an outer pressing set screw (8), the inner limiting structure is arranged on the inner side wall of the mounting ring plate (1) and can contact and limit the front side wall (104') of the saddle billet (1'); a plurality of the outer pressing set screws (8) are threadedly connected to the outer ring plate (2), and the inner end heads of the outer pressing set screws (8) abut against the rear side wall of the saddle billet (1).

3. The turning tooling for bolster according to claim 2, wherein: The inner limiting structure includes a plurality of inner limiting set screws (7), the inner limiting set screws (7) are threadedly connected to the mounting ring plate (1), and the inner end heads of the inner limiting set screws (7) contact and limit the front side wall (104').

4. The turning tooling for the bearing saddle according to claim 3, characterized in that: A lock nut is threadedly connected to the inner limiting set screw (7), and the lock nut is locked on the inner side wall of the mounting ring plate (1).

5. The turning tooling for the bearing saddle according to claim 1, characterized in that: The number of the left and right positioning components is two groups, the two groups of left and right positioning components are symmetrically arranged about the axis of the mounting ring plate (1), and respectively perform left and right positioning on the two saddle billets (1'); the left and right positioning component includes an inner baffle (4) and a right-angle pressing plate (5), the inner baffle (4) is perpendicular to the flat clamping plate (3) and is fixedly connected to the inner side walls of the mounting ring plate (1) and the outer ring plate (2) at both ends respectively, the inner baffle (4) limits the edge end face (105') of the saddle billet (1); guide slots (301) are centrally opened at both ends of the flat clamping plate (3), and the right-angle pressing plate (5) is installed on the opposite side of the inner baffle (4) through a clamping bolt (10) and presses and positions the other end face of the saddle billet (1).

6. The turning tooling for the bearing saddle according to claim 5, characterized in that, A cushion bar head (501) is arranged at the top end of the right-angle pressing plate (5), and the cushion bar head (501) is clamped between the bottom surfaces (103') of the two saddle billets (1).

7. The turning tooling for the bearing saddle according to claim 1, wherein: The mounting ring plate (1) and the outer ring plate (2) are provided with limiting shallow grooves at the installation positions of the flat clamping plates (3), and each connection position is connected together through a plurality of locking screws (6).

8. The turning tooling for the bearing saddle according to claim 1, characterized in that: The periphery of the mounting ring plate (1) is provided with mounting slot openings (101), and the four mounting slot openings (101) are circumferentially and evenly distributed on the outer edge of the mounting ring plate (1); the mounting ring plate (1) is coaxially and fixedly connected to a transfer plate on a lathe through the mounting slot openings (101).

9. The turning tooling for the bearing saddle according to claim 1, wherein: Detection slot openings (201) are provided at the edge of the middle hole of the outer ring plate (2), and the two detection slot openings (201) are symmetrically arranged at the edge of the middle hole of the outer ring plate (2).

10. A method for turning a carrier saddle, characterized in that: Using the saddle turning tooling according to any one of claims 1 to 9, turning the finish-machined arc surface (101') of the saddle billet (1'), comprising the following steps: Step 1, preparation: coaxially install the saddle turning tooling on the spindle chuck of the lathe, the spindle chuck clamps the transfer plate, and the transfer plate is connected to the mounting ring plate (1); Step 2, workpiece clamping: sequentially insert two saddle billets (1') that have been initially machined on the top surface (102') and the bottom surface (103') into the frame body and arrange them coaxially face to face; clamp and position the two saddle billets (1') by adjusting the front and rear positioning components and the left and right positioning components; Step 3, turning: start the lathe and use a turning tool to synchronously machine the finish-machined arc surfaces (101') of the two saddle billets (1').

Images