Machining center milling synchronizer cone ring locking surface quick-change tool

Abstract

The utility model relates to the technical field of automobile transmissions, and discloses a machining center milling synchronizer conical ring locking surface quick-change tool which comprises a base, a clamping block, a clamping block and a clamping block. The taper positioning part is used for centering the machined part and comprises a taper positioning mandrel; the angular positioning part is used for carrying out angular limiting on the machined part and comprises an angular positioning pressing plate; the axial positioning part is used for axially limiting the machined part and comprises an M10 * 40 inner hexagon screw; and the elastic adjusting piece is used for adjusting the height of the taper positioning mandrel and comprises a compression spring. By arranging the elastic adjusting piece, the taper positioning mandrel can float in the axial direction, and the problem that the axial positioning height is not accurate due to the change of the diameter of the mouth surface of a product is solved; when different types of products are switched, the machining requirement can be met only by replacing the taper positioning mandrels with different opening surface diameters, the switching efficiency is high, and the tool preparation amount is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive transmission technology, specifically, it is a quick-change tooling for milling synchronizer cone ring locking surfaces in a machining center. Background Technology

[0002] The transmission is a crucial component of a car's powertrain, primarily used to regulate the power transmission between the engine and the wheels. It uses different gear ratios to achieve vehicle acceleration, deceleration, and power distribution for varying driving needs.

[0003] Synchronizer cone rings are a key component of a transmission, primarily functioning to reduce shock and friction during gear shifts, ensuring smooth and seamless operation. Located within the synchronizer, the main components include the engagement sleeve and synchronizer lock rings. During gear shifts, clutch power is interrupted, causing the driving and driven gears to rotate out of sync. The synchronizer cone rings quickly synchronize these gears through friction. The geometric accuracy and surface quality of the lock ring (i.e., the locking surface) directly affect its noise level and lifespan during normal operation, significantly impacting the overall lifespan of the transmission and the user experience.

[0004] When the existing tooling only needs to process the locking ring, the fixed conical centering of the tooling results in a fixed axial positioning height. This leads to several problems: the diameter of the opening face varies greatly between different product models, requiring the entire tooling to be disassembled and realigned every time a product is switched, resulting in a large workload for debugging, processing, and inspection, as well as a large amount of tooling preparation. Even for the same product model, the axial positioning height fluctuates greatly due to the influence of the product's taper and the actual machining tolerance zone of the opening face diameter. This also increases the dimensional accuracy variation in the milling height direction of the locking surface, which has a significant impact on product quality. Utility Model Content

[0005] The purpose of this utility model is to provide a quick-change tooling for milling synchronizer cone ring locking surfaces in machining centers, which solves the problem of inaccurate axial positioning height caused by changes in the diameter of the product opening in existing tooling.

[0006] This utility model is achieved through the following technical solution: a quick-change tooling for milling synchronizer cone ring locking surfaces in a machining center, comprising:

[0007] A base for placing workpieces includes a base plate with fastening screw holes.

[0008] Tapered positioning components, used for centering machined parts, including tapered positioning mandrels;

[0009] An angular positioning component is used to limit the angle of a workpiece, including an angular positioning pressure plate, wherein the angular positioning pressure plate is provided with an angular limiting groove;

[0010] An axial positioning component is used to axially limit the workpiece, including an M10×40 socket head cap screw, wherein the M10×40 socket head cap screw mates with the fastening screw hole;

[0011] An elastic adjustment element, used to adjust the height of the tapered positioning mandrel, includes a compression spring, one end of which is disposed on the base plate and the other end of which is disposed on the tapered positioning mandrel.

[0012] To better realize this utility model, the elastic adjustment component further includes a spring positioning post, and the tapered positioning mandrel is provided with a spring embedding hole. One end of the compression spring is sleeved on the spring positioning post, and the other end is inserted into the spring embedding hole.

[0013] To better realize this utility model, an M6×16 hexagon socket screw is further provided on the spring positioning post, and the M6×16 hexagon socket screw is installed on the base plate.

[0014] To better realize this utility model, the tapered positioning mandrel is further provided with an anti-detachment groove, and an anti-detachment pressure plate is installed on the base plate by M4×10 countersunk screws, the anti-detachment pressure plate being embedded in the anti-detachment groove.

[0015] To better realize this utility model, the axial positioning component further includes an end face pressure plate, which is installed on the angular positioning pressure plate by an M4×16 internal hex screw.

[0016] To better realize this utility model, the axial positioning component further includes an open pressure plate. The diameter of the central hole provided on the angular positioning pressure plate and the end face pressure plate for the M10×40 socket head cap screw to pass through is larger than the diameter of the M10×40 socket head cap screw, but smaller than the diameter of the open pressure plate.

[0017] To better realize this utility model, the base plate is further provided with multiple mounting slots, and a positioning step surface is provided at one of the mounting slots.

[0018] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0019] (1) By setting up an elastic adjustment component, this utility model enables the tapered positioning mandrel to float axially, which solves the problem of inaccurate axial positioning height caused by changes in the product opening diameter; when switching between different models of products with different opening diameters (when the difference is large), only the tapered positioning mandrel with different opening diameters needs to be replaced to meet the processing requirements, resulting in high switching efficiency and a significant reduction in tooling preparation.

[0020] (2) By setting spring positioning posts and spring embedding holes, this utility model effectively prevents the compression spring from bending; at the same time, it prevents the compression spring from sliding on the base plate, ensuring that multiple compression springs are evenly distributed, and providing a uniform lifting force for the tapered positioning mandrel.

[0021] (3) By setting an open pressure plate, this utility model makes it faster and more convenient to pick up and put down products, and further enhances work efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 Cross-sectional view of the overall structure of this utility model Figure 1 .

[0024] Figure 3 Cross-sectional view of the overall structure of this utility model Figure 2 .

[0025] Figure 4 This is an exploded view of the overall structure of this utility model.

[0026] Figure 5 This is a schematic diagram of the base plate structure.

[0027] Figure 6 This is a schematic diagram of the tapered positioning mandrel structure.

[0028] Wherein: 11-machined part; 101-base plate; 102-mounting slot; 103-fastening screw hole; 104-tapered positioning mandrel; 105-spring embedding hole; 106-anti-disengagement groove; 107-angular positioning pressure plate; 108-end face pressure plate; 109-opening pressure plate; 110-M10×40 socket head cap screw; 111-compression spring; 112-spring positioning post; 113-anti-disengagement pressure plate; 114-positioning step surface; 115-angular limiting groove; 116-M6×16 socket head cap screw; 117-M4×10 countersunk screw; 118-M4×16 socket head cap screw. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1:

[0032] This embodiment provides a quick-change fixture for milling the synchronizer tapered ring locking surface in a machining center, specifically as follows: Figures 1-4 As shown, it includes:

[0033] The base, for placing the workpiece 11, includes a base plate 101, on which fastening screw holes 103 are provided; the base plate 101 is provided with a plurality of mounting slots 102, and a positioning step surface 114 is provided at one of the mounting slots 102.

[0034] A tapered positioning component, used to center the workpiece 11, includes a tapered positioning mandrel 104;

[0035] An angular positioning component is used to limit the angle of the workpiece 11, including an angular positioning pressure plate 107, on which an angular limiting groove 115 is provided;

[0036] An axial positioning component is used to axially limit the workpiece 11, including an M10×40 socket head cap screw 110, which engages with the fastening screw hole 103.

[0037] An elastic adjustment element, used to adjust the height of the tapered positioning mandrel 104, includes a compression spring 111, one end of which is disposed on the base plate 101 and the other end of which is disposed on the tapered positioning mandrel 104.

[0038] The installation and usage process is as follows:

[0039] a. The base plate 101 is installed on a five-axis machine tool by using multiple screws to fit the mounting slot 102. During installation, the positioning step surface 114 is used as a reference to prevent misalignment.

[0040] b. Place the compression spring 111 in the base plate 101, and then place the tapered positioning mandrel 104 on the base plate 101. At this time, the base plate 101 and the tapered positioning mandrel 104 are slidably connected, and the radial gap between its outer diameter and the inner hole of the base plate 101 is 0.005-0.015mm. At this time, the compression spring 111 will lift the tapered positioning mandrel 104.

[0041] c. Place the workpiece 11 stably on the tapered positioning mandrel 104. Due to the tapered design of the tapered positioning mandrel 104, the workpiece 11 will automatically be centered.

[0042] d. Place the angular positioning plate 107 on the workpiece 11, so that the angular limiting groove 115 holds the workpiece 11 in place; then install the M10×40 socket head cap screw 110 in the fastening screw hole 103, so that the M10×40 socket head cap screw 110 presses the angular positioning plate 107; at this time, the angular positioning plate 107 presses down on the workpiece 11, and the workpiece 11 presses down on the tapered positioning mandrel 104, until the workpiece 11 is in contact with the end face of the base plate 101, at which point the workpiece 11 is completely limited; the installation is now complete, and the processing operation begins.

[0043] By incorporating an elastic adjustment element, the tapered positioning mandrel 104 can float axially, resolving the issue of inaccurate axial positioning height caused by variations in the product's aperture diameter. Furthermore, when switching between different product models with varying aperture diameters (especially when differences are significant), only the tapered positioning mandrel with the different aperture diameter needs to be replaced to meet processing requirements. Simultaneously, tooling costs are low, and only different tapered positioning mandrels are required for similar products; this significantly reduces the increased debugging time caused by product switching, improving production debugging efficiency; and for the same product model, it is unaffected by inaccurate axial positioning height due to variations in aperture diameter, greatly improving product quality.

[0044] Example 2:

[0045] This embodiment further expands the elastic adjustment component based on the above embodiments, specifically as follows: Figure 3 , Figure 4 , Figure 6 As shown, the elastic adjustment component also includes a spring positioning post 112, and a spring embedding hole 105 is provided on the tapered positioning mandrel 104. One end of the compression spring 111 is sleeved on the spring positioning post 112, and the other end is inserted into the spring embedding hole 105.

[0046] Furthermore, an M6×16 hexagon socket screw 116 is provided on the spring positioning post 112, and the M6×16 hexagon socket screw 116 is mounted on the base plate 101.

[0047] Before installing the compression spring 111, place the spring positioning post 112 on the base plate 101, and then lock the spring positioning post 112 with an M6×16 socket head cap screw 116. Then, put the compression spring 111 on the spring positioning post 112. Finally, when installing the tapered positioning mandrel 104, insert the compression spring 111 into the spring insertion hole 105 to ensure that the compression spring 111 can be axially limited and prevent the compression spring 111 from bending. At the same time, it prevents the compression spring 111 from sliding on the base plate 101 and ensures that multiple compression springs 111 are evenly distributed to provide a uniform lifting force for the tapered positioning mandrel 104.

[0048] Furthermore, the tapered positioning mandrel 104 is provided with an anti-disengagement groove 106, and an anti-disengagement pressure plate 113 is installed on the base plate 101 by M4×10 countersunk screws 117, the anti-disengagement pressure plate 113 being embedded in the anti-disengagement groove 106. The anti-disengagement pressure plate 113 limits the tapered positioning mandrel 104, thereby restricting its sliding and preventing it from being completely pushed out of the base plate 101.

[0049] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0050] Example 3:

[0051] This embodiment further extends the above embodiment, specifically as follows: Figures 1-3 As shown, the axial positioning component also includes an end face pressure plate 108, which is mounted on the angular positioning pressure plate 107 by an M4×16 socket head cap screw 118. The end face pressure plate 108 ensures that the pressing force of the M10×40 socket head cap screw 110 is evenly distributed on the angular positioning pressure plate 107, preventing workpiece deformation caused by concentrated force.

[0052] Furthermore, the axial positioning component also includes an open pressure plate 109. The diameter of the central hole on the angular positioning pressure plate 107 and the end face pressure plate 108 for the M10×40 socket head cap screw 110 to pass through is larger than the diameter of the M10×40 socket head cap screw 110, but smaller than the diameter of the open pressure plate 109. With the above configuration, when it is necessary to pick up or put down the workpiece 11, it is only necessary to loosen the M10×40 socket head cap screw 110 and then remove the open pressure plate 109. At this time, the angular positioning pressure plate 107, the end face pressure plate 108, and the workpiece 11 can all be directly removed or installed without disassembling all parts, further enhancing work efficiency.

[0053] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0054] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A quick-change tooling for milling the locking surface of a synchronizer cone ring in a machining center, characterized in that, include: A base for placing the workpiece (11) includes a base plate (101) having fastening screw holes (103) on the base plate (101); A tapered positioning element, used to center the workpiece (11), includes a tapered positioning mandrel (104); An angular positioning component is used to limit the workpiece (11) in the angular direction, including an angular positioning pressure plate (107), wherein an angular limiting slot (115) is provided on the angular positioning pressure plate (107); An axial positioning component is used to axially limit the workpiece (11), including an M10×40 socket head cap screw (110), which engages with the fastening screw hole (103); An elastic adjustment element, used to adjust the height of the tapered positioning mandrel (104), includes a compression spring (111), one end of which is disposed on the base plate (101) and the other end of which is disposed on the tapered positioning mandrel (104).

2. The quick-change fixture for milling synchronizer tapered ring locking surface in a machining center according to claim 1, characterized in that: The elastic adjustment component also includes a spring positioning post (112), and the tapered positioning mandrel (104) is provided with a spring embedding hole (105). One end of the compression spring (111) is sleeved on the spring positioning post (112), and the other end is inserted into the spring embedding hole (105).

3. The quick-change fixture for milling synchronizer tapered ring locking surface in a machining center according to claim 2, characterized in that: An M6×16 hexagon socket screw (116) is provided on the spring positioning post (112), and the M6×16 hexagon socket screw (116) is installed on the base plate (101).

4. A quick-change fixture for milling synchronizer tapered ring locking surfaces in a machining center according to any one of claims 1-3, characterized in that: The tapered positioning mandrel (104) is provided with an anti-detachment groove (106), and an anti-detachment pressure plate (113) is installed on the base plate (101) by means of an M4×10 countersunk screw (117), and the anti-detachment pressure plate (113) is embedded in the anti-detachment groove (106).

5. A quick-change fixture for milling synchronizer tapered ring locking surfaces in a machining center according to claim 4, characterized in that: The axial positioning component also includes an end face pressure plate (108), which is mounted on the angular positioning pressure plate (107) by an M4×16 socket head cap screw (118).

6. A quick-change fixture for milling synchronizer tapered ring locking surfaces in a machining center according to claim 5, characterized in that: The axial positioning component also includes an open pressure plate (109). The diameter of the central hole provided on the angular positioning pressure plate (107) and the end face pressure plate (108) for the M10×40 socket head cap screw (110) to pass through is larger than the diameter of the M10×40 socket head cap screw (110), but smaller than the diameter of the open pressure plate (109).

7. A quick-change fixture for milling synchronizer tapered ring locking surfaces in a machining center according to claim 1, characterized in that: The base plate (101) is provided with a plurality of mounting slots (102), and a positioning step surface (114) is provided at one of the mounting slots (102).

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