A special milling cutter mold for hydraulic caliper jaw plates

Abstract

This utility model discloses a special milling cutter mold for hydraulic caliper jaw plates, including a shank portion and a cutter body portion. The shank portion includes a tapered adaptation section that matches the taper hole of the machining equipment spindle. The cutter body portion includes a cutter body, and the tapered adaptation section is connected to the cutter body via a connector. The cutter body has multiple milling cutter units circumferentially, whose cutting edges are adapted to the tooth profile grooves of the jaw plate and are staggered in height. There are chip removal grooves between adjacent milling cutter units. This mold has strong adaptability, reasonable structure, smooth chip removal, good durability, and high machining efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic caliper machining mold technology, specifically to a special milling cutter mold for hydraulic caliper jaw plates. Background Technology

[0002] As a core actuator in automotive braking systems, the machining quality of the hydraulic caliper's die plate directly determines braking accuracy and driving safety. The die plate surface needs to be machined with a high-precision tooth profile structure to achieve precise transmission of the caliper piston. However, existing machining technologies present many problems that urgently need to be solved.

[0003] Currently, the industry mostly uses general-purpose end mills for machining threaded plates. The cutting edge profile of these end mills is standardized and cannot be fully adapted to the special tooth profile grooves of hydraulic caliper threaded plates, resulting in poor tooth profile consistency after machining. Some products require secondary re-grinding to meet assembly requirements. At the same time, the shank and cutter body of traditional end mills are mostly integrally welded structures. When the cutter body is partially worn or the cutting edge is broken, the entire cutter needs to be replaced, which significantly increases production costs.

[0004] During the cutting process, the chip removal structure of existing milling cutters is poorly designed, causing chips to accumulate on the cutter body surface. This not only leads to secondary cutting and scratches on the die plate surface but also accelerates tool wear, resulting in a continuous decline in machining accuracy. Furthermore, general-purpose milling cutters are mostly made of high-speed steel, requiring frequent machine stops for sharpening when machining die plates made of high-strength alloy materials, severely impacting production efficiency. With the increasing demands for lightweight and high-precision braking systems in new energy vehicles, traditional milling cutters can no longer meet the large-scale, high-quality production needs of hydraulic caliper die plates. Therefore, there is an urgent need to develop a specialized milling cutter mold with a highly targeted and optimized structure. Utility Model Content

[0005] To address the problems of poor compatibility between milling cutters and hydraulic caliper jaw plates, low machining accuracy, short service life, high replacement costs, and poor chip removal in existing technologies, this utility model provides a milling cutter mold for hydraulic caliper jaw plates with optimized structure, strong adaptability, and easy maintenance.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] A special milling cutter mold for hydraulic caliper jaw plates includes a shank portion and a cutter body portion. The shank portion is used to achieve a stable connection with the spindle of the machining equipment and has an overall stepped cylindrical structure. The shank portion includes a tapered adaptation section that matches the tapered hole of the machining equipment spindle. The cutter body portion includes a cutter body. The tapered adaptation section is connected to the cutter body through a connector. Multiple sets of milling cutter units are evenly distributed on the circumferential surface of the cutter body. Each milling cutter unit includes multiple cutting edges that are staggered in height and connected to the cutter body. The contour curve of the cutting edge is perfectly adapted to the tooth groove contour of the hydraulic caliper jaw plate. A chip removal groove connected to the cutter body is provided between two adjacent sets of milling cutter units.

[0008] Preferably, the outer diameter of the handle portion is larger than the maximum outer diameter of the handle portion.

[0009] Preferably, both the handle and the blade body are made of cemented carbide.

[0010] Preferably, the tapered adapter section is fixedly connected to the connector.

[0011] Preferably, the connector is detachably connected to the blade body.

[0012] Preferably, the cutter body and the chip removal groove are manufactured as a single piece.

[0013] Preferably, the milling cutter unit has at least four sets.

[0014] Preferably, the blade has two blades.

[0015] Preferably, the blade is triangular.

[0016] This utility model has the following beneficial effects:

[0017] 1. Strong adaptability: The cutting edge profile is perfectly matched with the tooth groove profile of the hydraulic caliper jaw plate, which can significantly improve machining accuracy and ensure product quality.

[0018] 2. Reasonable structure: The connection between the handle and the blade body is achieved through a connector, and the connector and the blade body are detachable, which facilitates the replacement and maintenance of the blade body and reduces the cost of use.

[0019] 3. Smooth chip removal: Chip removal grooves are provided between adjacent milling cutter units to remove chips in a timely manner and avoid chip accumulation that affects machining accuracy.

[0020] 4. High durability: The handle and blade are made of cemented carbide, which has high strength and good wear resistance, extending the service life of the tool.

[0021] 5. High processing efficiency: Multiple milling cutter units combined with a staggered cutting edge layout can achieve high-efficiency cutting and improve production efficiency. Attached Figure Description

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

[0023] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0024] In the attached figures, the following labels are used:

[0025] 1. Tapered adapter section; 2. Connector; 3. Cutter body; 4. Milling cutter unit; 5. Cutting edge; 6. Chip removal groove. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] like Figure 1-2 As shown, a special milling cutter mold for hydraulic caliper jaw plates includes a shank portion and a cutter body portion. The shank portion is used to achieve a stable connection with the spindle of the machining equipment. Its overall shape is a stepped cylindrical structure. The shank portion includes a tapered adaptation section 1 that matches the tapered hole of the machining equipment spindle. The cutter body portion includes a cutter body 3. The tapered adaptation section 1 is connected to the cutter body 3 through a connector 2. Multiple sets of milling cutter units 4 are evenly distributed on the circumferential surface of the cutter body 3. The milling cutter unit 4 includes multiple cutting edges 5 that are distributed at different heights and connected to the cutter body 3. The contour curve of the cutting edge 5 is completely adapted to the tooth groove contour of the hydraulic caliper jaw plate. A chip removal groove 6 connected to the cutter body 3 is provided between two adjacent sets of milling cutter units 4.

[0028] The outer diameter of the tool holder is larger than the maximum outer diameter of the tool holder. The advantages of the above setting are: the actual outer diameter of the tool body should be larger than the maximum outer diameter of the tool holder. This design can provide sufficient structural space for the tool body, allowing it to stably install multiple sets of milling cutter units 4 and chip vents 6. At the same time, it enhances the rigidity of the tool body, resists the cutting force during milling, reduces deformation, and ensures machining accuracy.

[0029] Both the shank and the tool body are made of cemented carbide. The advantages of this design are: cemented carbide has high hardness and strong wear resistance, which can withstand the severe friction and impact during milling, significantly extending the service life of the die, reducing the frequency of replacement, lowering production costs, and making it suitable for machining hydraulic caliper jaws made of high-strength alloy materials.

[0030] Tapered adapter section 1 is fixedly connected to connector 2. The advantages of the above setting are: the fixed connection method, such as welding, can ensure a firm connection between the two, avoid relative displacement or loosening during high-speed rotation and under stress, ensure stable power transmission, reduce the impact of vibration on machining accuracy, and improve the overall structural stability of the mold.

[0031] The connector 2 is detachably connected to the cutter body 3. The advantages of the above configuration are: when the cutter body 3 or the milling cutter unit 4 or the cutting edge 5 on it is worn or damaged, the cutter body 3 can be disassembled and replaced separately without replacing the entire mold, thus reducing maintenance costs and improving the economic efficiency and flexibility of mold use.

[0032] The cutter body 3 and the chip removal groove 6 are manufactured as a single piece. The advantages of this design are: the single-piece manufacturing ensures the connection strength and dimensional accuracy between the chip removal groove 6 and the cutter body 3, avoids poor chip removal due to assembly gaps, reduces stress concentration, enhances the overall structural stability of the cutter body 3, and extends its service life.

[0033] The milling cutter unit 4 has at least four sets. The advantages of the above arrangement are: multiple sets of milling cutter units 4 can participate in cutting simultaneously, disperse the cutting force, improve machining efficiency, make cutting more uniform, reduce the load on a single unit, reduce the wear rate of the cutting edge 5, and ensure the consistency of the machined surface quality.

[0034] There are two cutting edges 5. The advantages of the above arrangement are: the two cutting edges 5 can work together to share the cutting task, increase the single cutting amount, and enhance the cutting effect. At the same time, the staggered distribution can realize layered cutting, reduce the contact area between the tool and the workpiece, and reduce cutting resistance and heat generation.

[0035] The cutting edge 5 is a triangular cutting edge. The advantages of the above design are: the triangular structure gives the cutting edge 5 high strength and rigidity, strong impact resistance, and it is not easy to break. In addition, the cutting edge angle is reasonable, which can effectively reduce cutting force and friction, improve cutting efficiency and surface finish, and is suitable for precision milling of complex tooth grooves.

[0036] Working principle

[0037] The working principle of this hydraulic caliper jaw cutter mold is based on the coordinated operation of various structures to achieve precise milling of the hydraulic caliper jaw plate. First, the tapered adapter section 1 of the tool holder is connected to the tapered hole of the machining equipment spindle. The tapered fit provides a stable clamping, providing a stable foundation for the entire machining process and preventing shaking caused by loose connection during machining, which would affect machining accuracy.

[0038] Driven by the processing equipment, the mold rotates as a whole. The tapered fitting section 1 transmits power to the cutter body 3 through the connector 2, causing the cutter body 3 to rotate synchronously. Multiple sets of milling cutter units 4, evenly distributed on the circumferential surface of the cutter body 3, rotate together with the cutter body 3. The cutting edges 5, which are staggered in height in each set of milling cutter units 4, contact the hydraulic caliper die blank. Since the contour curve of the cutting edge 5 is perfectly matched with the tooth groove contour of the die, it can accurately cut the die blank during the rotation process, forming a tooth groove structure that meets the requirements in one go.

[0039] Meanwhile, the chip removal groove 6 between two adjacent sets of milling cutter units 4 plays an important role in the machining process. As the cutter body 3 rotates, the chips generated by cutting are promptly guided into the chip removal groove 6 and discharged along the chip removal groove 6 under the action of centrifugal force, etc., to avoid the accumulation of chips on the surface of the cutter body 3 or the cutting area, to prevent the occurrence of secondary cutting, to reduce the wear of the cutting edge 5 and the scratches on the surface of the die plate, and to ensure the continuity and accuracy stability of the machining. Example 1

[0040] Milling cutter dies suitable for small hydraulic caliper jaw plates

[0041] This embodiment is designed for a small hydraulic caliper jaw plate (tooth groove depth ≤ 5mm), and the overall structure is as follows:

[0042] The taper adapter section 1 of the tool holder adopts a standard taper of 7:24 and has a length of 80mm; the connector 2 is a cylindrical structure that is fixed to the taper adapter section 1 by welding, and has 4 evenly distributed threaded holes at the end away from the taper adapter section 1.

[0043] The cutter body 3 is made of cemented carbide forging, with an outer diameter 15mm larger than the maximum outer diameter of the shank and a length of 100mm. Four sets of milling cutter units 4 are evenly distributed around the circumference, each set containing two triangular cutting edges 5 with a cutting edge height difference of 3mm. The contour curve is perfectly matched with the shallow tooth profile of the small die plate. The chip removal groove 6 between adjacent milling cutter units 4 is an arc-shaped structure with a depth of 8mm and a helix angle of 30°, and is integrally milled with the cutter body 3.

[0044] The connector 2 and the cutter body 3 are detachably connected by an M8 bolt. Example 2

[0045] Milling die for medium-sized hydraulic caliper jaw plates

[0046] This embodiment is designed for medium-sized hydraulic caliper jaw plates (tooth groove depth 5-10mm), and the structure is optimized as follows:

[0047] The length of the tapered adapter section 1 is increased to 100mm, while the taper remains at 7:24. The connector 2 adopts a stepped structure and forms a reinforced transition zone after being welded to the tapered adapter section 1. Its end face is provided with 6 threaded holes for connecting the cutter body 3.

[0048] The outer diameter of the cutter body 3 is 20mm larger than the maximum outer diameter of the shank, and the length is 120mm. The surface is coated with a 3μm thick TiAlN coating. There are 6 sets of milling cutter units 4 distributed circumferentially, each set containing 2 triangular cutting edges 5 with a cutting edge height difference of 4mm. The cutting edge is blunted by 0.08mm and the profile is adapted to the medium-depth tooth profile groove of the medium-sized die plate. The chip evacuation groove 6 has a depth of 10mm, a helix angle of 35°, and a rounded corner R1.5mm at the edge of the groove.

[0049] Connector 2 is connected to the cutter body 3 by M10 bolts. Example 3

[0050] Milling die for large hydraulic caliper jaw plates

[0051] This embodiment is designed for large hydraulic caliper jaw plates (tooth groove depth > 10mm), and strengthens the structural strength:

[0052] The tapered adapter section 1 is 120mm long and has a 7:24 tapered fit. The outer wall has three widened positioning slots with a width of 8mm, a depth of 3mm, and a spacing of 30mm. The connector 2 is a thick-walled cylindrical structure that is vacuum welded to the tapered adapter section 1. The end face has eight high-strength threaded holes.

[0053] The outer diameter of the cutter body 3 is 25mm larger than the maximum outer diameter of the shank, and the length is 150mm. It is made of ultra-fine grain cemented carbide. There are 8 sets of milling cutter units 4 distributed circumferentially, each set containing 2 large triangular cutting edges 5 with a height difference of 5mm, a rake angle of 12° and a clearance angle of 10°. The contour is precisely matched to the deep tooth groove of the large die plate. The chip removal groove 6 has a depth of 12mm, a helix angle of 40°, and a bottom curvature radius of 15mm to ensure smooth discharge of large amounts of chips.

[0054] Connector 2 is connected to the cutter body 3 by M12 high-strength bolts.

[0055] All three embodiments achieve functional adaptation through a three-section structure of "tapered adaptation section - connector - cutter body". The differences are mainly reflected in the cutter body size, the number of milling cutter units, the coating treatment and the connection strength design, respectively meeting the processing requirements of hydraulic caliper jaw plates of different specifications.

[0056] The examples provided in this utility model are not intended to limit the implementation methods. Those skilled in the art will recognize that various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A special milling cutter mold for hydraulic caliper jaw plates, characterized in that, The tool includes a shank and a body. The shank is used to achieve a stable connection with the spindle of the machining equipment. It has a stepped cylindrical structure. The shank includes a tapered fitting section (1) that matches the tapered hole of the spindle of the machining equipment. The body includes a body (3). The tapered fitting section (1) is connected to the body (3) through a connector (2). Multiple sets of milling cutter units (4) are evenly distributed on the circumferential surface of the body (3). Each milling cutter unit (4) includes multiple cutting edges (5) that are staggered and connected to the body (3). The contour curve of the cutting edge (5) is perfectly matched with the tooth groove contour of the hydraulic caliper jaw plate. A chip removal groove (6) connected to the body (3) is provided between two adjacent sets of milling cutter units (4).

2. The hydraulic caliper jaw cutter mold according to claim 1, characterized in that, The outer diameter of the handle portion is greater than the maximum outer diameter of the handle portion.

3. The special milling cutter mold for hydraulic caliper jaw plates according to claim 2, characterized in that, Both the handle and the blade body are made of cemented carbide.

4. A special milling cutter mold for hydraulic caliper jaw plates according to claim 1, characterized in that, The tapered adapter section (1) is fixedly connected to the connector (2).

5. A special milling cutter mold for hydraulic caliper jaw plates according to claim 1, characterized in that, The connector (2) is detachably connected to the blade body (3).

6. A special milling cutter mold for hydraulic caliper jaw plates according to claim 1, characterized in that, The blade body (3) and the chip removal groove (6) are manufactured as a single piece.

7. A special milling cutter mold for hydraulic caliper jaw plates according to claim 1, characterized in that, The milling cutter unit (4) has at least four sets.

8. A special milling cutter mold for hydraulic caliper jaw plates according to claim 1, characterized in that, The blade (5) has two blades.

9. A special milling cutter mold for hydraulic caliper jaw plates according to claim 8, characterized in that, The blade (5) is a triangular blade.

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