Special fixture for grinding hard alloy milling cutter
By designing a clamp for the rotating sleeve and grip, combined with sliding grooves, sliding blocks and reset coil springs, the problem of cemented carbide milling cutters not easy to hold during grinding and repair is solved, convenient clamping and stable fixing is achieved, avoiding the wear of the milling cutter surface and improving operating safety and comfort.
Patent Information
- Application Number
- CN202422159489.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-03
AI Technical Summary
During the grinding and repair process, the cemented carbide milling cutter is not easy to hold due to the smooth surface of the tool holder and the large amount of dust and heat, which affects the safety and efficiency of operation.
A clamp including a rotating sleeve, grip, sliding groove, sliding block, reset coil spring and trapezoidal clamping block is designed. Through the cooperation of the tapered ring and trapezoidal clamping block, convenient clamping of milling cutters of different diameters is achieved, and comfort and anti-slip through plastic sheets and silicone sleeves are improved.
It realizes convenient clamping and stable fixation of cemented carbide milling cutters, avoids surface wear of milling cutters, improves operating safety and comfort, and is suitable for grinding and repair of milling cutters of different diameters.
Smart Images
Figure CN223044216U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fixtures, and particularly relates to a special fixture for grinding carbide milling cutters. Background Technique
[0002] A carbide milling cutter is a common metal cutting tool usually prepared by mixing multiple materials such as sodium tungstate, cobalt powder, and tungsten carbide in a certain proportion, and has high hardness, high wear resistance, and high corrosion resistance. During its use, it is necessary to grind the cutter head to repair the edge of the milling cutter, so that the milling cutter is restored to a new state and the use cost of the milling cutter is reduced.
[0003] At present, during the grinding and repair process of carbide milling cutters, workers need to hold the milling cutters by hand. However, the surface of the handle part of the milling cutter is smooth, and a large amount of heat is generated by dust during the grinding and repair process, resulting in difficulty in holding. Therefore, we propose a special fixture for grinding carbide milling cutters. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a special fixture for grinding carbide milling cutters, which has the advantages of being convenient for clamping the carbide milling cutter during grinding and repair, facilitating the holding of the milling cutter, being applicable to milling cutters with different diameters, and having a convenient clamping operation, and solves the problem that during the grinding and repair process of current carbide milling cutters, workers need to hold the milling cutter by hand, but the surface of the handle part of the milling cutter is smooth, and a large amount of heat is generated by dust during the grinding and repair process, resulting in difficulty in holding.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A special fixture for grinding carbide milling cutters, including a rotating sleeve and a handle. A stepped hole is provided at the axial center position of one end of the handle. A plurality of sliding grooves are equidistantly arranged in a circular array on the outer surface of the handle near the stepped hole. A sliding block is installed inside each sliding groove. A return spiral spring is connected to the outer surface of each sliding block near the stepped hole. A trapezoidal clamping block is provided on the outside of each sliding block. The handle and the rotating sleeve are connected by a connecting thread. A tapered ring is provided at a position near the outer side of the inner wall of the rotating sleeve.
[0006] Preferably, a plastic plate is installed on the outer surface of each trapezoidal clamping block near the stepped hole. The texture of the plastic plate is softer than that of the carbide milling cutter. When the trapezoidal clamping block clamps the milling cutter, it will not cause wear or scratches on the surface of the milling cutter.
[0007] Preferably, a hanging ring is installed at one end of the handle away from the stepped hole. When this fixture is not in use, it can be hung on a hook through the hanging ring, so as to facilitate the placement of this fixture.
[0008] Preferably, a rubber sleeve is sleeved on a side of the outer surface of the handle facing away from the stepped hole, thereby improving the comfort when holding the handle.
[0009] Preferably, the outer surface of the rubber sleeve is provided with anti-skid patterns, which play an anti-skid role when the rubber sleeve is held by hand.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0011] 1. The utility model achieves the effect of facilitating the clamping of the carbide milling cutter in grinding and repairing by arranging a rotating sleeve, a gripping handle, a connecting thread, a sliding groove, a sliding block, a reset coil spring, a tapered ring, a trapezoidal clamping block and a stepped hole, so as to facilitate the holding of the milling cutter and be suitable for milling cutters of different diameters, and the clamping operation is convenient. When in use, the shank end of the carbide milling cutter is inserted into the stepped hole, and the rotating sleeve is rotated to make the tapered ring move toward the stepped hole, and the inclined inner wall of the tapered ring contacts the inclined surface of the trapezoidal clamping block. In the process of the movement of the tapered ring, the trapezoidal clamping blocks in a ring array are forced to move toward the stepped hole, thereby clamping and fixing the shank of the milling cutter. The user can pick up the milling cutter by holding the gripping handle, and grind and repair the milling cutter through the milling cutter grinding and repairing equipment. After the grinding and repair is completed, the rotating sleeve is rotated in the opposite direction, so that the compressed reset coil spring is released and pushes the trapezoidal clamping block to move and reset, and the clamping and fixing of the shank of the milling cutter are released, and the milling cutter can be removed.
[0012] 2. The utility model achieves the effect of preventing the surface of the carbide milling cutter from being worn or scratched when the trapezoidal clamping block clamps the carbide milling cutter by arranging the plastic plate. The plastic plate is softer than the carbide milling cutter, so when the trapezoidal clamping block clamps the milling cutter, it will not cause wear or scratches on the surface of the milling cutter.
[0013] 3. The utility model improves the comfort of the user when holding the handle by providing a silicone sleeve, and facilitates the grinding and repair of the carbide milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0015] Figure 2 It is a partial three-dimensional schematic diagram of the handle of the utility model;
[0016] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of A.
[0018] Reference numerals: 1, rotating sleeve; 2, connecting thread; 3, rubber sleeve; 4, handle; 5, hanging ring; 6, plastic plate; 7, trapezoidal clamping block; 8, sliding block; 9, sliding groove; 10, tapered ring; 11, stepped hole; 12, return helical spring. Detailed implementation mode
[0019] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0020] Embodiment 1
[0021] As Figures 1-4 shown, a special fixture for grinding carbide milling cutters proposed by the present utility model includes a rotating sleeve 1 and a handle 4. A stepped hole 11 is provided at the axial center position of one end of the handle 4. The shank ends of carbide milling cutters with different diameters can be inserted into the stepped hole 11, which plays a role in positioning the clamped and fixed milling cutter, and also improves the stability of the milling cutter after being clamped and fixed. A plurality of sliding grooves 9 are equally spaced and arranged in a circular array on the outer surface of the handle 4 near the stepped hole 11. A sliding block 8 is installed inside each sliding groove 9. A return helical spring 12 is connected to the outer surface of each sliding block 8 near the stepped hole 11. A trapezoidal clamping block 7 is provided on the outside of each sliding block 8. The trapezoidal clamping block 7 and the sliding block 8 are integrally processed. The handle 4 and the rotating sleeve 1 are connected by a connecting thread 2. Connecting threads 2 are provided on the outer surface of the handle 4 near the stepped hole 11 and the inner wall of the rotating sleeve 1. A tapered ring 10 is provided at a position near the outside of the inner wall of the rotating sleeve 1. The inclined inner wall of the tapered ring 10 contacts the inclined outer surface of the trapezoidal clamping block 7.
[0022] When the present utility model is in use, the shank end of the carbide milling cutter is inserted into the stepped hole 11. The rotating sleeve 1 is rotated to make the tapered ring 10 move towards the stepped hole 11, and the inclined inner wall of the tapered ring 10 contacts the inclined surface of the trapezoidal clamping block 7. Then, during the movement of the tapered ring 10, the trapezoidal clamping blocks 7 arranged in a circular array are forced to move towards the stepped hole 11, thereby clamping and fixing the shank part of the milling cutter. The user can hold the handle 4 to pick up the milling cutter and perform grinding and repair on the milling cutter through a milling cutter grinding and repair device. After the grinding and repair is completed, the rotating sleeve 1 is rotated in the reverse direction, and the compressed return helical spring 12 is released and pushes the trapezoidal clamping block 7 to move back to its original position, releasing the clamping and fixing of the shank part of the milling cutter, and the milling cutter can be taken down.
[0023] Embodiment 2
[0024] As Figures 1-3As shown in the figure, a special fixture for grinding carbide milling cutters proposed by the present utility model, compared with the first embodiment, this embodiment further includes that a plastic plate 6 is installed on one side of the outer surface of each trapezoidal clamping block 7 close to the stepped hole 11, and a hanging ring 5 is installed at one end of the handle 4 away from the stepped hole 11. When this fixture is not in use, it can be hung on a hook through the hanging ring 5 to facilitate the placement of this fixture. A rubber sleeve 3 is sleeved on one side of the outer surface of the handle 4 away from the stepped hole 11. The outer surface of the rubber sleeve 3 is provided with anti-slip lines. The rubber sleeve 3 improves the comfort of the user holding the handle 4, and the anti-slip lines play an anti-slip role.
[0025] In this embodiment, the texture of the plastic plate 6 is softer than that of the carbide milling cutter. When the trapezoidal clamping block 7 clamps the milling cutter, it will not cause wear or scratches on the surface of the milling cutter.
[0026] The above specific embodiments are only several preferred embodiments of the present utility model. Based on the technical solution of the present utility model and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A special fixture for grinding carbide milling cutters, comprising a rotating sleeve (1) and a handle (4), characterized in that: A stepped hole (11) is provided at the axial center position of one end of the handle (4); a plurality of sliding grooves (9) are equidistantly provided in a circular array on the side of the outer surface of the handle (4) close to the stepped hole (11); a sliding block (8) is installed inside each of the sliding grooves (9); a return coil spring (12) is connected to the side of the outer surface of each sliding block (8) close to the stepped hole (11); a trapezoidal clamping block (7) is provided on the outer side of each sliding block (8); the handle (4) and the rotating sleeve (1) are connected via a connecting thread (2); a conical ring (10) is provided on the inner wall of the rotating sleeve (1) close to the outer side.
2. The special fixture for grinding carbide milling cutters according to claim 1, characterized in that: A plastic plate (6) is installed on one side of the outer surface of each trapezoidal clamping block (7) close to the stepped hole (11).
3. The special fixture for grinding carbide milling cutters according to claim 1, characterized in that: A hanging ring (5) is installed at one end of the handle (4) away from the stepped hole (11).
4. The special fixture for grinding carbide milling cutters according to claim 1, characterized in that: A rubber sleeve (3) is sleeved on the side of the outer surface of the handle (4) facing away from the stepped hole (11).
5. The special fixture for grinding carbide milling cutters according to claim 4, characterized in that: The outer surface of the rubber sleeve (3) is provided with anti-slip patterns.