Combined welding electrode coping cutter

Abstract

The utility model discloses a combined type welding electrode coping cutter which comprises a cutter holder, a main cutting edge, an auxiliary cutting edge and a fixing screw. Wherein an inner cavity of the tool apron is provided with two blade mounting holes penetrating through the tool apron, a main cutting edge and an auxiliary cutting edge are respectively mounted in the two blade mounting holes, the main cutting edge and the auxiliary cutting edge are fixedly connected with the tool apron through fixing screws, and chip grooves are formed in the positions, located on one sides of the blade mounting holes, in the tool apron. The service life of the coping cutter is greatly prolonged, the self-chip removal effect is improved, vertical axial precision limiting is achieved by fixing the screw shaft shoulder, it is guaranteed that the main cutting edge and the auxiliary cutting edge are located on the same horizontal plane on the cutter holder, machining stability is guaranteed, and the design can effectively reduce cutter edge replacement cost and improve machining efficiency. And the tool apron is provided with a through chip groove, and the clearance angle of the blade is optimized, so that waste chips can be discharged more conveniently, and the grinding effect is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding electrode grinding, in particular to a combined welding electrode grinding tool. Background Art

[0002] In the field of automobile manufacturing, the surface of the electrode cap in the welding workshop will burn and form an oxide layer during use. Therefore, it is necessary to use grinding equipment to grind the electrode cap to restore its correct shape and clean state, thereby extending the life of the electrode; the grinding tool in the existing technology generally includes a tool holder and a blade. The blade can be single or multiple. The blade is installed in the tool holder and connected to the tool holder. The blade is provided with a cutting edge. The feature is located on the side of the blade close to the tool holder port. A chip removal port is left between adjacent blades in the tool holder. When the electrode cap is ground by the grinding tool, the electrode cap is placed in the cylinder so that the end of the electrode cap to be ground contacts the cutting edge of the blade. The grinding tool is driven to rotate by the grinder to achieve the grinding effect of the electrode cap.

[0003] Currently, most grinding tools on the market are cut-type grinding to remove the surface oxide layer, which has the following shortcomings:

[0004] 1. Chips are easily blocked during machining, causing edge breakage and reducing tool life;

[0005] 2. Poor chip removal results in unsatisfactory grinding results;

[0006] 3. There are design problems with the tool grinding process, which causes the grinding machine to swing severely during use, affecting the grinding effect and increasing the cost of tool blade replacement. Utility Model Content

[0007] The purpose of the utility model is to provide a combined welding electrode grinding tool to solve the technical problems raised in the background technology.

[0008] To achieve the above-mentioned purpose, the specific technical solution of the present invention is as follows: a combined welding electrode grinding tool, comprising a tool holder, a main cutting edge, a secondary cutting edge and a fixing screw; wherein,

[0009] The inner cavity of the tool holder is provided with two blade mounting holes penetrating the tool holder, and a main cutting edge and a secondary cutting edge are respectively installed in the two blade mounting holes, and the main cutting edge and the secondary cutting edge are fixedly connected to the tool holder by fixing screws, and a chip removal groove is provided on one side of the blade mounting hole in the tool holder;

[0010] The main cutting edge is a T-shaped structure, and the upper and lower side walls of the main cutting edge are both provided with a plurality of first cutting edges and a plurality of first chip breaking grooves;

[0011] The secondary cutting edge is a T-shaped structure, and the upper and lower side walls of the primary cutting edge are both provided with a plurality of second cutting edges and a plurality of second chip breaking grooves.

[0012] Preferably, the tool holder is a hexagonal prism structure.

[0013] Preferably, the two blade mounting holes are distributed asymmetrically.

[0014] Preferably, a fixing hole is provided on the inner side wall of the blade mounting hole, and a through hole connected to the fixing hole is provided on the tool holder, connecting holes are provided on the surfaces of the main cutting edge and the secondary cutting edge, a positioning hole with a diameter larger than the connecting hole is provided on the outside of the connecting hole, a thread is provided on the end surface of the fixing screw that is threadedly connected to the fixing hole, and a shoulder corresponding to the fixing hole is provided on one side of the thread on the fixing screw.

[0015] Preferably, an inner wall at one end of the blade mounting hole is provided with an inclined surface, and the fool-proof structure is distributed corresponding to the inclined surface.

[0016] Preferably, cutting edges are provided at both upper and lower ends of the tool holder.

[0017] The utility model has the following advantages:

[0018] The utility model greatly improves the service life of the grinding tool and enhances the self-chip removal effect. The vertical axial precision limit is achieved by fixing the screw shoulder to ensure that the main and secondary cutting edges are at the same level on the tool holder to ensure processing stability. This design can effectively reduce the cost of tool edge replacement. The tool holder is provided with a through chip removal groove and the optimization of the blade back angle makes it easier to discharge waste chips, thereby ensuring the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the blade mounting hole in the utility model;

[0022] Figure 3 for Figure 2 A top view of

[0023] Figure 4This is a schematic structural diagram of the main cutting edge in the present utility model;

[0024] Figure 5 for Figure 4 Right view;

[0025] Figure 6 for Figure 4 A top view of

[0026] Figure 7 This is a schematic structural diagram of the auxiliary cutting edge in the utility model;

[0027] Figure 8 for Figure 7 Right view;

[0028] Figure 9 for Figure 7 A top view of

[0029] Figure 10 This is a schematic diagram of the structure of the fixing screw in the utility model;

[0030] Figure 11 This is a schematic diagram of the structure of the cutting electrode cap for the grinding tool in the present invention;

[0031] Figure 12 for Figure 11 Side view of;

[0032] Figure 13 for Figure 11 sectional view of .

[0033] Explanation of the marks in the figure: 1. Tool holder; 2. Main cutting edge; 3. Secondary cutting edge; 4. Fixing screw; 5. Through hole; 6. Blade mounting hole; 7. Fixing hole; 8. Chip groove; 9. First chip breaker groove; 10. First cutting edge; 11. Connecting hole; 12. Positioning hole; 13. Anti-fouling structure; 14. Second chip breaker groove; 15. Second cutting edge; 16. Thread; 17. Shoulder; 18. Electrode cap. DETAILED DESCRIPTION

[0034] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0035] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 cannot be understood as a limitation on the embodiments of the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0037] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0038] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0039] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a combined welding electrode grinding tool of the present invention in conjunction with the accompanying drawings.

[0040] like Figure 1-13As shown, the utility model is a combined welding electrode grinding tool, including a tool holder 1, a main cutting edge 2, a secondary cutting edge 3 and a fixing screw 4. The tool holder 1 is a hexagonal prism structure, and the upper and lower ends of the tool holder 1 are symmetrically concave with inner cavities, which are hemispherical and used for grinding the electrode cap. The inner cavity of the tool holder 1 is provided with two blade mounting holes 6 that pass through the tool holder 1. The main cutting edge 2 and the secondary cutting edge 3 are respectively installed in the two blade mounting holes 6. The two blade mounting holes 6 are asymmetrically distributed, which plays a role in preventing mistakes when installing the blade. The main cutting edge 2 and the secondary cutting edge 3 are fixedly connected to the tool holder 1 by fixing screws 4. A chip groove 8 is provided on one side of the blade mounting hole 6 in the tool holder 1. The main cutting edge 2 is a T-shaped structure, and the upper and lower side walls of the main cutting edge 2 are provided with multiple first cutting edges 10 and multiple first chip breaking grooves 9. The first cutting edge 10 rotates to achieve main cutting and support of the end face and arc surface of the electrode cap 18. The first chip breaking groove 9 breaks the waste chips in the cutting process and guides them to the chip groove 8 of the tool holder 1. The secondary cutting edge 3 is a T-shaped structure, and the upper and lower side walls of the main cutting edge 2 are provided with multiple second cutting edges 15 and multiple second chip breaking grooves 14. The second cutting edge 15 rotates to achieve secondary cutting and support of the cross section and arc surface of the electrode cap 18. The second chip breaking groove 14 breaks the waste chips in the cutting process and guides them to the chip groove 8 of the tool holder 1, and the ends of the main cutting edge 2 and the secondary cutting edge 3 are provided with anti-fool structures 13.

[0041] A fixing hole 7 is provided on the inner wall of the blade mounting hole 6, and a through hole 5 connected to the fixing hole 7 is provided on the tool holder 1. The surfaces of the main cutting edge 2 and the secondary cutting edge 3 are both provided with a connecting hole 11. The outer side of the connecting hole 11 is provided with a positioning hole 12 with a diameter larger than the connecting hole 11. The end surface of the fixing screw 4 is provided with a thread 16 threadedly connected to the fixing hole 7. A shoulder 17 corresponding to the fixing hole 7 is provided on the side of the thread 16 of the fixing screw 4. The setting of the through hole 5 facilitates the installation of the fixing screw 4. The main and secondary cutting edge blades are connected to the tool holder 1 through the fixing screw 4. The main and secondary cutting edge blades are in the tool holder 1, and the axial limitation is realized by the fixing screw 4. The radial limitation is realized by the blade mounting hole 6. The main and secondary cutting edge blades are axially limited in the tool holder 1 by the shoulder 17. The inner wall of one end of the blade mounting hole 6 is provided with a bevel, and the anti-fool structure 13 is distributed corresponding to the bevel. The bevel on the blade mounting hole 6 cooperates with the anti-fool structure 13 on the primary and secondary cutting edge blades to play an anti-fool installation role. Cutting edges are provided at the upper and lower ends of the tool holder 1 to facilitate the simultaneous operation of the same group of upper and lower corresponding electrodes; in addition, it should be noted that the perforation 5 is connected to the chip groove 8, that is, the waste chips can be discharged by guiding the external high-altitude airflow from the position of the perforation 5 into the chip groove 8 to the inner cavity, and blowing air from the inner cavity.

[0042] The working principle of this combined welding electrode grinding tool is as follows: the main cutting edge 2 and the secondary cutting edge 3 are fixed to the tool holder 1 by two fixing screws 4 to form a combined tool, and the main and secondary cutting edges are both single-sided sharpened to increase the tool back angle. On the one hand, it increases the sharpness of the blade cutting, and on the other hand, it can guide the generated waste chips and can match different cutting thicknesses under different cutting conditions. The chip removal density and chip removal effect are good, and a relatively rich chip removal groove is left between the main and secondary cutting edges. The chip removal groove can quickly remove the waste chips generated during the cutting process without affecting the overall strength of the tool holder; the main and secondary cutting edges are matched with the tool holder body through a large gap, and the vertical axial precision limit is achieved by the fixing screw 4 shoulder 17 to ensure that the main and secondary cutting edges are at the same level in the tool holder, and the main and secondary cutting edges are horizontally and radially precision limited by the blade mounting hole 6, and the elliptical shoulder countersink of the tool holder 1 is used to reduce the influence of machining errors on installation.

[0043] The above design can realize the assembly of the combined welding electrode grinding tool, which can improve the strength and accuracy of the grinding process on the one hand, and make it more convenient to replace the blade of the combined welding electrode grinding tool on the other hand.

[0044] When grinding the electrode, align the electrode with the axial direction of the combined welding electrode grinding tool, and the rotating primary and secondary cutting edges grind off the oxidized and contaminated parts of the electrode cap 18. The grinding process is to cut and grind by rotating the primary and secondary cutting edges, so that the electrode can maintain its original shape well. At the same time, the ground area can be smoother, and the waste chips ground off are discharged from the chip groove, so that the work can be carried out more smoothly.

[0045] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A combined welding electrode grinding tool, characterized by: It comprises a tool holder (1), a main cutting edge (2), a secondary cutting edge (3) and a fixing screw (4); wherein, The inner cavity of the tool holder (1) is provided with two blade mounting holes (6) penetrating the tool holder (1), and a main cutting edge (2) and a secondary cutting edge (3) are respectively installed in the two blade mounting holes (6), and the main cutting edge (2) and the secondary cutting edge (3) are fixedly connected to the tool holder (1) by fixing screws (4), and a chip removal groove (8) is provided on one side of the blade mounting hole (6) in the tool holder (1); The main cutting edge (2) is a T-shaped structure, and the upper and lower side walls of the main cutting edge (2) are both provided with a plurality of first cutting edges (10) and a plurality of first chip breaking grooves (9); The secondary cutting edge (3) is a T-shaped structure, and the upper and lower side walls of the primary cutting edge (2) are both provided with a plurality of second cutting edges (15) and a plurality of second chip breaking grooves (14).

2. The combined welding electrode grinding tool according to claim 1, characterized in that: The knife seat (1) is a hexagonal prism structure.

3. The combined welding electrode grinding tool according to claim 1, characterized in that: The two blade mounting holes (6) are distributed in an asymmetrical manner.

4. The combined welding electrode grinding tool according to claim 1, characterized in that: The inner wall of the blade mounting hole (6) is provided with a fixing hole (7), and the blade seat (1) is provided with a through hole (5) connected to the fixing hole (7), the surfaces of the main cutting edge (2) and the secondary cutting edge (3) are both provided with a connecting hole (11), the outer side of the connecting hole (11) is provided with a positioning hole (12) with a diameter larger than the connecting hole (11), the end surface of the fixing screw (4) is provided with a thread (16) threadedly connected to the fixing hole (7), and the fixing screw (4) is provided with a shoulder (17) distributed corresponding to the fixing hole (7) on one side of the thread (16).

5. The combined welding electrode grinding tool according to claim 1, characterized in that: The upper and lower ends of the knife seat (1) are both provided with cutting edges.

Images