Hard alloy double-end milling cutter

Abstract

The utility model relates to the technical field of milling cutters, and discloses a hard alloy double-end milling cutter which comprises a cutter body, two ends of the cutter body are respectively provided with a cutter head, one end of each cutter head is symmetrically provided with two positioning ports, two ends of the cutter body are respectively provided with a positioning port, and each end of the cutter body is symmetrically provided with two positioning ports. Four connecting components are arranged between every two adjacent positioning openings, and the connecting components are used for connecting and fixing the cutter body and the cutter head. According to the design, the defects in the prior art are overcome, when the tool bit is abraded, a worker can retain the tool body part and replace the tool bit, compared with an existing integrally-formed design, waste of materials is avoided, and in addition, when the tool bit is installed, the tool bit is not prone to being damaged. A worker can connect and fix the tool body and the tool bit through the connecting component by pulling the shifting block with a hand, the tool bit is easy and rapid to mount and dismount, and great convenience is brought to the worker.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, and more specifically to a cemented carbide double-head milling cutter. Background Art

[0002] A milling cutter is a rotating tool with one or more teeth used for milling. Each tooth sequentially and intermittently removes the workpiece's excess material. Milling cutters are primarily used on milling machines to create flat surfaces, steps, grooves, formed surfaces, and cut-off parts.

[0003] The shortcomings of the existing technology: Under the existing technology, the double-head milling cutter consists of two parts: the cutter head and the blade body. The existing cutter head and the blade body are usually designed as an integrated molding. When the cutter head is worn, the cutter head and the blade body are scrapped as a whole and can no longer be used, resulting in material waste, increased use costs, and a lot of inconvenience to the staff. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a cemented carbide double-ended milling cutter to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a carbide double-head milling cutter, comprising a blade body, a blade head mounted at each end of the blade body, two symmetrical positioning openings at one end of the blade head, positioning openings at both ends of the blade body, and two symmetrical positioning openings at each end of the blade body, a connecting member provided between two adjacent positioning openings, four connecting members provided, and the connecting member being used to connect and fix the blade body and the blade head.

[0006] Preferably, the connecting member includes a connecting block, an extension groove is opened inside the connecting block, a fixing bar is fixedly connected to the center of the extension groove, a group of guide rods are provided at the top and bottom of the fixing bar, and a moving bar is provided at the top and bottom of the fixing bar, one end of the guide rod is fixedly connected to the fixing bar, and the other end of the guide rod is fixedly connected to the wall of the extension groove, and the moving bar is sleeved on the surface of the guide rod.

[0007] Preferably, the moving bar is fixedly connected to a docking block on the side facing away from the fixed bar, and each of the moving bars is provided with two docking blocks, the docking block passes through the extension groove wall and extends outward from the connecting block, a closing plate is fixedly connected at the notch of the extension groove, a toggle block is fixedly connected at the center of the moving bar, a through hole is provided on the closing plate, and two through holes are symmetrically provided on each of the closing plates, and the toggle block is located in the through hole.

[0008] Preferably, a compression spring is sleeved on the surface of the guide rod, one end of the compression spring is fixedly connected to the side of the moving bar facing the fixed bar, and the other end of the compression spring is fixedly connected to the fixed bar.

[0009] Preferably, a docking groove is respectively provided at the top and the bottom of the positioning opening, and the docking groove matches the docking block.

[0010] Preferably, both ends of the blade body are fixedly connected with a cross piece, one end of the blade head is provided with a cross slot, and the cross piece matches the cross slot.

[0011] The technical effects and advantages of this utility model are:

[0012] The two guide rails are moved in a direction that is close to each other, and the two moving bars move synchronously along the guide rod in the direction that is close to each other, and the compression spring contracts under the squeezing of the moving bar and the fixed bar, and the moving bar moves and drives the docking block to retract into the extension groove, and the staff inserts the connecting member as a whole into the two adjacent positioning holes, and then releases the toggle block, and the elastic force of the compression spring drives the docking block into the docking groove, and the docking block and the docking groove cooperate with each other to connect and fix the blade body and the blade head. This design solves the shortcomings of the existing technology. When the blade head is worn, the staff can retain the blade body part and replace the blade head. Compared with the existing one-piece molding design, it avoids waste of material. In addition, when installing the blade head, the staff can realize the connection and fixation between the blade body and the blade head by the connecting member by manually depressing the toggle block. The installation and disassembly of the blade head are simple and fast, which brings great convenience to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is an exploded view of the overall structure of the utility model.

[0015] Figure 3 This is a schematic diagram of the cutter head structure of the present utility model.

[0016] Figure 4 This is a schematic diagram of the blade structure of the present utility model.

[0017] Figure 5 This is a schematic diagram of the connecting component structure of the present utility model.

[0018] Figure 6 This is a schematic diagram of the internal structure of the connecting block of the present invention.

[0019] The accompanying drawings are marked as follows: 1. blade body; 11. cross piece; 2. blade head; 21. cross slot; 3. connecting member; 31. connecting block; 311. extension slot; 32. fixing bar; 33. moving bar; 34. guide rod; 35. docking block; 36. compression spring; 37. toggle block; 38. closing plate; 381. through hole; 4. positioning port; 41. docking slot. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The carbide double-headed milling cutter involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] The utility model provides a carbide double-ended milling cutter, comprising a blade body 1, with a blade head 2 installed at each end of the blade body 1, the blade body 1 and the blade head 2 are both made of carbide material, one end of the blade head 2 is symmetrically provided with two positioning openings 4, both ends of the blade body 1 are provided with positioning openings 4, and each end of the blade body 1 is symmetrically provided with two positioning openings 4, a connecting member 3 is provided between two adjacent positioning openings 4, four connecting members 3 are provided, and the connecting member 3 is used to connect and fix the blade body 1 and the blade head 2.

[0022] Furthermore, the connecting member 3 includes a connecting block 31, an extension groove 311 is opened inside the connecting block 31, a fixing bar 32 is fixedly connected to the center of the extension groove 311, a group of guide rods 34 are provided at the top and bottom of the fixing bar 32, and a moving bar 33 is provided at the top and bottom of the fixing bar 32, one end of the guide rod 34 is fixedly connected to the fixing bar 32, and the other end of the guide rod 34 is fixedly connected to the wall of the extension groove 311, the moving bar 33 is sleeved on the surface of the guide rod 34, and the moving bar 33 and the guide rod 34 form a sliding guide fit along the axial direction of the guide rod 34.

[0023] Furthermore, the moving bar 33 is fixedly connected to a docking block 35 on the side facing away from the fixed bar 32, and each moving bar 33 is provided with two docking blocks 35, the docking block 35 passes through the wall of the extension groove 311 and extends outward from the connecting block 31, and a closing plate 38 is fixedly connected to the notch of the extension groove 311, and a toggle block 37 is fixedly connected to the center of the moving bar 33, a through hole 381 is provided on the closing plate 38, and two through holes 381 are symmetrically provided on each closing plate 38, and the toggle block 37 is located in the through hole 381. The staff can pull the moving bar 33 to move by manually depressing the toggle block 37, which is simple and convenient to operate.

[0024] Furthermore, a compression spring 36 is sleeved on the surface of the guide rod 34, one end of the compression spring 36 is fixedly connected to the side of the moving bar 33 facing the fixed bar 32, and the other end of the compression spring 36 is fixedly connected to the fixed bar 32. A docking groove 41 is respectively provided at the top and bottom of the positioning port 4, and the docking groove 41 matches the docking block 35. The elastic force of the compression spring 36 can drive the docking block 35 into the docking groove 41, and the docking block 35 and the docking groove 41 cooperate with each other to connect and fix the blade body 1 and the blade head 2.

[0025] Furthermore, a cross piece 11 is fixedly connected to both ends of the blade body 1, and a cross slot 21 is opened at one end of the blade head 2. The cross piece 11 matches the cross slot 21. The cross piece 11 and the cross slot 21 cooperate with each other to achieve a quick positioning effect, and also ensure the stability of the connection between the blade body 1 and the blade head 2.

[0026] The working principle of the present utility model is as follows: during actual work, the staff inserts the cross piece 11 on the blade body 1 into the cross slot 21 on the cutter head 2. At this time, the positioning port 4 on the cutter head 2 and the positioning port 4 on the blade body 1 are spliced ​​together. The staff manually detents the two toggle blocks 37 of the connecting member 3 and moves them along the through holes 381 toward each other, so that the two moving bars 33 move synchronously along the guide rod 34 toward each other. The compression spring 36 contracts under the extrusion of the moving bar 33 and the fixed bar 32. The elastic force of the compression spring 36 increases, and the moving bar 33 moves and drives the docking block 35 to retract into the extension groove 311. At this time, the staff inserts the connecting member 3 as a whole into the two adjacent positioning ports 4, and then releases the toggle block 37. The elastic force of the compression spring 36 drives the docking block 35 into the docking groove 41. The docking block 35 cooperates with the docking groove 41 to connect and fix the blade body 1 and the cutter head 2.

[0027] When the cutter head 2 needs to be replaced, similarly, the staff will take out the connecting member 3 from the two adjacent positioning openings 4, release the connection and fixation between the blade body 1 and the cutter head 2, and then the cutter head 2 can be replaced.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0029] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0030] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cemented carbide double-ended milling cutter, comprising a blade (1), characterized in that: A blade head (2) is installed at each end of the blade body (1), and two positioning openings (4) are symmetrically provided at one end of the blade head (2). Positioning openings (4) are provided at both ends of the blade body (1), and two positioning openings (4) are symmetrically provided at each end of the blade body (1). A connecting member (3) is provided between two adjacent positioning openings (4), and four connecting members (3) are provided. The connecting member (3) is used to connect and fix the blade body (1) and the blade head (2).

2. A cemented carbide double-ended milling cutter according to claim 1, characterized in that: The connecting member (3) comprises a connecting block (31), an extension groove (311) is provided inside the connecting block (31), a fixing bar (32) is fixedly connected at the center of the extension groove (311), a group of guide rods (34) are provided at the top and bottom of the fixing bar (32), a moving bar (33) is provided at the top and bottom of the fixing bar (32), one end of the guide rod (34) is fixedly connected to the fixing bar (32), and the other end of the guide rod (34) is fixedly connected to the wall of the extension groove (311), and the moving bar (33) is sleeved on the surface of the guide rod (34).

3. A cemented carbide double-ended milling cutter according to claim 2, characterized in that: A docking block (35) is fixedly connected to the side of the moving bar (33) facing away from the fixed bar (32), and two docking blocks (35) are provided on each of the moving bars (33). The docking blocks (35) pass through the wall of the extension groove (311) and extend outward from the connecting block (31). A closing plate (38) is fixedly connected to the notch of the extension groove (311). A toggle block (37) is fixedly connected to the center of the moving bar (33). A through hole (381) is provided on the closing plate (38), and two through holes (381) are symmetrically provided on each of the closing plates (38). The toggle block (37) is located in the through hole (381).

4. A cemented carbide double-ended milling cutter according to claim 2, characterized in that: A compression spring (36) is sleeved on the surface of the guide rod (34), one end of the compression spring (36) is fixedly connected to the side of the moving bar (33) facing the fixed bar (32), and the other end of the compression spring (36) is fixedly connected to the fixed bar (32).

5. The cemented carbide double-ended milling cutter according to claim 1, characterized in that: A docking groove (41) is respectively provided at the top and the bottom of the positioning opening (4), and the docking groove (41) matches the docking block (35).

6. The cemented carbide double-ended milling cutter according to claim 1, characterized in that: Both ends of the blade body (1) are fixedly connected with a cross piece (11), one end of the blade head (2) is provided with a cross slot (21), and the cross piece (11) matches the cross slot (21).

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