Large-specification material turning cutting tool

Abstract

The utility model provides a large-specification material turning cutting tool. The large-specification material turning cutting tool comprises a tool handle, tool rests and a blade which are sequentially connected, the tool handle is of a T-shaped structure, the blade is of a long-strip-shaped structure, and the two ends of the head of the tool handle are connected with the two ends of the blade through the tool rests respectively. The large-size material turning-off tool overcomes the defects that an existing turning-off tool is large in contact area, cuttings are not prone to breakage, universality is insufficient, and large-size-diameter bars cannot be turned off.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe tool field, concretely relates to a big specification material car broken tool. BACKGROUND

[0002] In the machining process, the car broken operation is a common process to separate the workpiece from the raw material. The traditional car broken tool usually uses a hard alloy blade, and the machining tool in the plastic processing industry generally uses the tool for metal processing. However, there is no corresponding car broken tool for machining large specification pipes and rods. For example: due to the length of the car broken tool, the general car broken tool can only process products with a diameter of 60 mm or less. The front end of the ordinary car broken tool is generally linear, and the length is only 30 mm, so it is difficult to operate the car broken operation on the lathe for materials with a diameter greater than 60 mm. Only by sawing can the cut surface be machined.

[0003] If the length of the car broken tool is increased, the length of the cutting edge is extended, and due to the rotation and vibration of the material during use, the capacity causes damage to the tool, and the cutting edge will break. In addition, during the car broken operation, the tool is long and narrow, the strength is low, it is easy to shake, the car broken surface will be rough, the smoothness is not high, and there are serious tool marks. The longer the horizontal linear tool, the greater the influence of the structure, the material rotates with the clamp, and the downward force is applied to the tool. The greater the moment of the tool during the machining process, the easier it is to break or shake.

[0004] In addition, the traditional car broken tool also has the following disadvantages: the contact area between the blade and the workpiece is large, which causes large cutting resistance, affects the machining efficiency and tool life; the chip is not easy to break, and is easy to wrap around the tool or workpiece, which affects the machining quality and safety; the traditional tool is designed for specific materials and machining conditions, and has poor universality, and large size diameter rods cannot be car broken.

[0005] There is a patent with publication number CN216912108U and the name of a T-shaped cutting tool special for large roller rings, which proposes to support the side surface of the car broken tool to reduce vibration and allow machining for large roller rings. However, it is still based on the traditional tool structure, and does not change the defects of large contact area, difficult chip breaking, and poor universality. UTILITY MODEL CONTENT

[0006] To solve the defects of the existing car broken tool, such as large contact area, difficult chip breaking, poor universality, and large size diameter rods cannot be car broken, the utility model provides a big specification material car broken tool to solve the above problems.

[0007] A large-scale material cutting-off cutter comprises a handle, a holder and a blade connected in sequence, the handle is in T-shaped structure, the blade is in strip-shaped structure, and the handle head is connected with the blade through the holder.

[0008] In a preferred embodiment of the large-scale material cutting-off cutter, the blade and the handle head are parallel to each other, and the blade, the holder and the handle form an isosceles trapezoidal structure or a rectangular structure.

[0009] In a preferred embodiment of the large-scale material cutting-off cutter, the blade is in strip-shaped structure, and the middle plane of the blade is aligned with the middle plane of the isosceles trapezoidal structure.

[0010] In a preferred embodiment of the large-scale material cutting-off cutter, the middle part of the blade is provided with a blade edge away from the handle.

[0011] The blade edge is in right-angled triangular strip-shaped structure, the middle plane of the blade edge is aligned with the middle plane of the blade, and the right-angled side of the blade edge is connected with the blade.

[0012] In a preferred embodiment of the large-scale material cutting-off cutter, the handle head, the holder and the blade are all provided with connecting nodes, and the blade, the holder and the handle are detachably connected.

[0013] The handle head is halved in thickness, and is provided with mounting holes at both ends, one end of the holder is halved in thickness and is provided with a mounting hole for bolt connection with the handle head, the other end is slotted and is provided with a mounting hole penetrating the slot for bolt connection with the blade, and the blade is provided with mounting holes at both ends and is equal to or less than the slotted thickness of the holder in thickness.

[0014] Compared with the prior art, the large-scale material cutting-off cutter has the following beneficial effects:

[0015] 1. In the scheme provided by the utility model, the Y-shaped holder supports both ends of the blade, so that the blade can be designed in vertical state, the strength in the stress direction is higher, and the cutting-off process is more stable.

[0016] 2. In the scheme provided by the utility model, the Y-shaped holder makes the opening larger, so that large-size product machining is satisfied.

[0017] 3. The blade is narrower than the cutting edge in the scheme of the utility model, the blade will not have friction contact to the processed object during processing, the processing surface is better protected, and the processing resistance is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the front view of the large-specification material turning-off cutter;

[0019] Figure 2 is the isometric view of the large-specification material turning-off cutter.

[0020] The reference signs in the drawing are: tool holder 1, tool rest 2, blade 3, bolt 4, cutting edge 5. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0022] Please refer to Figure 1 and Figure 2 at the same time, which are respectively the front view and the isometric view of the large-specification material turning-off cutter provided by the utility model.

[0023] The large-specification material turning-off cutter comprises a tool holder 1, a tool rest 2, a blade 3 and a cutting edge 5.

[0024] The tool holder 1 is of T-shaped structure, the right end is a tail part used for being installed on a lathe, and the left end is a head part with a thickness halved and provided with a threaded mounting hole at each end.

[0025] The tool rest 2 is of square strip-shaped structure, the right end is halved in thickness and provided with a countersunk screw hole, used for being connected with one mounting hole of the tool holder 1 through a bolt 4; the left end is provided with a slot at the middle position and a mounting hole penetrating through the slot. The slot is used for inserting the blade 3, and the mounting hole at one end of the slot is a countersunk hole and the other end is a threaded hole, used for being connected with the blade 3 through the bolt 4.

[0026] The blade 3 is of long-strip-shaped sheet structure, the thickness is consistent with the slot at the left end of the tool rest 2, and the two ends are provided with mounting holes, inserted into the slot of the tool rest 2 and connected through the bolt 4.

[0027] The cutting edge 5 is of right-angled triangular sheet structure, the thickness is greater than that of the blade 3, and the two surfaces of the cutting edge 5 both exceed the blade 3. One side of the right-angled edge of the cutting edge 5 is connected with the blade 3, and the two are of integral structure. The middle plane of the cutting edge 5 is aligned with the middle plane of the blade 3.

[0028] The head part of the tool holder 1, the two tool rests 2 and the blade 3 jointly form an isosceles trapezoidal structure, and the middle planes of the blade 3 and the cutting edge 5 are all aligned with the middle plane of the whole.

[0029] In use, different blades 3 are replaced according to the size of the profile to be processed, the length of the blade 3 should be greater than the diameter of the profile to be processed. The control of the handle 1 moves to the direction of the cutting edge 5, cuts into the radial direction of the profile to be processed, makes the cutting edge 5 contact with the profile, and realizes cutting.

[0030] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A large-size material turning tool, comprising a tool holder, a tool post, and a cutting insert connected in sequence, characterized in that: The handle is T-shaped, the blade is long and narrow, and the two ends of the handle and the two ends of the blade are connected by a blade holder.

2. The large-size material cutting tool according to claim 1, characterized in that: The blade and the head of the handle are parallel to each other, and the blade, the handle, and the handle form an isosceles trapezoidal or rectangular structure.

3. The large-size material cutting tool according to claim 2, characterized in that: The blade is a long, strip-shaped structure, and the middle plane of the blade is aligned with the middle plane of the isosceles trapezoidal structure.

4. The large-size material cutting tool according to claim 3, characterized in that: The blade has a cutting edge on the side of its center away from the handle.

5. The large-size material cutting tool according to claim 4, characterized in that: The cutting edge is a right-angled triangular sheet structure, the middle plane of the cutting edge is aligned with the middle plane of the blade, and the right-angled side of the cutting edge is connected to the blade.

6. The large-size material cutting tool according to claim 5, characterized in that: The thickness of the cutting edge is greater than the thickness of the blade, and the two sides of the cutting edge extend beyond the two sides of the blade.

7. The large-size material cutting tool according to any one of claims 1 to 6, characterized in that: The head of the handle, the two ends of the tool holder, and the two ends of the blade are all provided with connection nodes, and the blade, the tool holder, and the handle support are all detachably connected.

8. The large-size material cutting tool according to claim 7, characterized in that: The head of the handle is halved in thickness and has mounting holes at both ends. One end of the tool holder is halved in thickness and has mounting holes for bolting to the head of the handle. The other end is slotted and has mounting holes that pass through the slot for bolting to the blade. The blade has mounting holes at both ends and its thickness is less than or equal to the slotted thickness of the tool holder.

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