Special chip breaker groove cutter for automobile variable pump

Abstract

The utility model discloses a special chip breaker groove cutter for an automobile variable pump, which comprises a hard alloy base body, a notch arranged on the hard alloy base body, a composite sheet arranged on the notch, and a limiting part arranged on the hard alloy base body and the composite sheet, and the limiting part comprises a limiting block arranged at the bottom of the composite sheet. The limiting groove is formed in the hard alloy base body and is used for inserting the limiting block; the limiting block and the composite sheet are of an integrated structure, and one half of the limiting block is inserted into the limiting groove; the baffle strip is arranged at the notch of the limiting groove and can be propped against the side surface of the limiting block; the distance between the bottom end of the barrier strip and the bottom of the limiting groove is one third of the height of the barrier strip; the utility model has the beneficial effects that through the designed limiting part, the limiting block is matched with the limiting groove, so that the limitation during the splicing of the composite sheet and the hard alloy base body is increased, and the splicing efficiency of the composite sheet and the hard alloy base body is favorably improved; and the cutting performance is improved by utilizing a head chip breaker groove on the composite sheet.

Description

Technical Field

[0001] The utility model belongs to the technical field of chip-breaking groove tools, and particularly relates to a special chip-breaking groove tool for automotive variable pumps. Background Technique

[0002] The chip-breaking groove on the blade refers to those strange patterns on the rake face of the blade, and these strange patterns can break the chips, guide the chip path, and form a specific chip shape; when designing the chip-breaking groove, it is necessary to consider reducing the contact area between the rake face and the chip, and reducing the cutting heat transferred to the blade during cutting; by forming a specific angle on the rake face of the blade and combining it with the angle set on the tool shank, a suitable cutting angle can be formed.

[0003] The design of the chip-breaking groove plays an important role in the cutting performance of the blade, and it has different effects on the three basic elements during cutting: cutting heat, cutting force, and chip formation.

[0004] A cubic boron nitride tool with a chip-breaking groove disclosed in the patent with the publication number of CN113787204A includes a cemented carbide substrate and a cubic boron nitride composite sheet; the cubic boron nitride composite sheet is fixed in the installation groove of the cemented carbide substrate; at the corresponding corner position, the intersection of the upper surface and the side surface of the cubic boron nitride composite sheet forms a cutting edge; a chip-breaking groove is provided inward of the cutting edge; the chip-breaking groove is lower than the rake face, and the chip-breaking groove is sequentially provided with a chamfered area, a first-order ramp chip-breaking platform, and a second-order ramp chip-breaking platform from the cutting edge to the rake face direction, and the chamfered area, the first-order ramp chip-breaking platform, and the second-order ramp chip-breaking platform are all symmetric structures with respect to the angular bisector of the corner of the cubic boron nitride composite sheet.

[0005] During the installation of the composite sheet, it is not conducive to limit the position, which is likely to cause position deviation and increase the complexity of installation. Content of the Utility Model

[0006] The purpose of the utility model is to provide a special chip-breaking groove tool for automotive variable pumps, which helps to realize the disassembly and assembly of the composite sheet.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A special chip-breaking groove tool for automotive variable pumps, including a cemented carbide substrate, a notch opened on the cemented carbide substrate, a composite sheet installed on the notch, and a limiting component arranged on the cemented carbide substrate and the composite sheet. The limiting component includes a limiting block arranged at the bottom of the composite sheet and a limiting groove opened on the cemented carbide substrate for the limiting block to insert.

[0008] Preferably, the limiting block and the composite sheet are of an integral structure, and half of the limiting block is inserted into the limiting groove.

[0009] Preferably, it further includes a retaining strip disposed at the notch of the limiting groove, and the retaining strip can abut against the side surface of the limiting block.

[0010] Preferably, the distance between the bottom end of the retaining strip and the bottom of the limiting groove is one-third of the height of the retaining strip.

[0011] Preferably, it further includes a head chip breaker groove formed on the composite sheet.

[0012] Preferably, it further includes two grooves formed on the composite sheet, and expansion screws are screwed into the interior of the cemented carbide substrate through the grooves.

[0013] Preferably, it further includes a fixing hole formed in the middle of the cemented carbide substrate, and the fixing hole is circular.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] Through the designed limiting components, by using the cooperation of the limiting block and the limiting groove, the limitation during the splicing of the composite sheet and the cemented carbide substrate is increased, which helps to improve the splicing efficiency of the composite sheet and the cemented carbide substrate; the cutting performance is improved by using the head chip breaker groove on the composite sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is of the present utility model Figure 1 the enlarged structural diagram of area B in;

[0018] Figure 3 is a partial sectional structural diagram of the splicing of the present utility model;

[0019] In the figure: 1, cemented carbide substrate; 11, fixing hole; 12, notch; 13, limiting groove; 2, composite sheet; 21, limiting block; 22, groove; 23, head chip breaker groove; 3, retaining strip; 4, expansion screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment 1

[0022] Please refer to Figures 1 - 3, which is the first embodiment of the present utility model. This embodiment provides a chip-breaking groove tool dedicated to automotive variable pumps, including a cemented carbide substrate 1, which helps to increase the strength of the tool, a notch 12 opened on the cemented carbide substrate 1 to realize the opening of the notch 12, a composite sheet 2 installed on the notch 12 to realize the addition of the composite sheet 2, and a limiting component provided on the cemented carbide substrate 1 and the composite sheet 2. This limiting component includes a limiting block 21 provided at the bottom of the composite sheet 2 to realize the addition of the limiting block 21, and a limiting groove 13 opened on the cemented carbide substrate 1 for the limiting block 21 to insert. By using the cooperation of the limiting block 21 and the limiting groove 13, the limitation when the composite sheet 2 and the cemented carbide substrate 1 are spliced is increased.

[0023] In this embodiment, preferably, the limiting block 21 and the composite sheet 2 are of an integral structure, which helps to increase the strength of the limiting block 21 and the composite sheet 2, and half of the limiting block 21 is inserted into the limiting groove 13 to further limit the spliced composite sheet 2.

[0024] In this embodiment, preferably, it further includes a head chip-breaking groove 23 opened on the composite sheet 2 to improve the cutting performance.

[0025] In this embodiment, preferably, it further includes two grooves 22 opened on the composite sheet 2 to realize the opening of the grooves 22, and expansion screws 4 screwed into the interior of the cemented carbide substrate 1 through the grooves 22. The expansion screws 4 are used to increase the stability of the splicing of the composite sheet 2 and the cemented carbide substrate 1, and it is also convenient to disassemble and replace when the surface of the composite sheet 2 is worn.

[0026] In this embodiment, preferably, it further includes a fixing hole 11 opened in the middle of the cemented carbide substrate 1 to realize the opening of the fixing hole 11. By using the cooperation of the fixing hole 11 and the screw, it helps to install the cemented carbide substrate 1 on the tool handle, and the fixing hole 11 is circular.

[0027] Embodiment 2

[0028] Please refer to Figures 1 - 3 , which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment, and the difference is:

[0029] It further includes a retaining strip 3 provided at the notch of the limiting groove 13 to realize the addition of the retaining strip 3, and the retaining strip 3 can abut against the side surface of the limiting block 21. By using the cooperation of the retaining strip 3, the limiting block 21 is strengthened while being inserted into the limiting groove 13; the distance between the bottom end of the retaining strip 3 and the bottom of the limiting groove 13 is one-third of the height of the retaining strip 3, which increases the convenience of the limiting block 21 being inserted into the limiting groove 13 along the retaining strip 3.

[0030] Working principle and usage process of the present utility model: During use, the cemented carbide substrate 1 is installed on the tool shank by means of the cooperation between the fixing holes 11 and screws. The limiting block 21 is inserted into the limiting groove 13 along the retaining bar 3, and the expansion screw 4 is used to enhance the stability of the splicing between the composite sheet 2 and the cemented carbide substrate 1. The cutting performance is improved by means of the head chip breaker groove 23 on the composite sheet 2.

[0031] Although the embodiments of the present utility model have been shown and described, see the above detailed description. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. Chip-breaking groove tool dedicated to automotive variable pumps, characterized in that: It includes a cemented carbide substrate (1), a notch (12) formed on the cemented carbide substrate (1), a composite sheet (2) installed on the notch (12), and a limiting component provided on the cemented carbide substrate (1) and the composite sheet (2). The limiting component includes a limiting block (21) provided at the bottom of the composite sheet (2), and a limiting groove (13) formed on the cemented carbide substrate (1) for the limiting block (21) to insert into.

2. The special chip-breaking groove tool for automotive variable pumps according to claim 1, characterized in that: The limiting block (21) and the composite sheet (2) are of an integral structure, and half of the limiting block (21) is inserted into the limiting groove (13).

3. The special chip breaker tool for automotive variable pumps according to claim 1, characterized in that: It further includes a retaining strip (3) provided at the notch of the limiting groove (13), and the retaining strip (3) can abut against the side surface of the limiting block (21).

4. The special chip breaker tool for automotive variable pumps according to claim 3, characterized in that: The distance between the bottom end of the retaining strip (3) and the bottom of the limiting groove (13) is one-third of the height of the retaining strip (3).

5. The special chip breaker tool for automotive variable pumps according to claim 1, wherein: It further includes a head chip breaker groove (23) formed on the composite sheet (2).

6. The special chip-breaking groove tool for automotive variable pumps according to claim 1, wherein: It further includes two grooves (22) formed on the composite sheet (2), and expansion screws (4) screwed into the interior of the cemented carbide substrate (1) through the grooves (22).

7. The chip breaker groove tool for the automotive variable pump according to claim 1, wherein: It further includes a fixing hole (11) formed in the middle of the cemented carbide substrate (1), and the fixing hole (11) is circular.

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