Vertical lathe clamp for detecting polycrystalline diamond compact

Abstract

The utility model belongs to the field of detection and application of superhard composite materials, and particularly relates to a vertical lathe fixture for detecting polycrystalline diamond compacts, which comprises a fixture base fixedly connected with a vertical lathe cantilever and provided with an accommodating groove for accommodating the polycrystalline diamond compacts. A water path is arranged in the clamp base body, one end of the water path is communicated with the containing groove to form an outlet, the other end of the water path is provided with an inlet in the outer surface of the clamp base body, the inlet is used for being connected with an external water path, and the water path is directly arranged in the clamp base body and communicated with the containing groove. The cooling water directly acts on the clad sheet and is high in flow speed, the cooling efficiency is greatly improved, and the consumption of the cooling water is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of superhard composite material detection and application, and specifically relates to a vertical lathe clamp for detecting polycrystalline diamond composite sheets. Background Art

[0002] Polycrystalline diamond composite sheet is made by sintering high-quality diamond and cemented carbide matrix through high temperature and high pressure process. It takes into account the high hardness and wear resistance of diamond and the high impact resistance of cemented carbide. Its excellent comprehensive performance is considered to be an ideal drilling material. With the sharp increase in drilling depth, super-hard land blocks continue to emerge and require high-performance polycrystalline diamond composite sheets to cope with complex drilling environments.

[0003] The performance of polycrystalline diamond composite sheets is divided into wear resistance, impact resistance, thermal stability and other properties; among which wear resistance is mostly tested by vertical lathe. The applicant has conducted research on this and developed a positioning fixture technology, and formed a patent CN201620769902.6. The fixture is fixed to the vertical lathe at one end and the polycrystalline diamond composite sheet is fixed at the other end. By continuously rubbing the polycrystalline diamond composite sheet, its wear resistance is observed. In this process, the grinding area needs to be flushed, on the one hand to flush the rock chips, and on the other hand to cool it; the method of the prior art is that cooling water impacts the gap between the fixture and the rock grinding block through an external water pipe. Due to the spacing, when the cooling water acts on the composite sheet, the water flow speed is low and the water volume is small, resulting in low cooling efficiency. The low efficiency of flushing rock chips affects the accuracy of the test results; therefore, in order to ensure the flushing efficiency, at least water flow impact cooling is required in the front, left and right directions at the same time, or even 5 water pipes are flushed at the same time, which consumes a lot of water. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a vertical lathe fixture for detecting polycrystalline diamond composite sheets.

[0005] The purpose of the utility model is achieved in the following way: a vertical lathe fixture for detecting polycrystalline diamond composite sheets, comprising a fixture base 1, the fixture base 1 is fixedly connected to the vertical lathe cantilever, a receiving groove 11 for receiving the polycrystalline diamond composite sheet 2 is provided on the fixture base 1, and also comprises a fixing member 3 for positioning the polycrystalline diamond composite sheet in the receiving groove 11, a waterway 12 is provided in the fixture base 1, one end of the waterway 12 is connected to the receiving groove 11 to form an outlet, and the other end of the waterway 12 forms an inlet on the outer surface of the fixture base 1, and the inlet is used to connect with an external waterway.

[0006] Furthermore, one end of the water channel 12 connected to the containing tank 11 forms an inclined surface downward, and a flushing water channel 121 is formed between the inclined surface and the end surface of the polycrystalline diamond compact 2 .

[0007] Furthermore, the cross-sectional area of ​​the flushing water channel 121 is smaller than the cross-sectional area of ​​the water channel 12 .

[0008] Furthermore, the cross-sectional area of ​​the entrance of the waterway 12 is 7 mm²~30 mm².

[0009] Furthermore, the cross-sectional area of ​​the water channel 12 gradually decreases from the inlet to the outlet.

[0010] Furthermore, a water pipe joint is provided at the entrance of the water channel 12 .

[0011] Compared with the prior art, the utility model directly sets a water channel in the fixture base and connects the receiving groove, so that the cooling water directly acts on the composite sheet with a fast flow rate, greatly improving the cooling efficiency and reducing the cooling water consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional cross-sectional view of a vertical lathe fixture for testing polycrystalline diamond composite sheets;

[0013] Figure 2 It is a planar cross-sectional view of a vertical lathe fixture for testing polycrystalline diamond composite sheets.

[0014] Among them, there are a fixture base 1, a receiving tank 11, a water channel 12, a flushing water channel 121, a polycrystalline diamond composite sheet 2, and a fixing part 3. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the present utility model, unless otherwise expressly specified and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate 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 present utility model and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0017] As attached Figure 1-2As shown, a vertical lathe fixture for detecting polycrystalline diamond composite sheets includes a fixture base 1, wherein the fixture base 1 is fixedly connected to the cantilever of the vertical lathe, and a receiving groove 11 for receiving the polycrystalline diamond composite sheet 2 is provided on the fixture base 1, and also includes a fixing member 3 for positioning the polycrystalline diamond composite sheet in the receiving groove 11. In detail, the top of the fixture is used to be connected to the vertical axis of the vertical lathe, and the fixing member 3 is preferably a bolt, or other structure that plays a fixing role, so that the polycrystalline diamond composite sheet 2 is placed obliquely and one side of its end face extends from the bottom of the fixture base 1. For details, please refer to the patent application CN 201620769902.6 made by the applicant. A positioning fixture, the present application does not involve modifications to the above structure.

[0018] In detail, Figure 1 The middle structure is one half of the clamp base 1 , and the other half is symmetrically arranged therewith, and the two are combined to form a complete clamp base 1 .

[0019] Improvements made: a water channel 12 is arranged in the clamp base 1, one end of the water channel 12 is connected to the receiving groove 11 to form an outlet, and the other end of the water channel 12 forms an inlet on the outer surface of the clamp base 1, and the inlet is used to connect with an external water channel.

[0020] Compared with the prior art, the utility model directly sets a water channel 12 in the fixture base 1 and connects it to the receiving groove 11, so that the cooling water can directly act on the composite sheet with a fast flow rate, greatly improving the cooling efficiency and reducing the cooling water consumption.

[0021] Based on the above scheme, the cooling water can be directly introduced into the receiving groove 11, flow down from the gap between the receiving groove 11 and the fixture base 1, and finally flow into the gap between the fixture and the rock grinding block;

[0022] However, as a more preferred solution, one end of the water channel 12 connected to the accommodating groove 11 forms a slope downward, and a flushing water channel 121 is formed between the slope and the end face of the polycrystalline diamond composite sheet 2, so that the cooling water is flushed to the front end face of the polycrystalline diamond composite sheet 2, and flushed forward in a fixed direction along the slope and the front end face, so that the flushing state is stable. Overall, the efficiency is improved and the accuracy of the detection results is guaranteed.

[0023] Furthermore, the cross-sectional area of ​​the flushing water channel 121 is smaller than the cross-sectional area of ​​the water channel 12, and the variable diameter design facilitates the pressurization of cooling water.

[0024] Furthermore, the cross-sectional area of ​​the inlet of the water channel 12 is 7mm²~30mm², which is equivalent to a diameter of about 3mm~6mm when the cross-section of the water channel 12 is circular. If it is too small, it will lead to insufficient water, and if it is too large, it will lead to waste.

[0025] Furthermore, the cross-sectional area of ​​the water channel 12 gradually decreases from the inlet to the outlet, which is also beneficial to the variable diameter design and the pressurization of the cooling water.

[0026] Furthermore, a water pipe joint (which can also be designed as a slot with an interference fit with the water pipe) is provided at the entrance of the water channel 12 to facilitate the connection of an external water pipe. One end of the external water pipe is connected to the entrance of the water channel 12, and the other end is connected to a water pump and a water source in turn.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A vertical lathe fixture for detecting polycrystalline diamond compacts, comprising a fixture base (1), the fixture base (1) being fixedly connected to a cantilever of the vertical lathe, the fixture base (1) being provided with a receiving groove (11) for receiving a polycrystalline diamond compact (2), and further comprising a fixing member (3) for positioning the polycrystalline diamond compact in the receiving groove (11), characterized in that: A water channel (12) is arranged in the clamp base (1), one end of the water channel (12) is connected to the receiving groove (11) to form an outlet, and the other end of the water channel (12) forms an inlet on the outer surface of the clamp base (1), and the inlet is used to connect to an external water channel.

2. A vertical lathe fixture for testing polycrystalline diamond composite sheets according to claim 1, characterized in that: One end of the water channel (12) connected to the containing groove (11) forms an inclined surface downwards, and a flushing water channel (121) is formed between the inclined surface and the end surface of the polycrystalline diamond composite sheet (2).

3. A vertical lathe fixture for testing polycrystalline diamond composite sheets as claimed in claim 2, characterized in that: The cross-sectional area of ​​the flushing water channel (121) is smaller than the cross-sectional area of ​​the water channel (12).

4. A vertical lathe fixture for testing polycrystalline diamond composite sheets according to any one of claims 1 to 3, characterized in that: The cross-sectional area of ​​the entrance of the water channel (12) is 7 mm² to 30 mm².

5. A vertical lathe fixture for testing polycrystalline diamond composite sheets as claimed in claim 4, characterized in that: The cross-sectional area of ​​the water channel (12) gradually decreases from the inlet to the outlet.

6. A vertical lathe fixture for testing polycrystalline diamond composite sheets according to claim 1, characterized in that: A water pipe joint is provided at the inlet of the water channel (12).

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