Double-cutter-position deep hole floating boring cutter body

Abstract

The utility model relates to a double-cutter-position deep hole floating boring cutter body for floating boring of an inner hole of an ultrahigh pressure pipe, which comprises a cutter body connected with a drill rod of a deep hole drill through threads, a guide key fixed on the cutter body through a bolt, and a double-cutter-position groove arranged on the cutter body. An adjustable welding floating boring cutter block and an adjustable machine-clamped floating boring cutter block are respectively mounted in the double-cutter-position groove, the adjustable welding floating boring cutter block is provided with an integral welding blade and is used for finely floating and controlling the size precision of an inner hole and the smoothness of the sleeking inner hole, and the adjustable machine-clamped floating boring cutter block is provided with a machine-clamped blade with a coating and is used for finely floating and controlling the size precision of the inner hole and the smoothness of the sleeking inner hole. The size consistency and precision of the two ends of the inner hole of the high-pressure pipe can be improved, the smoothness of the inner hole is improved, the boring frequency is reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a double - cutter - position deep - hole floating boring tool body for boring the inner hole of an ultra - high - pressure pipe. By using this tool body, the dimensional accuracy of the inner hole and the surface finish of the inner hole after boring can be improved. At the same time, the boring frequency can be reduced, so as to achieve the purpose of improving the processing efficiency. Background Technique

[0002] At present, as a main component in a tubular reactor, the ultra - high - pressure pipe has strict requirements for the inner - hole size and the surface finish of the inner hole. The deep - hole processing procedure is the most important link in the whole machining process of this product. The quality of the inner hole after boring directly affects the processing efficiency of the subsequent process and the product quality of the finished product. Obtaining good inner - hole quality not only helps to improve the product quality, but also helps to improve the processing efficiency. Due to the extremely long length of this product, the traditional tool body cannot control both the inner - hole size and the surface finish in one floating - boring process, resulting in large dimensional deviations at both ends of the inner hole and poor inner - hole surface finish. Therefore, by designing and manufacturing a double - cutter - position deep - hole floating boring tool body, the dimensional deviation at both ends of the inner hole and the inner - hole surface finish can be controlled simultaneously in one floating - boring process. Content of the Utility Model

[0003] The purpose of the utility model is to provide a double - cutter - position deep - hole floating boring tool body that can reduce the dimensional deviation at both ends of the inner hole, obtain better inner - hole surface finish and improve the deep - hole processing efficiency, overcoming the deficiencies existing in the prior art.

[0004] The technical solution of the utility model is realized as follows: A double - cutter - position deep - hole floating boring tool body includes a tool - body main body connected to a deep - hole drill rod through a thread, and a guiding key fixed on the tool - body main body through a bolt. A double - cutter - position groove is opened on the tool - body main body. An adjustable welded floating boring tool block and an adjustable clamped floating boring tool block are respectively installed in the double - cutter - position groove. The adjustable welded floating boring tool block is installed with an integrally welded cutting blade, which is used for precisely floating - controlling the dimensional accuracy of the inner hole and finishing the inner - hole surface finish. The adjustable clamped floating boring tool block is installed with a coated clamped cutting blade, which is used for rough boring the inner hole.

[0005] Inner spray holes are opened on the tool - body main body. The inner spray holes are respectively communicated with the adjustable clamped floating boring tool block and the adjustable welded floating boring tool block. The cutting fluid flushes the iron chips on the floating boring blades of the adjustable clamped floating boring tool block and the adjustable welded floating boring tool block through the inner spray holes.

[0006] Four long - strip guiding - key grooves for fixing the guiding keys are longitudinally opened on the tool - body main body along the longitudinal direction of the tool - body main body. The guiding key is fixed in the four guiding - key grooves through a bolt. The long - strip guiding - key grooves are symmetrically opened on the tool - body main body.

[0007] The double - cutter - position groove opened on the tool - body main body is a through - groove penetrating the tool - body main body.

[0008] The positive effects of the technical solution of the present utility model are as follows: The inner hole sizes at both ends of the high-pressure pipe are good in consistency, and the inner hole has high smoothness, reducing the boring frequency and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic structural view of a double-tool-position deep-hole floating boring cutter body of the present utility model.

[0010] Figure 2 It is a front view of the cutter body main body of the present utility model.

[0011] Figure 3 It is a C-C sectional view of the cutter body main body of the present utility model.

[0012] Figure 4 It is a partial schematic view of the cutter body main body of the present utility model.

[0013] Figure 5 It is a front view of the guiding key of the present utility model.

[0014] Figure 6 It is a side view of the guiding key of the present utility model.

[0015] Figure 7 It is a top view of the guiding key of the present utility model.

[0016] The labels in the figure are: 1. cutter body main body; 2. guiding key; 3. adjustable welded floating boring cutter block; 4. adjustable clamped floating boring cutter block; 5. inner spray hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] As Figure 1 shown, a double-tool-position deep-hole floating boring cutter body includes a cutter body main body 1 connected to a deep-hole drill rod through a thread, and a guiding key 2 fixed to the cutter body main body 1 through a bolt. A double-tool-position groove is formed in the cutter body main body 1, and an adjustable welded floating boring cutter block 3 and an adjustable clamped floating boring cutter block 4 are respectively installed in the double-tool-position groove. The adjustable welded floating boring cutter block 3 is installed with an integrally welded cutting blade, which is used for precisely floating to control the inner hole size accuracy and finish the inner hole smoothness. The adjustable clamped floating boring cutter block 4 is installed with a clamped cutting blade with a coating, which is used for rough boring of the inner hole.

[0018] An internal spray hole is provided on the cutter body main body 1. The internal spray hole 5 is respectively communicated with the adjustable clamping floating boring cutter block 4 and the adjustable welded floating boring cutter block 3. The cutting fluid flushes the iron filings on the floating boring cutter blade through the internal spray hole to the adjustable clamping floating boring cutter block 4 and the adjustable welded floating boring cutter block 3. Four long guide key grooves for fixing the guide keys 2 are longitudinally provided on the cutter body main body 1 along the cutter body main body. The guide keys 2 are fixed in the four guide key grooves by bolts. The long guide key grooves are symmetrically provided on the cutter body main body 1. The double cutter position groove provided on the cutter body main body 1 is a through groove penetrating the cutter body main body 1.

[0019] A double cutter position deep hole floating boring cutter body includes an adjustable welded floating boring cutter block, an adjustable clamping floating boring cutter block, a guide key, and a cutter body main body. First, install the guide key on the cutter body, then screw the cutter body main body onto the drill pipe through threads, and finally install the two adjusted floating boring cutter blocks at the corresponding cutter positions, and finally start the drill pipe to perform floating boring.

[0020] A double cutter position deep hole floating boring cutter body, the guide key 2 is fixed on the cutter body main body 1 by bolts. The cutter body main body 1 is connected with the deep hole drill pipe through threads. After connection, adjust the machining dimensions of the adjustable welded floating boring cutter block 3 and the adjustable clamping floating boring cutter block 4 according to the inner hole size of the workpiece to be machined and install them at the corresponding cutter positions of the cutter body main body 1 respectively. After the equipment is started, the cutter body main body 1 rotates together with the drill pipe to start floating boring. During the machining process, the cutter body main body 1 is pulled by the drill pipe to move in the inner hole of the workpiece. The adjustable clamping floating boring cutter block 4 and the welded floating boring cutter block 3 perform floating boring machining. The adjustable clamping floating boring cutter block 4 is installed with clamping blades for rough boring of the inner hole. The welded floating boring cutter block 3 is installed with integral welded blades for precisely controlling the inner hole size accuracy and finishing the inner hole surface finish. Through the cooperation of the two cutter blocks, the inner hole size accuracy control and the requirements for surface finish can be achieved in one floating boring.

Claims

1. A double-position deep hole floating boring tool body, comprising a tool body (1) connected to a deep hole drill rod by a thread, and a guide key (2) fixed to the tool body (1) by a bolt, characterized in that: A double tool position slot is provided on the cutter body (1), and an adjustable welded floating boring block (3) and an adjustable machine-clamped floating boring block (4) are respectively installed in the double tool position slot. The adjustable welded floating boring block (3) is installed with an integral welded blade for fine floating control of the inner hole size accuracy and finishing of the inner hole finish, and the adjustable machine-clamped floating boring block (4) is installed with a coated machine-clamped blade for rough boring the inner hole.

2. A double-position deep hole floating boring tool body according to claim 1, characterized in that: An inner spray hole (5) is provided on the cutter body (1), and the inner spray hole is connected to the adjustable machine-clamped floating boring block (4) and the adjustable welded floating boring block (3) respectively. Cutting fluid flows through the inner spray hole to the adjustable machine-clamped floating boring block (4) and the adjustable welded floating boring block (3) to flush iron chips on the floating boring blade.

3. A double-position deep hole floating boring tool body according to claim 1, characterized in that: Four long strip guide key slots for fixing guide keys (2) are provided on the cutter body (1) along the longitudinal direction of the cutter body. The guide keys (2) are fixed in the four guide key slots by bolts. The long strip guide key slots are symmetrically provided on the cutter body (1).

4. The double-position deep hole floating boring tool body according to claim 1, characterized in that: The double tool position groove formed on the tool body (1) is a through groove penetrating the tool body (1).

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