Engine flame tube back-off inclined groove machining device

Abstract

The utility model discloses an engine flame tube back-off chute processing device which comprises a tool rest and a tool rod, the tool rod is installed on the tool rest, a cutting edge is arranged on one side of the end of the tool rod, the lower end of a front tool face of the cutting edge inclines forwards, the width of the front tool face is gradually reduced from the end to the top, and the front tool face is wide in the lower portion and narrow in the upper portion. The end of the front cutter face is an arc face, the upper end of the front cutter face is provided with a cutting groove, the positions, where the back-off inclined grooves need to be machined, of the engine flame tube can be machined, the angle of the front cutter face can be adjusted, the machining requirements of different positions on the same engine flame tube can be met, the machining size is qualified, and the machining efficiency is improved. The problem that the circularity is affected in the rolling process after a chute is machined through a traditional technology is solved, the form and location tolerance states such as the roundness of the part are guaranteed, convenience is provided for subsequent machining, and a solid foundation is laid for the overall size precision of the flame tube.

Description

Technical Field

[0001] The utility model relates to the technical field of tools for machining undercut bevel grooves in flame tubes, and specifically relates to a device for machining undercut bevel grooves in flame tubes of engines. Background Art

[0002] The engine flame tube is a rotating body. When machining an undercut bevel, the traditional process is to first machine the groove into a straight bevel, then deform and tilt it through rolling to meet the drawing requirements. This method has low machining accuracy and is subject to high external forces during the rolling process. Because the workpiece is a rotating body, the rolling process can easily affect the roundness of the rotating body, which can also affect subsequent processing and the use of the part.

[0003] The processing of the undercut bevel is difficult because the width of the groove is inconsistent. At the same time, the undercut bevel is tilted as a whole and the two side walls of the groove are not parallel and have an angle, forming an inverted state. Therefore, the processing difficulty of the undercut bevel increases dramatically. For this reason, a tool for processing the undercut bevel of the engine flame tube is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a device for machining an undercut bevel groove of an engine flame tube, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for processing an inverted bevel groove of an engine flame tube, comprising a tool holder and a tool rod, the tool rod being installed on the tool holder, a cutting edge being provided on one side of the end of the tool rod, the lower end of the front cutting surface of the cutting edge being inclined forward, and the width of the front cutting surface decreasing from the end upward, so that the front cutting surface is wide at the bottom and narrow at the top, so as to match the shape of the inverted bevel groove, the end of the front cutting surface is an arc surface, and a cutting groove is provided at the upper end of the front cutting surface.

[0006] Preferably, the arc radius of the end of the rake face is 0.9 mm, and the angle between the extended intersection of the two side surfaces of the rake face width is 9.44°.

[0007] Preferably, a mounting groove is provided at the end of the tool holder, the tool rod is arranged in the mounting groove, and a clamping portion for limiting the tool rod in the mounting groove is installed on the tool holder.

[0008] Preferably, the clamping portion includes an L-shaped clamping block, one end of the L-shaped clamping block is inserted into a limiting groove opened on the side end of the tool holder, and the extended end of the L-shaped clamping block is curved and used to hook on the positioning opening opened on the tool rod. The clamping block is screwed to the tool holder through a screw rod passing through a hole opened on it to fix the tool rod.

[0009] Preferably, the positioning opening is arranged at an angle so as to deviate from the displacement path of the tool rod from the mounting groove, and is used to limit the tool rod in the mounting groove.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can process the positions on the engine flame tube where undercut grooves need to be processed, and by adjusting the angles, it can adapt to the processing requirements of different positions on the same engine flame tube, and the processing dimensions are qualified, avoiding the problem of affecting the circumference during the rolling process after the traditional process of processing the grooves, ensuring the form and position tolerances such as the roundness of the parts, providing convenience for subsequent processing, and laying a solid foundation for the overall dimensional accuracy of the flame tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The traditional processing technology is to first process this station into a schematic diagram of an inclined groove and a straight groove structure;

[0012] Figure 2 This is a schematic diagram of the connection structure between the tool holder and the tool rod of the utility model;

[0013] Figure 3 This is a disassembled diagram of the connection structure between the tool holder and the tool rod of the utility model;

[0014] Figure 4 This is a schematic diagram of the tool rod and its cutting edge structure of the utility model;

[0015] Figure 5 This is a side view of the tool rod and cutting edge structure of the utility model;

[0016] Figure 6 This is a schematic diagram of the processing state of the first working position of the utility model;

[0017] Figure 7 This is a schematic diagram of the angle between the cutting edge in the first working position and the longitudinal horizontal line of the utility model;

[0018] Figure 8 This is a schematic diagram of the two-working-station processing state of the utility model;

[0019] Figure 9 This is a schematic diagram of the angle between the cutting edge of the second working position and the longitudinal horizontal line of the present invention;

[0020] Figure 10 This is a schematic diagram of the processing state of the third working position of the present invention;

[0021] Figure 11 This is a schematic diagram of the angle between the cutting edge and the longitudinal horizontal line in the third working position of the present invention;

[0022] Figure 12 This is a schematic diagram of the processing state of the fourth working position of the present invention;

[0023] Figure 13 This is a schematic diagram of the angle between the cutting edge and the longitudinal horizontal line in the fourth working position of the present invention;

[0024] Figure 14 This is a schematic diagram of the fifth working position processing state of the present invention;

[0025] Figure 15 This is a schematic diagram of the angle between the cutting edge of the fifth working position and the longitudinal horizontal line of the present invention.

[0026] In the figure: 1-tool holder, 2-tool rod, 3-cutting edge, 4-front cutting surface, 5-end, 6-chipping groove, 7-mounting groove, 8-clamping part, 81-L-shaped clamping block, 82-limiting groove, 83-positioning opening, 84-screw. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1 The entrance of the inclined groove of the workpiece is 2mm wide. The traditional processing technology is to first process this position into an inclined groove and then deform and tilt it by rolling.

[0029] See also Figure 2-5 The utility model provides a technical solution: a device for processing an inverted bevel groove of an engine flame tube, comprising a tool holder 1 and a tool rod 2, the tool rod 2 being mounted on the tool holder 1, a cutting edge 3 being provided on one side of the end of the tool rod 2, the lower end of the rake surface 4 of the cutting edge 3 being inclined forward, and the width of the rake surface 4 decreasing from the end upward, so that the rake surface is wide at the bottom and narrow at the top, so as to match the shape of the inverted bevel groove, the end 5 of the rake surface 4 being an arc surface, and a chip-breaking groove 6 being provided on the upper end of the rake surface 4.

[0030] The arc radius of the end of the rake face 4 is 0.9 mm, and the angle between the extended intersection of the two side surfaces of the width of the rake face 4 is 9.44°.

[0031] The end of the tool holder 1 is provided with a mounting groove 7 , the tool rod 2 is arranged in the mounting groove 7 , and a clamping portion 8 for limiting the tool rod 2 in the mounting groove 7 is installed on the tool holder 1 .

[0032] The clamping portion 8 includes an L-shaped clamping block 81, one end of which is inserted into a limiting groove 82 provided on the side end of the tool holder 1. The extended end of the L-shaped clamping block 81 is curved and is used to hook on the positioning opening 83 provided on the tool rod 2. The L-shaped clamping block 81 is screwed to the tool holder 1 through a screw 84 passing through a hole provided on it to fix the tool rod 2.

[0033] The positioning opening 83 is arranged to be inclined so as to deviate from the displacement path of the tool rod 2 and the installation groove 7 , and is used to limit the tool rod 2 in the installation groove 7 .

[0034] The workpiece is a rotating body, and its processing stations include: a first working station, a second working station, a third working station, a fourth working station, and a fifth working station. When processing the undercut bevel, it is necessary to achieve the angle required by different working stations according to the cutting edge.

[0035] As shown in Figures 6-7, in the first working position, the angle between the side wall of the cutting edge 3 and the longitudinal vertical line is 29°;

[0036] As shown in Figures 8-9, in the second working position, the angle between the side wall of the cutting edge 3 and the longitudinal vertical line is 42°;

[0037] As shown in Figures 10-11, in the third working position, the angle between the side wall of the cutting edge 3 and the longitudinal vertical line is 42.5°;

[0038] As shown in Figures 12-13, in the fourth working position, the angle between the side wall of the cutting edge 3 and the longitudinal vertical line is 41°;

[0039] As shown in Figures 14-15, in the fifth working position, the angle between the side wall of the cutting edge 3 and the longitudinal vertical line is 29.5°.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for machining an undercut bevel groove of an engine flame tube, comprising a tool holder and a tool rod, wherein the tool rod is mounted on the tool holder and a cutting edge is provided on one end of the tool rod, and wherein: The lower end of the rake face of the cutting edge is inclined forward, and the width of the rake face decreases from the end upward, so that the rake face is wide at the bottom and narrow at the top, so as to match the shape of the inverted bevel groove. The end of the rake face is an arc surface, and a cutting groove is provided at the upper end of the rake face.

2. The engine flame tube undercut bevel groove processing device according to claim 1, characterized in that: The arc radius of the end of the rake face is 0.9 mm, and the angle between the two side surfaces of the rake face width at the extension intersection is 9.44°.

3. The engine flame tube undercut bevel groove processing device according to claim 1, characterized in that: The end of the tool holder is provided with a mounting groove, the tool rod is arranged in the mounting groove, and a clamping portion for limiting the tool rod in the mounting groove is installed on the tool holder.

4. The engine flame tube undercut bevel groove processing device according to claim 3, characterized in that: The clamping part includes an L-shaped clamping block, one end of which is inserted into a limiting groove opened on the side end of the tool holder, and the extended end of the L-shaped clamping block is curved and used to hook on the positioning opening opened on the tool rod. The clamping block is screwed to the tool holder through a screw rod passing through a hole opened on it to fix the tool rod.

5. The engine flame tube undercut bevel groove processing device according to claim 4, characterized in that: The positioning opening is arranged at an angle so as to deviate from the displacement path of the tool rod from the installation groove, and is used to limit the tool rod in the installation groove.

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