An internal keyway cutting device for a planer

Abstract

This utility model belongs to the field of mechanical manufacturing technology, and specifically relates to an internal keyway planing device for a planer. It can process internal keyways of workpieces with unlimited length, and its installation and operation are relatively simple. It includes a tool holder, on which a pressure plate that can move vertically is provided. One end of the pressure plate is provided with a detachable tool rod, and the other end of the tool rod is provided with a detachable cutter head. The tool holder consists of an upper tool holder and a lower tool holder, integrally formed. The planing device has a simple and reasonable structural design, is easy to install, and the tool holder and pressure plate are made of medium carbon steel, while the tool rod is made of alloy structural steel, resulting in high strength and rigidity. The tool rod is accurately positioned without adjustment; the cutter head is installed in a square hole and secured with a locking screw. The extension height can be adjusted according to the keyway size, providing good adaptability, and the cutter head is easy to install and remove.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing technology, and specifically relates to an internal keyway cutting device for a planer. Background Technology

[0002] Workpieces used in aerospace, oil drilling, mechanical transmission, and energy exploration often feature deep-hole keyways. The keyway width accuracy is H10, and the surface roughness of both sides of the keyway is Ra3.2. Due to the large length of the workpieces and the significant distance between the keyway and the end face, smaller slotting machines cannot meet these machining requirements. Larger slotting machines or electrical discharge machining (EDM) are also typically unavailable. Existing slotting machines are insufficient to machine internal keyways on longer workpieces; the cutter cannot retract from the workpiece end face, making inspection during machining impossible.

[0003] Therefore, the aforementioned problems urgently need to be addressed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an internal keyway cutting device for a planer, which can process internal keyways of workpieces with unlimited length, and is simple to install and operate.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An internal keyway cutting device for a planer includes a tool holder, a pressure plate that can move vertically along the tool holder, a detachable tool rod at one end of the pressure plate, and a detachable tool head at the other end of the tool rod.

[0007] The inserter holder includes an upper inserter seat and a lower inserter seat, which are integrally formed.

[0008] Furthermore, two vertical sliding grooves II are symmetrically formed on the seat surface of the inserter lower seat. The cross-section of the sliding groove II is cross-shaped. The sliding groove II includes a nut groove and a bolt groove that are interconnected. A hexagonal nut is provided in the nut groove and a bolt is provided in the bolt groove.

[0009] Bolt holes are provided at the four corners of the pressure plate, and the bottom surface of the pressure plate is in contact with the seat surface;

[0010] The bolt passes through the bolt hole and the front part of the bolt groove in sequence to engage with the internal thread of the hexagonal nut.

[0011] Furthermore, when the bolt and the hexagonal nut are engaged to lock the pressure plate on the lower seat of the inserter, the end of the bolt enters the rear section of the bolt groove until it abuts against the wall of the rear section of the bolt groove and is fixed and locked.

[0012] Furthermore, a vertical groove I is provided in the middle of the seat surface of the inserter lower seat;

[0013] The pressure plate has a pressure plate slider in the middle of its bottom surface. The pressure plate slider is slidably engaged with the slide groove I. The bottom surface of the pressure plate is in contact with the seat surface.

[0014] Furthermore, a threaded hole for inserting a knife is provided at the center of the pressure plate, and one end of the inserting knife is threaded and threadedly connected and fixed to the threaded hole for inserting the knife.

[0015] Furthermore, the pressure plate has a threaded hole for inserting a knife rod at its center, and the pressure plate slider has a slider threaded hole corresponding to the threaded hole for inserting the knife rod.

[0016] One end of the insert rod is threaded, and the one end of the insert rod is sequentially threadedly connected and fixed to the insert rod threaded hole and the slider threaded hole.

[0017] Furthermore, a locking threaded hole is provided at the other end of the insert rod, and a square hole is provided on the insert rod near the locking threaded hole, the locking threaded hole and the square hole being perpendicularly connected;

[0018] The cutter head is installed in the square hole, and a locking screw is threaded into the locking threaded hole. The tightening screw abuts against the cutter head and fixes it in the square hole.

[0019] Furthermore, the inserter seat is provided with a handle buckle.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This application discloses an internal keyway planing device for a planer. Installed on the planer's tool post, it is precisely positioned and locked, enabling internal keyway planing. The workpiece with the deep-hole internal keyway to be machined is clamped laterally, and the internal keyway machining is not limited by the workpiece length. The planing device has a simple and reasonable structural design, is easy to install, and features a tool holder and pressure plate made of medium carbon steel, while the tool holder is made of alloy structural steel, providing high strength and rigidity. The tool holder is accurately positioned without adjustment. The tool head is installed in a square hole and secured with a locking screw; its extension height can be adjusted according to the keyway size, offering good adaptability, and the tool head is easy to install and remove. The tool head is made of high-performance high-speed steel, providing good impact resistance and wear resistance. The internal keyway planing achieves good dimensional accuracy and surface roughness, with high efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the inserter base and pressure plate of this utility model;

[0025] Figure 3 This is a cross-sectional view of the mortise holder, pressure plate, and mortise rod of this utility model.

[0026] Figure 4 This is a schematic diagram of the pressure plate structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the insert rod structure of this utility model;

[0028] Figure 6 This is an exploded cross-sectional view of the insert rod, locking screw, and cutter head of this utility model.

[0029] Figure 7 This is a schematic diagram illustrating the application of this utility model to the internal keyway of a workpiece processed by a planer. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort prior to the description are within the scope of protection of this utility model.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] like Figure 1-7 As shown:

[0036] An internal keyway cutting device for a planer includes a tool holder 1. The tool holder 1 is provided with a pressure plate 2 that can move vertically along the tool holder 1. The pressure plate 2 can move vertically arbitrarily on the tool holder 1. After moving to the position, the pressure plate 2 is fixed. The pressure plate 2 is provided with one end of a detachable tool rod 3. The other end of the tool rod 3 is provided with a detachable cutter head 4. The length of the tool rod 3 can be designed according to actual needs. If the length of the tool rod 3 is not sufficient, two tool rods 3 can be welded into one to meet the processing needs. The height of the cutter head 4 relative to the top surface of the tool rod 3 at the other end of the tool rod 3 can be arbitrarily adjusted and then fixed. The tool holder 1 includes an upper tool holder 11 and a lower tool holder 12 integrally formed.

[0037] Furthermore, two vertical sliding grooves II8 are symmetrically provided on the seat surface 121 of the inserter lower seat 12. The cross section of the sliding grooves II8 is cross-shaped. The sliding grooves II8 include a nut groove 41 and a bolt groove 42 that are interconnected. A hexagonal nut 5 is provided in the nut groove 41, and a bolt 6 that is threadedly connected to the hexagonal nut 5 is provided in the bolt groove 42.

[0038] The size of the nut groove 41 is just right to accommodate the hexagonal nut 5. Specifically, the two symmetrical sides of the hexagonal nut 5 are fitted with the left and right walls of the nut groove 41 with minimum clearance. When the bolt 6 and the hexagonal nut 5 are threaded together, the position of the hexagonal nut 5 will not change due to the limitation of the size of the nut groove 41, and it will rotate until the bolt 6 and the hexagonal nut 5 are locked. The hexagonal nut 5 can move vertically up and down within the nut groove 41.

[0039] Bolt holes 21 are provided at the four corners of the pressure plate 2, and the bottom surface of the pressure plate 2 is in contact with the seat surface 121;

[0040] Bolt 6 passes through bolt hole 21 and bolt groove 42 in sequence and enters the internal thread of hexagonal nut 5 for engagement.

[0041] After the bolt 6 and the hexagonal nut 5 are tightened, the hexagonal nut 5 abuts against the front wall of the nut groove 41, and the bottom surface of the pressure plate 2 abuts against the seat surface 121, forming a surface-to-surface fastening between the three.

[0042] Furthermore, when the bolt 6 and the hexagonal nut 5 are engaged to lock the pressure plate 2 on the lower seat 12 of the inserter, the end of the bolt 6 enters the rear section of the bolt groove 42 until it abuts against the wall of the rear section of the bolt groove 42 and is fixed and locked.

[0043] In the initial state, the pressure plate 2 is always engaged with the hexagonal nut 5 on the lower seat of the inserter 12 by the bolt 6. When it is necessary to fix the pressure plate 2 on the lower seat of the inserter 12, the bolt 6 and the hexagonal nut 5 are threaded together by rotating the bolt 6. At this time, the bottom surface of the pressure plate 2 gradually approaches the seat surface 121, and the front of the hexagonal nut 5 gradually approaches the front wall surface of the nut groove 41 until the three surfaces are tightly fastened together. At this time, the end of the bolt 6 enters the rear section of the bolt groove 42 and is fixed and locked to the wall surface of the rear section of the bolt groove 42.

[0044] Furthermore, a vertical groove I7 is provided in the middle of the seat surface 121 of the inserter base 12; a pressure plate slider 22 is provided in the middle of the bottom surface of the pressure plate 2, and the pressure plate slider 22 slides in cooperation with the groove I7, so that the bottom surface of the pressure plate 2 is in contact with the seat surface 121; the cooperation between the pressure plate slider 22 and the groove I7 can position the pressure plate 2 and prevent the pressure plate 2 from shifting; the thickness of the pressure plate slider 22 is the same as the depth of the groove I7, which ensures the contact between the bottom surface of the pressure plate 2 and the seat surface 121.

[0045] Furthermore, the pressure plate 2 has a threaded hole 23 for inserting a knife rod at its center, and one end of the inserting knife rod 3 is threaded and threadedly connected and fixed to the threaded hole 23 for inserting a knife rod.

[0046] The insert rod 3, connected by a thread, is easy to disassemble and can be replaced with insert rods 3 of different lengths to suit different processing needs.

[0047] Furthermore, the pressure plate 2 has a insert rod threaded hole 23 at its center, and the pressure plate slider 22 has a slider threaded hole 24 corresponding to the insert rod threaded hole 23.

[0048] One end of the insert rod 3 is threaded, and one end of the insert rod 3 is sequentially threaded and fixed to the insert rod threaded hole 23 and the slider threaded hole 24.

[0049] The insert rod 3 is fixed together with the pressure plate 2 and the pressure plate slider 22 by a threaded connection, which makes the insert rod 3 securely connected.

[0050] Furthermore, a locking threaded hole 31 is provided at the other end of the insert rod 3, and a square hole 32 is provided on the insert rod 3 near the locking threaded hole 31, which passes through the insert rod 3. The locking threaded hole 31 and the square hole 32 are perpendicularly connected.

[0051] The cutter head 4 is installed in the square hole 32, and a locking screw 33 is threaded into the locking threaded hole 31. The locking screw 33 abuts against the cutter head 4 and fixes it in the square hole 32.

[0052] The cutter head 4 is easy to replace; simply tighten or loosen the locking screw 33. The square hole 32 is used to adjust the position and height of the cutter head 4, and it is then fixed by the locking screw 33 after adjustment.

[0053] Furthermore, the upper base 11 of the insert knife is provided with a handle buckle 13.

[0054] In use, remove the original tool holder of the planer and install the tool holder 1 onto the planer tool post, locking it with the original positioning pin and nut; adjust the position of the pressure plate 2 and lock it onto the tool holder 1 with bolts 6; thread the tool holder 3 onto the pressure plate 2, accurately positioning it in direction; insert the tool head 4 into the square hole 32 of the tool holder 3, adjust the extension length of the tool head 4 to adapt to the height of the inner keyway, and then lock it with locking screws 33; clamp the workpiece with a vise, position the end, and correct it according to the general method; mark the tool according to the workpiece end face; adjust the planer stroke, ensuring that the tool head 4 enters the workpiece retraction groove at the end of the cutting stroke, and that the tool holder 3 can completely retract from the workpiece end face for easy measurement and chip removal; start the planer to perform tooling machining on the inner keyway in the deep hole.

[0055] This application presents an internal keyway planing device for a planer, which solves the problem of machining internal keyways in deep holes of long workpieces. After long-term practical use, the keyway machining dimensions are stable and the surface roughness is good. The device is highly durable, low-cost, and economically efficient.

[0056] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments. Those skilled in the art can make various modifications or variations to the present invention without departing from the technical concept of the present invention, and such modifications or variations naturally fall within the protection scope of the present invention.

Claims

1. An internal keyway planing device for a planer, characterized in that: Includes a blade holder (1), on which a pressure plate (2) is provided that can move vertically along the blade holder (1), and on which a detachable blade rod (3) is provided at one end, and a detachable blade head (4) is provided at the other end of the blade rod (3). The inserter seat (1) includes an upper inserter seat (11) and a lower inserter seat (12) integrally formed.

2. The internal keyway cutting device for a planer according to claim 1, characterized in that: The lower seat (12) of the inserter is provided with two vertical sliding grooves II (8) symmetrically. The cross section of the sliding groove II (8) is cross-shaped. The sliding groove II (8) includes a nut groove (41) and a bolt groove (42) that are connected to each other. A hexagonal nut (5) is provided in the nut groove (41) and a bolt (6) is provided in the bolt groove (42). Bolt holes (21) are provided at the four corners of the pressure plate (2), and the bottom surface of the pressure plate (2) is in contact with the seat surface (121); The bolt (6) passes through the bolt hole (21) and the front section of the bolt groove (42) in sequence and enters the internal thread of the hexagonal nut (5) for engagement.

3. The internal keyway cutting device for a planer according to claim 2, characterized in that: When the bolt (6) and the hexagonal nut (5) are engaged to lock the pressure plate (2) on the lower seat (12) of the inserter, the end of the bolt (6) enters the rear section of the bolt groove (42) until it abuts against the wall of the rear section of the bolt groove (42) and is fixed and locked.

4. The internal keyway cutting device for a planer according to claim 2, characterized in that: The lower seat (12) of the inserter has a vertical groove I (7) in the middle of the seat surface (121); The pressure plate (2) has a pressure plate slider (22) in the middle of its bottom surface. The pressure plate slider (22) slides with the slide groove I (7). The bottom surface of the pressure plate (2) is in contact with the seat surface (121).

5. The internal keyway cutting device for a planer according to claim 1, characterized in that: The pressure plate (2) has a threaded hole (23) for inserting a knife rod at its center. One end of the inserting knife rod (3) is threaded and threadedly connected to the threaded hole (23) for fixation.

6. The internal keyway cutting device for a planer according to claim 4, characterized in that: The pressure plate (2) has a insert rod threaded hole (23) at its center, and the pressure plate slider (22) has a slider threaded hole (24) corresponding to the insert rod threaded hole (23). One end of the insert rod (3) is threaded, and one end of the insert rod (3) is sequentially threaded and fixed to the insert rod threaded hole (23) and the slider threaded hole (24).

7. The internal keyway cutting device for a planer according to claim 1, characterized in that: The other end of the insert rod (3) is provided with a locking thread hole (31), and a square hole (32) is provided on the insert rod (3) near the locking thread hole (31) to pass through the insert rod (3). The locking thread hole (31) and the square hole (32) are vertically connected. The cutting head (4) is installed in the square hole (32), and a locking screw (33) is threadedly connected to the locking threaded hole (31). The locking screw (33) abuts against the cutting head (4) and fixes it in the square hole (32).

8. The internal keyway cutting device for a planer according to claim 1, characterized in that: The inserter seat (11) is provided with a handle buckle (13).

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