Boring device for efficiently machining metal holes

Abstract

The utility model discloses a boring device for efficiently machining a metal hole. The boring device comprises a movable center, the end part of the workpiece clamp is fixedly connected with the middle part of the live center; the side face of the boring device is detachably connected with the side face of the workpiece clamp, the boring device comprises a boring rod left end, a cutter head, a cutter clamp and a boring rod right end, and the boring rod left end and the cutter head are positioned through a spigot and fixedly connected through a screw; the cutterhead and the right end of the boring rod are positioned through a spigot and are fixedly connected through a screw; the cutter holders are mounted in the cutter head and are symmetrically arranged at 180 degrees in the circumferential direction; and the end part of the main shaft is fixedly connected with the end part of the live center. According to the scheme, in the machining process, the workpiece does not rotate, the boring device rotates, the rough boring cutter and the fine boring cutter are installed on the boring device, the boring efficiency is high, rough machining and fine machining are completed at the same time through one-time feeding, the boring precision is high, and the roundness and the surface roughness of holes are easier to guarantee compared with other machining modes.

Description

Technical Field

[0001] The utility model relates to the technical field of high-efficiency boring processing of inner holes, and more specifically, to a boring device for high-efficiency processing of metal holes. Background Art

[0002] Boring in mechanical processing is a further processing of forged, cast or drilled holes. Boring can expand the hole diameter, improve accuracy, reduce surface roughness, and correct the deviation of the original hole axis.

[0003] Boring processing is classified according to the movement mode of the workpiece and the tool: the first type is that the workpiece rotates as the main motion, and the movement of the boring tool is the feed motion, such as boring on a lathe; the second type is that the workpiece rotates and feeds at the same time, and the boring tool is fixed; the third type is that the workpiece is fixed, the boring tool rotates and feeds at the same time, such as boring processing on a large machine tool with a moving gantry and a fixed worktable; the fourth type is that the boring tool rotates, the workpiece is fixed on the worktable and moves along the longitudinal movement of the worktable along the bed guide rail for feed motion. Boring machines and horizontal machining centers generally use this processing method. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a boring device for efficiently processing metal holes, so as to solve the problem that the hole diameter cannot be enlarged in the prior art boring, resulting in reduced accuracy, increased surface roughness, and deviation of the hole axis.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a boring device for efficiently processing metal holes, comprising

[0006] Top activities;

[0007] A workpiece fixture, the end of which is fixedly connected to the middle of the movable center;

[0008] A boring device, the side of which is detachably connected to the side of the workpiece fixture, the boring device comprising a left end of a boring rod, a cutter disc, a tool holder, and a right end of the boring rod, the left end of the boring rod and the cutter disc are positioned by a stop and fixed by screws; the cutter disc and the right end of the boring rod are positioned by a stop and fixed by screws; the tool holder is installed in the cutter disc and is symmetrically arranged 180° around the circumference;

[0009] A main shaft, the end of which is fixedly connected to the end of the movable top.

[0010] It also includes a workpiece, a slide, and a guide rail. The middle part of the workpiece is movably connected to the outer surface of the movable top, the top of the slide is fixedly connected to the top of the workpiece, and the outer surface of the guide rail is fixedly connected to the outer surface of the slide.

[0011] It also includes a workpiece feeding system, a rotary joint, and a cutter disc body. The end of the workpiece feeding system is movably connected to the end of the guide rail, the end of the rotary joint is detachably connected to the end of the spindle, the outer surface of the cutter disc body is detachably connected to the outer surface of the cutter disc, the top of the cutter disc body is detachably connected to the bottom of the tool clamp, and they are symmetrically distributed around a circle of 180°.

[0012] Among them, the tool clamp includes a tool, a locking bolt, a tool clamp body, a tool clamp seat, a nut, an adjusting screw, and a square head screw. The tool clamp is composed of a tool clamp body and a tool clamp seat. The tool clamp seat is fixedly installed in the tool disc. The locking bolt is loosened and the boring hole diameter can be adjusted by adjusting the screw. After adjustment, the locking bolt is tightened. The tool is fixed in the tool clamp body by two square head screws and moves radially with the tool clamp body. The outer surface of the nut is threadedly connected to the middle part of the adjusting screw.

[0013] The beneficial effects of the above technical solution of the utility model are as follows:

[0014] In the above scheme, the workpiece does not rotate during the machining process, but the boring device rotates. A rough boring tool and a fine boring tool are installed on the boring device. The boring efficiency is high, and rough and fine machining are completed simultaneously in one pass. The boring accuracy is high, and the roundness and surface roughness of the hole are easier to ensure than in other machining methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a structural diagram related to the boring device of the utility model;

[0017] Figure 3 This is a structural diagram related to the cutter disc structure of the utility model;

[0018] Figure 4 This is a structural diagram related to the tool holder of the utility model.

[0019] [reference numerals]

[0020] 1. Movable center; 2. Workpiece; 3. Slide; 4. Workpiece fixture; 5. Boring device; 6. Guide rail; 7. Spindle; 8. Workpiece feeding system; 9. Rotary joint; 10. Cutter body; 51. Left end of boring rod; 52. Cutter head; 53. Tool holder; 54. Right end of boring rod; 531. Tool; 532. Locking bolt; 533. Cutter holder body; 534. Cutter holder seat; 535. Nut; 536. Adjusting screw; 537. Square head screw. DETAILED DESCRIPTION

[0021] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0022] As attached Figure 1 To Attachment Figure 4 The embodiment of the utility model provides a boring device for efficiently processing metal holes, comprising

[0023] Activity Top 1;

[0024] A workpiece fixture 4, the end of which is fixedly connected to the middle of the movable top 1;

[0025] A boring device 5, the side of which is detachably connected to the side of the workpiece fixture 4, and the boring device 5 comprises a left end 51 of a boring rod, a cutter disc 52, a tool holder 53, and a right end 54 of the boring rod. The left end 51 of the boring rod and the cutter disc 52 are positioned by a stop and fixed by screws; the cutter disc 52 and the right end 54 of the boring rod are positioned by a stop and fixed by screws; the tool holder 53 is installed in the cutter disc 52 and is symmetrically arranged 180° in the circumferential direction;

[0026] A main shaft 7, the end of which is fixedly connected to the end of the movable top 1;

[0027] One end of the boring device 5 is fixedly connected to the spindle 7, and the other end is supported by a rotating center. The spindle 7 directly drives the rotation. The rough boring tool and the fine boring tool are installed in sequence on the boring device 5 along the feeding direction. The rough and fine processing are completed at the same time in one pass. The workpiece 2 is fixed on the slide 3 by the workpiece clamp 4 and driven by the workpiece feeding system 8 to move along the guide rail 6 for feeding motion. The main body of the boring device 5 is a hollow rod. On the one hand, it reduces its own weight and reduces sagging. On the other hand, the coolant or cooling gas passes through the boring device 5 installed at the tail end of the spindle 7, and the pipeline is connected to the rough boring tool and the fine boring tool through the hollow rod;

[0028] The rough boring tool and the fine boring tool are installed in the tool holder 53. The tool holder 53 has a manual fine-tuning feed and a locking and fixing mechanism, which can adapt to a certain size range and machining allowance boring processing. When the allowance is large, two rough boring tools can be installed at the same time for processing. When the allowance is appropriate, the rear boring tool is replaced with a fine boring tool, and the processing is completed in one pass. The rough boring tool and the fine boring tool are arranged symmetrically at 180° on the circumference of the boring device 5. The symmetrical arrangement is convenient for chip removal on the one hand, and the symmetrical cutting forces offset each other on the other hand to reduce the bending deformation of the boring device 5 and affect the processing accuracy. At the same time, the symmetrical arrangement can reduce the bending deformation and vibration caused by the centrifugal force generated by the mass eccentricity when the boring device 5 rotates.

[0029] It also includes a workpiece 2, a slide 3, and a guide rail 6. The middle part of the workpiece 2 is movably connected to the outer surface of the movable top 1, the top of the slide 3 is fixedly connected to the top of the workpiece 2, and the outer surface of the guide rail 6 is fixedly connected to the outer surface of the slide 3.

[0030] Among them, it also includes a workpiece feeding system 8, a rotary joint 9, and a cutter disc body 10. The end of the workpiece feeding system 8 is movably connected to the end of the guide rail 6, the end of the rotary joint 9 is detachably connected to the end of the spindle 7, the outer surface of the cutter disc body 10 is detachably connected to the outer surface of the cutter disc 52, the top of the cutter disc body 10 is detachably connected to the bottom of the tool clamp 53, and they are symmetrically distributed around a circle of 180°.

[0031] Among them, the tool clamp 53 includes a tool 531, a locking bolt 532, a tool clamp body 533, a tool clamp seat 534, a nut 535, an adjusting screw 536, and a square head screw 537. The tool clamp 53 is composed of a tool clamp body 533 and a tool clamp seat 534. The tool clamp seat 534 is fixedly installed in the tool disc 52. The locking bolt 532 is loosened, and the boring hole diameter can be adjusted by adjusting the screw 536. After adjustment, the locking bolt 532 is tightened. The tool 531 is fixed in the tool clamp body 533 by two square head screws 537, and moves radially with the tool clamp body 533. The outer surface of the nut 535 is threadedly connected with the middle part of the adjusting screw 536.

[0032] The working process of the utility model is as follows:

[0033] In the above scheme, the supports at both ends of the boring device 5 rotate, and the workpiece 2 moves and feeds. The rotational motion of the boring device 5 is the main motion, and the workpiece 2 moves along the guide rail 6 parallel to the axis of the boring device 5 as the feeding motion. In this boring processing with the movement of the tool 531 and the workpiece 2, two tools 531 are installed for simultaneous processing, and rough and fine processing are completed in one pass. This is a multi-tool efficient processing method and a corresponding mechanical structure. The two tools 531 are symmetrically arranged in the circumferential direction and processed simultaneously. This is a tool 531 arrangement method and a corresponding mechanical structure that reduces the deformation of the boring bar and improves the processing accuracy.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A boring device for efficiently processing metal holes, characterized in that: include Activity Top (1); A workpiece fixture (4), the end of which is fixedly connected to the middle of the movable center (1); A boring device (5), wherein the side of the boring device (5) is detachably connected to the side of the workpiece fixture (4), and the boring device (5) comprises a left end (51) of a boring rod, a cutter disc (52), a tool holder (53), and a right end (54) of the boring rod. The left end (51) of the boring rod and the cutter disc (52) are positioned by a stop and fixed by screws; the cutter disc (52) and the right end (54) of the boring rod are positioned by a stop and fixed by screws; the tool holder (53) is installed in the cutter disc (52) and is arranged symmetrically at 180° in the circumferential direction; A main shaft (7), the end of which is fixedly connected to the end of the movable center (1).

2. A boring device for efficiently processing metal holes according to claim 1, characterized in that: It also includes a workpiece (2), a slide (3), and a guide rail (6), wherein the middle portion of the workpiece (2) is movably connected to the outer surface of the movable top (1), the top of the slide (3) is fixedly connected to the top of the workpiece (2), and the outer surface of the guide rail (6) is fixedly connected to the outer surface of the slide (3).

3. A boring device for efficiently processing metal holes according to claim 2, characterized in that: It also includes a workpiece feeding system (8), a rotary joint (9), and a cutter disc body (10), wherein the end of the workpiece feeding system (8) is movably connected to the end of the guide rail (6), the end of the rotary joint (9) is detachably connected to the end of the spindle (7), the outer surface of the cutter disc body (10) is detachably connected to the outer surface of the cutter disc (52), the top of the cutter disc body (10) is detachably connected to the bottom of the tool holder (53), and they are symmetrically distributed 180° around the circumference.

4. A boring device for efficiently machining metal holes according to claim 3, characterized in that: The tool holder (53) comprises a tool (531), a locking bolt (532), a tool holder body (533), a tool holder seat (534), a nut (535), an adjusting screw rod (536), and a square head screw (537). The tool holder (53) consists of a tool holder body (533) and a tool holder seat (534). The tool holder seat (534) is fixedly installed in the tool disc. The locking bolt (532) is loosened and the boring hole diameter can be adjusted by adjusting the screw rod (536). After the adjustment is in place, the locking bolt (532) is tightened. The tool (531) is fixed in the tool holder body (533) by two square head screws (537) and moves with the radial adjustment of the tool holder body (533). The outer surface of the nut (535) is threadedly connected to the middle part of the adjusting screw rod (536).

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