Size-adjustable round hole broach

Abstract

The utility model relates to the technical field of round hole broaching tools, and discloses a size-adjustable round hole broaching tool which comprises a first round hole broaching tool and a second round hole broaching tool, the first round hole broaching tool is fixedly installed on the surface of a tool apron, a tool handle is fixedly installed on the surface of the tool apron, and a control assembly is arranged in the tool apron. A control assembly is arranged, a pressing plate is pressed, a pressing rod fixed to the surface of the pressing plate abuts against the tangent plane of a supporting block, the supporting block drives a flat rod and a transverse rod to move under supporting of a second spring, a clamping rod fixed to the surface of the transverse rod moves out of a clamping groove in a cylinder, a rotating disc is rotated, and the rotating disc drives a threaded rod to rotate; the movable block is stressed to drive the movable rod to move, the second round hole broaching tool fixed to the surface of the movable rod synchronously moves, and therefore the distance between the second round hole broaching tool and the first round hole broaching tool can be changed, and the multiple effects of adjusting the machining size and shape of a workpiece, correcting the machining error, achieving the special shape and the like can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of round hole broaches, in particular to a round hole broach with adjustable size. Background Art

[0002] A round hole broach is a tool used in machining, usually for broaching and boring round holes. Its working principle is to insert the tool into the round hole and then rotate the tool so that the cutting edge of the tool cuts the material on the inner wall of the round hole to form the desired shape and size.

[0003] The structure of a round hole broach generally consists of a handle, a head and a blade. The handle is usually made of carbide or high-speed steel, which has sufficient strength and rigidity. The head is the part connected to the handle and is used to fix the blade. The blade is usually made of high-speed steel or carbide, which has high hardness and wear resistance.

[0004] Existing broaches often cannot adjust their sizes. When the cutting teeth cannot meet the requirements due to wear and other reasons, it is often necessary to directly replace the tool. Frequent tool replacement will reduce work efficiency and lead to low practicality of the device. To address this problem, we proposed a round hole broach with adjustable size. Utility Model Content

[0005] The utility model aims to provide a round hole broach with adjustable size to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a round hole broach with adjustable size, comprising a round hole broach 1 and a round hole broach 2, wherein the round hole broach 1 is fixedly mounted on the surface of a tool holder, a tool handle is fixedly mounted on the surface of the tool holder, a control component is arranged in the tool holder, and the control component comprises:

[0007] A rotating disk, the rotating disk is rotatably connected to the surface of the knife seat, the knife seat is penetrated by a threaded rod and is rotatably connected to the threaded rod, and the surface of the threaded rod is fixedly connected to the surface of the rotating disk;

[0008] A moving block, the moving block is penetrated by a threaded rod and is threadedly connected to the threaded rod, a moving rod is fixedly mounted on the surface of the moving block, the moving rod penetrates the tool holder and is slidably connected to the tool holder, and a surface of the moving rod is fixedly connected to a surface of the second round hole broach;

[0009] A pressure plate, a pressure rod is fixedly installed on the surface of the pressure plate, the pressure rod penetrates the knife seat and is slidably connected to the knife seat, the inner wall of the knife seat is fixedly connected to one end of a spring, and the other end of the spring is fixedly installed on the surface of the pressure rod;

[0010] A limiting piece is arranged in the tool holder, so that the processing size and shape of the workpiece can be adjusted, the processing error can be corrected, and a special shape can be achieved.

[0011] Preferably, a through hole is provided on the surface of the knife seat, and the provision of the through hole can ensure the stable movement of the moving rod.

[0012] Preferably, the limiting member comprises: a support block, the support block is fixedly mounted on the surface of the flat rod, a cross bar is fixedly mounted on the surface of the flat rod, and when the support block is impacted, the flat rod will drive the cross bar to move.

[0013] Preferably, the cross bar passes through the support plate and is slidably connected to the support plate, the surface of the support plate is fixedly connected to one end of spring two, the other end of spring two is fixedly mounted on the surface of the cross bar, the support plate is fixedly mounted on the inner wall of the knife seat, a clamping rod is fixedly mounted on the surface of the cross bar, and the cross bar can slide in the support plate under the support of spring two.

[0014] Preferably, a slot is provided on the surface of the cylinder, and the provision of the slot can limit the rotation of the cylinder.

[0015] Preferably, the cross-sectional shape of the support block is a trapezoid, and the trapezoidal support block can drive the flat rod to move when subjected to force.

[0016] Compared with the prior art, the utility model provides a round hole broach with adjustable size, which has the following beneficial effects:

[0017] 1. The round hole broach with adjustable size is provided with a control component. The pressure plate is pressed, and the pressure rod fixed on the surface of the pressure plate contacts the cross section of the support block. The support block drives the flat rod and the cross rod to move under the support of the second spring. The clamping rod fixed on the surface of the cross rod moves out of the clamping groove in the cylinder. The turntable is rotated, and the turntable drives the threaded rod to rotate. The moving block is driven by force to drive the moving rod to move, and the round hole broach 2 fixed on the surface of the moving rod moves synchronously. Therefore, the distance between the round hole broach 2 and the round hole broach 1 can be changed, which can realize the adjustment of the processing size and shape of the workpiece, correct the processing error, and realize various functions such as special shape.

[0018] 2. The round hole broach with adjustable size is provided with a slot, and the setting of the slot can limit the rotation of the round rod and the threaded rod. This method can avoid the situation where the distance between the round hole broach 1 and the round hole broach 2 changes due to accidental touching of the turntable, thereby improving the overall safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the control component of the utility model.

[0022] In the figure: 1. tool handle; 2. tool holder; 3. through hole; 4. round hole broach 1; 5. round hole broach 2; 6. control assembly; 61. turntable; 62. threaded rod; 63. cylinder; 64. moving block; 65. moving rod; 66. pressure plate; 67. pressure rod; 68. spring 1; 69. limiting member; 691. support block; 692. flat rod; 693. cross bar; 694. support plate; 695. spring 2; 696. clamping rod; 7. clamping slot. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a round hole broach with adjustable size, including round hole broach 1 4 and round hole broach 2 5, round hole broach 1 4 is fixedly mounted on the surface of a tool holder 2, and a through hole 3 is provided on the surface of the tool holder 2, and the provision of the through hole 3 can ensure the stable movement of a moving rod 65. A tool handle 1 is fixedly mounted on the surface of the tool holder 2, and a control assembly 6 is provided in the tool holder 2, and the control assembly 6 includes: a rotating disk 61, a threaded rod 62, a cylinder 63, a moving block 64, a moving rod 65, a pressing plate 66, a pressing rod 67, a spring 1 68, and a limiting member 69.

[0024] The turntable 61 is rotatably connected to the surface of the tool holder 2, the tool holder 2 is penetrated by the threaded rod 62 and is rotatably connected to the threaded rod 62, the surface of the threaded rod 62 is fixedly connected to the surface of the turntable 61, the moving block 64 is penetrated by the threaded rod 62 and is threadedly connected to the threaded rod 62, the surface of the moving block 64 is fixedly installed with a moving rod 65, the moving rod 65 penetrates the tool holder 2 and is slidably connected to the tool holder 2, and the surface of the moving rod 65 is fixedly connected to the surface of the round hole broach 25; the surface of the pressing plate 66 is fixedly installed with a pressing rod 67, the pressing rod 67 penetrates the tool holder 2 and is slidably connected to the tool holder 2, the inner wall of the tool holder 2 is fixedly connected to one end of a spring 68, and the other end of the spring 68 is fixedly installed on the surface of the pressing rod 67;

[0025] The limiting member 69 is provided in the tool holder 2, and the pressing plate 66 is pressed. The pressure rod 67 fixed on the surface of the pressing plate 66 is forced to move under the support of the spring 1 68, and at the same time, the pressure rod 67 will contact the cross section of the support block 691, and the support block 691 drives the flat rod 692 and the cross rod 693 to move under the support of the spring 2 695, and the clamping rod 696 fixed on the surface of the cross rod 693 is moved out of the clamping groove 7 in the cylinder 63, keeping the pressing force unchanged, and then the turntable 61 is rotated, and the turntable 61 drives the threaded rod 62 to rotate. When the threaded rod 62 rotates, the cylinder 63 rotates synchronously, and the moving block 64 is forced to drive the moving rod 65 to move, and the circular hole broach 2 5 fixed on the surface of the moving rod 65 moves synchronously, so the distance between the circular hole broach 2 5 and the circular hole broach 1 4 can be changed, so it is possible to adjust the processing size and shape of the workpiece, correct the processing error, and realize a special shape and other functions.

[0026] The limiting member 69 includes a support block 691, which is fixedly mounted on the surface of a flat rod 692, and a cross bar 693 is fixedly mounted on the surface of the flat rod 692. When the support block 691 is abutted, the flat rod 692 will drive the cross bar 693 to move. The cross bar 693 penetrates the support plate 694 and is slidably connected with the support plate 694. The surface of the support plate 694 is fixedly connected with one end of a spring 695, and the other end of the spring 695 is fixedly mounted on the surface of the cross bar 693. The support plate 694 is fixedly mounted on the inner wall of the knife seat 2. A clamping rod 696 is fixedly mounted on the surface of the cross bar 693. The cross bar 693 can slide in the support plate 694 under the support of the spring 695. A clamping groove 7 is provided on the surface of the cylinder 63, and the setting of the clamping groove 7 can limit the rotation of the cylinder 63. The cross section of the support block 691 is a trapezoid, and the trapezoidal support block 691 can drive the flat rod 692 to move when subjected to force.

[0027] In the present invention, when the cutting teeth are in use and the size cannot meet the requirements due to wear and other reasons, and the size needs to be adjusted, the pressing plate 66 is pressed, and the pressing rod 67 fixed on the surface of the pressing plate 66 is forced to move under the support of the spring 1 68. At the same time, the pressing rod 67 will contact the cut surface of the support block 691, and the support block 691 drives the flat rod 692 and the cross rod 693 to move under the support of the spring 2 695. The clamping rod 696 fixed on the surface of the cross rod 693 is moved out of the clamping groove 7 in the cylinder 63, and the pressing force is kept unchanged. Then the turntable 61 is rotated, and the turntable 61 drives the threaded rod 62 to move. When the threaded rod 62 rotates, the cylinder 63 rotates synchronously, and the moving block 64 is forced to drive the moving rod 65 to move, and the round hole broach 2 5 fixed on the surface of the moving rod 65 moves synchronously. Therefore, the distance between the round hole broach 2 5 and the round hole broach 1 4 can be changed. Therefore, it is possible to adjust the processing size and shape of the workpiece, correct the processing error, and realize various functions such as special shape. After the size is adjusted, the pressing force is released, and the pressure rod 67 will bounce up under the support of the spring 1 68, and the clamping rod 696 will be re-locked into the clamping groove 7 in the cylinder 63, thereby completing the restriction of the round hole broach 2 5.

[0028] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A size-adjustable round hole broach, comprising a first round hole broach (4) and a second round hole broach (5), characterized in that: The circular hole broach (4) is fixedly mounted on the surface of a tool holder (2), a tool handle (1) is fixedly mounted on the surface of the tool holder (2), a control component (6) is arranged inside the tool holder (2), and the control component (6) comprises: a cylinder (63); A rotating disk (61), the rotating disk (61) being rotatably connected to the surface of the knife seat (2), the knife seat (2) being penetrated by a threaded rod (62) and being rotatably connected to the threaded rod (62), the surface of the threaded rod (62) being fixedly connected to the surface of the rotating disk (61); A moving block (64), the moving block (64) is penetrated by the threaded rod (62) and is threadedly connected to the threaded rod (62), a moving rod (65) is fixedly mounted on the surface of the moving block (64), the moving rod (65) penetrates the tool holder (2) and is slidably connected to the tool holder (2), and the surface of the moving rod (65) is fixedly connected to the surface of the second round hole broach (5); A pressure plate (66), a pressure rod (67) is fixedly mounted on the surface of the pressure plate (66), the pressure rod (67) passes through the knife seat (2) and is slidably connected to the knife seat (2), the inner wall of the knife seat (2) is fixedly connected to one end of a spring (68), and the other end of the spring (68) is fixedly mounted on the surface of the pressure rod (67); A limiting member (69), a limiting member (69) is arranged inside the knife seat (2).

2. The size-adjustable round hole broach according to claim 1, characterized in that: A through hole (3) is provided on the surface of the knife seat (2).

3. The size-adjustable round hole broach according to claim 1, characterized in that: The limiting member (69) comprises a support block (691), wherein the support block (691) is fixedly mounted on the surface of a flat rod (692), and a cross bar (693) is fixedly mounted on the surface of the flat rod (692).

4. The size-adjustable round hole broach according to claim 3, characterized in that: The cross bar (693) passes through the support plate (694) and is slidably connected to the support plate (694); the surface of the support plate (694) is fixedly connected to one end of the second spring (695); the other end of the second spring (695) is fixedly mounted on the surface of the cross bar (693); the support plate (694) is fixedly mounted on the inner wall of the knife seat (2); and a clamping rod (696) is fixedly mounted on the surface of the cross bar (693).

5. The size-adjustable round hole broach according to claim 1, characterized in that: A clamping groove (7) is provided on the surface of the cylinder (63).

6. The size-adjustable round hole broach according to claim 3, characterized in that: The cross-sectional shape of the support block (691) is a trapezoid.

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