Guide positioning device for small boring cutter

Abstract

The invention relates to a guiding and positioning device for a small boring cutter. The guiding and positioning device comprises a fixed bracket, a guiding and positioning frame and a compression bolt, the fixing support comprises a main body part and a cutter handle part, and the cutter handle part is arranged at the rear end of the main body part and used for being connected with a machine tool cutter rest. An inner hole matched with a boring cutter is formed in the front end of the main body part; the guide positioning frame comprises a guide rod and a positioning rod; the guide rod is connected to the main body part in a front-back sliding manner, and the front end of the guide rod extends out of the front end of the main body part; the positioning rod is vertically connected with the front end of the guide rod, a positioning plane is arranged at the position, opposite to the main shaft of the fixing support, of the positioning rod, and the positioning plane and the cutting plane are coplanar; the compression bolt is connected with the fixing bracket, and the end part of the fastening bolt is used for compressing the guide rod; the device is simple in structure, low in manufacturing cost, capable of rapidly adjusting and determining that the point of the boring cutter is in a cutting plane, easy and convenient to operate and capable of improving the boring cutter using efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of machining tools, and specifically to a small boring tool guide and positioning device. Background Technology

[0002] Installing the boring bar's working section is crucial, especially for adjustments made to workpieces using an eccentric principle. After installing the boring bar, carefully observe whether the upper plane of the boring bar's main cutting edge is on the same plane as the feed direction of the boring bar head. Only when they are installed on the same plane can the cutting edges be ensured to be at the normal machining cutting angle.

[0003] Therefore, the reference line position of the tool needs to be adjusted before using a boring tool. Currently, this adjustment is usually done through a rotary table, plate, or CNC system, which is cumbersome and greatly reduces the efficiency of boring tool use. Summary of the Invention

[0004] Based on the above description, the present invention provides a small boring tool guide and positioning device, which has a simple structure, low manufacturing cost, can quickly adjust and determine that the boring tool tip is in the cutting plane, is easy to operate, and improves the efficiency of using boring tools.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a small boring tool guide and positioning device, comprising a fixed bracket, a guide and positioning frame and a clamping bolt; The fixed bracket includes a main body and a tool holder. The tool holder is located at the rear end of the main body and is used to connect to the machine tool post. The front end of the main body has an inner hole that matches the boring tool. The axis of the inner hole is collinear with the spindle of the fixed bracket. The side wall of the main body has a set hole that connects to the inner hole. A set bolt is threaded into the set hole, and the end of the set bolt is used to press the boring tool. The guide positioning frame includes a guide rod and a positioning rod; the guide rod is slidably connected to the main body, and the front end of the guide rod extends from the front end of the main body; the positioning rod is vertically connected to the front end of the guide rod, and a positioning plane is provided at the position of the positioning rod opposite to the main shaft of the fixed bracket, and the positioning plane is coplanar with the cutting plane; The clamping bolt connects to the fixed bracket, and the end of the set bolt is used to clamp the guide rod.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the guide rod is provided with a length scale, which is used as a reference for the overhang length of the boring tool.

[0008] Furthermore, a keyway extending forward and backward is provided on the side wall of the main body; the guide rod is slidably disposed in the keyway.

[0009] Furthermore, the cross-section of the keyway is square.

[0010] Furthermore, the fixing bracket also includes a clamp, which is slidably fitted onto the main body, and the clamping bolt is installed on the clamp through a threaded hole.

[0011] Furthermore, the clamp can be slidably fitted onto the main body.

[0012] Furthermore, the main body is cylindrical, and the clamp is rotatably fitted onto the main body.

[0013] Furthermore, the fixing bracket includes at least two clamps, each of which is provided with a clamping bolt.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. This invention features a guide positioning frame on a fixed bracket, which has a simple structure, low manufacturing cost, and can quickly adjust and determine that the boring tool tip is in the cutting plane. It is easy to operate and improves the efficiency of using the boring tool. 2. The present invention has high positioning support strength and good positioning effect, which can effectively adjust and determine the boring tool tip in the cutting plane, ensuring smooth cutting, accurate dimensions, and product quality. It can realize modular design and has strong versatility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a small boring tool guide and positioning device provided in an embodiment of the present invention; Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 The left view; Figure 4 This is a schematic diagram of the main body in an embodiment of the present invention; Figure 5 This is a schematic diagram of the clamp structure in an embodiment of the present invention; The attached diagram lists the components represented by each number as follows: 1. Fixed bracket; 11. Main body; 111. Inner hole; 112. Set hole; 113. Keyway; 12. Tool holder; 13. Clamp; 131. Threaded hole; 2. Guide positioning frame; 21. Guide rod; 22. Positioning rod; 23. Positioning plane; 3. Set bolt; 4. Clamping bolt; 5. Boring tool bar or extension rod. Detailed Implementation

[0016] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0018] It is understood that spatial relation terms such as “below,” “under,” “below,” “below,” “above,” “above,” etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “below,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0019] A small boring tool guide and positioning device includes a fixed bracket 1, a guide and positioning frame 2, and a clamping bolt 4.

[0020] The fixed bracket 1 includes a main body 11 and a tool holder 12. The tool holder 12 is located at the rear end of the main body 11 and is used to connect to the machine tool post. The shape of the tool holder 12 matches the machine tool post and can be circular, square, or any shape. In this embodiment, the cross-section of the tool holder 12 is square, which is used to achieve clamping on the machine tool post that holds a square tool bar.

[0021] The front end of the main body 11 has an inner hole 111 that matches the boring bar, and the axis of the inner hole 111 is collinear with the main shaft of the fixed bracket 1. The boring bar shank or the spring collet extension rod 5 with a small diameter boring bar is inserted into the inner hole 111. The side wall of the main body 11 has a set hole 112 that connects to the inner hole 111, and a set bolt 3 is threaded into the set hole 112. The end of the set bolt 3 is used to press the boring bar shank or the extension rod 5.

[0022] The guide positioning frame 2 includes a guide rod 21 and a positioning rod 22. The guide rod 21 is slidably connected to the main body 11, and the front end of the guide rod 21 extends from the front end of the main body 11. A length scale is provided on the guide rod 21 for use as a reference for the overhang length of the boring tool. The positioning rod 22 is vertically connected to the front end of the guide rod 21, and a positioning plane 23 is provided on the positioning rod 22 opposite to the spindle of the fixed bracket 1. The positioning plane 23 is coplanar with the cutting plane.

[0023] The clamping bolt 4 connects to the fixing bracket 1, and the end of the set bolt 3 is used to clamp the guide rod 21. The set bolt 3 can be directly installed on the fixing part of the main body 11, but in this embodiment, the fixing bracket 1 also includes a clamp 13, which can be slidably sleeved on the main body 11, and the clamping bolt 4 is installed on the clamp 13 through the threaded hole 131.

[0024] A keyway 113 extending forward and backward is provided on the side wall of the main body 11. A guide rod 21 is slidably disposed within the keyway 113, and a length scale on the guide rod 21 serves as a reference for the overhang length of the boring tool. The keyway 113 can be circular, square, or any shape. In this embodiment, the cross-section of the keyway 113 is square to prevent the guide rod 21 from rolling within the keyway 113.

[0025] The fixed bracket 1 includes at least two clamps 13, each clamp 13 being equipped with a clamping bolt 4. Furthermore, the clamps 13 are slidably fitted onto the main body 11, and their positions can be adjusted according to the degree of movement of the guide rod 21, ensuring that the clamping bolts 4 on the clamps 13 can clamp the guide rod 21. Simultaneously, by adjusting the spacing and position of the two clamps 13, the clamps 13 can be made to avoid the set hole 112.

[0026] The method for positioning the tip of a small-diameter boring tool to the base surface using this embodiment is as follows: (1) Insert the boring bar or extension rod 5 into the inner hole 111 of the fixed bracket 1. Adjust the boring bar overhang length according to the depth of the inner hole 111 of the workpiece. Slightly tighten the set bolt 3 and slightly press the boring bar or extension rod 5 so that the boring bar or extension rod 5 does not move.

[0027] (2) Install two clamps 13 on the fixed bracket 1. The screw hole of the clamp 13 corresponds to the keyway 113. Note that the clamp 13 should not collide with the tip of the boring tool to prevent damage to the tip.

[0028] (3) The guide positioning frame 2 passes through the inner circle of the clamp 13 and slides into the keyway 113. After adjusting the relative position of the positioning plane 23 and the boring tool tip, the clamping bolt 4 is inserted into the threaded hole 131 on the clamp 13 and the clamping bolt 4 is tightened to keep the guide positioning frame 2 stationary.

[0029] (4) Loosen the set bolt 3 so that the boring bar or extension rod 5 can rotate in the hole of the fixed bracket 1. Then, while keeping the boring bar overhang length unchanged, rotate the boring bar and adjust the boring bar tip to contact the positioning plane 23. Ensure that the gap between the boring bar tip and the positioning plane 23 is less than the predetermined error. Then tighten the set bolt 3 and re-measure that the gap between the tool tip and the positioning plane 23 is not greater than the predetermined error. Tighten the set bolt 3 with force to make the boring bar or extension rod 5 securely clamped.

[0030] (5) Remove the guide positioning frame 2 and the clamp 13. In this embodiment, the main body 11 is cylindrical, and the clamp 13 is rotatably fitted onto the main body 11. Alternatively, the clamp 13 can be rotated to any position where the clamping bolt 4 does not correspond to the keyway 113, and the clamping bolt 4 can be tightened to fix the clamp 13.

[0031] This embodiment features a guide positioning frame 2 mounted on the fixed bracket 1, resulting in a simple structure, low manufacturing cost, and the ability to quickly adjust and position the boring tool tip within the cutting plane. This simplifies operation and improves the efficiency of using the boring tool. Furthermore, this embodiment offers high positioning support strength and excellent positioning effect, effectively ensuring the boring tool tip is within the cutting plane, guaranteeing smooth cutting, accurate dimensions, and product quality. It also allows for modular design and strong versatility.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A small boring tool guiding and positioning device, characterized in that, Includes a fixed bracket, a guide positioning frame, and clamping bolts; The fixed bracket includes a main body and a tool holder. The tool holder is located at the rear end of the main body and is used to connect to the machine tool post. The front end of the main body has an inner hole that matches the boring tool. The axis of the inner hole is collinear with the spindle of the fixed bracket. The side wall of the main body has a set hole that connects to the inner hole. A set bolt is threaded into the set hole, and the end of the set bolt is used to press the boring tool. The guide positioning frame includes a guide rod and a positioning rod; the guide rod is slidably connected to the main body, and the front end of the guide rod extends from the front end of the main body; the positioning rod is vertically connected to the front end of the guide rod, and a positioning plane is provided on the positioning rod opposite to the main shaft of the fixed bracket, and the positioning plane is coplanar with the cutting plane; The clamping bolt connects to the fixed bracket, and the end of the set bolt is used to clamp the guide rod.

2. The small boring tool guiding and positioning device according to claim 1, characterized in that, The guide rod is equipped with a length scale, which serves as a reference for the overhang length of the boring tool.

3. The small boring tool guiding and positioning device according to claim 1, characterized in that, The main body has a keyway extending forward and backward on its side wall; the guide rod is slidably disposed in the keyway.

4. The small boring tool guiding and positioning device according to claim 3, characterized in that, The cross-section of the keyway is square.

5. A small boring tool guiding and positioning device according to claim 3, characterized in that, The fixing bracket also includes a clamp, which is slidably fitted onto the main body, and the clamping bolt is installed on the clamp through a threaded hole.

6. The small boring tool guiding and positioning device according to claim 5, characterized in that, The clamp can be slidably fitted onto the main body.

7. A small boring tool guiding and positioning device according to claim 5, characterized in that, The main body is cylindrical, and the clamp is rotatably fitted onto the main body.

8. A small boring tool guiding and positioning device according to claim 5, characterized in that, The fixed bracket includes at least two clamps, and each clamp is provided with a clamping bolt.

Images