Adjustable insert reamer

Abstract

The adjustable insert reamer comprises a reamer body, tool rests, blades and a radial adjusting mechanism, and at least two pairs of tool rests and blades are installed on the periphery of the reamer body; the blade is mounted on the cutter body through the cutter rest; a radial adjusting mechanism is installed on the cutter body and used for adjusting the position of the blade in the radial direction of the cutter body. The adjustable insert reamer solves the problem that in the prior art, the blade cannot be adjusted in the radial direction after the edge of the blade is abraded.

Description

Technical Field

[0001] The invention relates to a tool, in particular to an adjustable insert reamer. Background Art

[0002] The Chinese patent discloses a compression milling tool with an indexable cutting insert with an application number of CN201980006295.4, which includes a shank and a front cutting portion terminating at the front end of the milling tool. The front cutting portion has a first circumferential row of one or more insert receiving recesses and a second circumferential row of one or more insert receiving recesses, the first circumferential row being close to the front end of the milling tool, and each insert receiving recess being configured to receive a corresponding indexable cutting insert. The cutting insert installed in the first circumferential row has a positive axial rake angle A, and the indexable cutting insert installed in the insert recess of the second circumferential row has a negative axial rake angle B.

[0003] Although the above-mentioned compression milling tool with indexable cutting insert achieves the stability of cutting insert embedding by designing the specific structure of the cutting insert, the compression milling tool with indexable cutting insert still has the following disadvantages: due to the long-term use of the blade during processing of the compression milling tool with indexable cutting insert, the blade is easily worn, and the edge of the blade is firm in the radial direction of the tool, resulting in a reduction in the processing radius. In the prior art, the blade cannot be adjusted radially after the blade edge is worn, resulting in the processed product not meeting the quality requirements. Summary of the invention

[0004] The present invention provides an adjustable insert reamer to solve the problem in the prior art that the blade cannot be adjusted radially after the blade edge is worn.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The invention discloses an adjustable insert reamer, comprising: a tool body, a tool holder, a blade and a radial adjustment mechanism, wherein at least two pairs of tool holders and blades are installed on the periphery of the tool body; the blades are installed on the tool body through the tool holder; a radial adjustment mechanism is installed on the tool body, and the radial adjustment mechanism is used to adjust the radial position of the blade on the tool body.

[0006] Preferably, the radial adjustment mechanism comprises: a fine adjustment component, which can adjust the positions of all the blades in the radial direction of the cutter body.

[0007] Preferably, the fine-tuning assembly includes: a conical core and a press-in screw, the tip end face of the tool body is recessed to form a mounting cavity, a tool holder and a blade are arranged outside the mounting cavity, the conical core is inserted into the mounting cavity, the conical core is passed through by the press-in screw, the large end of the press-in screw presses the conical core against the inner wall of the mounting cavity, and the press-in screw is threadedly connected to the tool body.

[0008] Preferably, the installation cavity and the cone core are both truncated cone structures, and the end surface of the large end of the cone core leaks out from the tip end surface of the tool body.

[0009] Preferably, the tool holder is detachably connected to the tool body via connecting screws.

[0010] Preferably, a blade is installed at the front end of the tool holder, and an axial screw is threadedly connected to the rear end of the tool holder. The axial screw is parallel to the axis of the tool body. A vertical surface is formed on the outer wall of the tool body, which is perpendicular to the axis of the tool body and is in close contact with the end of the tool holder away from the axis screw.

[0011] Preferably, the tool holder is provided with a through hole for the connecting screw to pass through, and the inner wall of the through hole does not contact the connecting screw.

[0012] Preferably, the radial adjustment mechanism further comprises: a plurality of coarse adjustment components, one coarse adjustment component is provided corresponding to each tool holder, and the coarse adjustment component is used to adjust the position of the blade in the radial direction of the tool body.

[0013] Preferably, the coarse adjustment assembly includes: a coarse adjustment screw, the coarse adjustment screw is threadedly connected to the cutter body, the coarse adjustment screw is perpendicular to the axis of the cutter body, there is an angle between the axis of the coarse adjustment screw and the radial direction of the cutter body, and the coarse adjustment screw is used to position the top blade in the radial direction of the cutter body.

[0014] Preferably, the blade is detachably connected to the blade holder via a positioning screw.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The edge of the blade that contacts the product is the processing execution edge. When the adjustable insert reamer has been working for a long time, the processing execution edge will wear in the radial direction of the cutter body. Therefore, a radial adjustment mechanism is designed to adjust the position of the processing execution edge on the blade in the radial direction of the cutter body to ensure that the processing execution edge is in the specified radial position and the size of the inner hole of the processed product meets the requirements, thereby improving the quality of the processed products and improving market competitiveness.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Side view of an adjustable insert reamer.

[0018] Figure 2 A cross-sectional view of an adjustable insert reamer.

[0019] Figure 3 This is a diagram of the end face of an adjustable insert reamer.

[0020] Reference numerals: tool body 1 , vertical surface 10 , tool holder 2 , blade 3 , radial adjustment mechanism 4 , cone core 41 , press-in screw 42 , connecting screw 5 , axis screw 6 , coarse adjustment screw 7 , positioning screw 8 . DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments: like Figures 1 to 3 As shown, the present invention discloses an adjustable insert reamer, comprising: a tool body 1, a tool holder 2, a blade 3 and a radial adjustment mechanism 4, at least two pairs of tool holders 2 and blades 3 are installed on the periphery of the tool body 1; the blade 3 is installed on the tool body 1 through the tool holder 2; the radial adjustment mechanism 4 is installed on the tool body 1, and the radial adjustment mechanism 4 is used to adjust the radial position of the blade 3 on the tool body 1.

[0022] The radial adjustment mechanism 4 includes: a fine adjustment component, which can adjust the positions of all blades 3 in the radial direction of the blade body 1.

[0023] The fine-tuning component includes: a cone core 41 and a press-in screw 42. The tip end face of the tool body 1 is recessed to form a mounting cavity. A tool holder 2 and a blade are arranged outside the mounting cavity. The cone core 41 is inserted into the mounting cavity. The cone core 41 is passed through by the press-in screw 42. The large end of the press-in screw 42 presses the cone core 41 against the inner wall of the mounting cavity. The press-in screw 42 is threadedly connected to the tool body 1.

[0024] The installation cavity and the cone core 41 are both truncated cone structures, and the large end surface of the cone core 41 leaks out from the tip end surface of the blade body 1. After the cone core 41 is pressed in, the blade body 1 can be squeezed to expand outward.

[0025] The tool holder 2 is detachably connected to the tool body 1 via connecting screws 5 .

[0026] A blade 3 is installed at the front end of the tool holder 2, and an axial screw 6 is threadedly connected to the rear end of the tool holder 2. The axial screw 6 is parallel to the axis of the tool body 1. A vertical surface 10 is formed on the outer wall of the tool body 1. The vertical surface 10 is perpendicular to the axis of the tool body 1 and is in close contact with the end of the axial screw 6 away from the tool holder 2.

[0027] The tool holder 2 is provided with a through hole for the connecting screw 5 to pass through, and the inner wall of the through hole does not contact the connecting screw 5. After the length of the axis screw 6 extending into the tool holder 2 is adjusted, the tool holder 2 is closely attached to the vertical surface 10 through the axis screw 6, and the positions of the tool holder 2 and the blade 3 in the direction parallel to the axis center line of the cutter body 1 are positioned. Since the diameter of the through hole is larger than the outer diameter of the connecting screw 5, when the axis screw 6 on the tool holder 2 is closely attached to the vertical surface 10, the connecting screw 5 is adjusted, and the connecting screw 5 can still pass through the through hole after adjusting the axis screw 6, and the large end of the connecting screw 5 presses the tool holder 2 against the upper cutter body 1, thereby achieving positioning.

[0028] The radial adjustment mechanism 4 further includes: a plurality of coarse adjustment components, one coarse adjustment component is provided corresponding to each tool holder 2, and the coarse adjustment component is used to adjust the position of the blade 3 in the radial direction of the tool body 1.

[0029] The coarse adjustment assembly includes: a coarse adjustment screw 7, which is threadedly connected to the cutter body 1, the coarse adjustment screw 7 is perpendicular to the axis of the cutter body 1, and there is an angle between the axis of the coarse adjustment screw 7 and the radial direction of the cutter body 1, and the coarse adjustment screw 7 is used to adjust the position of the blade 3 in the radial direction of the cutter body 1. The coarse adjustment screw 7 is used to adjust the radial position of the blade 3 in the cutter body 1.

[0030] The blade 3 is detachably connected to the blade holder 2 via a positioning screw 8. The detachable connection between the blade 3 and the blade holder 2 is achieved.

[0031] In the present application, since the blade 3 is worn after long-term use, it is necessary to adjust the radial position of the blade 3 so that the blade 3 expands outward along the radial direction of the cutter body 1, so that the blade 3 can meet the product processing requirements. Based on the need to adjust the radial position of the blade 3, two radial adjustments of the blade 3 are realized, one radial adjustment is: coarse adjustment, and the other radial adjustment is: fine adjustment. The coarse adjustment is realized in the following way: the coarse adjustment screw 7 is first threadedly connected to the tool holder 2, and then the coarse adjustment screw 7 is threadedly connected to the coarse adjustment screw hole opened in the cutter body 1, and the angle between the coarse adjustment screw hole and the radial direction of the cutter body 1 is greater than 20°. Since the coarse adjustment screw 7 is already connected to the tool holder 2, the distance between the tool holder 2 and the outer wall of the cutter body 1 can be adjusted by the length of the coarse adjustment screw 7 extending into the coarse adjustment screw hole. In addition, the angle between the coarse adjustment screw hole and the radial direction of the cutter body 1 is greater than 20°, thereby realizing the adjustment of the radial position of the blade 3 on the tool holder 2 in the cutter body 1, and realizing the coarse adjustment. Fine adjustment is achieved as follows: since the pitch of the press-in screw 42 is extremely small, the press-in screw 42 can be rotated to adjust the length of the press-in screw 42 extending into the cutter body 1, and then the cone core 41 is adjusted to continue to move into the cutter body 1, and the cone core 41 squeezes the cutter body 1 to expand outward (using the yield of the cutter body 1 material), so that the blade 3 moves a very small distance in the radial direction of the cutter body 1. After coarse adjustment and fine adjustment, the position of the blade 3 in the radial direction of the cutter body 1 is more accurate, and the obtained product quality is also better. The operation of adjusting the blade 3 is faster and more accurate.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. Adjustable insert reamer, characterized in that: include: A knife body, a knife holder, a blade and a radial adjustment mechanism, wherein at least two pairs of knife holders and blades are installed on the periphery of the knife body; The blade is mounted on the cutter body through a cutter holder; A radial adjustment mechanism is installed on the cutter body, and the radial adjustment mechanism is used to adjust the position of the blade in the radial direction of the cutter body.

2. The adjustable insert reamer according to claim 1, characterized in that: The radial adjustment mechanism comprises: a fine adjustment component, which can adjust the positions of all blades in the radial direction of the cutter body.

3. The adjustable insert reamer according to claim 2, characterized in that: The fine-tuning component includes: a cone core and a press-in screw. The tip end face of the tool body is recessed to form an installation cavity. A tool holder and a blade are arranged outside the installation cavity. The cone core is inserted into the installation cavity. The cone core is passed through by the press-in screw. The large end of the press-in screw presses the cone core tightly against the inner wall of the installation cavity. The press-in screw is threadedly connected to the tool body.

4. The adjustable insert reamer according to claim 3, characterized in that: The mounting cavity and the cone core are both truncated cone structures, and the end surface of the large end of the cone core leaks out from the tip end surface of the cutter body.

5. The adjustable insert reamer according to any one of claims 2 to 4, characterized in that: The tool holder is detachably connected to the tool body via connecting screws.

6. The adjustable insert reamer according to claim 5, characterized in that: A blade is installed at the front end of the tool holder, and an axial screw is threadedly connected to the rear end of the tool holder. The axial screw is parallel to the axis of the tool body. A vertical surface is formed on the outer wall of the tool body, which is perpendicular to the axis of the tool body and is in close contact with the end of the axis screw away from the tool holder.

7. The adjustable insert reamer according to claim 6, characterized in that: The tool holder is provided with a through hole for the connecting screw to pass through, and the inner wall of the through hole does not contact the connecting screw.

8. The adjustable insert reamer according to any one of claims 2 to 4, characterized in that: The radial adjustment mechanism also includes: a plurality of coarse adjustment components, one coarse adjustment component is provided corresponding to each tool holder, and the coarse adjustment component is used to adjust the position of the blade in the radial direction of the tool body.

9. The adjustable insert reamer according to claim 8, characterized in that: The coarse adjustment component includes: a coarse adjustment screw, which is threadedly connected to the cutter body, the coarse adjustment screw is perpendicular to the axis of the cutter body, there is an angle between the axis of the coarse adjustment screw and the radial direction of the cutter body, and the coarse adjustment screw is used to position the top blade in the radial direction of the cutter body.

10. The adjustable insert reamer according to claim 1, characterized in that: The blade and the blade holder are detachably connected via positioning screws.

Images