Cutter for valve body machining

Abstract

The utility model relates to a cutter for processing a valve body, which belongs to the technical field of valve body cutters and comprises a cutter handle and a cutter bar, a cutter head for processing the valve body is arranged on the cutter bar, a fastener is arranged on the cutter handle, the cutter handle is detachably connected with the cutter bar through the fastener, and a pre-pressing component is arranged on the inner side of the cutter handle. An elastic part is arranged between the pre-pressing part and the cutter handle, and a position adjusting part penetrating through the cutter handle is arranged on the outer side of the pre-pressing part and used for adjusting the pre-tightening force of the pre-pressing part on the cutter bar. The tool bar and the tool handle are fixedly connected together through the fastening piece, the elastic piece applies pre-tightening force to the tool bar and the fastening piece through the pre-pressing component, connection between the tool bar and the tool handle is firmer, vibration of the tool during operation is reduced, the pre-pressing component is lifted through the position adjusting piece, resistance generated during fastening piece dismounting can be reduced, and the tool is convenient to use. And abrasion of the cutter caused by replacement of the cutter bar is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve body tools, and particularly relates to a tool for valve body processing. Background Technique

[0002] During the valve body processing, due to the high hardness of the processing material and the strict requirements for processing accuracy, the tool usually needs to bear a large working intensity. In order to improve the processing efficiency and reduce the tool replacement cost, many valve body tools adopt a detachable design of the tool shank and the tool holder. When the cutting edge of the tool is worn or damaged, only the tool shank or the tool holder can be replaced, without replacing the entire tool, saving costs and improving production efficiency. Usually, the connection between the tool shank and the tool holder is fixedly connected through a fastening structure. This detachable connection method not only provides flexibility for valve body processing, but also enables quick replacement and combination of tools according to different processing requirements, improving the adaptability of the tool.

[0003] However, in the prior art, the method of using a fastening structure such as a threaded fastener to fix the tool shank and the tool holder has certain defects. The vibration and stress generated during the valve body processing may cause the fastening structure to gradually loosen, and then the connection between the tool shank and the tool holder becomes unstable. This problem of unstable connection will not only reduce the processing accuracy and affect the processing quality of the valve body, but also may cause the tool shank and the tool holder to separate during operation. In addition, although there is also a method of applying a pre-tightening force to the fastening structure in the prior art to improve the reliability of the tool connection, after applying the pre-tightening force, the difficulty of disassembling the tool also increases, which is not conducive to improving production efficiency. Therefore, how to maintain the detachable property of the tool and ensure that the tool can be disassembled conveniently while ensuring a firm connection has become an urgent technical problem to be solved in the design of valve body processing tools. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a tool for valve body processing to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] A cutting tool for valve body processing, comprising a tool shank and a tool bar, and a tool tip for processing the valve body is provided on the tool bar. A fastener is provided on the tool shank, and the tool shank is detachably connected to the tool bar through the fastener. A preloading member is provided inside the tool shank, an elastic member is provided between the preloading member and the tool shank, and a position adjusting member penetrating the tool shank is provided outside the preloading member. The position adjusting member is used to adjust the pre-tightening force of the preloading member on the tool bar. When assembling the cutting tool, insert the tool bar into the tool shank, and fixedly connect the tool bar and the tool shank together through the fastener. At this time, the elastic member is compressed, and it applies a pre-tightening force to the tool bar and the fastener through the preloading member, making the connection between the tool bar and the tool shank more reliable, reducing the vibration during the operation of the cutting tool, and pulling up the preloading member through the position adjusting member to reduce the resistance when disassembling the fastener.

[0007] As a further optimized solution of the present utility model, the tool shank includes a housing, a strip-shaped adjusting hole corresponding to the position adjusting member is provided on the side wall of the housing, and a supporting structure for hanging the position adjusting member is fixedly provided outside the housing.

[0008] As a further optimized solution of the present utility model, the supporting structure is bumps symmetrically provided on both sides of the adjusting hole. The preloading member includes a preloading cylinder, the position adjusting member includes an adjusting rod connected to the preloading cylinder, and a sleeve slidably connected to the adjusting rod. A receiving curved surface corresponding to the sleeve is provided on the top of the bump.

[0009] As a further optimized solution of the present utility model, a limiting block is provided on the side wall of the adjusting rod, and a sliding groove corresponding to the limiting block is provided inside the sleeve.

[0010] As a further optimized solution of the present utility model, a stop ring for stopping the tool bar is provided inside the housing.

[0011] As a further optimized solution of the present utility model, a joint threadedly connected to the adjusting rod is provided outside the preloading cylinder, and a groove corresponding to the joint is provided inside the stop ring.

[0012] As a further optimized solution of the present utility model, a slot corresponding to the preloading cylinder is provided inside the tool bar, and a through hole is provided at the bottom of the preloading cylinder.

[0013] As a further optimized solution of the present utility model, a clamping block is fixedly provided outside the tool bar, and a clamping groove corresponding to the clamping block is provided at the bottom of the housing.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1) When the tool shank is inserted into the tool holder, the preloading component abuts against the tool shank. After the tool shank is in place, the tool shank and the tool holder are connected by fasteners. The elastic component applies a pre-tightening force to the tool shank and the fasteners through the preloading component, making the connection between the tool shank and the tool holder more reliable, reducing the vibration generated when the tool processes the valve. When replacing the tool shank, the preloading component can be lifted by the position adjusting component to reduce the resistance when disassembling the fasteners and reduce the wear of the tool caused by replacing the tool shank;

[0016] 2) On the outer side of the preloading cylinder of the preloading component in the present utility model, an adjusting rod penetrating the side wall of the tool holder is provided. There are support structures on both sides of the upper part of the adjusting hole of the tool holder. Before installing or disassembling the tool shank, move the sleeve on the adjusting rod away from the tool holder. After pulling up the adjusting rod, then push the sleeve towards the tool holder so that the sleeve is suspended between the two support structures, which can maintain the upward pulling force on the preloading component and improve the convenience of subsequent disassembly and assembly of the tool shank;

[0017] 3) A slot corresponding to the preloading component is provided on the tool shank of the present utility model, saving the occupied space of the preloading component and the elastic component. When the tool holder is connected to the tool shank, the side wall of the tool shank is respectively in contact with the outer wall of the preloading component and the inner wall of the tool holder. When the stop ring in the tool holder abuts against the top of the tool holder, the tool shank and the tool holder are connected, further improving the reliability of the tool and facilitating the alignment of the tool shank and the tool holder when connecting the tool;

[0018] 4) The preloading cylinder of the preloading component in the present utility model is screwed to the adjusting rod of the position adjusting component through a joint. A groove corresponding to the joint is provided on the stop ring, making it convenient to assemble the preloading component into the tool holder. A through hole is opened at the bottom of the preloading cylinder of the preloading component. When cleaning the dust entering from the adjusting hole, it is not necessary to remove the preloading cylinder from the tool holder by disassembling the preloading component. The dirt can be discharged through the lower opening of the tool holder and the through hole of the preloading cylinder, facilitating the cleaning of the tool;

[0019] 5) A clamping block is provided on the outer side of the tool shank of the present utility model, and a clamping groove corresponding to the clamping block is provided on the tool holder. Through the limiting effect of the clamping groove and the clamping block, it is easier to align the tool holder and the tool shank. After connecting the tool holder and the tool shank, the tool holder can transmit the torque of the machine tool spindle to the tool shank through the clamping block to meet the requirements of the tool for the cutting ability, machining accuracy and efficiency of valve processing. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the present utility model;

[0021] Figure 2 is the sectional structural schematic diagram of the present utility model;

[0022] Figure 3 is Figure 2 the enlarged view of part A in

[0023] Figure 4 the exploded view of the present utility model.

[0024] In the figure: 1. Tool shank; 2. Tool bar; 3. Fastener; 4. Preloading component; 5. Elastic component; 6. Position adjusting component; 7. Support structure; 8. Block; 11. Housing; 12. Adjusting hole; 13. Stop ring; 14. Groove; 41. Preloading cylinder; 42. Connector; 61. Adjusting rod; 62. Sleeve; 63. Limit block; 64. Slide groove. Specific implementation mode

[0025] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation modes are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0026] Embodiment

[0027] As Figures 1-4 shown, a tool for machining a valve body includes a tool shank 1 and a tool bar 2, and a tool tip for machining the valve body is provided on the tool bar 2. A fastener 3 is provided on the tool shank 1, and the tool shank 1 is detachably connected to the tool bar 2 through the fastener 3. The fastener 3 is preferably a bolt and a nut, and assembly holes corresponding to the bolt are provided on both the tool shank 1 and the tool bar 2. This tool for machining a valve body is applicable to valve bodies made of hard materials. Since valve body materials are mostly made of stainless steel, carbon steel, etc., with a hard texture and high cutting accuracy requirements when machining valves, it is necessary to strengthen the connection between the tool shank 1 and the tool bar 2. In this embodiment, a preloading component 4 is provided inside the tool shank 1, an elastic component 5 is provided between the preloading component 4 and the tool shank 1, and a position adjusting component 6 penetrating the tool shank 1 is provided outside the preloading component 4. The position adjusting component 6 is detachably connected to the preloading component 4. In this embodiment, the position adjusting component 6 is screwed to the preloading component 4. The position adjusting component 6 is used to adjust the pre-tightening force of the preloading component 4 on the tool bar 2. The tool shank 1 includes a housing 11 with an open lower part, and strip-shaped adjusting holes 12 corresponding to the position adjusting component 6 are provided on the side wall of the housing 11. The upper and lower ends of the adjusting holes 12 are arc-shaped. The tool bar 2 can be a drill rod or the rod part of tools such as a milling cutter, a boring cutter, a reamer, etc. A titanium aluminum nitride coating is provided on the tool tip of the tool bar 2 to improve the wear resistance of the tool.

[0028] When assembling the cutting tool, insert the tool shank 2 into the inside of the tool holder 1 from the opening side of the housing 11. At the same time, the preloading member 4 in the tool holder 1 is embedded in the tool shank 2. After the tool shank 2 is in place, fix the tool shank 2 and the tool holder 1 together through the fastener 3. At this time, the tool shank 2 squeezes the elastic member 5 upward through the preloading cylinder 41. The elastic member 5 is compressed, and it applies a pre-tightening force to the tool shank 2 and the fastener 3 through the preloading member 4, making the connection between the tool shank 2 and the tool holder 1 more reliable, reducing the vibration during the operation of the cutting tool. The elastic member 5 is preferably a spring. The upper end of the spring abuts against the top of the inner wall of the housing 11, and the lower end of the spring abuts against the bottom wall of the preloading cylinder 41. The preloading cylinder 41 is sleeved outside the spring. When replacing the tool shank 2, the preloading member 4 can be lifted upward through the position adjusting member 6, thereby reducing the resistance when disassembling the fastener 3, and further reducing the wear of the cutting tool caused by replacing the tool shank 2.

[0029] Further, a support structure 7 for hanging the position adjusting member 6 is fixedly provided on the outside of the housing 11. The support structure 7 is a convex block symmetrically arranged on both sides of the adjusting hole 12. Specifically, please refer to Figure 2 and Figure 3 , the preloading member 4 includes a preloading cylinder 41, the position adjusting member 6 includes an adjusting rod 61 detachably connected to the preloading cylinder 41, and a sleeve 62 slidably connected to the adjusting rod 61. The top of the convex block is provided with a receiving curved surface corresponding to the sleeve 62. A limiting block 63 is provided on the side wall of the adjusting rod 61, and a sliding groove 64 corresponding to the limiting block 63 is provided inside the sleeve 62. Before installing or disassembling the tool shank 2, move the sleeve 62 on the adjusting rod 61 away from the tool holder 1. When the sleeve 62 slides relative to the adjusting rod 61, the limiting block 63 slides in the sliding groove 64. The sleeve 62 is limited by the cooperation of the limiting block 63 and the sliding groove 64. After pulling up the adjusting rod 61, then push the sleeve 62 towards the tool holder 1, so that the sleeve 62 is suspended between the two support structures 7, which can maintain the upward pulling force on the preloading member 4 and improve the convenience of subsequent disassembly and assembly of the tool shank 2.

[0030] Still further, as Figure 2 and Figure 3 described, a stop ring 13 for stopping the tool shank 2 is fixedly provided inside the housing 11. The stop ring 13 is used to restrict the upward movement of the tool shank 2. When the tool shank 2 abuts against the stop ring 13, the assembly holes of the tool holder 1 and the tool shank 2 are docked. A joint 42 threadedly connected to the adjusting rod 61 is fixedly provided on the outside of the preloading cylinder 41, and a groove 14 corresponding to the joint 42 is provided inside the stop ring 13. A slot corresponding to the preloading cylinder 41 is provided inside the tool shank 2, and a through hole is provided at the bottom of the preloading cylinder 41. When cleaning the dust entering from the adjusting hole 12, it is not necessary to remove the preloading cylinder 41 from the housing 11 by disassembling the preloading member 4. The dirt can be discharged through the opening at the lower part of the housing 11 and the through hole of the preloading cylinder 41, which is convenient for cleaning the cutting tool.

[0031] In addition, a clamping block 8 is fixedly arranged on the outer side of the tool shank 2, and a clamping groove corresponding to the clamping block 8 is arranged at the bottom of the housing 11. Through the limiting effect of the clamping groove and the clamping block 8, the alignment of the tool handle 1 and the tool shank 2 becomes easier. After connecting the tool handle 1 and the tool shank 2, the tool handle 1 can transmit the torque of the machine tool spindle to the tool shank 2 through the clamping block 8 to meet the requirements of the cutting ability, machining accuracy and efficiency of the tool for valve processing.

[0032] The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A cutting tool for valve body machining, comprising a tool shank (1) and a tool bar (2), and a cutting head for machining the valve body is provided on the tool bar (2). A fastener (3) is provided on the tool shank (1), and the tool shank (1) is detachably connected to the tool bar (2) through the fastener (3), characterized in that: Inside the tool shank (1), a preloading component (4) is provided. An elastic member (5) is provided between the preloading component (4) and the tool shank (1). And a position adjusting member (6) penetrating through the tool shank (1) is provided on the outer side of the preloading component (4). The position adjusting member (6) is used to adjust the pre-tightening force of the preloading component (4) on the tool bar (2).

2. The cutting tool for valve body machining according to claim 1, wherein: The tool shank (1) includes a housing (11). A strip-shaped adjusting hole (12) corresponding to the position adjusting member (6) is provided on the side wall of the housing (11). A support structure (7) for hanging the position adjusting member (6) is fixedly provided on the outer side of the housing (11).

3. The cutting tool for valve body machining according to claim 2, characterized in that: The support structure (7) is a convex block symmetrically arranged on both sides of the adjusting hole (12). The preloading component (4) includes a preloading cylinder (41). The position adjusting member (6) includes an adjusting rod (61) connected to the preloading cylinder (41), and a sleeve (62) slidably connected to the adjusting rod (61). A receiving curved surface corresponding to the sleeve (62) is provided on the top of the convex block.

4. The cutting tool for valve body machining according to claim 3, characterized in that: A limiting block (63) is provided on the side wall of the adjusting rod (61). A sliding groove (64) corresponding to the limiting block (63) is provided on the inner side of the sleeve (62).

5. The cutting tool for valve body machining according to claim 3, characterized in that: A stop ring (13) for stopping the tool bar (2) is provided inside the housing (11).

6. The cutting tool for valve body machining according to claim 5, characterized in that: A joint (42) threadedly connected to the adjusting rod (61) is provided on the outer side of the preloading cylinder (41). A groove (14) corresponding to the joint (42) is provided on the inner side of the stop ring (13).

7. The cutting tool for valve body machining according to claim 3, characterized in that: A slot corresponding to the preloading cylinder (41) is provided inside the tool bar (2). A through hole is provided at the bottom of the preloading cylinder (41).

8. The cutting tool for valve body machining according to claim 2, wherein: A clamping block (8) is fixedly provided on the outer side of the tool bar (2). A clamping groove corresponding to the clamping block (8) is provided at the bottom of the housing (11).

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