Cutter with replaceable cutter head

Abstract

The cutter with the replaceable cutter head comprises a cutter handle and the cutter head, a transmission groove is formed in the cutter handle, a transmission worm gear is rotationally connected to the inner wall of the transmission groove, a transmission worm is connected to one side of the transmission worm gear in a meshed mode, a clamping ring is fixedly connected to the lower portion of the transmission groove, and a contraction groove is formed in the side surface of the clamping ring. Telescopic springs are fixedly connected into the telescopic grooves, telescopic inclined plates are fixedly connected to the tail ends of the telescopic springs, extrusion rollers are rotationally installed on the surfaces of the transmission worm wheels, moving grooves are formed in the bottom faces of the telescopic grooves, and positioning blocks are fixedly connected to the tail ends of the supporting rods. The device has the advantages that the transmission worm is driven by the transmission worm gear to rotate, the extrusion roller extrudes the shrinkage inclined plate after moving, the shrinkage inclined plate drives the positioning block to be connected with the limiting groove in the surface of the tool bit in a matched mode after being extruded and shrunk, and then the positioning column is matched with the positioning groove; stable installation and connection of the cutter handle and the cutter head are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining tools, in particular to a tool with a replaceable tool head. Background Art

[0002] In the field of mechanical processing, the tool is a tool that directly acts on the workpiece to remove materials. Its performance and precision have a crucial impact on the processing quality. Traditional machining tools often use an integrated processing design for the tool head and tool handle. This design usually requires the entire tool to be replaced when the tool head is worn or damaged, which undoubtedly increases production costs and material consumption.

[0003] In recent years, with the rapid development of the manufacturing industry, higher requirements have been put forward for the efficiency of tool use and cost control. In order to solve the above problems, some tools with replaceable tool heads have appeared on the market. This type of tool realizes the separate replacement of the tool head by designing the tool head and the tool handle as a detachable structure, thereby reducing production costs and material consumption. However, most of the replaceable tool heads on the market currently use threaded connections for the connection between the tool head and the tool handle. Although threaded connections have the advantages of simple structure and easy implementation, there are also some problems during use. Due to the influence of factors such as processing accuracy and use environment, threaded connections are prone to loosening after long-term use, causing the tool to shake or deviate during the processing process, seriously affecting the processing accuracy and processing quality. For the problems in the relevant technology, no effective solution has been proposed yet. Therefore, it is necessary to propose a tool with a replaceable tool head to solve the above-mentioned problems. Utility Model Content

[0004] In view of the problems in the related technology, the utility model provides a tool with a replaceable tool head to overcome the above technical problems existing in the existing related technology.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] A tool with a replaceable tool head comprises a tool handle and a tool head, a transmission groove is provided inside the tool handle, a transmission worm wheel is rotatably connected to the inner wall of the transmission groove, a transmission worm is meshingly connected to one side of the transmission worm wheel, a clamping ring is fixedly connected to the lower part of the transmission groove, a contraction groove is provided on the side surface of the clamping ring, a telescopic spring is fixedly connected to the inside of the contraction groove, a contraction inclined plate is fixedly connected to the end of the telescopic spring, an arc-shaped limit plate is fixedly connected to one side of the contraction inclined plate, the contraction inclined plate and the arc-shaped limit plate are both slidably installed in the contraction groove, an extrusion groove is provided between the transmission groove and the clamping ring, an extrusion roller is rotatably installed on the surface of the transmission worm wheel, a movable groove is provided on the bottom surface of the contraction groove, a support rod is fixedly connected to the bottom of the contraction inclined plate, and a positioning block is fixedly connected to the end of the support rod.

[0007] Furthermore, in order to achieve the matching connection between the positioning block on the shank and the surface of the cutter head, cutting edges are provided on both side surfaces of the cutter head, a mounting ring is fixedly connected to the top of the cutter head, a limiting groove is provided on the surface of the mounting ring, a positioning column is fixedly connected to the top of the mounting ring, and the positioning block matches the limiting groove.

[0008] Furthermore, in order to facilitate the rotation of the transmission worm wheel and the transmission worm, a support plate is fixedly connected to one side of the inner wall of the transmission groove, one end of the transmission worm is rotatably mounted on the surface of the support plate, and the other end is rotatably passed through the tool handle and fixedly connected to a twisting rod.

[0009] Furthermore, in order to realize that the extrusion roller can roll and extrude the contraction inclined plate after moving, the end of the extrusion roller passes through the extrusion groove and is rollably mounted on one side of the contraction inclined plate.

[0010] Furthermore, in order to improve the stability of the connection between the tool handle and the tool head, a positioning groove is provided on the bottom surface of the clamping ring, and the positioning column cooperates with the positioning groove.

[0011] Furthermore, in order to prevent the moving roller from falling off the surface of the arc-shaped limiting plate, a blocking plate is fixedly connected to one end of the arc-shaped limiting plate.

[0012] Furthermore, in order to facilitate installation of the tool, a clamping plane is provided on the side surface of the tool handle.

[0013] The beneficial effects of the utility model are as follows: the positioning column on the cutter head is slidably installed in the positioning groove of the clamping ring at the bottom of the knife handle, so that the knife handle and the cutter head are connected to each other, and the transmission worm is driven to rotate by rotating the transmission worm, so that the transmission worm wheel drives the extrusion roller to move in the extrusion groove, and squeezes the contraction inclined plate and the telescopic spring, so that the contraction inclined plate drives the arc-shaped limit plate, the support rod and the positioning block to move toward the center of the clamping ring; when the extrusion roller moves to the surface of the arc-shaped limit plate, the contraction inclined plate drives the positioning block to move into the limit groove on the surface of the mounting ring at the top of the cutter head, so that the cutter head and the cutter handle are fixedly installed; the cutter head and the cutter handle can be disassembled by rotating the transmission worm in the reverse direction; compared with traditional tools with replaceable cutter heads, this connection method prevents loosening through the self-locking property of the reverse transmission of the worm gear, is convenient and reliable, and does not require the aid of other operating tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1It is a schematic diagram of the surface structure of a tool with a replaceable tool head according to an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the surface structure of a cutter head in a tool with a replaceable cutter head according to an embodiment of the utility model;

[0017] Figure 3 A bottom view of a tool handle in a tool with a replaceable tool head according to an embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of a transmission groove in a tool with a replaceable tool head according to an embodiment of the utility model;

[0019] Figure 5 It is a bottom cross-sectional view of a clamping ring in a tool with a replaceable tool head according to an embodiment of the utility model.

[0020] In the figure:

[0021] 1. Tool handle; 2. Tool head; 3. Transmission groove; 4. Transmission worm wheel; 5. Transmission worm; 6. Clamping ring; 7. Contraction groove; 8. Telescopic spring; 9. Contraction inclined plate; 10. Arc limit plate; 11. Extrusion groove; 12. Extrusion roller; 13. Moving groove; 14. Support rod; 15. Positioning block; 16. Cutting edge; 17. Mounting ring; 18. Limiting groove; 19. Positioning column; 20. Support plate; 21. Twist rod; 22. Positioning groove; 23. Blocking plate; 24. Clamping plane. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] According to an embodiment of the utility model, a cutting tool with a replaceable cutting head is provided.

[0024] Embodiment 1:

[0025] like Figure 1-Figure 4As shown, a tool with a replaceable tool head according to an embodiment of the utility model comprises a tool handle 1 made of alloy steel and a tool head 2 made of cemented carbide, a transmission groove 3 is opened inside the tool handle 1, a transmission worm wheel 4 is rotatably connected to the inner wall of the transmission groove 3, a transmission worm 5 is meshingly connected to one side of the transmission worm wheel 4, a clamping ring 6 is fixedly connected below the transmission groove 3, two pairs of contraction grooves 7 are opened on the side surface of the clamping ring 6, and the angle between each pair of contraction grooves 7 on the surface of the clamping ring 6 is ninety degrees; a telescopic spring 8 is fixedly connected to the inner surface of the contraction groove 7, a contraction inclined plate 9 is fixedly connected to the end of the telescopic spring 8, an arc-shaped limit plate 10 is fixedly connected to one side of the contraction inclined plate 9, and the contraction inclined plate 9 and the arc-shaped limit plate 10 are both slidably arranged It is installed in the contraction groove 7, and a circular extrusion groove 11 is opened between the transmission groove 3 and the clamping ring 6. An extrusion roller 12 is rotatably installed on the surface of the transmission worm wheel 4, and the end of the extrusion roller 12 passes through the extrusion groove 11 and is rollingly installed on one side of the contraction inclined plate 9; a moving groove 13 is opened on the bottom surface of the contraction groove 7, and a support rod 14 is fixedly connected to the bottom of the contraction inclined plate 9, and a positioning block 15 is fixedly connected to the end of the support rod 14. The transmission worm 5 is driven to rotate the transmission worm wheel 4, so that the transmission worm wheel 4 drives the extrusion roller 12 to move in the extrusion groove 11, and squeezes the contraction inclined plate 9 and the telescopic spring 8, so that the contraction inclined plate 9 drives the arc-shaped limit plate 10, the support rod 14 and the positioning block 15 to move toward the center of the clamping ring 6.

[0026] like Figure 1-Figure 4 As shown, cutting edges 16 are provided on both side surfaces of the cutter head 2, a mounting ring 17 is fixedly connected to the top of the cutter head 2, two pairs of limiting grooves 18 are provided on the surface of the mounting ring 17, and the angle of each pair of limiting grooves 18 on the surface of the mounting ring 17 is ninety degrees; a positioning column 19 is fixedly connected to the top of the mounting ring 17, and the positioning block 15 cooperates with the limiting groove 18. When the extrusion roller 12 moves to the surface of the arc-shaped limiting plate 10, the contraction inclined plate 9 drives the positioning block 15 to move into the limiting groove 18 on the surface of the mounting ring 17 at the top of the cutter head 2, so as to realize the fixed installation between the cutter head 2 and the handle 1; a support plate 2 is fixedly connected to one side of the inner wall of the transmission groove 3 0, one end of the transmission worm 5 is rotatably installed on the surface of the support plate 20, and the other end is rotatably passed through the tool handle 1 and fixedly connected with a twisting rod 21, which is used to facilitate the rotation of the transmission worm 5 and the transmission worm wheel 4; a positioning groove 22 is opened on the bottom surface of the tightening ring, and the positioning column 19 cooperates with the positioning groove 22 to achieve a stable connection between the tool handle 1 and the cutter head 2; one end of the arc-shaped limit plate 10 is fixedly connected with a blocking plate 23, which is used to prevent the moving roller from falling off when moving on the surface of the arc-shaped limit plate 10; a clamping plane 24 is opened on the side surface of the tool handle 1, which facilitates the processing and installation of the entire tool after the tool handle 1 and the cutter head 2 are fixedly installed.

[0027] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0028] In summary, with the aid of the above technical solution of the utility model, the locating column 19 on the cutter head 2 is slidably installed in the locating groove 22 of the clamping ring 6 at the bottom of the cutter handle 1, so as to realize the preliminary connection between the cutter handle 1 and the cutter head 2, and the transmission worm 5 is rotated by twisting the rod 21, so that the transmission worm gear 4 is driven to rotate, and then the transmission worm gear 4 drives the extrusion roller 12 to move along the extrusion groove 11, and squeezes the contraction inclined plate 9 and the telescopic spring 8, so that the contraction inclined plate 9 drives the arc-shaped limit plate 10, the support rod 14 and the positioning block 15 along the contraction groove 7 to the clamping ring 6 When the extrusion roller 12 moves to the blocking plate 23 on the surface of the arc-shaped limiting plate 10, the contraction inclined plate 9 drives the positioning block 15 to move into the limiting groove 18 on the surface of the mounting ring 17 at the top of the cutter head 2, and the positioning block 15 at the bottom of the support rod 14 limits and clamps the cutter head 2 to achieve fixed installation between the cutter head 2 and the handle 1. When the cutter head 2 needs to be disassembled, after rotating the transmission worm 5 in the reverse direction, the positioning block 15 can slide out of the limiting groove 18 through the elastic force of the telescopic spring 8 in the contraction groove 7, and the cutter head 2 and the handle 1 can be disassembled.

[0029] 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 in the protection scope of the present invention.

Claims

1. A tool with a replaceable tool head, characterized in that: The knife handle (1) comprises a knife head (2), wherein a transmission groove (3) is provided inside the knife handle (1), a transmission worm wheel (4) is rotatably connected to the inner wall of the transmission groove (3), a transmission worm (5) is meshingly connected to one side of the transmission worm wheel (4), a clamping ring (6) is fixedly connected below the transmission groove (3), a contraction groove (7) is provided on the side surface of the clamping ring (6), a telescopic spring (8) is fixedly connected inside the contraction groove (7), a contraction inclined plate (9) is fixedly connected to the end of the telescopic spring (8), and the contraction spring (8) is fixedly connected to the contraction inclined plate (9). An arc-shaped limit plate (10) is fixedly connected to one side of the inclined plate (9); the contraction inclined plate (9) and the arc-shaped limit plate (10) are both slidably installed in the contraction groove (7); an extrusion groove (11) is provided between the transmission groove (3) and the clamping ring (6); an extrusion roller (12) is rotatably installed on the surface of the transmission worm gear (4); a movable groove (13) is provided on the bottom surface of the contraction groove (7); a support rod (14) is fixedly connected to the bottom of the contraction inclined plate (9); and a positioning block (15) is fixedly connected to the end of the support rod (14).

2. A tool with a replaceable tool head according to claim 1, characterized in that: The surfaces of both sides of the cutter head (2) are provided with cutting edges (16); the top of the cutter head (2) is fixedly connected with a mounting ring (17); the surface of the mounting ring (17) is provided with a limiting groove (18); the top of the mounting ring (17) is fixedly connected with a positioning column (19); and the positioning block (15) cooperates with the limiting groove (18).

3. A tool with a replaceable tool head according to claim 1, characterized in that: A support plate (20) is fixedly connected to one side of the inner wall of the transmission groove (3); one end of the transmission worm (5) is rotatably mounted on the surface of the support plate (20), and the other end is rotatably passed through the tool handle (1) and fixedly connected to a twisting rod (21).

4. A tool with a replaceable tool head according to claim 1, characterized in that: The end of the extrusion roller (12) passes through the extrusion groove (11) and is rollingly mounted on one side of the contraction inclined plate (9).

5. The tool with a replaceable tool head according to claim 2, characterized in that: The bottom surface of the clamping ring (6) is provided with a positioning groove (22), and the positioning column (19) matches the positioning groove (22).

6. A tool with a replaceable tool head according to claim 1, characterized in that: One end of the arc-shaped limiting plate (10) is fixedly connected to a blocking plate (23).

7. A tool with a replaceable tool head according to claim 1, characterized in that: A clamping plane (24) is provided on the side surface of the knife handle (1).

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