Quick cutter connecting structure

Abstract

The utility model provides a quick cutter connecting structure, which relates to the technical field of cutters, and comprises a cutter body, a cutter handle and a clamp spring type leaf spring, and cutter body salient points are arranged on the inner wall of an inner hole of the connecting end of the cutter body and the cutter handle; the connecting end of the cutter handle and the cutter body is provided with an entering face, a positioning groove, a clamping spring groove and a positioning hole, the clamping spring groove penetrates through the positioning groove, and the positioning hole is formed in the clamping spring groove; the snap spring type spring piece is provided with a buckle, a deformation area, a supporting area and a snap spring first protruding point. The snap spring groove is used for installing a snap spring type spring piece, and the supporting area is used for forming a deformation area; through the structural arrangement of the cutter body, the cutter handle and the snap spring type spring piece, all the structures are matched with one another to achieve accurate radial positioning and circumferential direction limiting, a stable and reliable corresponding torque transmission structure is formed, and the cutter has the advantages of being high in machining precision and installation precision, stable in rotation, large in torque transmission, high in rigidity and the like.

Description

Technical Field

[0001] The utility model relates to the technical field related to cutters, in particular to a quick connection structure for cutters. Background Art

[0002] Most connection methods between tools and tool handles require complicated assembly and disassembly steps, and the connection structure also needs to ensure good radial positioning and circumferential limiting effects, ensure the performance of torque transmission, and avoid safety hazards caused by reverse impact. The existing connection structure is difficult to achieve the above requirements. In response to the above defects, this application is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a tool quick connection structure, which has the technical advantages of easy disassembly and assembly, high installation precision, stable rotation, large torque transmission, and reduced safety hazards caused by reverse impact.

[0004] To solve the above problems, the utility model provides a quick connection structure for a cutting tool, comprising a cutting tool body, a cutting tool handle, and a retaining spring leaf, wherein a cutting tool body protrusion is provided on the inner wall of the inner hole of the connecting end of the cutting tool body and the cutting tool handle; an entry surface, a positioning groove, a retaining spring groove, and a positioning hole are provided at the connecting end of the cutting tool handle and the cutting tool body, the retaining spring groove is provided through the positioning groove, and the positioning hole is provided in the retaining spring groove; the retaining spring leaf is provided with a buckle, a deformation area, a support area, and a first retaining spring protrusion; the retaining spring groove is used to install the retaining spring leaf;

[0005] The support area is set to form a support with the retaining spring groove and then form a deformation area. The diameter at the entry surface position is smaller than the diameter at other positions, so that the blade protrusion can enter. The retaining spring groove is used to install the retaining spring sheet, the positioning groove is used to accommodate the blade protrusion, and the positioning hole is used to install the buckle to prevent the retaining spring sheet from moving in the circumferential direction; when the first protrusion of the retaining spring is squeezed by the protrusion of the blade body, the deformation area is deformed, and after the blade body is rotated to make the protrusion of the blade body enter the positioning groove, the deformation area rebounds and clamps the protrusion of the blade body, thereby limiting the movement of the blade body in the circumferential direction.

[0006] Optionally, by controlling the angles of the slopes on both sides of the first protrusion of the retaining spring, such as increasing the slope, the blade can obtain greater resistance to reverse inertial impact when power is lost.

[0007] According to one embodiment of the present invention, a second protrusion of the retaining spring is provided on the retaining spring sheet. The second protrusion of the retaining spring is used to support the inner wall of the blade body when subjected to reverse inertial impact to prevent jamming and avoid excessive retreat of the blade body when being removed, thereby blocking the protrusion and ensuring that the blade body can be easily removed.

[0008] Optionally, the extension length of the second protrusion of the clip on the clip spring sheet is greater than the length of the first protrusion of the clip, thereby achieving the effect of reliably resisting impact and blocking.

[0009] According to an embodiment of the present invention, at least two groups of buckles are provided, and the number of positioning holes is the same as the number of buckles.

[0010] According to an embodiment of the present invention, at least two groups of blade body protrusions are provided, which are symmetrically arranged, and the number of the positioning grooves is the same as the blade body protrusions.

[0011] According to an embodiment of the present invention, the deformation zone is provided with at least two sections, which are respectively located on both sides of the second protrusion of the clip.

[0012] Optionally, the entry surface is a plane or a curved surface.

[0013] According to an embodiment of the present invention, an inner hole is provided at the center of the end face of the tool handle for installing a spot drill, and a threaded hole is provided on the tool handle for installing a nut to lock the spot drill.

[0014] According to an embodiment of the present invention, a power connection end is provided on the knife handle.

[0015] Optionally, the power connection end is a triangular handle, a square handle or other handle types, which is used for connection with other mechanical equipment.

[0016] Optionally, the cutter body is provided with an annular cutting edge or other edge types.

[0017] The beneficial effect of the present invention is that, through the structural arrangement of the knife body, the knife handle and the retaining spring sheet, the various structures cooperate with each other to achieve relatively precise radial positioning and circumferential direction limitation, and form a stable and reliable corresponding structure for transmitting torque, which has the advantages of high processing precision, high installation precision, smooth rotation, large torque transmission and strong rigidity. The structure of the raised points on the retaining spring sheet can avoid safety hazards caused by reverse impact. Overall, this solution has the technical advantages of simple structure, cost reduction and efficiency improvement, easy disassembly and assembly, and high installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the retaining spring installed on the knife handle;

[0020] Figure 2 Schematic diagram of the cutter body structure;

[0021] Figure 3 Schematic diagram of the structure of the handle;

[0022] Figure 4 It is a structural diagram of a circlip spring leaf. DETAILED DESCRIPTION

[0023] The following description is intended only to disclose the present invention and to enable those skilled in the art to implement the present invention. The embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0024] Example 1:

[0025] A tool quick connection structure, such as Figure 1 、 Figure 2 、 Figure 4 , including a knife body 100, a knife handle 200 and a spring-type spring leaf 300.

[0026] An inner hole is provided on one side of the blade body 100, and an annular cutting edge 101 or other edge type is provided on the other side. The inner hole is used to connect with the blade handle 200, and the blade body protrusions 15 are pressed and formed in the inner hole. The blade body protrusions 15 are provided in two groups, which are generally symmetrically arranged.

[0027] The structure of the handle 200 is as follows: Figure 2 、 Figure 3 The connecting end of the shank 200 and the blade body 100 is provided with two entry surfaces 8, two positioning grooves 10 matching the blade body protrusions 15, a retaining spring groove 9 and two positioning holes 13. The entry surface 8 in this embodiment adopts a plane, and the diameter at the entry surface 8 is smaller than the diameter at other positions, so that the blade body protrusions 15 can enter and prevent interference with the blade body protrusions 15 when entering the blade body. A retaining spring groove 9 is provided in the center of the positioning groove 10, and the positioning hole 13 is provided in the retaining spring groove 9. The retaining spring groove 9 is used to install the retaining spring leaf 300, the positioning groove 10 is used to accommodate the blade body protrusions 15, and the positioning hole 13 is used to install the buckle 1 to prevent the retaining spring leaf 300 from moving in the circumferential direction.

[0028] like Figure 4 The spring sheet 300 is provided with a buckle 1, a deformation area, a support area 7, a first convex point 3 of the spring and a second convex point 4 of the spring. Two groups of deformation areas are provided, which are located on both sides of the second convex point 4 of the spring, and are corresponding to the number of convex points 15 of the blade body, namely deformation area 2 and deformation area 5. The number of buckles 1 can be increased to ensure reliability.

[0029] The position angle of the buckle 1 and the positioning hole 13 can be adjusted to ensure that the position of the first protrusion 3 of the spring is at the required position and that there is enough opening for the spring-type spring piece 300 to deform and enter the spring groove 9 with an appropriate amount of space.

[0030] Deformation zone 2 and deformation zone 5 can adjust the force required by the spring-type spring sheet 300 by changing the deformable amount of the deformation zone. The positions of the two support zones 7 can cooperate with the spring groove 9 to play a supporting role, ensuring that deformation zone 2 and deformation zone 5 can obtain appropriate deformation space.

[0031] When the shank 200 axially enters the blade body 100, the blade body protrusion 15 will squeeze the first protrusion 3 of the retaining spring and deform downward. The deformation zone 5 provides the required space for it. After rotating an angle in the circumferential direction, the blade body protrusion 15 enters the positioning groove 10, limiting the movement in the axial direction. The deformation zone loses the extrusion and rebounds, and the edge of the blade body protrusion 15 is stuck, thereby limiting the movement in the circumferential direction and completing the axial connection.

[0032] The angle of the slope on both sides of the first protrusion 3 of the retaining spring can also be controlled to provide the tool body with greater resistance to the reverse inertial impact when it loses power, thereby physically limiting the reverse inertial impact that occurs when the tool loses power, ensuring the connection stability between the two and the safety factor during use; and the first protrusion 3 of the retaining spring in this embodiment is easily accessible during connection and assembly.

[0033] The second protrusion 4 of the retaining spring can support the inner wall of the blade 100 when subjected to reverse inertial impact to prevent it from getting stuck. It can also block the protrusion 15 of the blade during the removal and retraction process to prevent excessive retraction, ensuring that the blade can be easily removed.

[0034] The spring-type spring piece 300 can also achieve changes in elasticity by changing its thickness. After the spring form is determined, it can be stamped and formed to achieve cost reduction and efficiency improvement.

[0035] The handle 200 is provided with a power connection end 12. In this embodiment, the power connection end 12 is a triangular handle for connection with other mechanical equipment.

[0036] Example 2:

[0037] On the basis of Example 1, an inner hole 14 is provided at the center of the end face of the tool handle 200 for installing a spot drill, and a threaded hole 11 is provided on the tool handle 200 for installing a nut to lock the spot drill.

[0038] Example 3:

[0039] On the basis of embodiment 1 or 2, in this embodiment, the extension length of the second protrusion 4 of the clip on the clip spring piece 300 is greater than the length of the first protrusion 3 of the clip, thereby achieving the effect of reliably resisting impact and blocking.

[0040] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations and modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A tool quick connection structure, characterized by: The invention comprises a knife body (100), a knife handle (200) and a spring-spring type leaf (300), wherein a knife body protrusion (15) is provided on the inner wall of the inner hole of the connection end between the knife body (100) and the knife handle (200); an entry surface (8), a positioning groove (10), a spring-spring type leaf (9) and a positioning hole (13) are provided at the connection end between the knife handle (200) and the knife body (100), wherein the spring-spring type leaf (300) is provided with a protrusion (15) on the inner wall of the inner hole of the connection end between the knife body (100) and the knife handle (200); wherein the spring-spring type leaf (300) is provided with a protrusion (15) on the inner wall of the inner hole of the connection end between the knife body (100) and the knife handle (200); wherein the spring-spring type leaf (300) is provided with a protrusion (15) on the inner wall of the inner hole of the connection end between the knife body (100) and the knife handle (200); wherein the spring-spring type leaf (300) is provided with a protrusion (15) on the inner wall of the inner hole of the connection end between the knife body (100) and the knife handle (200); ... A buckle (1), a deformation zone, a support zone (7) and a first protrusion of a retaining spring (3); the retaining spring groove (9) is used to install a retaining spring leaf (300), the support zone (7) is provided to form a deformation zone, the positioning groove (10) is used to accommodate a blade protrusion (15), the positioning hole (13) is used to install the buckle (1), and during the process of rotating the blade (100) so that the blade protrusion (15) enters the positioning groove (10), the deformation zone is compressed, deformed and rebounds, and the blade protrusion (15) is clamped in place by the first protrusion of the retaining spring (3).

2. The tool quick connection structure according to claim 1, characterized in that: The retaining spring sheet (300) is provided with a retaining spring second protrusion (4), and the retaining spring second protrusion (4) is used to support the inner wall of the cutter body when subjected to a reverse inertial impact, and to block the cutter body protrusion (15).

3. The tool quick connection structure according to claim 1 or 2, characterized in that: At least two groups of the buckles (1) are provided, and the number of the positioning holes (13) is the same as the number of the buckles (1).

4. The tool quick connection structure according to claim 1 or 2, characterized in that: At least two groups of the blade body protrusions (15) are provided, and the number of the positioning grooves (10) provided is the same as the blade body protrusions (15).

5. The tool quick connection structure according to claim 4, characterized in that: The deformation zone is provided with at least two sections.

6. The tool quick connection structure according to claim 1, characterized in that: The entry surface (8) is a plane.

7. The tool quick connection structure according to claim 1, characterized in that: An inner hole (14) is provided at the center of the end face of the tool handle (200) for installing a centering drill, and a threaded hole (11) is provided on the tool handle (200) for installing a nut to lock the centering drill.

8. The tool quick connection structure according to claim 1, characterized in that: The knife handle (200) is provided with a power connection end (12).

9. The tool quick connection structure according to claim 8, characterized in that: The power connection end (12) is a triangular handle.

10. The tool quick connection structure according to any one of claims 7 to 9, characterized in that: An annular cutting edge (101) is provided on the cutter body (100).

Images