Novel steel handle for clamping cutter
The new steel handle design with a positioning column and pressure piece addresses tool instability issues, enhancing precision and efficiency by ensuring secure tool alignment and reducing deformation.
Patent Information
- Application Number
- CN202421039661.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The clamping structure of traditional tools is simple, resulting in insufficient concentricity and accuracy, which is prone to deformation and offset, affecting processing accuracy and efficiency, and increasing production costs.
The new steel handle structure is adopted, including positioning columns, air-avoiding grooves, pressing tool parts and compression screws. Through the design of positioning grooves and counters, the tool is stabilized and fixed position is locked by compression screws.
It improves the clamping stability and concentricity of the tool, avoids deviation, extends service life, improves processing efficiency, and reduces production costs.
Smart Images
Figure CN223098681U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tool clamping tools, in particular to a new steel shank for clamping tools. Background Art
[0002] The structure of the traditional tool holder for clamping tools is simple, without grooves, counterbores, relief grooves, and there is no structure such as a tool pressing piece to cooperate with pressing the tool. It directly uses the method of pressing with screws (nuts) and screw washers to fix the tool on the tool holder. The concentricity and precision are insufficient, which easily leads to deformation of the tool holder, insufficient clamping force, poor stability. After being installed on the machine tool spindle, the tool is prone to shift during the working process, affecting the machining accuracy, and even scrapping may occur, seriously affecting the machining efficiency and quality, and increasing the production cost of the enterprise. Content of the Utility Model
[0003] To solve the above problems, the utility model provides a new steel shank for clamping tools with strong clamping force, good stability, which can reduce the production cost of enterprises, improve work efficiency, and can adapt to different tools.
[0004] To achieve the above object, the technical solution adopted by the utility model is as follows: It includes a shank, the shank includes a connecting portion connected to the machine tool spindle and a tool mounting portion for mounting the tool. One end of the tool mounting portion is provided with a positioning post, the end face of the positioning post is provided with a connecting hole, a relief groove is arranged on the outer side of the positioning post, the tool mounting portion is detachably connected with a tool pressing piece for pressing the tool, the inner end face of the tool pressing piece is provided with a positioning groove corresponding to the positioning post for connection, the outer end face of the tool pressing piece is provided with a counterbore, and a through hole is axially arranged inside the tool pressing piece, and the through hole communicates with the counterbore.
[0005] Further, the cross-sectional shape of the connecting hole is T-shaped, including a first limiting groove and a first internal thread hole. The first limiting groove is arranged on the end face of the positioning post, and the first internal thread hole is arranged behind the first limiting groove.
[0006] Further, the tool pressing piece is in a "convex" shape, an inserting post corresponding to the limiting groove is convexly arranged on the inner end face of the tool pressing piece, and the positioning groove is wound around the outer peripheral side of the inserting post.
[0007] Further, it also includes a pressing screw. After the tool pressing piece is installed on the tool mounting portion, the pressing screw passes through the tool pressing piece and is threadedly connected with the shank, so as to fix the relative mounting position of the tool pressing piece on the shank.
[0008] Further, the cross-sectional shape of the connecting hole is Y-shaped, including a second limiting groove and a second internal thread hole. The second limiting groove is arranged on the end face of the positioning post, and the second internal thread hole is arranged behind the second limiting groove.
[0009] Furthermore, the counterbore of the cutter pressing part is "V"-shaped, and its inclination angle is the same as that of the second limiting groove.
[0010] Furthermore, the cross-sectional shape of the cutter mounting part is T-shaped. The head of the cutter mounting part includes a cutter pressing surface, on which a third positioning post and a third clearance groove are provided. The third clearance groove is arranged outside the third positioning post. The main part of the cutter mounting part is arranged behind the third positioning post, and its outer surface is provided with an external thread.
[0011] Furthermore, a groove is provided between the third positioning post and the main part.
[0012] Furthermore, the through hole of the cutter pressing part is provided with an internal thread.
[0013] Furthermore, a keyway is provided on the side surface of the positioning post, and an external thread is provided at the front end of the positioning post.
[0014] The beneficial effects of the present utility model are as follows: The present utility model uses the cutter pressing part and the shaft handle for positioning and installation, fixes the cutter between the cutter pressing part and the shaft handle, and then uses the compression screw to lock and fix the relative positions of the cutter pressing part, the cutter, and the shaft handle. The present utility model adopts an innovative structure, has a strong pressing force on the cutter, effectively avoids adverse effects such as cutter offset and loosening during the working process, has high clamping stability, improves the concentricity and precision, enhances the pressure resistance and fastening performance, is not easily deformed, has a long service life, and effectively improves the overall processing efficiency. Description of the Drawings
[0015] Figure 1 is the cross-sectional view of Embodiment 1.
[0016] Figure 2 is Figure 1 the first shaft handle cross-sectional view of
[0017] Figure 3 is Figure 1 the first cutter pressing part cross-sectional view of
[0018] Figure 4 is Figure 1 the another structure cross-sectional view of the first cutter pressing part of
[0019] Figure 5 is the cross-sectional view of Embodiment 2.
[0020] Figure 6 is Figure 5 the second shaft handle cross-sectional view of
[0021] Figure 7 is Figure 5 the second cutter pressing part cross-sectional view of
[0022] Figure 8 is the cross-sectional view of Embodiment 3.
[0023] Figure 9 is Figure 8 the sectional view of the third shaft handle.
[0024] Figure 10 is Figure 8 the sectional view of the third tool-holding member.
[0025] Figure 11 is the sectional view of the fourth embodiment.
[0026] Figure 12 is Figure 11 the sectional view of the fourth shaft handle.
[0027] Figure 13 is Figure 11 the sectional view of the gasket.
[0028] Figure 14 is Figure 11 the sectional view of the fourth tool-holding member.
[0029] Figure 15 is the sectional view of the key pin.
[0030] Figure 16 is Figure 11 the sectional view of another structure of the fourth shaft handle.
[0031] Explanation of reference numerals:
[0032] The first shaft handle 100; the first tool-holding part 110; the first positioning post 111; the first connecting hole 112; the first limiting groove 1121; the first internal threaded hole 1122; the first clearance groove 113; the first connecting part 120; the first tool-holding member 200; the first positioning groove 210; the first tool-holding end 220; the first plug post 230; the first counterbore 240; the first through hole 250; the first pressing screw 300;
[0033] The second shaft handle 400; the second tool-holding part 410; the second positioning post 411; the second connecting hole 412; the second limiting groove 4121; the second internal threaded hole 4122; the second clearance groove 413; the second connecting part 420; the second tool-holding member 500; the second counterbore 510; the second through hole 520; the second tool-holding end 530; the second pressing screw 600;
[0034] The third shaft handle 700; the third tool-holding part 710; the third positioning post 711; the tool-holding surface 712; the third clearance groove 713; the groove 714; the head 715; the main body part 716; the third connecting part 720; the third tool-holding member 800; the third counterbore 810; the third internal threaded hole 820; the third tool-holding end 830;
[0035] Fourth shaft handle 900; Fourth tool mounting part 910; Fourth positioning post 911; Fourth tool pressing surface 912; Fourth clearance groove 913; First keyway 914; External thread 915; Fourth connecting part 920; Gasket 1000; Second keyway 1010; Fourth tool pressing piece 1100; Key pin 1200. Detailed implementation mode
[0036] Embodiment 1
[0037] Please refer to Figure 1-3 As shown in the figure, this embodiment relates to a new type of steel handle for clamping a tool, including a first shaft handle 100 and a first tool pressing piece 200, and the first tool pressing piece 200 is detachably mounted on the first shaft handle 100.
[0038] Furthermore, the first shaft handle 100 includes a first connecting part 120 and a first tool mounting part 110. The first connecting part 120 is used to connect with the machine tool spindle. The end face of the first tool mounting part 110 is provided with an outwardly protruding first positioning post 111. The middle of the end face of the first positioning post 111 is provided with a first connecting hole 112. The cross-sectional shape of the first connecting hole 112 is T-shaped, including a first limiting groove 1121 and a first internal thread hole 1122. The first limiting groove 1121 is provided on the end face of the first positioning post 111, and the first internal thread hole 1122 is provided behind the first limiting groove 1121. A circle of first clearance grooves 113 is provided on the outside of the first positioning post 111.
[0039] Furthermore, the inner end face of the first tool pressing piece 200 is provided with a first positioning groove 210 and an outwardly protruding first insertion post 230. The first positioning groove 210 is arranged in a ring on the outside of the first insertion post 230. The first positioning groove 210 is correspondingly connected with the first positioning post 111, and the first insertion post 230 is correspondingly connected with the first limiting groove 1121. After the tool is installed on the first positioning post 111, the first tool pressing piece 200 is correspondingly installed by the first positioning groove 210 corresponding to the connection with the first positioning post 111 and the first insertion post 230 corresponding to the connection with the first limiting groove 1121, so that the tool can be fixed between the first tool pressing piece 200 and the first tool mounting part 110.
[0040] Furthermore, the outer end face of the first tool pressing piece 200 is provided with a first counterbore 240. The first tool pressing piece 200 is also axially provided with a first through hole 250, and the first through hole 250 is communicated with the first counterbore 240. After the tool is fixed between the first tool pressing piece 200 and the first tool mounting part 110, the first pressing screw 300 passes through the first counterbore 240 and the first through hole 250 and is screwed into the first internal thread hole 1122. The front end of the first pressing screw 300 presses in the first counterbore 240, so as to fix and press the position of the tool. The first counterbore 240 serves to hide the first pressing screw 300 and prevent the protrusion of the first pressing screw 300 from affecting the operation of other components.
[0041] Further, a first knife pressing end 220 is provided at the edge of the first knife pressing member 200. The first knife pressing end 220 can play a role in pressing the tool tightly and clamping it without a gap, that is, it can clamp thin tools.
[0042] As Figure 4 shown, the first knife pressing member 200 can not only adopt the Figure 3 structure shown, but also adopt the following structure: remove the positioning groove 210 of the first knife pressing member 200, reduce the thickness of the first knife pressing end 220, which can effectively reduce the interference with other parts. By adopting this structure, thicker tools can be adapted. When the thickness of the tool is greater than the length of the first positioning post 111, the Figure 4 first knife pressing member 200 can still cooperate with the first tool mounting part 110 to clamp the tool tightly.
[0043] First, pass the tool through the first positioning post 111 and install it on the first tool mounting part 110, then install the first knife pressing member 200 correspondingly, press the tool on the first tool mounting part 110, and finally use the first pressing screw 300 to lock and fix the position of the first knife pressing member 200, thereby pressing and fixing the position of the tool tightly to prevent the tool from shifting or shaking.
[0044] In this embodiment, the first knife pressing member 200 and the first pressing screw 300 are used to fix and press the tool tightly on the first shaft handle 100. Compared with the traditional structure of using screws and gaskets to press the tool, the clamping and pressing stability is better, the pressing force is large. During the working process, the tool is not likely to shift or shake, and the tool is not likely to deform, effectively improving the service life of the tool and the overall processing efficiency. By replacing the knife pressing members with different thicknesses and adjusting the screwing distance of the first pressing screw 300, this embodiment can be adapted to install tools with different thicknesses and specifications, and has a wide applicability.
[0045] Embodiment 2
[0046] Please refer to Figure 5-7 shown. This embodiment is a variant of Embodiment 1. The difference lies in that it includes a second shaft handle 400 and a second knife pressing member 500. The second shaft handle 400 includes a second tool mounting part 410 and a second connecting part 420. The second connecting part 420 is also used to connect with the machine tool spindle.
[0047] Further, a second positioning post 411 and a second clearance groove 413 are provided on the end face of the second tool mounting part 410. The second clearance groove 413 is annularly arranged outside the second positioning post 411. The second positioning post 411 is provided with a second connecting hole 412. The cross-sectional shape of the second connecting hole 412 is Y-shaped, which includes a second limiting groove 4121 and a second internal thread hole 4122. The second limiting groove 4121 is provided on the end face of the second positioning post 411, and the second internal thread hole 4122 is provided behind the second limiting groove 4121.
[0048] Furthermore, a second counterbore 510 is provided on the outer end surface of the second cutter pressing member 500. The second counterbore 510 is in a "V" shape, and its inclination degree is the same as that of the second connecting hole 412. A second through hole 520 is axially provided inside the second cutter pressing member 500. The second through hole 520 communicates with the second counterbore 510. A second cutter pressing end 530 is provided on the edge of the second cutter pressing member 500.
[0049] The cutter is installed on the second cutter mounting portion 410 through the second positioning post 411. The second cutter pressing member 500 is correspondingly installed to press the cutter on the second cutter mounting portion 410. The second pressing screw 600 passes through the second counterbore 510 and the second through hole 520, and is threadedly connected to the second internal thread hole 4122, thereby fixing and pressing the position of the cutter.
[0050] Compared with the first embodiment, this embodiment simplifies the structure, reduces the manufacturing cost, and can achieve the effects that the cutter is not easily offset during the processing and has good clamping stability.
[0051] Embodiment Three
[0052] Please refer to Figure 8-10 As shown, this embodiment is a variant of the first embodiment. The differences are as follows: It includes a third shaft handle 700 and a third cutter pressing member 800. The third shaft handle 700 includes a third cutter mounting portion 710 and a third connecting portion 720. The third connecting portion 720 is also used to connect to the machine tool spindle.
[0053] Furthermore, the cross-sectional shape of the third cutter mounting portion 710 is T-shaped. Its head 715 includes a cutter pressing surface 712 and a third positioning post 711. The third positioning post 711 is provided on the inner end surface of the cutter pressing surface 712. A third clearance groove 713 is also provided on the inner end surface of the cutter pressing surface 712. The third clearance groove 713 is annularly provided outside the third positioning post 711. The outer surface of the main body portion 716 of the third cutter mounting portion 710 is provided with an external thread, and a groove 714 is provided between it and the third positioning post 711.
[0054] Furthermore, the cross-sectional shape of the third cutter pressing member 800 is "convex", which is more convenient for installation. It is provided with a third counterbore 810 and a third internal thread hole 820. The third counterbore 810 corresponds to the third positioning post 711. Through the corresponding connection of the third counterbore 810 and the third positioning post 711 and the threaded connection of the third internal thread hole 820 and the main body portion 716, the third cutter pressing member 800 is detachably installed on the third cutter mounting portion 710. A third cutter pressing end 830 is provided on the edge of the third cutter pressing member 800. First, the cutter is installed on the third cutter mounting portion 710 through the third positioning post 711, and then the third cutter pressing member 800 is correspondingly inserted on the third cutter mounting portion 710 and tightened, so as to fix the position of the cutter.
[0055] This embodiment simplifies the structure, eliminates the need to use clamping screws for clamping and fixing, is more convenient to operate, has a large clamping force, high clamping stability, and the tool is not prone to deviation and shaking.
[0056] Embodiment 4
[0057] As Figure 11-16 shown, this embodiment is a variant of Embodiment 1, and the differences are as follows: it includes a fourth shaft handle 900, a fourth tool pressing member 1100, shims 1000 with different thicknesses, and a key pin 1200.
[0058] Furthermore, the fourth shaft handle 900 includes a fourth tool mounting portion 910 and a fourth connecting portion 920, and the fourth connecting portion 920 is also used to connect to the machine tool spindle.
[0059] Furthermore, the fourth tool mounting portion 910 includes a fourth tool pressing surface 912 and a fourth positioning post 911. The width of the fourth tool pressing surface 912 is greater than the diameter of the fourth positioning post 911. The fourth positioning post 911 is provided at the axis center of the fourth tool pressing surface 912. A fourth clearance groove 913 is provided at the end surface of the fourth tool pressing surface 912. The fourth clearance groove 913 is provided outside the fourth positioning post 911. An external thread 915 is provided at the front end of the fourth positioning post 911, and a first key groove 914 is provided on the side surface of the fourth positioning post 911.
[0060] The width of the fourth connecting portion 920 can be equal to the width of the fourth tool pressing surface 912 or less than the fourth tool pressing surface 912, so as to adapt to different machine tools.
[0061] Furthermore, it also includes a shim 1000, and a second key groove 1010 is provided on the inner side wall of the shim 1000. The installation space of the tool is controlled by adding or subtracting shims 1000 with different thicknesses.
[0062] Furthermore, the cross-section of the fourth tool pressing member 1100 is in a "convex" shape, which is more convenient for installation, and an internal thread is provided on its inner side wall.
[0063] Install the key pin 1200 in the first key groove 914, then pass the tool and the shim 1000 through the fourth positioning post 911. When the key pin 1200 is stuck in the first key groove 914 and the second key groove 1010, the shim 1000 and the tool cannot rotate on the fourth positioning post 911. Finally, the fourth tool pressing member 1100 is threadedly connected to the external thread 915 of the fourth positioning post 911, and the tool is fixed and pressed on the fourth tool mounting portion 910.
[0064] This embodiment can fix and press the position of the tool by using the fourth tool pressing member 1100, and use the key pin to limit the rotation of the shim 1000 and the tool, which can reduce the wear of the tool, better protect the tool, has a large pressing force, and good clamping stability. This embodiment can install large tools, or install multiple and multiple layers of tools at the same time to improve the processing efficiency.
[0065] The above embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those skilled in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.
Claims
1. A new steel shank for clamping a cutting tool, characterized in that: It includes a shaft handle, the shaft handle includes a connecting portion connected to the machine tool spindle and a tool mounting portion for mounting a tool. A positioning post is provided at one end of the tool mounting portion. A connecting hole is provided on the end face of the positioning post. A clearance groove is provided around the outer side of the positioning post. The tool mounting portion is detachably connected with a tool pressing member for pressing the tool. A positioning groove corresponding to the positioning post is provided on the inner end face of the tool pressing member. A counterbore is provided on the outer end face of the tool pressing member. A through hole is axially provided inside the tool pressing member, and the through hole communicates with the counterbore.
2. The novel steel handle for clamping a tool according to claim 1, wherein: The cross-sectional shape of the connecting hole is T-shaped, including a first limiting groove and a first internal thread hole. The first limiting groove is provided on the end face of the positioning post, and the first internal thread hole is provided behind the first limiting groove.
3. The novel steel handle for clamping a tool according to claim 2, characterized in that: The tool pressing member is in a "convex" shape. An insertion post corresponding to the limiting groove is convexly provided on the inner end face of the tool pressing member, and the positioning groove is wound around the outer peripheral side of the insertion post.
4. A novel steel handle for clamping a cutting tool according to claim 3, characterized in that: It further includes a pressing screw. After the tool pressing member is installed on the tool mounting portion, the pressing screw passes through the tool pressing member and is threadedly connected to the shaft handle, so as to fix the relative mounting position of the tool pressing member on the shaft handle.
5. A novel steel handle for clamping a cutting tool according to claim 1, characterized in that: The cross-sectional shape of the connecting hole is Y-shaped, including a second limiting groove and a second internal thread hole. The second limiting groove is provided on the end face of the positioning post, and the second internal thread hole is provided behind the second limiting groove.
6. The novel steel shank for clamping a cutting tool according to claim 5, characterized in that: The counterbore of the tool pressing member is in a "V" shape, and its inclination angle is the same as that of the second limiting groove.
7. A novel steel handle for clamping a cutting tool according to claim 1, characterized in that: The cross-sectional shape of the tool mounting portion is T-shaped. The head of the tool mounting portion includes a tool pressing surface. The positioning post and the third clearance groove are provided on the tool pressing surface. The main body of the tool mounting portion is provided behind the third positioning post, and an external thread is provided on its outer surface.
8. A novel steel shank for clamping a cutting tool according to claim 7, characterized in that: A groove is provided between the positioning post and the main body.
9. A novel steel handle for clamping a cutting tool according to claim 7, characterized in that: Internal threads are provided in the through hole of the tool pressing member.
10. A novel steel handle for clamping a tool according to claim 1, characterized in that: A key groove is provided on the side surface of the positioning post, and an external thread is provided at the front end of the positioning post.