Turning tool assembly for lathe and lathe

Abstract

The utility model provides a lathe and turning tool subassembly for lathe, relates to machining technical field, including lathe cutting board, tool apron and first fastener, lathe cutting board is equipped with connecting groove, the tool apron is equipped with connecting block that matches connecting groove, connecting block is used for inserting into connecting groove, first fastener includes fastening bolt and nut, and the nut is equipped with the connecting block that is used for inserting into the connecting groove. The lathe cutting board is provided with an operation hole and a connecting hole, one end of the connecting hole penetrates through the groove bottom of the connecting groove, the other end of the connecting hole is communicated with the operation hole, one end of the fastening bolt is inserted into the connecting block, and the other end of the fastening bolt penetrates through the connecting hole to stretch into the operation hole and is locked through a nut. The tool apron and the lathe cutting board are detachably connected, when the tool apron is damaged, the tool apron can be independently detached from the lathe cutting board for maintenance, the lathe cutting board does not need to be replaced, the maintenance cost is reduced, the maintenance time is shortened, and therefore the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to a lathe tool assembly and a lathe for a lathe. Background Technology

[0002] Heavy-duty CNC horizontal lathes are used for rough machining of parts. The cutting tool includes the insert, tool holder, and tool plate. The insert is usually mounted on the tool holder, which is usually welded and fixed to the tool plate on the lathe body. When the tool holder is damaged, it cannot be removed from the tool plate for repair, and the tool plate needs to be replaced as well. However, the procurement cost of the tool plate is high and the procurement cycle is long, resulting in low production efficiency and high production cost. Utility Model Content

[0003] This utility model aims to solve the technical problem in related technologies where the tool holder and lathe tool plate need to be replaced as a whole, which is costly.

[0004] On one hand, this utility model provides a lathe tool assembly, including a lathe tool plate, a tool holder, and a first fastener. The lathe tool plate is provided with a connecting groove, and the tool holder is provided with a connecting block that matches the connecting groove. The connecting block is used to insert into the connecting groove. The first fastener includes a fastening bolt and a nut. The lathe tool plate is provided with an operating hole and a connecting hole. One end of the connecting hole passes through the bottom of the connecting groove, and the other end of the connecting hole communicates with the operating hole. One end of the fastening bolt is inserted into the connecting block, and the other end passes through the connecting hole to extend into the operating hole and is locked by the nut.

[0005] Optionally, the connecting block is provided with a stepped groove with its opening facing the connecting groove. The stepped groove extends along its width direction to penetrate two opposite sides of the connecting block. The cross-sectional dimension of the bottom of the stepped groove is larger than the cross-sectional dimension of the opening of the stepped groove. The stepped groove has a first limiting step surface. The head of the fastening bolt is placed between the bottom wall of the stepped groove and the first limiting step surface. The shank of the fastening bolt protrudes from the opening of the stepped groove.

[0006] Optionally, the lathe tool plate forms a first abutment portion around the connecting groove, and the tool holder forms a second abutment portion around the connecting block, wherein the first abutment portion is used to contact the second abutment portion.

[0007] Optionally, the lathe tool assembly further includes a second fastener that passes through the first abutment portion and the second abutment portion.

[0008] Optionally, the lathe tool assembly for the lathe further includes a positioning key, wherein the first abutment portion has a first keyway on the side facing the second abutment portion, and the second abutment portion has a second keyway on the side facing the first abutment portion, and the positioning key is located between the first keyway and the second keyway.

[0009] Optionally, the first abutting portion is provided with a second limiting step surface that protrudes toward the side close to the second abutting portion, and the second abutting portion is provided with a third limiting step surface that cooperates with the second limiting step surface.

[0010] Optionally, at least one sidewall of the connecting groove is provided with a first guide positioning element arranged along the groove depth direction of the connecting groove, and the connecting block is provided with a second guide positioning element that matches the first guide positioning element.

[0011] Optionally, the first guide positioning element is one of the guide positioning groove and the guide positioning block, and the second guide positioning element is the other of the guide positioning groove and the guide positioning block.

[0012] Optionally, at least one sidewall of the connecting groove is an inclined wall, and the circumferential sidewall of the connecting block is provided with a mating wall that matches the inclined wall.

[0013] On the other hand, this utility model proposes a lathe including the above-mentioned lathe tool assembly.

[0014] The lathe tool assembly and lathe of this invention have at least the following advantages compared to related technologies:

[0015] By setting a connecting groove on the lathe tool plate and a connecting block matching the connecting groove on the tool holder, the tool holder and the lathe tool plate are positioned and assembled by inserting the connecting block into the connecting groove. One end of the fastening bolt of the first fastener is inserted into the connecting block, and the other end passes through the bottom of the connecting groove, the connecting hole, and into the operating hole. The operator inserts a nut tightening tool into the operating hole to lock the nut onto the fastening bolt, thus achieving a detachable connection between the tool holder and the lathe tool plate. When it is necessary to replace or repair the tool holder, the operator can insert the nut tightening tool into the operating hole... By accessing the operating hole, the nut is removed from the fastening bolt. Then, the tool holder is pulled away from the lathe tool plate, disengaging the connecting block from the connecting groove. This allows the tool holder to be detached from the lathe tool plate. Compared to existing methods that weld the tool holder to the lathe tool plate, this invention uses a detachable connection. If the tool holder is damaged, it can be removed separately from the lathe tool plate for repair without replacing the entire tool plate, reducing maintenance costs and time, thereby improving production efficiency and lowering production costs. Furthermore, by appropriately setting the length of the connecting block, the depth of the connecting groove, and the insertion depth of the first fastener's fastening bolt into the connecting block and lathe tool plate, the connection stability between the tool holder and the lathe tool plate can be ensured. This prevents tool holder breakage and damage, as well as deformation of the mating parts between the tool holder and the lathe tool plate, even under large cutting forces. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a lathe tool assembly for a lathe according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the tool holder structure according to an embodiment of the present utility model;

[0018] Figure 3 This is an exploded structural diagram of a lathe tool assembly for a lathe according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Lathe tool plate; 11. Connecting groove; 111. First guide positioning component; 112. Inclined wall; 12. Connecting hole; 13. Operating hole; 14. First abutment part; 141. First keyway; 142. Second limiting step surface; 2. Tool holder; 21. Connecting block; 211. Second guide positioning component; 212. Mating wall; 22. Stepped groove; 221. First limiting step surface; 23. Second abutment part; 231. Second keyway; 232. Third limiting step surface; 3. First fastener; 31. Fastening bolt; 32. Nut. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fitting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In addition, it should be noted that in the description of this utility model, the terms and nouns in each embodiment, such as "upper," "lower," "front," and "rear," which indicate the location, are only used to simplify the description of the positional relationship based on the accompanying drawings. They do not mean that the components and devices referred to must be operated in accordance with the specific location and limited operation, method, and structure in the specification. Such directional terms do not constitute a limitation on this utility model.

[0024] This paper establishes an XYZ coordinate system. The Z-axis represents the vertical direction, with the positive Z-axis pointing upwards and the negative Z-axis pointing downwards. It should be noted that the aforementioned Z-axis representation is merely for ease of description and simplification of this invention, and does not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, it should not be construed as a limitation of this invention.

[0025] like Figure 1 and Figure 3 As shown in the figure, a lathe tool assembly for a lathe according to an embodiment of the present invention includes a lathe tool plate 1, a tool holder 2, and a first fastener 3. The lathe tool plate 1 is provided with a connecting groove 11, and the tool holder 2 is provided with a connecting block 21 that matches the connecting groove 11. The connecting block 21 is used to insert into the connecting groove 11. The first fastener 3 includes a fastening bolt 31 and a nut 32. The lathe tool plate 1 is provided with an operating hole 13 and a connecting hole 12. One end of the connecting hole 12 passes through the bottom of the connecting groove 11, and the other end of the connecting hole 12 communicates with the operating hole 13. One end of the fastening bolt 31 is inserted into the connecting block 21, and the other end passes through the connecting hole 12 to extend into the operating hole 13 and is locked by the nut 32.

[0026] Specifically, the lathe tool plate 1 is arranged along the XZ plane. One end of the lathe tool plate 1 along the X direction has a connecting groove 11, which penetrates the lathe tool plate 1 along the Y direction. The connecting groove 11 can be a U-shaped groove, V-shaped groove, etc. One end of the tool holder 2 along the X direction has a connecting block 21, which can be inserted into the connecting groove 11 along the X direction. The operating hole 13 can be located on the side of the connecting groove 11 away from the groove opening. The operating hole 13 penetrates the thickness direction of the lathe tool plate 1, i.e., the Y direction. The operating hole 13 can be a rectangular hole, and its size is larger than that of the nut 32 so that the nut 32 can be placed inside the operating hole 13. One end of the fastening bolt 31 can be pre-embedded and fixed on the tool holder 2. When the connecting block 21 is inserted into the connecting groove 11, the other end of the fastening bolt 31 passes through the bottom of the connecting groove 11, the connecting hole 12, and extends into the operating hole 13. The fastening bolt 31 can be a high-strength bolt to improve the connection strength between the tool holder 2 and the lathe tool plate 1.

[0027] In this embodiment, a connecting groove 11 is provided on the lathe tool plate 1, and a connecting block 21 matching the connecting groove 11 is provided on the tool holder 2. The connecting block 21 is inserted into the connecting groove 11 to achieve positioning and assembly of the tool holder 2 and the lathe tool plate 1. One end of the fastening bolt 31 of the first fastener 3 is inserted into the connecting block 21, and the other end passes through the bottom of the connecting groove 11, the connecting hole 12, and is inserted into the operating hole 13. The operator inserts a nut tightening tool into the operating hole 13 to lock the nut 32 onto the fastening bolt 31, thereby achieving a detachable connection between the tool holder 2 and the lathe tool plate 1. When it is necessary to replace or repair the tool holder 2, the operator... A nut tightening tool can be inserted into the operating hole 13 to remove the nut 32 from the fastening bolt 31. Then, the tool holder 2 can be pulled away from the lathe tool plate 1, causing the connecting block 21 to disengage from the connecting groove 11. This achieves the removal of the tool holder 2 from the lathe tool plate 1. Compared to existing solutions that weld the tool holder 2 to the lathe tool plate 1, this invention uses a detachable connection between the tool holder 2 and the lathe tool plate 1. When the tool holder 2 is damaged, it can be removed from the lathe tool plate 1 for repair without replacing the lathe tool plate 1, reducing maintenance costs and time, thereby improving production efficiency and lowering production costs. Furthermore, by reasonably setting the length of the connecting block 21, the depth of the connecting groove 11, and the insertion depth of the fastening bolt 31 of the first fastener 3 into the connecting block 21 and the lathe tool plate 1, the connection stability between the tool holder 2 and the lathe tool plate 1 can be ensured. This prevents the tool holder 2 from breaking or being damaged under large cutting forces, and also prevents deformation of the mating parts between the tool holder 2 and the lathe tool plate 1.

[0028] like Figures 1-2As shown, optionally, the connecting block 21 is provided with a stepped groove 22 with its opening facing the connecting groove 11. The stepped groove 22 extends along its width direction to penetrate two opposite sides of the connecting block 21. The cross-sectional dimension of the bottom of the stepped groove 22 is larger than the cross-sectional dimension of the opening of the stepped groove 22. The stepped groove 22 has a first limiting step surface 221. The head of the fastening bolt 31 is placed between the bottom wall of the stepped groove 22 and the first limiting step surface 221. The shank of the fastening bolt 31 protrudes from the opening of the stepped groove 22.

[0029] Specifically, the lathe tool plate 1 has a connecting groove 11 at one end along the positive X-axis, and the tool holder 2 has a connecting block 21 at one end along the negative X-axis. The connecting block 21 has a stepped groove 22 with its opening facing the connecting groove 11, that is, the opening of the stepped groove 22 is set facing the negative X-axis. The stepped groove 22 extends along its width to penetrate the two opposite sides of the connecting block 21, that is, the stepped groove 22 penetrates the two opposite sides of the connecting block 21 along the Y-axis. One end of the fastening bolt 31 can move from one side of the connecting block 21 along the Y-axis to slide into the stepped groove 22. The cross-sectional dimension of the bottom of the stepped groove 22 is larger than the cross-sectional dimension of the opening of the stepped groove 22. The stepped groove 22 can be a two-stage stepped groove. The side wall of the stepped groove 22 forms a first limiting step surface 221. After the fastening bolt 31 slides into the stepped groove 22, its head can abut against the first limiting step surface 221 and the bottom wall of the stepped groove 22 to prevent the fastening bolt 31 from disengaging from the stepped groove 22 in the X direction. The shank of the fastening bolt 31 extends out from the opening of the stepped groove 22 and passes through the connecting groove 11 and the connecting hole 12 in sequence to be inserted into the operating hole 13.

[0030] like Figures 2-3 As shown, optionally, the lathe tool plate 1 forms a first abutment portion 14 around the connecting groove 11, and the tool holder 2 forms a second abutment portion 23 around the connecting block 21, wherein the first abutment portion 14 is used to contact the second abutment portion 23.

[0031] Specifically, the portion of the lathe tool plate 1 surrounding the connecting groove 11, such as the portion below the connecting groove 11, forms a first abutment portion 14. Similarly, the portion of the tool holder 2 surrounding the connecting block 21, such as the portion below the connecting block 21, forms a second abutment portion 23. When the connecting block 21 is inserted into the connecting groove 11 and the first abutment portion 14 and the second abutment portion 23 come into contact, it indicates that the connecting block 21 and the connecting groove 11 are properly assembled. Furthermore, the contact between the first abutment portion 14 and the second abutment portion 23 increases the contact area between the tool holder 2 and the lathe tool plate 1, improving the assembly stability between them. The first abutment portion 14 and the second abutment portion 23 can be extended downwards as needed to increase stress stability and ensure strength requirements under heavy cutting.

[0032] Optionally, the lathe tool assembly further includes a second fastener that passes through the first abutment portion 14 and the second abutment portion 23. The second fastener may be a bolt, and multiple second fasteners may be provided. The second fasteners may be arranged along the X direction. By using the second fasteners passing through the first abutment portion 14 and the second abutment portion 23, the installation stability of the tool holder 2 on the lathe tool plate 1 can be further improved.

[0033] like Figures 2-3 As shown, optionally, the lathe tool assembly also includes a positioning key. The first abutment portion 14 has a first keyway 141 on the side facing the second abutment portion 23, and the second abutment portion 23 has a second keyway 231 on the side facing the first abutment portion 14. The positioning key is located between the first keyway 141 and the second keyway 231. The first keyway 141 and the second keyway 231 can be elongated keyways. By setting a positioning key between the first keyway 141 and the second keyway 231, the contact area between the tool holder 2 and the lathe tool plate 1 is increased, making the connection between the two more stable. Moreover, after the second fastener fixes the tool holder 2 and the lathe tool plate 1, the tool holder 2 will not vibrate relative to the lathe tool plate 1 during operation, effectively extending the service life of the cutting tool.

[0034] like Figures 2-3 As shown, optionally, the first abutting part 14 is provided with a second limiting step surface 142 protruding towards the side near the second abutting part 23, and the second abutting part 23 is provided with a third limiting step surface 232 that cooperates with the second limiting step surface 142. The second limiting step surface 142 and the third limiting step surface 232 are L-shaped step surfaces, and the third limiting step surface 232 is formed by the recess of the tool holder 2. By providing matching second limiting step surfaces 142 and third limiting step surfaces 232 on the sides of the first abutting part 14 and the second abutting part 23 facing each other, the positioning and assembly of the first abutting part 14 and the second abutting part 23 can be achieved, thereby improving the assembly accuracy of the tool holder 2 and the lathe tool plate 1.

[0035] like Figures 2-3As shown, optionally, at least one sidewall of the connecting groove 11 is provided with a first guide positioning member 111 arranged along the groove depth direction of the connecting groove 11, and the connecting block 21 is provided with a second guide positioning member 211 that matches the first guide positioning member 111. The first guide positioning member 111 and the second guide positioning member 211 extend approximately along the X direction. The first guide positioning member 111 can be provided on the upper and lower sidewalls of the connecting groove 11, and the second guide positioning member 211 can be provided on the upper and lower surfaces of the connecting block 21. On the one hand, the connecting block 21 can be positioned and engaged with the first guide positioning member 111 on the connecting groove 11 by the second guide positioning member 211, so as to ensure the positioning and assembly of the connecting block 21 and the connecting groove 11. On the other hand, the connecting block 21 can be smoothly inserted into the connecting groove 11 under the guidance of the second guide positioning member 211 and the first guide positioning member 111, thereby improving the assembly efficiency of the tool holder 2 and the lathe tool plate 1. Corresponding guide positioning structures can also be provided on the second limiting step surface 142 and the third limiting step surface 232.

[0036] Optionally, the first guide positioning member 111 is one of a guide positioning groove and a guide positioning block, and the second guide positioning member 211 is the other of a guide positioning groove and a guide positioning block. A guide positioning block can be provided on the sidewall of the connecting groove 11, and a guide positioning groove can be provided on the surface of the connecting block 21. The guide positioning block can be formed by a protrusion on the sidewall of the connecting groove 11, and the guide positioning groove can be formed by a recess on the surface of the connecting block 21. The arrangement of the first guide positioning member 111 and the second guide positioning member 211 is simple. Alternatively, a guide positioning groove can be provided on the sidewall of the connecting groove 11, and a guide positioning block can be provided on the surface of the connecting block 21.

[0037] like Figures 2-3 As shown, optionally, at least one sidewall of the connecting groove 11 is an inclined wall 112, and the circumferential sidewall of the connecting block 21 is provided with a mating wall 212 that matches the inclined wall 112. The fact that at least one sidewall of the connecting groove 11 is an inclined wall 112 makes the connecting groove 11 a tapered structure with a gradually decreasing cross-sectional dimension from the groove opening to the bottom. The upward-facing sidewall of the connecting groove 11 can be an inclined wall 112, allowing the connecting block 21 to be smoothly inserted into the connecting groove 11 using the guiding effect of the mating wall 212 and the inclined wall 112, thus improving the assembly efficiency of the tool holder 2.

[0038] Another embodiment of this utility model provides a lathe including the aforementioned lathe tool assembly. The advantages of this lathe compared to the prior art are the same as those of the aforementioned lathe tool assembly, and will not be repeated here.

[0039] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A lathe tool assembly, characterized in that, The device includes a lathe tool plate (1), a tool holder (2), and a first fastener (3). The lathe tool plate (1) is provided with a connecting groove (11), and the tool holder (2) is provided with a connecting block (21) that matches the connecting groove (11). The connecting block (21) is used to insert into the connecting groove (11). The first fastener (3) includes a fastening bolt (31) and a nut (32). The lathe tool plate (1) is provided with an operating hole (13) and a connecting hole (12). One end of the connecting hole (12) passes through the bottom of the connecting groove (11), and the other end of the connecting hole (12) communicates with the operating hole (13). One end of the fastening bolt (31) is inserted into the connecting block (21), and the other end passes through the connecting hole (12) to extend into the operating hole (13) and is locked by the nut (32).

2. The lathe tool assembly for a lathe according to claim 1, characterized in that, The connecting block (21) is provided with a stepped groove (22) with the opening facing the connecting groove (11). The stepped groove (22) extends along its width direction to penetrate the two opposite sides of the connecting block (21). The cross-sectional dimension of the bottom of the stepped groove (22) is larger than the cross-sectional dimension of the opening of the stepped groove (22). The stepped groove (22) has a first limiting step surface (221). The head of the fastening bolt (31) is placed between the bottom wall of the stepped groove (22) and the first limiting step surface (221). The shank of the fastening bolt (31) protrudes from the opening of the stepped groove (22).

3. The lathe tool assembly for a lathe according to claim 1, characterized in that, The lathe tool plate (1) forms a first abutment portion (14) around the connecting groove (11), and the tool holder (2) forms a second abutment portion (23) around the connecting block (21). The first abutment portion (14) is used to contact the second abutment portion (23).

4. The lathe tool assembly according to claim 3, characterized in that, It also includes a second fastener that passes through the first abutment (14) and the second abutment (23).

5. The lathe tool assembly according to claim 4, characterized in that, It also includes a positioning key. The first abutment (14) has a first keyway (141) on the side facing the second abutment (23), and the second abutment (23) has a second keyway (231) on the side facing the first abutment (14). The positioning key is located between the first keyway (141) and the second keyway (231).

6. The lathe tool assembly according to claim 3, characterized in that, The first abutting part (14) is provided with a second limiting step surface (142) protruding towards the side close to the second abutting part (23), and the second abutting part (23) is provided with a third limiting step surface (232) that cooperates with the second limiting step surface (142).

7. The lathe tool assembly for a lathe according to claim 1, characterized in that, At least one sidewall of the connecting groove (11) is provided with a first guide positioning member (111) arranged along the groove depth direction of the connecting groove (11), and the connecting block (21) is provided with a second guide positioning member (211) that matches the first guide positioning member (111).

8. The lathe tool assembly according to claim 7, characterized in that, The first guide positioning element (111) is one of the guide positioning groove and the guide positioning block, and the second guide positioning element (211) is the other of the guide positioning groove and the guide positioning block.

9. The lathe tool assembly according to claim 1, characterized in that, At least one sidewall of the connecting groove (11) is an inclined wall (112), and the circumferential sidewall of the connecting block (21) is provided with a mating wall (212) that matches the inclined wall (112).

10. A lathe, characterized in that, Includes the lathe tool assembly for a lathe as described in any one of claims 1-9.

Images